model_brush.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "image.h"
  23 #include "r_shadow.h"
  24 #include "polygon.h"
  25 #include "curves.h"
  26 #include "wad.h"
  27
  28
  29 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
  30 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  31 cvar_t r_picmipworld = {CVAR_SAVE, "r_picmipworld", "1", "whether gl_picmip shall apply to world textures too"};
  32 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
  33 cvar_t r_subdivisions_tolerance = {0, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
  34 cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
  35 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  36 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  37 cvar_t r_subdivisions_collision_tolerance = {0, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
  38 cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "0", "minimum number of subdivisions (values above 0 will smooth curves that don't need it)"};
  39 cvar_t r_subdivisions_collision_maxtess = {0, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  40 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  41 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  42 cvar_t mod_q3bsp_curves_collisions_stride = {0, "mod_q3bsp_curves_collisions_stride", "16", "collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
  43 cvar_t mod_q3bsp_curves_stride = {0, "mod_q3bsp_curves_stride", "16", "particle effect collisions against curves: optimize performance by doing a combined collision check for this triangle amount first (-1 avoids any box tests)"};
  44 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  45 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  46 cvar_t mod_q3bsp_lightmapmergepower = {CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
  47 cvar_t mod_q3bsp_nolightmaps = {CVAR_SAVE, "mod_q3bsp_nolightmaps", "0", "do not load lightmaps in Q3BSP maps (to save video RAM, but be warned: it looks ugly)"};
  48 cvar_t mod_q3bsp_tracelineofsight_brushes = {0, "mod_q3bsp_tracelineofsight_brushes", "0", "enables culling of entities behind detail brushes, curves, etc"};
  49 cvar_t mod_q3shader_default_offsetmapping = {CVAR_SAVE, "mod_q3shader_default_offsetmapping", "1", "use offsetmapping by default on all surfaces"};
  50
  51 cvar_t mod_q1bsp_polygoncollisions = {0, "mod_q1bsp_polygoncollisions", "0", "disables use of precomputed cliphulls and instead collides with polygons (uses Bounding Interval Hierarchy optimizations)"};
  52 cvar_t mod_collision_bih = {0, "mod_collision_bih", "1", "enables use of generated Bounding Interval Hierarchy tree instead of compiled bsp tree in collision code"};
  53 cvar_t mod_recalculatenodeboxes = {0, "mod_recalculatenodeboxes", "1", "enables use of generated node bounding boxes based on BSP tree portal reconstruction, rather than the node boxes supplied by the map compiler"};
  54
  55 static texture_t mod_q1bsp_texture_solid;
  56 static texture_t mod_q1bsp_texture_sky;
  57 static texture_t mod_q1bsp_texture_lava;
  58 static texture_t mod_q1bsp_texture_slime;
  59 static texture_t mod_q1bsp_texture_water;
  60
  61 void Mod_BrushInit(void)
  62 {
  63 //      Cvar_RegisterVariable(&r_subdivide_size);
  64         Cvar_RegisterVariable(&r_novis);
  65         Cvar_RegisterVariable(&r_picmipworld);
  66         Cvar_RegisterVariable(&r_nosurftextures);
  67         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  68         Cvar_RegisterVariable(&r_subdivisions_mintess);
  69         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  70         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  71         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  72         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  73         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  74         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  75         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  76         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions_stride);
  77         Cvar_RegisterVariable(&mod_q3bsp_curves_stride);
  78         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  79         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  80         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  81         Cvar_RegisterVariable(&mod_q3bsp_nolightmaps);
  82         Cvar_RegisterVariable(&mod_q3bsp_tracelineofsight_brushes);
  83         Cvar_RegisterVariable(&mod_q3shader_default_offsetmapping);
  84         Cvar_RegisterVariable(&mod_q1bsp_polygoncollisions);
  85         Cvar_RegisterVariable(&mod_collision_bih);
  86         Cvar_RegisterVariable(&mod_recalculatenodeboxes);
  87
  88         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  89         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  90         mod_q1bsp_texture_solid.surfaceflags = 0;
  91         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  92
  93         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  94         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  95         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  96         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  97
  98         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  99         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
 100         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 101         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 102
 103         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
 104         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
 105         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 106         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
 107
 108         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
 109         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
 110         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 111         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 112 }
 113
 114 static mleaf_t *Mod_Q1BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
 115 {
 116         mnode_t *node;
 117
 118         if (model == NULL)
 119                 return NULL;
 120
 121         // LordHavoc: modified to start at first clip node,
 122         // in other words: first node of the (sub)model
 123         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 124         while (node->plane)
 125                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 126
 127         return (mleaf_t *)node;
 128 }
 129
 130 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(dp_model_t *model, const vec3_t p, unsigned char *out, int outsize)
 131 {
 132         int i;
 133         mleaf_t *leaf;
 134         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 135         if (leaf)
 136         {
 137                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 138                 if (i)
 139                 {
 140                         memcpy(out, leaf->ambient_sound_level, i);
 141                         out += i;
 142                         outsize -= i;
 143                 }
 144         }
 145         if (outsize)
 146                 memset(out, 0, outsize);
 147 }
 148
 149 static int Mod_Q1BSP_FindBoxClusters(dp_model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 150 {
 151         int numclusters = 0;
 152         int nodestackindex = 0;
 153         mnode_t *node, *nodestack[1024];
 154         if (!model->brush.num_pvsclusters)
 155                 return -1;
 156         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 157         for (;;)
 158         {
 159 #if 1
 160                 if (node->plane)
 161                 {
 162                         // node - recurse down the BSP tree
 163                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 164                         if (sides < 3)
 165                         {
 166                                 if (sides == 0)
 167                                         return -1; // ERROR: NAN bounding box!
 168                                 // box is on one side of plane, take that path
 169                                 node = node->children[sides-1];
 170                         }
 171                         else
 172                         {
 173                                 // box crosses plane, take one path and remember the other
 174                                 if (nodestackindex < 1024)
 175                                         nodestack[nodestackindex++] = node->children[0];
 176                                 node = node->children[1];
 177                         }
 178                         continue;
 179                 }
 180                 else
 181                 {
 182                         // leaf - add clusterindex to list
 183                         if (numclusters < maxclusters)
 184                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 185                         numclusters++;
 186                 }
 187 #else
 188                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 189                 {
 190                         if (node->plane)
 191                         {
 192                                 if (nodestackindex < 1024)
 193                                         nodestack[nodestackindex++] = node->children[0];
 194                                 node = node->children[1];
 195                                 continue;
 196                         }
 197                         else
 198                         {
 199                                 // leaf - add clusterindex to list
 200                                 if (numclusters < maxclusters)
 201                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 202                                 numclusters++;
 203                         }
 204                 }
 205 #endif
 206                 // try another path we didn't take earlier
 207                 if (nodestackindex == 0)
 208                         break;
 209                 node = nodestack[--nodestackindex];
 210         }
 211         // return number of clusters found (even if more than the maxclusters)
 212         return numclusters;
 213 }
 214
 215 static int Mod_Q1BSP_BoxTouchingPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 216 {
 217         int nodestackindex = 0;
 218         mnode_t *node, *nodestack[1024];
 219         if (!model->brush.num_pvsclusters)
 220                 return true;
 221         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 222         for (;;)
 223         {
 224 #if 1
 225                 if (node->plane)
 226                 {
 227                         // node - recurse down the BSP tree
 228                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 229                         if (sides < 3)
 230                         {
 231                                 if (sides == 0)
 232                                         return -1; // ERROR: NAN bounding box!
 233                                 // box is on one side of plane, take that path
 234                                 node = node->children[sides-1];
 235                         }
 236                         else
 237                         {
 238                                 // box crosses plane, take one path and remember the other
 239                                 if (nodestackindex < 1024)
 240                                         nodestack[nodestackindex++] = node->children[0];
 241                                 node = node->children[1];
 242                         }
 243                         continue;
 244                 }
 245                 else
 246                 {
 247                         // leaf - check cluster bit
 248                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 249                         if (CHECKPVSBIT(pvs, clusterindex))
 250                         {
 251                                 // it is visible, return immediately with the news
 252                                 return true;
 253                         }
 254                 }
 255 #else
 256                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 257                 {
 258                         if (node->plane)
 259                         {
 260                                 if (nodestackindex < 1024)
 261                                         nodestack[nodestackindex++] = node->children[0];
 262                                 node = node->children[1];
 263                                 continue;
 264                         }
 265                         else
 266                         {
 267                                 // leaf - check cluster bit
 268                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 269                                 if (CHECKPVSBIT(pvs, clusterindex))
 270                                 {
 271                                         // it is visible, return immediately with the news
 272                                         return true;
 273                                 }
 274                         }
 275                 }
 276 #endif
 277                 // nothing to see here, try another path we didn't take earlier
 278                 if (nodestackindex == 0)
 279                         break;
 280                 node = nodestack[--nodestackindex];
 281         }
 282         // it is not visible
 283         return false;
 284 }
 285
 286 static int Mod_Q1BSP_BoxTouchingLeafPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 287 {
 288         int nodestackindex = 0;
 289         mnode_t *node, *nodestack[1024];
 290         if (!model->brush.num_leafs)
 291                 return true;
 292         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 293         for (;;)
 294         {
 295 #if 1
 296                 if (node->plane)
 297                 {
 298                         // node - recurse down the BSP tree
 299                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 300                         if (sides < 3)
 301                         {
 302                                 if (sides == 0)
 303                                         return -1; // ERROR: NAN bounding box!
 304                                 // box is on one side of plane, take that path
 305                                 node = node->children[sides-1];
 306                         }
 307                         else
 308                         {
 309                                 // box crosses plane, take one path and remember the other
 310                                 if (nodestackindex < 1024)
 311                                         nodestack[nodestackindex++] = node->children[0];
 312                                 node = node->children[1];
 313                         }
 314                         continue;
 315                 }
 316                 else
 317                 {
 318                         // leaf - check cluster bit
 319                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 320                         if (CHECKPVSBIT(pvs, clusterindex))
 321                         {
 322                                 // it is visible, return immediately with the news
 323                                 return true;
 324                         }
 325                 }
 326 #else
 327                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 328                 {
 329                         if (node->plane)
 330                         {
 331                                 if (nodestackindex < 1024)
 332                                         nodestack[nodestackindex++] = node->children[0];
 333                                 node = node->children[1];
 334                                 continue;
 335                         }
 336                         else
 337                         {
 338                                 // leaf - check cluster bit
 339                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 340                                 if (CHECKPVSBIT(pvs, clusterindex))
 341                                 {
 342                                         // it is visible, return immediately with the news
 343                                         return true;
 344                                 }
 345                         }
 346                 }
 347 #endif
 348                 // nothing to see here, try another path we didn't take earlier
 349                 if (nodestackindex == 0)
 350                         break;
 351                 node = nodestack[--nodestackindex];
 352         }
 353         // it is not visible
 354         return false;
 355 }
 356
 357 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(dp_model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 358 {
 359         int nodestackindex = 0;
 360         mnode_t *node, *nodestack[1024];
 361         if (!model->brush.num_leafs)
 362                 return true;
 363         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 364         for (;;)
 365         {
 366 #if 1
 367                 if (node->plane)
 368                 {
 369                         // node - recurse down the BSP tree
 370                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 371                         if (sides < 3)
 372                         {
 373                                 if (sides == 0)
 374                                         return -1; // ERROR: NAN bounding box!
 375                                 // box is on one side of plane, take that path
 376                                 node = node->children[sides-1];
 377                         }
 378                         else
 379                         {
 380                                 // box crosses plane, take one path and remember the other
 381                                 if (nodestackindex < 1024)
 382                                         nodestack[nodestackindex++] = node->children[0];
 383                                 node = node->children[1];
 384                         }
 385                         continue;
 386                 }
 387                 else
 388                 {
 389                         // leaf - check if it is visible
 390                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 391                         {
 392                                 // it is visible, return immediately with the news
 393                                 return true;
 394                         }
 395                 }
 396 #else
 397                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 398                 {
 399                         if (node->plane)
 400                         {
 401                                 if (nodestackindex < 1024)
 402                                         nodestack[nodestackindex++] = node->children[0];
 403                                 node = node->children[1];
 404                                 continue;
 405                         }
 406                         else
 407                         {
 408                                 // leaf - check if it is visible
 409                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 410                                 {
 411                                         // it is visible, return immediately with the news
 412                                         return true;
 413                                 }
 414                         }
 415                 }
 416 #endif
 417                 // nothing to see here, try another path we didn't take earlier
 418                 if (nodestackindex == 0)
 419                         break;
 420                 node = nodestack[--nodestackindex];
 421         }
 422         // it is not visible
 423         return false;
 424 }
 425
 426 typedef struct findnonsolidlocationinfo_s
 427 {
 428         vec3_t center;
 429         vec3_t absmin, absmax;
 430         vec_t radius;
 431         vec3_t nudge;
 432         vec_t bestdist;
 433         dp_model_t *model;
 434 }
 435 findnonsolidlocationinfo_t;
 436
 437 static void Mod_Q1BSP_FindNonSolidLocation_r_Triangle(findnonsolidlocationinfo_t *info, msurface_t *surface, int k)
 438 {
 439         int i, *tri;
 440         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 441
 442         tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 443         VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 444         VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 445         VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 446         VectorSubtract(vert[1], vert[0], edge[0]);
 447         VectorSubtract(vert[2], vert[1], edge[1]);
 448         CrossProduct(edge[1], edge[0], facenormal);
 449         if (facenormal[0] || facenormal[1] || facenormal[2])
 450         {
 451                 VectorNormalize(facenormal);
 452                 f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 453                 if (f <= info->bestdist && f >= -info->bestdist)
 454                 {
 455                         VectorSubtract(vert[0], vert[2], edge[2]);
 456                         VectorNormalize(edge[0]);
 457                         VectorNormalize(edge[1]);
 458                         VectorNormalize(edge[2]);
 459                         CrossProduct(facenormal, edge[0], edgenormal[0]);
 460                         CrossProduct(facenormal, edge[1], edgenormal[1]);
 461                         CrossProduct(facenormal, edge[2], edgenormal[2]);
 462                         // face distance
 463                         if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 464                                         && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 465                                         && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 466                         {
 467                                 // we got lucky, the center is within the face
 468                                 dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 469                                 if (dist < 0)
 470                                 {
 471                                         dist = -dist;
 472                                         if (info->bestdist > dist)
 473                                         {
 474                                                 info->bestdist = dist;
 475                                                 VectorScale(facenormal, (info->radius - -dist), info->nudge);
 476                                         }
 477                                 }
 478                                 else
 479                                 {
 480                                         if (info->bestdist > dist)
 481                                         {
 482                                                 info->bestdist = dist;
 483                                                 VectorScale(facenormal, (info->radius - dist), info->nudge);
 484                                         }
 485                                 }
 486                         }
 487                         else
 488                         {
 489                                 // check which edge or vertex the center is nearest
 490                                 for (i = 0;i < 3;i++)
 491                                 {
 492                                         f = DotProduct(info->center, edge[i]);
 493                                         if (f >= DotProduct(vert[0], edge[i])
 494                                                         && f <= DotProduct(vert[1], edge[i]))
 495                                         {
 496                                                 // on edge
 497                                                 VectorMA(info->center, -f, edge[i], point);
 498                                                 dist = sqrt(DotProduct(point, point));
 499                                                 if (info->bestdist > dist)
 500                                                 {
 501                                                         info->bestdist = dist;
 502                                                         VectorScale(point, (info->radius / dist), info->nudge);
 503                                                 }
 504                                                 // skip both vertex checks
 505                                                 // (both are further away than this edge)
 506                                                 i++;
 507                                         }
 508                                         else
 509                                         {
 510                                                 // not on edge, check first vertex of edge
 511                                                 VectorSubtract(info->center, vert[i], point);
 512                                                 dist = sqrt(DotProduct(point, point));
 513                                                 if (info->bestdist > dist)
 514                                                 {
 515                                                         info->bestdist = dist;
 516                                                         VectorScale(point, (info->radius / dist), info->nudge);
 517                                                 }
 518                                         }
 519                                 }
 520                         }
 521                 }
 522         }
 523 }
 524
 525 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 526 {
 527         int surfacenum, k, *mark;
 528         msurface_t *surface;
 529         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 530         {
 531                 surface = info->model->data_surfaces + *mark;
 532                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 533                 {
 534                         if(surface->deprecatedq3num_bboxstride > 0)
 535                         {
 536                                 int i, cnt, tri;
 537                                 cnt = (surface->num_triangles + surface->deprecatedq3num_bboxstride - 1) / surface->deprecatedq3num_bboxstride;
 538                                 for(i = 0; i < cnt; ++i)
 539                                 {
 540                                         if(BoxesOverlap(surface->deprecatedq3data_bbox6f + i * 6, surface->deprecatedq3data_bbox6f + i * 6 + 3, info->absmin, info->absmax))
 541                                         {
 542                                                 for(k = 0; k < surface->deprecatedq3num_bboxstride; ++k)
 543                                                 {
 544                                                         tri = i * surface->deprecatedq3num_bboxstride + k;
 545                                                         if(tri >= surface->num_triangles)
 546                                                                 break;
 547                                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, tri);
 548                                                 }
 549                                         }
 550                                 }
 551                         }
 552                         else
 553                         {
 554                                 for (k = 0;k < surface->num_triangles;k++)
 555                                 {
 556                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
 557                                 }
 558                         }
 559                 }
 560         }
 561 }
 562
 563 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 564 {
 565         if (node->plane)
 566         {
 567                 float f = PlaneDiff(info->center, node->plane);
 568                 if (f >= -info->bestdist)
 569                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 570                 if (f <= info->bestdist)
 571                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 572         }
 573         else
 574         {
 575                 if (((mleaf_t *)node)->numleafsurfaces)
 576                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 577         }
 578 }
 579
 580 static void Mod_Q1BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, vec3_t out, float radius)
 581 {
 582         int i;
 583         findnonsolidlocationinfo_t info;
 584         if (model == NULL)
 585         {
 586                 VectorCopy(in, out);
 587                 return;
 588         }
 589         VectorCopy(in, info.center);
 590         info.radius = radius;
 591         info.model = model;
 592         i = 0;
 593         do
 594         {
 595                 VectorClear(info.nudge);
 596                 info.bestdist = radius;
 597                 VectorCopy(info.center, info.absmin);
 598                 VectorCopy(info.center, info.absmax);
 599                 info.absmin[0] -= info.radius + 1;
 600                 info.absmin[1] -= info.radius + 1;
 601                 info.absmin[2] -= info.radius + 1;
 602                 info.absmax[0] += info.radius + 1;
 603                 info.absmax[1] += info.radius + 1;
 604                 info.absmax[2] += info.radius + 1;
 605                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 606                 VectorAdd(info.center, info.nudge, info.center);
 607         }
 608         while (info.bestdist < radius && ++i < 10);
 609         VectorCopy(info.center, out);
 610 }
 611
 612 int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
 613 {
 614         switch(nativecontents)
 615         {
 616                 case CONTENTS_EMPTY:
 617                         return 0;
 618                 case CONTENTS_SOLID:
 619                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
 620                 case CONTENTS_WATER:
 621                         return SUPERCONTENTS_WATER;
 622                 case CONTENTS_SLIME:
 623                         return SUPERCONTENTS_SLIME;
 624                 case CONTENTS_LAVA:
 625                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 626                 case CONTENTS_SKY:
 627                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE; // to match behaviour of Q3 maps, let sky count as opaque
 628         }
 629         return 0;
 630 }
 631
 632 int Mod_Q1BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
 633 {
 634         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 635                 return CONTENTS_SOLID;
 636         if (supercontents & SUPERCONTENTS_SKY)
 637                 return CONTENTS_SKY;
 638         if (supercontents & SUPERCONTENTS_LAVA)
 639                 return CONTENTS_LAVA;
 640         if (supercontents & SUPERCONTENTS_SLIME)
 641                 return CONTENTS_SLIME;
 642         if (supercontents & SUPERCONTENTS_WATER)
 643                 return CONTENTS_WATER;
 644         return CONTENTS_EMPTY;
 645 }
 646
 647 typedef struct RecursiveHullCheckTraceInfo_s
 648 {
 649         // the hull we're tracing through
 650         const hull_t *hull;
 651
 652         // the trace structure to fill in
 653         trace_t *trace;
 654
 655         // start, end, and end - start (in model space)
 656         double start[3];
 657         double end[3];
 658         double dist[3];
 659 }
 660 RecursiveHullCheckTraceInfo_t;
 661
 662 // 1/32 epsilon to keep floating point happy
 663 #define DIST_EPSILON (0.03125)
 664
 665 #define HULLCHECKSTATE_EMPTY 0
 666 #define HULLCHECKSTATE_SOLID 1
 667 #define HULLCHECKSTATE_DONE 2
 668
 669 extern cvar_t collision_prefernudgedfraction;
 670 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 671 {
 672         // status variables, these don't need to be saved on the stack when
 673         // recursing...  but are because this should be thread-safe
 674         // (note: tracing against a bbox is not thread-safe, yet)
 675         int ret;
 676         mplane_t *plane;
 677         double t1, t2;
 678
 679         // variables that need to be stored on the stack when recursing
 680         mclipnode_t *node;
 681         int side;
 682         double midf, mid[3];
 683
 684         // LordHavoc: a goto!  everyone flee in terror... :)
 685 loc0:
 686         // check for empty
 687         if (num < 0)
 688         {
 689                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 690                 if (!t->trace->startfound)
 691                 {
 692                         t->trace->startfound = true;
 693                         t->trace->startsupercontents |= num;
 694                 }
 695                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 696                         t->trace->inwater = true;
 697                 if (num == 0)
 698                         t->trace->inopen = true;
 699                 if (num & SUPERCONTENTS_SOLID)
 700                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 701                 else if (num & SUPERCONTENTS_SKY)
 702                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 703                 else if (num & SUPERCONTENTS_LAVA)
 704                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 705                 else if (num & SUPERCONTENTS_SLIME)
 706                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 707                 else
 708                         t->trace->hittexture = &mod_q1bsp_texture_water;
 709                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 710                 t->trace->hitsupercontents = num;
 711                 if (num & t->trace->hitsupercontentsmask)
 712                 {
 713                         // if the first leaf is solid, set startsolid
 714                         if (t->trace->allsolid)
 715                                 t->trace->startsolid = true;
 716 #if COLLISIONPARANOID >= 3
 717                         Con_Print("S");
 718 #endif
 719                         return HULLCHECKSTATE_SOLID;
 720                 }
 721                 else
 722                 {
 723                         t->trace->allsolid = false;
 724 #if COLLISIONPARANOID >= 3
 725                         Con_Print("E");
 726 #endif
 727                         return HULLCHECKSTATE_EMPTY;
 728                 }
 729         }
 730
 731         // find the point distances
 732         node = t->hull->clipnodes + num;
 733
 734         plane = t->hull->planes + node->planenum;
 735         if (plane->type < 3)
 736         {
 737                 t1 = p1[plane->type] - plane->dist;
 738                 t2 = p2[plane->type] - plane->dist;
 739         }
 740         else
 741         {
 742                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 743                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 744         }
 745
 746         if (t1 < 0)
 747         {
 748                 if (t2 < 0)
 749                 {
 750 #if COLLISIONPARANOID >= 3
 751                         Con_Print("<");
 752 #endif
 753                         num = node->children[1];
 754                         goto loc0;
 755                 }
 756                 side = 1;
 757         }
 758         else
 759         {
 760                 if (t2 >= 0)
 761                 {
 762 #if COLLISIONPARANOID >= 3
 763                         Con_Print(">");
 764 #endif
 765                         num = node->children[0];
 766                         goto loc0;
 767                 }
 768                 side = 0;
 769         }
 770
 771         // the line intersects, find intersection point
 772         // LordHavoc: this uses the original trace for maximum accuracy
 773 #if COLLISIONPARANOID >= 3
 774         Con_Print("M");
 775 #endif
 776         if (plane->type < 3)
 777         {
 778                 t1 = t->start[plane->type] - plane->dist;
 779                 t2 = t->end[plane->type] - plane->dist;
 780         }
 781         else
 782         {
 783                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 784                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 785         }
 786
 787         midf = t1 / (t1 - t2);
 788         midf = bound(p1f, midf, p2f);
 789         VectorMA(t->start, midf, t->dist, mid);
 790
 791         // recurse both sides, front side first
 792         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 793         // if this side is not empty, return what it is (solid or done)
 794         if (ret != HULLCHECKSTATE_EMPTY)
 795                 return ret;
 796
 797         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 798         // if other side is not solid, return what it is (empty or done)
 799         if (ret != HULLCHECKSTATE_SOLID)
 800                 return ret;
 801
 802         // front is air and back is solid, this is the impact point...
 803         if (side)
 804         {
 805                 t->trace->plane.dist = -plane->dist;
 806                 VectorNegate (plane->normal, t->trace->plane.normal);
 807         }
 808         else
 809         {
 810                 t->trace->plane.dist = plane->dist;
 811                 VectorCopy (plane->normal, t->trace->plane.normal);
 812         }
 813
 814         // calculate the true fraction
 815         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 816         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 817         midf = t1 / (t1 - t2);
 818         t->trace->realfraction = bound(0, midf, 1);
 819
 820         // calculate the return fraction which is nudged off the surface a bit
 821         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 822         t->trace->fraction = bound(0, midf, 1);
 823
 824         if (collision_prefernudgedfraction.integer)
 825                 t->trace->realfraction = t->trace->fraction;
 826
 827 #if COLLISIONPARANOID >= 3
 828         Con_Print("D");
 829 #endif
 830         return HULLCHECKSTATE_DONE;
 831 }
 832
 833 //#if COLLISIONPARANOID < 2
 834 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 835 {
 836         mplane_t *plane;
 837         mclipnode_t *nodes = t->hull->clipnodes;
 838         mplane_t *planes = t->hull->planes;
 839         vec3_t point;
 840         VectorCopy(t->start, point);
 841         while (num >= 0)
 842         {
 843                 plane = planes + nodes[num].planenum;
 844                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 845         }
 846         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 847         t->trace->startsupercontents |= num;
 848         if (num & SUPERCONTENTS_LIQUIDSMASK)
 849                 t->trace->inwater = true;
 850         if (num == 0)
 851                 t->trace->inopen = true;
 852         if (num & t->trace->hitsupercontentsmask)
 853         {
 854                 t->trace->allsolid = t->trace->startsolid = true;
 855                 return HULLCHECKSTATE_SOLID;
 856         }
 857         else
 858         {
 859                 t->trace->allsolid = t->trace->startsolid = false;
 860                 return HULLCHECKSTATE_EMPTY;
 861         }
 862 }
 863 //#endif
 864
 865 static void Mod_Q1BSP_TracePoint(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
 866 {
 867         RecursiveHullCheckTraceInfo_t rhc;
 868
 869         memset(&rhc, 0, sizeof(rhc));
 870         memset(trace, 0, sizeof(trace_t));
 871         rhc.trace = trace;
 872         rhc.trace->fraction = 1;
 873         rhc.trace->realfraction = 1;
 874         rhc.trace->allsolid = true;
 875         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 876         VectorCopy(start, rhc.start);
 877         VectorCopy(start, rhc.end);
 878         Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 879 }
 880
 881 static void Mod_Q1BSP_TraceLine(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
 882 {
 883         RecursiveHullCheckTraceInfo_t rhc;
 884
 885         if (VectorCompare(start, end))
 886         {
 887                 Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 888                 return;
 889         }
 890
 891         memset(&rhc, 0, sizeof(rhc));
 892         memset(trace, 0, sizeof(trace_t));
 893         rhc.trace = trace;
 894         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 895         rhc.trace->fraction = 1;
 896         rhc.trace->realfraction = 1;
 897         rhc.trace->allsolid = true;
 898         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 899         VectorCopy(start, rhc.start);
 900         VectorCopy(end, rhc.end);
 901         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 902 #if COLLISIONPARANOID >= 2
 903         Con_Printf("t(%f %f %f,%f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2]);
 904         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 905         {
 906
 907                 double test[3];
 908                 trace_t testtrace;
 909                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 910                 memset(&testtrace, 0, sizeof(trace_t));
 911                 rhc.trace = &testtrace;
 912                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 913                 rhc.trace->fraction = 1;
 914                 rhc.trace->realfraction = 1;
 915                 rhc.trace->allsolid = true;
 916                 VectorCopy(test, rhc.start);
 917                 VectorCopy(test, rhc.end);
 918                 VectorClear(rhc.dist);
 919                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 920                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 921                 if (!trace->startsolid && testtrace.startsolid)
 922                         Con_Printf(" - ended in solid!\n");
 923         }
 924         Con_Print("\n");
 925 #else
 926         if (VectorLength2(rhc.dist))
 927                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 928         else
 929                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 930 #endif
 931 }
 932
 933 static void Mod_Q1BSP_TraceBox(struct model_s *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 934 {
 935         // this function currently only supports same size start and end
 936         double boxsize[3];
 937         RecursiveHullCheckTraceInfo_t rhc;
 938
 939         if (VectorCompare(boxmins, boxmaxs))
 940         {
 941                 if (VectorCompare(start, end))
 942                         Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 943                 else
 944                         Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
 945                 return;
 946         }
 947
 948         memset(&rhc, 0, sizeof(rhc));
 949         memset(trace, 0, sizeof(trace_t));
 950         rhc.trace = trace;
 951         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 952         rhc.trace->fraction = 1;
 953         rhc.trace->realfraction = 1;
 954         rhc.trace->allsolid = true;
 955         VectorSubtract(boxmaxs, boxmins, boxsize);
 956         if (boxsize[0] < 3)
 957                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 958         else if (model->brush.ishlbsp)
 959         {
 960                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 961                 // minor float precision errors from the box being transformed around
 962                 if (boxsize[0] < 32.1)
 963                 {
 964                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 965                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 966                         else
 967                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 968                 }
 969                 else
 970                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 971         }
 972         else
 973         {
 974                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 975                 // minor float precision errors from the box being transformed around
 976                 if (boxsize[0] < 32.1)
 977                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 978                 else
 979                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 980         }
 981         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 982         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 983         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 984 #if COLLISIONPARANOID >= 2
 985         Con_Printf("t(%f %f %f,%f %f %f,%i %f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2], rhc.hull - model->brushq1.hulls, rhc.hull->clip_mins[0], rhc.hull->clip_mins[1], rhc.hull->clip_mins[2]);
 986         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 987         {
 988
 989                 double test[3];
 990                 trace_t testtrace;
 991                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 992                 memset(&testtrace, 0, sizeof(trace_t));
 993                 rhc.trace = &testtrace;
 994                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 995                 rhc.trace->fraction = 1;
 996                 rhc.trace->realfraction = 1;
 997                 rhc.trace->allsolid = true;
 998                 VectorCopy(test, rhc.start);
 999                 VectorCopy(test, rhc.end);
1000                 VectorClear(rhc.dist);
1001                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1002                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
1003                 if (!trace->startsolid && testtrace.startsolid)
1004                         Con_Printf(" - ended in solid!\n");
1005         }
1006         Con_Print("\n");
1007 #else
1008         if (VectorLength2(rhc.dist))
1009                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1010         else
1011                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1012 #endif
1013 }
1014
1015 static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
1016 {
1017         int num = model->brushq1.hulls[0].firstclipnode;
1018         mplane_t *plane;
1019         mclipnode_t *nodes = model->brushq1.hulls[0].clipnodes;
1020         mplane_t *planes = model->brushq1.hulls[0].planes;
1021         while (num >= 0)
1022         {
1023                 plane = planes + nodes[num].planenum;
1024                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
1025         }
1026         return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
1027 }
1028
1029 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
1030 {
1031 #if 1
1032         colbrushf_t cbox;
1033         colplanef_t cbox_planes[6];
1034         cbox.isaabb = true;
1035         cbox.hasaabbplanes = true;
1036         cbox.supercontents = boxsupercontents;
1037         cbox.numplanes = 6;
1038         cbox.numpoints = 0;
1039         cbox.numtriangles = 0;
1040         cbox.planes = cbox_planes;
1041         cbox.points = NULL;
1042         cbox.elements = NULL;
1043         cbox.markframe = 0;
1044         cbox.mins[0] = 0;
1045         cbox.mins[1] = 0;
1046         cbox.mins[2] = 0;
1047         cbox.maxs[0] = 0;
1048         cbox.maxs[1] = 0;
1049         cbox.maxs[2] = 0;
1050         cbox_planes[0].normal[0] =  1;cbox_planes[0].normal[1] =  0;cbox_planes[0].normal[2] =  0;cbox_planes[0].dist = cmaxs[0] - mins[0];
1051         cbox_planes[1].normal[0] = -1;cbox_planes[1].normal[1] =  0;cbox_planes[1].normal[2] =  0;cbox_planes[1].dist = maxs[0] - cmins[0];
1052         cbox_planes[2].normal[0] =  0;cbox_planes[2].normal[1] =  1;cbox_planes[2].normal[2] =  0;cbox_planes[2].dist = cmaxs[1] - mins[1];
1053         cbox_planes[3].normal[0] =  0;cbox_planes[3].normal[1] = -1;cbox_planes[3].normal[2] =  0;cbox_planes[3].dist = maxs[1] - cmins[1];
1054         cbox_planes[4].normal[0] =  0;cbox_planes[4].normal[1] =  0;cbox_planes[4].normal[2] =  1;cbox_planes[4].dist = cmaxs[2] - mins[2];
1055         cbox_planes[5].normal[0] =  0;cbox_planes[5].normal[1] =  0;cbox_planes[5].normal[2] = -1;cbox_planes[5].dist = maxs[2] - cmins[2];
1056         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
1057         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
1058         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
1059         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
1060         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
1061         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
1062         memset(trace, 0, sizeof(trace_t));
1063         trace->hitsupercontentsmask = hitsupercontentsmask;
1064         trace->fraction = 1;
1065         trace->realfraction = 1;
1066         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
1067 #else
1068         RecursiveHullCheckTraceInfo_t rhc;
1069         static hull_t box_hull;
1070         static mclipnode_t box_clipnodes[6];
1071         static mplane_t box_planes[6];
1072         // fill in a default trace
1073         memset(&rhc, 0, sizeof(rhc));
1074         memset(trace, 0, sizeof(trace_t));
1075         //To keep everything totally uniform, bounding boxes are turned into small
1076         //BSP trees instead of being compared directly.
1077         // create a temp hull from bounding box sizes
1078         box_planes[0].dist = cmaxs[0] - mins[0];
1079         box_planes[1].dist = cmins[0] - maxs[0];
1080         box_planes[2].dist = cmaxs[1] - mins[1];
1081         box_planes[3].dist = cmins[1] - maxs[1];
1082         box_planes[4].dist = cmaxs[2] - mins[2];
1083         box_planes[5].dist = cmins[2] - maxs[2];
1084 #if COLLISIONPARANOID >= 3
1085         Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
1086 #endif
1087
1088         if (box_hull.clipnodes == NULL)
1089         {
1090                 int i, side;
1091
1092                 //Set up the planes and clipnodes so that the six floats of a bounding box
1093                 //can just be stored out and get a proper hull_t structure.
1094
1095                 box_hull.clipnodes = box_clipnodes;
1096                 box_hull.planes = box_planes;
1097                 box_hull.firstclipnode = 0;
1098                 box_hull.lastclipnode = 5;
1099
1100                 for (i = 0;i < 6;i++)
1101                 {
1102                         box_clipnodes[i].planenum = i;
1103
1104                         side = i&1;
1105
1106                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
1107                         if (i != 5)
1108                                 box_clipnodes[i].children[side^1] = i + 1;
1109                         else
1110                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
1111
1112                         box_planes[i].type = i>>1;
1113                         box_planes[i].normal[i>>1] = 1;
1114                 }
1115         }
1116
1117         // trace a line through the generated clipping hull
1118         //rhc.boxsupercontents = boxsupercontents;
1119         rhc.hull = &box_hull;
1120         rhc.trace = trace;
1121         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1122         rhc.trace->fraction = 1;
1123         rhc.trace->realfraction = 1;
1124         rhc.trace->allsolid = true;
1125         VectorCopy(start, rhc.start);
1126         VectorCopy(end, rhc.end);
1127         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1128         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1129         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1130         if (rhc.trace->startsupercontents)
1131                 rhc.trace->startsupercontents = boxsupercontents;
1132 #endif
1133 }
1134
1135 void Collision_ClipTrace_Point(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, const texture_t *boxtexture)
1136 {
1137         memset(trace, 0, sizeof(trace_t));
1138         trace->fraction = 1;
1139         trace->realfraction = 1;
1140         if (BoxesOverlap(start, start, cmins, cmaxs))
1141         {
1142                 trace->startsupercontents |= boxsupercontents;
1143                 if (hitsupercontentsmask & boxsupercontents)
1144                 {
1145                         trace->startsolid = true;
1146                         trace->allsolid = true;
1147                 }
1148         }
1149 }
1150
1151 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1152 {
1153         trace_t trace;
1154         model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
1155         return trace.fraction == 1;
1156 }
1157
1158 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(dp_model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
1159 {
1160         int side;
1161         float front, back;
1162         float mid, distz = endz - startz;
1163
1164 loc0:
1165         if (!node->plane)
1166                 return false;           // didn't hit anything
1167
1168         switch (node->plane->type)
1169         {
1170         case PLANE_X:
1171                 node = node->children[x < node->plane->dist];
1172                 goto loc0;
1173         case PLANE_Y:
1174                 node = node->children[y < node->plane->dist];
1175                 goto loc0;
1176         case PLANE_Z:
1177                 side = startz < node->plane->dist;
1178                 if ((endz < node->plane->dist) == side)
1179                 {
1180                         node = node->children[side];
1181                         goto loc0;
1182                 }
1183                 // found an intersection
1184                 mid = node->plane->dist;
1185                 break;
1186         default:
1187                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1188                 front += startz * node->plane->normal[2];
1189                 back += endz * node->plane->normal[2];
1190                 side = front < node->plane->dist;
1191                 if ((back < node->plane->dist) == side)
1192                 {
1193                         node = node->children[side];
1194                         goto loc0;
1195                 }
1196                 // found an intersection
1197                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1198                 break;
1199         }
1200
1201         // go down front side
1202         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1203                 return true;    // hit something
1204         else
1205         {
1206                 // check for impact on this node
1207                 if (node->numsurfaces)
1208                 {
1209                         int i, dsi, dti, lmwidth, lmheight;
1210                         float ds, dt;
1211                         msurface_t *surface;
1212                         unsigned char *lightmap;
1213                         int maps, line3, size3;
1214                         float dsfrac;
1215                         float dtfrac;
1216                         float scale, w, w00, w01, w10, w11;
1217
1218                         surface = model->data_surfaces + node->firstsurface;
1219                         for (i = 0;i < node->numsurfaces;i++, surface++)
1220                         {
1221                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo || !surface->lightmapinfo->samples)
1222                                         continue;       // no lightmaps
1223
1224                                 // location we want to sample in the lightmap
1225                                 ds = ((x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0]) * 0.0625f;
1226                                 dt = ((x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1]) * 0.0625f;
1227
1228                                 // check the bounds
1229                                 dsi = (int)ds;
1230                                 dti = (int)dt;
1231                                 lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1232                                 lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1233
1234                                 // is it in bounds?
1235                                 if (dsi >= 0 && dsi < lmwidth-1 && dti >= 0 && dti < lmheight-1)
1236                                 {
1237                                         // calculate bilinear interpolation factors
1238                                         // and also multiply by fixedpoint conversion factors
1239                                         dsfrac = ds - dsi;
1240                                         dtfrac = dt - dti;
1241                                         w00 = (1 - dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1242                                         w01 = (    dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1243                                         w10 = (1 - dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1244                                         w11 = (    dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1245
1246                                         // values for pointer math
1247                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1248                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1249
1250                                         // look up the pixel
1251                                         lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LordHavoc: *3 for colored lighting
1252
1253                                         // bilinear filter each lightmap style, and sum them
1254                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1255                                         {
1256                                                 scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]];
1257                                                 w = w00 * scale;VectorMA(ambientcolor, w, lightmap            , ambientcolor);
1258                                                 w = w01 * scale;VectorMA(ambientcolor, w, lightmap + 3        , ambientcolor);
1259                                                 w = w10 * scale;VectorMA(ambientcolor, w, lightmap + line3    , ambientcolor);
1260                                                 w = w11 * scale;VectorMA(ambientcolor, w, lightmap + line3 + 3, ambientcolor);
1261                                                 lightmap += size3;
1262                                         }
1263
1264                                         return true; // success
1265                                 }
1266                         }
1267                 }
1268
1269                 // go down back side
1270                 node = node->children[side ^ 1];
1271                 startz = mid;
1272                 distz = endz - startz;
1273                 goto loc0;
1274         }
1275 }
1276
1277 void Mod_Q1BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1278 {
1279         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1280         VectorSet(diffusenormal, 0, 0, 1);
1281
1282         if (!model->brushq1.lightdata)
1283         {
1284                 VectorSet(ambientcolor, 1, 1, 1);
1285                 VectorSet(diffusecolor, 0, 0, 0);
1286                 return;
1287         }
1288
1289         Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2] + 0.125, p[2] - 65536);
1290 }
1291
1292 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1293 {
1294         int c;
1295         unsigned char *outstart = out;
1296         while (out < outend)
1297         {
1298                 if (in == inend)
1299                 {
1300                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1301                         return;
1302                 }
1303                 c = *in++;
1304                 if (c)
1305                         *out++ = c;
1306                 else
1307                 {
1308                         if (in == inend)
1309                         {
1310                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1311                                 return;
1312                         }
1313                         for (c = *in++;c > 0;c--)
1314                         {
1315                                 if (out == outend)
1316                                 {
1317                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1318                                         return;
1319                                 }
1320                                 *out++ = 0;
1321                         }
1322                 }
1323         }
1324 }
1325
1326 /*
1327 =============
1328 R_Q1BSP_LoadSplitSky
1329
1330 A sky texture is 256*128, with the right side being a masked overlay
1331 ==============
1332 */
1333 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1334 {
1335         int x, y;
1336         int w = width/2;
1337         int h = height;
1338         unsigned *solidpixels = Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1339         unsigned *alphapixels = Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1340
1341         // allocate a texture pool if we need it
1342         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1343                 loadmodel->texturepool = R_AllocTexturePool();
1344
1345         if (bytesperpixel == 4)
1346         {
1347                 for (y = 0;y < h;y++)
1348                 {
1349                         for (x = 0;x < w;x++)
1350                         {
1351                                 solidpixels[y*w+x] = ((unsigned *)src)[y*width+x+w];
1352                                 alphapixels[y*w+x] = ((unsigned *)src)[y*width+x];
1353                         }
1354                 }
1355         }
1356         else
1357         {
1358                 // make an average value for the back to avoid
1359                 // a fringe on the top level
1360                 int p, r, g, b;
1361                 union
1362                 {
1363                         unsigned int i;
1364                         unsigned char b[4];
1365                 }
1366                 bgra;
1367                 r = g = b = 0;
1368                 for (y = 0;y < h;y++)
1369                 {
1370                         for (x = 0;x < w;x++)
1371                         {
1372                                 p = src[x*width+y+w];
1373                                 r += palette_rgb[p][0];
1374                                 g += palette_rgb[p][1];
1375                                 b += palette_rgb[p][2];
1376                         }
1377                 }
1378                 bgra.b[2] = r/(w*h);
1379                 bgra.b[1] = g/(w*h);
1380                 bgra.b[0] = b/(w*h);
1381                 bgra.b[3] = 0;
1382                 for (y = 0;y < h;y++)
1383                 {
1384                         for (x = 0;x < w;x++)
1385                         {
1386                                 solidpixels[y*w+x] = palette_bgra_complete[src[y*width+x+w]];
1387                                 p = src[y*width+x];
1388                                 alphapixels[y*w+x] = p ? palette_bgra_complete[p] : bgra.i;
1389                         }
1390                 }
1391         }
1392
1393         loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture", 0         , (unsigned char *) solidpixels, w, h);
1394         loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA, (unsigned char *) alphapixels, w, h);
1395         Mem_Free(solidpixels);
1396         Mem_Free(alphapixels);
1397 }
1398
1399 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1400 {
1401         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1402         skinframe_t *skinframe;
1403         miptex_t *dmiptex;
1404         texture_t *tx, *tx2, *anims[10], *altanims[10];
1405         dmiptexlump_t *m;
1406         unsigned char *data, *mtdata;
1407         const char *s;
1408         char mapname[MAX_QPATH], name[MAX_QPATH];
1409         unsigned char zero[4];
1410
1411         memset(zero, 0, sizeof(zero));
1412
1413         loadmodel->data_textures = NULL;
1414
1415         // add two slots for notexture walls and notexture liquids
1416         if (l->filelen)
1417         {
1418                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1419                 m->nummiptex = LittleLong (m->nummiptex);
1420                 loadmodel->num_textures = m->nummiptex + 2;
1421                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1422         }
1423         else
1424         {
1425                 m = NULL;
1426                 loadmodel->num_textures = 2;
1427                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1428         }
1429
1430         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1431
1432         // fill out all slots with notexture
1433         if (cls.state != ca_dedicated)
1434                 skinframe = R_SkinFrame_LoadMissing();
1435         else
1436                 skinframe = NULL;
1437         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1438         {
1439                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1440                 tx->width = 16;
1441                 tx->height = 16;
1442                 if (cls.state != ca_dedicated)
1443                 {
1444                         tx->numskinframes = 1;
1445                         tx->skinframerate = 1;
1446                         tx->skinframes[0] = skinframe;
1447                         tx->currentskinframe = tx->skinframes[0];
1448                 }
1449                 tx->basematerialflags = MATERIALFLAG_WALL;
1450                 if (i == loadmodel->num_textures - 1)
1451                 {
1452                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1453                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1454                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1455                 }
1456                 else
1457                 {
1458                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1459                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1460                 }
1461                 tx->currentframe = tx;
1462
1463                 // clear water settings
1464                 tx->reflectmin = 0;
1465                 tx->reflectmax = 1;
1466                 tx->refractfactor = 1;
1467                 Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
1468                 tx->reflectfactor = 1;
1469                 Vector4Set(tx->reflectcolor4f, 1, 1, 1, 1);
1470                 tx->r_water_wateralpha = 1;
1471                 tx->offsetmapping = OFFSETMAPPING_OFF;
1472                 tx->offsetscale = 1;
1473                 tx->specularscalemod = 1;
1474                 tx->specularpowermod = 1;
1475         }
1476
1477         if (!m)
1478         {
1479                 Con_Printf("%s: no miptex lump to load textures from\n", loadmodel->name);
1480                 return;
1481         }
1482
1483         s = loadmodel->name;
1484         if (!strncasecmp(s, "maps/", 5))
1485                 s += 5;
1486         FS_StripExtension(s, mapname, sizeof(mapname));
1487
1488         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1489         dofs = m->dataofs;
1490         // LordHavoc: mostly rewritten map texture loader
1491         for (i = 0;i < m->nummiptex;i++)
1492         {
1493                 dofs[i] = LittleLong(dofs[i]);
1494                 if (r_nosurftextures.integer)
1495                         continue;
1496                 if (dofs[i] == -1)
1497                 {
1498                         Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1499                         continue;
1500                 }
1501                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1502
1503                 // copy name, but only up to 16 characters
1504                 // (the output buffer can hold more than this, but the input buffer is
1505                 //  only 16)
1506                 for (j = 0;j < 16 && dmiptex->name[j];j++)
1507                         name[j] = dmiptex->name[j];
1508                 name[j] = 0;
1509
1510                 if (!name[0])
1511                 {
1512                         dpsnprintf(name, sizeof(name), "unnamed%i", i);
1513                         Con_DPrintf("%s: warning: renaming unnamed texture to %s\n", loadmodel->name, name);
1514                 }
1515
1516                 mtwidth = LittleLong(dmiptex->width);
1517                 mtheight = LittleLong(dmiptex->height);
1518                 mtdata = NULL;
1519                 j = LittleLong(dmiptex->offsets[0]);
1520                 if (j)
1521                 {
1522                         // texture included
1523                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1524                         {
1525                                 Con_Printf("%s: Texture \"%s\" is corrupt or incomplete\n", loadmodel->name, dmiptex->name);
1526                                 continue;
1527                         }
1528                         mtdata = (unsigned char *)dmiptex + j;
1529                 }
1530
1531                 if ((mtwidth & 15) || (mtheight & 15))
1532                         Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, dmiptex->name);
1533
1534                 // LordHavoc: force all names to lowercase
1535                 for (j = 0;name[j];j++)
1536                         if (name[j] >= 'A' && name[j] <= 'Z')
1537                                 name[j] += 'a' - 'A';
1538
1539                 if (dmiptex->name[0] && Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, name, false, false, 0))
1540                         continue;
1541
1542                 tx = loadmodel->data_textures + i;
1543                 strlcpy(tx->name, name, sizeof(tx->name));
1544                 tx->width = mtwidth;
1545                 tx->height = mtheight;
1546
1547                 if (tx->name[0] == '*')
1548                 {
1549                         if (!strncmp(tx->name, "*lava", 5))
1550                         {
1551                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1552                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1553                         }
1554                         else if (!strncmp(tx->name, "*slime", 6))
1555                         {
1556                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1557                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1558                         }
1559                         else
1560                         {
1561                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1562                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1563                         }
1564                 }
1565                 else if (!strncmp(tx->name, "sky", 3))
1566                 {
1567                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1568                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1569                 }
1570                 else
1571                 {
1572                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1573                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1574                 }
1575
1576                 if (cls.state != ca_dedicated)
1577                 {
1578                         // LordHavoc: HL sky textures are entirely different than quake
1579                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
1580                         {
1581                                 data = loadimagepixelsbgra(tx->name, false, false, r_texture_convertsRGB_skin.integer);
1582                                 if (data && image_width == image_height * 2)
1583                                 {
1584                                         R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1585                                         Mem_Free(data);
1586                                 }
1587                                 else if (mtdata != NULL)
1588                                         R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1589                         }
1590                         else
1591                         {
1592                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1593                                 if (!skinframe)
1594                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_ALPHA | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1595                                 if (!skinframe)
1596                                 {
1597                                         // did not find external texture, load it from the bsp or wad3
1598                                         if (loadmodel->brush.ishlbsp)
1599                                         {
1600                                                 // internal texture overrides wad
1601                                                 unsigned char *pixels, *freepixels;
1602                                                 pixels = freepixels = NULL;
1603                                                 if (mtdata)
1604                                                         pixels = W_ConvertWAD3TextureBGRA(dmiptex);
1605                                                 if (pixels == NULL)
1606                                                         pixels = freepixels = W_GetTextureBGRA(tx->name);
1607                                                 if (pixels != NULL)
1608                                                 {
1609                                                         tx->width = image_width;
1610                                                         tx->height = image_height;
1611                                                         skinframe = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0), pixels, image_width, image_height);
1612                                                 }
1613                                                 if (freepixels)
1614                                                         Mem_Free(freepixels);
1615                                         }
1616                                         else if (mtdata) // texture included
1617                                                 skinframe = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, r_fullbrights.integer, mtdata, tx->width, tx->height);
1618                                 }
1619                                 // if skinframe is still NULL the "missing" texture will be used
1620                                 if (skinframe)
1621                                         tx->skinframes[0] = skinframe;
1622                         }
1623
1624                         tx->basematerialflags = MATERIALFLAG_WALL;
1625                         if (tx->name[0] == '*')
1626                         {
1627                                 // LordHavoc: some turbulent textures should not be affected by wateralpha
1628                                 if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1629                                 {
1630                                         // replace the texture with transparent black
1631                                         Vector4Set(zero, 128, 128, 128, 128);
1632                                         tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_ALPHA, zero, 1, 1);
1633                                         tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
1634                                 }
1635                                 else if (!strncmp(tx->name,"*lava",5)
1636                                  || !strncmp(tx->name,"*teleport",9)
1637                                  || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1638                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1639                                 else
1640                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
1641                                 if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1642                                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1643                         }
1644                         else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1645                         {
1646                                 // replace the texture with black
1647                                 tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, 0, zero, 1, 1);
1648                                 tx->basematerialflags |= MATERIALFLAG_REFLECTION;
1649                         }
1650                         else if (!strncmp(tx->name, "sky", 3))
1651                                 tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1652                         else if (!strcmp(tx->name, "caulk"))
1653                                 tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
1654                         else if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1655                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1656
1657                         // start out with no animation
1658                         tx->currentframe = tx;
1659                         tx->currentskinframe = tx->skinframes[0];
1660                 }
1661         }
1662
1663         // sequence the animations
1664         for (i = 0;i < m->nummiptex;i++)
1665         {
1666                 tx = loadmodel->data_textures + i;
1667                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1668                         continue;
1669                 if (tx->anim_total[0] || tx->anim_total[1])
1670                         continue;       // already sequenced
1671
1672                 // find the number of frames in the animation
1673                 memset(anims, 0, sizeof(anims));
1674                 memset(altanims, 0, sizeof(altanims));
1675
1676                 for (j = i;j < m->nummiptex;j++)
1677                 {
1678                         tx2 = loadmodel->data_textures + j;
1679                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1680                                 continue;
1681
1682                         num = tx2->name[1];
1683                         if (num >= '0' && num <= '9')
1684                                 anims[num - '0'] = tx2;
1685                         else if (num >= 'a' && num <= 'j')
1686                                 altanims[num - 'a'] = tx2;
1687                         else
1688                                 Con_Printf("Bad animating texture %s\n", tx->name);
1689                 }
1690
1691                 max = altmax = 0;
1692                 for (j = 0;j < 10;j++)
1693                 {
1694                         if (anims[j])
1695                                 max = j + 1;
1696                         if (altanims[j])
1697                                 altmax = j + 1;
1698                 }
1699                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1700
1701                 incomplete = false;
1702                 for (j = 0;j < max;j++)
1703                 {
1704                         if (!anims[j])
1705                         {
1706                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1707                                 incomplete = true;
1708                         }
1709                 }
1710                 for (j = 0;j < altmax;j++)
1711                 {
1712                         if (!altanims[j])
1713                         {
1714                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1715                                 incomplete = true;
1716                         }
1717                 }
1718                 if (incomplete)
1719                         continue;
1720
1721                 if (altmax < 1)
1722                 {
1723                         // if there is no alternate animation, duplicate the primary
1724                         // animation into the alternate
1725                         altmax = max;
1726                         for (k = 0;k < 10;k++)
1727                                 altanims[k] = anims[k];
1728                 }
1729
1730                 // link together the primary animation
1731                 for (j = 0;j < max;j++)
1732                 {
1733                         tx2 = anims[j];
1734                         tx2->animated = true;
1735                         tx2->anim_total[0] = max;
1736                         tx2->anim_total[1] = altmax;
1737                         for (k = 0;k < 10;k++)
1738                         {
1739                                 tx2->anim_frames[0][k] = anims[k];
1740                                 tx2->anim_frames[1][k] = altanims[k];
1741                         }
1742                 }
1743
1744                 // if there really is an alternate anim...
1745                 if (anims[0] != altanims[0])
1746                 {
1747                         // link together the alternate animation
1748                         for (j = 0;j < altmax;j++)
1749                         {
1750                                 tx2 = altanims[j];
1751                                 tx2->animated = true;
1752                                 // the primary/alternate are reversed here
1753                                 tx2->anim_total[0] = altmax;
1754                                 tx2->anim_total[1] = max;
1755                                 for (k = 0;k < 10;k++)
1756                                 {
1757                                         tx2->anim_frames[0][k] = altanims[k];
1758                                         tx2->anim_frames[1][k] = anims[k];
1759                                 }
1760                         }
1761                 }
1762         }
1763 }
1764
1765 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1766 {
1767         int i;
1768         unsigned char *in, *out, *data, d;
1769         char litfilename[MAX_QPATH];
1770         char dlitfilename[MAX_QPATH];
1771         fs_offset_t filesize;
1772         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1773         {
1774                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1775                 for (i=0; i<l->filelen; i++)
1776                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1777         }
1778         else // LordHavoc: bsp version 29 (normal white lighting)
1779         {
1780                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1781                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1782                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1783                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1784                 strlcat (litfilename, ".lit", sizeof (litfilename));
1785                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1786                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1787                 if (data)
1788                 {
1789                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1790                         {
1791                                 i = LittleLong(((int *)data)[1]);
1792                                 if (i == 1)
1793                                 {
1794                                         if (developer_loading.integer)
1795                                                 Con_Printf("loaded %s\n", litfilename);
1796                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1797                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1798                                         Mem_Free(data);
1799                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1800                                         if (data)
1801                                         {
1802                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1803                                                 {
1804                                                         i = LittleLong(((int *)data)[1]);
1805                                                         if (i == 1)
1806                                                         {
1807                                                                 if (developer_loading.integer)
1808                                                                         Con_Printf("loaded %s\n", dlitfilename);
1809                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1810                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1811                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1812                                                                 loadmodel->brushq3.deluxemapping = true;
1813                                                         }
1814                                                 }
1815                                                 Mem_Free(data);
1816                                                 data = NULL;
1817                                         }
1818                                         return;
1819                                 }
1820                                 else
1821                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1822                         }
1823                         else if (filesize == 8)
1824                                 Con_Print("Empty .lit file, ignoring\n");
1825                         else
1826                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1827                         if (data)
1828                         {
1829                                 Mem_Free(data);
1830                                 data = NULL;
1831                         }
1832                 }
1833                 // LordHavoc: oh well, expand the white lighting data
1834                 if (!l->filelen)
1835                         return;
1836                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1837                 in = mod_base + l->fileofs;
1838                 out = loadmodel->brushq1.lightdata;
1839                 for (i = 0;i < l->filelen;i++)
1840                 {
1841                         d = *in++;
1842                         *out++ = d;
1843                         *out++ = d;
1844                         *out++ = d;
1845                 }
1846         }
1847 }
1848
1849 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1850 {
1851         loadmodel->brushq1.num_compressedpvs = 0;
1852         loadmodel->brushq1.data_compressedpvs = NULL;
1853         if (!l->filelen)
1854                 return;
1855         loadmodel->brushq1.num_compressedpvs = l->filelen;
1856         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1857         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1858 }
1859
1860 // used only for HalfLife maps
1861 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1862 {
1863         char key[128], value[4096];
1864         int i, j, k;
1865         if (!data)
1866                 return;
1867         if (!COM_ParseToken_Simple(&data, false, false))
1868                 return; // error
1869         if (com_token[0] != '{')
1870                 return; // error
1871         while (1)
1872         {
1873                 if (!COM_ParseToken_Simple(&data, false, false))
1874                         return; // error
1875                 if (com_token[0] == '}')
1876                         break; // end of worldspawn
1877                 if (com_token[0] == '_')
1878                         strlcpy(key, com_token + 1, sizeof(key));
1879                 else
1880                         strlcpy(key, com_token, sizeof(key));
1881                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1882                         key[strlen(key)-1] = 0;
1883                 if (!COM_ParseToken_Simple(&data, false, false))
1884                         return; // error
1885                 dpsnprintf(value, sizeof(value), "%s", com_token);
1886                 if (!strcmp("wad", key)) // for HalfLife maps
1887                 {
1888                         if (loadmodel->brush.ishlbsp)
1889                         {
1890                                 j = 0;
1891                                 for (i = 0;i < (int)sizeof(value);i++)
1892                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1893                                                 break;
1894                                 if (value[i])
1895                                 {
1896                                         for (;i < (int)sizeof(value);i++)
1897                                         {
1898                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1899                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1900                                                         j = i+1;
1901                                                 else if (value[i] == ';' || value[i] == 0)
1902                                                 {
1903                                                         k = value[i];
1904                                                         value[i] = 0;
1905                                                         W_LoadTextureWadFile(&value[j], false);
1906                                                         j = i+1;
1907                                                         if (!k)
1908                                                                 break;
1909                                                 }
1910                                         }
1911                                 }
1912                         }
1913                 }
1914         }
1915 }
1916
1917 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1918 {
1919         loadmodel->brush.entities = NULL;
1920         if (!l->filelen)
1921                 return;
1922         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
1923         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1924         loadmodel->brush.entities[l->filelen] = 0;
1925         if (loadmodel->brush.ishlbsp)
1926                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1927 }
1928
1929
1930 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1931 {
1932         dvertex_t       *in;
1933         mvertex_t       *out;
1934         int                     i, count;
1935
1936         in = (dvertex_t *)(mod_base + l->fileofs);
1937         if (l->filelen % sizeof(*in))
1938                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1939         count = l->filelen / sizeof(*in);
1940         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1941
1942         loadmodel->brushq1.vertexes = out;
1943         loadmodel->brushq1.numvertexes = count;
1944
1945         for ( i=0 ; i<count ; i++, in++, out++)
1946         {
1947                 out->position[0] = LittleFloat(in->point[0]);
1948                 out->position[1] = LittleFloat(in->point[1]);
1949                 out->position[2] = LittleFloat(in->point[2]);
1950         }
1951 }
1952
1953 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1954 // can be used for this
1955 // REMOVEME
1956 int SB_ReadInt (unsigned char **buffer)
1957 {
1958         int     i;
1959         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1960         (*buffer) += 4;
1961         return i;
1962 }
1963
1964 // REMOVEME
1965 float SB_ReadFloat (unsigned char **buffer)
1966 {
1967         union
1968         {
1969                 int             i;
1970                 float   f;
1971         } u;
1972
1973         u.i = SB_ReadInt (buffer);
1974         return u.f;
1975 }
1976
1977 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1978 {
1979         unsigned char           *index;
1980         dmodel_t        *out;
1981         int                     i, j, count;
1982
1983         index = (unsigned char *)(mod_base + l->fileofs);
1984         if (l->filelen % (48+4*hullinfo->filehulls))
1985                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1986
1987         count = l->filelen / (48+4*hullinfo->filehulls);
1988         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1989
1990         loadmodel->brushq1.submodels = out;
1991         loadmodel->brush.numsubmodels = count;
1992
1993         for (i = 0; i < count; i++, out++)
1994         {
1995         // spread out the mins / maxs by a pixel
1996                 out->mins[0] = SB_ReadFloat (&index) - 1;
1997                 out->mins[1] = SB_ReadFloat (&index) - 1;
1998                 out->mins[2] = SB_ReadFloat (&index) - 1;
1999                 out->maxs[0] = SB_ReadFloat (&index) + 1;
2000                 out->maxs[1] = SB_ReadFloat (&index) + 1;
2001                 out->maxs[2] = SB_ReadFloat (&index) + 1;
2002                 out->origin[0] = SB_ReadFloat (&index);
2003                 out->origin[1] = SB_ReadFloat (&index);
2004                 out->origin[2] = SB_ReadFloat (&index);
2005                 for (j = 0; j < hullinfo->filehulls; j++)
2006                         out->headnode[j] = SB_ReadInt (&index);
2007                 out->visleafs = SB_ReadInt (&index);
2008                 out->firstface = SB_ReadInt (&index);
2009                 out->numfaces = SB_ReadInt (&index);
2010         }
2011 }
2012
2013 static void Mod_Q1BSP_LoadEdges(lump_t *l)
2014 {
2015         dedge_t *in;
2016         medge_t *out;
2017         int     i, count;
2018
2019         in = (dedge_t *)(mod_base + l->fileofs);
2020         if (l->filelen % sizeof(*in))
2021                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
2022         count = l->filelen / sizeof(*in);
2023         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2024
2025         loadmodel->brushq1.edges = out;
2026         loadmodel->brushq1.numedges = count;
2027
2028         for ( i=0 ; i<count ; i++, in++, out++)
2029         {
2030                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
2031                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
2032                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
2033                 {
2034                         Con_Printf("Mod_Q1BSP_LoadEdges: %s has invalid vertex indices in edge %i (vertices %i %i >= numvertices %i)\n", loadmodel->name, i, out->v[0], out->v[1], loadmodel->brushq1.numvertexes);
2035                         if(!loadmodel->brushq1.numvertexes)
2036                                 Host_Error("Mod_Q1BSP_LoadEdges: %s has edges but no vertexes, cannot fix\n", loadmodel->name);
2037
2038                         out->v[0] = 0;
2039                         out->v[1] = 0;
2040                 }
2041         }
2042 }
2043
2044 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
2045 {
2046         texinfo_t *in;
2047         mtexinfo_t *out;
2048         int i, j, k, count, miptex;
2049
2050         in = (texinfo_t *)(mod_base + l->fileofs);
2051         if (l->filelen % sizeof(*in))
2052                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
2053         count = l->filelen / sizeof(*in);
2054         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2055
2056         loadmodel->brushq1.texinfo = out;
2057         loadmodel->brushq1.numtexinfo = count;
2058
2059         for (i = 0;i < count;i++, in++, out++)
2060         {
2061                 for (k = 0;k < 2;k++)
2062                         for (j = 0;j < 4;j++)
2063                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
2064
2065                 miptex = LittleLong(in->miptex);
2066                 out->flags = LittleLong(in->flags);
2067
2068                 out->texture = NULL;
2069                 if (loadmodel->data_textures)
2070                 {
2071                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
2072                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
2073                         else
2074                                 out->texture = loadmodel->data_textures + miptex;
2075                 }
2076                 if (out->flags & TEX_SPECIAL)
2077                 {
2078                         // if texture chosen is NULL or the shader needs a lightmap,
2079                         // force to notexture water shader
2080                         if (out->texture == NULL)
2081                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
2082                 }
2083                 else
2084                 {
2085                         // if texture chosen is NULL, force to notexture
2086                         if (out->texture == NULL)
2087                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
2088                 }
2089         }
2090 }
2091
2092 #if 0
2093 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
2094 {
2095         int             i, j;
2096         float   *v;
2097
2098         mins[0] = mins[1] = mins[2] = 9999;
2099         maxs[0] = maxs[1] = maxs[2] = -9999;
2100         v = verts;
2101         for (i = 0;i < numverts;i++)
2102         {
2103                 for (j = 0;j < 3;j++, v++)
2104                 {
2105                         if (*v < mins[j])
2106                                 mins[j] = *v;
2107                         if (*v > maxs[j])
2108                                 maxs[j] = *v;
2109                 }
2110         }
2111 }
2112
2113 #define MAX_SUBDIVPOLYTRIANGLES 4096
2114 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
2115
2116 static int subdivpolyverts, subdivpolytriangles;
2117 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2118 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2119
2120 static int subdivpolylookupvert(vec3_t v)
2121 {
2122         int i;
2123         for (i = 0;i < subdivpolyverts;i++)
2124                 if (subdivpolyvert[i][0] == v[0]
2125                  && subdivpolyvert[i][1] == v[1]
2126                  && subdivpolyvert[i][2] == v[2])
2127                         return i;
2128         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2129                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2130         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2131         return subdivpolyverts++;
2132 }
2133
2134 static void SubdividePolygon(int numverts, float *verts)
2135 {
2136         int             i, i1, i2, i3, f, b, c, p;
2137         vec3_t  mins, maxs, front[256], back[256];
2138         float   m, *pv, *cv, dist[256], frac;
2139
2140         if (numverts > 250)
2141                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2142
2143         BoundPoly(numverts, verts, mins, maxs);
2144
2145         for (i = 0;i < 3;i++)
2146         {
2147                 m = (mins[i] + maxs[i]) * 0.5;
2148                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2149                 if (maxs[i] - m < 8)
2150                         continue;
2151                 if (m - mins[i] < 8)
2152                         continue;
2153
2154                 // cut it
2155                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2156                         dist[c] = cv[i] - m;
2157
2158                 f = b = 0;
2159                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2160                 {
2161                         if (dist[p] >= 0)
2162                         {
2163                                 VectorCopy(pv, front[f]);
2164                                 f++;
2165                         }
2166                         if (dist[p] <= 0)
2167                         {
2168                                 VectorCopy(pv, back[b]);
2169                                 b++;
2170                         }
2171                         if (dist[p] == 0 || dist[c] == 0)
2172                                 continue;
2173                         if ((dist[p] > 0) != (dist[c] > 0) )
2174                         {
2175                                 // clip point
2176                                 frac = dist[p] / (dist[p] - dist[c]);
2177                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2178                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2179                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2180                                 f++;
2181                                 b++;
2182                         }
2183                 }
2184
2185                 SubdividePolygon(f, front[0]);
2186                 SubdividePolygon(b, back[0]);
2187                 return;
2188         }
2189
2190         i1 = subdivpolylookupvert(verts);
2191         i2 = subdivpolylookupvert(verts + 3);
2192         for (i = 2;i < numverts;i++)
2193         {
2194                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2195                 {
2196                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2197                         return;
2198                 }
2199
2200                 i3 = subdivpolylookupvert(verts + i * 3);
2201                 subdivpolyindex[subdivpolytriangles][0] = i1;
2202                 subdivpolyindex[subdivpolytriangles][1] = i2;
2203                 subdivpolyindex[subdivpolytriangles][2] = i3;
2204                 i2 = i3;
2205                 subdivpolytriangles++;
2206         }
2207 }
2208
2209 //Breaks a polygon up along axial 64 unit
2210 //boundaries so that turbulent and sky warps
2211 //can be done reasonably.
2212 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2213 {
2214         int i, j;
2215         surfvertex_t *v;
2216         surfmesh_t *mesh;
2217
2218         subdivpolytriangles = 0;
2219         subdivpolyverts = 0;
2220         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2221         if (subdivpolytriangles < 1)
2222                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2223
2224         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2225         mesh->num_vertices = subdivpolyverts;
2226         mesh->num_triangles = subdivpolytriangles;
2227         mesh->vertex = (surfvertex_t *)(mesh + 1);
2228         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2229         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2230
2231         for (i = 0;i < mesh->num_triangles;i++)
2232                 for (j = 0;j < 3;j++)
2233                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2234
2235         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2236         {
2237                 VectorCopy(subdivpolyvert[i], v->v);
2238                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2239                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2240         }
2241 }
2242 #endif
2243
2244 extern cvar_t gl_max_lightmapsize;
2245 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2246 {
2247         dface_t *in;
2248         msurface_t *surface;
2249         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber, lightmapsize, totallightmapsamples;
2250         float texmins[2], texmaxs[2], val;
2251         rtexture_t *lightmaptexture, *deluxemaptexture;
2252
2253         in = (dface_t *)(mod_base + l->fileofs);
2254         if (l->filelen % sizeof(*in))
2255                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2256         count = l->filelen / sizeof(*in);
2257         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2258         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2259
2260         loadmodel->num_surfaces = count;
2261
2262         loadmodel->brushq1.firstrender = true;
2263         loadmodel->brushq1.lightmapupdateflags = (unsigned char *)Mem_Alloc(loadmodel->mempool, count*sizeof(unsigned char));
2264
2265         totalverts = 0;
2266         totaltris = 0;
2267         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2268         {
2269                 numedges = (unsigned short)LittleShort(in->numedges);
2270                 totalverts += numedges;
2271                 totaltris += numedges - 2;
2272         }
2273
2274         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2275
2276         lightmaptexture = NULL;
2277         deluxemaptexture = r_texture_blanknormalmap;
2278         lightmapnumber = 0;
2279         lightmapsize = bound(256, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d);
2280         totallightmapsamples = 0;
2281
2282         totalverts = 0;
2283         totaltris = 0;
2284         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2285         {
2286                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2287
2288                 // FIXME: validate edges, texinfo, etc?
2289                 firstedge = LittleLong(in->firstedge);
2290                 numedges = (unsigned short)LittleShort(in->numedges);
2291                 if ((unsigned int) firstedge > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges || (unsigned int) firstedge + (unsigned int) numedges > (unsigned int) loadmodel->brushq1.numsurfedges)
2292                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2293                 i = (unsigned short)LittleShort(in->texinfo);
2294                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2295                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2296                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2297                 surface->texture = surface->lightmapinfo->texinfo->texture;
2298
2299                 planenum = (unsigned short)LittleShort(in->planenum);
2300                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2301                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2302
2303                 //surface->flags = surface->texture->flags;
2304                 //if (LittleShort(in->side))
2305                 //      surface->flags |= SURF_PLANEBACK;
2306                 //surface->plane = loadmodel->brush.data_planes + planenum;
2307
2308                 surface->num_firstvertex = totalverts;
2309                 surface->num_vertices = numedges;
2310                 surface->num_firsttriangle = totaltris;
2311                 surface->num_triangles = numedges - 2;
2312                 totalverts += numedges;
2313                 totaltris += numedges - 2;
2314
2315                 // convert edges back to a normal polygon
2316                 for (i = 0;i < surface->num_vertices;i++)
2317                 {
2318                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2319                         float s, t;
2320                         // note: the q1bsp format does not allow a 0 surfedge (it would have no negative counterpart)
2321                         if (lindex >= 0)
2322                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2323                         else
2324                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2325                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2326                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2327                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2328                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2329                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2330                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2331                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2332                 }
2333
2334                 for (i = 0;i < surface->num_triangles;i++)
2335                 {
2336                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2337                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2338                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2339                 }
2340
2341                 // compile additional data about the surface geometry
2342                 Mod_BuildNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_normal3f, true);
2343                 Mod_BuildTextureVectorsFromNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle), loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
2344                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2345
2346                 // generate surface extents information
2347                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2348                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2349                 for (i = 1;i < surface->num_vertices;i++)
2350                 {
2351                         for (j = 0;j < 2;j++)
2352                         {
2353                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2354                                 texmins[j] = min(texmins[j], val);
2355                                 texmaxs[j] = max(texmaxs[j], val);
2356                         }
2357                 }
2358                 for (i = 0;i < 2;i++)
2359                 {
2360                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2361                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2362                 }
2363
2364                 smax = surface->lightmapinfo->extents[0] >> 4;
2365                 tmax = surface->lightmapinfo->extents[1] >> 4;
2366                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2367                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2368
2369                 // lighting info
2370                 for (i = 0;i < MAXLIGHTMAPS;i++)
2371                         surface->lightmapinfo->styles[i] = in->styles[i];
2372                 surface->lightmaptexture = NULL;
2373                 surface->deluxemaptexture = r_texture_blanknormalmap;
2374                 i = LittleLong(in->lightofs);
2375                 if (i == -1)
2376                 {
2377                         surface->lightmapinfo->samples = NULL;
2378 #if 1
2379                         // give non-lightmapped water a 1x white lightmap
2380                         if (surface->texture->name[0] == '*' && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2381                         {
2382                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2383                                 surface->lightmapinfo->styles[0] = 0;
2384                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2385                         }
2386 #endif
2387                 }
2388                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2389                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2390                 else // LordHavoc: white lighting (bsp version 29)
2391                 {
2392                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2393                         if (loadmodel->brushq1.nmaplightdata)
2394                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2395                 }
2396
2397                 // check if we should apply a lightmap to this
2398                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2399                 {
2400                         if (ssize > 256 || tsize > 256)
2401                                 Host_Error("Bad surface extents");
2402
2403                         if (lightmapsize < ssize)
2404                                 lightmapsize = ssize;
2405                         if (lightmapsize < tsize)
2406                                 lightmapsize = tsize;
2407
2408                         totallightmapsamples += ssize*tsize;
2409
2410                         // force lightmap upload on first time seeing the surface
2411                         //
2412                         // additionally this is used by the later code to see if a
2413                         // lightmap is needed on this surface (rather than duplicating the
2414                         // logic above)
2415                         loadmodel->brushq1.lightmapupdateflags[surfacenum] = true;
2416                 }
2417         }
2418
2419         // small maps (such as ammo boxes especially) don't need big lightmap
2420         // textures, so this code tries to guess a good size based on
2421         // totallightmapsamples (size of the lightmaps lump basically), as well as
2422         // trying to max out the size if there is a lot of lightmap data to store
2423         // additionally, never choose a lightmapsize that is smaller than the
2424         // largest surface encountered (as it would fail)
2425         i = lightmapsize;
2426         for (lightmapsize = 64; (lightmapsize < i) && (lightmapsize < bound(128, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d)) && (totallightmapsamples > lightmapsize*lightmapsize); lightmapsize*=2)
2427                 ;
2428
2429         // now that we've decided the lightmap texture size, we can do the rest
2430         if (cls.state != ca_dedicated)
2431         {
2432                 int stainmapsize = 0;
2433                 mod_alloclightmap_state_t allocState;
2434
2435                 Mod_AllocLightmap_Init(&allocState, lightmapsize, lightmapsize);
2436                 for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2437                 {
2438                         int i, iu, iv, lightmapx = 0, lightmapy = 0;
2439                         float u, v, ubase, vbase, uscale, vscale;
2440
2441                         if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2442                                 continue;
2443
2444                         smax = surface->lightmapinfo->extents[0] >> 4;
2445                         tmax = surface->lightmapinfo->extents[1] >> 4;
2446                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2447                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2448                         stainmapsize += ssize * tsize * 3;
2449
2450                         if (!lightmaptexture || !Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy))
2451                         {
2452                                 // allocate a texture pool if we need it
2453                                 if (loadmodel->texturepool == NULL)
2454                                         loadmodel->texturepool = R_AllocTexturePool();
2455                                 // could not find room, make a new lightmap
2456                                 loadmodel->brushq3.num_mergedlightmaps = lightmapnumber + 1;
2457                                 loadmodel->brushq3.data_lightmaps = Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_lightmaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_lightmaps[0]));
2458                                 loadmodel->brushq3.data_deluxemaps = Mem_Realloc(loadmodel->mempool, loadmodel->brushq3.data_deluxemaps, loadmodel->brushq3.num_mergedlightmaps * sizeof(loadmodel->brushq3.data_deluxemaps[0]));
2459                                 loadmodel->brushq3.data_lightmaps[lightmapnumber] = lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES, NULL);
2460                                 if (loadmodel->brushq1.nmaplightdata)
2461                                         loadmodel->brushq3.data_deluxemaps[lightmapnumber] = deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_ALLOWUPDATES, NULL);
2462                                 lightmapnumber++;
2463                                 Mod_AllocLightmap_Reset(&allocState);
2464                                 Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy);
2465                         }
2466                         surface->lightmaptexture = lightmaptexture;
2467                         surface->deluxemaptexture = deluxemaptexture;
2468                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2469                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2470
2471                         uscale = 1.0f / (float)lightmapsize;
2472                         vscale = 1.0f / (float)lightmapsize;
2473                         ubase = lightmapx * uscale;
2474                         vbase = lightmapy * vscale;
2475
2476                         for (i = 0;i < surface->num_vertices;i++)
2477                         {
2478                                 u = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3]) + 8 - surface->lightmapinfo->texturemins[0]) * (1.0 / 16.0);
2479                                 v = ((DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3]) + 8 - surface->lightmapinfo->texturemins[1]) * (1.0 / 16.0);
2480                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2481                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2482                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2483                                 iu = (int) u;
2484                                 iv = (int) v;
2485                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2486                         }
2487                 }
2488
2489                 if (cl_stainmaps.integer)
2490                 {
2491                         // allocate stainmaps for permanent marks on walls and clear white
2492                         unsigned char *stainsamples = NULL;
2493                         stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, stainmapsize);
2494                         memset(stainsamples, 255, stainmapsize);
2495                         // assign pointers
2496                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2497                         {
2498                                 if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2499                                         continue;
2500                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2501                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2502                                 surface->lightmapinfo->stainsamples = stainsamples;
2503                                 stainsamples += ssize * tsize * 3;
2504                         }
2505                 }
2506         }
2507
2508         // generate ushort elements array if possible
2509         if (loadmodel->surfmesh.data_element3s)
2510                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2511                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2512 }
2513
2514 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2515 {
2516         //if (node->parent)
2517         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2518         node->parent = parent;
2519         if (node->plane)
2520         {
2521                 // this is a node, recurse to children
2522                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2523                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2524                 // combine supercontents of children
2525                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2526         }
2527         else
2528         {
2529                 int j;
2530                 mleaf_t *leaf = (mleaf_t *)node;
2531                 // if this is a leaf, calculate supercontents mask from all collidable
2532                 // primitives in the leaf (brushes and collision surfaces)
2533                 // also flag if the leaf contains any collision surfaces
2534                 leaf->combinedsupercontents = 0;
2535                 // combine the supercontents values of all brushes in this leaf
2536                 for (j = 0;j < leaf->numleafbrushes;j++)
2537                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2538                 // check if this leaf contains any collision surfaces (q3 patches)
2539                 for (j = 0;j < leaf->numleafsurfaces;j++)
2540                 {
2541                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2542                         if (surface->num_collisiontriangles)
2543                         {
2544                                 leaf->containscollisionsurfaces = true;
2545                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2546                         }
2547                 }
2548         }
2549 }
2550
2551 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2552 {
2553         int                     i, j, count, p;
2554         dnode_t         *in;
2555         mnode_t         *out;
2556
2557         in = (dnode_t *)(mod_base + l->fileofs);
2558         if (l->filelen % sizeof(*in))
2559                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2560         count = l->filelen / sizeof(*in);
2561         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2562
2563         loadmodel->brush.data_nodes = out;
2564         loadmodel->brush.num_nodes = count;
2565
2566         for ( i=0 ; i<count ; i++, in++, out++)
2567         {
2568                 for (j=0 ; j<3 ; j++)
2569                 {
2570                         out->mins[j] = LittleShort(in->mins[j]);
2571                         out->maxs[j] = LittleShort(in->maxs[j]);
2572                 }
2573
2574                 p = LittleLong(in->planenum);
2575                 out->plane = loadmodel->brush.data_planes + p;
2576
2577                 out->firstsurface = (unsigned short)LittleShort(in->firstface);
2578                 out->numsurfaces = (unsigned short)LittleShort(in->numfaces);
2579
2580                 for (j=0 ; j<2 ; j++)
2581                 {
2582                         // LordHavoc: this code supports broken bsp files produced by
2583                         // arguire qbsp which can produce more than 32768 nodes, any value
2584                         // below count is assumed to be a node number, any other value is
2585                         // assumed to be a leaf number
2586                         p = (unsigned short)LittleShort(in->children[j]);
2587                         if (p < count)
2588                         {
2589                                 if (p < loadmodel->brush.num_nodes)
2590                                         out->children[j] = loadmodel->brush.data_nodes + p;
2591                                 else
2592                                 {
2593                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
2594                                         // map it to the solid leaf
2595                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2596                                 }
2597                         }
2598                         else
2599                         {
2600                                 // note this uses 65535 intentionally, -1 is leaf 0
2601                                 p = 65535 - p;
2602                                 if (p < loadmodel->brush.num_leafs)
2603                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
2604                                 else
2605                                 {
2606                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
2607                                         // map it to the solid leaf
2608                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2609                                 }
2610                         }
2611                 }
2612         }
2613
2614         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2615 }
2616
2617 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2618 {
2619         dleaf_t *in;
2620         mleaf_t *out;
2621         int i, j, count, p;
2622
2623         in = (dleaf_t *)(mod_base + l->fileofs);
2624         if (l->filelen % sizeof(*in))
2625                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2626         count = l->filelen / sizeof(*in);
2627         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2628
2629         loadmodel->brush.data_leafs = out;
2630         loadmodel->brush.num_leafs = count;
2631         // get visleafs from the submodel data
2632         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2633         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2634         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2635         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2636
2637         for ( i=0 ; i<count ; i++, in++, out++)
2638         {
2639                 for (j=0 ; j<3 ; j++)
2640                 {
2641                         out->mins[j] = LittleShort(in->mins[j]);
2642                         out->maxs[j] = LittleShort(in->maxs[j]);
2643                 }
2644
2645                 // FIXME: this function could really benefit from some error checking
2646
2647                 out->contents = LittleLong(in->contents);
2648
2649                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + (unsigned short)LittleShort(in->firstmarksurface);
2650                 out->numleafsurfaces = (unsigned short)LittleShort(in->nummarksurfaces);
2651                 if ((unsigned short)LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2652                 {
2653                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", (int)(out->firstleafsurface - loadmodel->brush.data_leafsurfaces), (int)(out->firstleafsurface + out->numleafsurfaces - loadmodel->brush.data_leafsurfaces), 0, loadmodel->brush.num_leafsurfaces);
2654                         out->firstleafsurface = NULL;
2655                         out->numleafsurfaces = 0;
2656                 }
2657
2658                 out->clusterindex = i - 1;
2659                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2660                         out->clusterindex = -1;
2661
2662                 p = LittleLong(in->visofs);
2663                 // ignore visofs errors on leaf 0 (solid)
2664                 if (p >= 0 && out->clusterindex >= 0)
2665                 {
2666                         if (p >= loadmodel->brushq1.num_compressedpvs)
2667                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2668                         else
2669                                 Mod_Q1BSP_DecompressVis(loadmodel->brushq1.data_compressedpvs + p, loadmodel->brushq1.data_compressedpvs + loadmodel->brushq1.num_compressedpvs, loadmodel->brush.data_pvsclusters + out->clusterindex * loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.data_pvsclusters + (out->clusterindex + 1) * loadmodel->brush.num_pvsclusterbytes);
2670                 }
2671
2672                 for (j = 0;j < 4;j++)
2673                         out->ambient_sound_level[j] = in->ambient_level[j];
2674
2675                 // FIXME: Insert caustics here
2676         }
2677 }
2678
2679 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2680 {
2681         int i, j;
2682         mleaf_t *leaf;
2683         const unsigned char *pvs;
2684         // if there's no vis data, assume supported (because everything is visible all the time)
2685         if (!loadmodel->brush.data_pvsclusters)
2686                 return true;
2687         // check all liquid leafs to see if they can see into empty leafs, if any
2688         // can we can assume this map supports r_wateralpha
2689         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2690         {
2691                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && leaf->clusterindex >= 0)
2692                 {
2693                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2694                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2695                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2696                                         return true;
2697                 }
2698         }
2699         return false;
2700 }
2701
2702 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2703 {
2704         dclipnode_t *in;
2705         mclipnode_t *out;
2706         int                     i, count;
2707         hull_t          *hull;
2708
2709         in = (dclipnode_t *)(mod_base + l->fileofs);
2710         if (l->filelen % sizeof(*in))
2711                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2712         count = l->filelen / sizeof(*in);
2713         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2714
2715         loadmodel->brushq1.clipnodes = out;
2716         loadmodel->brushq1.numclipnodes = count;
2717
2718         for (i = 1; i < MAX_MAP_HULLS; i++)
2719         {
2720                 hull = &loadmodel->brushq1.hulls[i];
2721                 hull->clipnodes = out;
2722                 hull->firstclipnode = 0;
2723                 hull->lastclipnode = count-1;
2724                 hull->planes = loadmodel->brush.data_planes;
2725                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2726                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2727                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2728                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2729                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2730                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2731                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2732         }
2733
2734         for (i=0 ; i<count ; i++, out++, in++)
2735         {
2736                 out->planenum = LittleLong(in->planenum);
2737                 // LordHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
2738                 out->children[0] = (unsigned short)LittleShort(in->children[0]);
2739                 out->children[1] = (unsigned short)LittleShort(in->children[1]);
2740                 if (out->children[0] >= count)
2741                         out->children[0] -= 65536;
2742                 if (out->children[1] >= count)
2743                         out->children[1] -= 65536;
2744                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2745                         Host_Error("Corrupt clipping hull(out of range planenum)");
2746         }
2747 }
2748
2749 //Duplicate the drawing hull structure as a clipping hull
2750 static void Mod_Q1BSP_MakeHull0(void)
2751 {
2752         mnode_t         *in;
2753         mclipnode_t *out;
2754         int                     i;
2755         hull_t          *hull;
2756
2757         hull = &loadmodel->brushq1.hulls[0];
2758
2759         in = loadmodel->brush.data_nodes;
2760         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(*out));
2761
2762         hull->clipnodes = out;
2763         hull->firstclipnode = 0;
2764         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2765         hull->planes = loadmodel->brush.data_planes;
2766
2767         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2768         {
2769                 out->planenum = in->plane - loadmodel->brush.data_planes;
2770                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2771                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2772         }
2773 }
2774
2775 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2776 {
2777         int i, j;
2778         short *in;
2779
2780         in = (short *)(mod_base + l->fileofs);
2781         if (l->filelen % sizeof(*in))
2782                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2783         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2784         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2785
2786         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2787         {
2788                 j = (unsigned short) LittleShort(in[i]);
2789                 if (j >= loadmodel->num_surfaces)
2790                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2791                 loadmodel->brush.data_leafsurfaces[i] = j;
2792         }
2793 }
2794
2795 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2796 {
2797         int             i;
2798         int             *in;
2799
2800         in = (int *)(mod_base + l->fileofs);
2801         if (l->filelen % sizeof(*in))
2802                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2803         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2804         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2805
2806         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2807                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2808 }
2809
2810
2811 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2812 {
2813         int                     i;
2814         mplane_t        *out;
2815         dplane_t        *in;
2816
2817         in = (dplane_t *)(mod_base + l->fileofs);
2818         if (l->filelen % sizeof(*in))
2819                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2820
2821         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2822         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2823
2824         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2825         {
2826                 out->normal[0] = LittleFloat(in->normal[0]);
2827                 out->normal[1] = LittleFloat(in->normal[1]);
2828                 out->normal[2] = LittleFloat(in->normal[2]);
2829                 out->dist = LittleFloat(in->dist);
2830
2831                 PlaneClassify(out);
2832         }
2833 }
2834
2835 static void Mod_Q1BSP_LoadMapBrushes(void)
2836 {
2837 #if 0
2838 // unfinished
2839         int submodel, numbrushes;
2840         qboolean firstbrush;
2841         char *text, *maptext;
2842         char mapfilename[MAX_QPATH];
2843         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2844         strlcat (mapfilename, ".map", sizeof (mapfilename));
2845         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2846         if (!maptext)
2847                 return;
2848         text = maptext;
2849         if (!COM_ParseToken_Simple(&data, false, false))
2850                 return; // error
2851         submodel = 0;
2852         for (;;)
2853         {
2854                 if (!COM_ParseToken_Simple(&data, false, false))
2855                         break;
2856                 if (com_token[0] != '{')
2857                         return; // error
2858                 // entity
2859                 firstbrush = true;
2860                 numbrushes = 0;
2861                 maxbrushes = 256;
2862                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2863                 for (;;)
2864                 {
2865                         if (!COM_ParseToken_Simple(&data, false, false))
2866                                 return; // error
2867                         if (com_token[0] == '}')
2868                                 break; // end of entity
2869                         if (com_token[0] == '{')
2870                         {
2871                                 // brush
2872                                 if (firstbrush)
2873                                 {
2874                                         if (submodel)
2875                                         {
2876                                                 if (submodel > loadmodel->brush.numsubmodels)
2877                                                 {
2878                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2879                                                         model = NULL;
2880                                                 }
2881                                                 else
2882                                                         model = loadmodel->brush.submodels[submodel];
2883                                         }
2884                                         else
2885                                                 model = loadmodel;
2886                                 }
2887                                 for (;;)
2888                                 {
2889                                         if (!COM_ParseToken_Simple(&data, false, false))
2890                                                 return; // error
2891                                         if (com_token[0] == '}')
2892                                                 break; // end of brush
2893                                         // each brush face should be this format:
2894                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2895                                         // FIXME: support hl .map format
2896                                         for (pointnum = 0;pointnum < 3;pointnum++)
2897                                         {
2898                                                 COM_ParseToken_Simple(&data, false, false);
2899                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2900                                                 {
2901                                                         COM_ParseToken_Simple(&data, false, false);
2902                                                         point[pointnum][componentnum] = atof(com_token);
2903                                                 }
2904                                                 COM_ParseToken_Simple(&data, false, false);
2905                                         }
2906                                         COM_ParseToken_Simple(&data, false, false);
2907                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2908                                         COM_ParseToken_Simple(&data, false, false);
2909                                         //scroll_s = atof(com_token);
2910                                         COM_ParseToken_Simple(&data, false, false);
2911                                         //scroll_t = atof(com_token);
2912                                         COM_ParseToken_Simple(&data, false, false);
2913                                         //rotate = atof(com_token);
2914                                         COM_ParseToken_Simple(&data, false, false);
2915                                         //scale_s = atof(com_token);
2916                                         COM_ParseToken_Simple(&data, false, false);
2917                                         //scale_t = atof(com_token);
2918                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2919                                         VectorNormalizeDouble(planenormal);
2920                                         planedist = DotProduct(point[0], planenormal);
2921                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2922                                 }
2923                                 continue;
2924                         }
2925                 }
2926         }
2927 #endif
2928 }
2929
2930
2931 #define MAX_PORTALPOINTS 64
2932
2933 typedef struct portal_s
2934 {
2935         mplane_t plane;
2936         mnode_t *nodes[2];              // [0] = front side of plane
2937         struct portal_s *next[2];
2938         int numpoints;
2939         double points[3*MAX_PORTALPOINTS];
2940         struct portal_s *chain; // all portals are linked into a list
2941 }
2942 portal_t;
2943
2944 static memexpandablearray_t portalarray;
2945
2946 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2947 {
2948         // process only nodes (leafs already had their box calculated)
2949         if (!node->plane)
2950                 return;
2951
2952         // calculate children first
2953         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2954         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2955
2956         // make combined bounding box from children
2957         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2958         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2959         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2960         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2961         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2962         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2963 }
2964
2965 static void Mod_Q1BSP_FinalizePortals(void)
2966 {
2967         int i, j, numportals, numpoints, portalindex, portalrange = Mem_ExpandableArray_IndexRange(&portalarray);
2968         portal_t *p;
2969         mportal_t *portal;
2970         mvertex_t *point;
2971         mleaf_t *leaf, *endleaf;
2972
2973         // tally up portal and point counts and recalculate bounding boxes for all
2974         // leafs (because qbsp is very sloppy)
2975         leaf = loadmodel->brush.data_leafs;
2976         endleaf = leaf + loadmodel->brush.num_leafs;
2977         if (mod_recalculatenodeboxes.integer)
2978         {
2979                 for (;leaf < endleaf;leaf++)
2980                 {
2981                         VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2982                         VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2983                 }
2984         }
2985         numportals = 0;
2986         numpoints = 0;
2987         for (portalindex = 0;portalindex < portalrange;portalindex++)
2988         {
2989                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
2990                 if (!p)
2991                         continue;
2992                 // note: this check must match the one below or it will usually corrupt memory
2993                 // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
2994                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2995                 {
2996                         numportals += 2;
2997                         numpoints += p->numpoints * 2;
2998                 }
2999         }
3000         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
3001         loadmodel->brush.num_portals = numportals;
3002         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
3003         loadmodel->brush.num_portalpoints = numpoints;
3004         // clear all leaf portal chains
3005         for (i = 0;i < loadmodel->brush.num_leafs;i++)
3006                 loadmodel->brush.data_leafs[i].portals = NULL;
3007         // process all portals in the global portal chain, while freeing them
3008         portal = loadmodel->brush.data_portals;
3009         point = loadmodel->brush.data_portalpoints;
3010         for (portalindex = 0;portalindex < portalrange;portalindex++)
3011         {
3012                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
3013                 if (!p)
3014                         continue;
3015                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
3016                 {
3017                         // note: this check must match the one above or it will usually corrupt memory
3018                         // the nodes[0] != nodes[1] check is because leaf 0 is the shared solid leaf, it can have many portals inside with leaf 0 on both sides
3019                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3020                         {
3021                                 // first make the back to front portal(forward portal)
3022                                 portal->points = point;
3023                                 portal->numpoints = p->numpoints;
3024                                 portal->plane.dist = p->plane.dist;
3025                                 VectorCopy(p->plane.normal, portal->plane.normal);
3026                                 portal->here = (mleaf_t *)p->nodes[1];
3027                                 portal->past = (mleaf_t *)p->nodes[0];
3028                                 // copy points
3029                                 for (j = 0;j < portal->numpoints;j++)
3030                                 {
3031                                         VectorCopy(p->points + j*3, point->position);
3032                                         point++;
3033                                 }
3034                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3035                                 PlaneClassify(&portal->plane);
3036
3037                                 // link into leaf's portal chain
3038                                 portal->next = portal->here->portals;
3039                                 portal->here->portals = portal;
3040
3041                                 // advance to next portal
3042                                 portal++;
3043
3044                                 // then make the front to back portal(backward portal)
3045                                 portal->points = point;
3046                                 portal->numpoints = p->numpoints;
3047                                 portal->plane.dist = -p->plane.dist;
3048                                 VectorNegate(p->plane.normal, portal->plane.normal);
3049                                 portal->here = (mleaf_t *)p->nodes[0];
3050                                 portal->past = (mleaf_t *)p->nodes[1];
3051                                 // copy points
3052                                 for (j = portal->numpoints - 1;j >= 0;j--)
3053                                 {
3054                                         VectorCopy(p->points + j*3, point->position);
3055                                         point++;
3056                                 }
3057                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3058                                 PlaneClassify(&portal->plane);
3059
3060                                 // link into leaf's portal chain
3061                                 portal->next = portal->here->portals;
3062                                 portal->here->portals = portal;
3063
3064                                 // advance to next portal
3065                                 portal++;
3066                         }
3067                         // add the portal's polygon points to the leaf bounding boxes
3068                         if (mod_recalculatenodeboxes.integer)
3069                         {
3070                                 for (i = 0;i < 2;i++)
3071                                 {
3072                                         leaf = (mleaf_t *)p->nodes[i];
3073                                         for (j = 0;j < p->numpoints;j++)
3074                                         {
3075                                                 if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
3076                                                 if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
3077                                                 if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
3078                                                 if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
3079                                                 if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
3080                                                 if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
3081                                         }
3082                                 }
3083                         }
3084                 }
3085         }
3086         // now recalculate the node bounding boxes from the leafs
3087         if (mod_recalculatenodeboxes.integer)
3088                 Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3089 }
3090
3091 /*
3092 =============
3093 AddPortalToNodes
3094 =============
3095 */
3096 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
3097 {
3098         if (!front)
3099                 Host_Error("AddPortalToNodes: NULL front node");
3100         if (!back)
3101                 Host_Error("AddPortalToNodes: NULL back node");
3102         if (p->nodes[0] || p->nodes[1])
3103                 Host_Error("AddPortalToNodes: already included");
3104         // note: front == back is handled gracefully, because leaf 0 is the shared solid leaf, it can often have portals with the same leaf on both sides
3105
3106         p->nodes[0] = front;
3107         p->next[0] = (portal_t *)front->portals;
3108         front->portals = (mportal_t *)p;
3109
3110         p->nodes[1] = back;
3111         p->next[1] = (portal_t *)back->portals;
3112         back->portals = (mportal_t *)p;
3113 }
3114
3115 /*
3116 =============
3117 RemovePortalFromNode
3118 =============
3119 */
3120 static void RemovePortalFromNodes(portal_t *portal)
3121 {
3122         int i;
3123         mnode_t *node;
3124         void **portalpointer;
3125         portal_t *t;
3126         for (i = 0;i < 2;i++)
3127         {
3128                 node = portal->nodes[i];
3129
3130                 portalpointer = (void **) &node->portals;
3131                 while (1)
3132                 {
3133                         t = (portal_t *)*portalpointer;
3134                         if (!t)
3135                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
3136
3137                         if (t == portal)
3138                         {
3139                                 if (portal->nodes[0] == node)
3140                                 {
3141                                         *portalpointer = portal->next[0];
3142                                         portal->nodes[0] = NULL;
3143                                 }
3144                                 else if (portal->nodes[1] == node)
3145                                 {
3146                                         *portalpointer = portal->next[1];
3147                                         portal->nodes[1] = NULL;
3148                                 }
3149                                 else
3150                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3151                                 break;
3152                         }
3153
3154                         if (t->nodes[0] == node)
3155                                 portalpointer = (void **) &t->next[0];
3156                         else if (t->nodes[1] == node)
3157                                 portalpointer = (void **) &t->next[1];
3158                         else
3159                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3160                 }
3161         }
3162 }
3163
3164 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
3165 static double *portalpointsbuffer;
3166 static int portalpointsbufferoffset;
3167 static int portalpointsbuffersize;
3168 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
3169 {
3170         int i, side;
3171         mnode_t *front, *back, *other_node;
3172         mplane_t clipplane, *plane;
3173         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
3174         int numfrontpoints, numbackpoints;
3175         double *frontpoints, *backpoints;
3176
3177         // if a leaf, we're done
3178         if (!node->plane)
3179                 return;
3180
3181         // get some space for our clipping operations to use
3182         if (portalpointsbuffersize < portalpointsbufferoffset + 6*MAX_PORTALPOINTS)
3183         {
3184                 portalpointsbuffersize = portalpointsbufferoffset * 2;
3185                 portalpointsbuffer = Mem_Realloc(loadmodel->mempool, portalpointsbuffer, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3186         }
3187         frontpoints = portalpointsbuffer + portalpointsbufferoffset;
3188         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3189         backpoints = portalpointsbuffer + portalpointsbufferoffset;
3190         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3191
3192         plane = node->plane;
3193
3194         front = node->children[0];
3195         back = node->children[1];
3196         if (front == back)
3197                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3198
3199         // create the new portal by generating a polygon for the node plane,
3200         // and clipping it by all of the other portals(which came from nodes above this one)
3201         nodeportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3202         nodeportal->plane = *plane;
3203
3204         // TODO: calculate node bounding boxes during recursion and calculate a maximum plane size accordingly to improve precision (as most maps do not need 1 billion unit plane polygons)
3205         PolygonD_QuadForPlane(nodeportal->points, nodeportal->plane.normal[0], nodeportal->plane.normal[1], nodeportal->plane.normal[2], nodeportal->plane.dist, 1024.0*1024.0*1024.0);
3206         nodeportal->numpoints = 4;
3207         side = 0;       // shut up compiler warning
3208         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3209         {
3210                 clipplane = portal->plane;
3211                 if (portal->nodes[0] == portal->nodes[1])
3212                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3213                 if (portal->nodes[0] == node)
3214                         side = 0;
3215                 else if (portal->nodes[1] == node)
3216                 {
3217                         clipplane.dist = -clipplane.dist;
3218                         VectorNegate(clipplane.normal, clipplane.normal);
3219                         side = 1;
3220                 }
3221                 else
3222                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3223
3224                 for (i = 0;i < nodeportal->numpoints*3;i++)
3225                         frontpoints[i] = nodeportal->points[i];
3226                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
3227                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3228                         break;
3229         }
3230
3231         if (nodeportal->numpoints < 3)
3232         {
3233                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3234                 nodeportal->numpoints = 0;
3235         }
3236         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3237         {
3238                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3239                 nodeportal->numpoints = 0;
3240         }
3241
3242         AddPortalToNodes(nodeportal, front, back);
3243
3244         // split the portals of this node along this node's plane and assign them to the children of this node
3245         // (migrating the portals downward through the tree)
3246         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3247         {
3248                 if (portal->nodes[0] == portal->nodes[1])
3249                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3250                 if (portal->nodes[0] == node)
3251                         side = 0;
3252                 else if (portal->nodes[1] == node)
3253                         side = 1;
3254                 else
3255                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3256                 nextportal = portal->next[side];
3257                 if (!portal->numpoints)
3258                         continue;
3259
3260                 other_node = portal->nodes[!side];
3261                 RemovePortalFromNodes(portal);
3262
3263                 // cut the portal into two portals, one on each side of the node plane
3264                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
3265
3266                 if (!numfrontpoints)
3267                 {
3268                         if (side == 0)
3269                                 AddPortalToNodes(portal, back, other_node);
3270                         else
3271                                 AddPortalToNodes(portal, other_node, back);
3272                         continue;
3273                 }
3274                 if (!numbackpoints)
3275                 {
3276                         if (side == 0)
3277                                 AddPortalToNodes(portal, front, other_node);
3278                         else
3279                                 AddPortalToNodes(portal, other_node, front);
3280                         continue;
3281                 }
3282
3283                 // the portal is split
3284                 splitportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3285                 temp = splitportal->chain;
3286                 *splitportal = *portal;
3287                 splitportal->chain = temp;
3288                 for (i = 0;i < numbackpoints*3;i++)
3289                         splitportal->points[i] = backpoints[i];
3290                 splitportal->numpoints = numbackpoints;
3291                 for (i = 0;i < numfrontpoints*3;i++)
3292                         portal->points[i] = frontpoints[i];
3293                 portal->numpoints = numfrontpoints;
3294
3295                 if (side == 0)
3296                 {
3297                         AddPortalToNodes(portal, front, other_node);
3298                         AddPortalToNodes(splitportal, back, other_node);
3299                 }
3300                 else
3301                 {
3302                         AddPortalToNodes(portal, other_node, front);
3303                         AddPortalToNodes(splitportal, other_node, back);
3304                 }
3305         }
3306
3307         Mod_Q1BSP_RecursiveNodePortals(front);
3308         Mod_Q1BSP_RecursiveNodePortals(back);
3309
3310         portalpointsbufferoffset -= 6*MAX_PORTALPOINTS;
3311 }
3312
3313 static void Mod_Q1BSP_MakePortals(void)
3314 {
3315         Mem_ExpandableArray_NewArray(&portalarray, loadmodel->mempool, sizeof(portal_t), 1020*1024/sizeof(portal_t));
3316         portalpointsbufferoffset = 0;
3317         portalpointsbuffersize = 6*MAX_PORTALPOINTS*128;
3318         portalpointsbuffer = Mem_Alloc(loadmodel->mempool, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3319         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3320         Mem_Free(portalpointsbuffer);
3321         portalpointsbuffer = NULL;
3322         portalpointsbufferoffset = 0;
3323         portalpointsbuffersize = 0;
3324         Mod_Q1BSP_FinalizePortals();
3325         Mem_ExpandableArray_FreeArray(&portalarray);
3326 }
3327
3328 //Returns PVS data for a given point
3329 //(note: can return NULL)
3330 static unsigned char *Mod_Q1BSP_GetPVS(dp_model_t *model, const vec3_t p)
3331 {
3332         mnode_t *node;
3333         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
3334         while (node->plane)
3335                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3336         if (((mleaf_t *)node)->clusterindex >= 0)
3337                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3338         else
3339                 return NULL;
3340 }
3341
3342 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3343 {
3344         while (node->plane)
3345         {
3346                 float d = PlaneDiff(org, node->plane);
3347                 if (d > radius)
3348                         node = node->children[0];
3349                 else if (d < -radius)
3350                         node = node->children[1];
3351                 else
3352                 {
3353                         // go down both sides
3354                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3355                         node = node->children[1];
3356                 }
3357         }
3358         // if this leaf is in a cluster, accumulate the pvs bits
3359         if (((mleaf_t *)node)->clusterindex >= 0)
3360         {
3361                 int i;
3362                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3363                 for (i = 0;i < pvsbytes;i++)
3364                         pvsbuffer[i] |= pvs[i];
3365         }
3366 }
3367
3368 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3369 //of the given point.
3370 static int Mod_Q1BSP_FatPVS(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength, qboolean merge)
3371 {
3372         int bytes = model->brush.num_pvsclusterbytes;
3373         bytes = min(bytes, pvsbufferlength);
3374         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3375         {
3376                 memset(pvsbuffer, 0xFF, bytes);
3377                 return bytes;
3378         }
3379         if (!merge)
3380                 memset(pvsbuffer, 0, bytes);
3381         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
3382         return bytes;
3383 }
3384
3385 static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3386 {
3387         vec3_t size;
3388         const hull_t *hull;
3389
3390         VectorSubtract(inmaxs, inmins, size);
3391         if (cmodel->brush.ishlbsp)
3392         {
3393                 if (size[0] < 3)
3394                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3395                 else if (size[0] <= 32)
3396                 {
3397                         if (size[2] < 54) // pick the nearest of 36 or 72
3398                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3399                         else
3400                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3401                 }
3402                 else
3403                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3404         }
3405         else
3406         {
3407                 if (size[0] < 3)
3408                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3409                 else if (size[0] <= 32)
3410                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3411                 else
3412                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3413         }
3414         VectorCopy(inmins, outmins);
3415         VectorAdd(inmins, hull->clip_size, outmaxs);
3416 }
3417
3418 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3419 {
3420         int i, j, k;
3421         dheader_t *header;
3422         dmodel_t *bm;
3423         float dist, modelyawradius, modelradius;
3424         msurface_t *surface;
3425         int numshadowmeshtriangles;
3426         hullinfo_t hullinfo;
3427         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
3428         model_brush_lightstyleinfo_t styleinfo[256];
3429         unsigned char *datapointer;
3430
3431         mod->modeldatatypestring = "Q1BSP";
3432
3433         mod->type = mod_brushq1;
3434
3435         header = (dheader_t *)buffer;
3436
3437         i = LittleLong(header->version);
3438         if (i != BSPVERSION && i != 30)
3439                 Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3440         mod->brush.ishlbsp = i == 30;
3441
3442 // fill in hull info
3443         VectorClear (hullinfo.hullsizes[0][0]);
3444         VectorClear (hullinfo.hullsizes[0][1]);
3445         if (mod->brush.ishlbsp)
3446         {
3447                 mod->modeldatatypestring = "HLBSP";
3448
3449                 hullinfo.filehulls = 4;
3450                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3451                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3452                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3453                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3454                 VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3455                 VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3456         }
3457         else
3458         {
3459                 hullinfo.filehulls = 4;
3460                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3461                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3462                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3463                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3464         }
3465
3466 // read lumps
3467         mod_base = (unsigned char*)buffer;
3468         for (i = 0; i < HEADER_LUMPS; i++)
3469         {
3470                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3471                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3472         }
3473
3474         mod->soundfromcenter = true;
3475         mod->TraceBox = Mod_Q1BSP_TraceBox;
3476         mod->TraceLine = Mod_Q1BSP_TraceLine;
3477         mod->TracePoint = Mod_Q1BSP_TracePoint;
3478         mod->PointSuperContents = Mod_Q1BSP_PointSuperContents;
3479         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3480         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3481         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3482         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3483         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3484         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3485         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3486         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3487         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3488         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3489         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3490         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3491         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3492         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3493         mod->Draw = R_Q1BSP_Draw;
3494         mod->DrawDepth = R_Q1BSP_DrawDepth;
3495         mod->DrawDebug = R_Q1BSP_DrawDebug;
3496         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
3497         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3498         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
3499         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
3500         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3501         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3502         mod->DrawLight = R_Q1BSP_DrawLight;
3503
3504 // load into heap
3505
3506         mod->brush.qw_md4sum = 0;
3507         mod->brush.qw_md4sum2 = 0;
3508         for (i = 0;i < HEADER_LUMPS;i++)
3509         {
3510                 int temp;
3511                 if (i == LUMP_ENTITIES)
3512                         continue;
3513                 temp = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3514                 mod->brush.qw_md4sum ^= LittleLong(temp);
3515                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3516                         continue;
3517                 temp = Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3518                 mod->brush.qw_md4sum2 ^= LittleLong(temp);
3519         }
3520
3521         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3522         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3523         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3524         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3525         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3526         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3527         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3528         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3529         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3530         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3531         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3532         // load submodels before leafs because they contain the number of vis leafs
3533         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3534         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3535         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3536         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3537
3538         // check if the map supports transparent water rendering
3539         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3540
3541         if (mod->brushq1.data_compressedpvs)
3542                 Mem_Free(mod->brushq1.data_compressedpvs);
3543         mod->brushq1.data_compressedpvs = NULL;
3544         mod->brushq1.num_compressedpvs = 0;
3545
3546         Mod_Q1BSP_MakeHull0();
3547         Mod_Q1BSP_MakePortals();
3548
3549         mod->numframes = 2;             // regular and alternate animation
3550         mod->numskins = 1;
3551
3552         // make a single combined shadow mesh to allow optimized shadow volume creation
3553         numshadowmeshtriangles = 0;
3554         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3555         {
3556                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3557                 numshadowmeshtriangles += surface->num_triangles;
3558         }
3559         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3560         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3561                 Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
3562         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3563         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3564
3565         if (loadmodel->brush.numsubmodels)
3566                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
3567
3568         // LordHavoc: to clear the fog around the original quake submodel code, I
3569         // will explain:
3570         // first of all, some background info on the submodels:
3571         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3572         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3573         // now the weird for loop itself:
3574         // the loop functions in an odd way, on each iteration it sets up the
3575         // current 'mod' model (which despite the confusing code IS the model of
3576         // the number i), at the end of the loop it duplicates the model to become
3577         // the next submodel, and loops back to set up the new submodel.
3578
3579         // LordHavoc: now the explanation of my sane way (which works identically):
3580         // set up the world model, then on each submodel copy from the world model
3581         // and set up the submodel with the respective model info.
3582         totalstylesurfaces = 0;
3583         totalstyles = 0;
3584         for (i = 0;i < mod->brush.numsubmodels;i++)
3585         {
3586                 memset(stylecounts, 0, sizeof(stylecounts));
3587                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
3588                 {
3589                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
3590                         for (j = 0;j < MAXLIGHTMAPS;j++)
3591                                 stylecounts[surface->lightmapinfo->styles[j]]++;
3592                 }
3593                 for (k = 0;k < 255;k++)
3594                 {
3595                         totalstyles++;
3596                         if (stylecounts[k])
3597                                 totalstylesurfaces += stylecounts[k];
3598                 }
3599         }
3600         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
3601         for (i = 0;i < mod->brush.numsubmodels;i++)
3602         {
3603                 // LordHavoc: this code was originally at the end of this loop, but
3604                 // has been transformed to something more readable at the start here.
3605
3606                 if (i > 0)
3607                 {
3608                         char name[10];
3609                         // duplicate the basic information
3610                         dpsnprintf(name, sizeof(name), "*%i", i);
3611                         mod = Mod_FindName(name, loadmodel->name);
3612                         // copy the base model to this one
3613                         *mod = *loadmodel;
3614                         // rename the clone back to its proper name
3615                         strlcpy(mod->name, name, sizeof(mod->name));
3616                         mod->brush.parentmodel = loadmodel;
3617                         // textures and memory belong to the main model
3618                         mod->texturepool = NULL;
3619                         mod->mempool = NULL;
3620                         mod->brush.GetPVS = NULL;
3621                         mod->brush.FatPVS = NULL;
3622                         mod->brush.BoxTouchingPVS = NULL;
3623                         mod->brush.BoxTouchingLeafPVS = NULL;
3624                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3625                         mod->brush.FindBoxClusters = NULL;
3626                         mod->brush.LightPoint = NULL;
3627                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3628                 }
3629
3630                 mod->brush.submodel = i;
3631
3632                 if (loadmodel->brush.submodels)
3633                         loadmodel->brush.submodels[i] = mod;
3634
3635                 bm = &mod->brushq1.submodels[i];
3636
3637                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3638                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3639                 {
3640                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3641                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3642                 }
3643
3644                 mod->firstmodelsurface = bm->firstface;
3645                 mod->nummodelsurfaces = bm->numfaces;
3646
3647                 // set node/leaf parents for this submodel
3648                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(mod->brush.data_nodes + mod->brushq1.hulls[0].firstclipnode, NULL);
3649
3650                 // make the model surface list (used by shadowing/lighting)
3651                 mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
3652                 Mod_MakeSortedSurfaces(mod);
3653
3654                 // copy the submodel bounds, then enlarge the yaw and rotated bounds according to radius
3655                 // (previously this code measured the radius of the vertices of surfaces in the submodel, but that broke submodels that contain only CLIP brushes, which do not produce surfaces)
3656                 VectorCopy(bm->mins, mod->normalmins);
3657                 VectorCopy(bm->maxs, mod->normalmaxs);
3658                 dist = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
3659                 modelyawradius = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
3660                 modelyawradius = dist*dist+modelyawradius*modelyawradius;
3661                 modelradius = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
3662                 modelradius = modelyawradius + modelradius * modelradius;
3663                 modelyawradius = sqrt(modelyawradius);
3664                 modelradius = sqrt(modelradius);
3665                 mod->yawmins[0] = mod->yawmins[1] = -modelyawradius;
3666                 mod->yawmins[2] = mod->normalmins[2];
3667                 mod->yawmaxs[0] = mod->yawmaxs[1] =  modelyawradius;
3668                 mod->yawmaxs[2] = mod->normalmaxs[2];
3669                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3670                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] =  modelradius;
3671                 mod->radius = modelradius;
3672                 mod->radius2 = modelradius * modelradius;
3673
3674                 // this gets altered below if sky or water is used
3675                 mod->DrawSky = NULL;
3676                 mod->DrawAddWaterPlanes = NULL;
3677
3678                 // scan surfaces for sky and water and flag the submodel as possessing these features or not
3679                 // build lightstyle lists for quick marking of dirty lightmaps when lightstyles flicker
3680                 if (mod->nummodelsurfaces)
3681                 {
3682                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3683                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3684                                         break;
3685                         if (j < mod->nummodelsurfaces)
3686                                 mod->DrawSky = R_Q1BSP_DrawSky;
3687
3688                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3689                                 if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
3690                                         break;
3691                         if (j < mod->nummodelsurfaces)
3692                                 mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
3693
3694                         // build lightstyle update chains
3695                         // (used to rapidly mark lightmapupdateflags on many surfaces
3696                         // when d_lightstylevalue changes)
3697                         memset(stylecounts, 0, sizeof(stylecounts));
3698                         for (k = 0;k < mod->nummodelsurfaces;k++)
3699                         {
3700                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3701                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3702                                         stylecounts[surface->lightmapinfo->styles[j]]++;
3703                         }
3704                         mod->brushq1.num_lightstyles = 0;
3705                         for (k = 0;k < 255;k++)
3706                         {
3707                                 if (stylecounts[k])
3708                                 {
3709                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
3710                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
3711                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
3712                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
3713                                         remapstyles[k] = mod->brushq1.num_lightstyles;
3714                                         mod->brushq1.num_lightstyles++;
3715                                 }
3716                         }
3717                         for (k = 0;k < mod->nummodelsurfaces;k++)
3718                         {
3719                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3720                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3721                                 {
3722                                         if (surface->lightmapinfo->styles[j] != 255)
3723                                         {
3724                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
3725                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
3726                                         }
3727                                 }
3728                         }
3729                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
3730                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
3731                 }
3732                 else
3733                 {
3734                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3735                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3736                 }
3737                 //mod->brushq1.num_visleafs = bm->visleafs;
3738
3739                 if (mod_q1bsp_polygoncollisions.integer)
3740                 {
3741                         Mod_MakeCollisionBIH(mod, true);
3742                         // point traces and contents checks still use the bsp tree
3743                         mod->TraceLine = Mod_CollisionBIH_TraceLine;
3744                         mod->TraceBox = Mod_CollisionBIH_TraceBox;
3745                 }
3746
3747                 // generate VBOs and other shared data before cloning submodels
3748                 if (i == 0)
3749                 {
3750                         Mod_BuildVBOs();
3751                         Mod_Q1BSP_LoadMapBrushes();
3752                         //Mod_Q1BSP_ProcessLightList();
3753                 }
3754         }
3755
3756         Con_DPrintf("Stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
3757 }
3758
3759 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3760 {
3761 }
3762
3763 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3764 {
3765 /*
3766         d_t *in;
3767         m_t *out;
3768         int i, count;
3769
3770         in = (void *)(mod_base + l->fileofs);
3771         if (l->filelen % sizeof(*in))
3772                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3773         count = l->filelen / sizeof(*in);
3774         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3775
3776         loadmodel-> = out;
3777         loadmodel->num = count;
3778
3779         for (i = 0;i < count;i++, in++, out++)
3780         {
3781         }
3782 */
3783 }
3784
3785 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3786 {
3787 /*
3788         d_t *in;
3789         m_t *out;
3790         int i, count;
3791
3792         in = (void *)(mod_base + l->fileofs);
3793         if (l->filelen % sizeof(*in))
3794                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3795         count = l->filelen / sizeof(*in);
3796         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3797
3798         loadmodel-> = out;
3799         loadmodel->num = count;
3800
3801         for (i = 0;i < count;i++, in++, out++)
3802         {
3803         }
3804 */
3805 }
3806
3807 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3808 {
3809 /*
3810         d_t *in;
3811         m_t *out;
3812         int i, count;
3813
3814         in = (void *)(mod_base + l->fileofs);
3815         if (l->filelen % sizeof(*in))
3816                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3817         count = l->filelen / sizeof(*in);
3818         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3819
3820         loadmodel-> = out;
3821         loadmodel->num = count;
3822
3823         for (i = 0;i < count;i++, in++, out++)
3824         {
3825         }
3826 */
3827 }
3828
3829 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3830 {
3831 /*
3832         d_t *in;
3833         m_t *out;
3834         int i, count;
3835
3836         in = (void *)(mod_base + l->fileofs);
3837         if (l->filelen % sizeof(*in))
3838                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3839         count = l->filelen / sizeof(*in);
3840         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3841
3842         loadmodel-> = out;
3843         loadmodel->num = count;
3844
3845         for (i = 0;i < count;i++, in++, out++)
3846         {
3847         }
3848 */
3849 }
3850
3851 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3852 {
3853 /*
3854         d_t *in;
3855         m_t *out;
3856         int i, count;
3857
3858         in = (void *)(mod_base + l->fileofs);
3859         if (l->filelen % sizeof(*in))
3860                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3861         count = l->filelen / sizeof(*in);
3862         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3863
3864         loadmodel-> = out;
3865         loadmodel->num = count;
3866
3867         for (i = 0;i < count;i++, in++, out++)
3868         {
3869         }
3870 */
3871 }
3872
3873 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3874 {
3875 /*
3876         d_t *in;
3877         m_t *out;
3878         int i, count;
3879
3880         in = (void *)(mod_base + l->fileofs);
3881         if (l->filelen % sizeof(*in))
3882                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3883         count = l->filelen / sizeof(*in);
3884         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3885
3886         loadmodel-> = out;
3887         loadmodel->num = count;
3888
3889         for (i = 0;i < count;i++, in++, out++)
3890         {
3891         }
3892 */
3893 }
3894
3895 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3896 {
3897 /*
3898         d_t *in;
3899         m_t *out;
3900         int i, count;
3901
3902         in = (void *)(mod_base + l->fileofs);
3903         if (l->filelen % sizeof(*in))
3904                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3905         count = l->filelen / sizeof(*in);
3906         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3907
3908         loadmodel-> = out;
3909         loadmodel->num = count;
3910
3911         for (i = 0;i < count;i++, in++, out++)
3912         {
3913         }
3914 */
3915 }
3916
3917 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3918 {
3919 /*
3920         d_t *in;
3921         m_t *out;
3922         int i, count;
3923
3924         in = (void *)(mod_base + l->fileofs);
3925         if (l->filelen % sizeof(*in))
3926                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3927         count = l->filelen / sizeof(*in);
3928         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3929
3930         loadmodel-> = out;
3931         loadmodel->num = count;
3932
3933         for (i = 0;i < count;i++, in++, out++)
3934         {
3935         }
3936 */
3937 }
3938
3939 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3940 {
3941 /*
3942         d_t *in;
3943         m_t *out;
3944         int i, count;
3945
3946         in = (void *)(mod_base + l->fileofs);
3947         if (l->filelen % sizeof(*in))
3948                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3949         count = l->filelen / sizeof(*in);
3950         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3951
3952         loadmodel-> = out;
3953         loadmodel->num = count;
3954
3955         for (i = 0;i < count;i++, in++, out++)
3956         {
3957         }
3958 */
3959 }
3960
3961 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3962 {
3963 /*
3964         d_t *in;
3965         m_t *out;
3966         int i, count;
3967
3968         in = (void *)(mod_base + l->fileofs);
3969         if (l->filelen % sizeof(*in))
3970                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3971         count = l->filelen / sizeof(*in);
3972         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3973
3974         loadmodel-> = out;
3975         loadmodel->num = count;
3976
3977         for (i = 0;i < count;i++, in++, out++)
3978         {
3979         }
3980 */
3981 }
3982
3983 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3984 {
3985 /*
3986         d_t *in;
3987         m_t *out;
3988         int i, count;
3989
3990         in = (void *)(mod_base + l->fileofs);
3991         if (l->filelen % sizeof(*in))
3992                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3993         count = l->filelen / sizeof(*in);
3994         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3995
3996         loadmodel-> = out;
3997         loadmodel->num = count;
3998
3999         for (i = 0;i < count;i++, in++, out++)
4000         {
4001         }
4002 */
4003 }
4004
4005 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
4006 {
4007 /*
4008         d_t *in;
4009         m_t *out;
4010         int i, count;
4011
4012         in = (void *)(mod_base + l->fileofs);
4013         if (l->filelen % sizeof(*in))
4014                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
4015         count = l->filelen / sizeof(*in);
4016         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4017
4018         loadmodel-> = out;
4019         loadmodel->num = count;
4020
4021         for (i = 0;i < count;i++, in++, out++)
4022         {
4023         }
4024 */
4025 }
4026
4027 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
4028 {
4029 /*
4030         d_t *in;
4031         m_t *out;
4032         int i, count;
4033
4034         in = (void *)(mod_base + l->fileofs);
4035         if (l->filelen % sizeof(*in))
4036                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4037         count = l->filelen / sizeof(*in);
4038         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4039
4040         loadmodel-> = out;
4041         loadmodel->num = count;
4042
4043         for (i = 0;i < count;i++, in++, out++)
4044         {
4045         }
4046 */
4047 }
4048
4049 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
4050 {
4051 /*
4052         d_t *in;
4053         m_t *out;
4054         int i, count;
4055
4056         in = (void *)(mod_base + l->fileofs);
4057         if (l->filelen % sizeof(*in))
4058                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4059         count = l->filelen / sizeof(*in);
4060         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4061
4062         loadmodel-> = out;
4063         loadmodel->num = count;
4064
4065         for (i = 0;i < count;i++, in++, out++)
4066         {
4067         }
4068 */
4069 }
4070
4071 static void Mod_Q2BSP_LoadAreas(lump_t *l)
4072 {
4073 /*
4074         d_t *in;
4075         m_t *out;
4076         int i, count;
4077
4078         in = (void *)(mod_base + l->fileofs);
4079         if (l->filelen % sizeof(*in))
4080                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
4081         count = l->filelen / sizeof(*in);
4082         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4083
4084         loadmodel-> = out;
4085         loadmodel->num = count;
4086
4087         for (i = 0;i < count;i++, in++, out++)
4088         {
4089         }
4090 */
4091 }
4092
4093 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
4094 {
4095 /*
4096         d_t *in;
4097         m_t *out;
4098         int i, count;
4099
4100         in = (void *)(mod_base + l->fileofs);
4101         if (l->filelen % sizeof(*in))
4102                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
4103         count = l->filelen / sizeof(*in);
4104         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4105
4106         loadmodel-> = out;
4107         loadmodel->num = count;
4108
4109         for (i = 0;i < count;i++, in++, out++)
4110         {
4111         }
4112 */
4113 }
4114
4115 static void Mod_Q2BSP_LoadModels(lump_t *l)
4116 {
4117 /*
4118         d_t *in;
4119         m_t *out;
4120         int i, count;
4121
4122         in = (void *)(mod_base + l->fileofs);
4123         if (l->filelen % sizeof(*in))
4124                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
4125         count = l->filelen / sizeof(*in);
4126         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4127
4128         loadmodel-> = out;
4129         loadmodel->num = count;
4130
4131         for (i = 0;i < count;i++, in++, out++)
4132         {
4133         }
4134 */
4135 }
4136
4137 void static Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
4138 {
4139         int i;
4140         q2dheader_t *header;
4141
4142         Host_Error("Mod_Q2BSP_Load: not yet implemented");
4143
4144         mod->modeldatatypestring = "Q2BSP";
4145
4146         mod->type = mod_brushq2;
4147
4148         header = (q2dheader_t *)buffer;
4149
4150         i = LittleLong(header->version);
4151         if (i != Q2BSPVERSION)
4152                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4153
4154         mod_base = (unsigned char *)header;
4155
4156         // swap all the lumps
4157         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4158                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4159
4160         mod->brush.qw_md4sum = 0;
4161         mod->brush.qw_md4sum2 = 0;
4162         for (i = 0;i < Q2HEADER_LUMPS;i++)
4163         {
4164                 if (i == Q2LUMP_ENTITIES)
4165                         continue;
4166                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4167                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4168                         continue;
4169                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4170         }
4171
4172         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4173         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4174         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4175         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4176         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4177         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4178         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4179         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4180         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4181         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4182         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4183         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4184         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4185         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4186         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4187         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4188         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4189         // LordHavoc: must go last because this makes the submodels
4190         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4191 }
4192
4193 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents);
4194 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents);
4195
4196 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4197 {
4198         const char *data;
4199         char key[128], value[MAX_INPUTLINE];
4200         float v[3];
4201         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4202         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4203         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4204         if (!l->filelen)
4205                 return;
4206         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
4207         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4208         loadmodel->brush.entities[l->filelen] = 0;
4209         data = loadmodel->brush.entities;
4210         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4211         // VorteX: q3map2 FS-R generates tangentspace deluxemaps for q3bsp and sets 'deluxeMaps' key
4212         loadmodel->brushq3.deluxemapping = false;
4213         if (data && COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{')
4214         {
4215                 while (1)
4216                 {
4217                         if (!COM_ParseToken_Simple(&data, false, false))
4218                                 break; // error
4219                         if (com_token[0] == '}')
4220                                 break; // end of worldspawn
4221                         if (com_token[0] == '_')
4222                                 strlcpy(key, com_token + 1, sizeof(key));
4223                         else
4224                                 strlcpy(key, com_token, sizeof(key));
4225                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4226                                 key[strlen(key)-1] = 0;
4227                         if (!COM_ParseToken_Simple(&data, false, false))
4228                                 break; // error
4229                         strlcpy(value, com_token, sizeof(value));
4230                         if (!strcasecmp("gridsize", key)) // this one is case insensitive to 100% match q3map2
4231                         {
4232 #if _MSC_VER >= 1400
4233 #define sscanf sscanf_s
4234 #endif
4235 #if 0
4236                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4237                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4238 #else
4239                                 VectorSet(v, 64, 64, 128);
4240                                 if(sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) != 3)
4241                                         Con_Printf("Mod_Q3BSP_LoadEntities: funny gridsize \"%s\" in %s, interpreting as \"%f %f %f\" to match q3map2's parsing\n", value, loadmodel->name, v[0], v[1], v[2]);
4242                                 if (v[0] != 0 && v[1] != 0 && v[2] != 0)
4243                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4244 #endif
4245                         }
4246                         else if (!strcmp("deluxeMaps", key))
4247                         {
4248                                 if (!strcmp(com_token, "1"))
4249                                 {
4250                                         loadmodel->brushq3.deluxemapping = true;
4251                                         loadmodel->brushq3.deluxemapping_modelspace = true;
4252                                 }
4253                                 else if (!strcmp(com_token, "2"))
4254                                 {
4255                                         loadmodel->brushq3.deluxemapping = true;
4256                                         loadmodel->brushq3.deluxemapping_modelspace = false;
4257                                 }
4258                         }
4259                 }
4260         }
4261 }
4262
4263 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4264 {
4265         q3dtexture_t *in;
4266         texture_t *out;
4267         int i, count;
4268
4269         in = (q3dtexture_t *)(mod_base + l->fileofs);
4270         if (l->filelen % sizeof(*in))
4271                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4272         count = l->filelen / sizeof(*in);
4273         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4274
4275         loadmodel->data_textures = out;
4276         loadmodel->num_textures = count;
4277         loadmodel->num_texturesperskin = loadmodel->num_textures;
4278
4279         for (i = 0;i < count;i++)
4280         {
4281                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4282                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4283                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4284                 if (cls.state != ca_dedicated)
4285                 {
4286                         Mod_LoadTextureFromQ3Shader(out + i, out[i].name, true, true, TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
4287                         // restore the surfaceflags and supercontents
4288                         out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4289                         out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4290                 }
4291         }
4292 }
4293
4294 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4295 {
4296         q3dplane_t *in;
4297         mplane_t *out;
4298         int i, count;
4299
4300         in = (q3dplane_t *)(mod_base + l->fileofs);
4301         if (l->filelen % sizeof(*in))
4302                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4303         count = l->filelen / sizeof(*in);
4304         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4305
4306         loadmodel->brush.data_planes = out;
4307         loadmodel->brush.num_planes = count;
4308
4309         for (i = 0;i < count;i++, in++, out++)
4310         {
4311                 out->normal[0] = LittleFloat(in->normal[0]);
4312                 out->normal[1] = LittleFloat(in->normal[1]);
4313                 out->normal[2] = LittleFloat(in->normal[2]);
4314                 out->dist = LittleFloat(in->dist);
4315                 PlaneClassify(out);
4316         }
4317 }
4318
4319 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4320 {
4321         q3dbrushside_t *in;
4322         q3mbrushside_t *out;
4323         int i, n, count;
4324
4325         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4326         if (l->filelen % sizeof(*in))
4327                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4328         count = l->filelen / sizeof(*in);
4329         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4330
4331         loadmodel->brush.data_brushsides = out;
4332         loadmodel->brush.num_brushsides = count;
4333
4334         for (i = 0;i < count;i++, in++, out++)
4335         {
4336                 n = LittleLong(in->planeindex);
4337                 if (n < 0 || n >= loadmodel->brush.num_planes)
4338                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4339                 out->plane = loadmodel->brush.data_planes + n;
4340                 n = LittleLong(in->textureindex);
4341                 if (n < 0 || n >= loadmodel->num_textures)
4342                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4343                 out->texture = loadmodel->data_textures + n;
4344         }
4345 }
4346
4347 static void Mod_Q3BSP_LoadBrushSides_IG(lump_t *l)
4348 {
4349         q3dbrushside_ig_t *in;
4350         q3mbrushside_t *out;
4351         int i, n, count;
4352
4353         in = (q3dbrushside_ig_t *)(mod_base + l->fileofs);
4354         if (l->filelen % sizeof(*in))
4355                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4356         count = l->filelen / sizeof(*in);
4357         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4358
4359         loadmodel->brush.data_brushsides = out;
4360         loadmodel->brush.num_brushsides = count;
4361
4362         for (i = 0;i < count;i++, in++, out++)
4363         {
4364                 n = LittleLong(in->planeindex);
4365                 if (n < 0 || n >= loadmodel->brush.num_planes)
4366                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4367                 out->plane = loadmodel->brush.data_planes + n;
4368                 n = LittleLong(in->textureindex);
4369                 if (n < 0 || n >= loadmodel->num_textures)
4370                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4371                 out->texture = loadmodel->data_textures + n;
4372         }
4373 }
4374
4375 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4376 {
4377         q3dbrush_t *in;
4378         q3mbrush_t *out;
4379         int i, j, n, c, count, maxplanes, q3surfaceflags;
4380         colplanef_t *planes;
4381
4382         in = (q3dbrush_t *)(mod_base + l->fileofs);
4383         if (l->filelen % sizeof(*in))
4384                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4385         count = l->filelen / sizeof(*in);
4386         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4387
4388         loadmodel->brush.data_brushes = out;
4389         loadmodel->brush.num_brushes = count;
4390
4391         maxplanes = 0;
4392         planes = NULL;
4393
4394         for (i = 0;i < count;i++, in++, out++)
4395         {
4396                 n = LittleLong(in->firstbrushside);
4397                 c = LittleLong(in->numbrushsides);
4398                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4399                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4400                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4401                 out->numbrushsides = c;
4402                 n = LittleLong(in->textureindex);
4403                 if (n < 0 || n >= loadmodel->num_textures)
4404                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4405                 out->texture = loadmodel->data_textures + n;
4406
4407                 // make a list of mplane_t structs to construct a colbrush from
4408                 if (maxplanes < out->numbrushsides)
4409                 {
4410                         maxplanes = out->numbrushsides;
4411                         if (planes)
4412                                 Mem_Free(planes);
4413                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4414                 }
4415                 q3surfaceflags = 0;
4416                 for (j = 0;j < out->numbrushsides;j++)
4417                 {
4418                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4419                         planes[j].dist = out->firstbrushside[j].plane->dist;
4420                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4421                         planes[j].texture = out->firstbrushside[j].texture;
4422                         q3surfaceflags |= planes[j].q3surfaceflags;
4423                 }
4424                 // make the colbrush from the planes
4425                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
4426
4427                 // this whole loop can take a while (e.g. on redstarrepublic4)
4428                 CL_KeepaliveMessage(false);
4429         }
4430         if (planes)
4431                 Mem_Free(planes);
4432 }
4433
4434 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4435 {
4436         q3deffect_t *in;
4437         q3deffect_t *out;
4438         int i, n, count;
4439
4440         in = (q3deffect_t *)(mod_base + l->fileofs);
4441         if (l->filelen % sizeof(*in))
4442                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4443         count = l->filelen / sizeof(*in);
4444         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4445
4446         loadmodel->brushq3.data_effects = out;
4447         loadmodel->brushq3.num_effects = count;
4448
4449         for (i = 0;i < count;i++, in++, out++)
4450         {
4451                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4452                 n = LittleLong(in->brushindex);
4453                 if (n >= loadmodel->brush.num_brushes)
4454                 {
4455                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4456                         n = -1;
4457                 }
4458                 out->brushindex = n;
4459                 out->unknown = LittleLong(in->unknown);
4460         }
4461 }
4462
4463 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4464 {
4465         q3dvertex_t *in;
4466         int i, count;
4467
4468         in = (q3dvertex_t *)(mod_base + l->fileofs);
4469         if (l->filelen % sizeof(*in))
4470                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4471         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4472         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4473         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4474         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4475         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4476         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4477
4478         for (i = 0;i < count;i++, in++)
4479         {
4480                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4481                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4482                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4483                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4484                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4485                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4486                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4487                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4488                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4489                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4490                 // svector/tvector are calculated later in face loading
4491                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4492                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4493                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4494                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4495         }
4496 }
4497
4498 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4499 {
4500         int *in;
4501         int *out;
4502         int i, count;
4503
4504         in = (int *)(mod_base + l->fileofs);
4505         if (l->filelen % sizeof(int[3]))
4506                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4507         count = l->filelen / sizeof(*in);
4508
4509         if(!loadmodel->brushq3.num_vertices)
4510         {
4511                 if (count)
4512                         Con_Printf("Mod_Q3BSP_LoadTriangles: %s has triangles but no vertexes, broken compiler, ignoring problem\n", loadmodel->name);
4513                 loadmodel->brushq3.num_triangles = 0;
4514                 return;
4515         }
4516
4517         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4518         loadmodel->brushq3.num_triangles = count / 3;
4519         loadmodel->brushq3.data_element3i = out;
4520
4521         for (i = 0;i < count;i++, in++, out++)
4522         {
4523                 *out = LittleLong(*in);
4524                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4525                 {
4526                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4527                         *out = 0;
4528                 }
4529         }
4530 }
4531
4532 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4533 {
4534         q3dlightmap_t *input_pointer;
4535         int i, j, k, count, power, power2, endlightmap, mergewidth, mergeheight;
4536         unsigned char *c;
4537
4538         unsigned char *convertedpixels;
4539         char mapname[MAX_QPATH];
4540         int size, bytesperpixel, rgbmap[3];
4541         qboolean external;
4542         unsigned char *inpixels[10000]; // max count q3map2 can output (it uses 4 digits)
4543
4544         // defaults for q3bsp
4545         size = 128;
4546         bytesperpixel = 3;
4547         rgbmap[0] = 2;
4548         rgbmap[1] = 1;
4549         rgbmap[2] = 0;
4550         external = false;
4551         loadmodel->brushq3.lightmapsize = 128;
4552
4553         if (cls.state == ca_dedicated)
4554                 return;
4555
4556         if(mod_q3bsp_nolightmaps.integer)
4557         {
4558                 return;
4559         }
4560         else if(l->filelen)
4561         {
4562                 // prefer internal LMs for compatibility (a BSP contains no info on whether external LMs exist)
4563                 if (developer_loading.integer)
4564                         Con_Printf("Using internal lightmaps\n");
4565                 input_pointer = (q3dlightmap_t *)(mod_base + l->fileofs);
4566                 if (l->filelen % sizeof(*input_pointer))
4567                         Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4568                 count = l->filelen / sizeof(*input_pointer);
4569                 for(i = 0; i < count; ++i)
4570                         inpixels[i] = input_pointer[i].rgb;
4571         }
4572         else
4573         {
4574                 // no internal lightmaps
4575                 // try external lightmaps
4576                 if (developer_loading.integer)
4577                         Con_Printf("Using external lightmaps\n");
4578                 FS_StripExtension(loadmodel->name, mapname, sizeof(mapname));
4579                 inpixels[0] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, 0), false, false, false);
4580                 if(!inpixels[0])
4581                         return;
4582
4583                 // using EXTERNAL lightmaps instead
4584                 if(image_width != (int) CeilPowerOf2(image_width) || image_width != image_height)
4585                 {
4586                         Mem_Free(inpixels[0]);
4587                         Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
4588                 }
4589
4590                 size = image_width;
4591                 bytesperpixel = 4;
4592                 rgbmap[0] = 0;
4593                 rgbmap[1] = 1;
4594                 rgbmap[2] = 2;
4595                 external = true;
4596
4597                 for(count = 1; ; ++count)
4598                 {
4599                         inpixels[count] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, count), false, false, false);
4600                         if(!inpixels[count])
4601                                 break; // we got all of them
4602                         if(image_width != size || image_height != size)
4603                         {
4604                                 Mem_Free(inpixels[count]);
4605                                 inpixels[count] = NULL;
4606                                 Con_Printf("Mod_Q3BSP_LoadLightmaps: mismatched lightmap size in %s - external lightmap %s/lm_%04d does not match earlier ones\n", loadmodel->name, mapname, count);
4607                                 break;
4608                         }
4609                 }
4610         }
4611
4612         convertedpixels = (unsigned char *) Mem_Alloc(tempmempool, size*size*4);
4613         loadmodel->brushq3.lightmapsize = size;
4614         loadmodel->brushq3.num_originallightmaps = count;
4615
4616         // now check the surfaces to see if any of them index an odd numbered
4617         // lightmap, if so this is not a deluxemapped bsp file
4618         //
4619         // also check what lightmaps are actually used, because q3map2 sometimes
4620         // (always?) makes an unused one at the end, which
4621         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4622         // reason when only one lightmap is used, which can throw off the
4623         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4624         // to see if the second lightmap is blank, if so it is not deluxemapped.
4625         // VorteX: autodetect only if previous attempt to find "deluxeMaps" key
4626         // in Mod_Q3BSP_LoadEntities was failed
4627         if (!loadmodel->brushq3.deluxemapping)
4628         {
4629                 loadmodel->brushq3.deluxemapping = !(count & 1);
4630                 loadmodel->brushq3.deluxemapping_modelspace = true;
4631                 endlightmap = 0;
4632                 if (loadmodel->brushq3.deluxemapping)
4633                 {
4634                         int facecount = faceslump->filelen / sizeof(q3dface_t);
4635                         q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4636                         for (i = 0;i < facecount;i++)
4637                         {
4638                                 j = LittleLong(faces[i].lightmapindex);
4639                                 if (j >= 0)
4640                                 {
4641                                         endlightmap = max(endlightmap, j + 1);
4642                                         if ((j & 1) || j + 1 >= count)
4643                                         {
4644                                                 loadmodel->brushq3.deluxemapping = false;
4645                                                 break;
4646                                         }
4647                                 }
4648                         }
4649                 }
4650
4651                 // q3map2 sometimes (or always?) makes a second blank lightmap for no
4652                 // reason when only one lightmap is used, which can throw off the
4653                 // deluxemapping detection method, so check 2-lightmap bsp's specifically
4654                 // to see if the second lightmap is blank, if so it is not deluxemapped.
4655                 //
4656                 // further research has shown q3map2 sometimes creates a deluxemap and two
4657                 // blank lightmaps, which must be handled properly as well
4658                 if (endlightmap == 1 && count > 1)
4659                 {
4660                         c = inpixels[1];
4661                         for (i = 0;i < size*size;i++)
4662                         {
4663                                 if (c[bytesperpixel*i + rgbmap[0]])
4664                                         break;
4665                                 if (c[bytesperpixel*i + rgbmap[1]])
4666                                         break;
4667                                 if (c[bytesperpixel*i + rgbmap[2]])
4668                                         break;
4669                         }
4670                         if (i == size*size)
4671                         {
4672                                 // all pixels in the unused lightmap were black...
4673                                 loadmodel->brushq3.deluxemapping = false;
4674                         }
4675                 }
4676         }
4677
4678         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4679
4680         // figure out what the most reasonable merge power is within limits
4681
4682         loadmodel->brushq3.num_lightmapmergepower = 0;
4683
4684         for(i = 0; (128 << i) < size; ++i)
4685                 ;
4686         // i is now 0 for 128, 1 for 256, etc
4687
4688         for (power = 1;power + i <= mod_q3bsp_lightmapmergepower.integer && (size << power) <= (int)vid.maxtexturesize_2d && (1 << (power * 2)) < 4 * (count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)); power++)
4689                 loadmodel->brushq3.num_lightmapmergepower = power;
4690
4691         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4692
4693         loadmodel->brushq3.num_mergedlightmaps = ((count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4694         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4695         if (loadmodel->brushq3.deluxemapping)
4696                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4697
4698         // allocate a texture pool if we need it
4699         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4700                 loadmodel->texturepool = R_AllocTexturePool();
4701
4702         power = loadmodel->brushq3.num_lightmapmergepower;
4703         power2 = power * 2;
4704         for (i = 0;i < count;i++)
4705         {
4706                 // figure out which merged lightmap texture this fits into
4707                 int lightmapindex = i >> (loadmodel->brushq3.deluxemapping + power2);
4708                 for (k = 0;k < size*size;k++)
4709                 {
4710                         convertedpixels[k*4+0] = inpixels[i][k*bytesperpixel+rgbmap[0]];
4711                         convertedpixels[k*4+1] = inpixels[i][k*bytesperpixel+rgbmap[1]];
4712                         convertedpixels[k*4+2] = inpixels[i][k*bytesperpixel+rgbmap[2]];
4713                         convertedpixels[k*4+3] = 255;
4714                 }
4715                 if (loadmodel->brushq3.num_lightmapmergepower > 0)
4716                 {
4717                         // if the lightmap has not been allocated yet, create it
4718                         if (!loadmodel->brushq3.data_lightmaps[lightmapindex])
4719                         {
4720                                 // create a lightmap only as large as necessary to hold the
4721                                 // remaining size*size blocks
4722                                 // if there are multiple merged lightmap textures then they will
4723                                 // all be full size except the last one which may be smaller
4724                                 // because it only needs to the remaining blocks, and it will often
4725                                 // be odd sizes like 2048x512 due to only being 25% full or so.
4726                                 j = (count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) - (lightmapindex << power2);
4727                                 for (mergewidth = 1;mergewidth < j && mergewidth < (1 << power);mergewidth *= 2)
4728                                         ;
4729                                 for (mergeheight = 1;mergewidth*mergeheight < j && mergeheight < (1 << power);mergeheight *= 2)
4730                                         ;
4731                                 if (developer_loading.integer)
4732                                         Con_Printf("lightmap merge texture #%i is %ix%i (%i of %i used)\n", lightmapindex, mergewidth*size, mergeheight*size, min(j, mergewidth*mergeheight), mergewidth*mergeheight);
4733                                 loadmodel->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergewidth * size, mergeheight * size, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : TEXF_ALLOWUPDATES), NULL);
4734                                 if (loadmodel->brushq3.data_deluxemaps)
4735                                         loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), mergewidth * size, mergeheight * size, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : TEXF_ALLOWUPDATES), NULL);
4736                         }
4737                         mergewidth = R_TextureWidth(loadmodel->brushq3.data_lightmaps[lightmapindex]) / size;
4738                         mergeheight = R_TextureHeight(loadmodel->brushq3.data_lightmaps[lightmapindex]) / size;
4739                         j = (i >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) & ((1 << power2) - 1);
4740                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4741                                 R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[lightmapindex], convertedpixels, (j % mergewidth) * size, (j / mergewidth) * size, size, size);
4742                         else
4743                                 R_UpdateTexture(loadmodel->brushq3.data_lightmaps [lightmapindex], convertedpixels, (j % mergewidth) * size, (j / mergewidth) * size, size, size);
4744                 }
4745                 else
4746                 {
4747                         // figure out which merged lightmap texture this fits into
4748                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4749                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), size, size, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), NULL);
4750                         else
4751                                 loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), size, size, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), NULL);
4752                 }
4753         }
4754
4755         Mem_Free(convertedpixels);
4756         if(external)
4757         {
4758                 for(i = 0; i < count; ++i)
4759                         Mem_Free(inpixels[i]);
4760         }
4761 }
4762
4763 static void Mod_Q3BSP_BuildBBoxes(const int *element3i, int num_triangles, const float *vertex3f, float **collisionbbox6f, int *collisionstride, int stride)
4764 {
4765         int j, k, cnt, tri;
4766         float *mins, *maxs;
4767         const float *vert;
4768         *collisionstride = stride;
4769         if(stride > 0)
4770         {
4771                 cnt = (num_triangles + stride - 1) / stride;
4772                 *collisionbbox6f = (float *) Mem_Alloc(loadmodel->mempool, sizeof(float[6]) * cnt);
4773                 for(j = 0; j < cnt; ++j)
4774                 {
4775                         mins = &((*collisionbbox6f)[6 * j + 0]);
4776                         maxs = &((*collisionbbox6f)[6 * j + 3]);
4777                         for(k = 0; k < stride; ++k)
4778                         {
4779                                 tri = j * stride + k;
4780                                 if(tri >= num_triangles)
4781                                         break;
4782                                 vert = &(vertex3f[element3i[3 * tri + 0] * 3]);
4783                                 if(!k || vert[0] < mins[0]) mins[0] = vert[0];
4784                                 if(!k || vert[1] < mins[1]) mins[1] = vert[1];
4785                                 if(!k || vert[2] < mins[2]) mins[2] = vert[2];
4786                                 if(!k || vert[0] > maxs[0]) maxs[0] = vert[0];
4787                                 if(!k || vert[1] > maxs[1]) maxs[1] = vert[1];
4788                                 if(!k || vert[2] > maxs[2]) maxs[2] = vert[2];
4789                                 vert = &(vertex3f[element3i[3 * tri + 1] * 3]);
4790                                 if(vert[0] < mins[0]) mins[0] = vert[0];
4791                                 if(vert[1] < mins[1]) mins[1] = vert[1];
4792                                 if(vert[2] < mins[2]) mins[2] = vert[2];
4793                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
4794                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
4795                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
4796                                 vert = &(vertex3f[element3i[3 * tri + 2] * 3]);
4797                                 if(vert[0] < mins[0]) mins[0] = vert[0];
4798                                 if(vert[1] < mins[1]) mins[1] = vert[1];
4799                                 if(vert[2] < mins[2]) mins[2] = vert[2];
4800                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
4801                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
4802                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
4803                         }
4804                 }
4805         }
4806         else
4807                 *collisionbbox6f = NULL;
4808 }
4809
4810 typedef struct patchtess_s
4811 {
4812         patchinfo_t info;
4813
4814         // Auxiliary data used only by patch loading code in Mod_Q3BSP_LoadFaces
4815         int surface_id;
4816         float lodgroup[6];
4817         float *originalvertex3f;
4818 } patchtess_t;
4819
4820 #define PATCHTESS_SAME_LODGROUP(a,b) \
4821         ( \
4822                 (a).lodgroup[0] == (b).lodgroup[0] && \
4823                 (a).lodgroup[1] == (b).lodgroup[1] && \
4824                 (a).lodgroup[2] == (b).lodgroup[2] && \
4825                 (a).lodgroup[3] == (b).lodgroup[3] && \
4826                 (a).lodgroup[4] == (b).lodgroup[4] && \
4827                 (a).lodgroup[5] == (b).lodgroup[5] \
4828         )
4829
4830 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4831 {
4832         q3dface_t *in, *oldin;
4833         msurface_t *out, *oldout;
4834         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, collisionvertices, collisiontriangles, numvertices, numtriangles, cxtess, cytess;
4835         float lightmaptcbase[2], lightmaptcscale[2];
4836         //int *originalelement3i;
4837         //int *originalneighbor3i;
4838         float *originalvertex3f;
4839         //float *originalsvector3f;
4840         //float *originaltvector3f;
4841         float *originalnormal3f;
4842         float *originalcolor4f;
4843         float *originaltexcoordtexture2f;
4844         float *originaltexcoordlightmap2f;
4845         float *surfacecollisionvertex3f;
4846         int *surfacecollisionelement3i;
4847         float *v;
4848         patchtess_t *patchtess = NULL;
4849         int patchtesscount = 0;
4850         qboolean again;
4851
4852         in = (q3dface_t *)(mod_base + l->fileofs);
4853         if (l->filelen % sizeof(*in))
4854                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4855         count = l->filelen / sizeof(*in);
4856         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4857
4858         loadmodel->data_surfaces = out;
4859         loadmodel->num_surfaces = count;
4860
4861         if(count > 0)
4862                 patchtess = (patchtess_t*) Mem_Alloc(tempmempool, count * sizeof(*patchtess));
4863
4864         i = 0;
4865         oldi = i;
4866         oldin = in;
4867         oldout = out;
4868         meshvertices = 0;
4869         meshtriangles = 0;
4870         for (;i < count;i++, in++, out++)
4871         {
4872                 // check face type first
4873                 type = LittleLong(in->type);
4874                 if (type != Q3FACETYPE_FLAT
4875                  && type != Q3FACETYPE_PATCH
4876                  && type != Q3FACETYPE_MESH
4877                  && type != Q3FACETYPE_FLARE)
4878                 {
4879                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4880                         continue;
4881                 }
4882
4883                 n = LittleLong(in->textureindex);
4884                 if (n < 0 || n >= loadmodel->num_textures)
4885                 {
4886                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4887                         continue;
4888                 }
4889                 out->texture = loadmodel->data_textures + n;
4890                 n = LittleLong(in->effectindex);
4891                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4892                 {
4893                         if (developer_extra.integer)
4894                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4895                         n = -1;
4896                 }
4897                 if (n == -1)
4898                         out->effect = NULL;
4899                 else
4900                         out->effect = loadmodel->brushq3.data_effects + n;
4901
4902                 if (cls.state != ca_dedicated)
4903                 {
4904                         out->lightmaptexture = NULL;
4905                         out->deluxemaptexture = r_texture_blanknormalmap;
4906                         n = LittleLong(in->lightmapindex);
4907                         if (n < 0)
4908                                 n = -1;
4909                         else if (n >= loadmodel->brushq3.num_originallightmaps)
4910                         {
4911                                 if(loadmodel->brushq3.num_originallightmaps != 0)
4912                                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
4913                                 n = -1;
4914                         }
4915                         else
4916                         {
4917                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4918                                 if (loadmodel->brushq3.deluxemapping)
4919                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4920                         }
4921                 }
4922
4923                 firstvertex = LittleLong(in->firstvertex);
4924                 numvertices = LittleLong(in->numvertices);
4925                 firstelement = LittleLong(in->firstelement);
4926                 numtriangles = LittleLong(in->numelements) / 3;
4927                 if (numtriangles * 3 != LittleLong(in->numelements))
4928                 {
4929                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): numelements %i is not a multiple of 3\n", i, out->texture->name, LittleLong(in->numelements));
4930                         continue;
4931                 }
4932                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4933                 {
4934                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid vertex range %i : %i (%i vertices)\n", i, out->texture->name, firstvertex, firstvertex + numvertices, loadmodel->brushq3.num_vertices);
4935                         continue;
4936                 }
4937                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4938                 {
4939                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid element range %i : %i (%i elements)\n", i, out->texture->name, firstelement, firstelement + numtriangles * 3, loadmodel->brushq3.num_triangles * 3);
4940                         continue;
4941                 }
4942                 switch(type)
4943                 {
4944                 case Q3FACETYPE_FLAT:
4945                 case Q3FACETYPE_MESH:
4946                         // no processing necessary
4947                         break;
4948                 case Q3FACETYPE_PATCH:
4949                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4950                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4951                         if (numvertices != (patchsize[0] * patchsize[1]) || patchsize[0] < 3 || patchsize[1] < 3 || !(patchsize[0] & 1) || !(patchsize[1] & 1) || patchsize[0] * patchsize[1] >= min(r_subdivisions_maxvertices.integer, r_subdivisions_collision_maxvertices.integer))
4952                         {
4953                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4954                                 continue;
4955                         }
4956                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4957
4958                         // convert patch to Q3FACETYPE_MESH
4959                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4960                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4961                         // bound to user settings
4962                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4963                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4964                         // bound to sanity settings
4965                         xtess = bound(0, xtess, 1024);
4966                         ytess = bound(0, ytess, 1024);
4967
4968                         // lower quality collision patches! Same procedure as before, but different cvars
4969                         // convert patch to Q3FACETYPE_MESH
4970                         cxtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4971                         cytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4972                         // bound to user settings
4973                         cxtess = bound(r_subdivisions_collision_mintess.integer, cxtess, r_subdivisions_collision_maxtess.integer);
4974                         cytess = bound(r_subdivisions_collision_mintess.integer, cytess, r_subdivisions_collision_maxtess.integer);
4975                         // bound to sanity settings
4976                         cxtess = bound(0, cxtess, 1024);
4977                         cytess = bound(0, cytess, 1024);
4978
4979                         // store it for the LOD grouping step
4980                         patchtess[patchtesscount].info.xsize = patchsize[0];
4981                         patchtess[patchtesscount].info.ysize = patchsize[1];
4982                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].xtess = xtess;
4983                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].ytess = ytess;
4984                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].xtess = cxtess;
4985                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].ytess = cytess;
4986
4987                         patchtess[patchtesscount].surface_id = i;
4988                         patchtess[patchtesscount].lodgroup[0] = LittleFloat(in->specific.patch.mins[0]);
4989                         patchtess[patchtesscount].lodgroup[1] = LittleFloat(in->specific.patch.mins[1]);
4990                         patchtess[patchtesscount].lodgroup[2] = LittleFloat(in->specific.patch.mins[2]);
4991                         patchtess[patchtesscount].lodgroup[3] = LittleFloat(in->specific.patch.maxs[0]);
4992                         patchtess[patchtesscount].lodgroup[4] = LittleFloat(in->specific.patch.maxs[1]);
4993                         patchtess[patchtesscount].lodgroup[5] = LittleFloat(in->specific.patch.maxs[2]);
4994                         patchtess[patchtesscount].originalvertex3f = originalvertex3f;
4995                         ++patchtesscount;
4996                         break;
4997                 case Q3FACETYPE_FLARE:
4998                         if (developer_extra.integer)
4999                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
5000                         // don't render it
5001                         continue;
5002                 }
5003                 out->num_vertices = numvertices;
5004                 out->num_triangles = numtriangles;
5005                 meshvertices += out->num_vertices;
5006                 meshtriangles += out->num_triangles;
5007         }
5008
5009         // Fix patches tesselations so that they make no seams
5010         do
5011         {
5012                 again = false;
5013                 for(i = 0; i < patchtesscount; ++i)
5014                 {
5015                         for(j = i+1; j < patchtesscount; ++j)
5016                         {
5017                                 if (!PATCHTESS_SAME_LODGROUP(patchtess[i], patchtess[j]))
5018                                         continue;
5019
5020                                 if (Q3PatchAdjustTesselation(3, &patchtess[i].info, patchtess[i].originalvertex3f, &patchtess[j].info, patchtess[j].originalvertex3f) )
5021                                         again = true;
5022                         }
5023                 }
5024         }
5025         while (again);
5026
5027         // Calculate resulting number of triangles
5028         collisionvertices = 0;
5029         collisiontriangles = 0;
5030         for(i = 0; i < patchtesscount; ++i)
5031         {
5032                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_VISUAL].xtess);
5033                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_VISUAL].ytess);
5034                 numvertices = finalwidth * finalheight;
5035                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5036
5037                 oldout[patchtess[i].surface_id].num_vertices = numvertices;
5038                 oldout[patchtess[i].surface_id].num_triangles = numtriangles;
5039                 meshvertices += oldout[patchtess[i].surface_id].num_vertices;
5040                 meshtriangles += oldout[patchtess[i].surface_id].num_triangles;
5041
5042                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_COLLISION].xtess);
5043                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_COLLISION].ytess);
5044                 numvertices = finalwidth * finalheight;
5045                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5046
5047                 oldout[patchtess[i].surface_id].num_collisionvertices = numvertices;
5048                 oldout[patchtess[i].surface_id].num_collisiontriangles = numtriangles;
5049                 collisionvertices += oldout[patchtess[i].surface_id].num_collisionvertices;
5050                 collisiontriangles += oldout[patchtess[i].surface_id].num_collisiontriangles;
5051         }
5052
5053         i = oldi;
5054         in = oldin;
5055         out = oldout;
5056         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5057         if (collisiontriangles)
5058         {
5059                 loadmodel->brush.data_collisionvertex3f = Mem_Alloc(loadmodel->mempool, collisionvertices * sizeof(float[3]));
5060                 loadmodel->brush.data_collisionelement3i = Mem_Alloc(loadmodel->mempool, collisiontriangles * sizeof(int[3]));
5061         }
5062         meshvertices = 0;
5063         meshtriangles = 0;
5064         collisionvertices = 0;
5065         collisiontriangles = 0;
5066         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5067         {
5068                 if (out->num_vertices < 3 || out->num_triangles < 1)
5069                         continue;
5070
5071                 type = LittleLong(in->type);
5072                 firstvertex = LittleLong(in->firstvertex);
5073                 firstelement = LittleLong(in->firstelement);
5074                 out->num_firstvertex = meshvertices;
5075                 out->num_firsttriangle = meshtriangles;
5076                 out->num_firstcollisiontriangle = collisiontriangles;
5077                 switch(type)
5078                 {
5079                 case Q3FACETYPE_FLAT:
5080                 case Q3FACETYPE_MESH:
5081                         // no processing necessary, except for lightmap merging
5082                         for (j = 0;j < out->num_vertices;j++)
5083                         {
5084                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5085                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5086                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5087                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5088                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5089                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5090                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5091                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5092                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5093                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5094                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5095                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5096                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5097                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5098                         }
5099                         for (j = 0;j < out->num_triangles*3;j++)
5100                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5101                         break;
5102                 case Q3FACETYPE_PATCH:
5103                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5104                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5105                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5106                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5107                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5108                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5109                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5110
5111                         xtess = ytess = cxtess = cytess = -1;
5112                         for(j = 0; j < patchtesscount; ++j)
5113                                 if(patchtess[j].surface_id == i)
5114                                 {
5115                                         xtess = patchtess[j].info.lods[PATCH_LOD_VISUAL].xtess;
5116                                         ytess = patchtess[j].info.lods[PATCH_LOD_VISUAL].ytess;
5117                                         cxtess = patchtess[j].info.lods[PATCH_LOD_COLLISION].xtess;
5118                                         cytess = patchtess[j].info.lods[PATCH_LOD_COLLISION].ytess;
5119                                         break;
5120                                 }
5121                         if(xtess == -1)
5122                         {
5123                                 Con_Printf("ERROR: patch %d isn't preprocessed?!?\n", i);
5124                                 xtess = ytess = cxtess = cytess = 0;
5125                         }
5126
5127                         finalwidth = Q3PatchDimForTess(patchsize[0],xtess); //((patchsize[0] - 1) * xtess) + 1;
5128                         finalheight = Q3PatchDimForTess(patchsize[1],ytess); //((patchsize[1] - 1) * ytess) + 1;
5129                         finalvertices = finalwidth * finalheight;
5130                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5131                         type = Q3FACETYPE_MESH;
5132                         // generate geometry
5133                         // (note: normals are skipped because they get recalculated)
5134                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5135                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5136                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5137                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5138                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5139                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5140
5141                         out->num_triangles = Mod_RemoveDegenerateTriangles(out->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), loadmodel->surfmesh.data_vertex3f);
5142
5143                         if (developer_extra.integer)
5144                         {
5145                                 if (out->num_triangles < finaltriangles)
5146                                         Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles, %i degenerate triangles removed (leaving %i)\n", patchsize[0], patchsize[1], out->num_vertices, finaltriangles, finaltriangles - out->num_triangles, out->num_triangles);
5147                                 else
5148                                         Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
5149                         }
5150                         // q3map does not put in collision brushes for curves... ugh
5151                         // build the lower quality collision geometry
5152                         finalwidth = Q3PatchDimForTess(patchsize[0],cxtess); //((patchsize[0] - 1) * cxtess) + 1;
5153                         finalheight = Q3PatchDimForTess(patchsize[1],cytess); //((patchsize[1] - 1) * cytess) + 1;
5154                         finalvertices = finalwidth * finalheight;
5155                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5156
5157                         // legacy collision geometry implementation
5158                         out->deprecatedq3data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5159                         out->deprecatedq3data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5160                         out->num_collisionvertices = finalvertices;
5161                         out->num_collisiontriangles = finaltriangles;
5162                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->deprecatedq3data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
5163                         Q3PatchTriangleElements(out->deprecatedq3data_collisionelement3i, finalwidth, finalheight, 0);
5164
5165                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5166                         Mod_SnapVertices(3, out->num_collisionvertices, out->deprecatedq3data_collisionvertex3f, 1);
5167
5168                         oldnumtriangles = out->num_triangles;
5169                         oldnumtriangles2 = out->num_collisiontriangles;
5170                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->deprecatedq3data_collisionelement3i, out->deprecatedq3data_collisionelement3i, out->deprecatedq3data_collisionvertex3f);
5171
5172                         // now optimize the collision mesh by finding triangle bboxes...
5173                         Mod_Q3BSP_BuildBBoxes(out->deprecatedq3data_collisionelement3i, out->num_collisiontriangles, out->deprecatedq3data_collisionvertex3f, &out->deprecatedq3data_collisionbbox6f, &out->deprecatedq3num_collisionbboxstride, mod_q3bsp_curves_collisions_stride.integer);
5174                         Mod_Q3BSP_BuildBBoxes(loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle, out->num_triangles, loadmodel->surfmesh.data_vertex3f, &out->deprecatedq3data_bbox6f, &out->deprecatedq3num_bboxstride, mod_q3bsp_curves_stride.integer);
5175
5176                         // store collision geometry for BIH collision tree
5177                         surfacecollisionvertex3f = loadmodel->brush.data_collisionvertex3f + collisionvertices * 3;
5178                         surfacecollisionelement3i = loadmodel->brush.data_collisionelement3i + collisiontriangles * 3;
5179                         Q3PatchTesselateFloat(3, sizeof(float[3]), surfacecollisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
5180                         Q3PatchTriangleElements(surfacecollisionelement3i, finalwidth, finalheight, collisionvertices);
5181                         Mod_SnapVertices(3, finalvertices, surfacecollisionvertex3f, 1);
5182                         oldnumtriangles = out->num_triangles;
5183                         oldnumtriangles2 = out->num_collisiontriangles;
5184                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, surfacecollisionelement3i, surfacecollisionelement3i, loadmodel->brush.data_collisionvertex3f);
5185
5186                         if (developer_extra.integer)
5187                                 Con_DPrintf("Mod_Q3BSP_LoadFaces: %ix%i curve became %i:%i vertices / %i:%i triangles (%i:%i degenerate)\n", patchsize[0], patchsize[1], out->num_vertices, out->num_collisionvertices, oldnumtriangles, oldnumtriangles2, oldnumtriangles - out->num_triangles, oldnumtriangles2 - out->num_collisiontriangles);
5188
5189                         collisionvertices += finalvertices;
5190                         collisiontriangles += out->num_collisiontriangles;
5191                         break;
5192                 default:
5193                         break;
5194                 }
5195                 meshvertices += out->num_vertices;
5196                 meshtriangles += out->num_triangles;
5197                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5198                         if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
5199                                 invalidelements++;
5200                 if (invalidelements)
5201                 {
5202                         Con_Printf("Mod_Q3BSP_LoadFaces: Warning: face #%i has %i invalid elements, type = %i, texture->name = \"%s\", texture->surfaceflags = %i, firstvertex = %i, numvertices = %i, firstelement = %i, numelements = %i, elements list:\n", i, invalidelements, type, out->texture->name, out->texture->surfaceflags, firstvertex, out->num_vertices, firstelement, out->num_triangles * 3);
5203                         for (j = 0;j < out->num_triangles * 3;j++)
5204                         {
5205                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5206                                 if ((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] < out->num_firstvertex || (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] >= out->num_firstvertex + out->num_vertices)
5207                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5208                         }
5209                         Con_Print("\n");
5210                 }
5211                 // calculate a bounding box
5212                 VectorClear(out->mins);
5213                 VectorClear(out->maxs);
5214                 if (out->num_vertices)
5215                 {
5216                         if (cls.state != ca_dedicated && out->lightmaptexture)
5217                         {
5218                                 // figure out which part of the merged lightmap this fits into
5219                                 int lightmapindex = LittleLong(in->lightmapindex) >> (loadmodel->brushq3.deluxemapping ? 1 : 0);
5220                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5221                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5222                                 lightmapindex &= mergewidth * mergeheight - 1;
5223                                 lightmaptcscale[0] = 1.0f / mergewidth;
5224                                 lightmaptcscale[1] = 1.0f / mergeheight;
5225                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
5226                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
5227                                 // modify the lightmap texcoords to match this region of the merged lightmap
5228                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5229                                 {
5230                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
5231                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
5232                                 }
5233                         }
5234                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5235                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5236                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5237                         {
5238                                 out->mins[0] = min(out->mins[0], v[0]);
5239                                 out->maxs[0] = max(out->maxs[0], v[0]);
5240                                 out->mins[1] = min(out->mins[1], v[1]);
5241                                 out->maxs[1] = max(out->maxs[1], v[1]);
5242                                 out->mins[2] = min(out->mins[2], v[2]);
5243                                 out->maxs[2] = max(out->maxs[2], v[2]);
5244                         }
5245                         out->mins[0] -= 1.0f;
5246                         out->mins[1] -= 1.0f;
5247                         out->mins[2] -= 1.0f;
5248                         out->maxs[0] += 1.0f;
5249                         out->maxs[1] += 1.0f;
5250                         out->maxs[2] += 1.0f;
5251                 }
5252                 // set lightmap styles for consistency with q1bsp
5253                 //out->lightmapinfo->styles[0] = 0;
5254                 //out->lightmapinfo->styles[1] = 255;
5255                 //out->lightmapinfo->styles[2] = 255;
5256                 //out->lightmapinfo->styles[3] = 255;
5257         }
5258
5259         i = oldi;
5260         out = oldout;
5261         for (;i < count;i++, out++)
5262         {
5263                 if(out->num_vertices && out->num_triangles)
5264                         continue;
5265                 if(out->num_vertices == 0)
5266                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d has no vertices, ignoring\n", i);
5267                 if(out->num_triangles == 0)
5268                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d has no triangles, ignoring\n", i);
5269         }
5270
5271         // for per pixel lighting
5272         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
5273
5274         // generate ushort elements array if possible
5275         if (loadmodel->surfmesh.data_element3s)
5276                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
5277                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
5278
5279         // free the no longer needed vertex data
5280         loadmodel->brushq3.num_vertices = 0;
5281         if (loadmodel->brushq3.data_vertex3f)
5282                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5283         loadmodel->brushq3.data_vertex3f = NULL;
5284         loadmodel->brushq3.data_normal3f = NULL;
5285         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5286         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5287         loadmodel->brushq3.data_color4f = NULL;
5288         // free the no longer needed triangle data
5289         loadmodel->brushq3.num_triangles = 0;
5290         if (loadmodel->brushq3.data_element3i)
5291                 Mem_Free(loadmodel->brushq3.data_element3i);
5292         loadmodel->brushq3.data_element3i = NULL;
5293
5294         if(patchtess)
5295                 Mem_Free(patchtess);
5296 }
5297
5298 static void Mod_Q3BSP_LoadModels(lump_t *l)
5299 {
5300         q3dmodel_t *in;
5301         q3dmodel_t *out;
5302         int i, j, n, c, count;
5303
5304         in = (q3dmodel_t *)(mod_base + l->fileofs);
5305         if (l->filelen % sizeof(*in))
5306                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5307         count = l->filelen / sizeof(*in);
5308         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5309
5310         loadmodel->brushq3.data_models = out;
5311         loadmodel->brushq3.num_models = count;
5312
5313         for (i = 0;i < count;i++, in++, out++)
5314         {
5315                 for (j = 0;j < 3;j++)
5316                 {
5317                         out->mins[j] = LittleFloat(in->mins[j]);
5318                         out->maxs[j] = LittleFloat(in->maxs[j]);
5319                 }
5320                 n = LittleLong(in->firstface);
5321                 c = LittleLong(in->numfaces);
5322                 if (n < 0 || n + c > loadmodel->num_surfaces)
5323                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5324                 out->firstface = n;
5325                 out->numfaces = c;
5326                 n = LittleLong(in->firstbrush);
5327                 c = LittleLong(in->numbrushes);
5328                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5329                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5330                 out->firstbrush = n;
5331                 out->numbrushes = c;
5332         }
5333 }
5334
5335 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5336 {
5337         int *in;
5338         int *out;
5339         int i, n, count;
5340
5341         in = (int *)(mod_base + l->fileofs);
5342         if (l->filelen % sizeof(*in))
5343                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5344         count = l->filelen / sizeof(*in);
5345         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5346
5347         loadmodel->brush.data_leafbrushes = out;
5348         loadmodel->brush.num_leafbrushes = count;
5349
5350         for (i = 0;i < count;i++, in++, out++)
5351         {
5352                 n = LittleLong(*in);
5353                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5354                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5355                 *out = n;
5356         }
5357 }
5358
5359 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5360 {
5361         int *in;
5362         int *out;
5363         int i, n, count;
5364
5365         in = (int *)(mod_base + l->fileofs);
5366         if (l->filelen % sizeof(*in))
5367                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5368         count = l->filelen / sizeof(*in);
5369         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5370
5371         loadmodel->brush.data_leafsurfaces = out;
5372         loadmodel->brush.num_leafsurfaces = count;
5373
5374         for (i = 0;i < count;i++, in++, out++)
5375         {
5376                 n = LittleLong(*in);
5377                 if (n < 0 || n >= loadmodel->num_surfaces)
5378                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5379                 *out = n;
5380         }
5381 }
5382
5383 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5384 {
5385         q3dleaf_t *in;
5386         mleaf_t *out;
5387         int i, j, n, c, count;
5388
5389         in = (q3dleaf_t *)(mod_base + l->fileofs);
5390         if (l->filelen % sizeof(*in))
5391                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5392         count = l->filelen / sizeof(*in);
5393         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5394
5395         loadmodel->brush.data_leafs = out;
5396         loadmodel->brush.num_leafs = count;
5397
5398         for (i = 0;i < count;i++, in++, out++)
5399         {
5400                 out->parent = NULL;
5401                 out->plane = NULL;
5402                 out->clusterindex = LittleLong(in->clusterindex);
5403                 out->areaindex = LittleLong(in->areaindex);
5404                 for (j = 0;j < 3;j++)
5405                 {
5406                         // yes the mins/maxs are ints
5407                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5408                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5409                 }
5410                 n = LittleLong(in->firstleafface);
5411                 c = LittleLong(in->numleaffaces);
5412                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5413                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5414                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5415                 out->numleafsurfaces = c;
5416                 n = LittleLong(in->firstleafbrush);
5417                 c = LittleLong(in->numleafbrushes);
5418                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5419                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5420                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5421                 out->numleafbrushes = c;
5422         }
5423 }
5424
5425 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5426 {
5427         q3dnode_t *in;
5428         mnode_t *out;
5429         int i, j, n, count;
5430
5431         in = (q3dnode_t *)(mod_base + l->fileofs);
5432         if (l->filelen % sizeof(*in))
5433                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5434         count = l->filelen / sizeof(*in);
5435         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5436
5437         loadmodel->brush.data_nodes = out;
5438         loadmodel->brush.num_nodes = count;
5439
5440         for (i = 0;i < count;i++, in++, out++)
5441         {
5442                 out->parent = NULL;
5443                 n = LittleLong(in->planeindex);
5444                 if (n < 0 || n >= loadmodel->brush.num_planes)
5445                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5446                 out->plane = loadmodel->brush.data_planes + n;
5447                 for (j = 0;j < 2;j++)
5448                 {
5449                         n = LittleLong(in->childrenindex[j]);
5450                         if (n >= 0)
5451                         {
5452                                 if (n >= loadmodel->brush.num_nodes)
5453                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5454                                 out->children[j] = loadmodel->brush.data_nodes + n;
5455                         }
5456                         else
5457                         {
5458                                 n = -1 - n;
5459                                 if (n >= loadmodel->brush.num_leafs)
5460                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5461                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5462                         }
5463                 }
5464                 for (j = 0;j < 3;j++)
5465                 {
5466                         // yes the mins/maxs are ints
5467                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5468                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5469                 }
5470         }
5471
5472         // set the parent pointers
5473         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5474 }
5475
5476 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5477 {
5478         q3dlightgrid_t *in;
5479         q3dlightgrid_t *out;
5480         int count;
5481
5482         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5483         if (l->filelen % sizeof(*in))
5484                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5485         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5486         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5487         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5488         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5489         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5490         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5491         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5492         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5493         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5494         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5495         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5496         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5497         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5498         Matrix4x4_CreateScale3(&loadmodel->brushq3.num_lightgrid_indexfromworld, loadmodel->brushq3.num_lightgrid_scale[0], loadmodel->brushq3.num_lightgrid_scale[1], loadmodel->brushq3.num_lightgrid_scale[2]);
5499         Matrix4x4_ConcatTranslate(&loadmodel->brushq3.num_lightgrid_indexfromworld, -loadmodel->brushq3.num_lightgrid_imins[0] * loadmodel->brushq3.num_lightgrid_cellsize[0], -loadmodel->brushq3.num_lightgrid_imins[1] * loadmodel->brushq3.num_lightgrid_cellsize[1], -loadmodel->brushq3.num_lightgrid_imins[2] * loadmodel->brushq3.num_lightgrid_cellsize[2]);
5500
5501         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5502         if (l->filelen)
5503         {
5504                 if (l->filelen < count * (int)sizeof(*in))
5505                 {
5506                         Con_Printf("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_isize[0], loadmodel->brushq3.num_lightgrid_isize[1], loadmodel->brushq3.num_lightgrid_isize[2]);
5507                         return; // ignore the grid if we cannot understand it
5508                 }
5509                 if (l->filelen != count * (int)sizeof(*in))
5510                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5511                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5512                 loadmodel->brushq3.data_lightgrid = out;
5513                 loadmodel->brushq3.num_lightgrid = count;
5514                 // no swapping or validation necessary
5515                 memcpy(out, in, count * (int)sizeof(*out));
5516         }
5517 }
5518
5519 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5520 {
5521         q3dpvs_t *in;
5522         int totalchains;
5523
5524         if (l->filelen == 0)
5525         {
5526                 int i;
5527                 // unvised maps often have cluster indices even without pvs, so check
5528                 // leafs to find real number of clusters
5529                 loadmodel->brush.num_pvsclusters = 1;
5530                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5531                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5532
5533                 // create clusters
5534                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5535                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5536                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5537                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5538                 return;
5539         }
5540
5541         in = (q3dpvs_t *)(mod_base + l->fileofs);
5542         if (l->filelen < 9)
5543                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5544
5545         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5546         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5547         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5548                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5549         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5550         if (l->filelen < totalchains + (int)sizeof(*in))
5551                 Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, (int)(totalchains + sizeof(*in)), l->filelen);
5552
5553         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5554         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5555 }
5556
5557 static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5558 {
5559         int i, j, k, index[3];
5560         float transformed[3], blend1, blend2, blend, stylescale;
5561         q3dlightgrid_t *a, *s;
5562
5563         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5564         stylescale = r_refdef.scene.rtlightstylevalue[0];
5565
5566         if (!model->brushq3.num_lightgrid)
5567         {
5568                 ambientcolor[0] = stylescale;
5569                 ambientcolor[1] = stylescale;
5570                 ambientcolor[2] = stylescale;
5571                 return;
5572         }
5573
5574         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5575         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5576         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5577         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5578         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5579         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5580         index[0] = (int)floor(transformed[0]);
5581         index[1] = (int)floor(transformed[1]);
5582         index[2] = (int)floor(transformed[2]);
5583         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5584
5585         // now lerp the values
5586         VectorClear(diffusenormal);
5587         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5588         for (k = 0;k < 2;k++)
5589         {
5590                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5591                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5592                         continue;
5593                 for (j = 0;j < 2;j++)
5594                 {
5595                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5596                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5597                                 continue;
5598                         for (i = 0;i < 2;i++)
5599                         {
5600                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5601                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5602                                         continue;
5603                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5604                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5605                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5606                                 // this uses the mod_md3_sin table because the values are
5607                                 // already in the 0-255 range, the 64+ bias fetches a cosine
5608                                 // instead of a sine value
5609                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5610                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5611                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
5612                                 //Con_Printf("blend %f: ambient %i %i %i, diffuse %i %i %i, diffusepitch %i diffuseyaw %i (%f %f, normal %f %f %f)\n", blend, s->ambientrgb[0], s->ambientrgb[1], s->ambientrgb[2], s->diffusergb[0], s->diffusergb[1], s->diffusergb[2], s->diffusepitch, s->diffuseyaw, pitch, yaw, (cos(yaw) * cospitch), (sin(yaw) * cospitch), (-sin(pitch)));
5613                         }
5614                 }
5615         }
5616
5617         // normalize the light direction before turning
5618         VectorNormalize(diffusenormal);
5619         //Con_Printf("result: ambient %f %f %f diffuse %f %f %f diffusenormal %f %f %f\n", ambientcolor[0], ambientcolor[1], ambientcolor[2], diffusecolor[0], diffusecolor[1], diffusecolor[2], diffusenormal[0], diffusenormal[1], diffusenormal[2]);
5620 }
5621
5622 static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
5623 {
5624         double t1, t2;
5625         double midf, mid[3];
5626         int ret, side;
5627
5628         // check for empty
5629         while (node->plane)
5630         {
5631                 // find the point distances
5632                 mplane_t *plane = node->plane;
5633                 if (plane->type < 3)
5634                 {
5635                         t1 = p1[plane->type] - plane->dist;
5636                         t2 = p2[plane->type] - plane->dist;
5637                 }
5638                 else
5639                 {
5640                         t1 = DotProduct (plane->normal, p1) - plane->dist;
5641                         t2 = DotProduct (plane->normal, p2) - plane->dist;
5642                 }
5643
5644                 if (t1 < 0)
5645                 {
5646                         if (t2 < 0)
5647                         {
5648                                 node = node->children[1];
5649                                 continue;
5650                         }
5651                         side = 1;
5652                 }
5653                 else
5654                 {
5655                         if (t2 >= 0)
5656                         {
5657                                 node = node->children[0];
5658                                 continue;
5659                         }
5660                         side = 0;
5661                 }
5662
5663                 midf = t1 / (t1 - t2);
5664                 VectorLerp(p1, midf, p2, mid);
5665
5666                 // recurse both sides, front side first
5667                 // return 2 if empty is followed by solid (hit something)
5668                 // do not return 2 if both are solid or both empty,
5669                 // or if start is solid and end is empty
5670                 // as these degenerate cases usually indicate the eye is in solid and
5671                 // should see the target point anyway
5672                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
5673                 if (ret != 0)
5674                         return ret;
5675                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
5676                 if (ret != 1)
5677                         return ret;
5678                 return 2;
5679         }
5680         return ((mleaf_t *)node)->clusterindex < 0;
5681 }
5682
5683 static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
5684 {
5685         if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
5686         {
5687                 trace_t trace;
5688                 model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
5689                 return trace.fraction == 1;
5690         }
5691         else
5692         {
5693                 double tracestart[3], traceend[3];
5694                 VectorCopy(start, tracestart);
5695                 VectorCopy(end, traceend);
5696                 return !Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend);
5697         }
5698 }
5699
5700 static void Mod_CollisionBIH_TracePoint_RecursiveBIHNode(trace_t *trace, dp_model_t *model, int nodenum, const vec3_t point)
5701 {
5702         const bih_leaf_t *leaf;
5703         const bih_node_t *node;
5704         const colbrushf_t *brush;
5705         int axis;
5706         while (nodenum >= 0)
5707         {
5708                 node = model->collision_bih.nodes + nodenum;
5709                 axis = node->type - BIH_SPLITX;
5710                 if (point[axis] <= node->backmax)
5711                 {
5712                         if (point[axis] >= node->frontmin)
5713                                 Mod_CollisionBIH_TracePoint_RecursiveBIHNode(trace, model, node->front, point);
5714                         nodenum = node->back;
5715                 }
5716                 else if (point[axis] >= node->frontmin)
5717                         nodenum = node->front;
5718                 else // no overlap with either child?  just return
5719                         return;
5720         }
5721         if (!model->collision_bih.leafs)
5722                 return;
5723         leaf = model->collision_bih.leafs + (-1-nodenum);
5724         switch(leaf->type)
5725         {
5726         case BIH_BRUSH:
5727                 brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
5728                 Collision_TracePointBrushFloat(trace, point, brush);
5729                 break;
5730         case BIH_COLLISIONTRIANGLE:
5731                 // collision triangle - skipped because they have no volume
5732                 break;
5733         case BIH_RENDERTRIANGLE:
5734                 // render triangle - skipped because they have no volume
5735                 break;
5736         }
5737 }
5738
5739 static void Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace_t *trace, dp_model_t *model, int nodenum, const vec3_t start, const vec3_t end, const vec3_t linestart, const vec3_t lineend)
5740 {
5741         const bih_leaf_t *leaf;
5742         const bih_node_t *node;
5743         const colbrushf_t *brush;
5744         const int *e;
5745         const texture_t *texture;
5746         int axis;
5747 #define BIHLINECLIP
5748 #ifdef BIHLINECLIP
5749         int sideflags;
5750         vec_t frontdist1;
5751         vec_t frontdist2;
5752         vec_t frontfrac;
5753         vec_t backdist1;
5754         vec_t backdist2;
5755         vec_t backfrac;
5756         vec3_t clipped[2];
5757 #endif
5758         vec3_t segmentmins;
5759         vec3_t segmentmaxs;
5760         segmentmins[0] = min(start[0], end[0]);
5761         segmentmins[1] = min(start[1], end[1]);
5762         segmentmins[2] = min(start[2], end[2]);
5763         segmentmaxs[0] = max(start[0], end[0]);
5764         segmentmaxs[1] = max(start[1], end[1]);
5765         segmentmaxs[2] = max(start[2], end[2]);
5766         while (nodenum >= 0)
5767         {
5768                 node = model->collision_bih.nodes + nodenum;
5769 #if 0
5770                 if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
5771                         return;
5772 #endif
5773                 axis = node->type - BIH_SPLITX;
5774 #if 0
5775                 if (segmentmins[axis] <= node->backmax)
5776                 {
5777                         if (segmentmaxs[axis] >= node->frontmin)
5778                                 Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5779                         nodenum = node->back;
5780                 }
5781                 else if (segmentmaxs[axis] >= node->frontmin)
5782                         nodenum = node->front;
5783                 else
5784                         return; // trace falls between children
5785 #else
5786                 frontdist1 = start[axis] - node->frontmin;
5787                 frontdist2 = end[axis] - node->frontmin;
5788                 backdist1 = start[axis] - node->backmax;
5789                 backdist2 = end[axis] - node->backmax;
5790                 sideflags = 0;
5791                 if (frontdist1 < 0)
5792                         sideflags |= 1;
5793                 if (frontdist2 < 0)
5794                         sideflags |= 2;
5795                 if (backdist1 < 0)
5796                         sideflags |= 4;
5797                 if (backdist2 < 0)
5798                         sideflags |= 8;
5799 #if 0
5800                 if (sideflags & 12)
5801                 {
5802                         if ((sideflags & 3) != 3)
5803                                 Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5804                         nodenum = node->back;
5805                 }
5806                 else if ((sideflags & 3) != 3)
5807                         nodenum = node->front;
5808                 else
5809                         return; // trace falls between children
5810 #else
5811                 switch(sideflags)
5812                 {
5813                 case 0:
5814                         // start end START END
5815                         nodenum = node->front;
5816                         continue;
5817                 case 1:
5818                         // START end START END
5819 #ifdef BIHLINECLIP
5820                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
5821                         VectorLerp(start, frontfrac, end, clipped[0]);
5822                         start = clipped[0];
5823                         segmentmins[0] = min(start[0], end[0]);
5824                         segmentmins[1] = min(start[1], end[1]);
5825                         segmentmins[2] = min(start[2], end[2]);
5826                         segmentmaxs[0] = max(start[0], end[0]);
5827                         segmentmaxs[1] = max(start[1], end[1]);
5828                         segmentmaxs[2] = max(start[2], end[2]);
5829 #endif
5830                         nodenum = node->front;
5831                         break;
5832                 case 2:
5833 #ifdef BIHLINECLIP
5834                         // start END START END
5835                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
5836                         VectorLerp(start, frontfrac, end, clipped[0]);
5837                         end = clipped[0];
5838                         segmentmins[0] = min(start[0], end[0]);
5839                         segmentmins[1] = min(start[1], end[1]);
5840                         segmentmins[2] = min(start[2], end[2]);
5841                         segmentmaxs[0] = max(start[0], end[0]);
5842                         segmentmaxs[1] = max(start[1], end[1]);
5843                         segmentmaxs[2] = max(start[2], end[2]);
5844 #endif
5845                         nodenum = node->front;
5846                         break;
5847                 case 3:
5848                         // START END START END
5849                         return; // line falls in gap between children
5850                 case 4:
5851                         // start end start END
5852                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5853 #ifdef BIHLINECLIP
5854                         backfrac = backdist1 / (backdist1 - backdist2);
5855                         VectorLerp(start, backfrac, end, clipped[0]);
5856                         end = clipped[0];
5857                         segmentmins[0] = min(start[0], end[0]);
5858                         segmentmins[1] = min(start[1], end[1]);
5859                         segmentmins[2] = min(start[2], end[2]);
5860                         segmentmaxs[0] = max(start[0], end[0]);
5861                         segmentmaxs[1] = max(start[1], end[1]);
5862                         segmentmaxs[2] = max(start[2], end[2]);
5863 #endif
5864                         nodenum = node->back;
5865                         break;
5866                 case 5:
5867                         // START end start END
5868 #ifdef BIHLINECLIP
5869                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
5870                         VectorLerp(start, frontfrac, end, clipped[1]);
5871                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, clipped[1], end, linestart, lineend);
5872                         backfrac = backdist1 / (backdist1 - backdist2);
5873                         VectorLerp(start, backfrac, end, clipped[0]);
5874                         end = clipped[0];
5875                         segmentmins[0] = min(start[0], end[0]);
5876                         segmentmins[1] = min(start[1], end[1]);
5877                         segmentmins[2] = min(start[2], end[2]);
5878                         segmentmaxs[0] = max(start[0], end[0]);
5879                         segmentmaxs[1] = max(start[1], end[1]);
5880                         segmentmaxs[2] = max(start[2], end[2]);
5881 #else
5882                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5883 #endif
5884                         nodenum = node->back;
5885                         break;
5886                 case 6:
5887                         // start END start END
5888 #ifdef BIHLINECLIP
5889                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
5890                         VectorLerp(start, frontfrac, end, clipped[1]);
5891                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, clipped[1], linestart, lineend);
5892                         backfrac = backdist1 / (backdist1 - backdist2);
5893                         VectorLerp(start, backfrac, end, clipped[0]);
5894                         end = clipped[0];
5895                         segmentmins[0] = min(start[0], end[0]);
5896                         segmentmins[1] = min(start[1], end[1]);
5897                         segmentmins[2] = min(start[2], end[2]);
5898                         segmentmaxs[0] = max(start[0], end[0]);
5899                         segmentmaxs[1] = max(start[1], end[1]);
5900                         segmentmaxs[2] = max(start[2], end[2]);
5901 #else
5902                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5903 #endif
5904                         nodenum = node->back;
5905                         break;
5906                 case 7:
5907                         // START END start END
5908 #ifdef BIHLINECLIP
5909                         backfrac = backdist1 / (backdist1 - backdist2);
5910                         VectorLerp(start, backfrac, end, clipped[0]);
5911                         end = clipped[0];
5912                         segmentmins[0] = min(start[0], end[0]);
5913                         segmentmins[1] = min(start[1], end[1]);
5914                         segmentmins[2] = min(start[2], end[2]);
5915                         segmentmaxs[0] = max(start[0], end[0]);
5916                         segmentmaxs[1] = max(start[1], end[1]);
5917                         segmentmaxs[2] = max(start[2], end[2]);
5918 #endif
5919                         nodenum = node->back;
5920                         break;
5921                 case 8:
5922                         // start end START end
5923                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5924 #ifdef BIHLINECLIP
5925                         backfrac = backdist1 / (backdist1 - backdist2);
5926                         VectorLerp(start, backfrac, end, clipped[0]);
5927                         start = clipped[0];
5928                         segmentmins[0] = min(start[0], end[0]);
5929                         segmentmins[1] = min(start[1], end[1]);
5930                         segmentmins[2] = min(start[2], end[2]);
5931                         segmentmaxs[0] = max(start[0], end[0]);
5932                         segmentmaxs[1] = max(start[1], end[1]);
5933                         segmentmaxs[2] = max(start[2], end[2]);
5934 #endif
5935                         nodenum = node->back;
5936                         break;
5937                 case 9:
5938                         // START end START end
5939 #ifdef BIHLINECLIP
5940                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
5941                         VectorLerp(start, frontfrac, end, clipped[1]);
5942                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, clipped[1], end, linestart, lineend);
5943                         backfrac = backdist1 / (backdist1 - backdist2);
5944                         VectorLerp(start, backfrac, end, clipped[0]);
5945                         start = clipped[0];
5946                         segmentmins[0] = min(start[0], end[0]);
5947                         segmentmins[1] = min(start[1], end[1]);
5948                         segmentmins[2] = min(start[2], end[2]);
5949                         segmentmaxs[0] = max(start[0], end[0]);
5950                         segmentmaxs[1] = max(start[1], end[1]);
5951                         segmentmaxs[2] = max(start[2], end[2]);
5952 #else
5953                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5954 #endif
5955                         nodenum = node->back;
5956                         break;
5957                 case 10:
5958                         // start END START end
5959 #ifdef BIHLINECLIP
5960                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
5961                         VectorLerp(start, frontfrac, end, clipped[1]);
5962                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, clipped[1], linestart, lineend);
5963                         backfrac = backdist1 / (backdist1 - backdist2);
5964                         VectorLerp(start, backfrac, end, clipped[0]);
5965                         start = clipped[0];
5966                         segmentmins[0] = min(start[0], end[0]);
5967                         segmentmins[1] = min(start[1], end[1]);
5968                         segmentmins[2] = min(start[2], end[2]);
5969                         segmentmaxs[0] = max(start[0], end[0]);
5970                         segmentmaxs[1] = max(start[1], end[1]);
5971                         segmentmaxs[2] = max(start[2], end[2]);
5972 #else
5973                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5974 #endif
5975                         nodenum = node->back;
5976                         break;
5977                 case 11:
5978                         // START END START end
5979 #ifdef BIHLINECLIP
5980                         backfrac = backdist1 / (backdist1 - backdist2);
5981                         VectorLerp(start, backfrac, end, clipped[0]);
5982                         start = clipped[0];
5983                         segmentmins[0] = min(start[0], end[0]);
5984                         segmentmins[1] = min(start[1], end[1]);
5985                         segmentmins[2] = min(start[2], end[2]);
5986                         segmentmaxs[0] = max(start[0], end[0]);
5987                         segmentmaxs[1] = max(start[1], end[1]);
5988                         segmentmaxs[2] = max(start[2], end[2]);
5989 #endif
5990                         nodenum = node->back;
5991                         break;
5992                 case 12:
5993                         // start end start end
5994                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
5995                         nodenum = node->back;
5996                         break;
5997                 case 13:
5998                         // START end start end
5999 #ifdef BIHLINECLIP
6000                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
6001                         VectorLerp(start, frontfrac, end, clipped[1]);
6002                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, clipped[1], end, linestart, lineend);
6003 #else
6004                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
6005 #endif
6006                         nodenum = node->back;
6007                         break;
6008                 case 14:
6009                         // start END start end
6010 #ifdef BIHLINECLIP
6011                         frontfrac = frontdist1 / (frontdist1 - frontdist2);
6012                         VectorLerp(start, frontfrac, end, clipped[1]);
6013                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, clipped[1], linestart, lineend);
6014 #else
6015                         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, node->front, start, end, linestart, lineend);
6016 #endif
6017                         nodenum = node->back;
6018                         break;
6019                 case 15:
6020                         // START END start end
6021                         nodenum = node->back;
6022                         continue;
6023                 }
6024 #endif
6025 #endif
6026         }
6027         if (!model->collision_bih.leafs)
6028                 return;
6029         leaf = model->collision_bih.leafs + (-1-nodenum);
6030 #if 1
6031         if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
6032                 return;
6033 #endif
6034         switch(leaf->type)
6035         {
6036         case BIH_BRUSH:
6037                 brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
6038                 Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
6039                 break;
6040         case BIH_COLLISIONTRIANGLE:
6041                 if (!mod_q3bsp_curves_collisions.integer)
6042                         return;
6043                 e = model->brush.data_collisionelement3i + 3*leaf->itemindex;
6044                 texture = model->data_textures + leaf->textureindex;
6045                 Collision_TraceLineTriangleFloat(trace, linestart, lineend, model->brush.data_collisionvertex3f + e[0] * 3, model->brush.data_collisionvertex3f + e[1] * 3, model->brush.data_collisionvertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
6046                 break;
6047         case BIH_RENDERTRIANGLE:
6048                 e = model->surfmesh.data_element3i + 3*leaf->itemindex;
6049                 texture = model->data_textures + leaf->textureindex;
6050                 Collision_TraceLineTriangleFloat(trace, linestart, lineend, model->surfmesh.data_vertex3f + e[0] * 3, model->surfmesh.data_vertex3f + e[1] * 3, model->surfmesh.data_vertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
6051                 break;
6052         }
6053 }
6054
6055 static void Mod_CollisionBIH_TraceBrush_RecursiveBIHNode(trace_t *trace, dp_model_t *model, int nodenum, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, const vec3_t segmentmins, const vec3_t segmentmaxs)
6056 {
6057         const bih_leaf_t *leaf;
6058         const bih_node_t *node;
6059         const colbrushf_t *brush;
6060         const int *e;
6061         const texture_t *texture;
6062         int axis;
6063         while (nodenum >= 0)
6064         {
6065                 node = model->collision_bih.nodes + nodenum;
6066                 axis = node->type - BIH_SPLITX;
6067 #if 1
6068                 if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
6069                         return;
6070 #endif
6071 #if 0
6072                 Mod_CollisionBIH_TraceBrush_RecursiveBIHNode(trace, model, node->front, thisbrush_start, thisbrush_end, segmentmins, segmentmaxs);
6073                 nodenum = node->back;
6074                 continue;
6075 #endif
6076                 if (segmentmins[axis] <= node->backmax)
6077                 {
6078                         if (segmentmaxs[axis] >= node->frontmin)
6079                                 Mod_CollisionBIH_TraceBrush_RecursiveBIHNode(trace, model, node->front, thisbrush_start, thisbrush_end, segmentmins, segmentmaxs);
6080                         nodenum = node->back;
6081                 }
6082                 else if (segmentmaxs[axis] >= node->frontmin)
6083                         nodenum = node->front;
6084                 else
6085                         return; // trace falls between children
6086         }
6087         if (!model->collision_bih.leafs)
6088                 return;
6089         leaf = model->collision_bih.leafs + (-1-nodenum);
6090 #if 1
6091         if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
6092                 return;
6093 #endif
6094         switch(leaf->type)
6095         {
6096         case BIH_BRUSH:
6097                 brush = model->brush.data_brushes[leaf->itemindex].colbrushf;
6098                 Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
6099                 break;
6100         case BIH_COLLISIONTRIANGLE:
6101                 if (!mod_q3bsp_curves_collisions.integer)
6102                         return;
6103                 e = model->brush.data_collisionelement3i + 3*leaf->itemindex;
6104                 texture = model->data_textures + leaf->textureindex;
6105                 Collision_TraceBrushTriangleFloat(trace, thisbrush_start, thisbrush_end, model->brush.data_collisionvertex3f + e[0] * 3, model->brush.data_collisionvertex3f + e[1] * 3, model->brush.data_collisionvertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
6106                 break;
6107         case BIH_RENDERTRIANGLE:
6108                 e = model->surfmesh.data_element3i + 3*leaf->itemindex;
6109                 texture = model->data_textures + leaf->textureindex;
6110                 Collision_TraceBrushTriangleFloat(trace, thisbrush_start, thisbrush_end, model->surfmesh.data_vertex3f + e[0] * 3, model->surfmesh.data_vertex3f + e[1] * 3, model->surfmesh.data_vertex3f + e[2] * 3, texture->supercontents, texture->surfaceflags, texture);
6111                 break;
6112         }
6113 }
6114
6115 void Mod_CollisionBIH_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
6116 {
6117         memset(trace, 0, sizeof(*trace));
6118         trace->fraction = 1;
6119         trace->realfraction = 1;
6120         trace->hitsupercontentsmask = hitsupercontentsmask;
6121         Mod_CollisionBIH_TracePoint_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, start);
6122 }
6123
6124 void Mod_CollisionBIH_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
6125 {
6126         if (VectorCompare(start, end))
6127         {
6128                 Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
6129                 return;
6130         }
6131
6132         memset(trace, 0, sizeof(*trace));
6133         trace->fraction = 1;
6134         trace->realfraction = 1;
6135         trace->hitsupercontentsmask = hitsupercontentsmask;
6136         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, start, end, start, end);
6137 }
6138
6139 void Mod_CollisionBIH_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
6140 {
6141         float segmentmins[3], segmentmaxs[3];
6142         colboxbrushf_t thisbrush_start, thisbrush_end;
6143         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
6144
6145         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(boxmins, boxmaxs))
6146         {
6147                 vec3_t shiftstart, shiftend;
6148                 VectorAdd(start, boxmins, shiftstart);
6149                 VectorAdd(end, boxmins, shiftend);
6150                 if (VectorCompare(start, end))
6151                         Mod_CollisionBIH_TracePoint(model, frameblend, skeleton, trace, shiftstart, hitsupercontentsmask);
6152                 else
6153                 {
6154                         Mod_CollisionBIH_TraceLine(model, frameblend, skeleton, trace, shiftstart, shiftend, hitsupercontentsmask);
6155                         VectorSubtract(trace->endpos, boxmins, trace->endpos);
6156                 }
6157                 return;
6158         }
6159
6160         // box trace, performed as brush trace
6161         memset(trace, 0, sizeof(*trace));
6162         trace->fraction = 1;
6163         trace->realfraction = 1;
6164         trace->hitsupercontentsmask = hitsupercontentsmask;
6165         segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
6166         segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
6167         segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
6168         segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
6169         segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
6170         segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
6171         VectorAdd(start, boxmins, boxstartmins);
6172         VectorAdd(start, boxmaxs, boxstartmaxs);
6173         VectorAdd(end, boxmins, boxendmins);
6174         VectorAdd(end, boxmaxs, boxendmaxs);
6175         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
6176         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
6177         Mod_CollisionBIH_TraceBrush_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, &thisbrush_start.brush, &thisbrush_end.brush, segmentmins, segmentmaxs);
6178 }
6179
6180 int Mod_CollisionBIH_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
6181 {
6182         trace_t trace;
6183         Mod_CollisionBIH_TracePoint(model, NULL, NULL, &trace, point, 0);
6184         return trace.startsupercontents;
6185 }
6186
6187 void Mod_CollisionBIH_TracePoint_Mesh(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
6188 {
6189 #if 0
6190         // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
6191         vec3_t end;
6192         int hitsupercontents;
6193         VectorSet(end, start[0], start[1], model->normalmins[2]);
6194 #endif
6195         memset(trace, 0, sizeof(*trace));
6196         trace->fraction = 1;
6197         trace->realfraction = 1;
6198         trace->hitsupercontentsmask = hitsupercontentsmask;
6199 #if 0
6200         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, start, end, start, end);
6201         hitsupercontents = trace->hitsupercontents;
6202         memset(trace, 0, sizeof(*trace));
6203         trace->fraction = 1;
6204         trace->realfraction = 1;
6205         trace->hitsupercontentsmask = hitsupercontentsmask;
6206         trace->startsupercontents = hitsupercontents;
6207 #endif
6208 }
6209
6210 int Mod_CollisionBIH_PointSuperContents_Mesh(struct model_s *model, int frame, const vec3_t start)
6211 {
6212 #if 0
6213         // broken - needs to be modified to count front faces and backfaces to figure out if it is in solid
6214         trace_t trace;
6215         vec3_t end;
6216         VectorSet(end, start[0], start[1], model->normalmins[2]);
6217         memset(&trace, 0, sizeof(trace));
6218         trace.fraction = 1;
6219         trace.realfraction = 1;
6220         trace.hitsupercontentsmask = 0;
6221         Mod_CollisionBIH_TraceLine_RecursiveBIHNode(&trace, model, model->collision_bih.rootnode, start, end, start, end);
6222         return trace.hitsupercontents;
6223 #else
6224         return 0;
6225 #endif
6226 }
6227
6228 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t point, int markframe)
6229 {
6230         int i;
6231         mleaf_t *leaf;
6232         colbrushf_t *brush;
6233         // find which leaf the point is in
6234         while (node->plane)
6235                 node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
6236         // point trace the brushes
6237         leaf = (mleaf_t *)node;
6238         for (i = 0;i < leaf->numleafbrushes;i++)
6239         {
6240                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
6241                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
6242                 {
6243                         brush->markframe = markframe;
6244                         Collision_TracePointBrushFloat(trace, point, brush);
6245                 }
6246         }
6247         // can't do point traces on curves (they have no thickness)
6248 }
6249
6250 static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t start, const vec3_t end, vec_t startfrac, vec_t endfrac, const vec3_t linestart, const vec3_t lineend, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
6251 {
6252         int i, startside, endside;
6253         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
6254         mleaf_t *leaf;
6255         msurface_t *surface;
6256         mplane_t *plane;
6257         colbrushf_t *brush;
6258         // walk the tree until we hit a leaf, recursing for any split cases
6259         while (node->plane)
6260         {
6261 #if 0
6262                 if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
6263                         return;
6264                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[0], start, end, startfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
6265                 node = node->children[1];
6266 #else
6267                 // abort if this part of the bsp tree can not be hit by this trace
6268 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6269 //                      return;
6270                 plane = node->plane;
6271                 // axial planes are much more common than non-axial, so an optimized
6272                 // axial case pays off here
6273                 if (plane->type < 3)
6274                 {
6275                         dist1 = start[plane->type] - plane->dist;
6276                         dist2 = end[plane->type] - plane->dist;
6277                 }
6278                 else
6279                 {
6280                         dist1 = DotProduct(start, plane->normal) - plane->dist;
6281                         dist2 = DotProduct(end, plane->normal) - plane->dist;
6282                 }
6283                 startside = dist1 < 0;
6284                 endside = dist2 < 0;
6285                 if (startside == endside)
6286                 {
6287                         // most of the time the line fragment is on one side of the plane
6288                         node = node->children[startside];
6289                 }
6290                 else
6291                 {
6292                         // line crosses node plane, split the line
6293                         dist1 = PlaneDiff(linestart, plane);
6294                         dist2 = PlaneDiff(lineend, plane);
6295                         midfrac = dist1 / (dist1 - dist2);
6296                         VectorLerp(linestart, midfrac, lineend, mid);
6297                         // take the near side first
6298                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
6299                         // if we found an impact on the front side, don't waste time
6300                         // exploring the far side
6301                         if (midfrac <= trace->realfraction)
6302                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
6303                         return;
6304                 }
6305 #endif
6306         }
6307         // abort if this part of the bsp tree can not be hit by this trace
6308 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6309 //              return;
6310         // hit a leaf
6311         nodesegmentmins[0] = min(start[0], end[0]) - 1;
6312         nodesegmentmins[1] = min(start[1], end[1]) - 1;
6313         nodesegmentmins[2] = min(start[2], end[2]) - 1;
6314         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
6315         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
6316         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
6317         // line trace the brushes
6318         leaf = (mleaf_t *)node;
6319 #if 0
6320         if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
6321                 return;
6322 #endif
6323         for (i = 0;i < leaf->numleafbrushes;i++)
6324         {
6325                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
6326                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
6327                 {
6328                         brush->markframe = markframe;
6329                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
6330                 }
6331         }
6332         // can't do point traces on curves (they have no thickness)
6333         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
6334         {
6335                 // line trace the curves
6336                 for (i = 0;i < leaf->numleafsurfaces;i++)
6337                 {
6338                         surface = model->data_surfaces + leaf->firstleafsurface[i];
6339                         if (surface->num_collisiontriangles && surface->deprecatedq3collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
6340                         {
6341                                 surface->deprecatedq3collisionmarkframe = markframe;
6342                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6343                         }
6344                 }
6345         }
6346 }
6347
6348 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const colbrushf_t *thisbrush_start, const colbrushf_t *thisbrush_end, int markframe, const vec3_t segmentmins, const vec3_t segmentmaxs)
6349 {
6350         int i;
6351         int sides;
6352         mleaf_t *leaf;
6353         colbrushf_t *brush;
6354         msurface_t *surface;
6355         mplane_t *plane;
6356         float nodesegmentmins[3], nodesegmentmaxs[3];
6357         // walk the tree until we hit a leaf, recursing for any split cases
6358         while (node->plane)
6359         {
6360 #if 0
6361                 if (!BoxesOverlap(segmentmins, segmentmaxs, node->mins, node->maxs))
6362                         return;
6363                 Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
6364                 node = node->children[1];
6365 #else
6366                 // abort if this part of the bsp tree can not be hit by this trace
6367 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6368 //                      return;
6369                 plane = node->plane;
6370                 // axial planes are much more common than non-axial, so an optimized
6371                 // axial case pays off here
6372                 if (plane->type < 3)
6373                 {
6374                         // this is an axial plane, compare bounding box directly to it and
6375                         // recurse sides accordingly
6376                         // recurse down node sides
6377                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
6378                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
6379                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
6380                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
6381                 }
6382                 else
6383                 {
6384                         // this is a non-axial plane, so check if the start and end boxes
6385                         // are both on one side of the plane to handle 'diagonal' cases
6386                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
6387                 }
6388                 if (sides == 3)
6389                 {
6390                         // segment crosses plane
6391                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
6392                         sides = 2;
6393                 }
6394                 // if sides == 0 then the trace itself is bogus (Not A Number values),
6395                 // in this case we simply pretend the trace hit nothing
6396                 if (sides == 0)
6397                         return; // ERROR: NAN bounding box!
6398                 // take whichever side the segment box is on
6399                 node = node->children[sides - 1];
6400 #endif
6401         }
6402         // abort if this part of the bsp tree can not be hit by this trace
6403 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
6404 //              return;
6405         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
6406         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
6407         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
6408         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
6409         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
6410         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
6411         // hit a leaf
6412         leaf = (mleaf_t *)node;
6413 #if 0
6414         if (!BoxesOverlap(segmentmins, segmentmaxs, leaf->mins, leaf->maxs))
6415                 return;
6416 #endif
6417         for (i = 0;i < leaf->numleafbrushes;i++)
6418         {
6419                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
6420                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
6421                 {
6422                         brush->markframe = markframe;
6423                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
6424                 }
6425         }
6426         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
6427         {
6428                 for (i = 0;i < leaf->numleafsurfaces;i++)
6429                 {
6430                         surface = model->data_surfaces + leaf->firstleafsurface[i];
6431                         if (surface->num_collisiontriangles && surface->deprecatedq3collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
6432                         {
6433                                 surface->deprecatedq3collisionmarkframe = markframe;
6434                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6435                         }
6436                 }
6437         }
6438 }
6439
6440
6441 static int markframe = 0;
6442
6443 static void Mod_Q3BSP_TracePoint(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, int hitsupercontentsmask)
6444 {
6445         int i;
6446         q3mbrush_t *brush;
6447         memset(trace, 0, sizeof(*trace));
6448         trace->fraction = 1;
6449         trace->realfraction = 1;
6450         trace->hitsupercontentsmask = hitsupercontentsmask;
6451         if (mod_collision_bih.integer)
6452                 Mod_CollisionBIH_TracePoint_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, start);
6453         else if (model->brush.submodel)
6454         {
6455                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6456                         if (brush->colbrushf)
6457                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
6458         }
6459         else
6460                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
6461 }
6462
6463 static void Mod_Q3BSP_TraceLine(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t end, int hitsupercontentsmask)
6464 {
6465         int i;
6466         float segmentmins[3], segmentmaxs[3];
6467         msurface_t *surface;
6468         q3mbrush_t *brush;
6469
6470         if (VectorCompare(start, end))
6471         {
6472                 Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
6473                 return;
6474         }
6475
6476         memset(trace, 0, sizeof(*trace));
6477         trace->fraction = 1;
6478         trace->realfraction = 1;
6479         trace->hitsupercontentsmask = hitsupercontentsmask;
6480         segmentmins[0] = min(start[0], end[0]) - 1;
6481         segmentmins[1] = min(start[1], end[1]) - 1;
6482         segmentmins[2] = min(start[2], end[2]) - 1;
6483         segmentmaxs[0] = max(start[0], end[0]) + 1;
6484         segmentmaxs[1] = max(start[1], end[1]) + 1;
6485         segmentmaxs[2] = max(start[2], end[2]) + 1;
6486         if (mod_collision_bih.integer)
6487                 Mod_CollisionBIH_TraceLine_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, start, end, start, end);
6488         else if (model->brush.submodel)
6489         {
6490                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6491                         if (brush->colbrushf && BoxesOverlap(segmentmins, segmentmaxs, brush->colbrushf->mins, brush->colbrushf->maxs))
6492                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
6493                 if (mod_q3bsp_curves_collisions.integer)
6494                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
6495                                 if (surface->num_collisiontriangles && BoxesOverlap(segmentmins, segmentmaxs, surface->mins, surface->maxs))
6496                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6497         }
6498         else
6499                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
6500 }
6501
6502 static void Mod_Q3BSP_TraceBox(dp_model_t *model, const frameblend_t *frameblend, const skeleton_t *skeleton, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
6503 {
6504         int i;
6505         float segmentmins[3], segmentmaxs[3];
6506         msurface_t *surface;
6507         q3mbrush_t *brush;
6508         colboxbrushf_t thisbrush_start, thisbrush_end;
6509         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
6510
6511         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(boxmins, boxmaxs))
6512         {
6513                 vec3_t shiftstart, shiftend;
6514                 VectorAdd(start, boxmins, shiftstart);
6515                 VectorAdd(end, boxmins, shiftend);
6516                 if (VectorCompare(start, end))
6517                         Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, shiftstart, hitsupercontentsmask);
6518                 else
6519                 {
6520                         Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, shiftstart, shiftend, hitsupercontentsmask);
6521                         VectorSubtract(trace->endpos, boxmins, trace->endpos);
6522                 }
6523                 return;
6524         }
6525
6526         // box trace, performed as brush trace
6527         memset(trace, 0, sizeof(*trace));
6528         trace->fraction = 1;
6529         trace->realfraction = 1;
6530         trace->hitsupercontentsmask = hitsupercontentsmask;
6531         segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
6532         segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
6533         segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
6534         segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
6535         segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
6536         segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
6537         VectorAdd(start, boxmins, boxstartmins);
6538         VectorAdd(start, boxmaxs, boxstartmaxs);
6539         VectorAdd(end, boxmins, boxendmins);
6540         VectorAdd(end, boxmaxs, boxendmaxs);
6541         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
6542         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
6543         if (mod_collision_bih.integer)
6544                 Mod_CollisionBIH_TraceBrush_RecursiveBIHNode(trace, model, model->collision_bih.rootnode, &thisbrush_start.brush, &thisbrush_end.brush, segmentmins, segmentmaxs);
6545         else if (model->brush.submodel)
6546         {
6547                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6548                         if (brush->colbrushf && BoxesOverlap(segmentmins, segmentmaxs, brush->colbrushf->mins, brush->colbrushf->maxs))
6549                                 Collision_TraceBrushBrushFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, brush->colbrushf, brush->colbrushf);
6550                 if (mod_q3bsp_curves_collisions.integer)
6551                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
6552                                 if (surface->num_collisiontriangles && BoxesOverlap(segmentmins, segmentmaxs, surface->mins, surface->maxs))
6553                                         Collision_TraceBrushTriangleMeshFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, surface->num_collisiontriangles, surface->deprecatedq3data_collisionelement3i, surface->deprecatedq3data_collisionvertex3f, surface->deprecatedq3num_collisionbboxstride, surface->deprecatedq3data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
6554         }
6555         else
6556                 Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, &thisbrush_start.brush, &thisbrush_end.brush, ++markframe, segmentmins, segmentmaxs);
6557 }
6558
6559 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
6560 {
6561         int i;
6562         int supercontents = 0;
6563         q3mbrush_t *brush;
6564         if (mod_collision_bih.integer)
6565         {
6566                 trace_t trace;
6567                 Mod_Q3BSP_TracePoint(model, NULL, NULL, &trace, point, 0);
6568                 supercontents = trace.startsupercontents;
6569         }
6570         // test if the point is inside each brush
6571         else if (model->brush.submodel)
6572         {
6573                 // submodels are effectively one leaf
6574                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
6575                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
6576                                 supercontents |= brush->colbrushf->supercontents;
6577         }
6578         else
6579         {
6580                 mnode_t *node = model->brush.data_nodes;
6581                 mleaf_t *leaf;
6582                 // find which leaf the point is in
6583                 while (node->plane)
6584                         node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
6585                 leaf = (mleaf_t *)node;
6586                 // now check the brushes in the leaf
6587                 for (i = 0;i < leaf->numleafbrushes;i++)
6588                 {
6589                         brush = model->brush.data_brushes + leaf->firstleafbrush[i];
6590                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
6591                                 supercontents |= brush->colbrushf->supercontents;
6592                 }
6593         }
6594         return supercontents;
6595 }
6596
6597 void Mod_MakeCollisionBIH(dp_model_t *model, qboolean userendersurfaces)
6598 {
6599         int j;
6600         int bihnumleafs;
6601         int bihmaxnodes;
6602         int brushindex;
6603         int triangleindex;
6604         int bihleafindex;
6605         int nummodelbrushes = model->nummodelbrushes;
6606         int nummodelsurfaces = model->nummodelsurfaces;
6607         const int *e;
6608         const int *collisionelement3i;
6609         const float *collisionvertex3f;
6610         const int *renderelement3i;
6611         const float *rendervertex3f;
6612         bih_leaf_t *bihleafs;
6613         bih_node_t *bihnodes;
6614         int *temp_leafsort;
6615         int *temp_leafsortscratch;
6616         const msurface_t *surface;
6617         const q3mbrush_t *brush;
6618
6619         // find out how many BIH leaf nodes we need
6620         bihnumleafs = 0;
6621         if (userendersurfaces)
6622         {
6623                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6624                         bihnumleafs += surface->num_triangles;
6625         }
6626         else
6627         {
6628                 for (brushindex = 0, brush = model->brush.data_brushes + brushindex+model->firstmodelbrush;brushindex < nummodelbrushes;brushindex++, brush++)
6629                         if (brush->colbrushf)
6630                                 bihnumleafs++;
6631                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6632                         bihnumleafs += surface->num_collisiontriangles;
6633         }
6634
6635         if (!bihnumleafs)
6636                 return;
6637
6638         // allocate the memory for the BIH leaf nodes
6639         bihleafs = Mem_Alloc(loadmodel->mempool, sizeof(bih_leaf_t) * bihnumleafs);
6640
6641         // now populate the BIH leaf nodes
6642         bihleafindex = 0;
6643         if (userendersurfaces)
6644         {
6645                 // add render surfaces
6646                 renderelement3i = model->surfmesh.data_element3i;
6647                 rendervertex3f = model->surfmesh.data_vertex3f;
6648                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6649                 {
6650                         for (triangleindex = 0, e = renderelement3i + 3*surface->num_firsttriangle;triangleindex < surface->num_triangles;triangleindex++, e += 3)
6651                         {
6652                                 bihleafs[bihleafindex].type = BIH_RENDERTRIANGLE;
6653                                 bihleafs[bihleafindex].textureindex = surface->texture - model->data_textures;
6654                                 bihleafs[bihleafindex].itemindex = triangleindex+surface->num_firsttriangle;
6655                                 bihleafs[bihleafindex].mins[0] = min(rendervertex3f[3*e[0]+0], min(rendervertex3f[3*e[1]+0], rendervertex3f[3*e[2]+0])) - 1;
6656                                 bihleafs[bihleafindex].mins[1] = min(rendervertex3f[3*e[0]+1], min(rendervertex3f[3*e[1]+1], rendervertex3f[3*e[2]+1])) - 1;
6657                                 bihleafs[bihleafindex].mins[2] = min(rendervertex3f[3*e[0]+2], min(rendervertex3f[3*e[1]+2], rendervertex3f[3*e[2]+2])) - 1;
6658                                 bihleafs[bihleafindex].maxs[0] = max(rendervertex3f[3*e[0]+0], max(rendervertex3f[3*e[1]+0], rendervertex3f[3*e[2]+0])) + 1;
6659                                 bihleafs[bihleafindex].maxs[1] = max(rendervertex3f[3*e[0]+1], max(rendervertex3f[3*e[1]+1], rendervertex3f[3*e[2]+1])) + 1;
6660                                 bihleafs[bihleafindex].maxs[2] = max(rendervertex3f[3*e[0]+2], max(rendervertex3f[3*e[1]+2], rendervertex3f[3*e[2]+2])) + 1;
6661                                 bihleafindex++;
6662                         }
6663                 }
6664         }
6665         else
6666         {
6667                 // add collision brushes
6668                 for (brushindex = 0, brush = model->brush.data_brushes + brushindex+model->firstmodelbrush;brushindex < nummodelbrushes;brushindex++, brush++)
6669                 {
6670                         if (!brush->colbrushf)
6671                                 continue;
6672                         bihleafs[bihleafindex].type = BIH_BRUSH;
6673                         bihleafs[bihleafindex].textureindex = brush->texture - model->data_textures;
6674                         bihleafs[bihleafindex].itemindex = brushindex+model->firstmodelbrush;
6675                         VectorCopy(brush->colbrushf->mins, bihleafs[bihleafindex].mins);
6676                         VectorCopy(brush->colbrushf->maxs, bihleafs[bihleafindex].maxs);
6677                         bihleafindex++;
6678                 }
6679
6680                 // add collision surfaces
6681                 collisionelement3i = model->brush.data_collisionelement3i;
6682                 collisionvertex3f = model->brush.data_collisionvertex3f;
6683                 for (j = 0, surface = model->data_surfaces + model->firstmodelsurface;j < nummodelsurfaces;j++, surface++)
6684                 {
6685                         for (triangleindex = 0, e = collisionelement3i + 3*surface->num_firstcollisiontriangle;triangleindex < surface->num_collisiontriangles;triangleindex++, e += 3)
6686                         {
6687                                 bihleafs[bihleafindex].type = BIH_COLLISIONTRIANGLE;
6688                                 bihleafs[bihleafindex].textureindex = surface->texture - model->data_textures;
6689                                 bihleafs[bihleafindex].itemindex = triangleindex+surface->num_firstcollisiontriangle;
6690                                 bihleafs[bihleafindex].mins[0] = min(collisionvertex3f[3*e[0]+0], min(collisionvertex3f[3*e[1]+0], collisionvertex3f[3*e[2]+0])) - 1;
6691                                 bihleafs[bihleafindex].mins[1] = min(collisionvertex3f[3*e[0]+1], min(collisionvertex3f[3*e[1]+1], collisionvertex3f[3*e[2]+1])) - 1;
6692                                 bihleafs[bihleafindex].mins[2] = min(collisionvertex3f[3*e[0]+2], min(collisionvertex3f[3*e[1]+2], collisionvertex3f[3*e[2]+2])) - 1;
6693                                 bihleafs[bihleafindex].maxs[0] = max(collisionvertex3f[3*e[0]+0], max(collisionvertex3f[3*e[1]+0], collisionvertex3f[3*e[2]+0])) + 1;
6694                                 bihleafs[bihleafindex].maxs[1] = max(collisionvertex3f[3*e[0]+1], max(collisionvertex3f[3*e[1]+1], collisionvertex3f[3*e[2]+1])) + 1;
6695                                 bihleafs[bihleafindex].maxs[2] = max(collisionvertex3f[3*e[0]+2], max(collisionvertex3f[3*e[1]+2], collisionvertex3f[3*e[2]+2])) + 1;
6696                                 bihleafindex++;
6697                         }
6698                 }
6699         }
6700
6701         // allocate buffers for the produced and temporary data
6702         bihmaxnodes = bihnumleafs - 1;
6703         bihnodes = Mem_Alloc(loadmodel->mempool, sizeof(bih_node_t) * bihmaxnodes);
6704         temp_leafsort = Mem_Alloc(loadmodel->mempool, sizeof(int) * bihnumleafs * 2);
6705         temp_leafsortscratch = temp_leafsort + bihnumleafs;
6706
6707         // now build it
6708         BIH_Build(&model->collision_bih, bihnumleafs, bihleafs, bihmaxnodes, bihnodes, temp_leafsort, temp_leafsortscratch);
6709
6710         // we're done with the temporary data
6711         Mem_Free(temp_leafsort);
6712
6713         // resize the BIH nodes array if it over-allocated
6714         if (model->collision_bih.maxnodes > model->collision_bih.numnodes)
6715         {
6716                 model->collision_bih.maxnodes = model->collision_bih.numnodes;
6717                 model->collision_bih.nodes = Mem_Realloc(loadmodel->mempool, model->collision_bih.nodes, model->collision_bih.numnodes * sizeof(bih_node_t));
6718         }
6719 }
6720
6721 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
6722 {
6723         int supercontents = 0;
6724         if (nativecontents & CONTENTSQ3_SOLID)
6725                 supercontents |= SUPERCONTENTS_SOLID;
6726         if (nativecontents & CONTENTSQ3_WATER)
6727                 supercontents |= SUPERCONTENTS_WATER;
6728         if (nativecontents & CONTENTSQ3_SLIME)
6729                 supercontents |= SUPERCONTENTS_SLIME;
6730         if (nativecontents & CONTENTSQ3_LAVA)
6731                 supercontents |= SUPERCONTENTS_LAVA;
6732         if (nativecontents & CONTENTSQ3_BODY)
6733                 supercontents |= SUPERCONTENTS_BODY;
6734         if (nativecontents & CONTENTSQ3_CORPSE)
6735                 supercontents |= SUPERCONTENTS_CORPSE;
6736         if (nativecontents & CONTENTSQ3_NODROP)
6737                 supercontents |= SUPERCONTENTS_NODROP;
6738         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
6739                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
6740         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
6741                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
6742         if (nativecontents & CONTENTSQ3_DONOTENTER)
6743                 supercontents |= SUPERCONTENTS_DONOTENTER;
6744         if (nativecontents & CONTENTSQ3_BOTCLIP)
6745                 supercontents |= SUPERCONTENTS_BOTCLIP;
6746         if (!(nativecontents & CONTENTSQ3_TRANSLUCENT))
6747                 supercontents |= SUPERCONTENTS_OPAQUE;
6748         return supercontents;
6749 }
6750
6751 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
6752 {
6753         int nativecontents = 0;
6754         if (supercontents & SUPERCONTENTS_SOLID)
6755                 nativecontents |= CONTENTSQ3_SOLID;
6756         if (supercontents & SUPERCONTENTS_WATER)
6757                 nativecontents |= CONTENTSQ3_WATER;
6758         if (supercontents & SUPERCONTENTS_SLIME)
6759                 nativecontents |= CONTENTSQ3_SLIME;
6760         if (supercontents & SUPERCONTENTS_LAVA)
6761                 nativecontents |= CONTENTSQ3_LAVA;
6762         if (supercontents & SUPERCONTENTS_BODY)
6763                 nativecontents |= CONTENTSQ3_BODY;
6764         if (supercontents & SUPERCONTENTS_CORPSE)
6765                 nativecontents |= CONTENTSQ3_CORPSE;
6766         if (supercontents & SUPERCONTENTS_NODROP)
6767                 nativecontents |= CONTENTSQ3_NODROP;
6768         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
6769                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
6770         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
6771                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
6772         if (supercontents & SUPERCONTENTS_DONOTENTER)
6773                 nativecontents |= CONTENTSQ3_DONOTENTER;
6774         if (supercontents & SUPERCONTENTS_BOTCLIP)
6775                 nativecontents |= CONTENTSQ3_BOTCLIP;
6776         if (!(supercontents & SUPERCONTENTS_OPAQUE))
6777                 nativecontents |= CONTENTSQ3_TRANSLUCENT;
6778         return nativecontents;
6779 }
6780
6781 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
6782 {
6783         int numleafs;
6784         while (node->plane)
6785         {
6786                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
6787                 node = node->children[1];
6788         }
6789         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
6790         if (loadmodel->brush.num_leafs < numleafs)
6791                 loadmodel->brush.num_leafs = numleafs;
6792 }
6793
6794 void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6795 {
6796         int i, j, numshadowmeshtriangles, lumps;
6797         q3dheader_t *header;
6798         float corner[3], yawradius, modelradius;
6799         msurface_t *surface;
6800
6801         mod->modeldatatypestring = "Q3BSP";
6802
6803         mod->type = mod_brushq3;
6804         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
6805         mod->numskins = 1;
6806
6807         header = (q3dheader_t *)buffer;
6808         if((char *) bufferend < (char *) buffer + sizeof(q3dheader_t))
6809                 Host_Error("Mod_Q3BSP_Load: %s is smaller than its header", mod->name);
6810
6811         i = LittleLong(header->version);
6812         if (i != Q3BSPVERSION && i != Q3BSPVERSION_IG && i != Q3BSPVERSION_LIVE)
6813                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
6814
6815         mod->soundfromcenter = true;
6816         mod->TraceBox = Mod_Q3BSP_TraceBox;
6817         mod->TraceLine = Mod_Q3BSP_TraceLine;
6818         mod->TracePoint = Mod_Q3BSP_TracePoint;
6819         mod->PointSuperContents = Mod_Q3BSP_PointSuperContents;
6820         mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
6821         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
6822         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
6823         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
6824         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
6825         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
6826         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
6827         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
6828         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
6829         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
6830         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6831         mod->brush.AmbientSoundLevelsForPoint = NULL;
6832         mod->brush.RoundUpToHullSize = NULL;
6833         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
6834         mod->Draw = R_Q1BSP_Draw;
6835         mod->DrawDepth = R_Q1BSP_DrawDepth;
6836         mod->DrawDebug = R_Q1BSP_DrawDebug;
6837         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
6838         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
6839         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
6840         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
6841         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
6842         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
6843         mod->DrawLight = R_Q1BSP_DrawLight;
6844
6845         mod_base = (unsigned char *)header;
6846
6847         // swap all the lumps
6848         header->ident = LittleLong(header->ident);
6849         header->version = LittleLong(header->version);
6850         lumps = (header->version == Q3BSPVERSION_LIVE) ? Q3HEADER_LUMPS_LIVE : Q3HEADER_LUMPS;
6851         for (i = 0;i < lumps;i++)
6852         {
6853                 j = (header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs));
6854                 if((char *) bufferend < (char *) buffer + j)
6855                         Host_Error("Mod_Q3BSP_Load: %s has a lump that starts outside the file!", mod->name);
6856                 j += (header->lumps[i].filelen = LittleLong(header->lumps[i].filelen));
6857                 if((char *) bufferend < (char *) buffer + j)
6858                         Host_Error("Mod_Q3BSP_Load: %s has a lump that ends outside the file!", mod->name);
6859         }
6860         /*
6861          * NO, do NOT clear them!
6862          * they contain actual data referenced by other stuff.
6863          * Instead, before using the advertisements lump, check header->versio
6864          * again!
6865          * Sorry, but otherwise it breaks memory of the first lump.
6866         for (i = lumps;i < Q3HEADER_LUMPS_MAX;i++)
6867         {
6868                 header->lumps[i].fileofs = 0;
6869                 header->lumps[i].filelen = 0;
6870         }
6871         */
6872
6873         mod->brush.qw_md4sum = 0;
6874         mod->brush.qw_md4sum2 = 0;
6875         for (i = 0;i < lumps;i++)
6876         {
6877                 if (i == Q3LUMP_ENTITIES)
6878                         continue;
6879                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6880                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
6881                         continue;
6882                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6883
6884                 // all this checksumming can take a while, so let's send keepalives here too
6885                 CL_KeepaliveMessage(false);
6886         }
6887
6888         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
6889         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
6890         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
6891         if (header->version == Q3BSPVERSION_IG)
6892                 Mod_Q3BSP_LoadBrushSides_IG(&header->lumps[Q3LUMP_BRUSHSIDES]);
6893         else
6894                 Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
6895         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
6896         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
6897         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
6898         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
6899         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
6900         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
6901         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
6902         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
6903         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
6904         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6905         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6906         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6907         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6908         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6909
6910         // the MakePortals code works fine on the q3bsp data as well
6911         Mod_Q1BSP_MakePortals();
6912
6913         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6914         loadmodel->brush.supportwateralpha = true;
6915
6916         // make a single combined shadow mesh to allow optimized shadow volume creation
6917         numshadowmeshtriangles = 0;
6918         if (cls.state != ca_dedicated)
6919         {
6920                 for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6921                 {
6922                         surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6923                         numshadowmeshtriangles += surface->num_triangles;
6924                 }
6925                 loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6926                 for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6927                         if (surface->num_triangles > 0)
6928                                 Mod_ShadowMesh_AddMesh(loadmodel->mempool, loadmodel->brush.shadowmesh, NULL, NULL, NULL, loadmodel->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
6929                 loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6930                 if (loadmodel->brush.shadowmesh)
6931                         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6932         }
6933
6934         loadmodel->brush.num_leafs = 0;
6935         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6936
6937         if (loadmodel->brush.numsubmodels)
6938                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
6939
6940         mod = loadmodel;
6941         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6942         {
6943                 if (i > 0)
6944                 {
6945                         char name[10];
6946                         // duplicate the basic information
6947                         dpsnprintf(name, sizeof(name), "*%i", i);
6948                         mod = Mod_FindName(name, loadmodel->name);
6949                         // copy the base model to this one
6950                         *mod = *loadmodel;
6951                         // rename the clone back to its proper name
6952                         strlcpy(mod->name, name, sizeof(mod->name));
6953                         mod->brush.parentmodel = loadmodel;
6954                         // textures and memory belong to the main model
6955                         mod->texturepool = NULL;
6956                         mod->mempool = NULL;
6957                         mod->brush.GetPVS = NULL;
6958                         mod->brush.FatPVS = NULL;
6959                         mod->brush.BoxTouchingPVS = NULL;
6960                         mod->brush.BoxTouchingLeafPVS = NULL;
6961                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6962                         mod->brush.FindBoxClusters = NULL;
6963                         mod->brush.LightPoint = NULL;
6964                         mod->brush.AmbientSoundLevelsForPoint = NULL;
6965                 }
6966                 mod->brush.submodel = i;
6967                 if (loadmodel->brush.submodels)
6968                         loadmodel->brush.submodels[i] = mod;
6969
6970                 // make the model surface list (used by shadowing/lighting)
6971                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6972                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6973                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6974                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6975                 mod->sortedmodelsurfaces = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
6976                 Mod_MakeSortedSurfaces(mod);
6977
6978                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6979                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6980                 // enlarge the bounding box to enclose all geometry of this model,
6981                 // because q3map2 sometimes lies (mostly to affect the lightgrid),
6982                 // which can in turn mess up the farclip (as well as culling when
6983                 // outside the level - an unimportant concern)
6984
6985                 //printf("Editing model %d... BEFORE re-bounding: %f %f %f - %f %f %f\n", i, mod->normalmins[0], mod->normalmins[1], mod->normalmins[2], mod->normalmaxs[0], mod->normalmaxs[1], mod->normalmaxs[2]);
6986                 for (j = 0;j < mod->nummodelsurfaces;j++)
6987                 {
6988                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
6989                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
6990                         int k;
6991                         if (!surface->num_vertices)
6992                                 continue;
6993                         for (k = 0;k < surface->num_vertices;k++, v += 3)
6994                         {
6995                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
6996                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
6997                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
6998                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
6999                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
7000                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
7001                         }
7002                 }
7003                 //printf("Editing model %d... AFTER re-bounding: %f %f %f - %f %f %f\n", i, mod->normalmins[0], mod->normalmins[1], mod->normalmins[2], mod->normalmaxs[0], mod->normalmaxs[1], mod->normalmaxs[2]);
7004                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
7005                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
7006                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
7007                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
7008                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
7009                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
7010                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
7011                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
7012                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
7013                 mod->yawmins[2] = mod->normalmins[2];
7014                 mod->yawmaxs[2] = mod->normalmaxs[2];
7015                 mod->radius = modelradius;
7016                 mod->radius2 = modelradius * modelradius;
7017
7018                 // this gets altered below if sky or water is used
7019                 mod->DrawSky = NULL;
7020                 mod->DrawAddWaterPlanes = NULL;
7021
7022                 for (j = 0;j < mod->nummodelsurfaces;j++)
7023                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
7024                                 break;
7025                 if (j < mod->nummodelsurfaces)
7026                         mod->DrawSky = R_Q1BSP_DrawSky;
7027
7028                 for (j = 0;j < mod->nummodelsurfaces;j++)
7029                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
7030                                 break;
7031                 if (j < mod->nummodelsurfaces)
7032                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
7033
7034                 Mod_MakeCollisionBIH(mod, false);
7035
7036                 // generate VBOs and other shared data before cloning submodels
7037                 if (i == 0)
7038                         Mod_BuildVBOs();
7039         }
7040
7041         Con_DPrintf("Stats for q3bsp model \"%s\": %i faces, %i nodes, %i leafs, %i clusters, %i clusterportals, mesh: %i vertices, %i triangles, %i surfaces\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->num_surfaces);
7042 }
7043
7044 void Mod_IBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7045 {
7046         int i = LittleLong(((int *)buffer)[1]);
7047         if (i == Q3BSPVERSION || i == Q3BSPVERSION_IG || i == Q3BSPVERSION_LIVE)
7048                 Mod_Q3BSP_Load(mod,buffer, bufferend);
7049         else if (i == Q2BSPVERSION)
7050                 Mod_Q2BSP_Load(mod,buffer, bufferend);
7051         else
7052                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
7053 }
7054
7055 void Mod_MAP_Load(dp_model_t *mod, void *buffer, void *bufferend)
7056 {
7057         Host_Error("Mod_MAP_Load: not yet implemented");
7058 }
7059
7060 #define OBJASMODEL
7061
7062 #ifdef OBJASMODEL
7063 typedef struct objvertex_s
7064 {
7065         int nextindex;
7066         int textureindex;
7067         float v[3];
7068         float vt[2];
7069         float vn[3];
7070 }
7071 objvertex_t;
7072
7073 void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
7074 {
7075         const char *textbase = (char *)buffer, *text = textbase;
7076         char *s;
7077         char *argv[512];
7078         char line[1024];
7079         char materialname[MAX_QPATH];
7080         int i, j, numvertices, firstvertex, firsttriangle, elementindex, vertexindex, numsurfaces, surfacevertices, surfacetriangles, surfaceelements;
7081         int index1, index2, index3;
7082         objvertex_t vfirst, vprev, vcurrent;
7083         int argc;
7084         int linelen;
7085         int numtriangles = 0;
7086         int maxtriangles = 0;
7087         objvertex_t *vertices = NULL;
7088         int linenumber = 0;
7089         int maxtextures = 0, numtextures = 0, textureindex = 0;
7090         int maxv = 0, numv = 1;
7091         int maxvt = 0, numvt = 1;
7092         int maxvn = 0, numvn = 1;
7093         char *texturenames = NULL;
7094         float dist, modelradius, modelyawradius;
7095         float *v = NULL;
7096         float *vt = NULL;
7097         float *vn = NULL;
7098         float mins[3];
7099         float maxs[3];
7100         objvertex_t *thisvertex = NULL;
7101         int vertexhashindex;
7102         int *vertexhashtable = NULL;
7103         objvertex_t *vertexhashdata = NULL;
7104         objvertex_t *vdata = NULL;
7105         int vertexhashsize = 0;
7106         int vertexhashcount = 0;
7107         skinfile_t *skinfiles = NULL;
7108         unsigned char *data = NULL;
7109
7110         memset(&vfirst, 0, sizeof(vfirst));
7111         memset(&vprev, 0, sizeof(vprev));
7112         memset(&vcurrent, 0, sizeof(vcurrent));
7113
7114         dpsnprintf(materialname, sizeof(materialname), "%s", loadmodel->name);
7115
7116         loadmodel->modeldatatypestring = "OBJ";
7117
7118         loadmodel->type = mod_obj;
7119         loadmodel->soundfromcenter = true;
7120         loadmodel->TraceBox = Mod_CollisionBIH_TraceBox;
7121         loadmodel->TraceLine = Mod_CollisionBIH_TraceLine;
7122         loadmodel->TracePoint = Mod_CollisionBIH_TracePoint_Mesh;
7123         loadmodel->PointSuperContents = Mod_CollisionBIH_PointSuperContents_Mesh;
7124         loadmodel->brush.TraceLineOfSight = NULL;
7125         loadmodel->brush.SuperContentsFromNativeContents = NULL;
7126         loadmodel->brush.NativeContentsFromSuperContents = NULL;
7127         loadmodel->brush.GetPVS = NULL;
7128         loadmodel->brush.FatPVS = NULL;
7129         loadmodel->brush.BoxTouchingPVS = NULL;
7130         loadmodel->brush.BoxTouchingLeafPVS = NULL;
7131         loadmodel->brush.BoxTouchingVisibleLeafs = NULL;
7132         loadmodel->brush.FindBoxClusters = NULL;
7133         loadmodel->brush.LightPoint = NULL;
7134         loadmodel->brush.FindNonSolidLocation = NULL;
7135         loadmodel->brush.AmbientSoundLevelsForPoint = NULL;
7136         loadmodel->brush.RoundUpToHullSize = NULL;
7137         loadmodel->brush.PointInLeaf = NULL;
7138         loadmodel->Draw = R_Q1BSP_Draw;
7139         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
7140         loadmodel->DrawDebug = R_Q1BSP_DrawDebug;
7141         loadmodel->DrawPrepass = R_Q1BSP_DrawPrepass;
7142         loadmodel->GetLightInfo = R_Q1BSP_GetLightInfo;
7143         loadmodel->CompileShadowMap = R_Q1BSP_CompileShadowMap;
7144         loadmodel->DrawShadowMap = R_Q1BSP_DrawShadowMap;
7145         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
7146         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
7147         loadmodel->DrawLight = R_Q1BSP_DrawLight;
7148
7149         skinfiles = Mod_LoadSkinFiles();
7150         if (loadmodel->numskins < 1)
7151                 loadmodel->numskins = 1;
7152
7153         // make skinscenes for the skins (no groups)
7154         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
7155         for (i = 0;i < loadmodel->numskins;i++)
7156         {
7157                 loadmodel->skinscenes[i].firstframe = i;
7158                 loadmodel->skinscenes[i].framecount = 1;
7159                 loadmodel->skinscenes[i].loop = true;
7160                 loadmodel->skinscenes[i].framerate = 10;
7161         }
7162
7163         VectorClear(mins);
7164         VectorClear(maxs);
7165
7166         // parse the OBJ text now
7167         for(;;)
7168         {
7169                 if (!*text)
7170                         break;
7171                 linenumber++;
7172                 linelen = 0;
7173                 for (linelen = 0;text[linelen] && text[linelen] != '\r' && text[linelen] != '\n';linelen++)
7174                         line[linelen] = text[linelen];
7175                 line[linelen] = 0;
7176                 for (argc = 0;argc < 4;argc++)
7177                         argv[argc] = "";
7178                 argc = 0;
7179                 s = line;
7180                 while (*s == ' ' || *s == '\t')
7181                         s++;
7182                 while (*s)
7183                 {
7184                         argv[argc++] = s;
7185                         while (*s > ' ')
7186                                 s++;
7187                         if (!*s)
7188                                 break;
7189                         *s++ = 0;
7190                         while (*s == ' ' || *s == '\t')
7191                                 s++;
7192                 }
7193                 text += linelen;
7194                 if (*text == '\r')
7195                         text++;
7196                 if (*text == '\n')
7197                         text++;
7198                 if (!argc)
7199                         continue;
7200                 if (argv[0][0] == '#')
7201                         continue;
7202                 if (!strcmp(argv[0], "v"))
7203                 {
7204                         if (maxv <= numv)
7205                         {
7206                                 maxv = max(maxv * 2, 1024);
7207                                 v = (float *)Mem_Realloc(tempmempool, v, maxv * sizeof(float[3]));
7208                         }
7209                         v[numv*3+0] = atof(argv[1]);
7210                         v[numv*3+2] = atof(argv[2]);
7211                         v[numv*3+1] = atof(argv[3]);
7212                         numv++;
7213                 }
7214                 else if (!strcmp(argv[0], "vt"))
7215                 {
7216                         if (maxvt <= numvt)
7217                         {
7218                                 maxvt = max(maxvt * 2, 1024);
7219                                 vt = (float *)Mem_Realloc(tempmempool, vt, maxvt * sizeof(float[2]));
7220                         }
7221                         vt[numvt*2+0] = atof(argv[1]);
7222                         vt[numvt*2+1] = 1-atof(argv[2]);
7223                         numvt++;
7224                 }
7225                 else if (!strcmp(argv[0], "vn"))
7226                 {
7227                         if (maxvn <= numvn)
7228                         {
7229                                 maxvn = max(maxvn * 2, 1024);
7230                                 vn = (float *)Mem_Realloc(tempmempool, vn, maxvn * sizeof(float[3]));
7231                         }
7232                         vn[numvn*3+0] = atof(argv[1]);
7233                         vn[numvn*3+2] = atof(argv[2]);
7234                         vn[numvn*3+1] = atof(argv[3]);
7235                         numvn++;
7236                 }
7237                 else if (!strcmp(argv[0], "f"))
7238                 {
7239                         if (!numtextures)
7240                         {
7241                                 if (maxtextures <= numtextures)
7242                                 {
7243                                         maxtextures = max(maxtextures * 2, 256);
7244                                         texturenames = (char *)Mem_Realloc(loadmodel->mempool, texturenames, maxtextures * MAX_QPATH);
7245                                 }
7246                                 textureindex = numtextures++;
7247                                 strlcpy(texturenames + textureindex*MAX_QPATH, loadmodel->name, MAX_QPATH);
7248                         }
7249                         for (j = 1;j < argc;j++)
7250                         {
7251                                 index1 = atoi(argv[j]);
7252                                 while(argv[j][0] && argv[j][0] != '/')
7253                                         argv[j]++;
7254                                 if (argv[j][0])
7255                                         argv[j]++;
7256                                 index2 = atoi(argv[j]);
7257                                 while(argv[j][0] && argv[j][0] != '/')
7258                                         argv[j]++;
7259                                 if (argv[j][0])
7260                                         argv[j]++;
7261                                 index3 = atoi(argv[j]);
7262                                 // negative refers to a recent vertex
7263                                 // zero means not specified
7264                                 // positive means an absolute vertex index
7265                                 if (index1 < 0)
7266                                         index1 = numv - index1;
7267                                 if (index2 < 0)
7268                                         index2 = numvt - index2;
7269                                 if (index3 < 0)
7270                                         index3 = numvn - index3;
7271                                 vcurrent.nextindex = -1;
7272                                 vcurrent.textureindex = textureindex;
7273                                 VectorCopy(v + 3*index1, vcurrent.v);
7274                                 Vector2Copy(vt + 2*index2, vcurrent.vt);
7275                                 VectorCopy(vn + 3*index3, vcurrent.vn);
7276                                 if (numtriangles == 0)
7277                                 {
7278                                         VectorCopy(vcurrent.v, mins);
7279                                         VectorCopy(vcurrent.v, maxs);
7280                                 }
7281                                 else
7282                                 {
7283                                         mins[0] = min(mins[0], vcurrent.v[0]);
7284                                         mins[1] = min(mins[1], vcurrent.v[1]);
7285                                         mins[2] = min(mins[2], vcurrent.v[2]);
7286                                         maxs[0] = max(maxs[0], vcurrent.v[0]);
7287                                         maxs[1] = max(maxs[1], vcurrent.v[1]);
7288                                         maxs[2] = max(maxs[2], vcurrent.v[2]);
7289                                 }
7290                                 if (j == 1)
7291                                         vfirst = vcurrent;
7292                                 else if (j >= 3)
7293                                 {
7294                                         if (maxtriangles <= numtriangles)
7295                                         {
7296                                                 maxtriangles = max(maxtriangles * 2, 32768);
7297                                                 vertices = (objvertex_t*)Mem_Realloc(loadmodel->mempool, vertices, maxtriangles * sizeof(objvertex_t[3]));
7298                                         }
7299                                         vertices[numtriangles*3+0] = vfirst;
7300                                         vertices[numtriangles*3+1] = vprev;
7301                                         vertices[numtriangles*3+2] = vcurrent;
7302                                         numtriangles++;
7303                                 }
7304                                 vprev = vcurrent;
7305                         }
7306                 }
7307                 else if (!strcmp(argv[0], "o") || !strcmp(argv[0], "g"))
7308                         ;
7309                 else if (!strcmp(argv[0], "usemtl"))
7310                 {
7311                         for (i = 0;i < numtextures;i++)
7312                                 if (!strcmp(texturenames+i*MAX_QPATH, argv[1]))
7313                                         break;
7314                         if (i < numtextures)
7315                                 textureindex = i;
7316                         else
7317                         {
7318                                 if (maxtextures <= numtextures)
7319                                 {
7320                                         maxtextures = max(maxtextures * 2, 256);
7321                                         texturenames = (char *)Mem_Realloc(loadmodel->mempool, texturenames, maxtextures * MAX_QPATH);
7322                                 }
7323                                 textureindex = numtextures++;
7324                                 strlcpy(texturenames + textureindex*MAX_QPATH, argv[1], MAX_QPATH);
7325                         }
7326                 }
7327         }
7328
7329         // now that we have the OBJ data loaded as-is, we can convert it
7330
7331         // copy the model bounds, then enlarge the yaw and rotated bounds according to radius
7332         VectorCopy(mins, loadmodel->normalmins);
7333         VectorCopy(maxs, loadmodel->normalmaxs);
7334         dist = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
7335         modelyawradius = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
7336         modelyawradius = dist*dist+modelyawradius*modelyawradius;
7337         modelradius = max(fabs(loadmodel->normalmins[2]), fabs(loadmodel->normalmaxs[2]));
7338         modelradius = modelyawradius + modelradius * modelradius;
7339         modelyawradius = sqrt(modelyawradius);
7340         modelradius = sqrt(modelradius);
7341         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -modelyawradius;
7342         loadmodel->yawmins[2] = loadmodel->normalmins[2];
7343         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] =  modelyawradius;
7344         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
7345         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -modelradius;
7346         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] =  modelradius;
7347         loadmodel->radius = modelradius;
7348         loadmodel->radius2 = modelradius * modelradius;
7349
7350         // allocate storage for triangles
7351         loadmodel->num_surfaces = loadmodel->nummodelsurfaces = numsurfaces = numtextures;
7352         loadmodel->surfmesh.data_element3i = Mem_Alloc(loadmodel->mempool, numtriangles * sizeof(int[3]));
7353         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t));
7354         // allocate vertex hash structures to build an optimal vertex subset
7355         vertexhashsize = numtriangles*2;
7356         vertexhashtable = Mem_Alloc(loadmodel->mempool, sizeof(int) * vertexhashsize);
7357         memset(vertexhashtable, 0xFF, sizeof(int) * vertexhashsize);
7358         vertexhashdata = Mem_Alloc(loadmodel->mempool, sizeof(*vertexhashdata) * numtriangles*3);
7359         vertexhashcount = 0;
7360
7361         // gather surface stats for assigning vertex/triangle ranges
7362         firstvertex = 0;
7363         firsttriangle = 0;
7364         elementindex = 0;
7365         for (textureindex = 0;textureindex < numtextures;textureindex++)
7366         {
7367                 msurface_t *surface = loadmodel->data_surfaces + textureindex;
7368                 // copy the mins/maxs of the model backwards so that the first vertex
7369                 // added will set the surface bounds to a point
7370                 VectorCopy(loadmodel->normalmaxs, surface->mins);
7371                 VectorCopy(loadmodel->normalmins, surface->maxs);
7372                 surfacevertices = 0;
7373                 surfaceelements = 0;
7374                 for (vertexindex = 0;vertexindex < numtriangles*3;vertexindex++)
7375                 {
7376                         thisvertex = vertices + vertexindex;
7377                         if (thisvertex->textureindex != textureindex)
7378                                 continue;
7379                         surface->mins[0] = min(surface->mins[0], thisvertex->v[0]);
7380                         surface->mins[1] = min(surface->mins[1], thisvertex->v[1]);
7381                         surface->mins[2] = min(surface->mins[2], thisvertex->v[2]);
7382                         surface->maxs[0] = max(surface->maxs[0], thisvertex->v[0]);
7383                         surface->maxs[1] = max(surface->maxs[1], thisvertex->v[1]);
7384                         surface->maxs[2] = max(surface->maxs[2], thisvertex->v[2]);
7385                         vertexhashindex = (unsigned int)(thisvertex->v[0] * 3571 + thisvertex->v[0] * 1777 + thisvertex->v[0] * 457) % (unsigned int)vertexhashsize;
7386                         for (i = vertexhashtable[vertexhashindex];i >= 0;i = vertexhashdata[i].nextindex)
7387                         {
7388                                 vdata = vertexhashdata + i;
7389                                 if (vdata->textureindex == thisvertex->textureindex && VectorCompare(thisvertex->v, vdata->v) && VectorCompare(thisvertex->vn, vdata->vn) && Vector2Compare(thisvertex->vt, vdata->vt))
7390                                         break;
7391                         }
7392                         if (i < 0)
7393                         {
7394                                 i = vertexhashcount++;
7395                                 vdata = vertexhashdata + i;
7396                                 *vdata = *thisvertex;
7397                                 vdata->nextindex = vertexhashtable[vertexhashindex];
7398                                 vertexhashtable[vertexhashindex] = i;
7399                                 surfacevertices++;
7400                         }
7401                         loadmodel->surfmesh.data_element3i[elementindex++] = i;
7402                         surfaceelements++;
7403                 }
7404                 surfacetriangles = surfaceelements / 3;
7405                 surface->num_vertices = surfacevertices;
7406                 surface->num_triangles = surfacetriangles;
7407                 surface->num_firstvertex = firstvertex;
7408                 surface->num_firsttriangle = firsttriangle;
7409                 firstvertex += surface->num_vertices;
7410                 firsttriangle += surface->num_triangles;
7411         }
7412         numvertices = firstvertex;
7413
7414         // allocate storage for final mesh data
7415         loadmodel->num_textures = numtextures * loadmodel->numskins;
7416         loadmodel->num_texturesperskin = numtextures;
7417         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, numsurfaces * sizeof(int) + numsurfaces * loadmodel->numskins * sizeof(texture_t) + numtriangles * sizeof(int[3]) + (numvertices <= 65536 ? numtriangles * sizeof(unsigned short[3]) : 0) + numvertices * sizeof(float[14]));
7418         loadmodel->sortedmodelsurfaces = (int *)data;data += numsurfaces * sizeof(int);
7419         loadmodel->data_textures = (texture_t *)data;data += numsurfaces * loadmodel->numskins * sizeof(texture_t);
7420         loadmodel->surfmesh.num_vertices = numvertices;
7421         loadmodel->surfmesh.num_triangles = numtriangles;
7422         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += numtriangles * sizeof(int[3]);
7423         loadmodel->surfmesh.data_vertex3f = (float *)data;data += numvertices * sizeof(float[3]);
7424         loadmodel->surfmesh.data_svector3f = (float *)data;data += numvertices * sizeof(float[3]);
7425         loadmodel->surfmesh.data_tvector3f = (float *)data;data += numvertices * sizeof(float[3]);
7426         loadmodel->surfmesh.data_normal3f = (float *)data;data += numvertices * sizeof(float[3]);
7427         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += numvertices * sizeof(float[2]);
7428         if (loadmodel->surfmesh.num_vertices <= 65536)
7429                 loadmodel->surfmesh.data_element3s = (unsigned short *)data;data += loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]);
7430
7431         for (j = 0;j < loadmodel->surfmesh.num_vertices;j++)
7432         {
7433                 VectorCopy(vertexhashdata[j].v, loadmodel->surfmesh.data_vertex3f + 3*j);
7434                 VectorCopy(vertexhashdata[j].vn, loadmodel->surfmesh.data_normal3f + 3*j);
7435                 Vector2Copy(vertexhashdata[j].vt, loadmodel->surfmesh.data_texcoordtexture2f + 2*j);
7436         }
7437
7438         // load the textures
7439         for (textureindex = 0;textureindex < numtextures;textureindex++)
7440                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures + textureindex, skinfiles, texturenames + textureindex*MAX_QPATH, texturenames + textureindex*MAX_QPATH);
7441         Mod_FreeSkinFiles(skinfiles);
7442
7443         // set the surface textures
7444         for (textureindex = 0;textureindex < numtextures;textureindex++)
7445         {
7446                 msurface_t *surface = loadmodel->data_surfaces + textureindex;
7447                 surface->texture = loadmodel->data_textures + textureindex;
7448         }
7449
7450         // free data
7451         Mem_Free(vertices);
7452         Mem_Free(texturenames);
7453         Mem_Free(v);
7454         Mem_Free(vt);
7455         Mem_Free(vn);
7456         Mem_Free(vertexhashtable);
7457         Mem_Free(vertexhashdata);
7458
7459         // compute all the mesh information that was not loaded from the file
7460         Mod_MakeSortedSurfaces(loadmodel);
7461         if (loadmodel->surfmesh.data_element3s)
7462                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
7463                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
7464         Mod_ValidateElements(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles, 0, loadmodel->surfmesh.num_vertices, __FILE__, __LINE__);
7465         // generate normals if the file did not have them
7466         if (!VectorLength2(loadmodel->surfmesh.data_normal3f))
7467                 Mod_BuildNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_normal3f, true);
7468         Mod_BuildTextureVectorsFromNormals(0, loadmodel->surfmesh.num_vertices, loadmodel->surfmesh.num_triangles, loadmodel->surfmesh.data_vertex3f, loadmodel->surfmesh.data_texcoordtexture2f, loadmodel->surfmesh.data_normal3f, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.data_svector3f, loadmodel->surfmesh.data_tvector3f, true);
7469         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
7470
7471         Mod_MakeCollisionBIH(loadmodel, true);
7472 }
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483 #else // OBJASMODEL
7484
7485 #ifdef OBJWORKS
7486 typedef struct objvertex_s
7487 {
7488         float v[3];
7489         float vt[2];
7490         float vn[3];
7491 }
7492 objvertex_t;
7493
7494 typedef struct objtriangle_s
7495 {
7496         objvertex_t vertex[3];
7497         int textureindex;
7498         // these fields are used only in conversion to surfaces
7499         int axis;
7500         int surfaceindex;
7501         int surfacevertexindex[3];
7502         float edgeplane[3][4];
7503 }
7504 objtriangle_t;
7505
7506 typedef objnode_s
7507 {
7508         struct objnode_s *children[2];
7509         struct objnode_s *parent;
7510         objtriangle_t *triangles;
7511         float normal[3];
7512         float dist;
7513         float mins[3];
7514         float maxs[3];
7515         int numtriangles;
7516 }
7517 objnode_t;
7518
7519 objnode_t *Mod_OBJ_BSPNodeForTriangles(objnode_t *parent, objtriangle_t *triangles, int numtriangles, const float *mins, const float *maxs, mem_expandablearray_t *nodesarray, int maxclippedtriangles, objtriangle_t *clippedfronttriangles, objtriangle_t *clippedbacktriangles)
7520 {
7521         int i, j;
7522         float normal[3];
7523         float dist;
7524         int score;
7525         float bestnormal[3];
7526         float bestdist;
7527         int bestscore;
7528         float mins[3];
7529         float maxs[3];
7530         int numfronttriangles;
7531         int numbacktriangles;
7532         int count_front;
7533         int count_back;
7534         int count_both;
7535         int count_on;
7536         float outfrontpoints[5][3];
7537         float outbackpoints[5][3];
7538         int neededfrontpoints;
7539         int neededbackpoints;
7540         int countonpoints;
7541         objnode_t *node;
7542
7543         node = (objnode_t *)Mem_ExpandableArray_AllocRecord(array);
7544         node->parent = parent;
7545         if (numtriangles)
7546         {
7547                 VectorCopy(triangles[0].vertex[0].v, mins);
7548                 VectorCopy(triangles[0].vertex[0].v, maxs);
7549         }
7550         else if (parent && parent->children[0] == node)
7551         {
7552                 VectorCopy(parent->mins, mins);
7553                 Vectorcopy(parent->maxs, maxs);
7554         }
7555         else if (parent && parent->children[1] == node)
7556         {
7557                 VectorCopy(parent->mins, mins);
7558                 Vectorcopy(parent->maxs, maxs);
7559         }
7560         else
7561         {
7562                 VectorClear(mins);
7563                 VectorClear(maxs);
7564         }
7565         for (i = 0;i < numtriangles;i++)
7566         {
7567                 for (j = 0;j < 3;j++)
7568                 {
7569                         mins[0] = min(mins[0], triangles[i].vertex[j].v[0]);
7570                         mins[1] = min(mins[1], triangles[i].vertex[j].v[1]);
7571                         mins[2] = min(mins[2], triangles[i].vertex[j].v[2]);
7572                         maxs[0] = max(maxs[0], triangles[i].vertex[j].v[0]);
7573                         maxs[1] = max(maxs[1], triangles[i].vertex[j].v[1]);
7574                         maxs[2] = max(maxs[2], triangles[i].vertex[j].v[2]);
7575                 }
7576         }
7577         VectorCopy(mins, node->mins);
7578         VectorCopy(maxs, node->maxs);
7579         if (numtriangles <= mod_obj_leaftriangles.integer)
7580         {
7581                 // create a leaf
7582                 loadmodel->brush.num_leafs++;
7583                 node->triangles = triangles;
7584                 node->numtriangles = numtriangles;
7585                 return node;
7586         }
7587
7588         // create a node
7589         loadmodel->brush.num_nodes++;
7590         // pick a splitting plane from the various choices available to us...
7591         // early splits simply halve the interval
7592         bestscore = 0;
7593         VectorClear(bestnormal);
7594         bestdist = 0;
7595         if (numtriangles <= mod_obj_splitterlimit.integer)
7596                 limit = numtriangles;
7597         else
7598                 limit = 0;
7599         for (i = -3;i < limit;i++)
7600         {
7601                 if (i < 0)
7602                 {
7603                         // first we try 3 axial splits (kdtree-like)
7604                         j = i + 3;
7605                         VectorClear(normal);
7606                         normal[j] = 1;
7607                         dist = (mins[j] + maxs[j]) * 0.5f;
7608                 }
7609                 else
7610                 {
7611                         // then we try each triangle plane
7612                         TriangleNormal(triangles[i].vertex[0].v, triangles[i].vertex[1].v, triangles[i].vertex[2].v, normal);
7613                         VectorNormalize(normal);
7614                         dist = DotProduct(normal, triangles[i].vertex[0].v);
7615                         // use positive axial values whenever possible
7616                         if (normal[0] == -1)
7617                                 normal[0] = 1;
7618                         if (normal[1] == -1)
7619                                 normal[1] = 1;
7620                         if (normal[2] == -1)
7621                                 normal[2] = 1;
7622                         // skip planes that match the current best
7623                         if (VectorCompare(normal, bestnormal) && dist == bestdist)
7624                                 continue;
7625                 }
7626                 count_on = 0;
7627                 count_front = 0;
7628                 count_back = 0;
7629                 count_both = 0;
7630                 for (j = 0;j < numtriangles;j++)
7631                 {
7632                         dists[0] = DotProduct(normal, triangles[j].vertex[0].v) - dist;
7633                         dists[1] = DotProduct(normal, triangles[j].vertex[1].v) - dist;
7634                         dists[2] = DotProduct(normal, triangles[j].vertex[2].v) - dist;
7635                         if (dists[0] < -DIST_EPSILON || dists[1] < -DIST_EPSILON || dists[2] < -DIST_EPSILON)
7636                         {
7637                                 if (dists[0] > DIST_EPSILON || dists[1] > DIST_EPSILON || dists[2] > DIST_EPSILON)
7638                                         count_both++;
7639                                 else
7640                                         count_back++;
7641                         }
7642                         else if (dists[0] > DIST_EPSILON || dists[1] > DIST_EPSILON || dists[2] > DIST_EPSILON)
7643                                 count_front++;
7644                         else
7645                                 count_on++;
7646                 }
7647                 // score is supposed to:
7648                 // prefer axial splits
7649                 // prefer evenly dividing the input triangles
7650                 // prefer triangles on the plane
7651                 // avoid triangles crossing the plane
7652                 score = count_on*count_on - count_both*count_both + min(count_front, count_back)*(count_front+count_back);
7653                 if (normal[0] == 1 || normal[1] == 1 || normal[2] == 1)
7654                         score *= 2;
7655                 if (i == -3 || bestscore < score)
7656                 {
7657                         VectorCopy(normal, bestnormal);
7658                         bestdist = dist;
7659                         bestscore = score;
7660                 }
7661         }
7662
7663         // now we have chosen an optimal split plane...
7664
7665         // divide triangles by the splitting plane
7666         numfronttriangles = 0;
7667         numbacktriangles = 0;
7668         for (i = 0;i < numtriangles;i++)
7669         {
7670                 neededfrontpoints = 0;
7671                 neededbackpoints = 0;
7672                 countonpoints = 0;
7673                 PolygonF_Divide(3, triangles[i].vertex[0].v, bestnormal[0], bestnormal[1], bestnormal[2], bestdist, DIST_EPSILON, 5, outfrontpoints[0], &neededfrontpoints, 5, outbackpoints[0], &neededbackpoints, &countonpoints);
7674                 if (countonpoints > 1)
7675                 {
7676                         // triangle lies on plane, assign it to one child only
7677                         TriangleNormal(triangles[i].vertex[0].v, triangles[i].vertex[1].v, triangles[i].vertex[2].v, normal);
7678                         if (DotProduct(bestnormal, normal) >= 0)
7679                         {
7680                                 // assign to front side child
7681                                 obj_fronttriangles[numfronttriangles++] = triangles[i];
7682                         }
7683                         else
7684                         {
7685                                 // assign to back side child
7686                                 obj_backtriangles[numbacktriangles++] = triangles[i];
7687                         }
7688                 }
7689                 else
7690                 {
7691                         // convert clipped polygons to triangles
7692                         for (j = 0;j < neededfrontpoints-2;j++)
7693                         {
7694                                 obj_fronttriangles[numfronttriangles] = triangles[i];
7695                                 VectorCopy(outfrontpoints[0], obj_fronttriangles[numfronttriangles].vertex[0].v);
7696                                 VectorCopy(outfrontpoints[j+1], obj_fronttriangles[numfronttriangles].vertex[1].v);
7697                                 VectorCopy(outfrontpoints[j+2], obj_fronttriangles[numfronttriangles].vertex[2].v);
7698                                 numfronttriangles++;
7699                         }
7700                         for (j = 0;j < neededbackpoints-2;j++)
7701                         {
7702                                 obj_backtriangles[numbacktriangles] = triangles[i];
7703                                 VectorCopy(outbackpoints[0], obj_backtriangles[numbacktriangles].vertex[0].v);
7704                                 VectorCopy(outbackpoints[j+1], obj_backtriangles[numbacktriangles].vertex[1].v);
7705                                 VectorCopy(outbackpoints[j+2], obj_backtriangles[numbacktriangles].vertex[2].v);
7706                                 numbacktriangles++;
7707                         }
7708                 }
7709         }
7710
7711         // now copy the triangles out of the big buffer
7712         if (numfronttriangles)
7713         {
7714                 fronttriangles = Mem_Alloc(loadmodel->mempool, fronttriangles * sizeof(*fronttriangles));
7715                 memcpy(fronttriangles, obj_fronttriangles, numfronttriangles * sizeof(*fronttriangles));
7716         }
7717         else
7718                 fronttriangles = NULL;
7719         if (numbacktriangles)
7720         {
7721                 backtriangles = Mem_Alloc(loadmodel->mempool, backtriangles * sizeof(*backtriangles));
7722                 memcpy(backtriangles, obj_backtriangles, numbacktriangles * sizeof(*backtriangles));
7723         }
7724         else
7725                 backtriangles = NULL;
7726
7727         // free the original triangles we were given
7728         if (triangles)
7729                 Mem_Free(triangles);
7730         triangles = NULL;
7731         numtriangles = 0;
7732
7733         // now create the children...
7734         node->children[0] = Mod_OBJ_BSPNodeForTriangles(node, fronttriangles, numfronttriangles, frontmins, frontmaxs, nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
7735         node->children[1] = Mod_OBJ_BSPNodeForTriangles(node, backtriangles, numbacktriangles, backmins, backmaxs, nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
7736         return node;
7737 }
7738
7739 void Mod_OBJ_SnapVertex(float *v)
7740 {
7741         int i;
7742         float a = mod_obj_vertexprecision.value;
7743         float b = 1.0f / a;
7744         v[0] -= floor(v[0] * a + 0.5f) * b;
7745         v[1] -= floor(v[1] * a + 0.5f) * b;
7746         v[2] -= floor(v[2] * a + 0.5f) * b;
7747 }
7748
7749 void Mod_OBJ_ConvertBSPNode(objnode_t *objnode, mnode_t *mnodeparent)
7750 {
7751         if (objnode->children[0])
7752         {
7753                 // convert to mnode_t
7754                 mnode_t *mnode = loadmodel->brush.data_nodes + loadmodel->brush.num_nodes++;
7755                 mnode->parent = mnodeparent;
7756                 mnode->plane = loadmodel->brush.data_planes + loadmodel->brush.num_planes++;
7757                 VectorCopy(objnode->normal, mnode->plane->normal);
7758                 mnode->plane->dist = objnode->dist;
7759                 PlaneClassify(mnode->plane);
7760                 VectorCopy(objnode->mins, mnode->mins);
7761                 VectorCopy(objnode->maxs, mnode->maxs);
7762                 // push combinedsupercontents up to the parent
7763                 if (mnodeparent)
7764                         mnodeparent->combinedsupercontents |= mnode->combinedsupercontents;
7765                 mnode->children[0] = Mod_OBJ_ConvertBSPNode(objnode->children[0], mnode);
7766                 mnode->children[1] = Mod_OBJ_ConvertBSPNode(objnode->children[1], mnode);
7767         }
7768         else
7769         {
7770                 // convert to mleaf_t
7771                 mleaf_t *mleaf = loadmodel->brush.data_leafs + loadmodel->brush.num_leafs++;
7772                 mleaf->parent = mnodeparent;
7773                 VectorCopy(objnode->mins, mleaf->mins);
7774                 VectorCopy(objnode->maxs, mleaf->maxs);
7775                 mleaf->clusterindex = loadmodel->brush.num_leafs - 1;
7776                 if (objnode->numtriangles)
7777                 {
7778                         objtriangle_t *triangles = objnode->triangles;
7779                         int numtriangles = objnode->numtriangles;
7780                         texture_t *texture;
7781                         float edge[3][3];
7782                         float normal[3];
7783                         objvertex_t vertex[3];
7784                         numsurfaces = 0;
7785                         maxsurfaces = numtriangles;
7786                         surfaces = NULL;
7787                         // calculate some more data on each triangle for surface gathering
7788                         for (i = 0;i < numtriangles;i++)
7789                         {
7790                                 triangle = triangles + i;
7791                                 texture = loadmodel->data_textures + triangle->textureindex;
7792                                 Mod_OBJ_SnapVertex(triangle->vertex[0].v);
7793                                 Mod_OBJ_SnapVertex(triangle->vertex[1].v);
7794                                 Mod_OBJ_SnapVertex(triangle->vertex[2].v);
7795                                 TriangleNormal(triangle->vertex[0].v, triangle->vertex[1].v, triangle->vertex[2].v, normal);
7796                                 axis = 0;
7797                                 if (fabs(normal[axis]) < fabs(normal[1]))
7798                                         axis = 1;
7799                                 if (fabs(normal[axis]) < fabs(normal[2]))
7800                                         axis = 2;
7801                                 VectorClear(normal);
7802                                 normal[axis] = 1;
7803                                 triangle->axis = axis;
7804                                 VectorSubtract(triangle->vertex[1].v, triangle->vertex[0].v, edge[0]);
7805                                 VectorSubtract(triangle->vertex[2].v, triangle->vertex[1].v, edge[1]);
7806                                 VectorSubtract(triangle->vertex[0].v, triangle->vertex[2].v, edge[2]);
7807                                 CrossProduct(edge[0], normal, triangle->edgeplane[0]);
7808                                 CrossProduct(edge[1], normal, triangle->edgeplane[1]);
7809                                 CrossProduct(edge[2], normal, triangle->edgeplane[2]);
7810                                 VectorNormalize(triangle->edgeplane[0]);
7811                                 VectorNormalize(triangle->edgeplane[1]);
7812                                 VectorNormalize(triangle->edgeplane[2]);
7813                                 triangle->edgeplane[0][3] = DotProduct(triangle->edgeplane[0], triangle->vertex[0].v);
7814                                 triangle->edgeplane[1][3] = DotProduct(triangle->edgeplane[1], triangle->vertex[1].v);
7815                                 triangle->edgeplane[2][3] = DotProduct(triangle->edgeplane[2], triangle->vertex[2].v);
7816                                 triangle->surfaceindex = 0;
7817                                 // add to the combined supercontents while we're here...
7818                                 mleaf->combinedsupercontents |= texture->supercontents;
7819                         }
7820                         surfaceindex = 1;
7821                         for (i = 0;i < numtriangles;i++)
7822                         {
7823                                 // skip already-assigned triangles
7824                                 if (triangles[i].surfaceindex)
7825                                         continue;
7826                                 texture = loadmodel->data_textures + triangles[i].textureindex;
7827                                 // assign a new surface to this triangle
7828                                 triangles[i].surfaceindex = surfaceindex++;
7829                                 axis = triangles[i].axis;
7830                                 numvertices = 3;
7831                                 // find the triangle's neighbors, this can take multiple passes
7832                                 retry = true;
7833                                 while (retry)
7834                                 {
7835                                         retry = false;
7836                                         for (j = i+1;j < numtriangles;j++)
7837                                         {
7838                                                 if (triangles[j].surfaceindex || triangles[j].axis != axis || triangles[j].texture != texture)
7839                                                         continue;
7840                                                 triangle = triangles + j;
7841                                                 for (k = i;k < j;k++)
7842                                                 {
7843                                                         if (triangles[k].surfaceindex != surfaceindex)
7844                                                                 continue;
7845                                                         if (VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[0].v)
7846                                                          || VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[1].v)
7847                                                          || VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[2].v)
7848                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[0].v)
7849                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[1].v)
7850                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[2].v)
7851                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[0].v)
7852                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[1].v)
7853                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[2].v))
7854                                                         {
7855                                                                 // shares a vertex position
7856                                                                 --- FIXME ---
7857                                                         }
7858                                                 }
7859                                                 for (k = 0;k < numvertices;k++)
7860                                                         if (!VectorCompare(vertex[k].v, triangles[j].vertex[0].v) || !VectorCompare(vertex[k].v, triangles[j].vertex[1].v) || !VectorCompare(vertex[k].v, triangles[j].vertex[2].v))
7861                                                                 break;
7862                                                 if (k == numvertices)
7863                                                         break; // not a neighbor
7864                                                 // this triangle is a neighbor and has the same axis and texture
7865                                                 // check now if it overlaps in lightmap projection space
7866                                                 triangles[j].surfaceindex;
7867                                                 if (triangles[j].
7868                                         }
7869                                 }
7870                                 //triangles[i].surfaceindex = surfaceindex++;
7871                                 for (surfaceindex = 0;surfaceindex < numsurfaces;surfaceindex++)
7872                                 {
7873                                         if (surfaces[surfaceindex].texture != texture)
7874                                                 continue;
7875                                         // check if any triangles already in this surface overlap in lightmap projection space
7876
7877                                         {
7878                                         }
7879                                         break;
7880                                 }
7881                         }
7882                         // let the collision code simply use the surfaces
7883                         mleaf->containscollisionsurfaces = mleaf->combinedsupercontents != 0;
7884                         mleaf->numleafsurfaces = ?;
7885                         mleaf->firstleafsurface = ?;
7886                 }
7887                 // push combinedsupercontents up to the parent
7888                 if (mnodeparent)
7889                         mnodeparent->combinedsupercontents |= mleaf->combinedsupercontents;
7890         }
7891 }
7892 #endif
7893
7894 void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
7895 {
7896 #ifdef OBJWORKS
7897         const char *textbase = (char *)buffer, *text = textbase;
7898         char *s;
7899         char *argv[512];
7900         char line[1024];
7901         char materialname[MAX_QPATH];
7902         int j, index1, index2, index3, first, prev, index;
7903         int argc;
7904         int linelen;
7905         int numtriangles = 0;
7906         int maxtriangles = 131072;
7907         objtriangle_t *triangles = Mem_Alloc(tempmempool, maxtriangles * sizeof(*triangles));
7908         int linenumber = 0;
7909         int maxtextures = 256, numtextures = 0, textureindex = 0;
7910         int maxv = 1024, numv = 0;
7911         int maxvt = 1024, numvt = 0;
7912         int maxvn = 1024, numvn = 0;
7913         char **texturenames;
7914         float *v = Mem_Alloc(tempmempool, maxv * sizeof(float[3]));
7915         float *vt = Mem_Alloc(tempmempool, maxvt * sizeof(float[2]));
7916         float *vn = Mem_Alloc(tempmempool, maxvn * sizeof(float[3]));
7917         objvertex_t vfirst, vprev, vcurrent;
7918         float mins[3];
7919         float maxs[3];
7920 #if 0
7921         int hashindex;
7922         int maxverthash = 65536, numverthash = 0;
7923         int numhashindex = 65536;
7924         struct objverthash_s
7925         {
7926                 struct objverthash_s *next;
7927                 int s;
7928                 int v;
7929                 int vt;
7930                 int vn;
7931         }
7932         *hash, **verthash = Mem_Alloc(tempmempool, numhashindex * sizeof(*verthash)), *verthashdata = Mem_Alloc(tempmempool, maxverthash * sizeof(*verthashdata)), *oldverthashdata;
7933 #endif
7934
7935         dpsnprintf(materialname, sizeof(materialname), "%s", loadmodel->name);
7936
7937         loadmodel->modeldatatypestring = "OBJ";
7938
7939         loadmodel->type = mod_obj;
7940         loadmodel->soundfromcenter = true;
7941         loadmodel->TraceBox = Mod_OBJ_TraceBox;
7942         loadmodel->TraceLine = Mod_OBJ_TraceLine;
7943         loadmodel->TracePoint = Mod_OBJ_TracePoint;
7944         loadmodel->PointSuperContents = Mod_OBJ_PointSuperContents;
7945         loadmodel->brush.TraceLineOfSight = Mod_OBJ_TraceLineOfSight;
7946         loadmodel->brush.SuperContentsFromNativeContents = Mod_OBJ_SuperContentsFromNativeContents;
7947         loadmodel->brush.NativeContentsFromSuperContents = Mod_OBJ_NativeContentsFromSuperContents;
7948         loadmodel->brush.GetPVS = Mod_OBJ_GetPVS;
7949         loadmodel->brush.FatPVS = Mod_OBJ_FatPVS;
7950         loadmodel->brush.BoxTouchingPVS = Mod_OBJ_BoxTouchingPVS;
7951         loadmodel->brush.BoxTouchingLeafPVS = Mod_OBJ_BoxTouchingLeafPVS;
7952         loadmodel->brush.BoxTouchingVisibleLeafs = Mod_OBJ_BoxTouchingVisibleLeafs;
7953         loadmodel->brush.FindBoxClusters = Mod_OBJ_FindBoxClusters;
7954         loadmodel->brush.LightPoint = Mod_OBJ_LightPoint;
7955         loadmodel->brush.FindNonSolidLocation = Mod_OBJ_FindNonSolidLocation;
7956         loadmodel->brush.AmbientSoundLevelsForPoint = NULL;
7957         loadmodel->brush.RoundUpToHullSize = NULL;
7958         loadmodel->brush.PointInLeaf = Mod_OBJ_PointInLeaf;
7959         loadmodel->Draw = R_Q1BSP_Draw;
7960         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
7961         loadmodel->DrawDebug = R_Q1BSP_DrawDebug;
7962         loadmodel->DrawPrepass = R_Q1BSP_DrawPrepass;
7963         loadmodel->GetLightInfo = R_Q1BSP_GetLightInfo;
7964         loadmodel->CompileShadowMap = R_Q1BSP_CompileShadowMap;
7965         loadmodel->DrawShadowMap = R_Q1BSP_DrawShadowMap;
7966         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
7967         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
7968         loadmodel->DrawLight = R_Q1BSP_DrawLight;
7969
7970         VectorClear(mins);
7971         VectorClear(maxs);
7972
7973         // parse the OBJ text now
7974         for(;;)
7975         {
7976                 if (!*text)
7977                         break;
7978                 linenumber++;
7979                 linelen = 0;
7980                 for (linelen = 0;text[linelen] && text[linelen] != '\r' && text[linelen] != '\n';linelen++)
7981                         line[linelen] = text[linelen];
7982                 line[linelen] = 0;
7983                 for (argc = 0;argc < (int)(sizeof(argv)/sizeof(argv[0]));argc++)
7984                         argv[argc] = "";
7985                 argc = 0;
7986                 s = line;
7987                 while (*s == ' ' || *s == '\t')
7988                         s++;
7989                 while (*s)
7990                 {
7991                         argv[argc++] = s;
7992                         while (*s > ' ')
7993                                 s++;
7994                         if (!*s)
7995                                 break;
7996                         *s++ = 0;
7997                         while (*s == ' ' || *s == '\t')
7998                                 s++;
7999                 }
8000                 if (!argc)
8001                         continue;
8002                 if (argv[0][0] == '#')
8003                         continue;
8004                 if (!strcmp(argv[0], "v"))
8005                 {
8006                         if (maxv <= numv)
8007                         {
8008                                 float *oldv = v;
8009                                 maxv *= 2;
8010                                 v = Mem_Alloc(tempmempool, maxv * sizeof(float[3]));
8011                                 if (oldv)
8012                                 {
8013                                         memcpy(v, oldv, numv * sizeof(float[3]));
8014                                         Mem_Free(oldv);
8015                                 }
8016                         }
8017                         v[numv*3+0] = atof(argv[1]);
8018                         v[numv*3+1] = atof(argv[2]);
8019                         v[numv*3+2] = atof(argv[3]);
8020                         numv++;
8021                 }
8022                 else if (!strcmp(argv[0], "vt"))
8023                 {
8024                         if (maxvt <= numvt)
8025                         {
8026                                 float *oldvt = vt;
8027                                 maxvt *= 2;
8028                                 vt = Mem_Alloc(tempmempool, maxvt * sizeof(float[2]));
8029                                 if (oldvt)
8030                                 {
8031                                         memcpy(vt, oldvt, numvt * sizeof(float[2]));
8032                                         Mem_Free(oldvt);
8033                                 }
8034                         }
8035                         vt[numvt*2+0] = atof(argv[1]);
8036                         vt[numvt*2+1] = atof(argv[2]);
8037                         numvt++;
8038                 }
8039                 else if (!strcmp(argv[0], "vn"))
8040                 {
8041                         if (maxvn <= numvn)
8042                         {
8043                                 float *oldvn = vn;
8044                                 maxvn *= 2;
8045                                 vn = Mem_Alloc(tempmempool, maxvn * sizeof(float[3]));
8046                                 if (oldvn)
8047                                 {
8048                                         memcpy(vn, oldvn, numvn * sizeof(float[3]));
8049                                         Mem_Free(oldvn);
8050                                 }
8051                         }
8052                         vn[numvn*3+0] = atof(argv[1]);
8053                         vn[numvn*3+1] = atof(argv[2]);
8054                         vn[numvn*3+2] = atof(argv[3]);
8055                         numvn++;
8056                 }
8057                 else if (!strcmp(argv[0], "f"))
8058                 {
8059                         for (j = 1;j < argc;j++)
8060                         {
8061                                 index1 = atoi(argv[j]);
8062                                 while(argv[j][0] && argv[j][0] != '/')
8063                                         argv[j]++;
8064                                 if (argv[j][0])
8065                                         argv[j]++;
8066                                 index2 = atoi(argv[j]);
8067                                 while(argv[j][0] && argv[j][0] != '/')
8068                                         argv[j]++;
8069                                 if (argv[j][0])
8070                                         argv[j]++;
8071                                 index3 = atoi(argv[j]);
8072                                 // negative refers to a recent vertex
8073                                 // zero means not specified
8074                                 // positive means an absolute vertex index
8075                                 if (index1 < 0)
8076                                         index1 = numv - index1;
8077                                 if (index2 < 0)
8078                                         index2 = numvt - index2;
8079                                 if (index3 < 0)
8080                                         index3 = numvn - index3;
8081                                 VectorCopy(v + 3*index1, vcurrent.v);
8082                                 Vector2Copy(vt + 2*index2, vcurrent.vt);
8083                                 VectorCopy(vn + 3*index3, vcurrent.vn);
8084                                 if (numtriangles == 0)
8085                                 {
8086                                         VectorCopy(vcurrent.v, mins);
8087                                         VectorCopy(vcurrent.v, maxs);
8088                                 }
8089                                 else
8090                                 {
8091                                         mins[0] = min(mins[0], vcurrent.v[0]);
8092                                         mins[1] = min(mins[1], vcurrent.v[1]);
8093                                         mins[2] = min(mins[2], vcurrent.v[2]);
8094                                         maxs[0] = max(maxs[0], vcurrent.v[0]);
8095                                         maxs[1] = max(maxs[1], vcurrent.v[1]);
8096                                         maxs[2] = max(maxs[2], vcurrent.v[2]);
8097                                 }
8098                                 if (j == 1)
8099                                         vfirst = vcurrent;
8100                                 else if (j >= 3)
8101                                 {
8102                                         if (maxtriangles <= numtriangles)
8103                                         {
8104                                                 objtriangle_t *oldtriangles = triangles;
8105                                                 maxtriangles *= 2;
8106                                                 triangles = Mem_Alloc(tempmempool, maxtriangles * sizeof(*triangles));
8107                                                 if (oldtriangles)
8108                                                 {
8109                                                         memcpy(triangles, oldtriangles, maxtriangles * sizeof(*triangles));
8110                                                         Mem_Free(oldtriangles);
8111                                                 }
8112                                         }
8113                                         triangles[numtriangles].textureindex = textureindex;
8114                                         triangles[numtriangles].vertex[0] = vfirst;
8115                                         triangles[numtriangles].vertex[1] = vprev;
8116                                         triangles[numtriangles].vertex[2] = vcurrent;
8117                                         numtriangles++;
8118                                 }
8119                                 vprev = vcurrent;
8120                                 prev = index;
8121                         }
8122                 }
8123                 else if (!strcmp(argv[0], "o") || !strcmp(argv[0], "g"))
8124                         ;
8125                 else if (!!strcmp(argv[0], "usemtl"))
8126                 {
8127                         for (i = 0;i < numtextures;i++)
8128                                 if (!strcmp(texturenames[numtextures], argv[1]))
8129                                         break;
8130                         if (i < numtextures)
8131                                 texture = textures + i;
8132                         else
8133                         {
8134                                 if (maxtextures <= numtextures)
8135                                 {
8136                                         texture_t *oldtextures = textures;
8137                                         maxtextures *= 2;
8138                                         textures = Mem_Alloc(tempmempool, maxtextures * sizeof(*textures));
8139                                         if (oldtextures)
8140                                         {
8141                                                 memcpy(textures, oldtextures, numtextures * sizeof(*textures));
8142                                                 Mem_Free(oldtextures);
8143                                         }
8144                                 }
8145                                 textureindex = numtextures++;
8146                                 texturenames[textureindex] = Mem_Alloc(tempmempool, strlen(argv[1]) + 1);
8147                                 memcpy(texturenames[textureindex], argv[1], strlen(argv[1]) + 1);
8148                         }
8149                 }
8150                 text += linelen;
8151                 if (*text == '\r')
8152                         text++;
8153                 if (*text == '\n')
8154                         text++;
8155         }
8156
8157         // now that we have the OBJ data loaded as-is, we can convert it
8158
8159         // load the textures
8160         loadmodel->num_textures = numtextures;
8161         loadmodel->data_textures = Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
8162         for (i = 0;i < numtextures;i++)
8163                 Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, texturenames[i], true, true, TEXF_MIPMAP | TEXF_ALPHA | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
8164
8165         // free the texturenames array since we are now done with it
8166         for (i = 0;i < numtextures;i++)
8167         {
8168                 Mem_Free(texturenames[i]);
8169                 texturenames[i] = NULL;
8170         }
8171         Mem_Free(texturenames);
8172         texturenames = NULL;
8173
8174         // copy the model bounds, then enlarge the yaw and rotated bounds according to radius
8175         VectorCopy(mins, loadmodel->normalmins);
8176         VectorCopy(maxs, loadmodel->normalmaxs);
8177         dist = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
8178         modelyawradius = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
8179         modelyawradius = dist*dist+modelyawradius*modelyawradius;
8180         modelradius = max(fabs(loadmodel->normalmins[2]), fabs(loadmodel->normalmaxs[2]));
8181         modelradius = modelyawradius + modelradius * modelradius;
8182         modelyawradius = sqrt(modelyawradius);
8183         modelradius = sqrt(modelradius);
8184         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -modelyawradius;
8185         loadmodel->yawmins[2] = loadmodel->normalmins[2];
8186         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] =  modelyawradius;
8187         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
8188         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -modelradius;
8189         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] =  modelradius;
8190         loadmodel->radius = modelradius;
8191         loadmodel->radius2 = modelradius * modelradius;
8192
8193         // make sure the temp triangle buffer is big enough for BSP building
8194         maxclippedtriangles = numtriangles*4;
8195         if (numtriangles > 0)
8196         {
8197                 clippedfronttriangles = Mem_Alloc(loadmodel->mempool, maxclippedtriangles * 2 * sizeof(objtriangle_t));
8198                 clippedbacktriangles = clippedfronttriangles + maxclippedtriangles;
8199         }
8200
8201         // generate a rough BSP tree from triangle data, we don't have to be too careful here, it only has to define the basic areas of the map
8202         loadmodel->brush.num_leafs = 0;
8203         loadmodel->brush.num_nodes = 0;
8204         Mem_ExpandableArray_NewArray(&nodesarray, loadmodel->mempool, sizeof(objnode_t), 1024);
8205         rootnode = Mod_OBJ_BSPNodeForTriangles(triangles, numtriangles, mins, maxs, &nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
8206
8207         // convert the BSP tree to mnode_t and mleaf_t structures and convert the triangles to msurface_t...
8208         loadmodel->brush.data_leafs = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafs * sizeof(mleaf_t));
8209         loadmodel->brush.data_nodes = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(mnode_t));
8210         loadmodel->brush.data_planes = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(mplane_t));
8211         loadmodel->brush.num_leafs = 0;
8212         loadmodel->brush.num_nodes = 0;
8213         loadmodel->brush.num_planes = 0;
8214         Mod_OBJ_ConvertAndFreeBSPNode(rootnode);
8215
8216         if (clippedfronttriangles)
8217                 Mem_Free(clippedfronttriangles);
8218         maxclippedtriangles = 0;
8219         clippedfronttriangles = NULL;
8220         clippedbacktriangles = NULL;
8221
8222 --- NOTHING DONE PAST THIS POINT ---
8223
8224         loadmodel->numskins = LittleLong(pinmodel->num_skins);
8225         numxyz = LittleLong(pinmodel->num_xyz);
8226         numst = LittleLong(pinmodel->num_st);
8227         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
8228         loadmodel->numframes = LittleLong(pinmodel->num_frames);
8229         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
8230         loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
8231         skinwidth = LittleLong(pinmodel->skinwidth);
8232         skinheight = LittleLong(pinmodel->skinheight);
8233         iskinwidth = 1.0f / skinwidth;
8234         iskinheight = 1.0f / skinheight;
8235
8236         loadmodel->num_surfaces = 1;
8237         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
8238         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * sizeof(msurface_t) + loadmodel->num_surfaces * sizeof(int) + loadmodel->numframes * sizeof(animscene_t) + loadmodel->numframes * sizeof(float[6]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]) + loadmodel->surfmesh.num_triangles * sizeof(int[3]));
8239         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
8240         loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
8241         loadmodel->sortedmodelsurfaces[0] = 0;
8242         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
8243         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
8244         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
8245         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
8246
8247         loadmodel->synctype = ST_RAND;
8248
8249         // load the skins
8250         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
8251         skinfiles = Mod_LoadSkinFiles();
8252         if (skinfiles)
8253         {
8254                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
8255                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
8256                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
8257                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
8258                 Mod_FreeSkinFiles(skinfiles);
8259         }
8260         else if (loadmodel->numskins)
8261         {
8262                 // skins found (most likely not a player model)
8263                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
8264                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
8265                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
8266                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
8267                         Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i * loadmodel->num_surfaces, inskin, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PICMIP | TEXF_COMPRESS);
8268         }
8269         else
8270         {
8271                 // no skins (most likely a player model)
8272                 loadmodel->numskins = 1;
8273                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
8274                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
8275                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
8276                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
8277         }
8278
8279         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
8280         for (i = 0;i < loadmodel->numskins;i++)
8281         {
8282                 loadmodel->skinscenes[i].firstframe = i;
8283                 loadmodel->skinscenes[i].framecount = 1;
8284                 loadmodel->skinscenes[i].loop = true;
8285                 loadmodel->skinscenes[i].framerate = 10;
8286         }
8287
8288         // load the triangles and stvert data
8289         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
8290         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
8291         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
8292         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
8293         // swap the triangle list
8294         loadmodel->surfmesh.num_vertices = 0;
8295         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
8296         {
8297                 for (j = 0;j < 3;j++)
8298                 {
8299                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
8300                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
8301                         if (xyz >= numxyz)
8302                         {
8303                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
8304                                 xyz = 0;
8305                         }
8306                         if (st >= numst)
8307                         {
8308                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
8309                                 st = 0;
8310                         }
8311                         hashindex = (xyz * 256 + st) & 65535;
8312                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
8313                                 if (hash->xyz == xyz && hash->st == st)
8314                                         break;
8315                         if (hash == NULL)
8316                         {
8317                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
8318                                 hash->xyz = xyz;
8319                                 hash->st = st;
8320                                 hash->next = md2verthash[hashindex];
8321                                 md2verthash[hashindex] = hash;
8322                         }
8323                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
8324                 }
8325         }
8326
8327         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
8328         data = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(float[2]) + loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t));
8329         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
8330         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
8331         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
8332         {
8333                 int sts, stt;
8334                 hash = md2verthashdata + i;
8335                 vertremap[i] = hash->xyz;
8336                 sts = LittleShort(inst[hash->st*2+0]);
8337                 stt = LittleShort(inst[hash->st*2+1]);
8338                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
8339                 {
8340                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
8341                         sts = 0;
8342                         stt = 0;
8343                 }
8344                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
8345                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
8346         }
8347
8348         Mem_Free(md2verthash);
8349         Mem_Free(md2verthashdata);
8350
8351         // generate ushort elements array if possible
8352         if (loadmodel->surfmesh.num_vertices <= 65536)
8353                 loadmodel->surfmesh.data_element3s = (unsigned short *)Mem_Alloc(loadmodel->mempool, sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles);
8354
8355         // load the frames
8356         datapointer = (base + LittleLong(pinmodel->ofs_frames));
8357         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
8358         {
8359                 int k;
8360                 trivertx_t *v;
8361                 trivertx_t *out;
8362                 pinframe = (md2frame_t *)datapointer;
8363                 datapointer += sizeof(md2frame_t);
8364                 // store the frame scale/translate into the appropriate array
8365                 for (j = 0;j < 3;j++)
8366                 {
8367                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
8368                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
8369                 }
8370                 // convert the vertices
8371                 v = (trivertx_t *)datapointer;
8372                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
8373                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
8374                         out[k] = v[vertremap[k]];
8375                 datapointer += numxyz * sizeof(trivertx_t);
8376
8377                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
8378                 loadmodel->animscenes[i].firstframe = i;
8379                 loadmodel->animscenes[i].framecount = 1;
8380                 loadmodel->animscenes[i].framerate = 10;
8381                 loadmodel->animscenes[i].loop = true;
8382         }
8383
8384         Mem_Free(vertremap);
8385
8386         Mod_MakeSortedSurfaces(loadmodel);
8387         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
8388         Mod_Alias_CalculateBoundingBox();
8389         Mod_Alias_MorphMesh_CompileFrames();
8390
8391         surface = loadmodel->data_surfaces;
8392         surface->texture = loadmodel->data_textures;
8393         surface->num_firsttriangle = 0;
8394         surface->num_triangles = loadmodel->surfmesh.num_triangles;
8395         surface->num_firstvertex = 0;
8396         surface->num_vertices = loadmodel->surfmesh.num_vertices;
8397
8398         loadmodel->surfmesh.isanimated = false;
8399
8400         if (loadmodel->surfmesh.data_element3s)
8401                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
8402                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
8403 #endif
8404 }
8405 #endif // !OBJASMODEL
8406
8407 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, dp_model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
8408 {
8409         // we already have done PVS culling at this point...
8410         // so we don't need to do it again.
8411
8412         int i;
8413         vec3_t testorigin, mins, maxs;
8414
8415         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
8416         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
8417         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
8418
8419         if(model->brush.TraceLineOfSight(model, eye, testorigin))
8420                 return 1;
8421
8422         // expand the box a little
8423         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
8424         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
8425         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
8426         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
8427         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
8428         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
8429
8430         for(i = 0; i != numsamples; ++i)
8431         {
8432                 testorigin[0] = lhrandom(mins[0], maxs[0]);
8433                 testorigin[1] = lhrandom(mins[1], maxs[1]);
8434                 testorigin[2] = lhrandom(mins[2], maxs[2]);
8435
8436                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
8437                         return 1;
8438         }
8439
8440         return 0;
8441 }
8442