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
  50 static texture_t mod_q1bsp_texture_solid;
  51 static texture_t mod_q1bsp_texture_sky;
  52 static texture_t mod_q1bsp_texture_lava;
  53 static texture_t mod_q1bsp_texture_slime;
  54 static texture_t mod_q1bsp_texture_water;
  55
  56 void Mod_BrushInit(void)
  57 {
  58 //      Cvar_RegisterVariable(&r_subdivide_size);
  59         Cvar_RegisterVariable(&r_novis);
  60         Cvar_RegisterVariable(&r_picmipworld);
  61         Cvar_RegisterVariable(&r_nosurftextures);
  62         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  63         Cvar_RegisterVariable(&r_subdivisions_mintess);
  64         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  65         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  69         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  70         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  71         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions_stride);
  72         Cvar_RegisterVariable(&mod_q3bsp_curves_stride);
  73         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  74         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  75         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  76         Cvar_RegisterVariable(&mod_q3bsp_nolightmaps);
  77         Cvar_RegisterVariable(&mod_q3bsp_tracelineofsight_brushes);
  78
  79         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  80         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  81         mod_q1bsp_texture_solid.surfaceflags = 0;
  82         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  83
  84         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  85         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  86         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  87         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  88
  89         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  90         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  91         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  92         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  93
  94         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  95         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  96         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  97         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  98
  99         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
 100         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
 101         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 102         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 103 }
 104
 105 static mleaf_t *Mod_Q1BSP_PointInLeaf(dp_model_t *model, const vec3_t p)
 106 {
 107         mnode_t *node;
 108
 109         if (model == NULL)
 110                 return NULL;
 111
 112         // LordHavoc: modified to start at first clip node,
 113         // in other words: first node of the (sub)model
 114         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 115         while (node->plane)
 116                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 117
 118         return (mleaf_t *)node;
 119 }
 120
 121 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(dp_model_t *model, const vec3_t p, unsigned char *out, int outsize)
 122 {
 123         int i;
 124         mleaf_t *leaf;
 125         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 126         if (leaf)
 127         {
 128                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 129                 if (i)
 130                 {
 131                         memcpy(out, leaf->ambient_sound_level, i);
 132                         out += i;
 133                         outsize -= i;
 134                 }
 135         }
 136         if (outsize)
 137                 memset(out, 0, outsize);
 138 }
 139
 140 static int Mod_Q1BSP_FindBoxClusters(dp_model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 141 {
 142         int numclusters = 0;
 143         int nodestackindex = 0;
 144         mnode_t *node, *nodestack[1024];
 145         if (!model->brush.num_pvsclusters)
 146                 return -1;
 147         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 148         for (;;)
 149         {
 150 #if 1
 151                 if (node->plane)
 152                 {
 153                         // node - recurse down the BSP tree
 154                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 155                         if (sides < 3)
 156                         {
 157                                 if (sides == 0)
 158                                         return -1; // ERROR: NAN bounding box!
 159                                 // box is on one side of plane, take that path
 160                                 node = node->children[sides-1];
 161                         }
 162                         else
 163                         {
 164                                 // box crosses plane, take one path and remember the other
 165                                 if (nodestackindex < 1024)
 166                                         nodestack[nodestackindex++] = node->children[0];
 167                                 node = node->children[1];
 168                         }
 169                         continue;
 170                 }
 171                 else
 172                 {
 173                         // leaf - add clusterindex to list
 174                         if (numclusters < maxclusters)
 175                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 176                         numclusters++;
 177                 }
 178 #else
 179                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 180                 {
 181                         if (node->plane)
 182                         {
 183                                 if (nodestackindex < 1024)
 184                                         nodestack[nodestackindex++] = node->children[0];
 185                                 node = node->children[1];
 186                                 continue;
 187                         }
 188                         else
 189                         {
 190                                 // leaf - add clusterindex to list
 191                                 if (numclusters < maxclusters)
 192                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 193                                 numclusters++;
 194                         }
 195                 }
 196 #endif
 197                 // try another path we didn't take earlier
 198                 if (nodestackindex == 0)
 199                         break;
 200                 node = nodestack[--nodestackindex];
 201         }
 202         // return number of clusters found (even if more than the maxclusters)
 203         return numclusters;
 204 }
 205
 206 static int Mod_Q1BSP_BoxTouchingPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 207 {
 208         int nodestackindex = 0;
 209         mnode_t *node, *nodestack[1024];
 210         if (!model->brush.num_pvsclusters)
 211                 return true;
 212         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 213         for (;;)
 214         {
 215 #if 1
 216                 if (node->plane)
 217                 {
 218                         // node - recurse down the BSP tree
 219                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 220                         if (sides < 3)
 221                         {
 222                                 if (sides == 0)
 223                                         return -1; // ERROR: NAN bounding box!
 224                                 // box is on one side of plane, take that path
 225                                 node = node->children[sides-1];
 226                         }
 227                         else
 228                         {
 229                                 // box crosses plane, take one path and remember the other
 230                                 if (nodestackindex < 1024)
 231                                         nodestack[nodestackindex++] = node->children[0];
 232                                 node = node->children[1];
 233                         }
 234                         continue;
 235                 }
 236                 else
 237                 {
 238                         // leaf - check cluster bit
 239                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 240                         if (CHECKPVSBIT(pvs, clusterindex))
 241                         {
 242                                 // it is visible, return immediately with the news
 243                                 return true;
 244                         }
 245                 }
 246 #else
 247                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 248                 {
 249                         if (node->plane)
 250                         {
 251                                 if (nodestackindex < 1024)
 252                                         nodestack[nodestackindex++] = node->children[0];
 253                                 node = node->children[1];
 254                                 continue;
 255                         }
 256                         else
 257                         {
 258                                 // leaf - check cluster bit
 259                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 260                                 if (CHECKPVSBIT(pvs, clusterindex))
 261                                 {
 262                                         // it is visible, return immediately with the news
 263                                         return true;
 264                                 }
 265                         }
 266                 }
 267 #endif
 268                 // nothing to see here, try another path we didn't take earlier
 269                 if (nodestackindex == 0)
 270                         break;
 271                 node = nodestack[--nodestackindex];
 272         }
 273         // it is not visible
 274         return false;
 275 }
 276
 277 static int Mod_Q1BSP_BoxTouchingLeafPVS(dp_model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 278 {
 279         int nodestackindex = 0;
 280         mnode_t *node, *nodestack[1024];
 281         if (!model->brush.num_leafs)
 282                 return true;
 283         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 284         for (;;)
 285         {
 286 #if 1
 287                 if (node->plane)
 288                 {
 289                         // node - recurse down the BSP tree
 290                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 291                         if (sides < 3)
 292                         {
 293                                 if (sides == 0)
 294                                         return -1; // ERROR: NAN bounding box!
 295                                 // box is on one side of plane, take that path
 296                                 node = node->children[sides-1];
 297                         }
 298                         else
 299                         {
 300                                 // box crosses plane, take one path and remember the other
 301                                 if (nodestackindex < 1024)
 302                                         nodestack[nodestackindex++] = node->children[0];
 303                                 node = node->children[1];
 304                         }
 305                         continue;
 306                 }
 307                 else
 308                 {
 309                         // leaf - check cluster bit
 310                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 311                         if (CHECKPVSBIT(pvs, clusterindex))
 312                         {
 313                                 // it is visible, return immediately with the news
 314                                 return true;
 315                         }
 316                 }
 317 #else
 318                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 319                 {
 320                         if (node->plane)
 321                         {
 322                                 if (nodestackindex < 1024)
 323                                         nodestack[nodestackindex++] = node->children[0];
 324                                 node = node->children[1];
 325                                 continue;
 326                         }
 327                         else
 328                         {
 329                                 // leaf - check cluster bit
 330                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 331                                 if (CHECKPVSBIT(pvs, clusterindex))
 332                                 {
 333                                         // it is visible, return immediately with the news
 334                                         return true;
 335                                 }
 336                         }
 337                 }
 338 #endif
 339                 // nothing to see here, try another path we didn't take earlier
 340                 if (nodestackindex == 0)
 341                         break;
 342                 node = nodestack[--nodestackindex];
 343         }
 344         // it is not visible
 345         return false;
 346 }
 347
 348 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(dp_model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 349 {
 350         int nodestackindex = 0;
 351         mnode_t *node, *nodestack[1024];
 352         if (!model->brush.num_leafs)
 353                 return true;
 354         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 355         for (;;)
 356         {
 357 #if 1
 358                 if (node->plane)
 359                 {
 360                         // node - recurse down the BSP tree
 361                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 362                         if (sides < 3)
 363                         {
 364                                 if (sides == 0)
 365                                         return -1; // ERROR: NAN bounding box!
 366                                 // box is on one side of plane, take that path
 367                                 node = node->children[sides-1];
 368                         }
 369                         else
 370                         {
 371                                 // box crosses plane, take one path and remember the other
 372                                 if (nodestackindex < 1024)
 373                                         nodestack[nodestackindex++] = node->children[0];
 374                                 node = node->children[1];
 375                         }
 376                         continue;
 377                 }
 378                 else
 379                 {
 380                         // leaf - check if it is visible
 381                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 382                         {
 383                                 // it is visible, return immediately with the news
 384                                 return true;
 385                         }
 386                 }
 387 #else
 388                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 389                 {
 390                         if (node->plane)
 391                         {
 392                                 if (nodestackindex < 1024)
 393                                         nodestack[nodestackindex++] = node->children[0];
 394                                 node = node->children[1];
 395                                 continue;
 396                         }
 397                         else
 398                         {
 399                                 // leaf - check if it is visible
 400                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 401                                 {
 402                                         // it is visible, return immediately with the news
 403                                         return true;
 404                                 }
 405                         }
 406                 }
 407 #endif
 408                 // nothing to see here, try another path we didn't take earlier
 409                 if (nodestackindex == 0)
 410                         break;
 411                 node = nodestack[--nodestackindex];
 412         }
 413         // it is not visible
 414         return false;
 415 }
 416
 417 typedef struct findnonsolidlocationinfo_s
 418 {
 419         vec3_t center;
 420         vec3_t absmin, absmax;
 421         vec_t radius;
 422         vec3_t nudge;
 423         vec_t bestdist;
 424         dp_model_t *model;
 425 }
 426 findnonsolidlocationinfo_t;
 427
 428 static void Mod_Q1BSP_FindNonSolidLocation_r_Triangle(findnonsolidlocationinfo_t *info, msurface_t *surface, int k)
 429 {
 430         int i, *tri;
 431         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 432
 433         tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 434         VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 435         VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 436         VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 437         VectorSubtract(vert[1], vert[0], edge[0]);
 438         VectorSubtract(vert[2], vert[1], edge[1]);
 439         CrossProduct(edge[1], edge[0], facenormal);
 440         if (facenormal[0] || facenormal[1] || facenormal[2])
 441         {
 442                 VectorNormalize(facenormal);
 443                 f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 444                 if (f <= info->bestdist && f >= -info->bestdist)
 445                 {
 446                         VectorSubtract(vert[0], vert[2], edge[2]);
 447                         VectorNormalize(edge[0]);
 448                         VectorNormalize(edge[1]);
 449                         VectorNormalize(edge[2]);
 450                         CrossProduct(facenormal, edge[0], edgenormal[0]);
 451                         CrossProduct(facenormal, edge[1], edgenormal[1]);
 452                         CrossProduct(facenormal, edge[2], edgenormal[2]);
 453                         // face distance
 454                         if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 455                                         && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 456                                         && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 457                         {
 458                                 // we got lucky, the center is within the face
 459                                 dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 460                                 if (dist < 0)
 461                                 {
 462                                         dist = -dist;
 463                                         if (info->bestdist > dist)
 464                                         {
 465                                                 info->bestdist = dist;
 466                                                 VectorScale(facenormal, (info->radius - -dist), info->nudge);
 467                                         }
 468                                 }
 469                                 else
 470                                 {
 471                                         if (info->bestdist > dist)
 472                                         {
 473                                                 info->bestdist = dist;
 474                                                 VectorScale(facenormal, (info->radius - dist), info->nudge);
 475                                         }
 476                                 }
 477                         }
 478                         else
 479                         {
 480                                 // check which edge or vertex the center is nearest
 481                                 for (i = 0;i < 3;i++)
 482                                 {
 483                                         f = DotProduct(info->center, edge[i]);
 484                                         if (f >= DotProduct(vert[0], edge[i])
 485                                                         && f <= DotProduct(vert[1], edge[i]))
 486                                         {
 487                                                 // on edge
 488                                                 VectorMA(info->center, -f, edge[i], point);
 489                                                 dist = sqrt(DotProduct(point, point));
 490                                                 if (info->bestdist > dist)
 491                                                 {
 492                                                         info->bestdist = dist;
 493                                                         VectorScale(point, (info->radius / dist), info->nudge);
 494                                                 }
 495                                                 // skip both vertex checks
 496                                                 // (both are further away than this edge)
 497                                                 i++;
 498                                         }
 499                                         else
 500                                         {
 501                                                 // not on edge, check first vertex of edge
 502                                                 VectorSubtract(info->center, vert[i], point);
 503                                                 dist = sqrt(DotProduct(point, point));
 504                                                 if (info->bestdist > dist)
 505                                                 {
 506                                                         info->bestdist = dist;
 507                                                         VectorScale(point, (info->radius / dist), info->nudge);
 508                                                 }
 509                                         }
 510                                 }
 511                         }
 512                 }
 513         }
 514 }
 515
 516 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 517 {
 518         int surfacenum, k, *mark;
 519         msurface_t *surface;
 520         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 521         {
 522                 surface = info->model->data_surfaces + *mark;
 523                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 524                 {
 525                         if(surface->num_bboxstride > 0)
 526                         {
 527                                 int i, cnt, tri;
 528                                 cnt = (surface->num_triangles + surface->num_bboxstride - 1) / surface->num_bboxstride;
 529                                 for(i = 0; i < cnt; ++i)
 530                                 {
 531                                         if(BoxesOverlap(surface->data_bbox6f + i * 6, surface->data_bbox6f + i * 6 + 3, info->absmin, info->absmax))
 532                                         {
 533                                                 for(k = 0; k < surface->num_bboxstride; ++k)
 534                                                 {
 535                                                         tri = i * surface->num_bboxstride + k;
 536                                                         if(tri >= surface->num_triangles)
 537                                                                 break;
 538                                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, tri);
 539                                                 }
 540                                         }
 541                                 }
 542                         }
 543                         else
 544                         {
 545                                 for (k = 0;k < surface->num_triangles;k++)
 546                                 {
 547                                         Mod_Q1BSP_FindNonSolidLocation_r_Triangle(info, surface, k);
 548                                 }
 549                         }
 550                 }
 551         }
 552 }
 553
 554 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 555 {
 556         if (node->plane)
 557         {
 558                 float f = PlaneDiff(info->center, node->plane);
 559                 if (f >= -info->bestdist)
 560                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 561                 if (f <= info->bestdist)
 562                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 563         }
 564         else
 565         {
 566                 if (((mleaf_t *)node)->numleafsurfaces)
 567                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 568         }
 569 }
 570
 571 static void Mod_Q1BSP_FindNonSolidLocation(dp_model_t *model, const vec3_t in, vec3_t out, float radius)
 572 {
 573         int i;
 574         findnonsolidlocationinfo_t info;
 575         if (model == NULL)
 576         {
 577                 VectorCopy(in, out);
 578                 return;
 579         }
 580         VectorCopy(in, info.center);
 581         info.radius = radius;
 582         info.model = model;
 583         i = 0;
 584         do
 585         {
 586                 VectorClear(info.nudge);
 587                 info.bestdist = radius;
 588                 VectorCopy(info.center, info.absmin);
 589                 VectorCopy(info.center, info.absmax);
 590                 info.absmin[0] -= info.radius + 1;
 591                 info.absmin[1] -= info.radius + 1;
 592                 info.absmin[2] -= info.radius + 1;
 593                 info.absmax[0] += info.radius + 1;
 594                 info.absmax[1] += info.radius + 1;
 595                 info.absmax[2] += info.radius + 1;
 596                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 597                 VectorAdd(info.center, info.nudge, info.center);
 598         }
 599         while (info.bestdist < radius && ++i < 10);
 600         VectorCopy(info.center, out);
 601 }
 602
 603 int Mod_Q1BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
 604 {
 605         switch(nativecontents)
 606         {
 607                 case CONTENTS_EMPTY:
 608                         return 0;
 609                 case CONTENTS_SOLID:
 610                         return SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
 611                 case CONTENTS_WATER:
 612                         return SUPERCONTENTS_WATER;
 613                 case CONTENTS_SLIME:
 614                         return SUPERCONTENTS_SLIME;
 615                 case CONTENTS_LAVA:
 616                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 617                 case CONTENTS_SKY:
 618                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP | SUPERCONTENTS_OPAQUE; // to match behaviour of Q3 maps, let sky count as opaque
 619         }
 620         return 0;
 621 }
 622
 623 int Mod_Q1BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
 624 {
 625         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 626                 return CONTENTS_SOLID;
 627         if (supercontents & SUPERCONTENTS_SKY)
 628                 return CONTENTS_SKY;
 629         if (supercontents & SUPERCONTENTS_LAVA)
 630                 return CONTENTS_LAVA;
 631         if (supercontents & SUPERCONTENTS_SLIME)
 632                 return CONTENTS_SLIME;
 633         if (supercontents & SUPERCONTENTS_WATER)
 634                 return CONTENTS_WATER;
 635         return CONTENTS_EMPTY;
 636 }
 637
 638 typedef struct RecursiveHullCheckTraceInfo_s
 639 {
 640         // the hull we're tracing through
 641         const hull_t *hull;
 642
 643         // the trace structure to fill in
 644         trace_t *trace;
 645
 646         // start, end, and end - start (in model space)
 647         double start[3];
 648         double end[3];
 649         double dist[3];
 650 }
 651 RecursiveHullCheckTraceInfo_t;
 652
 653 // 1/32 epsilon to keep floating point happy
 654 #define DIST_EPSILON (0.03125)
 655
 656 #define HULLCHECKSTATE_EMPTY 0
 657 #define HULLCHECKSTATE_SOLID 1
 658 #define HULLCHECKSTATE_DONE 2
 659
 660 extern cvar_t collision_prefernudgedfraction;
 661 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 662 {
 663         // status variables, these don't need to be saved on the stack when
 664         // recursing...  but are because this should be thread-safe
 665         // (note: tracing against a bbox is not thread-safe, yet)
 666         int ret;
 667         mplane_t *plane;
 668         double t1, t2;
 669
 670         // variables that need to be stored on the stack when recursing
 671         mclipnode_t *node;
 672         int side;
 673         double midf, mid[3];
 674
 675         // LordHavoc: a goto!  everyone flee in terror... :)
 676 loc0:
 677         // check for empty
 678         if (num < 0)
 679         {
 680                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 681                 if (!t->trace->startfound)
 682                 {
 683                         t->trace->startfound = true;
 684                         t->trace->startsupercontents |= num;
 685                 }
 686                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 687                         t->trace->inwater = true;
 688                 if (num == 0)
 689                         t->trace->inopen = true;
 690                 if (num & SUPERCONTENTS_SOLID)
 691                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 692                 else if (num & SUPERCONTENTS_SKY)
 693                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 694                 else if (num & SUPERCONTENTS_LAVA)
 695                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 696                 else if (num & SUPERCONTENTS_SLIME)
 697                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 698                 else
 699                         t->trace->hittexture = &mod_q1bsp_texture_water;
 700                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 701                 t->trace->hitsupercontents = num;
 702                 if (num & t->trace->hitsupercontentsmask)
 703                 {
 704                         // if the first leaf is solid, set startsolid
 705                         if (t->trace->allsolid)
 706                                 t->trace->startsolid = true;
 707 #if COLLISIONPARANOID >= 3
 708                         Con_Print("S");
 709 #endif
 710                         return HULLCHECKSTATE_SOLID;
 711                 }
 712                 else
 713                 {
 714                         t->trace->allsolid = false;
 715 #if COLLISIONPARANOID >= 3
 716                         Con_Print("E");
 717 #endif
 718                         return HULLCHECKSTATE_EMPTY;
 719                 }
 720         }
 721
 722         // find the point distances
 723         node = t->hull->clipnodes + num;
 724
 725         plane = t->hull->planes + node->planenum;
 726         if (plane->type < 3)
 727         {
 728                 t1 = p1[plane->type] - plane->dist;
 729                 t2 = p2[plane->type] - plane->dist;
 730         }
 731         else
 732         {
 733                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 734                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 735         }
 736
 737         if (t1 < 0)
 738         {
 739                 if (t2 < 0)
 740                 {
 741 #if COLLISIONPARANOID >= 3
 742                         Con_Print("<");
 743 #endif
 744                         num = node->children[1];
 745                         goto loc0;
 746                 }
 747                 side = 1;
 748         }
 749         else
 750         {
 751                 if (t2 >= 0)
 752                 {
 753 #if COLLISIONPARANOID >= 3
 754                         Con_Print(">");
 755 #endif
 756                         num = node->children[0];
 757                         goto loc0;
 758                 }
 759                 side = 0;
 760         }
 761
 762         // the line intersects, find intersection point
 763         // LordHavoc: this uses the original trace for maximum accuracy
 764 #if COLLISIONPARANOID >= 3
 765         Con_Print("M");
 766 #endif
 767         if (plane->type < 3)
 768         {
 769                 t1 = t->start[plane->type] - plane->dist;
 770                 t2 = t->end[plane->type] - plane->dist;
 771         }
 772         else
 773         {
 774                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 775                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 776         }
 777
 778         midf = t1 / (t1 - t2);
 779         midf = bound(p1f, midf, p2f);
 780         VectorMA(t->start, midf, t->dist, mid);
 781
 782         // recurse both sides, front side first
 783         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 784         // if this side is not empty, return what it is (solid or done)
 785         if (ret != HULLCHECKSTATE_EMPTY)
 786                 return ret;
 787
 788         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 789         // if other side is not solid, return what it is (empty or done)
 790         if (ret != HULLCHECKSTATE_SOLID)
 791                 return ret;
 792
 793         // front is air and back is solid, this is the impact point...
 794         if (side)
 795         {
 796                 t->trace->plane.dist = -plane->dist;
 797                 VectorNegate (plane->normal, t->trace->plane.normal);
 798         }
 799         else
 800         {
 801                 t->trace->plane.dist = plane->dist;
 802                 VectorCopy (plane->normal, t->trace->plane.normal);
 803         }
 804
 805         // calculate the true fraction
 806         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 807         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 808         midf = t1 / (t1 - t2);
 809         t->trace->realfraction = bound(0, midf, 1);
 810
 811         // calculate the return fraction which is nudged off the surface a bit
 812         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 813         t->trace->fraction = bound(0, midf, 1);
 814
 815         if (collision_prefernudgedfraction.integer)
 816                 t->trace->realfraction = t->trace->fraction;
 817
 818 #if COLLISIONPARANOID >= 3
 819         Con_Print("D");
 820 #endif
 821         return HULLCHECKSTATE_DONE;
 822 }
 823
 824 //#if COLLISIONPARANOID < 2
 825 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 826 {
 827         mplane_t *plane;
 828         mclipnode_t *nodes = t->hull->clipnodes;
 829         mplane_t *planes = t->hull->planes;
 830         vec3_t point;
 831         VectorCopy(t->start, point);
 832         while (num >= 0)
 833         {
 834                 plane = planes + nodes[num].planenum;
 835                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
 836         }
 837         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 838         t->trace->startsupercontents |= num;
 839         if (num & SUPERCONTENTS_LIQUIDSMASK)
 840                 t->trace->inwater = true;
 841         if (num == 0)
 842                 t->trace->inopen = true;
 843         if (num & t->trace->hitsupercontentsmask)
 844         {
 845                 t->trace->allsolid = t->trace->startsolid = true;
 846                 return HULLCHECKSTATE_SOLID;
 847         }
 848         else
 849         {
 850                 t->trace->allsolid = t->trace->startsolid = false;
 851                 return HULLCHECKSTATE_EMPTY;
 852         }
 853 }
 854 //#endif
 855
 856 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)
 857 {
 858         RecursiveHullCheckTraceInfo_t rhc;
 859
 860         memset(&rhc, 0, sizeof(rhc));
 861         memset(trace, 0, sizeof(trace_t));
 862         rhc.trace = trace;
 863         rhc.trace->fraction = 1;
 864         rhc.trace->realfraction = 1;
 865         rhc.trace->allsolid = true;
 866         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 867         VectorCopy(start, rhc.start);
 868         VectorCopy(start, rhc.end);
 869         Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 870 }
 871
 872 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)
 873 {
 874         RecursiveHullCheckTraceInfo_t rhc;
 875
 876         if (VectorCompare(start, end))
 877         {
 878                 Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 879                 return;
 880         }
 881
 882         memset(&rhc, 0, sizeof(rhc));
 883         memset(trace, 0, sizeof(trace_t));
 884         rhc.trace = trace;
 885         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 886         rhc.trace->fraction = 1;
 887         rhc.trace->realfraction = 1;
 888         rhc.trace->allsolid = true;
 889         rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 890         VectorCopy(start, rhc.start);
 891         VectorCopy(end, rhc.end);
 892         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 893 #if COLLISIONPARANOID >= 2
 894         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]);
 895         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 896         {
 897
 898                 double test[3];
 899                 trace_t testtrace;
 900                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 901                 memset(&testtrace, 0, sizeof(trace_t));
 902                 rhc.trace = &testtrace;
 903                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 904                 rhc.trace->fraction = 1;
 905                 rhc.trace->realfraction = 1;
 906                 rhc.trace->allsolid = true;
 907                 VectorCopy(test, rhc.start);
 908                 VectorCopy(test, rhc.end);
 909                 VectorClear(rhc.dist);
 910                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 911                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 912                 if (!trace->startsolid && testtrace.startsolid)
 913                         Con_Printf(" - ended in solid!\n");
 914         }
 915         Con_Print("\n");
 916 #else
 917         if (VectorLength2(rhc.dist))
 918                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 919         else
 920                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 921 #endif
 922 }
 923
 924 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)
 925 {
 926         // this function currently only supports same size start and end
 927         double boxsize[3];
 928         RecursiveHullCheckTraceInfo_t rhc;
 929
 930         if (VectorCompare(boxmins, boxmaxs))
 931         {
 932                 if (VectorCompare(start, end))
 933                         Mod_Q1BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
 934                 else
 935                         Mod_Q1BSP_TraceLine(model, frameblend, skeleton, trace, start, end, hitsupercontentsmask);
 936                 return;
 937         }
 938
 939         memset(&rhc, 0, sizeof(rhc));
 940         memset(trace, 0, sizeof(trace_t));
 941         rhc.trace = trace;
 942         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 943         rhc.trace->fraction = 1;
 944         rhc.trace->realfraction = 1;
 945         rhc.trace->allsolid = true;
 946         VectorSubtract(boxmaxs, boxmins, boxsize);
 947         if (boxsize[0] < 3)
 948                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 949         else if (model->brush.ishlbsp)
 950         {
 951                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 952                 // minor float precision errors from the box being transformed around
 953                 if (boxsize[0] < 32.1)
 954                 {
 955                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 956                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 957                         else
 958                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 959                 }
 960                 else
 961                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 962         }
 963         else
 964         {
 965                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 966                 // minor float precision errors from the box being transformed around
 967                 if (boxsize[0] < 32.1)
 968                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 969                 else
 970                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 971         }
 972         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 973         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 974         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 975 #if COLLISIONPARANOID >= 2
 976         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]);
 977         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 978         {
 979
 980                 double test[3];
 981                 trace_t testtrace;
 982                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 983                 memset(&testtrace, 0, sizeof(trace_t));
 984                 rhc.trace = &testtrace;
 985                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 986                 rhc.trace->fraction = 1;
 987                 rhc.trace->realfraction = 1;
 988                 rhc.trace->allsolid = true;
 989                 VectorCopy(test, rhc.start);
 990                 VectorCopy(test, rhc.end);
 991                 VectorClear(rhc.dist);
 992                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 993                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 994                 if (!trace->startsolid && testtrace.startsolid)
 995                         Con_Printf(" - ended in solid!\n");
 996         }
 997         Con_Print("\n");
 998 #else
 999         if (VectorLength2(rhc.dist))
1000                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1001         else
1002                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
1003 #endif
1004 }
1005
1006 static int Mod_Q1BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
1007 {
1008         int num = model->brushq1.hulls[0].firstclipnode;
1009         mplane_t *plane;
1010         mclipnode_t *nodes = model->brushq1.hulls[0].clipnodes;
1011         mplane_t *planes = model->brushq1.hulls[0].planes;
1012         while (num >= 0)
1013         {
1014                 plane = planes + nodes[num].planenum;
1015                 num = nodes[num].children[(plane->type < 3 ? point[plane->type] : DotProduct(plane->normal, point)) < plane->dist];
1016         }
1017         return Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
1018 }
1019
1020 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, texture_t *boxtexture)
1021 {
1022 #if 1
1023         colbrushf_t cbox;
1024         colplanef_t cbox_planes[6];
1025         cbox.isaabb = true;
1026         cbox.hasaabbplanes = true;
1027         cbox.supercontents = boxsupercontents;
1028         cbox.numplanes = 6;
1029         cbox.numpoints = 0;
1030         cbox.numtriangles = 0;
1031         cbox.planes = cbox_planes;
1032         cbox.points = NULL;
1033         cbox.elements = NULL;
1034         cbox.markframe = 0;
1035         cbox.mins[0] = 0;
1036         cbox.mins[1] = 0;
1037         cbox.mins[2] = 0;
1038         cbox.maxs[0] = 0;
1039         cbox.maxs[1] = 0;
1040         cbox.maxs[2] = 0;
1041         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];
1042         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];
1043         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];
1044         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];
1045         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];
1046         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];
1047         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
1048         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
1049         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
1050         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
1051         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
1052         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
1053         memset(trace, 0, sizeof(trace_t));
1054         trace->hitsupercontentsmask = hitsupercontentsmask;
1055         trace->fraction = 1;
1056         trace->realfraction = 1;
1057         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
1058 #else
1059         RecursiveHullCheckTraceInfo_t rhc;
1060         static hull_t box_hull;
1061         static mclipnode_t box_clipnodes[6];
1062         static mplane_t box_planes[6];
1063         // fill in a default trace
1064         memset(&rhc, 0, sizeof(rhc));
1065         memset(trace, 0, sizeof(trace_t));
1066         //To keep everything totally uniform, bounding boxes are turned into small
1067         //BSP trees instead of being compared directly.
1068         // create a temp hull from bounding box sizes
1069         box_planes[0].dist = cmaxs[0] - mins[0];
1070         box_planes[1].dist = cmins[0] - maxs[0];
1071         box_planes[2].dist = cmaxs[1] - mins[1];
1072         box_planes[3].dist = cmins[1] - maxs[1];
1073         box_planes[4].dist = cmaxs[2] - mins[2];
1074         box_planes[5].dist = cmins[2] - maxs[2];
1075 #if COLLISIONPARANOID >= 3
1076         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]);
1077 #endif
1078
1079         if (box_hull.clipnodes == NULL)
1080         {
1081                 int i, side;
1082
1083                 //Set up the planes and clipnodes so that the six floats of a bounding box
1084                 //can just be stored out and get a proper hull_t structure.
1085
1086                 box_hull.clipnodes = box_clipnodes;
1087                 box_hull.planes = box_planes;
1088                 box_hull.firstclipnode = 0;
1089                 box_hull.lastclipnode = 5;
1090
1091                 for (i = 0;i < 6;i++)
1092                 {
1093                         box_clipnodes[i].planenum = i;
1094
1095                         side = i&1;
1096
1097                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
1098                         if (i != 5)
1099                                 box_clipnodes[i].children[side^1] = i + 1;
1100                         else
1101                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
1102
1103                         box_planes[i].type = i>>1;
1104                         box_planes[i].normal[i>>1] = 1;
1105                 }
1106         }
1107
1108         // trace a line through the generated clipping hull
1109         //rhc.boxsupercontents = boxsupercontents;
1110         rhc.hull = &box_hull;
1111         rhc.trace = trace;
1112         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
1113         rhc.trace->fraction = 1;
1114         rhc.trace->realfraction = 1;
1115         rhc.trace->allsolid = true;
1116         VectorCopy(start, rhc.start);
1117         VectorCopy(end, rhc.end);
1118         VectorSubtract(rhc.end, rhc.start, rhc.dist);
1119         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
1120         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
1121         if (rhc.trace->startsupercontents)
1122                 rhc.trace->startsupercontents = boxsupercontents;
1123 #endif
1124 }
1125
1126 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, texture_t *boxtexture)
1127 {
1128         memset(trace, 0, sizeof(trace_t));
1129         trace->fraction = 1;
1130         trace->realfraction = 1;
1131         if (BoxesOverlap(start, start, cmins, cmaxs))
1132         {
1133                 trace->startsupercontents |= boxsupercontents;
1134                 if (hitsupercontentsmask & boxsupercontents)
1135                 {
1136                         trace->startsolid = true;
1137                         trace->allsolid = true;
1138                 }
1139         }
1140 }
1141
1142 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1143 {
1144         trace_t trace;
1145         model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
1146         return trace.fraction == 1;
1147 }
1148
1149 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)
1150 {
1151         int side;
1152         float front, back;
1153         float mid, distz = endz - startz;
1154
1155 loc0:
1156         if (!node->plane)
1157                 return false;           // didn't hit anything
1158
1159         switch (node->plane->type)
1160         {
1161         case PLANE_X:
1162                 node = node->children[x < node->plane->dist];
1163                 goto loc0;
1164         case PLANE_Y:
1165                 node = node->children[y < node->plane->dist];
1166                 goto loc0;
1167         case PLANE_Z:
1168                 side = startz < node->plane->dist;
1169                 if ((endz < node->plane->dist) == side)
1170                 {
1171                         node = node->children[side];
1172                         goto loc0;
1173                 }
1174                 // found an intersection
1175                 mid = node->plane->dist;
1176                 break;
1177         default:
1178                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1179                 front += startz * node->plane->normal[2];
1180                 back += endz * node->plane->normal[2];
1181                 side = front < node->plane->dist;
1182                 if ((back < node->plane->dist) == side)
1183                 {
1184                         node = node->children[side];
1185                         goto loc0;
1186                 }
1187                 // found an intersection
1188                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1189                 break;
1190         }
1191
1192         // go down front side
1193         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1194                 return true;    // hit something
1195         else
1196         {
1197                 // check for impact on this node
1198                 if (node->numsurfaces)
1199                 {
1200                         int i, dsi, dti, lmwidth, lmheight;
1201                         float ds, dt;
1202                         msurface_t *surface;
1203                         unsigned char *lightmap;
1204                         int maps, line3, size3;
1205                         float dsfrac;
1206                         float dtfrac;
1207                         float scale, w, w00, w01, w10, w11;
1208
1209                         surface = model->data_surfaces + node->firstsurface;
1210                         for (i = 0;i < node->numsurfaces;i++, surface++)
1211                         {
1212                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1213                                         continue;       // no lightmaps
1214
1215                                 // location we want to sample in the lightmap
1216                                 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;
1217                                 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;
1218
1219                                 // check the bounds
1220                                 dsi = (int)ds;
1221                                 dti = (int)dt;
1222                                 lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1223                                 lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1224
1225                                 // is it in bounds?
1226                                 if (dsi >= 0 && dsi < lmwidth-1 && dti >= 0 && dti < lmheight-1)
1227                                 {
1228                                         // calculate bilinear interpolation factors
1229                                         // and also multiply by fixedpoint conversion factors
1230                                         dsfrac = ds - dsi;
1231                                         dtfrac = dt - dti;
1232                                         w00 = (1 - dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1233                                         w01 = (    dsfrac) * (1 - dtfrac) * (1.0f / 32768.0f);
1234                                         w10 = (1 - dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1235                                         w11 = (    dsfrac) * (    dtfrac) * (1.0f / 32768.0f);
1236
1237                                         // values for pointer math
1238                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1239                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1240
1241                                         // look up the pixel
1242                                         lightmap = surface->lightmapinfo->samples + dti * line3 + dsi*3; // LordHavoc: *3 for colored lighting
1243
1244                                         // bilinear filter each lightmap style, and sum them
1245                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1246                                         {
1247                                                 scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]];
1248                                                 w = w00 * scale;VectorMA(ambientcolor, w, lightmap            , ambientcolor);
1249                                                 w = w01 * scale;VectorMA(ambientcolor, w, lightmap + 3        , ambientcolor);
1250                                                 w = w10 * scale;VectorMA(ambientcolor, w, lightmap + line3    , ambientcolor);
1251                                                 w = w11 * scale;VectorMA(ambientcolor, w, lightmap + line3 + 3, ambientcolor);
1252                                                 lightmap += size3;
1253                                         }
1254
1255                                         return true; // success
1256                                 }
1257                         }
1258                 }
1259
1260                 // go down back side
1261                 node = node->children[side ^ 1];
1262                 startz = mid;
1263                 distz = endz - startz;
1264                 goto loc0;
1265         }
1266 }
1267
1268 void Mod_Q1BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1269 {
1270         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1271         VectorSet(diffusenormal, 0, 0, 1);
1272
1273         if (!model->brushq1.lightdata)
1274         {
1275                 VectorSet(ambientcolor, 1, 1, 1);
1276                 VectorSet(diffusecolor, 0, 0, 0);
1277                 return;
1278         }
1279
1280         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);
1281 }
1282
1283 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1284 {
1285         int c;
1286         unsigned char *outstart = out;
1287         while (out < outend)
1288         {
1289                 if (in == inend)
1290                 {
1291                         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));
1292                         return;
1293                 }
1294                 c = *in++;
1295                 if (c)
1296                         *out++ = c;
1297                 else
1298                 {
1299                         if (in == inend)
1300                         {
1301                                 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));
1302                                 return;
1303                         }
1304                         for (c = *in++;c > 0;c--)
1305                         {
1306                                 if (out == outend)
1307                                 {
1308                                         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));
1309                                         return;
1310                                 }
1311                                 *out++ = 0;
1312                         }
1313                 }
1314         }
1315 }
1316
1317 /*
1318 =============
1319 R_Q1BSP_LoadSplitSky
1320
1321 A sky texture is 256*128, with the right side being a masked overlay
1322 ==============
1323 */
1324 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1325 {
1326         int x, y;
1327         int w = width/2;
1328         int h = height;
1329         unsigned *solidpixels = Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1330         unsigned *alphapixels = Mem_Alloc(tempmempool, w*h*sizeof(unsigned char[4]));
1331
1332         // allocate a texture pool if we need it
1333         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1334                 loadmodel->texturepool = R_AllocTexturePool();
1335
1336         if (bytesperpixel == 4)
1337         {
1338                 for (y = 0;y < h;y++)
1339                 {
1340                         for (x = 0;x < w;x++)
1341                         {
1342                                 solidpixels[y*w+x] = ((unsigned *)src)[y*width+x+w];
1343                                 alphapixels[y*w+x] = ((unsigned *)src)[y*width+x];
1344                         }
1345                 }
1346         }
1347         else
1348         {
1349                 // make an average value for the back to avoid
1350                 // a fringe on the top level
1351                 int p, r, g, b;
1352                 union
1353                 {
1354                         unsigned int i;
1355                         unsigned char b[4];
1356                 }
1357                 bgra;
1358                 r = g = b = 0;
1359                 for (y = 0;y < h;y++)
1360                 {
1361                         for (x = 0;x < w;x++)
1362                         {
1363                                 p = src[x*width+y+w];
1364                                 r += palette_rgb[p][0];
1365                                 g += palette_rgb[p][1];
1366                                 b += palette_rgb[p][2];
1367                         }
1368                 }
1369                 bgra.b[2] = r/(w*h);
1370                 bgra.b[1] = g/(w*h);
1371                 bgra.b[0] = b/(w*h);
1372                 bgra.b[3] = 0;
1373                 for (y = 0;y < h;y++)
1374                 {
1375                         for (x = 0;x < w;x++)
1376                         {
1377                                 solidpixels[y*w+x] = palette_bgra_complete[src[y*width+x+w]];
1378                                 p = src[y*width+x];
1379                                 alphapixels[y*w+x] = p ? palette_bgra_complete[p] : bgra.i;
1380                         }
1381                 }
1382         }
1383
1384         loadmodel->brush.solidskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_solidtexture",              TEXF_PRECACHE, (unsigned char *) solidpixels, w, h);
1385         loadmodel->brush.alphaskyskinframe = R_SkinFrame_LoadInternalBGRA("sky_alphatexture", TEXF_ALPHA | TEXF_PRECACHE, (unsigned char *) alphapixels, w, h);
1386         Mem_Free(solidpixels);
1387         Mem_Free(alphapixels);
1388 }
1389
1390 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1391 {
1392         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1393         skinframe_t *skinframe;
1394         miptex_t *dmiptex;
1395         texture_t *tx, *tx2, *anims[10], *altanims[10];
1396         dmiptexlump_t *m;
1397         unsigned char *data, *mtdata;
1398         const char *s;
1399         char mapname[MAX_QPATH], name[MAX_QPATH];
1400         unsigned char zero[4];
1401
1402         memset(zero, 0, sizeof(zero));
1403
1404         loadmodel->data_textures = NULL;
1405
1406         // add two slots for notexture walls and notexture liquids
1407         if (l->filelen)
1408         {
1409                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1410                 m->nummiptex = LittleLong (m->nummiptex);
1411                 loadmodel->num_textures = m->nummiptex + 2;
1412                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1413         }
1414         else
1415         {
1416                 m = NULL;
1417                 loadmodel->num_textures = 2;
1418                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1419         }
1420
1421         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1422
1423         // fill out all slots with notexture
1424         if (cls.state != ca_dedicated)
1425                 skinframe = R_SkinFrame_LoadMissing();
1426         else
1427                 skinframe = NULL;
1428         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1429         {
1430                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1431                 tx->width = 16;
1432                 tx->height = 16;
1433                 if (cls.state != ca_dedicated)
1434                 {
1435                         tx->numskinframes = 1;
1436                         tx->skinframerate = 1;
1437                         tx->skinframes[0] = skinframe;
1438                         tx->currentskinframe = tx->skinframes[0];
1439                 }
1440                 tx->basematerialflags = MATERIALFLAG_WALL;
1441                 if (i == loadmodel->num_textures - 1)
1442                 {
1443                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1444                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1445                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1446                 }
1447                 else
1448                 {
1449                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1450                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1451                 }
1452                 tx->currentframe = tx;
1453
1454                 // clear water settings
1455                 tx->reflectmin = 0;
1456                 tx->reflectmax = 1;
1457                 tx->refractfactor = 1;
1458                 Vector4Set(tx->refractcolor4f, 1, 1, 1, 1);
1459                 tx->reflectfactor = 1;
1460                 Vector4Set(tx->reflectcolor4f, 1, 1, 1, 1);
1461                 tx->r_water_wateralpha = 1;
1462                 tx->specularscalemod = 1;
1463                 tx->specularpowermod = 1;
1464         }
1465
1466         if (!m)
1467         {
1468                 Con_Printf("%s: no miptex lump to load textures from\n", loadmodel->name);
1469                 return;
1470         }
1471
1472         s = loadmodel->name;
1473         if (!strncasecmp(s, "maps/", 5))
1474                 s += 5;
1475         FS_StripExtension(s, mapname, sizeof(mapname));
1476
1477         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1478         dofs = m->dataofs;
1479         // LordHavoc: mostly rewritten map texture loader
1480         for (i = 0;i < m->nummiptex;i++)
1481         {
1482                 dofs[i] = LittleLong(dofs[i]);
1483                 if (r_nosurftextures.integer)
1484                         continue;
1485                 if (dofs[i] == -1)
1486                 {
1487                         Con_DPrintf("%s: miptex #%i missing\n", loadmodel->name, i);
1488                         continue;
1489                 }
1490                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1491
1492                 // copy name, but only up to 16 characters
1493                 // (the output buffer can hold more than this, but the input buffer is
1494                 //  only 16)
1495                 for (j = 0;j < 16 && dmiptex->name[j];j++)
1496                         name[j] = dmiptex->name[j];
1497                 name[j] = 0;
1498
1499                 if (!name[0])
1500                 {
1501                         dpsnprintf(name, sizeof(name), "unnamed%i", i);
1502                         Con_DPrintf("%s: warning: renaming unnamed texture to %s\n", loadmodel->name, name);
1503                 }
1504
1505                 mtwidth = LittleLong(dmiptex->width);
1506                 mtheight = LittleLong(dmiptex->height);
1507                 mtdata = NULL;
1508                 j = LittleLong(dmiptex->offsets[0]);
1509                 if (j)
1510                 {
1511                         // texture included
1512                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1513                         {
1514                                 Con_Printf("%s: Texture \"%s\" is corrupt or incomplete\n", loadmodel->name, dmiptex->name);
1515                                 continue;
1516                         }
1517                         mtdata = (unsigned char *)dmiptex + j;
1518                 }
1519
1520                 if ((mtwidth & 15) || (mtheight & 15))
1521                         Con_DPrintf("%s: warning: texture \"%s\" is not 16 aligned\n", loadmodel->name, dmiptex->name);
1522
1523                 // LordHavoc: force all names to lowercase
1524                 for (j = 0;name[j];j++)
1525                         if (name[j] >= 'A' && name[j] <= 'Z')
1526                                 name[j] += 'a' - 'A';
1527
1528                 if (dmiptex->name[0] && Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, name, false, false, 0))
1529                         continue;
1530
1531                 tx = loadmodel->data_textures + i;
1532                 strlcpy(tx->name, name, sizeof(tx->name));
1533                 tx->width = mtwidth;
1534                 tx->height = mtheight;
1535
1536                 if (tx->name[0] == '*')
1537                 {
1538                         if (!strncmp(tx->name, "*lava", 5))
1539                         {
1540                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1541                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1542                         }
1543                         else if (!strncmp(tx->name, "*slime", 6))
1544                         {
1545                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1546                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1547                         }
1548                         else
1549                         {
1550                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1551                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1552                         }
1553                 }
1554                 else if (!strncmp(tx->name, "sky", 3))
1555                 {
1556                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1557                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1558                 }
1559                 else
1560                 {
1561                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1562                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1563                 }
1564
1565                 if (cls.state != ca_dedicated)
1566                 {
1567                         // LordHavoc: HL sky textures are entirely different than quake
1568                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == mtheight * 2)
1569                         {
1570                                 data = loadimagepixelsbgra(tx->name, false, false);
1571                                 if (data && image_width == image_height * 2)
1572                                 {
1573                                         R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1574                                         Mem_Free(data);
1575                                 }
1576                                 else if (mtdata != NULL)
1577                                         R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1578                         }
1579                         else
1580                         {
1581                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1582                                 if (!skinframe)
1583                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_ALPHA | TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS, false);
1584                                 if (!skinframe)
1585                                 {
1586                                         // did not find external texture, load it from the bsp or wad3
1587                                         if (loadmodel->brush.ishlbsp)
1588                                         {
1589                                                 // internal texture overrides wad
1590                                                 unsigned char *pixels, *freepixels;
1591                                                 pixels = freepixels = NULL;
1592                                                 if (mtdata)
1593                                                         pixels = W_ConvertWAD3TextureBGRA(dmiptex);
1594                                                 if (pixels == NULL)
1595                                                         pixels = freepixels = W_GetTextureBGRA(tx->name);
1596                                                 if (pixels != NULL)
1597                                                 {
1598                                                         tx->width = image_width;
1599                                                         tx->height = image_height;
1600                                                         skinframe = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_ALPHA | TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), pixels, image_width, image_height);
1601                                                 }
1602                                                 if (freepixels)
1603                                                         Mem_Free(freepixels);
1604                                         }
1605                                         else if (mtdata) // texture included
1606                                                 skinframe = R_SkinFrame_LoadInternalQuake(tx->name, TEXF_PRECACHE | TEXF_MIPMAP | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, r_fullbrights.integer, mtdata, tx->width, tx->height);
1607                                 }
1608                                 // if skinframe is still NULL the "missing" texture will be used
1609                                 if (skinframe)
1610                                         tx->skinframes[0] = skinframe;
1611                         }
1612
1613                         tx->basematerialflags = MATERIALFLAG_WALL;
1614                         if (tx->name[0] == '*')
1615                         {
1616                                 // LordHavoc: some turbulent textures should not be affected by wateralpha
1617                                 if (!strncmp(tx->name, "*glassmirror", 12)) // Tenebrae
1618                                 {
1619                                         // replace the texture with transparent black
1620                                         Vector4Set(zero, 128, 128, 128, 128);
1621                                         tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_ALPHA, zero, 1, 1);
1622                                         tx->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_REFLECTION;
1623                                 }
1624                                 else if (!strncmp(tx->name,"*lava",5)
1625                                  || !strncmp(tx->name,"*teleport",9)
1626                                  || !strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1627                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1628                                 else
1629                                         tx->basematerialflags |= MATERIALFLAG_WATERSCROLL | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW | MATERIALFLAG_WATERALPHA | MATERIALFLAG_WATERSHADER;
1630                                 if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1631                                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1632                         }
1633                         else if (!strncmp(tx->name, "mirror", 6)) // Tenebrae
1634                         {
1635                                 // replace the texture with black
1636                                 tx->skinframes[0] = R_SkinFrame_LoadInternalBGRA(tx->name, TEXF_PRECACHE, zero, 1, 1);
1637                                 tx->basematerialflags |= MATERIALFLAG_REFLECTION;
1638                         }
1639                         else if (!strncmp(tx->name, "sky", 3))
1640                                 tx->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1641                         else if (!strcmp(tx->name, "caulk"))
1642                                 tx->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
1643                         else if (tx->skinframes[0] && tx->skinframes[0]->hasalpha)
1644                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1645
1646                         // start out with no animation
1647                         tx->currentframe = tx;
1648                         tx->currentskinframe = tx->skinframes[0];
1649                 }
1650         }
1651
1652         // sequence the animations
1653         for (i = 0;i < m->nummiptex;i++)
1654         {
1655                 tx = loadmodel->data_textures + i;
1656                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1657                         continue;
1658                 if (tx->anim_total[0] || tx->anim_total[1])
1659                         continue;       // already sequenced
1660
1661                 // find the number of frames in the animation
1662                 memset(anims, 0, sizeof(anims));
1663                 memset(altanims, 0, sizeof(altanims));
1664
1665                 for (j = i;j < m->nummiptex;j++)
1666                 {
1667                         tx2 = loadmodel->data_textures + j;
1668                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1669                                 continue;
1670
1671                         num = tx2->name[1];
1672                         if (num >= '0' && num <= '9')
1673                                 anims[num - '0'] = tx2;
1674                         else if (num >= 'a' && num <= 'j')
1675                                 altanims[num - 'a'] = tx2;
1676                         else
1677                                 Con_Printf("Bad animating texture %s\n", tx->name);
1678                 }
1679
1680                 max = altmax = 0;
1681                 for (j = 0;j < 10;j++)
1682                 {
1683                         if (anims[j])
1684                                 max = j + 1;
1685                         if (altanims[j])
1686                                 altmax = j + 1;
1687                 }
1688                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1689
1690                 incomplete = false;
1691                 for (j = 0;j < max;j++)
1692                 {
1693                         if (!anims[j])
1694                         {
1695                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1696                                 incomplete = true;
1697                         }
1698                 }
1699                 for (j = 0;j < altmax;j++)
1700                 {
1701                         if (!altanims[j])
1702                         {
1703                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1704                                 incomplete = true;
1705                         }
1706                 }
1707                 if (incomplete)
1708                         continue;
1709
1710                 if (altmax < 1)
1711                 {
1712                         // if there is no alternate animation, duplicate the primary
1713                         // animation into the alternate
1714                         altmax = max;
1715                         for (k = 0;k < 10;k++)
1716                                 altanims[k] = anims[k];
1717                 }
1718
1719                 // link together the primary animation
1720                 for (j = 0;j < max;j++)
1721                 {
1722                         tx2 = anims[j];
1723                         tx2->animated = true;
1724                         tx2->anim_total[0] = max;
1725                         tx2->anim_total[1] = altmax;
1726                         for (k = 0;k < 10;k++)
1727                         {
1728                                 tx2->anim_frames[0][k] = anims[k];
1729                                 tx2->anim_frames[1][k] = altanims[k];
1730                         }
1731                 }
1732
1733                 // if there really is an alternate anim...
1734                 if (anims[0] != altanims[0])
1735                 {
1736                         // link together the alternate animation
1737                         for (j = 0;j < altmax;j++)
1738                         {
1739                                 tx2 = altanims[j];
1740                                 tx2->animated = true;
1741                                 // the primary/alternate are reversed here
1742                                 tx2->anim_total[0] = altmax;
1743                                 tx2->anim_total[1] = max;
1744                                 for (k = 0;k < 10;k++)
1745                                 {
1746                                         tx2->anim_frames[0][k] = altanims[k];
1747                                         tx2->anim_frames[1][k] = anims[k];
1748                                 }
1749                         }
1750                 }
1751         }
1752 }
1753
1754 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1755 {
1756         int i;
1757         unsigned char *in, *out, *data, d;
1758         char litfilename[MAX_QPATH];
1759         char dlitfilename[MAX_QPATH];
1760         fs_offset_t filesize;
1761         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1762         {
1763                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1764                 for (i=0; i<l->filelen; i++)
1765                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1766         }
1767         else // LordHavoc: bsp version 29 (normal white lighting)
1768         {
1769                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1770                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1771                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1772                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1773                 strlcat (litfilename, ".lit", sizeof (litfilename));
1774                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1775                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1776                 if (data)
1777                 {
1778                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1779                         {
1780                                 i = LittleLong(((int *)data)[1]);
1781                                 if (i == 1)
1782                                 {
1783                                         if (developer_loading.integer)
1784                                                 Con_Printf("loaded %s\n", litfilename);
1785                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1786                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1787                                         Mem_Free(data);
1788                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1789                                         if (data)
1790                                         {
1791                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1792                                                 {
1793                                                         i = LittleLong(((int *)data)[1]);
1794                                                         if (i == 1)
1795                                                         {
1796                                                                 if (developer_loading.integer)
1797                                                                         Con_Printf("loaded %s\n", dlitfilename);
1798                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1799                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1800                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1801                                                                 loadmodel->brushq3.deluxemapping = true;
1802                                                         }
1803                                                 }
1804                                                 Mem_Free(data);
1805                                                 data = NULL;
1806                                         }
1807                                         return;
1808                                 }
1809                                 else
1810                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1811                         }
1812                         else if (filesize == 8)
1813                                 Con_Print("Empty .lit file, ignoring\n");
1814                         else
1815                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1816                         if (data)
1817                         {
1818                                 Mem_Free(data);
1819                                 data = NULL;
1820                         }
1821                 }
1822                 // LordHavoc: oh well, expand the white lighting data
1823                 if (!l->filelen)
1824                         return;
1825                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1826                 in = mod_base + l->fileofs;
1827                 out = loadmodel->brushq1.lightdata;
1828                 for (i = 0;i < l->filelen;i++)
1829                 {
1830                         d = *in++;
1831                         *out++ = d;
1832                         *out++ = d;
1833                         *out++ = d;
1834                 }
1835         }
1836 }
1837
1838 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1839 {
1840         loadmodel->brushq1.num_compressedpvs = 0;
1841         loadmodel->brushq1.data_compressedpvs = NULL;
1842         if (!l->filelen)
1843                 return;
1844         loadmodel->brushq1.num_compressedpvs = l->filelen;
1845         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1846         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1847 }
1848
1849 // used only for HalfLife maps
1850 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1851 {
1852         char key[128], value[4096];
1853         int i, j, k;
1854         if (!data)
1855                 return;
1856         if (!COM_ParseToken_Simple(&data, false, false))
1857                 return; // error
1858         if (com_token[0] != '{')
1859                 return; // error
1860         while (1)
1861         {
1862                 if (!COM_ParseToken_Simple(&data, false, false))
1863                         return; // error
1864                 if (com_token[0] == '}')
1865                         break; // end of worldspawn
1866                 if (com_token[0] == '_')
1867                         strlcpy(key, com_token + 1, sizeof(key));
1868                 else
1869                         strlcpy(key, com_token, sizeof(key));
1870                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1871                         key[strlen(key)-1] = 0;
1872                 if (!COM_ParseToken_Simple(&data, false, false))
1873                         return; // error
1874                 dpsnprintf(value, sizeof(value), "%s", com_token);
1875                 if (!strcmp("wad", key)) // for HalfLife maps
1876                 {
1877                         if (loadmodel->brush.ishlbsp)
1878                         {
1879                                 j = 0;
1880                                 for (i = 0;i < (int)sizeof(value);i++)
1881                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1882                                                 break;
1883                                 if (value[i])
1884                                 {
1885                                         for (;i < (int)sizeof(value);i++)
1886                                         {
1887                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1888                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1889                                                         j = i+1;
1890                                                 else if (value[i] == ';' || value[i] == 0)
1891                                                 {
1892                                                         k = value[i];
1893                                                         value[i] = 0;
1894                                                         W_LoadTextureWadFile(&value[j], false);
1895                                                         j = i+1;
1896                                                         if (!k)
1897                                                                 break;
1898                                                 }
1899                                         }
1900                                 }
1901                         }
1902                 }
1903         }
1904 }
1905
1906 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1907 {
1908         loadmodel->brush.entities = NULL;
1909         if (!l->filelen)
1910                 return;
1911         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
1912         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1913         loadmodel->brush.entities[l->filelen] = 0;
1914         if (loadmodel->brush.ishlbsp)
1915                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1916 }
1917
1918
1919 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1920 {
1921         dvertex_t       *in;
1922         mvertex_t       *out;
1923         int                     i, count;
1924
1925         in = (dvertex_t *)(mod_base + l->fileofs);
1926         if (l->filelen % sizeof(*in))
1927                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1928         count = l->filelen / sizeof(*in);
1929         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1930
1931         loadmodel->brushq1.vertexes = out;
1932         loadmodel->brushq1.numvertexes = count;
1933
1934         for ( i=0 ; i<count ; i++, in++, out++)
1935         {
1936                 out->position[0] = LittleFloat(in->point[0]);
1937                 out->position[1] = LittleFloat(in->point[1]);
1938                 out->position[2] = LittleFloat(in->point[2]);
1939         }
1940 }
1941
1942 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1943 // can be used for this
1944 // REMOVEME
1945 int SB_ReadInt (unsigned char **buffer)
1946 {
1947         int     i;
1948         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1949         (*buffer) += 4;
1950         return i;
1951 }
1952
1953 // REMOVEME
1954 float SB_ReadFloat (unsigned char **buffer)
1955 {
1956         union
1957         {
1958                 int             i;
1959                 float   f;
1960         } u;
1961
1962         u.i = SB_ReadInt (buffer);
1963         return u.f;
1964 }
1965
1966 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1967 {
1968         unsigned char           *index;
1969         dmodel_t        *out;
1970         int                     i, j, count;
1971
1972         index = (unsigned char *)(mod_base + l->fileofs);
1973         if (l->filelen % (48+4*hullinfo->filehulls))
1974                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1975
1976         count = l->filelen / (48+4*hullinfo->filehulls);
1977         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1978
1979         loadmodel->brushq1.submodels = out;
1980         loadmodel->brush.numsubmodels = count;
1981
1982         for (i = 0; i < count; i++, out++)
1983         {
1984         // spread out the mins / maxs by a pixel
1985                 out->mins[0] = SB_ReadFloat (&index) - 1;
1986                 out->mins[1] = SB_ReadFloat (&index) - 1;
1987                 out->mins[2] = SB_ReadFloat (&index) - 1;
1988                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1989                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1990                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1991                 out->origin[0] = SB_ReadFloat (&index);
1992                 out->origin[1] = SB_ReadFloat (&index);
1993                 out->origin[2] = SB_ReadFloat (&index);
1994                 for (j = 0; j < hullinfo->filehulls; j++)
1995                         out->headnode[j] = SB_ReadInt (&index);
1996                 out->visleafs = SB_ReadInt (&index);
1997                 out->firstface = SB_ReadInt (&index);
1998                 out->numfaces = SB_ReadInt (&index);
1999         }
2000 }
2001
2002 static void Mod_Q1BSP_LoadEdges(lump_t *l)
2003 {
2004         dedge_t *in;
2005         medge_t *out;
2006         int     i, count;
2007
2008         in = (dedge_t *)(mod_base + l->fileofs);
2009         if (l->filelen % sizeof(*in))
2010                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
2011         count = l->filelen / sizeof(*in);
2012         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2013
2014         loadmodel->brushq1.edges = out;
2015         loadmodel->brushq1.numedges = count;
2016
2017         for ( i=0 ; i<count ; i++, in++, out++)
2018         {
2019                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
2020                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
2021                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
2022                 {
2023                         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);
2024                         if(!loadmodel->brushq1.numvertexes)
2025                                 Host_Error("Mod_Q1BSP_LoadEdges: %s has edges but no vertexes, cannot fix\n", loadmodel->name);
2026
2027                         out->v[0] = 0;
2028                         out->v[1] = 0;
2029                 }
2030         }
2031 }
2032
2033 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
2034 {
2035         texinfo_t *in;
2036         mtexinfo_t *out;
2037         int i, j, k, count, miptex;
2038
2039         in = (texinfo_t *)(mod_base + l->fileofs);
2040         if (l->filelen % sizeof(*in))
2041                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
2042         count = l->filelen / sizeof(*in);
2043         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
2044
2045         loadmodel->brushq1.texinfo = out;
2046         loadmodel->brushq1.numtexinfo = count;
2047
2048         for (i = 0;i < count;i++, in++, out++)
2049         {
2050                 for (k = 0;k < 2;k++)
2051                         for (j = 0;j < 4;j++)
2052                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
2053
2054                 miptex = LittleLong(in->miptex);
2055                 out->flags = LittleLong(in->flags);
2056
2057                 out->texture = NULL;
2058                 if (loadmodel->data_textures)
2059                 {
2060                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
2061                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
2062                         else
2063                                 out->texture = loadmodel->data_textures + miptex;
2064                 }
2065                 if (out->flags & TEX_SPECIAL)
2066                 {
2067                         // if texture chosen is NULL or the shader needs a lightmap,
2068                         // force to notexture water shader
2069                         if (out->texture == NULL)
2070                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
2071                 }
2072                 else
2073                 {
2074                         // if texture chosen is NULL, force to notexture
2075                         if (out->texture == NULL)
2076                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
2077                 }
2078         }
2079 }
2080
2081 #if 0
2082 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
2083 {
2084         int             i, j;
2085         float   *v;
2086
2087         mins[0] = mins[1] = mins[2] = 9999;
2088         maxs[0] = maxs[1] = maxs[2] = -9999;
2089         v = verts;
2090         for (i = 0;i < numverts;i++)
2091         {
2092                 for (j = 0;j < 3;j++, v++)
2093                 {
2094                         if (*v < mins[j])
2095                                 mins[j] = *v;
2096                         if (*v > maxs[j])
2097                                 maxs[j] = *v;
2098                 }
2099         }
2100 }
2101
2102 #define MAX_SUBDIVPOLYTRIANGLES 4096
2103 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
2104
2105 static int subdivpolyverts, subdivpolytriangles;
2106 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2107 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2108
2109 static int subdivpolylookupvert(vec3_t v)
2110 {
2111         int i;
2112         for (i = 0;i < subdivpolyverts;i++)
2113                 if (subdivpolyvert[i][0] == v[0]
2114                  && subdivpolyvert[i][1] == v[1]
2115                  && subdivpolyvert[i][2] == v[2])
2116                         return i;
2117         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2118                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2119         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2120         return subdivpolyverts++;
2121 }
2122
2123 static void SubdividePolygon(int numverts, float *verts)
2124 {
2125         int             i, i1, i2, i3, f, b, c, p;
2126         vec3_t  mins, maxs, front[256], back[256];
2127         float   m, *pv, *cv, dist[256], frac;
2128
2129         if (numverts > 250)
2130                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2131
2132         BoundPoly(numverts, verts, mins, maxs);
2133
2134         for (i = 0;i < 3;i++)
2135         {
2136                 m = (mins[i] + maxs[i]) * 0.5;
2137                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2138                 if (maxs[i] - m < 8)
2139                         continue;
2140                 if (m - mins[i] < 8)
2141                         continue;
2142
2143                 // cut it
2144                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2145                         dist[c] = cv[i] - m;
2146
2147                 f = b = 0;
2148                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2149                 {
2150                         if (dist[p] >= 0)
2151                         {
2152                                 VectorCopy(pv, front[f]);
2153                                 f++;
2154                         }
2155                         if (dist[p] <= 0)
2156                         {
2157                                 VectorCopy(pv, back[b]);
2158                                 b++;
2159                         }
2160                         if (dist[p] == 0 || dist[c] == 0)
2161                                 continue;
2162                         if ((dist[p] > 0) != (dist[c] > 0) )
2163                         {
2164                                 // clip point
2165                                 frac = dist[p] / (dist[p] - dist[c]);
2166                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2167                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2168                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2169                                 f++;
2170                                 b++;
2171                         }
2172                 }
2173
2174                 SubdividePolygon(f, front[0]);
2175                 SubdividePolygon(b, back[0]);
2176                 return;
2177         }
2178
2179         i1 = subdivpolylookupvert(verts);
2180         i2 = subdivpolylookupvert(verts + 3);
2181         for (i = 2;i < numverts;i++)
2182         {
2183                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2184                 {
2185                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2186                         return;
2187                 }
2188
2189                 i3 = subdivpolylookupvert(verts + i * 3);
2190                 subdivpolyindex[subdivpolytriangles][0] = i1;
2191                 subdivpolyindex[subdivpolytriangles][1] = i2;
2192                 subdivpolyindex[subdivpolytriangles][2] = i3;
2193                 i2 = i3;
2194                 subdivpolytriangles++;
2195         }
2196 }
2197
2198 //Breaks a polygon up along axial 64 unit
2199 //boundaries so that turbulent and sky warps
2200 //can be done reasonably.
2201 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2202 {
2203         int i, j;
2204         surfvertex_t *v;
2205         surfmesh_t *mesh;
2206
2207         subdivpolytriangles = 0;
2208         subdivpolyverts = 0;
2209         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2210         if (subdivpolytriangles < 1)
2211                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2212
2213         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2214         mesh->num_vertices = subdivpolyverts;
2215         mesh->num_triangles = subdivpolytriangles;
2216         mesh->vertex = (surfvertex_t *)(mesh + 1);
2217         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2218         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2219
2220         for (i = 0;i < mesh->num_triangles;i++)
2221                 for (j = 0;j < 3;j++)
2222                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2223
2224         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2225         {
2226                 VectorCopy(subdivpolyvert[i], v->v);
2227                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2228                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2229         }
2230 }
2231 #endif
2232
2233 extern cvar_t gl_max_lightmapsize;
2234 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2235 {
2236         dface_t *in;
2237         msurface_t *surface;
2238         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber, lightmapsize, totallightmapsamples;
2239         float texmins[2], texmaxs[2], val;
2240         rtexture_t *lightmaptexture, *deluxemaptexture;
2241
2242         in = (dface_t *)(mod_base + l->fileofs);
2243         if (l->filelen % sizeof(*in))
2244                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2245         count = l->filelen / sizeof(*in);
2246         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2247         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2248
2249         loadmodel->num_surfaces = count;
2250
2251         loadmodel->brushq1.lightmapupdateflags = (unsigned char *)Mem_Alloc(loadmodel->mempool, count*sizeof(unsigned char));
2252
2253         totalverts = 0;
2254         totaltris = 0;
2255         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2256         {
2257                 numedges = (unsigned short)LittleShort(in->numedges);
2258                 totalverts += numedges;
2259                 totaltris += numedges - 2;
2260         }
2261
2262         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2263
2264         lightmaptexture = NULL;
2265         deluxemaptexture = r_texture_blanknormalmap;
2266         lightmapnumber = 1;
2267         lightmapsize = bound(256, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d);
2268         totallightmapsamples = 0;
2269
2270         totalverts = 0;
2271         totaltris = 0;
2272         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2273         {
2274                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2275
2276                 // FIXME: validate edges, texinfo, etc?
2277                 firstedge = LittleLong(in->firstedge);
2278                 numedges = (unsigned short)LittleShort(in->numedges);
2279                 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)
2280                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2281                 i = (unsigned short)LittleShort(in->texinfo);
2282                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2283                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2284                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2285                 surface->texture = surface->lightmapinfo->texinfo->texture;
2286
2287                 planenum = (unsigned short)LittleShort(in->planenum);
2288                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2289                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2290
2291                 //surface->flags = surface->texture->flags;
2292                 //if (LittleShort(in->side))
2293                 //      surface->flags |= SURF_PLANEBACK;
2294                 //surface->plane = loadmodel->brush.data_planes + planenum;
2295
2296                 surface->num_firstvertex = totalverts;
2297                 surface->num_vertices = numedges;
2298                 surface->num_firsttriangle = totaltris;
2299                 surface->num_triangles = numedges - 2;
2300                 totalverts += numedges;
2301                 totaltris += numedges - 2;
2302
2303                 // convert edges back to a normal polygon
2304                 for (i = 0;i < surface->num_vertices;i++)
2305                 {
2306                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2307                         float s, t;
2308                         // note: the q1bsp format does not allow a 0 surfedge (it would have no negative counterpart)
2309                         if (lindex >= 0)
2310                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2311                         else
2312                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2313                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2314                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2315                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2316                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2317                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2318                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2319                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2320                 }
2321
2322                 for (i = 0;i < surface->num_triangles;i++)
2323                 {
2324                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2325                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2326                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2327                 }
2328
2329                 // compile additional data about the surface geometry
2330                 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);
2331                 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);
2332                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2333
2334                 // generate surface extents information
2335                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2336                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2337                 for (i = 1;i < surface->num_vertices;i++)
2338                 {
2339                         for (j = 0;j < 2;j++)
2340                         {
2341                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2342                                 texmins[j] = min(texmins[j], val);
2343                                 texmaxs[j] = max(texmaxs[j], val);
2344                         }
2345                 }
2346                 for (i = 0;i < 2;i++)
2347                 {
2348                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2349                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2350                 }
2351
2352                 smax = surface->lightmapinfo->extents[0] >> 4;
2353                 tmax = surface->lightmapinfo->extents[1] >> 4;
2354                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2355                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2356
2357                 // lighting info
2358                 for (i = 0;i < MAXLIGHTMAPS;i++)
2359                         surface->lightmapinfo->styles[i] = in->styles[i];
2360                 surface->lightmaptexture = NULL;
2361                 surface->deluxemaptexture = r_texture_blanknormalmap;
2362                 i = LittleLong(in->lightofs);
2363                 if (i == -1)
2364                 {
2365                         surface->lightmapinfo->samples = NULL;
2366 #if 1
2367                         // give non-lightmapped water a 1x white lightmap
2368                         if (surface->texture->name[0] == '*' && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2369                         {
2370                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2371                                 surface->lightmapinfo->styles[0] = 0;
2372                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2373                         }
2374 #endif
2375                 }
2376                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2377                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2378                 else // LordHavoc: white lighting (bsp version 29)
2379                 {
2380                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2381                         if (loadmodel->brushq1.nmaplightdata)
2382                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2383                 }
2384
2385                 // check if we should apply a lightmap to this
2386                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2387                 {
2388                         if (ssize > 256 || tsize > 256)
2389                                 Host_Error("Bad surface extents");
2390
2391                         if (lightmapsize < ssize)
2392                                 lightmapsize = ssize;
2393                         if (lightmapsize < tsize)
2394                                 lightmapsize = tsize;
2395
2396                         totallightmapsamples += ssize*tsize;
2397
2398                         // force lightmap upload on first time seeing the surface
2399                         //
2400                         // additionally this is used by the later code to see if a
2401                         // lightmap is needed on this surface (rather than duplicating the
2402                         // logic above)
2403                         loadmodel->brushq1.lightmapupdateflags[surfacenum] = true;
2404                 }
2405         }
2406
2407         // small maps (such as ammo boxes especially) don't need big lightmap
2408         // textures, so this code tries to guess a good size based on
2409         // totallightmapsamples (size of the lightmaps lump basically), as well as
2410         // trying to max out the size if there is a lot of lightmap data to store
2411         // additionally, never choose a lightmapsize that is smaller than the
2412         // largest surface encountered (as it would fail)
2413         i = lightmapsize;
2414         for (lightmapsize = 64; (lightmapsize < i) && (lightmapsize < bound(128, gl_max_lightmapsize.integer, (int)vid.maxtexturesize_2d)) && (totallightmapsamples > lightmapsize*lightmapsize); lightmapsize*=2)
2415                 ;
2416
2417         // now that we've decided the lightmap texture size, we can do the rest
2418         if (cls.state != ca_dedicated)
2419         {
2420                 int stainmapsize = 0;
2421                 mod_alloclightmap_state_t allocState;
2422
2423                 Mod_AllocLightmap_Init(&allocState, lightmapsize, lightmapsize);
2424                 for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2425                 {
2426                         int i, iu, iv, lightmapx = 0, lightmapy = 0;
2427                         float u, v, ubase, vbase, uscale, vscale;
2428
2429                         if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2430                                 continue;
2431
2432                         smax = surface->lightmapinfo->extents[0] >> 4;
2433                         tmax = surface->lightmapinfo->extents[1] >> 4;
2434                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2435                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2436                         stainmapsize += ssize * tsize * 3;
2437
2438                         if (!lightmaptexture || !Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy))
2439                         {
2440                                 // allocate a texture pool if we need it
2441                                 if (loadmodel->texturepool == NULL)
2442                                         loadmodel->texturepool = R_AllocTexturePool();
2443                                 // could not find room, make a new lightmap
2444                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2445                                 if (loadmodel->brushq1.nmaplightdata)
2446                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), lightmapsize, lightmapsize, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2447                                 lightmapnumber++;
2448                                 Mod_AllocLightmap_Reset(&allocState);
2449                                 Mod_AllocLightmap_Block(&allocState, ssize, tsize, &lightmapx, &lightmapy);
2450                         }
2451                         surface->lightmaptexture = lightmaptexture;
2452                         surface->deluxemaptexture = deluxemaptexture;
2453                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2454                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2455
2456                         uscale = 1.0f / (float)lightmapsize;
2457                         vscale = 1.0f / (float)lightmapsize;
2458                         ubase = lightmapx * uscale;
2459                         vbase = lightmapy * vscale;
2460
2461                         for (i = 0;i < surface->num_vertices;i++)
2462                         {
2463                                 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);
2464                                 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);
2465                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2466                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2467                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2468                                 iu = (int) u;
2469                                 iv = (int) v;
2470                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2471                         }
2472                 }
2473
2474                 if (cl_stainmaps.integer)
2475                 {
2476                         // allocate stainmaps for permanent marks on walls and clear white
2477                         unsigned char *stainsamples = NULL;
2478                         stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, stainmapsize);
2479                         memset(stainsamples, 255, stainmapsize);
2480                         // assign pointers
2481                         for (surfacenum = 0, surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, surface++)
2482                         {
2483                                 if (!loadmodel->brushq1.lightmapupdateflags[surfacenum])
2484                                         continue;
2485                                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2486                                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2487                                 surface->lightmapinfo->stainsamples = stainsamples;
2488                                 stainsamples += ssize * tsize * 3;
2489                         }
2490                 }
2491         }
2492
2493         // generate ushort elements array if possible
2494         if (loadmodel->surfmesh.data_element3s)
2495                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2496                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2497 }
2498
2499 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2500 {
2501         //if (node->parent)
2502         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2503         node->parent = parent;
2504         if (node->plane)
2505         {
2506                 // this is a node, recurse to children
2507                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2508                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2509                 // combine supercontents of children
2510                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2511         }
2512         else
2513         {
2514                 int j;
2515                 mleaf_t *leaf = (mleaf_t *)node;
2516                 // if this is a leaf, calculate supercontents mask from all collidable
2517                 // primitives in the leaf (brushes and collision surfaces)
2518                 // also flag if the leaf contains any collision surfaces
2519                 leaf->combinedsupercontents = 0;
2520                 // combine the supercontents values of all brushes in this leaf
2521                 for (j = 0;j < leaf->numleafbrushes;j++)
2522                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2523                 // check if this leaf contains any collision surfaces (q3 patches)
2524                 for (j = 0;j < leaf->numleafsurfaces;j++)
2525                 {
2526                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2527                         if (surface->num_collisiontriangles)
2528                         {
2529                                 leaf->containscollisionsurfaces = true;
2530                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2531                         }
2532                 }
2533         }
2534 }
2535
2536 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2537 {
2538         int                     i, j, count, p;
2539         dnode_t         *in;
2540         mnode_t         *out;
2541
2542         in = (dnode_t *)(mod_base + l->fileofs);
2543         if (l->filelen % sizeof(*in))
2544                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2545         count = l->filelen / sizeof(*in);
2546         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2547
2548         loadmodel->brush.data_nodes = out;
2549         loadmodel->brush.num_nodes = count;
2550
2551         for ( i=0 ; i<count ; i++, in++, out++)
2552         {
2553                 for (j=0 ; j<3 ; j++)
2554                 {
2555                         out->mins[j] = LittleShort(in->mins[j]);
2556                         out->maxs[j] = LittleShort(in->maxs[j]);
2557                 }
2558
2559                 p = LittleLong(in->planenum);
2560                 out->plane = loadmodel->brush.data_planes + p;
2561
2562                 out->firstsurface = (unsigned short)LittleShort(in->firstface);
2563                 out->numsurfaces = (unsigned short)LittleShort(in->numfaces);
2564
2565                 for (j=0 ; j<2 ; j++)
2566                 {
2567                         // LordHavoc: this code supports broken bsp files produced by
2568                         // arguire qbsp which can produce more than 32768 nodes, any value
2569                         // below count is assumed to be a node number, any other value is
2570                         // assumed to be a leaf number
2571                         p = (unsigned short)LittleShort(in->children[j]);
2572                         if (p < count)
2573                         {
2574                                 if (p < loadmodel->brush.num_nodes)
2575                                         out->children[j] = loadmodel->brush.data_nodes + p;
2576                                 else
2577                                 {
2578                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid node index %i (file has only %i nodes)\n", p, loadmodel->brush.num_nodes);
2579                                         // map it to the solid leaf
2580                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2581                                 }
2582                         }
2583                         else
2584                         {
2585                                 // note this uses 65535 intentionally, -1 is leaf 0
2586                                 p = 65535 - p;
2587                                 if (p < loadmodel->brush.num_leafs)
2588                                         out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + p);
2589                                 else
2590                                 {
2591                                         Con_Printf("Mod_Q1BSP_LoadNodes: invalid leaf index %i (file has only %i leafs)\n", p, loadmodel->brush.num_leafs);
2592                                         // map it to the solid leaf
2593                                         out->children[j] = (mnode_t *)loadmodel->brush.data_leafs;
2594                                 }
2595                         }
2596                 }
2597         }
2598
2599         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2600 }
2601
2602 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2603 {
2604         dleaf_t *in;
2605         mleaf_t *out;
2606         int i, j, count, p;
2607
2608         in = (dleaf_t *)(mod_base + l->fileofs);
2609         if (l->filelen % sizeof(*in))
2610                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2611         count = l->filelen / sizeof(*in);
2612         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2613
2614         loadmodel->brush.data_leafs = out;
2615         loadmodel->brush.num_leafs = count;
2616         // get visleafs from the submodel data
2617         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2618         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2619         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2620         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2621
2622         for ( i=0 ; i<count ; i++, in++, out++)
2623         {
2624                 for (j=0 ; j<3 ; j++)
2625                 {
2626                         out->mins[j] = LittleShort(in->mins[j]);
2627                         out->maxs[j] = LittleShort(in->maxs[j]);
2628                 }
2629
2630                 // FIXME: this function could really benefit from some error checking
2631
2632                 out->contents = LittleLong(in->contents);
2633
2634                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + (unsigned short)LittleShort(in->firstmarksurface);
2635                 out->numleafsurfaces = (unsigned short)LittleShort(in->nummarksurfaces);
2636                 if ((unsigned short)LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2637                 {
2638                         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);
2639                         out->firstleafsurface = NULL;
2640                         out->numleafsurfaces = 0;
2641                 }
2642
2643                 out->clusterindex = i - 1;
2644                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2645                         out->clusterindex = -1;
2646
2647                 p = LittleLong(in->visofs);
2648                 // ignore visofs errors on leaf 0 (solid)
2649                 if (p >= 0 && out->clusterindex >= 0)
2650                 {
2651                         if (p >= loadmodel->brushq1.num_compressedpvs)
2652                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2653                         else
2654                                 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);
2655                 }
2656
2657                 for (j = 0;j < 4;j++)
2658                         out->ambient_sound_level[j] = in->ambient_level[j];
2659
2660                 // FIXME: Insert caustics here
2661         }
2662 }
2663
2664 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2665 {
2666         int i, j;
2667         mleaf_t *leaf;
2668         const unsigned char *pvs;
2669         // if there's no vis data, assume supported (because everything is visible all the time)
2670         if (!loadmodel->brush.data_pvsclusters)
2671                 return true;
2672         // check all liquid leafs to see if they can see into empty leafs, if any
2673         // can we can assume this map supports r_wateralpha
2674         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2675         {
2676                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && leaf->clusterindex >= 0)
2677                 {
2678                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2679                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2680                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2681                                         return true;
2682                 }
2683         }
2684         return false;
2685 }
2686
2687 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2688 {
2689         dclipnode_t *in;
2690         mclipnode_t *out;
2691         int                     i, count;
2692         hull_t          *hull;
2693
2694         in = (dclipnode_t *)(mod_base + l->fileofs);
2695         if (l->filelen % sizeof(*in))
2696                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2697         count = l->filelen / sizeof(*in);
2698         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2699
2700         loadmodel->brushq1.clipnodes = out;
2701         loadmodel->brushq1.numclipnodes = count;
2702
2703         for (i = 1; i < MAX_MAP_HULLS; i++)
2704         {
2705                 hull = &loadmodel->brushq1.hulls[i];
2706                 hull->clipnodes = out;
2707                 hull->firstclipnode = 0;
2708                 hull->lastclipnode = count-1;
2709                 hull->planes = loadmodel->brush.data_planes;
2710                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2711                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2712                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2713                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2714                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2715                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2716                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2717         }
2718
2719         for (i=0 ; i<count ; i++, out++, in++)
2720         {
2721                 out->planenum = LittleLong(in->planenum);
2722                 // LordHavoc: this code supports arguire qbsp's broken clipnodes indices (more than 32768 clipnodes), values above count are assumed to be contents values
2723                 out->children[0] = (unsigned short)LittleShort(in->children[0]);
2724                 out->children[1] = (unsigned short)LittleShort(in->children[1]);
2725                 if (out->children[0] >= count)
2726                         out->children[0] -= 65536;
2727                 if (out->children[1] >= count)
2728                         out->children[1] -= 65536;
2729                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2730                         Host_Error("Corrupt clipping hull(out of range planenum)");
2731         }
2732 }
2733
2734 //Duplicate the drawing hull structure as a clipping hull
2735 static void Mod_Q1BSP_MakeHull0(void)
2736 {
2737         mnode_t         *in;
2738         mclipnode_t *out;
2739         int                     i;
2740         hull_t          *hull;
2741
2742         hull = &loadmodel->brushq1.hulls[0];
2743
2744         in = loadmodel->brush.data_nodes;
2745         out = (mclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(*out));
2746
2747         hull->clipnodes = out;
2748         hull->firstclipnode = 0;
2749         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2750         hull->planes = loadmodel->brush.data_planes;
2751
2752         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2753         {
2754                 out->planenum = in->plane - loadmodel->brush.data_planes;
2755                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2756                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2757         }
2758 }
2759
2760 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2761 {
2762         int i, j;
2763         short *in;
2764
2765         in = (short *)(mod_base + l->fileofs);
2766         if (l->filelen % sizeof(*in))
2767                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2768         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2769         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2770
2771         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2772         {
2773                 j = (unsigned short) LittleShort(in[i]);
2774                 if (j >= loadmodel->num_surfaces)
2775                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2776                 loadmodel->brush.data_leafsurfaces[i] = j;
2777         }
2778 }
2779
2780 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2781 {
2782         int             i;
2783         int             *in;
2784
2785         in = (int *)(mod_base + l->fileofs);
2786         if (l->filelen % sizeof(*in))
2787                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2788         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2789         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2790
2791         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2792                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2793 }
2794
2795
2796 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2797 {
2798         int                     i;
2799         mplane_t        *out;
2800         dplane_t        *in;
2801
2802         in = (dplane_t *)(mod_base + l->fileofs);
2803         if (l->filelen % sizeof(*in))
2804                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2805
2806         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2807         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2808
2809         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2810         {
2811                 out->normal[0] = LittleFloat(in->normal[0]);
2812                 out->normal[1] = LittleFloat(in->normal[1]);
2813                 out->normal[2] = LittleFloat(in->normal[2]);
2814                 out->dist = LittleFloat(in->dist);
2815
2816                 PlaneClassify(out);
2817         }
2818 }
2819
2820 static void Mod_Q1BSP_LoadMapBrushes(void)
2821 {
2822 #if 0
2823 // unfinished
2824         int submodel, numbrushes;
2825         qboolean firstbrush;
2826         char *text, *maptext;
2827         char mapfilename[MAX_QPATH];
2828         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2829         strlcat (mapfilename, ".map", sizeof (mapfilename));
2830         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2831         if (!maptext)
2832                 return;
2833         text = maptext;
2834         if (!COM_ParseToken_Simple(&data, false, false))
2835                 return; // error
2836         submodel = 0;
2837         for (;;)
2838         {
2839                 if (!COM_ParseToken_Simple(&data, false, false))
2840                         break;
2841                 if (com_token[0] != '{')
2842                         return; // error
2843                 // entity
2844                 firstbrush = true;
2845                 numbrushes = 0;
2846                 maxbrushes = 256;
2847                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2848                 for (;;)
2849                 {
2850                         if (!COM_ParseToken_Simple(&data, false, false))
2851                                 return; // error
2852                         if (com_token[0] == '}')
2853                                 break; // end of entity
2854                         if (com_token[0] == '{')
2855                         {
2856                                 // brush
2857                                 if (firstbrush)
2858                                 {
2859                                         if (submodel)
2860                                         {
2861                                                 if (submodel > loadmodel->brush.numsubmodels)
2862                                                 {
2863                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2864                                                         model = NULL;
2865                                                 }
2866                                                 else
2867                                                         model = loadmodel->brush.submodels[submodel];
2868                                         }
2869                                         else
2870                                                 model = loadmodel;
2871                                 }
2872                                 for (;;)
2873                                 {
2874                                         if (!COM_ParseToken_Simple(&data, false, false))
2875                                                 return; // error
2876                                         if (com_token[0] == '}')
2877                                                 break; // end of brush
2878                                         // each brush face should be this format:
2879                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2880                                         // FIXME: support hl .map format
2881                                         for (pointnum = 0;pointnum < 3;pointnum++)
2882                                         {
2883                                                 COM_ParseToken_Simple(&data, false, false);
2884                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2885                                                 {
2886                                                         COM_ParseToken_Simple(&data, false, false);
2887                                                         point[pointnum][componentnum] = atof(com_token);
2888                                                 }
2889                                                 COM_ParseToken_Simple(&data, false, false);
2890                                         }
2891                                         COM_ParseToken_Simple(&data, false, false);
2892                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2893                                         COM_ParseToken_Simple(&data, false, false);
2894                                         //scroll_s = atof(com_token);
2895                                         COM_ParseToken_Simple(&data, false, false);
2896                                         //scroll_t = atof(com_token);
2897                                         COM_ParseToken_Simple(&data, false, false);
2898                                         //rotate = atof(com_token);
2899                                         COM_ParseToken_Simple(&data, false, false);
2900                                         //scale_s = atof(com_token);
2901                                         COM_ParseToken_Simple(&data, false, false);
2902                                         //scale_t = atof(com_token);
2903                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2904                                         VectorNormalizeDouble(planenormal);
2905                                         planedist = DotProduct(point[0], planenormal);
2906                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2907                                 }
2908                                 continue;
2909                         }
2910                 }
2911         }
2912 #endif
2913 }
2914
2915
2916 #define MAX_PORTALPOINTS 64
2917
2918 typedef struct portal_s
2919 {
2920         mplane_t plane;
2921         mnode_t *nodes[2];              // [0] = front side of plane
2922         struct portal_s *next[2];
2923         int numpoints;
2924         double points[3*MAX_PORTALPOINTS];
2925         struct portal_s *chain; // all portals are linked into a list
2926 }
2927 portal_t;
2928
2929 static memexpandablearray_t portalarray;
2930
2931 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2932 {
2933         // process only nodes (leafs already had their box calculated)
2934         if (!node->plane)
2935                 return;
2936
2937         // calculate children first
2938         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2939         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2940
2941         // make combined bounding box from children
2942         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2943         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2944         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2945         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2946         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2947         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2948 }
2949
2950 static void Mod_Q1BSP_FinalizePortals(void)
2951 {
2952         int i, j, numportals, numpoints, portalindex, portalrange = Mem_ExpandableArray_IndexRange(&portalarray);
2953         portal_t *p;
2954         mportal_t *portal;
2955         mvertex_t *point;
2956         mleaf_t *leaf, *endleaf;
2957
2958         // tally up portal and point counts and recalculate bounding boxes for all
2959         // leafs (because qbsp is very sloppy)
2960         leaf = loadmodel->brush.data_leafs;
2961         endleaf = leaf + loadmodel->brush.num_leafs;
2962         for (;leaf < endleaf;leaf++)
2963         {
2964                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2965                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2966         }
2967         numportals = 0;
2968         numpoints = 0;
2969         for (portalindex = 0;portalindex < portalrange;portalindex++)
2970         {
2971                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
2972                 if (!p)
2973                         continue;
2974                 // note: this check must match the one below or it will usually corrupt memory
2975                 // 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
2976                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2977                 {
2978                         numportals += 2;
2979                         numpoints += p->numpoints * 2;
2980                 }
2981         }
2982         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2983         loadmodel->brush.num_portals = numportals;
2984         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2985         loadmodel->brush.num_portalpoints = numpoints;
2986         // clear all leaf portal chains
2987         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2988                 loadmodel->brush.data_leafs[i].portals = NULL;
2989         // process all portals in the global portal chain, while freeing them
2990         portal = loadmodel->brush.data_portals;
2991         point = loadmodel->brush.data_portalpoints;
2992         for (portalindex = 0;portalindex < portalrange;portalindex++)
2993         {
2994                 p = (portal_t*)Mem_ExpandableArray_RecordAtIndex(&portalarray, portalindex);
2995                 if (!p)
2996                         continue;
2997                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2998                 {
2999                         // note: this check must match the one above or it will usually corrupt memory
3000                         // 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
3001                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
3002                         {
3003                                 // first make the back to front portal(forward portal)
3004                                 portal->points = point;
3005                                 portal->numpoints = p->numpoints;
3006                                 portal->plane.dist = p->plane.dist;
3007                                 VectorCopy(p->plane.normal, portal->plane.normal);
3008                                 portal->here = (mleaf_t *)p->nodes[1];
3009                                 portal->past = (mleaf_t *)p->nodes[0];
3010                                 // copy points
3011                                 for (j = 0;j < portal->numpoints;j++)
3012                                 {
3013                                         VectorCopy(p->points + j*3, point->position);
3014                                         point++;
3015                                 }
3016                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3017                                 PlaneClassify(&portal->plane);
3018
3019                                 // link into leaf's portal chain
3020                                 portal->next = portal->here->portals;
3021                                 portal->here->portals = portal;
3022
3023                                 // advance to next portal
3024                                 portal++;
3025
3026                                 // then make the front to back portal(backward portal)
3027                                 portal->points = point;
3028                                 portal->numpoints = p->numpoints;
3029                                 portal->plane.dist = -p->plane.dist;
3030                                 VectorNegate(p->plane.normal, portal->plane.normal);
3031                                 portal->here = (mleaf_t *)p->nodes[0];
3032                                 portal->past = (mleaf_t *)p->nodes[1];
3033                                 // copy points
3034                                 for (j = portal->numpoints - 1;j >= 0;j--)
3035                                 {
3036                                         VectorCopy(p->points + j*3, point->position);
3037                                         point++;
3038                                 }
3039                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
3040                                 PlaneClassify(&portal->plane);
3041
3042                                 // link into leaf's portal chain
3043                                 portal->next = portal->here->portals;
3044                                 portal->here->portals = portal;
3045
3046                                 // advance to next portal
3047                                 portal++;
3048                         }
3049                         // add the portal's polygon points to the leaf bounding boxes
3050                         for (i = 0;i < 2;i++)
3051                         {
3052                                 leaf = (mleaf_t *)p->nodes[i];
3053                                 for (j = 0;j < p->numpoints;j++)
3054                                 {
3055                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
3056                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
3057                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
3058                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
3059                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
3060                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
3061                                 }
3062                         }
3063                 }
3064         }
3065         // now recalculate the node bounding boxes from the leafs
3066         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3067 }
3068
3069 /*
3070 =============
3071 AddPortalToNodes
3072 =============
3073 */
3074 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
3075 {
3076         if (!front)
3077                 Host_Error("AddPortalToNodes: NULL front node");
3078         if (!back)
3079                 Host_Error("AddPortalToNodes: NULL back node");
3080         if (p->nodes[0] || p->nodes[1])
3081                 Host_Error("AddPortalToNodes: already included");
3082         // 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
3083
3084         p->nodes[0] = front;
3085         p->next[0] = (portal_t *)front->portals;
3086         front->portals = (mportal_t *)p;
3087
3088         p->nodes[1] = back;
3089         p->next[1] = (portal_t *)back->portals;
3090         back->portals = (mportal_t *)p;
3091 }
3092
3093 /*
3094 =============
3095 RemovePortalFromNode
3096 =============
3097 */
3098 static void RemovePortalFromNodes(portal_t *portal)
3099 {
3100         int i;
3101         mnode_t *node;
3102         void **portalpointer;
3103         portal_t *t;
3104         for (i = 0;i < 2;i++)
3105         {
3106                 node = portal->nodes[i];
3107
3108                 portalpointer = (void **) &node->portals;
3109                 while (1)
3110                 {
3111                         t = (portal_t *)*portalpointer;
3112                         if (!t)
3113                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
3114
3115                         if (t == portal)
3116                         {
3117                                 if (portal->nodes[0] == node)
3118                                 {
3119                                         *portalpointer = portal->next[0];
3120                                         portal->nodes[0] = NULL;
3121                                 }
3122                                 else if (portal->nodes[1] == node)
3123                                 {
3124                                         *portalpointer = portal->next[1];
3125                                         portal->nodes[1] = NULL;
3126                                 }
3127                                 else
3128                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3129                                 break;
3130                         }
3131
3132                         if (t->nodes[0] == node)
3133                                 portalpointer = (void **) &t->next[0];
3134                         else if (t->nodes[1] == node)
3135                                 portalpointer = (void **) &t->next[1];
3136                         else
3137                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
3138                 }
3139         }
3140 }
3141
3142 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
3143 static double *portalpointsbuffer;
3144 static int portalpointsbufferoffset;
3145 static int portalpointsbuffersize;
3146 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
3147 {
3148         int i, side;
3149         mnode_t *front, *back, *other_node;
3150         mplane_t clipplane, *plane;
3151         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
3152         int numfrontpoints, numbackpoints;
3153         double *frontpoints, *backpoints;
3154
3155         // if a leaf, we're done
3156         if (!node->plane)
3157                 return;
3158
3159         // get some space for our clipping operations to use
3160         if (portalpointsbuffersize < portalpointsbufferoffset + 6*MAX_PORTALPOINTS)
3161         {
3162                 portalpointsbuffersize = portalpointsbufferoffset * 2;
3163                 portalpointsbuffer = Mem_Realloc(loadmodel->mempool, portalpointsbuffer, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3164         }
3165         frontpoints = portalpointsbuffer + portalpointsbufferoffset;
3166         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3167         backpoints = portalpointsbuffer + portalpointsbufferoffset;
3168         portalpointsbufferoffset += 3*MAX_PORTALPOINTS;
3169
3170         plane = node->plane;
3171
3172         front = node->children[0];
3173         back = node->children[1];
3174         if (front == back)
3175                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3176
3177         // create the new portal by generating a polygon for the node plane,
3178         // and clipping it by all of the other portals(which came from nodes above this one)
3179         nodeportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3180         nodeportal->plane = *plane;
3181
3182         // 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)
3183         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);
3184         nodeportal->numpoints = 4;
3185         side = 0;       // shut up compiler warning
3186         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3187         {
3188                 clipplane = portal->plane;
3189                 if (portal->nodes[0] == portal->nodes[1])
3190                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3191                 if (portal->nodes[0] == node)
3192                         side = 0;
3193                 else if (portal->nodes[1] == node)
3194                 {
3195                         clipplane.dist = -clipplane.dist;
3196                         VectorNegate(clipplane.normal, clipplane.normal);
3197                         side = 1;
3198                 }
3199                 else
3200                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3201
3202                 for (i = 0;i < nodeportal->numpoints*3;i++)
3203                         frontpoints[i] = nodeportal->points[i];
3204                 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);
3205                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3206                         break;
3207         }
3208
3209         if (nodeportal->numpoints < 3)
3210         {
3211                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3212                 nodeportal->numpoints = 0;
3213         }
3214         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3215         {
3216                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3217                 nodeportal->numpoints = 0;
3218         }
3219
3220         AddPortalToNodes(nodeportal, front, back);
3221
3222         // split the portals of this node along this node's plane and assign them to the children of this node
3223         // (migrating the portals downward through the tree)
3224         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3225         {
3226                 if (portal->nodes[0] == portal->nodes[1])
3227                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3228                 if (portal->nodes[0] == node)
3229                         side = 0;
3230                 else if (portal->nodes[1] == node)
3231                         side = 1;
3232                 else
3233                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3234                 nextportal = portal->next[side];
3235                 if (!portal->numpoints)
3236                         continue;
3237
3238                 other_node = portal->nodes[!side];
3239                 RemovePortalFromNodes(portal);
3240
3241                 // cut the portal into two portals, one on each side of the node plane
3242                 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);
3243
3244                 if (!numfrontpoints)
3245                 {
3246                         if (side == 0)
3247                                 AddPortalToNodes(portal, back, other_node);
3248                         else
3249                                 AddPortalToNodes(portal, other_node, back);
3250                         continue;
3251                 }
3252                 if (!numbackpoints)
3253                 {
3254                         if (side == 0)
3255                                 AddPortalToNodes(portal, front, other_node);
3256                         else
3257                                 AddPortalToNodes(portal, other_node, front);
3258                         continue;
3259                 }
3260
3261                 // the portal is split
3262                 splitportal = (portal_t *)Mem_ExpandableArray_AllocRecord(&portalarray);
3263                 temp = splitportal->chain;
3264                 *splitportal = *portal;
3265                 splitportal->chain = temp;
3266                 for (i = 0;i < numbackpoints*3;i++)
3267                         splitportal->points[i] = backpoints[i];
3268                 splitportal->numpoints = numbackpoints;
3269                 for (i = 0;i < numfrontpoints*3;i++)
3270                         portal->points[i] = frontpoints[i];
3271                 portal->numpoints = numfrontpoints;
3272
3273                 if (side == 0)
3274                 {
3275                         AddPortalToNodes(portal, front, other_node);
3276                         AddPortalToNodes(splitportal, back, other_node);
3277                 }
3278                 else
3279                 {
3280                         AddPortalToNodes(portal, other_node, front);
3281                         AddPortalToNodes(splitportal, other_node, back);
3282                 }
3283         }
3284
3285         Mod_Q1BSP_RecursiveNodePortals(front);
3286         Mod_Q1BSP_RecursiveNodePortals(back);
3287
3288         portalpointsbufferoffset -= 6*MAX_PORTALPOINTS;
3289 }
3290
3291 static void Mod_Q1BSP_MakePortals(void)
3292 {
3293         Mem_ExpandableArray_NewArray(&portalarray, loadmodel->mempool, sizeof(portal_t), 1020*1024/sizeof(portal_t));
3294         portalpointsbufferoffset = 0;
3295         portalpointsbuffersize = 6*MAX_PORTALPOINTS*128;
3296         portalpointsbuffer = Mem_Alloc(loadmodel->mempool, portalpointsbuffersize * sizeof(*portalpointsbuffer));
3297         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes + loadmodel->brushq1.hulls[0].firstclipnode);
3298         Mem_Free(portalpointsbuffer);
3299         portalpointsbuffer = NULL;
3300         portalpointsbufferoffset = 0;
3301         portalpointsbuffersize = 0;
3302         Mod_Q1BSP_FinalizePortals();
3303         Mem_ExpandableArray_FreeArray(&portalarray);
3304 }
3305
3306 //Returns PVS data for a given point
3307 //(note: can return NULL)
3308 static unsigned char *Mod_Q1BSP_GetPVS(dp_model_t *model, const vec3_t p)
3309 {
3310         mnode_t *node;
3311         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
3312         while (node->plane)
3313                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3314         if (((mleaf_t *)node)->clusterindex >= 0)
3315                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3316         else
3317                 return NULL;
3318 }
3319
3320 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)
3321 {
3322         while (node->plane)
3323         {
3324                 float d = PlaneDiff(org, node->plane);
3325                 if (d > radius)
3326                         node = node->children[0];
3327                 else if (d < -radius)
3328                         node = node->children[1];
3329                 else
3330                 {
3331                         // go down both sides
3332                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3333                         node = node->children[1];
3334                 }
3335         }
3336         // if this leaf is in a cluster, accumulate the pvs bits
3337         if (((mleaf_t *)node)->clusterindex >= 0)
3338         {
3339                 int i;
3340                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3341                 for (i = 0;i < pvsbytes;i++)
3342                         pvsbuffer[i] |= pvs[i];
3343         }
3344 }
3345
3346 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3347 //of the given point.
3348 static int Mod_Q1BSP_FatPVS(dp_model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength, qboolean merge)
3349 {
3350         int bytes = model->brush.num_pvsclusterbytes;
3351         bytes = min(bytes, pvsbufferlength);
3352         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3353         {
3354                 memset(pvsbuffer, 0xFF, bytes);
3355                 return bytes;
3356         }
3357         if (!merge)
3358                 memset(pvsbuffer, 0, bytes);
3359         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
3360         return bytes;
3361 }
3362
3363 static void Mod_Q1BSP_RoundUpToHullSize(dp_model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3364 {
3365         vec3_t size;
3366         const hull_t *hull;
3367
3368         VectorSubtract(inmaxs, inmins, size);
3369         if (cmodel->brush.ishlbsp)
3370         {
3371                 if (size[0] < 3)
3372                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3373                 else if (size[0] <= 32)
3374                 {
3375                         if (size[2] < 54) // pick the nearest of 36 or 72
3376                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3377                         else
3378                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3379                 }
3380                 else
3381                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3382         }
3383         else
3384         {
3385                 if (size[0] < 3)
3386                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3387                 else if (size[0] <= 32)
3388                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3389                 else
3390                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3391         }
3392         VectorCopy(inmins, outmins);
3393         VectorAdd(inmins, hull->clip_size, outmaxs);
3394 }
3395
3396 void Mod_Q1BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
3397 {
3398         int i, j, k;
3399         dheader_t *header;
3400         dmodel_t *bm;
3401         mempool_t *mainmempool;
3402         float dist, modelyawradius, modelradius;
3403         msurface_t *surface;
3404         int numshadowmeshtriangles;
3405         hullinfo_t hullinfo;
3406         int totalstylesurfaces, totalstyles, stylecounts[256], remapstyles[256];
3407         model_brush_lightstyleinfo_t styleinfo[256];
3408         unsigned char *datapointer;
3409
3410         mod->modeldatatypestring = "Q1BSP";
3411
3412         mod->type = mod_brushq1;
3413
3414         header = (dheader_t *)buffer;
3415
3416         i = LittleLong(header->version);
3417         if (i != BSPVERSION && i != 30)
3418                 Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3419         mod->brush.ishlbsp = i == 30;
3420
3421 // fill in hull info
3422         VectorClear (hullinfo.hullsizes[0][0]);
3423         VectorClear (hullinfo.hullsizes[0][1]);
3424         if (mod->brush.ishlbsp)
3425         {
3426                 mod->modeldatatypestring = "HLBSP";
3427
3428                 hullinfo.filehulls = 4;
3429                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3430                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3431                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3432                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3433                 VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3434                 VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3435         }
3436         else
3437         {
3438                 hullinfo.filehulls = 4;
3439                 VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3440                 VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3441                 VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3442                 VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3443         }
3444
3445 // read lumps
3446         mod_base = (unsigned char*)buffer;
3447         for (i = 0; i < HEADER_LUMPS; i++)
3448         {
3449                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3450                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3451         }
3452
3453         mod->soundfromcenter = true;
3454         mod->TraceBox = Mod_Q1BSP_TraceBox;
3455         mod->TraceLine = Mod_Q1BSP_TraceLine;
3456         mod->TracePoint = Mod_Q1BSP_TracePoint;
3457         mod->PointSuperContents = Mod_Q1BSP_PointSuperContents;
3458         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3459         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3460         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3461         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3462         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3463         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3464         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3465         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3466         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3467         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3468         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3469         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3470         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3471         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3472         mod->Draw = R_Q1BSP_Draw;
3473         mod->DrawDepth = R_Q1BSP_DrawDepth;
3474         mod->DrawDebug = R_Q1BSP_DrawDebug;
3475         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
3476         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3477         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
3478         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
3479         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3480         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3481         mod->DrawLight = R_Q1BSP_DrawLight;
3482
3483 // load into heap
3484
3485         mod->brush.qw_md4sum = 0;
3486         mod->brush.qw_md4sum2 = 0;
3487         for (i = 0;i < HEADER_LUMPS;i++)
3488         {
3489                 if (i == LUMP_ENTITIES)
3490                         continue;
3491                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3492                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3493                         continue;
3494                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3495         }
3496
3497         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3498         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3499         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3500         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3501         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3502         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3503         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3504         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3505         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3506         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3507         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3508         // load submodels before leafs because they contain the number of vis leafs
3509         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3510         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3511         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3512         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3513
3514         // check if the map supports transparent water rendering
3515         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3516
3517         if (mod->brushq1.data_compressedpvs)
3518                 Mem_Free(mod->brushq1.data_compressedpvs);
3519         mod->brushq1.data_compressedpvs = NULL;
3520         mod->brushq1.num_compressedpvs = 0;
3521
3522         Mod_Q1BSP_MakeHull0();
3523         Mod_Q1BSP_MakePortals();
3524
3525         mod->numframes = 2;             // regular and alternate animation
3526         mod->numskins = 1;
3527
3528         mainmempool = mod->mempool;
3529
3530         // make a single combined shadow mesh to allow optimized shadow volume creation
3531         numshadowmeshtriangles = 0;
3532         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3533         {
3534                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3535                 numshadowmeshtriangles += surface->num_triangles;
3536         }
3537         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3538         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3539                 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));
3540         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3541         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3542
3543         if (loadmodel->brush.numsubmodels)
3544                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
3545
3546         // LordHavoc: to clear the fog around the original quake submodel code, I
3547         // will explain:
3548         // first of all, some background info on the submodels:
3549         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3550         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3551         // now the weird for loop itself:
3552         // the loop functions in an odd way, on each iteration it sets up the
3553         // current 'mod' model (which despite the confusing code IS the model of
3554         // the number i), at the end of the loop it duplicates the model to become
3555         // the next submodel, and loops back to set up the new submodel.
3556
3557         // LordHavoc: now the explanation of my sane way (which works identically):
3558         // set up the world model, then on each submodel copy from the world model
3559         // and set up the submodel with the respective model info.
3560         totalstylesurfaces = 0;
3561         totalstyles = 0;
3562         for (i = 0;i < mod->brush.numsubmodels;i++)
3563         {
3564                 memset(stylecounts, 0, sizeof(stylecounts));
3565                 for (k = 0;k < mod->brushq1.submodels[i].numfaces;k++)
3566                 {
3567                         surface = mod->data_surfaces + mod->brushq1.submodels[i].firstface + k;
3568                         for (j = 0;j < MAXLIGHTMAPS;j++)
3569                                 stylecounts[surface->lightmapinfo->styles[j]]++;
3570                 }
3571                 for (k = 0;k < 255;k++)
3572                 {
3573                         totalstyles++;
3574                         if (stylecounts[k])
3575                                 totalstylesurfaces += stylecounts[k];
3576                 }
3577         }
3578         datapointer = (unsigned char *)Mem_Alloc(mod->mempool, mod->num_surfaces * sizeof(int) + totalstyles * sizeof(model_brush_lightstyleinfo_t) + totalstylesurfaces * sizeof(int *));
3579         for (i = 0;i < mod->brush.numsubmodels;i++)
3580         {
3581                 // LordHavoc: this code was originally at the end of this loop, but
3582                 // has been transformed to something more readable at the start here.
3583
3584                 if (i > 0)
3585                 {
3586                         char name[10];
3587                         // duplicate the basic information
3588                         dpsnprintf(name, sizeof(name), "*%i", i);
3589                         mod = Mod_FindName(name, loadmodel->name);
3590                         // copy the base model to this one
3591                         *mod = *loadmodel;
3592                         // rename the clone back to its proper name
3593                         strlcpy(mod->name, name, sizeof(mod->name));
3594                         mod->brush.parentmodel = loadmodel;
3595                         // textures and memory belong to the main model
3596                         mod->texturepool = NULL;
3597                         mod->mempool = NULL;
3598                         mod->brush.GetPVS = NULL;
3599                         mod->brush.FatPVS = NULL;
3600                         mod->brush.BoxTouchingPVS = NULL;
3601                         mod->brush.BoxTouchingLeafPVS = NULL;
3602                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3603                         mod->brush.FindBoxClusters = NULL;
3604                         mod->brush.LightPoint = NULL;
3605                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3606                 }
3607
3608                 mod->brush.submodel = i;
3609
3610                 if (loadmodel->brush.submodels)
3611                         loadmodel->brush.submodels[i] = mod;
3612
3613                 bm = &mod->brushq1.submodels[i];
3614
3615                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3616                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3617                 {
3618                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3619                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3620                 }
3621
3622                 mod->firstmodelsurface = bm->firstface;
3623                 mod->nummodelsurfaces = bm->numfaces;
3624
3625                 // set node/leaf parents for this submodel
3626                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(mod->brush.data_nodes + mod->brushq1.hulls[0].firstclipnode, NULL);
3627
3628                 // make the model surface list (used by shadowing/lighting)
3629                 mod->sortedmodelsurfaces = (int *)datapointer;datapointer += mod->nummodelsurfaces * sizeof(int);
3630                 Mod_MakeSortedSurfaces(mod);
3631
3632                 // copy the submodel bounds, then enlarge the yaw and rotated bounds according to radius
3633                 // (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)
3634                 VectorCopy(bm->mins, mod->normalmins);
3635                 VectorCopy(bm->maxs, mod->normalmaxs);
3636                 dist = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
3637                 modelyawradius = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
3638                 modelyawradius = dist*dist+modelyawradius*modelyawradius;
3639                 modelradius = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
3640                 modelradius = modelyawradius + modelradius * modelradius;
3641                 modelyawradius = sqrt(modelyawradius);
3642                 modelradius = sqrt(modelradius);
3643                 mod->yawmins[0] = mod->yawmins[1] = -modelyawradius;
3644                 mod->yawmins[2] = mod->normalmins[2];
3645                 mod->yawmaxs[0] = mod->yawmaxs[1] =  modelyawradius;
3646                 mod->yawmaxs[2] = mod->normalmaxs[2];
3647                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3648                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] =  modelradius;
3649                 mod->radius = modelradius;
3650                 mod->radius2 = modelradius * modelradius;
3651
3652                 // this gets altered below if sky or water is used
3653                 mod->DrawSky = NULL;
3654                 mod->DrawAddWaterPlanes = NULL;
3655
3656                 // scan surfaces for sky and water and flag the submodel as possessing these features or not
3657                 // build lightstyle lists for quick marking of dirty lightmaps when lightstyles flicker
3658                 if (mod->nummodelsurfaces)
3659                 {
3660                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3661                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3662                                         break;
3663                         if (j < mod->nummodelsurfaces)
3664                                 mod->DrawSky = R_Q1BSP_DrawSky;
3665
3666                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3667                                 if (surface->texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
3668                                         break;
3669                         if (j < mod->nummodelsurfaces)
3670                                 mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
3671
3672                         // build lightstyle update chains
3673                         // (used to rapidly mark lightmapupdateflags on many surfaces
3674                         // when d_lightstylevalue changes)
3675                         memset(stylecounts, 0, sizeof(stylecounts));
3676                         for (k = 0;k < mod->nummodelsurfaces;k++)
3677                         {
3678                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3679                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3680                                         stylecounts[surface->lightmapinfo->styles[j]]++;
3681                         }
3682                         mod->brushq1.num_lightstyles = 0;
3683                         for (k = 0;k < 255;k++)
3684                         {
3685                                 if (stylecounts[k])
3686                                 {
3687                                         styleinfo[mod->brushq1.num_lightstyles].style = k;
3688                                         styleinfo[mod->brushq1.num_lightstyles].value = 0;
3689                                         styleinfo[mod->brushq1.num_lightstyles].numsurfaces = 0;
3690                                         styleinfo[mod->brushq1.num_lightstyles].surfacelist = (int *)datapointer;datapointer += stylecounts[k] * sizeof(int);
3691                                         remapstyles[k] = mod->brushq1.num_lightstyles;
3692                                         mod->brushq1.num_lightstyles++;
3693                                 }
3694                         }
3695                         for (k = 0;k < mod->nummodelsurfaces;k++)
3696                         {
3697                                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
3698                                 for (j = 0;j < MAXLIGHTMAPS;j++)
3699                                 {
3700                                         if (surface->lightmapinfo->styles[j] != 255)
3701                                         {
3702                                                 int r = remapstyles[surface->lightmapinfo->styles[j]];
3703                                                 styleinfo[r].surfacelist[styleinfo[r].numsurfaces++] = mod->firstmodelsurface + k;
3704                                         }
3705                                 }
3706                         }
3707                         mod->brushq1.data_lightstyleinfo = (model_brush_lightstyleinfo_t *)datapointer;datapointer += mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t);
3708                         memcpy(mod->brushq1.data_lightstyleinfo, styleinfo, mod->brushq1.num_lightstyles * sizeof(model_brush_lightstyleinfo_t));
3709                 }
3710                 else
3711                 {
3712                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3713                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3714                 }
3715                 //mod->brushq1.num_visleafs = bm->visleafs;
3716         }
3717
3718         Mod_Q1BSP_LoadMapBrushes();
3719
3720         //Mod_Q1BSP_ProcessLightList();
3721
3722         if (developer.integer >= 10)
3723                 Con_Printf("Some stats for q1bsp model \"%s\": %i faces, %i nodes, %i leafs, %i visleafs, %i visleafportals\n", loadmodel->name, loadmodel->num_surfaces, loadmodel->brush.num_nodes, loadmodel->brush.num_leafs, mod->brush.num_pvsclusters, loadmodel->brush.num_portals);
3724 }
3725
3726 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3727 {
3728 }
3729
3730 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3731 {
3732 /*
3733         d_t *in;
3734         m_t *out;
3735         int i, count;
3736
3737         in = (void *)(mod_base + l->fileofs);
3738         if (l->filelen % sizeof(*in))
3739                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3740         count = l->filelen / sizeof(*in);
3741         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3742
3743         loadmodel-> = out;
3744         loadmodel->num = count;
3745
3746         for (i = 0;i < count;i++, in++, out++)
3747         {
3748         }
3749 */
3750 }
3751
3752 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3753 {
3754 /*
3755         d_t *in;
3756         m_t *out;
3757         int i, count;
3758
3759         in = (void *)(mod_base + l->fileofs);
3760         if (l->filelen % sizeof(*in))
3761                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3762         count = l->filelen / sizeof(*in);
3763         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3764
3765         loadmodel-> = out;
3766         loadmodel->num = count;
3767
3768         for (i = 0;i < count;i++, in++, out++)
3769         {
3770         }
3771 */
3772 }
3773
3774 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3775 {
3776 /*
3777         d_t *in;
3778         m_t *out;
3779         int i, count;
3780
3781         in = (void *)(mod_base + l->fileofs);
3782         if (l->filelen % sizeof(*in))
3783                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3784         count = l->filelen / sizeof(*in);
3785         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3786
3787         loadmodel-> = out;
3788         loadmodel->num = count;
3789
3790         for (i = 0;i < count;i++, in++, out++)
3791         {
3792         }
3793 */
3794 }
3795
3796 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3797 {
3798 /*
3799         d_t *in;
3800         m_t *out;
3801         int i, count;
3802
3803         in = (void *)(mod_base + l->fileofs);
3804         if (l->filelen % sizeof(*in))
3805                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3806         count = l->filelen / sizeof(*in);
3807         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3808
3809         loadmodel-> = out;
3810         loadmodel->num = count;
3811
3812         for (i = 0;i < count;i++, in++, out++)
3813         {
3814         }
3815 */
3816 }
3817
3818 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3819 {
3820 /*
3821         d_t *in;
3822         m_t *out;
3823         int i, count;
3824
3825         in = (void *)(mod_base + l->fileofs);
3826         if (l->filelen % sizeof(*in))
3827                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3828         count = l->filelen / sizeof(*in);
3829         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3830
3831         loadmodel-> = out;
3832         loadmodel->num = count;
3833
3834         for (i = 0;i < count;i++, in++, out++)
3835         {
3836         }
3837 */
3838 }
3839
3840 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3841 {
3842 /*
3843         d_t *in;
3844         m_t *out;
3845         int i, count;
3846
3847         in = (void *)(mod_base + l->fileofs);
3848         if (l->filelen % sizeof(*in))
3849                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3850         count = l->filelen / sizeof(*in);
3851         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3852
3853         loadmodel-> = out;
3854         loadmodel->num = count;
3855
3856         for (i = 0;i < count;i++, in++, out++)
3857         {
3858         }
3859 */
3860 }
3861
3862 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3863 {
3864 /*
3865         d_t *in;
3866         m_t *out;
3867         int i, count;
3868
3869         in = (void *)(mod_base + l->fileofs);
3870         if (l->filelen % sizeof(*in))
3871                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3872         count = l->filelen / sizeof(*in);
3873         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3874
3875         loadmodel-> = out;
3876         loadmodel->num = count;
3877
3878         for (i = 0;i < count;i++, in++, out++)
3879         {
3880         }
3881 */
3882 }
3883
3884 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3885 {
3886 /*
3887         d_t *in;
3888         m_t *out;
3889         int i, count;
3890
3891         in = (void *)(mod_base + l->fileofs);
3892         if (l->filelen % sizeof(*in))
3893                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3894         count = l->filelen / sizeof(*in);
3895         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3896
3897         loadmodel-> = out;
3898         loadmodel->num = count;
3899
3900         for (i = 0;i < count;i++, in++, out++)
3901         {
3902         }
3903 */
3904 }
3905
3906 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3907 {
3908 /*
3909         d_t *in;
3910         m_t *out;
3911         int i, count;
3912
3913         in = (void *)(mod_base + l->fileofs);
3914         if (l->filelen % sizeof(*in))
3915                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3916         count = l->filelen / sizeof(*in);
3917         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3918
3919         loadmodel-> = out;
3920         loadmodel->num = count;
3921
3922         for (i = 0;i < count;i++, in++, out++)
3923         {
3924         }
3925 */
3926 }
3927
3928 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3929 {
3930 /*
3931         d_t *in;
3932         m_t *out;
3933         int i, count;
3934
3935         in = (void *)(mod_base + l->fileofs);
3936         if (l->filelen % sizeof(*in))
3937                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3938         count = l->filelen / sizeof(*in);
3939         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3940
3941         loadmodel-> = out;
3942         loadmodel->num = count;
3943
3944         for (i = 0;i < count;i++, in++, out++)
3945         {
3946         }
3947 */
3948 }
3949
3950 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3951 {
3952 /*
3953         d_t *in;
3954         m_t *out;
3955         int i, count;
3956
3957         in = (void *)(mod_base + l->fileofs);
3958         if (l->filelen % sizeof(*in))
3959                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3960         count = l->filelen / sizeof(*in);
3961         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3962
3963         loadmodel-> = out;
3964         loadmodel->num = count;
3965
3966         for (i = 0;i < count;i++, in++, out++)
3967         {
3968         }
3969 */
3970 }
3971
3972 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3973 {
3974 /*
3975         d_t *in;
3976         m_t *out;
3977         int i, count;
3978
3979         in = (void *)(mod_base + l->fileofs);
3980         if (l->filelen % sizeof(*in))
3981                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3982         count = l->filelen / sizeof(*in);
3983         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3984
3985         loadmodel-> = out;
3986         loadmodel->num = count;
3987
3988         for (i = 0;i < count;i++, in++, out++)
3989         {
3990         }
3991 */
3992 }
3993
3994 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3995 {
3996 /*
3997         d_t *in;
3998         m_t *out;
3999         int i, count;
4000
4001         in = (void *)(mod_base + l->fileofs);
4002         if (l->filelen % sizeof(*in))
4003                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4004         count = l->filelen / sizeof(*in);
4005         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4006
4007         loadmodel-> = out;
4008         loadmodel->num = count;
4009
4010         for (i = 0;i < count;i++, in++, out++)
4011         {
4012         }
4013 */
4014 }
4015
4016 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
4017 {
4018 /*
4019         d_t *in;
4020         m_t *out;
4021         int i, count;
4022
4023         in = (void *)(mod_base + l->fileofs);
4024         if (l->filelen % sizeof(*in))
4025                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4026         count = l->filelen / sizeof(*in);
4027         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4028
4029         loadmodel-> = out;
4030         loadmodel->num = count;
4031
4032         for (i = 0;i < count;i++, in++, out++)
4033         {
4034         }
4035 */
4036 }
4037
4038 static void Mod_Q2BSP_LoadAreas(lump_t *l)
4039 {
4040 /*
4041         d_t *in;
4042         m_t *out;
4043         int i, count;
4044
4045         in = (void *)(mod_base + l->fileofs);
4046         if (l->filelen % sizeof(*in))
4047                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
4048         count = l->filelen / sizeof(*in);
4049         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4050
4051         loadmodel-> = out;
4052         loadmodel->num = count;
4053
4054         for (i = 0;i < count;i++, in++, out++)
4055         {
4056         }
4057 */
4058 }
4059
4060 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
4061 {
4062 /*
4063         d_t *in;
4064         m_t *out;
4065         int i, count;
4066
4067         in = (void *)(mod_base + l->fileofs);
4068         if (l->filelen % sizeof(*in))
4069                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
4070         count = l->filelen / sizeof(*in);
4071         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4072
4073         loadmodel-> = out;
4074         loadmodel->num = count;
4075
4076         for (i = 0;i < count;i++, in++, out++)
4077         {
4078         }
4079 */
4080 }
4081
4082 static void Mod_Q2BSP_LoadModels(lump_t *l)
4083 {
4084 /*
4085         d_t *in;
4086         m_t *out;
4087         int i, count;
4088
4089         in = (void *)(mod_base + l->fileofs);
4090         if (l->filelen % sizeof(*in))
4091                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
4092         count = l->filelen / sizeof(*in);
4093         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4094
4095         loadmodel-> = out;
4096         loadmodel->num = count;
4097
4098         for (i = 0;i < count;i++, in++, out++)
4099         {
4100         }
4101 */
4102 }
4103
4104 void static Mod_Q2BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
4105 {
4106         int i;
4107         q2dheader_t *header;
4108
4109         Host_Error("Mod_Q2BSP_Load: not yet implemented");
4110
4111         mod->modeldatatypestring = "Q2BSP";
4112
4113         mod->type = mod_brushq2;
4114
4115         header = (q2dheader_t *)buffer;
4116
4117         i = LittleLong(header->version);
4118         if (i != Q2BSPVERSION)
4119                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4120
4121         mod_base = (unsigned char *)header;
4122
4123         // swap all the lumps
4124         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4125                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4126
4127         mod->brush.qw_md4sum = 0;
4128         mod->brush.qw_md4sum2 = 0;
4129         for (i = 0;i < Q2HEADER_LUMPS;i++)
4130         {
4131                 if (i == Q2LUMP_ENTITIES)
4132                         continue;
4133                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4134                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4135                         continue;
4136                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4137         }
4138
4139         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4140         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4141         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4142         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4143         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4144         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4145         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4146         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4147         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4148         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4149         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4150         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4151         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4152         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4153         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4154         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4155         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4156         // LordHavoc: must go last because this makes the submodels
4157         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4158 }
4159
4160 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents);
4161 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents);
4162
4163 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4164 {
4165         const char *data;
4166         char key[128], value[MAX_INPUTLINE];
4167         float v[3];
4168         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4169         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4170         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4171         if (!l->filelen)
4172                 return;
4173         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen + 1);
4174         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4175         loadmodel->brush.entities[l->filelen] = 0;
4176         data = loadmodel->brush.entities;
4177         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4178         // VorteX: q3map2 FS-R generates tangentspace deluxemaps for q3bsp and sets 'deluxeMaps' key
4179         loadmodel->brushq3.deluxemapping = false;
4180         if (data && COM_ParseToken_Simple(&data, false, false) && com_token[0] == '{')
4181         {
4182                 while (1)
4183                 {
4184                         if (!COM_ParseToken_Simple(&data, false, false))
4185                                 break; // error
4186                         if (com_token[0] == '}')
4187                                 break; // end of worldspawn
4188                         if (com_token[0] == '_')
4189                                 strlcpy(key, com_token + 1, sizeof(key));
4190                         else
4191                                 strlcpy(key, com_token, sizeof(key));
4192                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4193                                 key[strlen(key)-1] = 0;
4194                         if (!COM_ParseToken_Simple(&data, false, false))
4195                                 break; // error
4196                         strlcpy(value, com_token, sizeof(value));
4197                         if (!strcasecmp("gridsize", key)) // this one is case insensitive to 100% match q3map2
4198                         {
4199 #if _MSC_VER >= 1400
4200 #define sscanf sscanf_s
4201 #endif
4202 #if 0
4203                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4204                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4205 #else
4206                                 VectorSet(v, 64, 64, 128);
4207                                 if(sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) != 3)
4208                                         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]);
4209                                 if (v[0] != 0 && v[1] != 0 && v[2] != 0)
4210                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4211 #endif
4212                         }
4213                         else if (!strcmp("deluxeMaps", key))
4214                         {
4215                                 if (!strcmp(com_token, "1"))
4216                                 {
4217                                         loadmodel->brushq3.deluxemapping = true;
4218                                         loadmodel->brushq3.deluxemapping_modelspace = true;
4219                                 }
4220                                 else if (!strcmp(com_token, "2"))
4221                                 {
4222                                         loadmodel->brushq3.deluxemapping = true;
4223                                         loadmodel->brushq3.deluxemapping_modelspace = false;
4224                                 }
4225                         }
4226                 }
4227         }
4228 }
4229
4230 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4231 {
4232         q3dtexture_t *in;
4233         texture_t *out;
4234         int i, count;
4235
4236         in = (q3dtexture_t *)(mod_base + l->fileofs);
4237         if (l->filelen % sizeof(*in))
4238                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4239         count = l->filelen / sizeof(*in);
4240         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4241
4242         loadmodel->data_textures = out;
4243         loadmodel->num_textures = count;
4244         loadmodel->num_texturesperskin = loadmodel->num_textures;
4245
4246         for (i = 0;i < count;i++)
4247         {
4248                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4249                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4250                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4251         }
4252
4253         if (cls.state == ca_dedicated)
4254                 return;
4255
4256         for (i = 0;i < count;i++, in++, out++)
4257                 Mod_LoadTextureFromQ3Shader(out, out->name, true, true, TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
4258 }
4259
4260 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4261 {
4262         q3dplane_t *in;
4263         mplane_t *out;
4264         int i, count;
4265
4266         in = (q3dplane_t *)(mod_base + l->fileofs);
4267         if (l->filelen % sizeof(*in))
4268                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4269         count = l->filelen / sizeof(*in);
4270         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4271
4272         loadmodel->brush.data_planes = out;
4273         loadmodel->brush.num_planes = count;
4274
4275         for (i = 0;i < count;i++, in++, out++)
4276         {
4277                 out->normal[0] = LittleFloat(in->normal[0]);
4278                 out->normal[1] = LittleFloat(in->normal[1]);
4279                 out->normal[2] = LittleFloat(in->normal[2]);
4280                 out->dist = LittleFloat(in->dist);
4281                 PlaneClassify(out);
4282         }
4283 }
4284
4285 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4286 {
4287         q3dbrushside_t *in;
4288         q3mbrushside_t *out;
4289         int i, n, count;
4290
4291         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4292         if (l->filelen % sizeof(*in))
4293                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4294         count = l->filelen / sizeof(*in);
4295         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4296
4297         loadmodel->brush.data_brushsides = out;
4298         loadmodel->brush.num_brushsides = count;
4299
4300         for (i = 0;i < count;i++, in++, out++)
4301         {
4302                 n = LittleLong(in->planeindex);
4303                 if (n < 0 || n >= loadmodel->brush.num_planes)
4304                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4305                 out->plane = loadmodel->brush.data_planes + n;
4306                 n = LittleLong(in->textureindex);
4307                 if (n < 0 || n >= loadmodel->num_textures)
4308                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4309                 out->texture = loadmodel->data_textures + n;
4310         }
4311 }
4312
4313 static void Mod_Q3BSP_LoadBrushSides_IG(lump_t *l)
4314 {
4315         q3dbrushside_ig_t *in;
4316         q3mbrushside_t *out;
4317         int i, n, count;
4318
4319         in = (q3dbrushside_ig_t *)(mod_base + l->fileofs);
4320         if (l->filelen % sizeof(*in))
4321                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4322         count = l->filelen / sizeof(*in);
4323         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4324
4325         loadmodel->brush.data_brushsides = out;
4326         loadmodel->brush.num_brushsides = count;
4327
4328         for (i = 0;i < count;i++, in++, out++)
4329         {
4330                 n = LittleLong(in->planeindex);
4331                 if (n < 0 || n >= loadmodel->brush.num_planes)
4332                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4333                 out->plane = loadmodel->brush.data_planes + n;
4334                 n = LittleLong(in->textureindex);
4335                 if (n < 0 || n >= loadmodel->num_textures)
4336                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4337                 out->texture = loadmodel->data_textures + n;
4338         }
4339 }
4340
4341 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4342 {
4343         q3dbrush_t *in;
4344         q3mbrush_t *out;
4345         int i, j, n, c, count, maxplanes, q3surfaceflags;
4346         colplanef_t *planes;
4347
4348         in = (q3dbrush_t *)(mod_base + l->fileofs);
4349         if (l->filelen % sizeof(*in))
4350                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4351         count = l->filelen / sizeof(*in);
4352         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4353
4354         loadmodel->brush.data_brushes = out;
4355         loadmodel->brush.num_brushes = count;
4356
4357         maxplanes = 0;
4358         planes = NULL;
4359
4360         for (i = 0;i < count;i++, in++, out++)
4361         {
4362                 n = LittleLong(in->firstbrushside);
4363                 c = LittleLong(in->numbrushsides);
4364                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4365                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4366                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4367                 out->numbrushsides = c;
4368                 n = LittleLong(in->textureindex);
4369                 if (n < 0 || n >= loadmodel->num_textures)
4370                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4371                 out->texture = loadmodel->data_textures + n;
4372
4373                 // make a list of mplane_t structs to construct a colbrush from
4374                 if (maxplanes < out->numbrushsides)
4375                 {
4376                         maxplanes = out->numbrushsides;
4377                         if (planes)
4378                                 Mem_Free(planes);
4379                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4380                 }
4381                 q3surfaceflags = 0;
4382                 for (j = 0;j < out->numbrushsides;j++)
4383                 {
4384                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4385                         planes[j].dist = out->firstbrushside[j].plane->dist;
4386                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4387                         planes[j].texture = out->firstbrushside[j].texture;
4388                         q3surfaceflags |= planes[j].q3surfaceflags;
4389                 }
4390                 // make the colbrush from the planes
4391                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents, q3surfaceflags, out->texture, true);
4392
4393                 // this whole loop can take a while (e.g. on redstarrepublic4)
4394                 CL_KeepaliveMessage(false);
4395         }
4396         if (planes)
4397                 Mem_Free(planes);
4398 }
4399
4400 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4401 {
4402         q3deffect_t *in;
4403         q3deffect_t *out;
4404         int i, n, count;
4405
4406         in = (q3deffect_t *)(mod_base + l->fileofs);
4407         if (l->filelen % sizeof(*in))
4408                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4409         count = l->filelen / sizeof(*in);
4410         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4411
4412         loadmodel->brushq3.data_effects = out;
4413         loadmodel->brushq3.num_effects = count;
4414
4415         for (i = 0;i < count;i++, in++, out++)
4416         {
4417                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4418                 n = LittleLong(in->brushindex);
4419                 if (n >= loadmodel->brush.num_brushes)
4420                 {
4421                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4422                         n = -1;
4423                 }
4424                 out->brushindex = n;
4425                 out->unknown = LittleLong(in->unknown);
4426         }
4427 }
4428
4429 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4430 {
4431         q3dvertex_t *in;
4432         int i, count;
4433
4434         in = (q3dvertex_t *)(mod_base + l->fileofs);
4435         if (l->filelen % sizeof(*in))
4436                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4437         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4438         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4439         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4440         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4441         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4442         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4443
4444         for (i = 0;i < count;i++, in++)
4445         {
4446                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4447                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4448                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4449                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4450                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4451                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4452                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4453                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4454                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4455                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4456                 // svector/tvector are calculated later in face loading
4457                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4458                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4459                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4460                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4461         }
4462 }
4463
4464 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4465 {
4466         int *in;
4467         int *out;
4468         int i, count;
4469
4470         in = (int *)(mod_base + l->fileofs);
4471         if (l->filelen % sizeof(int[3]))
4472                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4473         count = l->filelen / sizeof(*in);
4474         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4475
4476         loadmodel->brushq3.num_triangles = count / 3;
4477         loadmodel->brushq3.data_element3i = out;
4478
4479         for (i = 0;i < count;i++, in++, out++)
4480         {
4481                 *out = LittleLong(*in);
4482                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4483                 {
4484                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4485                         if(!loadmodel->brushq3.num_vertices)
4486                                 Host_Error("Mod_Q1BSP_LoadTrianglles: %s has triangles but no vertexes, cannot fix\n", loadmodel->name);
4487                         *out = 0;
4488                 }
4489         }
4490 }
4491
4492 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4493 {
4494         q3dlightmap_t *input_pointer;
4495         int i, j, k, count, power, power2, mask, endlightmap, mergewidth, mergeheight;
4496         unsigned char *c;
4497
4498         unsigned char *convertedpixels;
4499         char mapname[MAX_QPATH];
4500         int size, bytesperpixel, rgbmap[3];
4501         qboolean external;
4502         unsigned char *inpixels[10000]; // max count q3map2 can output (it uses 4 digits)
4503
4504         // defaults for q3bsp
4505         size = 128;
4506         bytesperpixel = 3;
4507         rgbmap[0] = 2;
4508         rgbmap[1] = 1;
4509         rgbmap[2] = 0;
4510         external = false;
4511         loadmodel->brushq3.lightmapsize = 128;
4512
4513         if (cls.state == ca_dedicated)
4514                 return;
4515
4516         if(mod_q3bsp_nolightmaps.integer)
4517         {
4518                 return;
4519         }
4520         else if(l->filelen)
4521         {
4522                 // prefer internal LMs for compatibility (a BSP contains no info on whether external LMs exist)
4523                 if (developer_loading.integer)
4524                         Con_Printf("Using internal lightmaps\n");
4525                 input_pointer = (q3dlightmap_t *)(mod_base + l->fileofs);
4526                 if (l->filelen % sizeof(*input_pointer))
4527                         Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4528                 count = l->filelen / sizeof(*input_pointer);
4529                 for(i = 0; i < count; ++i)
4530                         inpixels[i] = input_pointer[i].rgb;
4531         }
4532         else
4533         {
4534                 // no internal lightmaps
4535                 // try external lightmaps
4536                 if (developer_loading.integer)
4537                         Con_Printf("Using external lightmaps\n");
4538                 FS_StripExtension(loadmodel->name, mapname, sizeof(mapname));
4539                 inpixels[0] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, 0), false, false);
4540                 if(!inpixels[0])
4541                         return;
4542
4543                 // using EXTERNAL lightmaps instead
4544                 if(image_width != (int) CeilPowerOf2(image_width) || image_width != image_height)
4545                 {
4546                         Mem_Free(inpixels[0]);
4547                         Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
4548                 }
4549
4550                 size = image_width;
4551                 bytesperpixel = 4;
4552                 rgbmap[0] = 0;
4553                 rgbmap[1] = 1;
4554                 rgbmap[2] = 2;
4555                 external = true;
4556
4557                 for(count = 1; ; ++count)
4558                 {
4559                         inpixels[count] = loadimagepixelsbgra(va("%s/lm_%04d", mapname, count), false, false);
4560                         if(!inpixels[count])
4561                                 break; // we got all of them
4562                         if(image_width != size || image_height != size)
4563                         {
4564                                 for(i = 0; i <= count; ++i)
4565                                         Mem_Free(inpixels[i]);
4566                                 Host_Error("Mod_Q3BSP_LoadLightmaps: invalid external lightmap size in %s",loadmodel->name);
4567                         }
4568                 }
4569         }
4570
4571         convertedpixels = (unsigned char *) Mem_Alloc(tempmempool, size*size*4);
4572         loadmodel->brushq3.lightmapsize = size;
4573         loadmodel->brushq3.num_originallightmaps = count;
4574
4575         // now check the surfaces to see if any of them index an odd numbered
4576         // lightmap, if so this is not a deluxemapped bsp file
4577         //
4578         // also check what lightmaps are actually used, because q3map2 sometimes
4579         // (always?) makes an unused one at the end, which
4580         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4581         // reason when only one lightmap is used, which can throw off the
4582         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4583         // to see if the second lightmap is blank, if so it is not deluxemapped.
4584         // VorteX: autodetect only if previous attempt to find "deluxeMaps" key
4585         // in Mod_Q3BSP_LoadEntities was failed
4586         if (!loadmodel->brushq3.deluxemapping)
4587         {
4588                 loadmodel->brushq3.deluxemapping = !(count & 1);
4589                 loadmodel->brushq3.deluxemapping_modelspace = true;
4590                 endlightmap = 0;
4591                 if (loadmodel->brushq3.deluxemapping)
4592                 {
4593                         int facecount = faceslump->filelen / sizeof(q3dface_t);
4594                         q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4595                         for (i = 0;i < facecount;i++)
4596                         {
4597                                 j = LittleLong(faces[i].lightmapindex);
4598                                 if (j >= 0)
4599                                 {
4600                                         endlightmap = max(endlightmap, j + 1);
4601                                         if ((j & 1) || j + 1 >= count)
4602                                         {
4603                                                 loadmodel->brushq3.deluxemapping = false;
4604                                                 break;
4605                                         }
4606                                 }
4607                         }
4608                 }
4609
4610                 // q3map2 sometimes (or always?) makes a second blank lightmap for no
4611                 // reason when only one lightmap is used, which can throw off the
4612                 // deluxemapping detection method, so check 2-lightmap bsp's specifically
4613                 // to see if the second lightmap is blank, if so it is not deluxemapped.
4614                 //
4615                 // further research has shown q3map2 sometimes creates a deluxemap and two
4616                 // blank lightmaps, which must be handled properly as well
4617                 if (endlightmap == 1 && count > 1)
4618                 {
4619                         c = inpixels[1];
4620                         for (i = 0;i < size*size;i++)
4621                         {
4622                                 if (c[bytesperpixel*i + rgbmap[0]])
4623                                         break;
4624                                 if (c[bytesperpixel*i + rgbmap[1]])
4625                                         break;
4626                                 if (c[bytesperpixel*i + rgbmap[2]])
4627                                         break;
4628                         }
4629                         if (i == size*size)
4630                         {
4631                                 // all pixels in the unused lightmap were black...
4632                                 loadmodel->brushq3.deluxemapping = false;
4633                         }
4634                 }
4635         }
4636
4637         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4638
4639         // figure out what the most reasonable merge power is within limits
4640
4641         loadmodel->brushq3.num_lightmapmergepower = 0;
4642
4643         for(i = 0; (128 << i) < size; ++i)
4644                 ;
4645         // i is now 0 for 128, 1 for 256, etc
4646
4647         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++)
4648                 loadmodel->brushq3.num_lightmapmergepower = power;
4649
4650         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4651
4652         loadmodel->brushq3.num_mergedlightmaps = ((count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4653         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4654         if (loadmodel->brushq3.deluxemapping)
4655                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4656
4657         // allocate a texture pool if we need it
4658         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4659                 loadmodel->texturepool = R_AllocTexturePool();
4660
4661         power = loadmodel->brushq3.num_lightmapmergepower;
4662         power2 = power * 2;
4663         mask = (1 << power) - 1;
4664         for (i = 0;i < count;i++)
4665         {
4666                 // figure out which merged lightmap texture this fits into
4667                 int lightmapindex = i >> (loadmodel->brushq3.deluxemapping + power2);
4668                 for (k = 0;k < size*size;k++)
4669                 {
4670                         convertedpixels[k*4+0] = inpixels[i][k*bytesperpixel+rgbmap[0]];
4671                         convertedpixels[k*4+1] = inpixels[i][k*bytesperpixel+rgbmap[1]];
4672                         convertedpixels[k*4+2] = inpixels[i][k*bytesperpixel+rgbmap[2]];
4673                         convertedpixels[k*4+3] = 255;
4674                 }
4675                 if (loadmodel->brushq3.num_lightmapmergepower > 0)
4676                 {
4677                         // if the lightmap has not been allocated yet, create it
4678                         if (!loadmodel->brushq3.data_lightmaps[lightmapindex])
4679                         {
4680                                 // create a lightmap only as large as necessary to hold the
4681                                 // remaining size*size blocks
4682                                 // if there are multiple merged lightmap textures then they will
4683                                 // all be full size except the last one which may be smaller
4684                                 // because it only needs to the remaining blocks, and it will often
4685                                 // be odd sizes like 2048x512 due to only being 25% full or so.
4686                                 j = (count >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) - (lightmapindex << power2);
4687                                 for (mergewidth = 1;mergewidth < j && mergewidth < (1 << power);mergewidth *= 2)
4688                                         ;
4689                                 for (mergeheight = 1;mergewidth*mergeheight < j && mergeheight < (1 << power);mergeheight *= 2)
4690                                         ;
4691                                 if (developer_loading.integer)
4692                                         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);
4693                                 loadmodel->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), mergewidth * size, mergeheight * size, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), NULL);
4694                                 if (loadmodel->brushq3.data_deluxemaps)
4695                                         loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), mergewidth * size, mergeheight * size, NULL, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), NULL);
4696                         }
4697                         mergewidth = R_TextureWidth(loadmodel->brushq3.data_lightmaps[lightmapindex]) / size;
4698                         mergeheight = R_TextureHeight(loadmodel->brushq3.data_lightmaps[lightmapindex]) / size;
4699                         j = (i >> (loadmodel->brushq3.deluxemapping ? 1 : 0)) & ((1 << power2) - 1);
4700                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4701                                 R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[lightmapindex], convertedpixels, (j % mergewidth) * size, (j / mergewidth) * size, size, size);
4702                         else
4703                                 R_UpdateTexture(loadmodel->brushq3.data_lightmaps [lightmapindex], convertedpixels, (j % mergewidth) * size, (j / mergewidth) * size, size, size);
4704                 }
4705                 else
4706                 {
4707                         // figure out which merged lightmap texture this fits into
4708                         if (loadmodel->brushq3.deluxemapping && (i & 1))
4709                                 loadmodel->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", lightmapindex), size, size, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bspdeluxemaps.integer ? TEXF_COMPRESS : 0), NULL);
4710                         else
4711                                 loadmodel->brushq3.data_lightmaps [lightmapindex] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", lightmapindex), size, size, convertedpixels, TEXTYPE_BGRA, TEXF_FORCELINEAR | TEXF_PRECACHE | (gl_texturecompression_q3bsplightmaps.integer ? TEXF_COMPRESS : 0), NULL);
4712                 }
4713         }
4714
4715         Mem_Free(convertedpixels);
4716         if(external)
4717         {
4718                 for(i = 0; i < count; ++i)
4719                         Mem_Free(inpixels[i]);
4720         }
4721 }
4722
4723 static void Mod_Q3BSP_BuildBBoxes(const int *element3i, int num_triangles, const float *vertex3f, float **collisionbbox6f, int *collisionstride, int stride)
4724 {
4725         int j, k, cnt, tri;
4726         float *mins, *maxs;
4727         const float *vert;
4728         *collisionstride = stride;
4729         if(stride > 0)
4730         {
4731                 cnt = (num_triangles + stride - 1) / stride;
4732                 *collisionbbox6f = (float *) Mem_Alloc(loadmodel->mempool, sizeof(float[6]) * cnt);
4733                 for(j = 0; j < cnt; ++j)
4734                 {
4735                         mins = &((*collisionbbox6f)[6 * j + 0]);
4736                         maxs = &((*collisionbbox6f)[6 * j + 3]);
4737                         for(k = 0; k < stride; ++k)
4738                         {
4739                                 tri = j * stride + k;
4740                                 if(tri >= num_triangles)
4741                                         break;
4742                                 vert = &(vertex3f[element3i[3 * tri + 0] * 3]);
4743                                 if(!k || vert[0] < mins[0]) mins[0] = vert[0];
4744                                 if(!k || vert[1] < mins[1]) mins[1] = vert[1];
4745                                 if(!k || vert[2] < mins[2]) mins[2] = vert[2];
4746                                 if(!k || vert[0] > maxs[0]) maxs[0] = vert[0];
4747                                 if(!k || vert[1] > maxs[1]) maxs[1] = vert[1];
4748                                 if(!k || vert[2] > maxs[2]) maxs[2] = vert[2];
4749                                 vert = &(vertex3f[element3i[3 * tri + 1] * 3]);
4750                                 if(vert[0] < mins[0]) mins[0] = vert[0];
4751                                 if(vert[1] < mins[1]) mins[1] = vert[1];
4752                                 if(vert[2] < mins[2]) mins[2] = vert[2];
4753                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
4754                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
4755                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
4756                                 vert = &(vertex3f[element3i[3 * tri + 2] * 3]);
4757                                 if(vert[0] < mins[0]) mins[0] = vert[0];
4758                                 if(vert[1] < mins[1]) mins[1] = vert[1];
4759                                 if(vert[2] < mins[2]) mins[2] = vert[2];
4760                                 if(vert[0] > maxs[0]) maxs[0] = vert[0];
4761                                 if(vert[1] > maxs[1]) maxs[1] = vert[1];
4762                                 if(vert[2] > maxs[2]) maxs[2] = vert[2];
4763                         }
4764                 }
4765         }
4766         else
4767                 *collisionbbox6f = NULL;
4768 }
4769
4770 typedef struct patchtess_s
4771 {
4772         patchinfo_t info;
4773
4774         // Auxiliary data used only by patch loading code in Mod_Q3BSP_LoadFaces
4775         int surface_id;
4776         float lodgroup[6];
4777         float *originalvertex3f;
4778 } patchtess_t;
4779
4780 #define PATCHTESS_SAME_LODGROUP(a,b) \
4781         ( \
4782                 (a).lodgroup[0] == (b).lodgroup[0] && \
4783                 (a).lodgroup[1] == (b).lodgroup[1] && \
4784                 (a).lodgroup[2] == (b).lodgroup[2] && \
4785                 (a).lodgroup[3] == (b).lodgroup[3] && \
4786                 (a).lodgroup[4] == (b).lodgroup[4] && \
4787                 (a).lodgroup[5] == (b).lodgroup[5] \
4788         )
4789
4790 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4791 {
4792         q3dface_t *in, *oldin;
4793         msurface_t *out, *oldout;
4794         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles, cxtess, cytess;
4795         float lightmaptcbase[2], lightmaptcscale[2];
4796         //int *originalelement3i;
4797         //int *originalneighbor3i;
4798         float *originalvertex3f;
4799         //float *originalsvector3f;
4800         //float *originaltvector3f;
4801         float *originalnormal3f;
4802         float *originalcolor4f;
4803         float *originaltexcoordtexture2f;
4804         float *originaltexcoordlightmap2f;
4805         float *v;
4806         patchtess_t *patchtess = NULL;
4807         int patchtesscount = 0;
4808         qboolean again;
4809
4810         in = (q3dface_t *)(mod_base + l->fileofs);
4811         if (l->filelen % sizeof(*in))
4812                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4813         count = l->filelen / sizeof(*in);
4814         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4815
4816         loadmodel->data_surfaces = out;
4817         loadmodel->num_surfaces = count;
4818
4819         if(count > 0)
4820                 patchtess = (patchtess_t*) Mem_Alloc(tempmempool, count * sizeof(*patchtess));
4821
4822         i = 0;
4823         oldi = i;
4824         oldin = in;
4825         oldout = out;
4826         meshvertices = 0;
4827         meshtriangles = 0;
4828         for (;i < count;i++, in++, out++)
4829         {
4830                 // check face type first
4831                 type = LittleLong(in->type);
4832                 if (type != Q3FACETYPE_FLAT
4833                  && type != Q3FACETYPE_PATCH
4834                  && type != Q3FACETYPE_MESH
4835                  && type != Q3FACETYPE_FLARE)
4836                 {
4837                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4838                         continue;
4839                 }
4840
4841                 n = LittleLong(in->textureindex);
4842                 if (n < 0 || n >= loadmodel->num_textures)
4843                 {
4844                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4845                         continue;
4846                 }
4847                 out->texture = loadmodel->data_textures + n;
4848                 n = LittleLong(in->effectindex);
4849                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4850                 {
4851                         if (developer.integer >= 100)
4852                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4853                         n = -1;
4854                 }
4855                 if (n == -1)
4856                         out->effect = NULL;
4857                 else
4858                         out->effect = loadmodel->brushq3.data_effects + n;
4859
4860                 if (cls.state != ca_dedicated)
4861                 {
4862                         out->lightmaptexture = NULL;
4863                         out->deluxemaptexture = r_texture_blanknormalmap;
4864                         n = LittleLong(in->lightmapindex);
4865                         if (n < 0)
4866                                 n = -1;
4867                         else if (n >= loadmodel->brushq3.num_originallightmaps)
4868                         {
4869                                 if(loadmodel->brushq3.num_originallightmaps != 0)
4870                                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
4871                                 n = -1;
4872                         }
4873                         else
4874                         {
4875                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4876                                 if (loadmodel->brushq3.deluxemapping)
4877                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
4878                         }
4879                 }
4880
4881                 firstvertex = LittleLong(in->firstvertex);
4882                 numvertices = LittleLong(in->numvertices);
4883                 firstelement = LittleLong(in->firstelement);
4884                 numtriangles = LittleLong(in->numelements) / 3;
4885                 if (numtriangles * 3 != LittleLong(in->numelements))
4886                 {
4887                         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));
4888                         continue;
4889                 }
4890                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4891                 {
4892                         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);
4893                         continue;
4894                 }
4895                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4896                 {
4897                         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);
4898                         continue;
4899                 }
4900                 switch(type)
4901                 {
4902                 case Q3FACETYPE_FLAT:
4903                 case Q3FACETYPE_MESH:
4904                         // no processing necessary
4905                         break;
4906                 case Q3FACETYPE_PATCH:
4907                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4908                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4909                         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))
4910                         {
4911                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4912                                 continue;
4913                         }
4914                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4915
4916                         // convert patch to Q3FACETYPE_MESH
4917                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4918                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4919                         // bound to user settings
4920                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4921                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4922                         // bound to sanity settings
4923                         xtess = bound(0, xtess, 1024);
4924                         ytess = bound(0, ytess, 1024);
4925
4926                         // lower quality collision patches! Same procedure as before, but different cvars
4927                         // convert patch to Q3FACETYPE_MESH
4928                         cxtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4929                         cytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4930                         // bound to user settings
4931                         cxtess = bound(r_subdivisions_collision_mintess.integer, cxtess, r_subdivisions_collision_maxtess.integer);
4932                         cytess = bound(r_subdivisions_collision_mintess.integer, cytess, r_subdivisions_collision_maxtess.integer);
4933                         // bound to sanity settings
4934                         cxtess = bound(0, cxtess, 1024);
4935                         cytess = bound(0, cytess, 1024);
4936
4937                         // store it for the LOD grouping step
4938                         patchtess[patchtesscount].info.xsize = patchsize[0];
4939                         patchtess[patchtesscount].info.ysize = patchsize[1];
4940                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].xtess = xtess;
4941                         patchtess[patchtesscount].info.lods[PATCH_LOD_VISUAL].ytess = ytess;
4942                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].xtess = cxtess;
4943                         patchtess[patchtesscount].info.lods[PATCH_LOD_COLLISION].ytess = cytess;
4944
4945                         patchtess[patchtesscount].surface_id = i;
4946                         patchtess[patchtesscount].lodgroup[0] = in->specific.patch.mins[0];
4947                         patchtess[patchtesscount].lodgroup[1] = in->specific.patch.mins[1];
4948                         patchtess[patchtesscount].lodgroup[2] = in->specific.patch.mins[2];
4949                         patchtess[patchtesscount].lodgroup[3] = in->specific.patch.maxs[0];
4950                         patchtess[patchtesscount].lodgroup[4] = in->specific.patch.maxs[1];
4951                         patchtess[patchtesscount].lodgroup[5] = in->specific.patch.maxs[2];
4952                         patchtess[patchtesscount].originalvertex3f = originalvertex3f;
4953                         ++patchtesscount;
4954                         break;
4955                 case Q3FACETYPE_FLARE:
4956                         if (developer.integer >= 100)
4957                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4958                         // don't render it
4959                         continue;
4960                 }
4961                 out->num_vertices = numvertices;
4962                 out->num_triangles = numtriangles;
4963                 meshvertices += out->num_vertices;
4964                 meshtriangles += out->num_triangles;
4965         }
4966
4967         // Fix patches tesselations so that they make no seams
4968         do
4969         {
4970                 again = false;
4971                 for(i = 0; i < patchtesscount; ++i)
4972                 {
4973                         for(j = i+1; j < patchtesscount; ++j)
4974                         {
4975                                 if (!PATCHTESS_SAME_LODGROUP(patchtess[i], patchtess[j]))
4976                                         continue;
4977
4978                                 if (Q3PatchAdjustTesselation(3, &patchtess[i].info, patchtess[i].originalvertex3f, &patchtess[j].info, patchtess[j].originalvertex3f) )
4979                                         again = true;
4980                         }
4981                 }
4982         }
4983         while (again);
4984
4985         // Calculate resulting number of triangles
4986         for(i = 0; i < patchtesscount; ++i)
4987         {
4988                 finalwidth = Q3PatchDimForTess(patchtess[i].info.xsize, patchtess[i].info.lods[PATCH_LOD_VISUAL].xtess);
4989                 finalheight = Q3PatchDimForTess(patchtess[i].info.ysize,patchtess[i].info.lods[PATCH_LOD_VISUAL].ytess);
4990                 numvertices = finalwidth * finalheight;
4991                 numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4992
4993                 oldout[patchtess[i].surface_id].num_vertices = numvertices;
4994                 oldout[patchtess[i].surface_id].num_triangles = numtriangles;
4995                 meshvertices += oldout[patchtess[i].surface_id].num_vertices;
4996                 meshtriangles += oldout[patchtess[i].surface_id].num_triangles;
4997         }
4998
4999         i = oldi;
5000         in = oldin;
5001         out = oldout;
5002         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5003         meshvertices = 0;
5004         meshtriangles = 0;
5005         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5006         {
5007                 if (out->num_vertices < 3 || out->num_triangles < 1)
5008                         continue;
5009
5010                 type = LittleLong(in->type);
5011                 firstvertex = LittleLong(in->firstvertex);
5012                 firstelement = LittleLong(in->firstelement);
5013                 out->num_firstvertex = meshvertices;
5014                 out->num_firsttriangle = meshtriangles;
5015                 switch(type)
5016                 {
5017                 case Q3FACETYPE_FLAT:
5018                 case Q3FACETYPE_MESH:
5019                         // no processing necessary, except for lightmap merging
5020                         for (j = 0;j < out->num_vertices;j++)
5021                         {
5022                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5023                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5024                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5025                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5026                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5027                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5028                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5029                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5030                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5031                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5032                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5033                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5034                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5035                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5036                         }
5037                         for (j = 0;j < out->num_triangles*3;j++)
5038                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5039                         break;
5040                 case Q3FACETYPE_PATCH:
5041                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5042                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5043                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5044                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5045                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5046                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5047                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5048
5049                         xtess = ytess = cxtess = cytess = -1;
5050                         for(j = 0; j < patchtesscount; ++j)
5051                                 if(patchtess[j].surface_id == i)
5052                                 {
5053                                         xtess = patchtess[j].info.lods[PATCH_LOD_VISUAL].xtess;
5054                                         ytess = patchtess[j].info.lods[PATCH_LOD_VISUAL].ytess;
5055                                         cxtess = patchtess[j].info.lods[PATCH_LOD_COLLISION].xtess;
5056                                         cytess = patchtess[j].info.lods[PATCH_LOD_COLLISION].ytess;
5057                                         break;
5058                                 }
5059                         if(xtess == -1)
5060                         {
5061                                 Con_Printf("ERROR: patch %d isn't preprocessed?!?\n", i);
5062                                 xtess = ytess = cxtess = cytess = 0;
5063                         }
5064
5065                         finalwidth = Q3PatchDimForTess(patchsize[0],xtess); //((patchsize[0] - 1) * xtess) + 1;
5066                         finalheight = Q3PatchDimForTess(patchsize[1],ytess); //((patchsize[1] - 1) * ytess) + 1;
5067                         finalvertices = finalwidth * finalheight;
5068                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5069                         type = Q3FACETYPE_MESH;
5070                         // generate geometry
5071                         // (note: normals are skipped because they get recalculated)
5072                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5073                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5074                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5075                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5076                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5077                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5078
5079                         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);
5080
5081                         if (developer.integer >= 100)
5082                         {
5083                                 if (out->num_triangles < finaltriangles)
5084                                         Con_Printf("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);
5085                                 else
5086                                         Con_Printf("Mod_Q3BSP_LoadFaces: %ix%i curve subdivided to %i vertices / %i triangles\n", patchsize[0], patchsize[1], out->num_vertices, out->num_triangles);
5087                         }
5088                         // q3map does not put in collision brushes for curves... ugh
5089                         // build the lower quality collision geometry
5090                         finalwidth = Q3PatchDimForTess(patchsize[0],cxtess); //((patchsize[0] - 1) * cxtess) + 1;
5091                         finalheight = Q3PatchDimForTess(patchsize[1],cytess); //((patchsize[1] - 1) * cytess) + 1;
5092                         finalvertices = finalwidth * finalheight;
5093                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5094
5095                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5096                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5097                         out->num_collisionvertices = finalvertices;
5098                         out->num_collisiontriangles = finaltriangles;
5099                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, cxtess, cytess);
5100                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
5101
5102                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5103                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
5104
5105                         oldnumtriangles = out->num_triangles;
5106                         oldnumtriangles2 = out->num_collisiontriangles;
5107                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
5108
5109                         // now optimize the collision mesh by finding triangle bboxes...
5110                         Mod_Q3BSP_BuildBBoxes(out->data_collisionelement3i, out->num_collisiontriangles, out->data_collisionvertex3f, &out->data_collisionbbox6f, &out->num_collisionbboxstride, mod_q3bsp_curves_collisions_stride.integer);
5111                         Mod_Q3BSP_BuildBBoxes(loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle, out->num_triangles, loadmodel->surfmesh.data_vertex3f, &out->data_bbox6f, &out->num_bboxstride, mod_q3bsp_curves_stride.integer);
5112
5113                         if (developer.integer >= 100)
5114                                 Con_Printf("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);
5115                         break;
5116                 default:
5117                         break;
5118                 }
5119                 meshvertices += out->num_vertices;
5120                 meshtriangles += out->num_triangles;
5121                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5122                         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)
5123                                 invalidelements++;
5124                 if (invalidelements)
5125                 {
5126                         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);
5127                         for (j = 0;j < out->num_triangles * 3;j++)
5128                         {
5129                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5130                                 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)
5131                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5132                         }
5133                         Con_Print("\n");
5134                 }
5135                 // calculate a bounding box
5136                 VectorClear(out->mins);
5137                 VectorClear(out->maxs);
5138                 if (out->num_vertices)
5139                 {
5140                         if (cls.state != ca_dedicated && out->lightmaptexture)
5141                         {
5142                                 // figure out which part of the merged lightmap this fits into
5143                                 int lightmapindex = LittleLong(in->lightmapindex) >> (loadmodel->brushq3.deluxemapping ? 1 : 0);
5144                                 int mergewidth = R_TextureWidth(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5145                                 int mergeheight = R_TextureHeight(out->lightmaptexture) / loadmodel->brushq3.lightmapsize;
5146                                 lightmapindex &= mergewidth * mergeheight - 1;
5147                                 lightmaptcscale[0] = 1.0f / mergewidth;
5148                                 lightmaptcscale[1] = 1.0f / mergeheight;
5149                                 lightmaptcbase[0] = (lightmapindex % mergewidth) * lightmaptcscale[0];
5150                                 lightmaptcbase[1] = (lightmapindex / mergewidth) * lightmaptcscale[1];
5151                                 // modify the lightmap texcoords to match this region of the merged lightmap
5152                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5153                                 {
5154                                         v[0] = v[0] * lightmaptcscale[0] + lightmaptcbase[0];
5155                                         v[1] = v[1] * lightmaptcscale[1] + lightmaptcbase[1];
5156                                 }
5157                         }
5158                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5159                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5160                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5161                         {
5162                                 out->mins[0] = min(out->mins[0], v[0]);
5163                                 out->maxs[0] = max(out->maxs[0], v[0]);
5164                                 out->mins[1] = min(out->mins[1], v[1]);
5165                                 out->maxs[1] = max(out->maxs[1], v[1]);
5166                                 out->mins[2] = min(out->mins[2], v[2]);
5167                                 out->maxs[2] = max(out->maxs[2], v[2]);
5168                         }
5169                         out->mins[0] -= 1.0f;
5170                         out->mins[1] -= 1.0f;
5171                         out->mins[2] -= 1.0f;
5172                         out->maxs[0] += 1.0f;
5173                         out->maxs[1] += 1.0f;
5174                         out->maxs[2] += 1.0f;
5175                 }
5176                 // set lightmap styles for consistency with q1bsp
5177                 //out->lightmapinfo->styles[0] = 0;
5178                 //out->lightmapinfo->styles[1] = 255;
5179                 //out->lightmapinfo->styles[2] = 255;
5180                 //out->lightmapinfo->styles[3] = 255;
5181         }
5182
5183         i = oldi;
5184         out = oldout;
5185         for (;i < count;i++, out++)
5186         {
5187                 if(out->num_vertices && out->num_triangles)
5188                         continue;
5189                 if(out->num_vertices == 0)
5190                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d has no vertices, ignoring\n", i);
5191                 if(out->num_triangles == 0)
5192                         Con_Printf("Mod_Q3BSP_LoadFaces: surface %d has no triangles, ignoring\n", i);
5193         }
5194
5195         // for per pixel lighting
5196         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);
5197
5198         // generate ushort elements array if possible
5199         if (loadmodel->surfmesh.data_element3s)
5200                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
5201                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
5202
5203         // free the no longer needed vertex data
5204         loadmodel->brushq3.num_vertices = 0;
5205         if (loadmodel->brushq3.data_vertex3f)
5206                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5207         loadmodel->brushq3.data_vertex3f = NULL;
5208         loadmodel->brushq3.data_normal3f = NULL;
5209         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5210         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5211         loadmodel->brushq3.data_color4f = NULL;
5212         // free the no longer needed triangle data
5213         loadmodel->brushq3.num_triangles = 0;
5214         if (loadmodel->brushq3.data_element3i)
5215                 Mem_Free(loadmodel->brushq3.data_element3i);
5216         loadmodel->brushq3.data_element3i = NULL;
5217
5218         if(patchtess)
5219                 Mem_Free(patchtess);
5220 }
5221
5222 static void Mod_Q3BSP_LoadModels(lump_t *l)
5223 {
5224         q3dmodel_t *in;
5225         q3dmodel_t *out;
5226         int i, j, n, c, count;
5227
5228         in = (q3dmodel_t *)(mod_base + l->fileofs);
5229         if (l->filelen % sizeof(*in))
5230                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5231         count = l->filelen / sizeof(*in);
5232         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5233
5234         loadmodel->brushq3.data_models = out;
5235         loadmodel->brushq3.num_models = count;
5236
5237         for (i = 0;i < count;i++, in++, out++)
5238         {
5239                 for (j = 0;j < 3;j++)
5240                 {
5241                         out->mins[j] = LittleFloat(in->mins[j]);
5242                         out->maxs[j] = LittleFloat(in->maxs[j]);
5243                 }
5244                 n = LittleLong(in->firstface);
5245                 c = LittleLong(in->numfaces);
5246                 if (n < 0 || n + c > loadmodel->num_surfaces)
5247                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5248                 out->firstface = n;
5249                 out->numfaces = c;
5250                 n = LittleLong(in->firstbrush);
5251                 c = LittleLong(in->numbrushes);
5252                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5253                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5254                 out->firstbrush = n;
5255                 out->numbrushes = c;
5256         }
5257 }
5258
5259 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5260 {
5261         int *in;
5262         int *out;
5263         int i, n, count;
5264
5265         in = (int *)(mod_base + l->fileofs);
5266         if (l->filelen % sizeof(*in))
5267                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5268         count = l->filelen / sizeof(*in);
5269         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5270
5271         loadmodel->brush.data_leafbrushes = out;
5272         loadmodel->brush.num_leafbrushes = count;
5273
5274         for (i = 0;i < count;i++, in++, out++)
5275         {
5276                 n = LittleLong(*in);
5277                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5278                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5279                 *out = n;
5280         }
5281 }
5282
5283 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5284 {
5285         int *in;
5286         int *out;
5287         int i, n, count;
5288
5289         in = (int *)(mod_base + l->fileofs);
5290         if (l->filelen % sizeof(*in))
5291                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5292         count = l->filelen / sizeof(*in);
5293         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5294
5295         loadmodel->brush.data_leafsurfaces = out;
5296         loadmodel->brush.num_leafsurfaces = count;
5297
5298         for (i = 0;i < count;i++, in++, out++)
5299         {
5300                 n = LittleLong(*in);
5301                 if (n < 0 || n >= loadmodel->num_surfaces)
5302                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5303                 *out = n;
5304         }
5305 }
5306
5307 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5308 {
5309         q3dleaf_t *in;
5310         mleaf_t *out;
5311         int i, j, n, c, count;
5312
5313         in = (q3dleaf_t *)(mod_base + l->fileofs);
5314         if (l->filelen % sizeof(*in))
5315                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5316         count = l->filelen / sizeof(*in);
5317         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5318
5319         loadmodel->brush.data_leafs = out;
5320         loadmodel->brush.num_leafs = count;
5321
5322         for (i = 0;i < count;i++, in++, out++)
5323         {
5324                 out->parent = NULL;
5325                 out->plane = NULL;
5326                 out->clusterindex = LittleLong(in->clusterindex);
5327                 out->areaindex = LittleLong(in->areaindex);
5328                 for (j = 0;j < 3;j++)
5329                 {
5330                         // yes the mins/maxs are ints
5331                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5332                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5333                 }
5334                 n = LittleLong(in->firstleafface);
5335                 c = LittleLong(in->numleaffaces);
5336                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5337                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5338                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5339                 out->numleafsurfaces = c;
5340                 n = LittleLong(in->firstleafbrush);
5341                 c = LittleLong(in->numleafbrushes);
5342                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5343                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5344                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5345                 out->numleafbrushes = c;
5346         }
5347 }
5348
5349 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5350 {
5351         q3dnode_t *in;
5352         mnode_t *out;
5353         int i, j, n, count;
5354
5355         in = (q3dnode_t *)(mod_base + l->fileofs);
5356         if (l->filelen % sizeof(*in))
5357                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5358         count = l->filelen / sizeof(*in);
5359         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5360
5361         loadmodel->brush.data_nodes = out;
5362         loadmodel->brush.num_nodes = count;
5363
5364         for (i = 0;i < count;i++, in++, out++)
5365         {
5366                 out->parent = NULL;
5367                 n = LittleLong(in->planeindex);
5368                 if (n < 0 || n >= loadmodel->brush.num_planes)
5369                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5370                 out->plane = loadmodel->brush.data_planes + n;
5371                 for (j = 0;j < 2;j++)
5372                 {
5373                         n = LittleLong(in->childrenindex[j]);
5374                         if (n >= 0)
5375                         {
5376                                 if (n >= loadmodel->brush.num_nodes)
5377                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5378                                 out->children[j] = loadmodel->brush.data_nodes + n;
5379                         }
5380                         else
5381                         {
5382                                 n = -1 - n;
5383                                 if (n >= loadmodel->brush.num_leafs)
5384                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5385                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5386                         }
5387                 }
5388                 for (j = 0;j < 3;j++)
5389                 {
5390                         // yes the mins/maxs are ints
5391                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5392                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5393                 }
5394         }
5395
5396         // set the parent pointers
5397         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5398 }
5399
5400 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5401 {
5402         q3dlightgrid_t *in;
5403         q3dlightgrid_t *out;
5404         int count;
5405
5406         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5407         if (l->filelen % sizeof(*in))
5408                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5409         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5410         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5411         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5412         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5413         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5414         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5415         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5416         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5417         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5418         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5419         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5420         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5421         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5422         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]);
5423         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]);
5424
5425         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5426         if (l->filelen)
5427         {
5428                 if (l->filelen < count * (int)sizeof(*in))
5429                 {
5430                         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]);
5431                         return; // ignore the grid if we cannot understand it
5432                 }
5433                 if (l->filelen != count * (int)sizeof(*in))
5434                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5435                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5436                 loadmodel->brushq3.data_lightgrid = out;
5437                 loadmodel->brushq3.num_lightgrid = count;
5438                 // no swapping or validation necessary
5439                 memcpy(out, in, count * (int)sizeof(*out));
5440         }
5441 }
5442
5443 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5444 {
5445         q3dpvs_t *in;
5446         int totalchains;
5447
5448         if (l->filelen == 0)
5449         {
5450                 int i;
5451                 // unvised maps often have cluster indices even without pvs, so check
5452                 // leafs to find real number of clusters
5453                 loadmodel->brush.num_pvsclusters = 1;
5454                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5455                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5456
5457                 // create clusters
5458                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5459                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5460                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5461                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5462                 return;
5463         }
5464
5465         in = (q3dpvs_t *)(mod_base + l->fileofs);
5466         if (l->filelen < 9)
5467                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5468
5469         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5470         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5471         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5472                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5473         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5474         if (l->filelen < totalchains + (int)sizeof(*in))
5475                 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);
5476
5477         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5478         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5479 }
5480
5481 static void Mod_Q3BSP_LightPoint(dp_model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5482 {
5483         int i, j, k, index[3];
5484         float transformed[3], blend1, blend2, blend, stylescale;
5485         q3dlightgrid_t *a, *s;
5486
5487         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5488         stylescale = r_refdef.scene.rtlightstylevalue[0];
5489
5490         if (!model->brushq3.num_lightgrid)
5491         {
5492                 ambientcolor[0] = stylescale;
5493                 ambientcolor[1] = stylescale;
5494                 ambientcolor[2] = stylescale;
5495                 return;
5496         }
5497
5498         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5499         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5500         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5501         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5502         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5503         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5504         index[0] = (int)floor(transformed[0]);
5505         index[1] = (int)floor(transformed[1]);
5506         index[2] = (int)floor(transformed[2]);
5507         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5508
5509         // now lerp the values
5510         VectorClear(diffusenormal);
5511         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5512         for (k = 0;k < 2;k++)
5513         {
5514                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5515                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5516                         continue;
5517                 for (j = 0;j < 2;j++)
5518                 {
5519                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5520                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5521                                 continue;
5522                         for (i = 0;i < 2;i++)
5523                         {
5524                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5525                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5526                                         continue;
5527                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5528                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5529                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5530                                 // this uses the mod_md3_sin table because the values are
5531                                 // already in the 0-255 range, the 64+ bias fetches a cosine
5532                                 // instead of a sine value
5533                                 diffusenormal[0] += blend * (mod_md3_sin[64 + s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5534                                 diffusenormal[1] += blend * (mod_md3_sin[     s->diffuseyaw] * mod_md3_sin[s->diffusepitch]);
5535                                 diffusenormal[2] += blend * (mod_md3_sin[64 + s->diffusepitch]);
5536                                 //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)));
5537                         }
5538                 }
5539         }
5540
5541         // normalize the light direction before turning
5542         VectorNormalize(diffusenormal);
5543         //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]);
5544 }
5545
5546 static int Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
5547 {
5548         double t1, t2;
5549         double midf, mid[3];
5550         int ret, side;
5551
5552         // check for empty
5553         while (node->plane)
5554         {
5555                 // find the point distances
5556                 mplane_t *plane = node->plane;
5557                 if (plane->type < 3)
5558                 {
5559                         t1 = p1[plane->type] - plane->dist;
5560                         t2 = p2[plane->type] - plane->dist;
5561                 }
5562                 else
5563                 {
5564                         t1 = DotProduct (plane->normal, p1) - plane->dist;
5565                         t2 = DotProduct (plane->normal, p2) - plane->dist;
5566                 }
5567
5568                 if (t1 < 0)
5569                 {
5570                         if (t2 < 0)
5571                         {
5572                                 node = node->children[1];
5573                                 continue;
5574                         }
5575                         side = 1;
5576                 }
5577                 else
5578                 {
5579                         if (t2 >= 0)
5580                         {
5581                                 node = node->children[0];
5582                                 continue;
5583                         }
5584                         side = 0;
5585                 }
5586
5587                 midf = t1 / (t1 - t2);
5588                 VectorLerp(p1, midf, p2, mid);
5589
5590                 // recurse both sides, front side first
5591                 // return 2 if empty is followed by solid (hit something)
5592                 // do not return 2 if both are solid or both empty,
5593                 // or if start is solid and end is empty
5594                 // as these degenerate cases usually indicate the eye is in solid and
5595                 // should see the target point anyway
5596                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
5597                 if (ret != 0)
5598                         return ret;
5599                 ret = Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
5600                 if (ret != 1)
5601                         return ret;
5602                 return 2;
5603         }
5604         return ((mleaf_t *)node)->clusterindex < 0;
5605 }
5606
5607 static qboolean Mod_Q3BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
5608 {
5609         if (model->brush.submodel || mod_q3bsp_tracelineofsight_brushes.integer)
5610         {
5611                 trace_t trace;
5612                 model->TraceLine(model, NULL, NULL, &trace, start, end, SUPERCONTENTS_VISBLOCKERMASK);
5613                 return trace.fraction == 1;
5614         }
5615         else
5616         {
5617                 double tracestart[3], traceend[3];
5618                 VectorCopy(start, tracestart);
5619                 VectorCopy(end, traceend);
5620                 return !Mod_Q3BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend);
5621         }
5622 }
5623
5624 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, dp_model_t *model, mnode_t *node, const vec3_t point, int markframe)
5625 {
5626         int i;
5627         mleaf_t *leaf;
5628         colbrushf_t *brush;
5629         // find which leaf the point is in
5630         while (node->plane)
5631                 node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
5632         // point trace the brushes
5633         leaf = (mleaf_t *)node;
5634         for (i = 0;i < leaf->numleafbrushes;i++)
5635         {
5636                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5637                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5638                 {
5639                         brush->markframe = markframe;
5640                         Collision_TracePointBrushFloat(trace, point, brush);
5641                 }
5642         }
5643         // can't do point traces on curves (they have no thickness)
5644 }
5645
5646 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)
5647 {
5648         int i, startside, endside;
5649         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5650         mleaf_t *leaf;
5651         msurface_t *surface;
5652         mplane_t *plane;
5653         colbrushf_t *brush;
5654         // walk the tree until we hit a leaf, recursing for any split cases
5655         while (node->plane)
5656         {
5657                 // abort if this part of the bsp tree can not be hit by this trace
5658 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5659 //                      return;
5660                 plane = node->plane;
5661                 // axial planes are much more common than non-axial, so an optimized
5662                 // axial case pays off here
5663                 if (plane->type < 3)
5664                 {
5665                         dist1 = start[plane->type] - plane->dist;
5666                         dist2 = end[plane->type] - plane->dist;
5667                 }
5668                 else
5669                 {
5670                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5671                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5672                 }
5673                 startside = dist1 < 0;
5674                 endside = dist2 < 0;
5675                 if (startside == endside)
5676                 {
5677                         // most of the time the line fragment is on one side of the plane
5678                         node = node->children[startside];
5679                 }
5680                 else
5681                 {
5682                         // line crosses node plane, split the line
5683                         dist1 = PlaneDiff(linestart, plane);
5684                         dist2 = PlaneDiff(lineend, plane);
5685                         midfrac = dist1 / (dist1 - dist2);
5686                         VectorLerp(linestart, midfrac, lineend, mid);
5687                         // take the near side first
5688                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5689                         // if we found an impact on the front side, don't waste time
5690                         // exploring the far side
5691                         if (midfrac <= trace->realfraction)
5692                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5693                         return;
5694                 }
5695         }
5696         // abort if this part of the bsp tree can not be hit by this trace
5697 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5698 //              return;
5699         // hit a leaf
5700         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5701         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5702         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5703         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5704         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5705         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5706         // line trace the brushes
5707         leaf = (mleaf_t *)node;
5708         for (i = 0;i < leaf->numleafbrushes;i++)
5709         {
5710                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5711                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5712                 {
5713                         brush->markframe = markframe;
5714                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5715                 }
5716         }
5717         // can't do point traces on curves (they have no thickness)
5718         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5719         {
5720                 // line trace the curves
5721                 for (i = 0;i < leaf->numleafsurfaces;i++)
5722                 {
5723                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5724                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5725                         {
5726                                 surface->collisionmarkframe = markframe;
5727                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5728                         }
5729                 }
5730         }
5731 }
5732
5733 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)
5734 {
5735         int i;
5736         int sides;
5737         mleaf_t *leaf;
5738         colbrushf_t *brush;
5739         msurface_t *surface;
5740         mplane_t *plane;
5741         float nodesegmentmins[3], nodesegmentmaxs[3];
5742         // walk the tree until we hit a leaf, recursing for any split cases
5743         while (node->plane)
5744         {
5745                 // abort if this part of the bsp tree can not be hit by this trace
5746 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5747 //                      return;
5748                 plane = node->plane;
5749                 // axial planes are much more common than non-axial, so an optimized
5750                 // axial case pays off here
5751                 if (plane->type < 3)
5752                 {
5753                         // this is an axial plane, compare bounding box directly to it and
5754                         // recurse sides accordingly
5755                         // recurse down node sides
5756                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5757                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5758                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5759                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5760                 }
5761                 else
5762                 {
5763                         // this is a non-axial plane, so check if the start and end boxes
5764                         // are both on one side of the plane to handle 'diagonal' cases
5765                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5766                 }
5767                 if (sides == 3)
5768                 {
5769                         // segment crosses plane
5770                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5771                         sides = 2;
5772                 }
5773                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5774                 // in this case we simply pretend the trace hit nothing
5775                 if (sides == 0)
5776                         return; // ERROR: NAN bounding box!
5777                 // take whichever side the segment box is on
5778                 node = node->children[sides - 1];
5779         }
5780         // abort if this part of the bsp tree can not be hit by this trace
5781 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5782 //              return;
5783         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5784         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5785         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5786         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5787         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5788         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5789         // hit a leaf
5790         leaf = (mleaf_t *)node;
5791         for (i = 0;i < leaf->numleafbrushes;i++)
5792         {
5793                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5794                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5795                 {
5796                         brush->markframe = markframe;
5797                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5798                 }
5799         }
5800         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5801         {
5802                 for (i = 0;i < leaf->numleafsurfaces;i++)
5803                 {
5804                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5805                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5806                         {
5807                                 surface->collisionmarkframe = markframe;
5808                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5809                         }
5810                 }
5811         }
5812 }
5813
5814 static int markframe = 0;
5815
5816 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)
5817 {
5818         int i;
5819         q3mbrush_t *brush;
5820         memset(trace, 0, sizeof(*trace));
5821         trace->fraction = 1;
5822         trace->realfraction = 1;
5823         trace->hitsupercontentsmask = hitsupercontentsmask;
5824         if (model->brush.submodel)
5825         {
5826                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5827                         if (brush->colbrushf)
5828                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5829         }
5830         else
5831                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5832 }
5833
5834 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)
5835 {
5836         int i;
5837         float segmentmins[3], segmentmaxs[3];
5838         msurface_t *surface;
5839         q3mbrush_t *brush;
5840
5841         if (VectorCompare(start, end))
5842         {
5843                 Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, start, hitsupercontentsmask);
5844                 return;
5845         }
5846
5847         memset(trace, 0, sizeof(*trace));
5848         trace->fraction = 1;
5849         trace->realfraction = 1;
5850         trace->hitsupercontentsmask = hitsupercontentsmask;
5851         segmentmins[0] = min(start[0], end[0]) - 1;
5852         segmentmins[1] = min(start[1], end[1]) - 1;
5853         segmentmins[2] = min(start[2], end[2]) - 1;
5854         segmentmaxs[0] = max(start[0], end[0]) + 1;
5855         segmentmaxs[1] = max(start[1], end[1]) + 1;
5856         segmentmaxs[2] = max(start[2], end[2]) + 1;
5857         if (model->brush.submodel)
5858         {
5859                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5860                         if (brush->colbrushf)
5861                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5862                 if (mod_q3bsp_curves_collisions.integer)
5863                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5864                                 if (surface->num_collisiontriangles)
5865                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5866         }
5867         else
5868                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5869 }
5870
5871 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)
5872 {
5873         int i;
5874         float segmentmins[3], segmentmaxs[3];
5875         msurface_t *surface;
5876         q3mbrush_t *brush;
5877         colboxbrushf_t thisbrush_start, thisbrush_end;
5878         vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5879
5880         if (mod_q3bsp_optimizedtraceline.integer && VectorCompare(boxmins, boxmaxs))
5881         {
5882                 vec3_t shiftstart, shiftend;
5883                 VectorAdd(start, boxmins, shiftstart);
5884                 VectorAdd(end, boxmins, shiftend);
5885                 if (VectorCompare(start, end))
5886                         Mod_Q3BSP_TracePoint(model, frameblend, skeleton, trace, shiftstart, hitsupercontentsmask);
5887                 else
5888                 {
5889                         Mod_Q3BSP_TraceLine(model, frameblend, skeleton, trace, shiftstart, shiftend, hitsupercontentsmask);
5890                         VectorSubtract(trace->endpos, boxmins, trace->endpos);
5891                 }
5892                 return;
5893         }
5894
5895         // box trace, performed as brush trace
5896         memset(trace, 0, sizeof(*trace));
5897         trace->fraction = 1;
5898         trace->realfraction = 1;
5899         trace->hitsupercontentsmask = hitsupercontentsmask;
5900         segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5901         segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5902         segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5903         segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5904         segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5905         segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5906         VectorAdd(start, boxmins, boxstartmins);
5907         VectorAdd(start, boxmaxs, boxstartmaxs);
5908         VectorAdd(end, boxmins, boxendmins);
5909         VectorAdd(end, boxmaxs, boxendmaxs);
5910         Collision_BrushForBox(&thisbrush_start, boxstartmins, boxstartmaxs, 0, 0, NULL);
5911         Collision_BrushForBox(&thisbrush_end, boxendmins, boxendmaxs, 0, 0, NULL);
5912         if (model->brush.submodel)
5913         {
5914                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5915                         if (brush->colbrushf)
5916                                 Collision_TraceBrushBrushFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, brush->colbrushf, brush->colbrushf);
5917                 if (mod_q3bsp_curves_collisions.integer)
5918                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5919                                 if (surface->num_collisiontriangles)
5920                                         Collision_TraceBrushTriangleMeshFloat(trace, &thisbrush_start.brush, &thisbrush_end.brush, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->num_collisionbboxstride, surface->data_collisionbbox6f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5921         }
5922         else
5923                 Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, &thisbrush_start.brush, &thisbrush_end.brush, ++markframe, segmentmins, segmentmaxs);
5924 }
5925
5926 static int Mod_Q3BSP_PointSuperContents(struct model_s *model, int frame, const vec3_t point)
5927 {
5928         int i;
5929         int supercontents = 0;
5930         q3mbrush_t *brush;
5931         // test if the point is inside each brush
5932         if (model->brush.submodel)
5933         {
5934                 // submodels are effectively one leaf
5935                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5936                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
5937                                 supercontents |= brush->colbrushf->supercontents;
5938         }
5939         else
5940         {
5941                 mnode_t *node = model->brush.data_nodes;
5942                 mleaf_t *leaf;
5943                 // find which leaf the point is in
5944                 while (node->plane)
5945                         node = node->children[(node->plane->type < 3 ? point[node->plane->type] : DotProduct(point, node->plane->normal)) < node->plane->dist];
5946                 leaf = (mleaf_t *)node;
5947                 // now check the brushes in the leaf
5948                 for (i = 0;i < leaf->numleafbrushes;i++)
5949                 {
5950                         brush = model->brush.data_brushes + leaf->firstleafbrush[i];
5951                         if (brush->colbrushf && Collision_PointInsideBrushFloat(point, brush->colbrushf))
5952                                 supercontents |= brush->colbrushf->supercontents;
5953                 }
5954         }
5955         return supercontents;
5956 }
5957
5958 static int Mod_Q3BSP_SuperContentsFromNativeContents(dp_model_t *model, int nativecontents)
5959 {
5960         int supercontents = 0;
5961         if (nativecontents & CONTENTSQ3_SOLID)
5962                 supercontents |= SUPERCONTENTS_SOLID;
5963         if (nativecontents & CONTENTSQ3_WATER)
5964                 supercontents |= SUPERCONTENTS_WATER;
5965         if (nativecontents & CONTENTSQ3_SLIME)
5966                 supercontents |= SUPERCONTENTS_SLIME;
5967         if (nativecontents & CONTENTSQ3_LAVA)
5968                 supercontents |= SUPERCONTENTS_LAVA;
5969         if (nativecontents & CONTENTSQ3_BODY)
5970                 supercontents |= SUPERCONTENTS_BODY;
5971         if (nativecontents & CONTENTSQ3_CORPSE)
5972                 supercontents |= SUPERCONTENTS_CORPSE;
5973         if (nativecontents & CONTENTSQ3_NODROP)
5974                 supercontents |= SUPERCONTENTS_NODROP;
5975         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5976                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5977         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5978                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5979         if (nativecontents & CONTENTSQ3_DONOTENTER)
5980                 supercontents |= SUPERCONTENTS_DONOTENTER;
5981         if (nativecontents & CONTENTSQ3_BOTCLIP)
5982                 supercontents |= SUPERCONTENTS_BOTCLIP;
5983         if (!(nativecontents & CONTENTSQ3_TRANSLUCENT))
5984                 supercontents |= SUPERCONTENTS_OPAQUE;
5985         return supercontents;
5986 }
5987
5988 static int Mod_Q3BSP_NativeContentsFromSuperContents(dp_model_t *model, int supercontents)
5989 {
5990         int nativecontents = 0;
5991         if (supercontents & SUPERCONTENTS_SOLID)
5992                 nativecontents |= CONTENTSQ3_SOLID;
5993         if (supercontents & SUPERCONTENTS_WATER)
5994                 nativecontents |= CONTENTSQ3_WATER;
5995         if (supercontents & SUPERCONTENTS_SLIME)
5996                 nativecontents |= CONTENTSQ3_SLIME;
5997         if (supercontents & SUPERCONTENTS_LAVA)
5998                 nativecontents |= CONTENTSQ3_LAVA;
5999         if (supercontents & SUPERCONTENTS_BODY)
6000                 nativecontents |= CONTENTSQ3_BODY;
6001         if (supercontents & SUPERCONTENTS_CORPSE)
6002                 nativecontents |= CONTENTSQ3_CORPSE;
6003         if (supercontents & SUPERCONTENTS_NODROP)
6004                 nativecontents |= CONTENTSQ3_NODROP;
6005         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
6006                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
6007         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
6008                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
6009         if (supercontents & SUPERCONTENTS_DONOTENTER)
6010                 nativecontents |= CONTENTSQ3_DONOTENTER;
6011         if (supercontents & SUPERCONTENTS_BOTCLIP)
6012                 nativecontents |= CONTENTSQ3_BOTCLIP;
6013         if (!(supercontents & SUPERCONTENTS_OPAQUE))
6014                 nativecontents |= CONTENTSQ3_TRANSLUCENT;
6015         return nativecontents;
6016 }
6017
6018 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
6019 {
6020         int numleafs;
6021         while (node->plane)
6022         {
6023                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
6024                 node = node->children[1];
6025         }
6026         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
6027         if (loadmodel->brush.num_leafs < numleafs)
6028                 loadmodel->brush.num_leafs = numleafs;
6029 }
6030
6031 void Mod_Q3BSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6032 {
6033         int i, j, numshadowmeshtriangles, lumps;
6034         q3dheader_t *header;
6035         float corner[3], yawradius, modelradius;
6036         msurface_t *surface;
6037
6038         mod->modeldatatypestring = "Q3BSP";
6039
6040         mod->type = mod_brushq3;
6041         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
6042         mod->numskins = 1;
6043
6044         header = (q3dheader_t *)buffer;
6045         if((char *) bufferend < (char *) buffer + sizeof(q3dheader_t))
6046                 Host_Error("Mod_Q3BSP_Load: %s is smaller than its header", mod->name);
6047
6048         i = LittleLong(header->version);
6049         if (i != Q3BSPVERSION && i != Q3BSPVERSION_IG && i != Q3BSPVERSION_LIVE)
6050                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
6051
6052         mod->soundfromcenter = true;
6053         mod->TraceBox = Mod_Q3BSP_TraceBox;
6054         mod->TraceLine = Mod_Q3BSP_TraceLine;
6055         mod->TracePoint = Mod_Q3BSP_TracePoint;
6056         mod->PointSuperContents = Mod_Q3BSP_PointSuperContents;
6057         mod->brush.TraceLineOfSight = Mod_Q3BSP_TraceLineOfSight;
6058         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
6059         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
6060         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
6061         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
6062         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
6063         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
6064         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
6065         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
6066         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
6067         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6068         mod->brush.AmbientSoundLevelsForPoint = NULL;
6069         mod->brush.RoundUpToHullSize = NULL;
6070         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
6071         mod->Draw = R_Q1BSP_Draw;
6072         mod->DrawDepth = R_Q1BSP_DrawDepth;
6073         mod->DrawDebug = R_Q1BSP_DrawDebug;
6074         mod->DrawPrepass = R_Q1BSP_DrawPrepass;
6075         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
6076         mod->CompileShadowMap = R_Q1BSP_CompileShadowMap;
6077         mod->DrawShadowMap = R_Q1BSP_DrawShadowMap;
6078         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
6079         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
6080         mod->DrawLight = R_Q1BSP_DrawLight;
6081
6082         mod_base = (unsigned char *)header;
6083
6084         // swap all the lumps
6085         header->ident = LittleLong(header->ident);
6086         header->version = LittleLong(header->version);
6087         lumps = (header->version == Q3BSPVERSION_LIVE) ? Q3HEADER_LUMPS_LIVE : Q3HEADER_LUMPS;
6088         for (i = 0;i < lumps;i++)
6089         {
6090                 j = (header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs));
6091                 if((char *) bufferend < (char *) buffer + j)
6092                         Host_Error("Mod_Q3BSP_Load: %s has a lump that starts outside the file!", mod->name);
6093                 j += (header->lumps[i].filelen = LittleLong(header->lumps[i].filelen));
6094                 if((char *) bufferend < (char *) buffer + j)
6095                         Host_Error("Mod_Q3BSP_Load: %s has a lump that ends outside the file!", mod->name);
6096         }
6097         /*
6098          * NO, do NOT clear them!
6099          * they contain actual data referenced by other stuff.
6100          * Instead, before using the advertisements lump, check header->versio
6101          * again!
6102          * Sorry, but otherwise it breaks memory of the first lump.
6103         for (i = lumps;i < Q3HEADER_LUMPS_MAX;i++)
6104         {
6105                 header->lumps[i].fileofs = 0;
6106                 header->lumps[i].filelen = 0;
6107         }
6108         */
6109
6110         mod->brush.qw_md4sum = 0;
6111         mod->brush.qw_md4sum2 = 0;
6112         for (i = 0;i < lumps;i++)
6113         {
6114                 if (i == Q3LUMP_ENTITIES)
6115                         continue;
6116                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6117                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
6118                         continue;
6119                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6120
6121                 // all this checksumming can take a while, so let's send keepalives here too
6122                 CL_KeepaliveMessage(false);
6123         }
6124
6125         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
6126         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
6127         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
6128         if (header->version == Q3BSPVERSION_IG)
6129                 Mod_Q3BSP_LoadBrushSides_IG(&header->lumps[Q3LUMP_BRUSHSIDES]);
6130         else
6131                 Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
6132         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
6133         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
6134         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
6135         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
6136         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
6137         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
6138         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
6139         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
6140         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
6141         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6142         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6143         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6144         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6145         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6146
6147         // the MakePortals code works fine on the q3bsp data as well
6148         Mod_Q1BSP_MakePortals();
6149
6150         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6151         loadmodel->brush.supportwateralpha = true;
6152
6153         // make a single combined shadow mesh to allow optimized shadow volume creation
6154         numshadowmeshtriangles = 0;
6155         if (cls.state != ca_dedicated)
6156         {
6157                 for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6158                 {
6159                         surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6160                         numshadowmeshtriangles += surface->num_triangles;
6161                 }
6162                 loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6163                 for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6164                         if (surface->num_triangles > 0)
6165                                 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));
6166                 loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6167                 Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6168         }
6169
6170         loadmodel->brush.num_leafs = 0;
6171         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6172
6173         if (loadmodel->brush.numsubmodels)
6174                 loadmodel->brush.submodels = (dp_model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(dp_model_t *));
6175
6176         mod = loadmodel;
6177         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6178         {
6179                 if (i > 0)
6180                 {
6181                         char name[10];
6182                         // duplicate the basic information
6183                         dpsnprintf(name, sizeof(name), "*%i", i);
6184                         mod = Mod_FindName(name, loadmodel->name);
6185                         // copy the base model to this one
6186                         *mod = *loadmodel;
6187                         // rename the clone back to its proper name
6188                         strlcpy(mod->name, name, sizeof(mod->name));
6189                         mod->brush.parentmodel = loadmodel;
6190                         // textures and memory belong to the main model
6191                         mod->texturepool = NULL;
6192                         mod->mempool = NULL;
6193                         mod->brush.GetPVS = NULL;
6194                         mod->brush.FatPVS = NULL;
6195                         mod->brush.BoxTouchingPVS = NULL;
6196                         mod->brush.BoxTouchingLeafPVS = NULL;
6197                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6198                         mod->brush.FindBoxClusters = NULL;
6199                         mod->brush.LightPoint = NULL;
6200                         mod->brush.AmbientSoundLevelsForPoint = NULL;
6201                 }
6202                 mod->brush.submodel = i;
6203                 if (loadmodel->brush.submodels)
6204                         loadmodel->brush.submodels[i] = mod;
6205
6206                 // make the model surface list (used by shadowing/lighting)
6207                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6208                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6209                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6210                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6211                 mod->sortedmodelsurfaces = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
6212                 Mod_MakeSortedSurfaces(mod);
6213
6214                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6215                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6216                 // enlarge the bounding box to enclose all geometry of this model,
6217                 // because q3map2 sometimes lies (mostly to affect the lightgrid),
6218                 // which can in turn mess up the farclip (as well as culling when
6219                 // outside the level - an unimportant concern)
6220
6221                 //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]);
6222                 for (j = 0;j < mod->nummodelsurfaces;j++)
6223                 {
6224                         const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
6225                         const float *v = mod->surfmesh.data_vertex3f + 3 * surface->num_firstvertex;
6226                         int k;
6227                         if (!surface->num_vertices)
6228                                 continue;
6229                         for (k = 0;k < surface->num_vertices;k++, v += 3)
6230                         {
6231                                 mod->normalmins[0] = min(mod->normalmins[0], v[0]);
6232                                 mod->normalmins[1] = min(mod->normalmins[1], v[1]);
6233                                 mod->normalmins[2] = min(mod->normalmins[2], v[2]);
6234                                 mod->normalmaxs[0] = max(mod->normalmaxs[0], v[0]);
6235                                 mod->normalmaxs[1] = max(mod->normalmaxs[1], v[1]);
6236                                 mod->normalmaxs[2] = max(mod->normalmaxs[2], v[2]);
6237                         }
6238                 }
6239                 //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]);
6240                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
6241                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
6242                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
6243                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
6244                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
6245                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
6246                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
6247                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
6248                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
6249                 mod->yawmins[2] = mod->normalmins[2];
6250                 mod->yawmaxs[2] = mod->normalmaxs[2];
6251                 mod->radius = modelradius;
6252                 mod->radius2 = modelradius * modelradius;
6253
6254                 // this gets altered below if sky or water is used
6255                 mod->DrawSky = NULL;
6256                 mod->DrawAddWaterPlanes = NULL;
6257
6258                 for (j = 0;j < mod->nummodelsurfaces;j++)
6259                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & MATERIALFLAG_SKY)
6260                                 break;
6261                 if (j < mod->nummodelsurfaces)
6262                         mod->DrawSky = R_Q1BSP_DrawSky;
6263
6264                 for (j = 0;j < mod->nummodelsurfaces;j++)
6265                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->basematerialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION))
6266                                 break;
6267                 if (j < mod->nummodelsurfaces)
6268                         mod->DrawAddWaterPlanes = R_Q1BSP_DrawAddWaterPlanes;
6269         }
6270 }
6271
6272 void Mod_IBSP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6273 {
6274         int i = LittleLong(((int *)buffer)[1]);
6275         if (i == Q3BSPVERSION || i == Q3BSPVERSION_IG || i == Q3BSPVERSION_LIVE)
6276                 Mod_Q3BSP_Load(mod,buffer, bufferend);
6277         else if (i == Q2BSPVERSION)
6278                 Mod_Q2BSP_Load(mod,buffer, bufferend);
6279         else
6280                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
6281 }
6282
6283 void Mod_MAP_Load(dp_model_t *mod, void *buffer, void *bufferend)
6284 {
6285         Host_Error("Mod_MAP_Load: not yet implemented");
6286 }
6287
6288 #ifdef OBJWORKS
6289 typedef struct objvertex_s
6290 {
6291         float v[3];
6292         float vt[2];
6293         float vn[3];
6294 }
6295 objvertex_t;
6296
6297 typedef struct objtriangle_s
6298 {
6299         objvertex_t vertex[3];
6300         int textureindex;
6301         // these fields are used only in conversion to surfaces
6302         int axis;
6303         int surfaceindex;
6304         int surfacevertexindex[3];
6305         float edgeplane[3][4];
6306 }
6307 objtriangle_t;
6308
6309 typedef objnode_s
6310 {
6311         struct objnode_s *children[2];
6312         struct objnode_s *parent;
6313         objtriangle_t *triangles;
6314         float normal[3];
6315         float dist;
6316         float mins[3];
6317         float maxs[3];
6318         int numtriangles;
6319 }
6320 objnode_t;
6321
6322 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)
6323 {
6324         int i, j;
6325         float normal[3];
6326         float dist;
6327         int score;
6328         float bestnormal[3];
6329         float bestdist;
6330         int bestscore;
6331         float mins[3];
6332         float maxs[3];
6333         int numfronttriangles;
6334         int numbacktriangles;
6335         int count_front;
6336         int count_back;
6337         int count_both;
6338         int count_on;
6339         float outfrontpoints[5][3];
6340         float outbackpoints[5][3];
6341         int neededfrontpoints;
6342         int neededbackpoints;
6343         int countonpoints;
6344         objnode_t *node;
6345
6346         node = (objnode_t *)Mem_ExpandableArray_AllocRecord(array);
6347         node->parent = parent;
6348         if (numtriangles)
6349         {
6350                 VectorCopy(triangles[0].vertex[0].v, mins);
6351                 VectorCopy(triangles[0].vertex[0].v, maxs);
6352         }
6353         else if (parent && parent->children[0] == node)
6354         {
6355                 VectorCopy(parent->mins, mins);
6356                 Vectorcopy(parent->maxs, maxs);
6357         }
6358         else if (parent && parent->children[1] == node)
6359         {
6360                 VectorCopy(parent->mins, mins);
6361                 Vectorcopy(parent->maxs, maxs);
6362         }
6363         else
6364         {
6365                 VectorClear(mins);
6366                 VectorClear(maxs);
6367         }
6368         for (i = 0;i < numtriangles;i++)
6369         {
6370                 for (j = 0;j < 3;j++)
6371                 {
6372                         mins[0] = min(mins[0], triangles[i].vertex[j].v[0]);
6373                         mins[1] = min(mins[1], triangles[i].vertex[j].v[1]);
6374                         mins[2] = min(mins[2], triangles[i].vertex[j].v[2]);
6375                         maxs[0] = max(maxs[0], triangles[i].vertex[j].v[0]);
6376                         maxs[1] = max(maxs[1], triangles[i].vertex[j].v[1]);
6377                         maxs[2] = max(maxs[2], triangles[i].vertex[j].v[2]);
6378                 }
6379         }
6380         VectorCopy(mins, node->mins);
6381         VectorCopy(maxs, node->maxs);
6382         if (numtriangles <= mod_obj_leaftriangles.integer)
6383         {
6384                 // create a leaf
6385                 loadmodel->brush.num_leafs++;
6386                 node->triangles = triangles;
6387                 node->numtriangles = numtriangles;
6388                 return node;
6389         }
6390
6391         // create a node
6392         loadmodel->brush.num_nodes++;
6393         // pick a splitting plane from the various choices available to us...
6394         // early splits simply halve the interval
6395         bestscore = 0;
6396         VectorClear(bestnormal);
6397         bestdist = 0;
6398         if (numtriangles <= mod_obj_splitterlimit.integer)
6399                 limit = numtriangles;
6400         else
6401                 limit = 0;
6402         for (i = -3;i < limit;i++)
6403         {
6404                 if (i < 0)
6405                 {
6406                         // first we try 3 axial splits (kdtree-like)
6407                         j = i + 3;
6408                         VectorClear(normal);
6409                         normal[j] = 1;
6410                         dist = (mins[j] + maxs[j]) * 0.5f;
6411                 }
6412                 else
6413                 {
6414                         // then we try each triangle plane
6415                         TriangleNormal(triangles[i].vertex[0].v, triangles[i].vertex[1].v, triangles[i].vertex[2].v, normal);
6416                         VectorNormalize(normal);
6417                         dist = DotProduct(normal, triangles[i].vertex[0].v);
6418                         // use positive axial values whenever possible
6419                         if (normal[0] == -1)
6420                                 normal[0] = 1;
6421                         if (normal[1] == -1)
6422                                 normal[1] = 1;
6423                         if (normal[2] == -1)
6424                                 normal[2] = 1;
6425                         // skip planes that match the current best
6426                         if (VectorCompare(normal, bestnormal) && dist == bestdist)
6427                                 continue;
6428                 }
6429                 count_on = 0;
6430                 count_front = 0;
6431                 count_back = 0;
6432                 count_both = 0;
6433                 for (j = 0;j < numtriangles;j++)
6434                 {
6435                         dists[0] = DotProduct(normal, triangles[j].vertex[0].v) - dist;
6436                         dists[1] = DotProduct(normal, triangles[j].vertex[1].v) - dist;
6437                         dists[2] = DotProduct(normal, triangles[j].vertex[2].v) - dist;
6438                         if (dists[0] < -DIST_EPSILON || dists[1] < -DIST_EPSILON || dists[2] < -DIST_EPSILON)
6439                         {
6440                                 if (dists[0] > DIST_EPSILON || dists[1] > DIST_EPSILON || dists[2] > DIST_EPSILON)
6441                                         count_both++;
6442                                 else
6443                                         count_back++;
6444                         }
6445                         else if (dists[0] > DIST_EPSILON || dists[1] > DIST_EPSILON || dists[2] > DIST_EPSILON)
6446                                 count_front++;
6447                         else
6448                                 count_on++;
6449                 }
6450                 // score is supposed to:
6451                 // prefer axial splits
6452                 // prefer evenly dividing the input triangles
6453                 // prefer triangles on the plane
6454                 // avoid triangles crossing the plane
6455                 score = count_on*count_on - count_both*count_both + min(count_front, count_back)*(count_front+count_back);
6456                 if (normal[0] == 1 || normal[1] == 1 || normal[2] == 1)
6457                         score *= 2;
6458                 if (i == -3 || bestscore < score)
6459                 {
6460                         VectorCopy(normal, bestnormal);
6461                         bestdist = dist;
6462                         bestscore = score;
6463                 }
6464         }
6465
6466         // now we have chosen an optimal split plane...
6467
6468         // divide triangles by the splitting plane
6469         numfronttriangles = 0;
6470         numbacktriangles = 0;
6471         for (i = 0;i < numtriangles;i++)
6472         {
6473                 neededfrontpoints = 0;
6474                 neededbackpoints = 0;
6475                 countonpoints = 0;
6476                 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);
6477                 if (countonpoints > 1)
6478                 {
6479                         // triangle lies on plane, assign it to one child only
6480                         TriangleNormal(triangles[i].vertex[0].v, triangles[i].vertex[1].v, triangles[i].vertex[2].v, normal);
6481                         if (DotProduct(bestnormal, normal) >= 0)
6482                         {
6483                                 // assign to front side child
6484                                 obj_fronttriangles[numfronttriangles++] = triangles[i];
6485                         }
6486                         else
6487                         {
6488                                 // assign to back side child
6489                                 obj_backtriangles[numbacktriangles++] = triangles[i];
6490                         }
6491                 }
6492                 else
6493                 {
6494                         // convert clipped polygons to triangles
6495                         for (j = 0;j < neededfrontpoints-2;j++)
6496                         {
6497                                 obj_fronttriangles[numfronttriangles] = triangles[i];
6498                                 VectorCopy(outfrontpoints[0], obj_fronttriangles[numfronttriangles].vertex[0].v);
6499                                 VectorCopy(outfrontpoints[j+1], obj_fronttriangles[numfronttriangles].vertex[1].v);
6500                                 VectorCopy(outfrontpoints[j+2], obj_fronttriangles[numfronttriangles].vertex[2].v);
6501                                 numfronttriangles++;
6502                         }
6503                         for (j = 0;j < neededbackpoints-2;j++)
6504                         {
6505                                 obj_backtriangles[numbacktriangles] = triangles[i];
6506                                 VectorCopy(outbackpoints[0], obj_backtriangles[numbacktriangles].vertex[0].v);
6507                                 VectorCopy(outbackpoints[j+1], obj_backtriangles[numbacktriangles].vertex[1].v);
6508                                 VectorCopy(outbackpoints[j+2], obj_backtriangles[numbacktriangles].vertex[2].v);
6509                                 numbacktriangles++;
6510                         }
6511                 }
6512         }
6513
6514         // now copy the triangles out of the big buffer
6515         if (numfronttriangles)
6516         {
6517                 fronttriangles = Mem_Alloc(loadmodel->mempool, fronttriangles * sizeof(*fronttriangles));
6518                 memcpy(fronttriangles, obj_fronttriangles, numfronttriangles * sizeof(*fronttriangles));
6519         }
6520         else
6521                 fronttriangles = NULL;
6522         if (numbacktriangles)
6523         {
6524                 backtriangles = Mem_Alloc(loadmodel->mempool, backtriangles * sizeof(*backtriangles));
6525                 memcpy(backtriangles, obj_backtriangles, numbacktriangles * sizeof(*backtriangles));
6526         }
6527         else
6528                 backtriangles = NULL;
6529
6530         // free the original triangles we were given
6531         if (triangles)
6532                 Mem_Free(triangles);
6533         triangles = NULL;
6534         numtriangles = 0;
6535
6536         // now create the children...
6537         node->children[0] = Mod_OBJ_BSPNodeForTriangles(node, fronttriangles, numfronttriangles, frontmins, frontmaxs, nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
6538         node->children[1] = Mod_OBJ_BSPNodeForTriangles(node, backtriangles, numbacktriangles, backmins, backmaxs, nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
6539         return node;
6540 }
6541
6542 void Mod_OBJ_SnapVertex(float *v)
6543 {
6544         int i;
6545         float a = mod_obj_vertexprecision.value;
6546         float b = 1.0f / a;
6547         v[0] -= floor(v[0] * a + 0.5f) * b;
6548         v[1] -= floor(v[1] * a + 0.5f) * b;
6549         v[2] -= floor(v[2] * a + 0.5f) * b;
6550 }
6551
6552 void Mod_OBJ_ConvertBSPNode(objnode_t *objnode, mnode_t *mnodeparent)
6553 {
6554         if (objnode->children[0])
6555         {
6556                 // convert to mnode_t
6557                 mnode_t *mnode = loadmodel->brush.data_nodes + loadmodel->brush.num_nodes++;
6558                 mnode->parent = mnodeparent;
6559                 mnode->plane = loadmodel->brush.data_planes + loadmodel->brush.num_planes++;
6560                 VectorCopy(objnode->normal, mnode->plane->normal);
6561                 mnode->plane->dist = objnode->dist;
6562                 PlaneClassify(mnode->plane);
6563                 VectorCopy(objnode->mins, mnode->mins);
6564                 VectorCopy(objnode->maxs, mnode->maxs);
6565                 // push combinedsupercontents up to the parent
6566                 if (mnodeparent)
6567                         mnodeparent->combinedsupercontents |= mnode->combinedsupercontents;
6568                 mnode->children[0] = Mod_OBJ_ConvertBSPNode(objnode->children[0], mnode);
6569                 mnode->children[1] = Mod_OBJ_ConvertBSPNode(objnode->children[1], mnode);
6570         }
6571         else
6572         {
6573                 // convert to mleaf_t
6574                 mleaf_t *mleaf = loadmodel->brush.data_leafs + loadmodel->brush.num_leafs++;
6575                 mleaf->parent = mnodeparent;
6576                 VectorCopy(objnode->mins, mleaf->mins);
6577                 VectorCopy(objnode->maxs, mleaf->maxs);
6578                 mleaf->clusterindex = loadmodel->brush.num_leafs - 1;
6579                 if (objnode->numtriangles)
6580                 {
6581                         objtriangle_t *triangles = objnode->triangles;
6582                         int numtriangles = objnode->numtriangles;
6583                         texture_t *texture;
6584                         float edge[3][3];
6585                         float normal[3];
6586                         objvertex_t vertex[3];
6587                         numsurfaces = 0;
6588                         maxsurfaces = numtriangles;
6589                         surfaces = NULL;
6590                         // calculate some more data on each triangle for surface gathering
6591                         for (i = 0;i < numtriangles;i++)
6592                         {
6593                                 triangle = triangles + i;
6594                                 texture = loadmodel->data_textures + triangle->textureindex;
6595                                 Mod_OBJ_SnapVertex(triangle->vertex[0].v);
6596                                 Mod_OBJ_SnapVertex(triangle->vertex[1].v);
6597                                 Mod_OBJ_SnapVertex(triangle->vertex[2].v);
6598                                 TriangleNormal(triangle->vertex[0].v, triangle->vertex[1].v, triangle->vertex[2].v, normal);
6599                                 axis = 0;
6600                                 if (fabs(normal[axis]) < fabs(normal[1]))
6601                                         axis = 1;
6602                                 if (fabs(normal[axis]) < fabs(normal[2]))
6603                                         axis = 2;
6604                                 VectorClear(normal);
6605                                 normal[axis] = 1;
6606                                 triangle->axis = axis;
6607                                 VectorSubtract(triangle->vertex[1].v, triangle->vertex[0].v, edge[0]);
6608                                 VectorSubtract(triangle->vertex[2].v, triangle->vertex[1].v, edge[1]);
6609                                 VectorSubtract(triangle->vertex[0].v, triangle->vertex[2].v, edge[2]);
6610                                 CrossProduct(edge[0], normal, triangle->edgeplane[0]);
6611                                 CrossProduct(edge[1], normal, triangle->edgeplane[1]);
6612                                 CrossProduct(edge[2], normal, triangle->edgeplane[2]);
6613                                 VectorNormalize(triangle->edgeplane[0]);
6614                                 VectorNormalize(triangle->edgeplane[1]);
6615                                 VectorNormalize(triangle->edgeplane[2]);
6616                                 triangle->edgeplane[0][3] = DotProduct(triangle->edgeplane[0], triangle->vertex[0].v);
6617                                 triangle->edgeplane[1][3] = DotProduct(triangle->edgeplane[1], triangle->vertex[1].v);
6618                                 triangle->edgeplane[2][3] = DotProduct(triangle->edgeplane[2], triangle->vertex[2].v);
6619                                 triangle->surfaceindex = 0;
6620                                 // add to the combined supercontents while we're here...
6621                                 mleaf->combinedsupercontents |= texture->supercontents;
6622                         }
6623                         surfaceindex = 1;
6624                         for (i = 0;i < numtriangles;i++)
6625                         {
6626                                 // skip already-assigned triangles
6627                                 if (triangles[i].surfaceindex)
6628                                         continue;
6629                                 texture = loadmodel->data_textures + triangles[i].textureindex;
6630                                 // assign a new surface to this triangle
6631                                 triangles[i].surfaceindex = surfaceindex++;
6632                                 axis = triangles[i].axis;
6633                                 numvertices = 3;
6634                                 // find the triangle's neighbors, this can take multiple passes
6635                                 retry = true;
6636                                 while (retry)
6637                                 {
6638                                         retry = false;
6639                                         for (j = i+1;j < numtriangles;j++)
6640                                         {
6641                                                 if (triangles[j].surfaceindex || triangles[j].axis != axis || triangles[j].texture != texture)
6642                                                         continue;
6643                                                 triangle = triangles + j;
6644                                                 for (k = i;k < j;k++)
6645                                                 {
6646                                                         if (triangles[k].surfaceindex != surfaceindex)
6647                                                                 continue;
6648                                                         if (VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[0].v)
6649                                                          || VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[1].v)
6650                                                          || VectorCompare(triangles[k].vertex[0].v, triangles[j].vertex[2].v)
6651                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[0].v)
6652                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[1].v)
6653                                                          || VectorCompare(triangles[k].vertex[1].v, triangles[j].vertex[2].v)
6654                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[0].v)
6655                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[1].v)
6656                                                          || VectorCompare(triangles[k].vertex[2].v, triangles[j].vertex[2].v))
6657                                                         {
6658                                                                 // shares a vertex position
6659                                                                 --- FIXME ---
6660                                                         }
6661                                                 }
6662                                                 for (k = 0;k < numvertices;k++)
6663                                                         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))
6664                                                                 break;
6665                                                 if (k == numvertices)
6666                                                         break; // not a neighbor
6667                                                 // this triangle is a neighbor and has the same axis and texture
6668                                                 // check now if it overlaps in lightmap projection space
6669                                                 triangles[j].surfaceindex;
6670                                                 if (triangles[j].
6671                                         }
6672                                 }
6673                                 //triangles[i].surfaceindex = surfaceindex++;
6674                                 for (surfaceindex = 0;surfaceindex < numsurfaces;surfaceindex++)
6675                                 {
6676                                         if (surfaces[surfaceindex].texture != texture)
6677                                                 continue;
6678                                         // check if any triangles already in this surface overlap in lightmap projection space
6679
6680                                         {
6681                                         }
6682                                         break;
6683                                 }
6684                         }
6685                         // let the collision code simply use the surfaces
6686                         mleaf->containscollisionsurfaces = mleaf->combinedsupercontents != 0;
6687                         mleaf->numleafsurfaces = ?;
6688                         mleaf->firstleafsurface = ?;
6689                 }
6690                 // push combinedsupercontents up to the parent
6691                 if (mnodeparent)
6692                         mnodeparent->combinedsupercontents |= mleaf->combinedsupercontents;
6693         }
6694 }
6695 #endif
6696
6697 void Mod_OBJ_Load(dp_model_t *mod, void *buffer, void *bufferend)
6698 {
6699 #ifdef OBJWORKS
6700         const char *textbase = (char *)buffer, *text = textbase;
6701         char *s;
6702         char *argv[512];
6703         char line[1024];
6704         char materialname[MAX_QPATH];
6705         int j, index1, index2, index3, first, prev, index;
6706         int argc;
6707         int linelen;
6708         int numtriangles = 0;
6709         int maxtriangles = 131072;
6710         objtriangle_t *triangles = Mem_Alloc(tempmempool, maxtriangles * sizeof(*triangles));
6711         int linenumber = 0;
6712         int maxtextures = 256, numtextures = 0, textureindex = 0;
6713         int maxv = 1024, numv = 0;
6714         int maxvt = 1024, numvt = 0;
6715         int maxvn = 1024, numvn = 0;
6716         char **texturenames;
6717         float *v = Mem_Alloc(tempmempool, maxv * sizeof(float[3]));
6718         float *vt = Mem_Alloc(tempmempool, maxvt * sizeof(float[2]));
6719         float *vn = Mem_Alloc(tempmempool, maxvn * sizeof(float[3]));
6720         objvertex_t vfirst, vprev, vcurrent;
6721         float mins[3];
6722         float maxs[3];
6723 #if 0
6724         int hashindex;
6725         int maxverthash = 65536, numverthash = 0;
6726         int numhashindex = 65536;
6727         struct objverthash_s
6728         {
6729                 struct objverthash_s *next;
6730                 int s;
6731                 int v;
6732                 int vt;
6733                 int vn;
6734         }
6735         *hash, **verthash = Mem_Alloc(tempmempool, numhashindex * sizeof(*verthash)), *verthashdata = Mem_Alloc(tempmempool, maxverthash * sizeof(*verthashdata)), *oldverthashdata;
6736 #endif
6737
6738         dpsnprintf(materialname, sizeof(materialname), "%s", loadmodel->name);
6739
6740         loadmodel->modeldatatypestring = "OBJ";
6741
6742         loadmodel->type = mod_obj;
6743         loadmodel->soundfromcenter = true;
6744         loadmodel->TraceBox = Mod_OBJ_TraceBox;
6745         loadmodel->TraceLine = Mod_OBJ_TraceLine;
6746         loadmodel->TracePoint = Mod_OBJ_TracePoint;
6747         loadmodel->PointSuperContents = Mod_OBJ_PointSuperContents;
6748         loadmodel->brush.TraceLineOfSight = Mod_OBJ_TraceLineOfSight;
6749         loadmodel->brush.SuperContentsFromNativeContents = Mod_OBJ_SuperContentsFromNativeContents;
6750         loadmodel->brush.NativeContentsFromSuperContents = Mod_OBJ_NativeContentsFromSuperContents;
6751         loadmodel->brush.GetPVS = Mod_OBJ_GetPVS;
6752         loadmodel->brush.FatPVS = Mod_OBJ_FatPVS;
6753         loadmodel->brush.BoxTouchingPVS = Mod_OBJ_BoxTouchingPVS;
6754         loadmodel->brush.BoxTouchingLeafPVS = Mod_OBJ_BoxTouchingLeafPVS;
6755         loadmodel->brush.BoxTouchingVisibleLeafs = Mod_OBJ_BoxTouchingVisibleLeafs;
6756         loadmodel->brush.FindBoxClusters = Mod_OBJ_FindBoxClusters;
6757         loadmodel->brush.LightPoint = Mod_OBJ_LightPoint;
6758         loadmodel->brush.FindNonSolidLocation = Mod_OBJ_FindNonSolidLocation;
6759         loadmodel->brush.AmbientSoundLevelsForPoint = NULL;
6760         loadmodel->brush.RoundUpToHullSize = NULL;
6761         loadmodel->brush.PointInLeaf = Mod_OBJ_PointInLeaf;
6762         loadmodel->Draw = R_Q1BSP_Draw;
6763         loadmodel->DrawDepth = R_Q1BSP_DrawDepth;
6764         loadmodel->DrawDebug = R_Q1BSP_DrawDebug;
6765         loadmodel->DrawPrepass = R_Q1BSP_DrawPrepass;
6766         loadmodel->GetLightInfo = R_Q1BSP_GetLightInfo;
6767         loadmodel->CompileShadowMap = R_Q1BSP_CompileShadowMap;
6768         loadmodel->DrawShadowMap = R_Q1BSP_DrawShadowMap;
6769         loadmodel->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
6770         loadmodel->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
6771         loadmodel->DrawLight = R_Q1BSP_DrawLight;
6772
6773         VectorClear(mins);
6774         VectorClear(maxs);
6775
6776         // parse the OBJ text now
6777         for(;;)
6778         {
6779                 if (!*text)
6780                         break;
6781                 linenumber++;
6782                 linelen = 0;
6783                 for (linelen = 0;text[linelen] && text[linelen] != '\r' && text[linelen] != '\n';linelen++)
6784                         line[linelen] = text[linelen];
6785                 line[linelen] = 0;
6786                 for (argc = 0;argc < (int)(sizeof(argv)/sizeof(argv[0]));argc++)
6787                         argv[argc] = "";
6788                 argc = 0;
6789                 s = line;
6790                 while (*s == ' ' || *s == '\t')
6791                         s++;
6792                 while (*s)
6793                 {
6794                         argv[argc++] = s;
6795                         while (*s > ' ')
6796                                 s++;
6797                         if (!*s)
6798                                 break;
6799                         *s++ = 0;
6800                         while (*s == ' ' || *s == '\t')
6801                                 s++;
6802                 }
6803                 if (!argc)
6804                         continue;
6805                 if (argv[0][0] == '#')
6806                         continue;
6807                 if (!strcmp(argv[0], "v"))
6808                 {
6809                         if (maxv <= numv)
6810                         {
6811                                 float *oldv = v;
6812                                 maxv *= 2;
6813                                 v = Mem_Alloc(tempmempool, maxv * sizeof(float[3]));
6814                                 if (oldv)
6815                                 {
6816                                         memcpy(v, oldv, numv * sizeof(float[3]));
6817                                         Mem_Free(oldv);
6818                                 }
6819                         }
6820                         v[numv*3+0] = atof(argv[1]);
6821                         v[numv*3+1] = atof(argv[2]);
6822                         v[numv*3+2] = atof(argv[3]);
6823                         numv++;
6824                 }
6825                 else if (!strcmp(argv[0], "vt"))
6826                 {
6827                         if (maxvt <= numvt)
6828                         {
6829                                 float *oldvt = vt;
6830                                 maxvt *= 2;
6831                                 vt = Mem_Alloc(tempmempool, maxvt * sizeof(float[2]));
6832                                 if (oldvt)
6833                                 {
6834                                         memcpy(vt, oldvt, numvt * sizeof(float[2]));
6835                                         Mem_Free(oldvt);
6836                                 }
6837                         }
6838                         vt[numvt*2+0] = atof(argv[1]);
6839                         vt[numvt*2+1] = atof(argv[2]);
6840                         numvt++;
6841                 }
6842                 else if (!strcmp(argv[0], "vn"))
6843                 {
6844                         if (maxvn <= numvn)
6845                         {
6846                                 float *oldvn = vn;
6847                                 maxvn *= 2;
6848                                 vn = Mem_Alloc(tempmempool, maxvn * sizeof(float[3]));
6849                                 if (oldvn)
6850                                 {
6851                                         memcpy(vn, oldvn, numvn * sizeof(float[3]));
6852                                         Mem_Free(oldvn);
6853                                 }
6854                         }
6855                         vn[numvn*3+0] = atof(argv[1]);
6856                         vn[numvn*3+1] = atof(argv[2]);
6857                         vn[numvn*3+2] = atof(argv[3]);
6858                         numvn++;
6859                 }
6860                 else if (!strcmp(argv[0], "f"))
6861                 {
6862                         for (j = 1;j < argc;j++)
6863                         {
6864                                 index1 = atoi(argv[j]);
6865                                 while(argv[j][0] && argv[j][0] != '/')
6866                                         argv[j]++;
6867                                 if (argv[j][0])
6868                                         argv[j]++;
6869                                 index2 = atoi(argv[j]);
6870                                 while(argv[j][0] && argv[j][0] != '/')
6871                                         argv[j]++;
6872                                 if (argv[j][0])
6873                                         argv[j]++;
6874                                 index3 = atoi(argv[j]);
6875                                 // negative refers to a recent vertex
6876                                 // zero means not specified
6877                                 // positive means an absolute vertex index
6878                                 if (index1 < 0)
6879                                         index1 = numv - index1;
6880                                 if (index2 < 0)
6881                                         index2 = numvt - index2;
6882                                 if (index3 < 0)
6883                                         index3 = numvn - index3;
6884                                 VectorCopy(v + 3*index1, vcurrent.v);
6885                                 Vector2Copy(vt + 2*index2, vcurrent.vt);
6886                                 VectorCopy(vn + 3*index3, vcurrent.vn);
6887                                 if (numtriangles == 0)
6888                                 {
6889                                         VectorCopy(vcurrent.v, mins);
6890                                         VectorCopy(vcurrent.v, maxs);
6891                                 }
6892                                 else
6893                                 {
6894                                         mins[0] = min(mins[0], vcurrent.v[0]);
6895                                         mins[1] = min(mins[1], vcurrent.v[1]);
6896                                         mins[2] = min(mins[2], vcurrent.v[2]);
6897                                         maxs[0] = max(maxs[0], vcurrent.v[0]);
6898                                         maxs[1] = max(maxs[1], vcurrent.v[1]);
6899                                         maxs[2] = max(maxs[2], vcurrent.v[2]);
6900                                 }
6901                                 if (j == 1)
6902                                         vfirst = vcurrent;
6903                                 else if (j >= 3)
6904                                 {
6905                                         if (maxtriangles <= numtriangles)
6906                                         {
6907                                                 objtriangle_t *oldtriangles = triangles;
6908                                                 maxtriangles *= 2;
6909                                                 triangles = Mem_Alloc(tempmempool, numtriangles * sizeof(*triangles));
6910                                                 if (oldtriangles)
6911                                                 {
6912                                                         memcpy(triangles, oldtriangles, numtriangles * sizeof(*triangles));
6913                                                         Mem_Free(oldtriangles);
6914                                                 }
6915                                         }
6916                                         triangles[numtriangles].textureindex = textureindex;
6917                                         triangles[numtriangles].vertex[0] = vfirst;
6918                                         triangles[numtriangles].vertex[1] = vprev;
6919                                         triangles[numtriangles].vertex[2] = vcurrent;
6920                                         numtriangles++;
6921                                 }
6922                                 vprev = vcurrent;
6923                                 prev = index;
6924                         }
6925                 }
6926                 else if (!strcmp(argv[0], "o") || !strcmp(argv[0], "g"))
6927                         ;
6928                 else if (!!strcmp(argv[0], "usemtl"))
6929                 {
6930                         for (i = 0;i < numtextures;i++)
6931                                 if (!strcmp(texturenames[numtextures], argv[1]))
6932                                         break;
6933                         if (i < numtextures)
6934                                 texture = textures + i;
6935                         else
6936                         {
6937                                 if (maxtextures <= numtextures)
6938                                 {
6939                                         texture_t *oldtextures = textures;
6940                                         maxtextures *= 2;
6941                                         textures = Mem_Alloc(tempmempool, maxtextures * sizeof(*textures));
6942                                         if (oldtextures)
6943                                         {
6944                                                 memcpy(textures, oldtextures, numtexutres * sizeof(*textures));
6945                                                 Mem_Free(oldtextures);
6946                                         }
6947                                 }
6948                                 textureindex = numtextures++;
6949                                 texturenames[textureindex] = Mem_Alloc(tempmempool, strlen(argv[1]) + 1);
6950                                 memcpy(texturenames[textureindex], argv[1], strlen(argv[1]) + 1);
6951                         }
6952                 }
6953                 text += linelen;
6954                 if (*text == '\r')
6955                         text++;
6956                 if (*text == '\n')
6957                         text++;
6958         }
6959
6960         // now that we have the OBJ data loaded as-is, we can convert it
6961
6962         // load the textures
6963         loadmodel->num_textures = numtextures;
6964         loadmodel->data_textures = Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
6965         for (i = 0;i < numtextures;i++)
6966                 Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i, texturenames[i], true, true, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0) | TEXF_COMPRESS);
6967
6968         // free the texturenames array since we are now done with it
6969         for (i = 0;i < numtextures;i++)
6970         {
6971                 Mem_Free(texturenames[i]);
6972                 texturenames[i] = NULL;
6973         }
6974         Mem_Free(texturenames);
6975         texturenames = NULL;
6976
6977         // copy the model bounds, then enlarge the yaw and rotated bounds according to radius
6978         VectorCopy(mins, loadmodel->normalmins);
6979         VectorCopy(maxs, loadmodel->normalmaxs);
6980         dist = max(fabs(loadmodel->normalmins[0]), fabs(loadmodel->normalmaxs[0]));
6981         modelyawradius = max(fabs(loadmodel->normalmins[1]), fabs(loadmodel->normalmaxs[1]));
6982         modelyawradius = dist*dist+modelyawradius*modelyawradius;
6983         modelradius = max(fabs(loadmodel->normalmins[2]), fabs(loadmodel->normalmaxs[2]));
6984         modelradius = modelyawradius + modelradius * modelradius;
6985         modelyawradius = sqrt(modelyawradius);
6986         modelradius = sqrt(modelradius);
6987         loadmodel->yawmins[0] = loadmodel->yawmins[1] = -modelyawradius;
6988         loadmodel->yawmins[2] = loadmodel->normalmins[2];
6989         loadmodel->yawmaxs[0] = loadmodel->yawmaxs[1] =  modelyawradius;
6990         loadmodel->yawmaxs[2] = loadmodel->normalmaxs[2];
6991         loadmodel->rotatedmins[0] = loadmodel->rotatedmins[1] = loadmodel->rotatedmins[2] = -modelradius;
6992         loadmodel->rotatedmaxs[0] = loadmodel->rotatedmaxs[1] = loadmodel->rotatedmaxs[2] =  modelradius;
6993         loadmodel->radius = modelradius;
6994         loadmodel->radius2 = modelradius * modelradius;
6995
6996         // make sure the temp triangle buffer is big enough for BSP building
6997         maxclippedtriangles = numtriangles*4;
6998         if (numtriangles > 0)
6999         {
7000                 clippedfronttriangles = Mem_Alloc(loadmodel->mempool, maxclippedtriangles * 2 * sizeof(objtriangle_t));
7001                 clippedbacktriangles = clippedfronttriangles + maxclippedtriangles;
7002         }
7003
7004         // 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
7005         loadmodel->brush.num_leafs = 0;
7006         loadmodel->brush.num_nodes = 0;
7007         Mem_ExpandableArray_NewArray(&nodesarray, loadmodel->mempool, sizeof(objnode_t), 1024);
7008         rootnode = Mod_OBJ_BSPNodeForTriangles(triangles, numtriangles, mins, maxs, &nodesarray, maxclippedtriangles, clippedfronttriangles, clippedbacktriangles);
7009
7010         // convert the BSP tree to mnode_t and mleaf_t structures and convert the triangles to msurface_t...
7011         loadmodel->brush.data_leafs = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafs * sizeof(mleaf_t));
7012         loadmodel->brush.data_nodes = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(mnode_t));
7013         loadmodel->brush.data_planes = Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(mplane_t));
7014         loadmodel->brush.num_leafs = 0;
7015         loadmodel->brush.num_nodes = 0;
7016         loadmodel->brush.num_planes = 0;
7017         Mod_OBJ_ConvertAndFreeBSPNode(rootnode);
7018
7019         if (clippedfronttriangles)
7020                 Mem_Free(clippedfronttriangles);
7021         maxclippedtriangles = 0;
7022         clippedfronttriangles = NULL;
7023         clippedbacktriangles = NULL;
7024
7025 --- NOTHING DONE PAST THIS POINT ---
7026
7027         loadmodel->numskins = LittleLong(pinmodel->num_skins);
7028         numxyz = LittleLong(pinmodel->num_xyz);
7029         numst = LittleLong(pinmodel->num_st);
7030         loadmodel->surfmesh.num_triangles = LittleLong(pinmodel->num_tris);
7031         loadmodel->numframes = LittleLong(pinmodel->num_frames);
7032         loadmodel->surfmesh.num_morphframes = loadmodel->numframes;
7033         loadmodel->num_poses = loadmodel->surfmesh.num_morphframes;
7034         skinwidth = LittleLong(pinmodel->skinwidth);
7035         skinheight = LittleLong(pinmodel->skinheight);
7036         iskinwidth = 1.0f / skinwidth;
7037         iskinheight = 1.0f / skinheight;
7038
7039         loadmodel->num_surfaces = 1;
7040         loadmodel->nummodelsurfaces = loadmodel->num_surfaces;
7041         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]));
7042         loadmodel->data_surfaces = (msurface_t *)data;data += loadmodel->num_surfaces * sizeof(msurface_t);
7043         loadmodel->sortedmodelsurfaces = (int *)data;data += loadmodel->num_surfaces * sizeof(int);
7044         loadmodel->sortedmodelsurfaces[0] = 0;
7045         loadmodel->animscenes = (animscene_t *)data;data += loadmodel->numframes * sizeof(animscene_t);
7046         loadmodel->surfmesh.data_morphmd2framesize6f = (float *)data;data += loadmodel->numframes * sizeof(float[6]);
7047         loadmodel->surfmesh.data_element3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
7048         loadmodel->surfmesh.data_neighbor3i = (int *)data;data += loadmodel->surfmesh.num_triangles * sizeof(int[3]);
7049
7050         loadmodel->synctype = ST_RAND;
7051
7052         // load the skins
7053         inskin = (char *)(base + LittleLong(pinmodel->ofs_skins));
7054         skinfiles = Mod_LoadSkinFiles();
7055         if (skinfiles)
7056         {
7057                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
7058                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
7059                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
7060                 Mod_BuildAliasSkinsFromSkinFiles(loadmodel->data_textures, skinfiles, "default", "");
7061                 Mod_FreeSkinFiles(skinfiles);
7062         }
7063         else if (loadmodel->numskins)
7064         {
7065                 // skins found (most likely not a player model)
7066                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
7067                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
7068                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
7069                 for (i = 0;i < loadmodel->numskins;i++, inskin += MD2_SKINNAME)
7070                         Mod_LoadTextureFromQ3Shader(loadmodel->data_textures + i * loadmodel->num_surfaces, inskin, true, true, (r_mipskins.integer ? TEXF_MIPMAP : 0) | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP | TEXF_COMPRESS);
7071         }
7072         else
7073         {
7074                 // no skins (most likely a player model)
7075                 loadmodel->numskins = 1;
7076                 loadmodel->num_textures = loadmodel->num_surfaces * loadmodel->numskins;
7077                 loadmodel->num_texturesperskin = loadmodel->num_surfaces;
7078                 loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_surfaces * loadmodel->numskins * sizeof(texture_t));
7079                 Mod_BuildAliasSkinFromSkinFrame(loadmodel->data_textures, NULL);
7080         }
7081
7082         loadmodel->skinscenes = (animscene_t *)Mem_Alloc(loadmodel->mempool, sizeof(animscene_t) * loadmodel->numskins);
7083         for (i = 0;i < loadmodel->numskins;i++)
7084         {
7085                 loadmodel->skinscenes[i].firstframe = i;
7086                 loadmodel->skinscenes[i].framecount = 1;
7087                 loadmodel->skinscenes[i].loop = true;
7088                 loadmodel->skinscenes[i].framerate = 10;
7089         }
7090
7091         // load the triangles and stvert data
7092         inst = (unsigned short *)(base + LittleLong(pinmodel->ofs_st));
7093         intri = (md2triangle_t *)(base + LittleLong(pinmodel->ofs_tris));
7094         md2verthash = (struct md2verthash_s **)Mem_Alloc(tempmempool, 65536 * sizeof(hash));
7095         md2verthashdata = (struct md2verthash_s *)Mem_Alloc(tempmempool, loadmodel->surfmesh.num_triangles * 3 * sizeof(*hash));
7096         // swap the triangle list
7097         loadmodel->surfmesh.num_vertices = 0;
7098         for (i = 0;i < loadmodel->surfmesh.num_triangles;i++)
7099         {
7100                 for (j = 0;j < 3;j++)
7101                 {
7102                         xyz = (unsigned short) LittleShort (intri[i].index_xyz[j]);
7103                         st = (unsigned short) LittleShort (intri[i].index_st[j]);
7104                         if (xyz >= numxyz)
7105                         {
7106                                 Con_Printf("%s has an invalid xyz index (%i) on triangle %i, resetting to 0\n", loadmodel->name, xyz, i);
7107                                 xyz = 0;
7108                         }
7109                         if (st >= numst)
7110                         {
7111                                 Con_Printf("%s has an invalid st index (%i) on triangle %i, resetting to 0\n", loadmodel->name, st, i);
7112                                 st = 0;
7113                         }
7114                         hashindex = (xyz * 256 + st) & 65535;
7115                         for (hash = md2verthash[hashindex];hash;hash = hash->next)
7116                                 if (hash->xyz == xyz && hash->st == st)
7117                                         break;
7118                         if (hash == NULL)
7119                         {
7120                                 hash = md2verthashdata + loadmodel->surfmesh.num_vertices++;
7121                                 hash->xyz = xyz;
7122                                 hash->st = st;
7123                                 hash->next = md2verthash[hashindex];
7124                                 md2verthash[hashindex] = hash;
7125                         }
7126                         loadmodel->surfmesh.data_element3i[i*3+j] = (hash - md2verthashdata);
7127                 }
7128         }
7129
7130         vertremap = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->surfmesh.num_vertices * sizeof(int));
7131         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));
7132         loadmodel->surfmesh.data_texcoordtexture2f = (float *)data;data += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
7133         loadmodel->surfmesh.data_morphmdlvertex = (trivertx_t *)data;data += loadmodel->surfmesh.num_vertices * loadmodel->surfmesh.num_morphframes * sizeof(trivertx_t);
7134         for (i = 0;i < loadmodel->surfmesh.num_vertices;i++)
7135         {
7136                 int sts, stt;
7137                 hash = md2verthashdata + i;
7138                 vertremap[i] = hash->xyz;
7139                 sts = LittleShort(inst[hash->st*2+0]);
7140                 stt = LittleShort(inst[hash->st*2+1]);
7141                 if (sts < 0 || sts >= skinwidth || stt < 0 || stt >= skinheight)
7142                 {
7143                         Con_Printf("%s has an invalid skin coordinate (%i %i) on vert %i, changing to 0 0\n", loadmodel->name, sts, stt, i);
7144                         sts = 0;
7145                         stt = 0;
7146                 }
7147                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+0] = sts * iskinwidth;
7148                 loadmodel->surfmesh.data_texcoordtexture2f[i*2+1] = stt * iskinheight;
7149         }
7150
7151         Mem_Free(md2verthash);
7152         Mem_Free(md2verthashdata);
7153
7154         // generate ushort elements array if possible
7155         if (loadmodel->surfmesh.num_vertices <= 65536)
7156                 loadmodel->surfmesh.data_element3s = (unsigned short *)Mem_Alloc(loadmodel->mempool, sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles);
7157
7158         // load the frames
7159         datapointer = (base + LittleLong(pinmodel->ofs_frames));
7160         for (i = 0;i < loadmodel->surfmesh.num_morphframes;i++)
7161         {
7162                 int k;
7163                 trivertx_t *v;
7164                 trivertx_t *out;
7165                 pinframe = (md2frame_t *)datapointer;
7166                 datapointer += sizeof(md2frame_t);
7167                 // store the frame scale/translate into the appropriate array
7168                 for (j = 0;j < 3;j++)
7169                 {
7170                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+j] = LittleFloat(pinframe->scale[j]);
7171                         loadmodel->surfmesh.data_morphmd2framesize6f[i*6+3+j] = LittleFloat(pinframe->translate[j]);
7172                 }
7173                 // convert the vertices
7174                 v = (trivertx_t *)datapointer;
7175                 out = loadmodel->surfmesh.data_morphmdlvertex + i * loadmodel->surfmesh.num_vertices;
7176                 for (k = 0;k < loadmodel->surfmesh.num_vertices;k++)
7177                         out[k] = v[vertremap[k]];
7178                 datapointer += numxyz * sizeof(trivertx_t);
7179
7180                 strlcpy(loadmodel->animscenes[i].name, pinframe->name, sizeof(loadmodel->animscenes[i].name));
7181                 loadmodel->animscenes[i].firstframe = i;
7182                 loadmodel->animscenes[i].framecount = 1;
7183                 loadmodel->animscenes[i].framerate = 10;
7184                 loadmodel->animscenes[i].loop = true;
7185         }
7186
7187         Mem_Free(vertremap);
7188
7189         Mod_MakeSortedSurfaces(loadmodel);
7190         Mod_BuildTriangleNeighbors(loadmodel->surfmesh.data_neighbor3i, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles);
7191         Mod_Alias_CalculateBoundingBox();
7192         Mod_Alias_MorphMesh_CompileFrames();
7193
7194         surface = loadmodel->data_surfaces;
7195         surface->texture = loadmodel->data_textures;
7196         surface->num_firsttriangle = 0;
7197         surface->num_triangles = loadmodel->surfmesh.num_triangles;
7198         surface->num_firstvertex = 0;
7199         surface->num_vertices = loadmodel->surfmesh.num_vertices;
7200
7201         loadmodel->surfmesh.isanimated = false;
7202
7203         if (loadmodel->surfmesh.data_element3s)
7204                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
7205                         loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
7206 #endif
7207 }
7208
7209 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, dp_model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
7210 {
7211         // we already have done PVS culling at this point...
7212         // so we don't need to do it again.
7213
7214         int i;
7215         vec3_t testorigin, mins, maxs;
7216
7217         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
7218         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
7219         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
7220
7221         if(model->brush.TraceLineOfSight(model, eye, testorigin))
7222                 return 1;
7223
7224         // expand the box a little
7225         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
7226         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
7227         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
7228         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
7229         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
7230         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
7231
7232         for(i = 0; i != numsamples; ++i)
7233         {
7234                 testorigin[0] = lhrandom(mins[0], maxs[0]);
7235                 testorigin[1] = lhrandom(mins[1], maxs[1]);
7236                 testorigin[2] = lhrandom(mins[2], maxs[2]);
7237
7238                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
7239                         return 1;
7240         }
7241
7242         return 0;
7243 }
7244