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