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 halflifebsp = {0, "halflifebsp", "0", "indicates the current map is hlbsp format (useful to know because of different bounding box sizes)"};
  31 cvar_t mcbsp = {0, "mcbsp", "0", "indicates the current map is mcbsp format (useful to know because of different bounding box sizes)"};
  32 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  33 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1", "whether to use RGBA (32bit) or RGB (24bit) lightmaps"};
  34 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)"};
  35 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)"};
  36 cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  37 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  38 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  39 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)"};
  40 cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  41 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)"};
  42 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  43 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  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
  47 static texture_t mod_q1bsp_texture_solid;
  48 static texture_t mod_q1bsp_texture_sky;
  49 static texture_t mod_q1bsp_texture_lava;
  50 static texture_t mod_q1bsp_texture_slime;
  51 static texture_t mod_q1bsp_texture_water;
  52
  53 void Mod_BrushInit(void)
  54 {
  55 //      Cvar_RegisterVariable(&r_subdivide_size);
  56         Cvar_RegisterVariable(&halflifebsp);
  57         Cvar_RegisterVariable(&mcbsp);
  58         Cvar_RegisterVariable(&r_novis);
  59         Cvar_RegisterVariable(&r_lightmaprgba);
  60         Cvar_RegisterVariable(&r_nosurftextures);
  61         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  62         Cvar_RegisterVariable(&r_subdivisions_mintess);
  63         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  64         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  65         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  69         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  70         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  71         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  72
  73         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  74         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  75         mod_q1bsp_texture_solid.surfaceflags = 0;
  76         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  77
  78         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  79         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  80         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  81         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  82
  83         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  84         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  85         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  86         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  87
  88         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  89         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  90         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  91         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  92
  93         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
  94         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
  95         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  96         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
  97 }
  98
  99 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 100 {
 101         mnode_t *node;
 102
 103         if (model == NULL)
 104                 return NULL;
 105
 106         // LordHavoc: modified to start at first clip node,
 107         // in other words: first node of the (sub)model
 108         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 109         while (node->plane)
 110                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 111
 112         return (mleaf_t *)node;
 113 }
 114
 115 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, unsigned char *out, int outsize)
 116 {
 117         int i;
 118         mleaf_t *leaf;
 119         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 120         if (leaf)
 121         {
 122                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 123                 if (i)
 124                 {
 125                         memcpy(out, leaf->ambient_sound_level, i);
 126                         out += i;
 127                         outsize -= i;
 128                 }
 129         }
 130         if (outsize)
 131                 memset(out, 0, outsize);
 132 }
 133
 134 static int Mod_Q1BSP_FindBoxClusters(model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 135 {
 136         int numclusters = 0;
 137         int nodestackindex = 0;
 138         mnode_t *node, *nodestack[1024];
 139         if (!model->brush.num_pvsclusters)
 140                 return -1;
 141         node = model->brush.data_nodes;
 142         for (;;)
 143         {
 144 #if 1
 145                 if (node->plane)
 146                 {
 147                         // node - recurse down the BSP tree
 148                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 149                         if (sides < 3)
 150                         {
 151                                 if (sides == 0)
 152                                         return -1; // ERROR: NAN bounding box!
 153                                 // box is on one side of plane, take that path
 154                                 node = node->children[sides-1];
 155                         }
 156                         else
 157                         {
 158                                 // box crosses plane, take one path and remember the other
 159                                 if (nodestackindex < 1024)
 160                                         nodestack[nodestackindex++] = node->children[0];
 161                                 node = node->children[1];
 162                         }
 163                         continue;
 164                 }
 165                 else
 166                 {
 167                         // leaf - add clusterindex to list
 168                         if (numclusters < maxclusters)
 169                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 170                         numclusters++;
 171                 }
 172 #else
 173                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 174                 {
 175                         if (node->plane)
 176                         {
 177                                 if (nodestackindex < 1024)
 178                                         nodestack[nodestackindex++] = node->children[0];
 179                                 node = node->children[1];
 180                                 continue;
 181                         }
 182                         else
 183                         {
 184                                 // leaf - add clusterindex to list
 185                                 if (numclusters < maxclusters)
 186                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 187                                 numclusters++;
 188                         }
 189                 }
 190 #endif
 191                 // try another path we didn't take earlier
 192                 if (nodestackindex == 0)
 193                         break;
 194                 node = nodestack[--nodestackindex];
 195         }
 196         // return number of clusters found (even if more than the maxclusters)
 197         return numclusters;
 198 }
 199
 200 static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 201 {
 202         int nodestackindex = 0;
 203         mnode_t *node, *nodestack[1024];
 204         if (!model->brush.num_pvsclusters)
 205                 return true;
 206         node = model->brush.data_nodes;
 207         for (;;)
 208         {
 209 #if 1
 210                 if (node->plane)
 211                 {
 212                         // node - recurse down the BSP tree
 213                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 214                         if (sides < 3)
 215                         {
 216                                 if (sides == 0)
 217                                         return -1; // ERROR: NAN bounding box!
 218                                 // box is on one side of plane, take that path
 219                                 node = node->children[sides-1];
 220                         }
 221                         else
 222                         {
 223                                 // box crosses plane, take one path and remember the other
 224                                 if (nodestackindex < 1024)
 225                                         nodestack[nodestackindex++] = node->children[0];
 226                                 node = node->children[1];
 227                         }
 228                         continue;
 229                 }
 230                 else
 231                 {
 232                         // leaf - check cluster bit
 233                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 234                         if (CHECKPVSBIT(pvs, clusterindex))
 235                         {
 236                                 // it is visible, return immediately with the news
 237                                 return true;
 238                         }
 239                 }
 240 #else
 241                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 242                 {
 243                         if (node->plane)
 244                         {
 245                                 if (nodestackindex < 1024)
 246                                         nodestack[nodestackindex++] = node->children[0];
 247                                 node = node->children[1];
 248                                 continue;
 249                         }
 250                         else
 251                         {
 252                                 // leaf - check cluster bit
 253                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 254                                 if (CHECKPVSBIT(pvs, clusterindex))
 255                                 {
 256                                         // it is visible, return immediately with the news
 257                                         return true;
 258                                 }
 259                         }
 260                 }
 261 #endif
 262                 // nothing to see here, try another path we didn't take earlier
 263                 if (nodestackindex == 0)
 264                         break;
 265                 node = nodestack[--nodestackindex];
 266         }
 267         // it is not visible
 268         return false;
 269 }
 270
 271 static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 272 {
 273         int nodestackindex = 0;
 274         mnode_t *node, *nodestack[1024];
 275         if (!model->brush.num_leafs)
 276                 return true;
 277         node = model->brush.data_nodes;
 278         for (;;)
 279         {
 280 #if 1
 281                 if (node->plane)
 282                 {
 283                         // node - recurse down the BSP tree
 284                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 285                         if (sides < 3)
 286                         {
 287                                 if (sides == 0)
 288                                         return -1; // ERROR: NAN bounding box!
 289                                 // box is on one side of plane, take that path
 290                                 node = node->children[sides-1];
 291                         }
 292                         else
 293                         {
 294                                 // box crosses plane, take one path and remember the other
 295                                 if (nodestackindex < 1024)
 296                                         nodestack[nodestackindex++] = node->children[0];
 297                                 node = node->children[1];
 298                         }
 299                         continue;
 300                 }
 301                 else
 302                 {
 303                         // leaf - check cluster bit
 304                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 305                         if (CHECKPVSBIT(pvs, clusterindex))
 306                         {
 307                                 // it is visible, return immediately with the news
 308                                 return true;
 309                         }
 310                 }
 311 #else
 312                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 313                 {
 314                         if (node->plane)
 315                         {
 316                                 if (nodestackindex < 1024)
 317                                         nodestack[nodestackindex++] = node->children[0];
 318                                 node = node->children[1];
 319                                 continue;
 320                         }
 321                         else
 322                         {
 323                                 // leaf - check cluster bit
 324                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 325                                 if (CHECKPVSBIT(pvs, clusterindex))
 326                                 {
 327                                         // it is visible, return immediately with the news
 328                                         return true;
 329                                 }
 330                         }
 331                 }
 332 #endif
 333                 // nothing to see here, try another path we didn't take earlier
 334                 if (nodestackindex == 0)
 335                         break;
 336                 node = nodestack[--nodestackindex];
 337         }
 338         // it is not visible
 339         return false;
 340 }
 341
 342 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 343 {
 344         int nodestackindex = 0;
 345         mnode_t *node, *nodestack[1024];
 346         if (!model->brush.num_leafs)
 347                 return true;
 348         node = model->brush.data_nodes;
 349         for (;;)
 350         {
 351 #if 1
 352                 if (node->plane)
 353                 {
 354                         // node - recurse down the BSP tree
 355                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 356                         if (sides < 3)
 357                         {
 358                                 if (sides == 0)
 359                                         return -1; // ERROR: NAN bounding box!
 360                                 // box is on one side of plane, take that path
 361                                 node = node->children[sides-1];
 362                         }
 363                         else
 364                         {
 365                                 // box crosses plane, take one path and remember the other
 366                                 if (nodestackindex < 1024)
 367                                         nodestack[nodestackindex++] = node->children[0];
 368                                 node = node->children[1];
 369                         }
 370                         continue;
 371                 }
 372                 else
 373                 {
 374                         // leaf - check if it is visible
 375                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 376                         {
 377                                 // it is visible, return immediately with the news
 378                                 return true;
 379                         }
 380                 }
 381 #else
 382                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 383                 {
 384                         if (node->plane)
 385                         {
 386                                 if (nodestackindex < 1024)
 387                                         nodestack[nodestackindex++] = node->children[0];
 388                                 node = node->children[1];
 389                                 continue;
 390                         }
 391                         else
 392                         {
 393                                 // leaf - check if it is visible
 394                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 395                                 {
 396                                         // it is visible, return immediately with the news
 397                                         return true;
 398                                 }
 399                         }
 400                 }
 401 #endif
 402                 // nothing to see here, try another path we didn't take earlier
 403                 if (nodestackindex == 0)
 404                         break;
 405                 node = nodestack[--nodestackindex];
 406         }
 407         // it is not visible
 408         return false;
 409 }
 410
 411 typedef struct findnonsolidlocationinfo_s
 412 {
 413         vec3_t center;
 414         vec_t radius;
 415         vec3_t nudge;
 416         vec_t bestdist;
 417         model_t *model;
 418 }
 419 findnonsolidlocationinfo_t;
 420
 421 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 422 {
 423         int i, surfacenum, k, *tri, *mark;
 424         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 425         msurface_t *surface;
 426         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 427         {
 428                 surface = info->model->data_surfaces + *mark;
 429                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 430                 {
 431                         for (k = 0;k < surface->num_triangles;k++)
 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         }
 517 }
 518
 519 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 520 {
 521         if (node->plane)
 522         {
 523                 float f = PlaneDiff(info->center, node->plane);
 524                 if (f >= -info->bestdist)
 525                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 526                 if (f <= info->bestdist)
 527                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 528         }
 529         else
 530         {
 531                 if (((mleaf_t *)node)->numleafsurfaces)
 532                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 533         }
 534 }
 535
 536 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
 537 {
 538         int i;
 539         findnonsolidlocationinfo_t info;
 540         if (model == NULL)
 541         {
 542                 VectorCopy(in, out);
 543                 return;
 544         }
 545         VectorCopy(in, info.center);
 546         info.radius = radius;
 547         info.model = model;
 548         i = 0;
 549         do
 550         {
 551                 VectorClear(info.nudge);
 552                 info.bestdist = radius;
 553                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 554                 VectorAdd(info.center, info.nudge, info.center);
 555         }
 556         while (info.bestdist < radius && ++i < 10);
 557         VectorCopy(info.center, out);
 558 }
 559
 560 int Mod_Q1BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 561 {
 562         switch(nativecontents)
 563         {
 564                 case CONTENTS_EMPTY:
 565                         return 0;
 566                 case CONTENTS_SOLID:
 567                         return SUPERCONTENTS_SOLID;
 568                 case CONTENTS_WATER:
 569                         return SUPERCONTENTS_WATER;
 570                 case CONTENTS_SLIME:
 571                         return SUPERCONTENTS_SLIME;
 572                 case CONTENTS_LAVA:
 573                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 574                 case CONTENTS_SKY:
 575                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 576         }
 577         return 0;
 578 }
 579
 580 int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
 581 {
 582         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 583                 return CONTENTS_SOLID;
 584         if (supercontents & SUPERCONTENTS_SKY)
 585                 return CONTENTS_SKY;
 586         if (supercontents & SUPERCONTENTS_LAVA)
 587                 return CONTENTS_LAVA;
 588         if (supercontents & SUPERCONTENTS_SLIME)
 589                 return CONTENTS_SLIME;
 590         if (supercontents & SUPERCONTENTS_WATER)
 591                 return CONTENTS_WATER;
 592         return CONTENTS_EMPTY;
 593 }
 594
 595 typedef struct RecursiveHullCheckTraceInfo_s
 596 {
 597         // the hull we're tracing through
 598         const hull_t *hull;
 599
 600         // the trace structure to fill in
 601         trace_t *trace;
 602
 603         // start, end, and end - start (in model space)
 604         double start[3];
 605         double end[3];
 606         double dist[3];
 607 }
 608 RecursiveHullCheckTraceInfo_t;
 609
 610 // 1/32 epsilon to keep floating point happy
 611 #define DIST_EPSILON (0.03125)
 612
 613 #define HULLCHECKSTATE_EMPTY 0
 614 #define HULLCHECKSTATE_SOLID 1
 615 #define HULLCHECKSTATE_DONE 2
 616
 617 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 618 {
 619         // status variables, these don't need to be saved on the stack when
 620         // recursing...  but are because this should be thread-safe
 621         // (note: tracing against a bbox is not thread-safe, yet)
 622         int ret;
 623         mplane_t *plane;
 624         double t1, t2;
 625
 626         // variables that need to be stored on the stack when recursing
 627         dclipnode_t *node;
 628         int side;
 629         double midf, mid[3];
 630
 631         // LordHavoc: a goto!  everyone flee in terror... :)
 632 loc0:
 633         // check for empty
 634         if (num < 0)
 635         {
 636                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 637                 if (!t->trace->startfound)
 638                 {
 639                         t->trace->startfound = true;
 640                         t->trace->startsupercontents |= num;
 641                 }
 642                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 643                         t->trace->inwater = true;
 644                 if (num == 0)
 645                         t->trace->inopen = true;
 646                 if (num & SUPERCONTENTS_SOLID)
 647                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 648                 else if (num & SUPERCONTENTS_SKY)
 649                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 650                 else if (num & SUPERCONTENTS_LAVA)
 651                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 652                 else if (num & SUPERCONTENTS_SLIME)
 653                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 654                 else
 655                         t->trace->hittexture = &mod_q1bsp_texture_water;
 656                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 657                 t->trace->hitsupercontents = num;
 658                 if (num & t->trace->hitsupercontentsmask)
 659                 {
 660                         // if the first leaf is solid, set startsolid
 661                         if (t->trace->allsolid)
 662                                 t->trace->startsolid = true;
 663 #if COLLISIONPARANOID >= 3
 664                         Con_Print("S");
 665 #endif
 666                         return HULLCHECKSTATE_SOLID;
 667                 }
 668                 else
 669                 {
 670                         t->trace->allsolid = false;
 671 #if COLLISIONPARANOID >= 3
 672                         Con_Print("E");
 673 #endif
 674                         return HULLCHECKSTATE_EMPTY;
 675                 }
 676         }
 677
 678         // find the point distances
 679         node = t->hull->clipnodes + num;
 680
 681         plane = t->hull->planes + node->planenum;
 682         if (plane->type < 3)
 683         {
 684                 t1 = p1[plane->type] - plane->dist;
 685                 t2 = p2[plane->type] - plane->dist;
 686         }
 687         else
 688         {
 689                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 690                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 691         }
 692
 693         if (t1 < 0)
 694         {
 695                 if (t2 < 0)
 696                 {
 697 #if COLLISIONPARANOID >= 3
 698                         Con_Print("<");
 699 #endif
 700                         num = node->children[1];
 701                         goto loc0;
 702                 }
 703                 side = 1;
 704         }
 705         else
 706         {
 707                 if (t2 >= 0)
 708                 {
 709 #if COLLISIONPARANOID >= 3
 710                         Con_Print(">");
 711 #endif
 712                         num = node->children[0];
 713                         goto loc0;
 714                 }
 715                 side = 0;
 716         }
 717
 718         // the line intersects, find intersection point
 719         // LordHavoc: this uses the original trace for maximum accuracy
 720 #if COLLISIONPARANOID >= 3
 721         Con_Print("M");
 722 #endif
 723         if (plane->type < 3)
 724         {
 725                 t1 = t->start[plane->type] - plane->dist;
 726                 t2 = t->end[plane->type] - plane->dist;
 727         }
 728         else
 729         {
 730                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 731                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 732         }
 733
 734         midf = t1 / (t1 - t2);
 735         midf = bound(p1f, midf, p2f);
 736         VectorMA(t->start, midf, t->dist, mid);
 737
 738         // recurse both sides, front side first
 739         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 740         // if this side is not empty, return what it is (solid or done)
 741         if (ret != HULLCHECKSTATE_EMPTY)
 742                 return ret;
 743
 744         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 745         // if other side is not solid, return what it is (empty or done)
 746         if (ret != HULLCHECKSTATE_SOLID)
 747                 return ret;
 748
 749         // front is air and back is solid, this is the impact point...
 750         if (side)
 751         {
 752                 t->trace->plane.dist = -plane->dist;
 753                 VectorNegate (plane->normal, t->trace->plane.normal);
 754         }
 755         else
 756         {
 757                 t->trace->plane.dist = plane->dist;
 758                 VectorCopy (plane->normal, t->trace->plane.normal);
 759         }
 760
 761         // calculate the true fraction
 762         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 763         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 764         midf = t1 / (t1 - t2);
 765         t->trace->realfraction = bound(0, midf, 1);
 766
 767         // calculate the return fraction which is nudged off the surface a bit
 768         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 769         t->trace->fraction = bound(0, midf, 1);
 770
 771 #if COLLISIONPARANOID >= 3
 772         Con_Print("D");
 773 #endif
 774         return HULLCHECKSTATE_DONE;
 775 }
 776
 777 //#if COLLISIONPARANOID < 2
 778 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 779 {
 780         while (num >= 0)
 781                 num = t->hull->clipnodes[num].children[(t->hull->planes[t->hull->clipnodes[num].planenum].type < 3 ? t->start[t->hull->planes[t->hull->clipnodes[num].planenum].type] : DotProduct(t->hull->planes[t->hull->clipnodes[num].planenum].normal, t->start)) < t->hull->planes[t->hull->clipnodes[num].planenum].dist];
 782         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 783         t->trace->startsupercontents |= num;
 784         if (num & SUPERCONTENTS_LIQUIDSMASK)
 785                 t->trace->inwater = true;
 786         if (num == 0)
 787                 t->trace->inopen = true;
 788         if (num & t->trace->hitsupercontentsmask)
 789         {
 790                 t->trace->allsolid = t->trace->startsolid = true;
 791                 return HULLCHECKSTATE_SOLID;
 792         }
 793         else
 794         {
 795                 t->trace->allsolid = t->trace->startsolid = false;
 796                 return HULLCHECKSTATE_EMPTY;
 797         }
 798 }
 799 //#endif
 800
 801 static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 802 {
 803         // this function currently only supports same size start and end
 804         double boxsize[3];
 805         RecursiveHullCheckTraceInfo_t rhc;
 806
 807         memset(&rhc, 0, sizeof(rhc));
 808         memset(trace, 0, sizeof(trace_t));
 809         rhc.trace = trace;
 810         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 811         rhc.trace->fraction = 1;
 812         rhc.trace->realfraction = 1;
 813         rhc.trace->allsolid = true;
 814         VectorSubtract(boxmaxs, boxmins, boxsize);
 815         if (boxsize[0] < 3)
 816                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 817         else if (model->brush.ismcbsp)
 818         {
 819                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 820                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 821                 else
 822                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 823         }
 824         else if (model->brush.ishlbsp)
 825         {
 826                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 827                 // minor float precision errors from the box being transformed around
 828                 if (boxsize[0] < 32.1)
 829                 {
 830                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 831                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 832                         else
 833                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 834                 }
 835                 else
 836                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 837         }
 838         else
 839         {
 840                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 841                 // minor float precision errors from the box being transformed around
 842                 if (boxsize[0] < 32.1)
 843                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 844                 else
 845                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 846         }
 847         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 848         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 849         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 850 #if COLLISIONPARANOID >= 2
 851         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]);
 852         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 853         {
 854
 855                 double test[3];
 856                 trace_t testtrace;
 857                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 858                 memset(&testtrace, 0, sizeof(trace_t));
 859                 rhc.trace = &testtrace;
 860                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 861                 rhc.trace->fraction = 1;
 862                 rhc.trace->realfraction = 1;
 863                 rhc.trace->allsolid = true;
 864                 VectorCopy(test, rhc.start);
 865                 VectorCopy(test, rhc.end);
 866                 VectorClear(rhc.dist);
 867                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 868                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 869                 if (!trace->startsolid && testtrace.startsolid)
 870                         Con_Printf(" - ended in solid!\n");
 871         }
 872         Con_Print("\n");
 873 #else
 874         if (VectorLength2(rhc.dist))
 875                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 876         else
 877                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 878 #endif
 879 }
 880
 881 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)
 882 {
 883 #if 1
 884         colbrushf_t cbox;
 885         colplanef_t cbox_planes[6];
 886         cbox.supercontents = boxsupercontents;
 887         cbox.numplanes = 6;
 888         cbox.numpoints = 0;
 889         cbox.numtriangles = 0;
 890         cbox.planes = cbox_planes;
 891         cbox.points = NULL;
 892         cbox.elements = NULL;
 893         cbox.markframe = 0;
 894         cbox.mins[0] = 0;
 895         cbox.mins[1] = 0;
 896         cbox.mins[2] = 0;
 897         cbox.maxs[0] = 0;
 898         cbox.maxs[1] = 0;
 899         cbox.maxs[2] = 0;
 900         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];
 901         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];
 902         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];
 903         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];
 904         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];
 905         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];
 906         cbox_planes[0].supercontents = boxsupercontents;cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 907         cbox_planes[1].supercontents = boxsupercontents;cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 908         cbox_planes[2].supercontents = boxsupercontents;cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 909         cbox_planes[3].supercontents = boxsupercontents;cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 910         cbox_planes[4].supercontents = boxsupercontents;cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 911         cbox_planes[5].supercontents = boxsupercontents;cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 912         memset(trace, 0, sizeof(trace_t));
 913         trace->hitsupercontentsmask = hitsupercontentsmask;
 914         trace->fraction = 1;
 915         trace->realfraction = 1;
 916         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 917 #else
 918         RecursiveHullCheckTraceInfo_t rhc;
 919         static hull_t box_hull;
 920         static dclipnode_t box_clipnodes[6];
 921         static mplane_t box_planes[6];
 922         // fill in a default trace
 923         memset(&rhc, 0, sizeof(rhc));
 924         memset(trace, 0, sizeof(trace_t));
 925         //To keep everything totally uniform, bounding boxes are turned into small
 926         //BSP trees instead of being compared directly.
 927         // create a temp hull from bounding box sizes
 928         box_planes[0].dist = cmaxs[0] - mins[0];
 929         box_planes[1].dist = cmins[0] - maxs[0];
 930         box_planes[2].dist = cmaxs[1] - mins[1];
 931         box_planes[3].dist = cmins[1] - maxs[1];
 932         box_planes[4].dist = cmaxs[2] - mins[2];
 933         box_planes[5].dist = cmins[2] - maxs[2];
 934 #if COLLISIONPARANOID >= 3
 935         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]);
 936 #endif
 937
 938         if (box_hull.clipnodes == NULL)
 939         {
 940                 int i, side;
 941
 942                 //Set up the planes and clipnodes so that the six floats of a bounding box
 943                 //can just be stored out and get a proper hull_t structure.
 944
 945                 box_hull.clipnodes = box_clipnodes;
 946                 box_hull.planes = box_planes;
 947                 box_hull.firstclipnode = 0;
 948                 box_hull.lastclipnode = 5;
 949
 950                 for (i = 0;i < 6;i++)
 951                 {
 952                         box_clipnodes[i].planenum = i;
 953
 954                         side = i&1;
 955
 956                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 957                         if (i != 5)
 958                                 box_clipnodes[i].children[side^1] = i + 1;
 959                         else
 960                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 961
 962                         box_planes[i].type = i>>1;
 963                         box_planes[i].normal[i>>1] = 1;
 964                 }
 965         }
 966
 967         // trace a line through the generated clipping hull
 968         //rhc.boxsupercontents = boxsupercontents;
 969         rhc.hull = &box_hull;
 970         rhc.trace = trace;
 971         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 972         rhc.trace->fraction = 1;
 973         rhc.trace->realfraction = 1;
 974         rhc.trace->allsolid = true;
 975         VectorCopy(start, rhc.start);
 976         VectorCopy(end, rhc.end);
 977         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 978         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 979         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 980         if (rhc.trace->startsupercontents)
 981                 rhc.trace->startsupercontents = boxsupercontents;
 982 #endif
 983 }
 984
 985 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
 986 {
 987         int side;
 988         float front, back;
 989         float mid, distz = endz - startz;
 990
 991 loc0:
 992         if (!node->plane)
 993                 return false;           // didn't hit anything
 994
 995         switch (node->plane->type)
 996         {
 997         case PLANE_X:
 998                 node = node->children[x < node->plane->dist];
 999                 goto loc0;
1000         case PLANE_Y:
1001                 node = node->children[y < node->plane->dist];
1002                 goto loc0;
1003         case PLANE_Z:
1004                 side = startz < node->plane->dist;
1005                 if ((endz < node->plane->dist) == side)
1006                 {
1007                         node = node->children[side];
1008                         goto loc0;
1009                 }
1010                 // found an intersection
1011                 mid = node->plane->dist;
1012                 break;
1013         default:
1014                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1015                 front += startz * node->plane->normal[2];
1016                 back += endz * node->plane->normal[2];
1017                 side = front < node->plane->dist;
1018                 if ((back < node->plane->dist) == side)
1019                 {
1020                         node = node->children[side];
1021                         goto loc0;
1022                 }
1023                 // found an intersection
1024                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1025                 break;
1026         }
1027
1028         // go down front side
1029         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1030                 return true;    // hit something
1031         else
1032         {
1033                 // check for impact on this node
1034                 if (node->numsurfaces)
1035                 {
1036                         int i, ds, dt;
1037                         msurface_t *surface;
1038
1039                         surface = model->data_surfaces + node->firstsurface;
1040                         for (i = 0;i < node->numsurfaces;i++, surface++)
1041                         {
1042                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1043                                         continue;       // no lightmaps
1044
1045                                 ds = (int) (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];
1046                                 dt = (int) (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];
1047
1048                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1049                                 {
1050                                         unsigned char *lightmap;
1051                                         int lmwidth, lmheight, maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
1052                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1053                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1054                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1055                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1056
1057                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1058
1059                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1060                                         {
1061                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1062                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1063                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1064                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1065                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1066                                                 lightmap += size3;
1067                                         }
1068
1069 /*
1070 LordHavoc: here's the readable version of the interpolation
1071 code, not quite as easy for the compiler to optimize...
1072
1073 dsfrac is the X position in the lightmap pixel, * 16
1074 dtfrac is the Y position in the lightmap pixel, * 16
1075 r00 is top left corner, r01 is top right corner
1076 r10 is bottom left corner, r11 is bottom right corner
1077 g and b are the same layout.
1078 r0 and r1 are the top and bottom intermediate results
1079
1080 first we interpolate the top two points, to get the top
1081 edge sample
1082
1083         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1084         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1085         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1086
1087 then we interpolate the bottom two points, to get the
1088 bottom edge sample
1089
1090         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1091         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1092         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1093
1094 then we interpolate the top and bottom samples to get the
1095 middle sample (the one which was requested)
1096
1097         r = (((r1-r0) * dtfrac) >> 4) + r0;
1098         g = (((g1-g0) * dtfrac) >> 4) + g0;
1099         b = (((b1-b0) * dtfrac) >> 4) + b0;
1100 */
1101
1102                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1103                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1104                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1105                                         return true; // success
1106                                 }
1107                         }
1108                 }
1109
1110                 // go down back side
1111                 node = node->children[side ^ 1];
1112                 startz = mid;
1113                 distz = endz - startz;
1114                 goto loc0;
1115         }
1116 }
1117
1118 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1119 {
1120         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);
1121         VectorSet(diffusenormal, 0, 0, -1);
1122 }
1123
1124 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1125 {
1126         int c;
1127         unsigned char *outstart = out;
1128         while (out < outend)
1129         {
1130                 if (in == inend)
1131                 {
1132                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
1133                         return;
1134                 }
1135                 c = *in++;
1136                 if (c)
1137                         *out++ = c;
1138                 else
1139                 {
1140                         if (in == inend)
1141                         {
1142                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
1143                                 return;
1144                         }
1145                         for (c = *in++;c > 0;c--)
1146                         {
1147                                 if (out == outend)
1148                                 {
1149                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, out - outstart, outend - outstart);
1150                                         return;
1151                                 }
1152                                 *out++ = 0;
1153                         }
1154                 }
1155         }
1156 }
1157
1158 /*
1159 =============
1160 R_Q1BSP_LoadSplitSky
1161
1162 A sky texture is 256*128, with the right side being a masked overlay
1163 ==============
1164 */
1165 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1166 {
1167         int i, j;
1168         unsigned solidpixels[128*128], alphapixels[128*128];
1169
1170         // if sky isn't the right size, just use it as a solid layer
1171         if (width != 256 || height != 128)
1172         {
1173                 loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", width, height, src, bytesperpixel == 4 ? TEXTYPE_RGBA : TEXTYPE_PALETTE, TEXF_PRECACHE, bytesperpixel == 1 ? palette_complete : NULL);
1174                 loadmodel->brush.alphaskytexture = NULL;
1175                 return;
1176         }
1177
1178         if (bytesperpixel == 4)
1179         {
1180                 for (i = 0;i < 128;i++)
1181                 {
1182                         for (j = 0;j < 128;j++)
1183                         {
1184                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1185                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1186                         }
1187                 }
1188         }
1189         else
1190         {
1191                 // make an average value for the back to avoid
1192                 // a fringe on the top level
1193                 int p, r, g, b;
1194                 union
1195                 {
1196                         unsigned int i;
1197                         unsigned char b[4];
1198                 }
1199                 rgba;
1200                 r = g = b = 0;
1201                 for (i = 0;i < 128;i++)
1202                 {
1203                         for (j = 0;j < 128;j++)
1204                         {
1205                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1206                                 r += rgba.b[0];
1207                                 g += rgba.b[1];
1208                                 b += rgba.b[2];
1209                         }
1210                 }
1211                 rgba.b[0] = r/(128*128);
1212                 rgba.b[1] = g/(128*128);
1213                 rgba.b[2] = b/(128*128);
1214                 rgba.b[3] = 0;
1215                 for (i = 0;i < 128;i++)
1216                 {
1217                         for (j = 0;j < 128;j++)
1218                         {
1219                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1220                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1221                         }
1222                 }
1223         }
1224
1225         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1226         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1227 }
1228
1229 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1230 {
1231         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1232         miptex_t *dmiptex;
1233         texture_t *tx, *tx2, *anims[10], *altanims[10];
1234         dmiptexlump_t *m;
1235         unsigned char *data, *mtdata;
1236         char name[MAX_QPATH];
1237
1238         loadmodel->data_textures = NULL;
1239
1240         // add two slots for notexture walls and notexture liquids
1241         if (l->filelen)
1242         {
1243                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1244                 m->nummiptex = LittleLong (m->nummiptex);
1245                 loadmodel->num_textures = m->nummiptex + 2;
1246         }
1247         else
1248         {
1249                 m = NULL;
1250                 loadmodel->num_textures = 2;
1251         }
1252
1253         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1254
1255         // fill out all slots with notexture
1256         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1257         {
1258                 strcpy(tx->name, "NO TEXTURE FOUND");
1259                 tx->width = 16;
1260                 tx->height = 16;
1261                 tx->skin.base = r_texture_notexture;
1262                 tx->basematerialflags = 0;
1263                 if (i == loadmodel->num_textures - 1)
1264                 {
1265                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1266                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1267                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1268                 }
1269                 else
1270                 {
1271                         tx->basematerialflags |= MATERIALFLAG_WALL;
1272                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1273                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1274                 }
1275                 tx->currentframe = tx;
1276         }
1277
1278         if (!m)
1279                 return;
1280
1281         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1282         dofs = m->dataofs;
1283         // LordHavoc: mostly rewritten map texture loader
1284         for (i = 0;i < m->nummiptex;i++)
1285         {
1286                 dofs[i] = LittleLong(dofs[i]);
1287                 if (dofs[i] == -1 || r_nosurftextures.integer)
1288                         continue;
1289                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1290
1291                 // make sure name is no more than 15 characters
1292                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1293                         name[j] = dmiptex->name[j];
1294                 name[j] = 0;
1295
1296                 mtwidth = LittleLong(dmiptex->width);
1297                 mtheight = LittleLong(dmiptex->height);
1298                 mtdata = NULL;
1299                 j = LittleLong(dmiptex->offsets[0]);
1300                 if (j)
1301                 {
1302                         // texture included
1303                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1304                         {
1305                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1306                                 continue;
1307                         }
1308                         mtdata = (unsigned char *)dmiptex + j;
1309                 }
1310
1311                 if ((mtwidth & 15) || (mtheight & 15))
1312                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1313
1314                 // LordHavoc: force all names to lowercase
1315                 for (j = 0;name[j];j++)
1316                         if (name[j] >= 'A' && name[j] <= 'Z')
1317                                 name[j] += 'a' - 'A';
1318
1319                 tx = loadmodel->data_textures + i;
1320                 strcpy(tx->name, name);
1321                 tx->width = mtwidth;
1322                 tx->height = mtheight;
1323
1324                 if (!tx->name[0])
1325                 {
1326                         sprintf(tx->name, "unnamed%i", i);
1327                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1328                 }
1329
1330                 if (cls.state != ca_dedicated)
1331                 {
1332                         // LordHavoc: HL sky textures are entirely different than quake
1333                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1334                         {
1335                                 if (loadmodel->isworldmodel)
1336                                 {
1337                                         data = loadimagepixels(tx->name, false, 0, 0);
1338                                         if (data)
1339                                         {
1340                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1341                                                 Mem_Free(data);
1342                                         }
1343                                         else if (mtdata != NULL)
1344                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1345                                 }
1346                         }
1347                         else
1348                         {
1349                                 if (!Mod_LoadSkinFrame(&tx->skin, gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
1350                                 {
1351                                         // did not find external texture, load it from the bsp or wad3
1352                                         if (loadmodel->brush.ishlbsp)
1353                                         {
1354                                                 // internal texture overrides wad
1355                                                 unsigned char *pixels, *freepixels;
1356                                                 pixels = freepixels = NULL;
1357                                                 if (mtdata)
1358                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1359                                                 if (pixels == NULL)
1360                                                         pixels = freepixels = W_GetTexture(tx->name);
1361                                                 if (pixels != NULL)
1362                                                 {
1363                                                         tx->width = image_width;
1364                                                         tx->height = image_height;
1365                                                         Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, false, pixels, image_width, image_height, 32, NULL, NULL);
1366                                                 }
1367                                                 if (freepixels)
1368                                                         Mem_Free(freepixels);
1369                                         }
1370                                         else if (mtdata) // texture included
1371                                                 Mod_LoadSkinFrame_Internal(&tx->skin, tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1372                                 }
1373                         }
1374                         if (tx->skin.base == NULL)
1375                         {
1376                                 // no texture found
1377                                 tx->width = 16;
1378                                 tx->height = 16;
1379                                 tx->skin.base = r_texture_notexture;
1380                         }
1381                 }
1382
1383                 tx->basematerialflags = 0;
1384                 if (tx->name[0] == '*')
1385                 {
1386                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1387                         if (strncmp(tx->name,"*lava",5)
1388                          && strncmp(tx->name,"*teleport",9)
1389                          && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1390                                 tx->basematerialflags |= MATERIALFLAG_WATERALPHA;
1391                         if (!strncmp(tx->name, "*lava", 5))
1392                         {
1393                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1394                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1395                         }
1396                         else if (!strncmp(tx->name, "*slime", 6))
1397                         {
1398                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1399                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1400                         }
1401                         else
1402                         {
1403                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1404                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1405                         }
1406                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1407                 }
1408                 else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
1409                 {
1410                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1411                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1412                         tx->basematerialflags |= MATERIALFLAG_SKY;
1413                 }
1414                 else
1415                 {
1416                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1417                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1418                         tx->basematerialflags |= MATERIALFLAG_WALL;
1419                 }
1420                 if (tx->skin.fog)
1421                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
1422
1423                 // start out with no animation
1424                 tx->currentframe = tx;
1425         }
1426
1427         // sequence the animations
1428         for (i = 0;i < m->nummiptex;i++)
1429         {
1430                 tx = loadmodel->data_textures + i;
1431                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1432                         continue;
1433                 if (tx->anim_total[0] || tx->anim_total[1])
1434                         continue;       // already sequenced
1435
1436                 // find the number of frames in the animation
1437                 memset(anims, 0, sizeof(anims));
1438                 memset(altanims, 0, sizeof(altanims));
1439
1440                 for (j = i;j < m->nummiptex;j++)
1441                 {
1442                         tx2 = loadmodel->data_textures + j;
1443                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1444                                 continue;
1445
1446                         num = tx2->name[1];
1447                         if (num >= '0' && num <= '9')
1448                                 anims[num - '0'] = tx2;
1449                         else if (num >= 'a' && num <= 'j')
1450                                 altanims[num - 'a'] = tx2;
1451                         else
1452                                 Con_Printf("Bad animating texture %s\n", tx->name);
1453                 }
1454
1455                 max = altmax = 0;
1456                 for (j = 0;j < 10;j++)
1457                 {
1458                         if (anims[j])
1459                                 max = j + 1;
1460                         if (altanims[j])
1461                                 altmax = j + 1;
1462                 }
1463                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1464
1465                 incomplete = false;
1466                 for (j = 0;j < max;j++)
1467                 {
1468                         if (!anims[j])
1469                         {
1470                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1471                                 incomplete = true;
1472                         }
1473                 }
1474                 for (j = 0;j < altmax;j++)
1475                 {
1476                         if (!altanims[j])
1477                         {
1478                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1479                                 incomplete = true;
1480                         }
1481                 }
1482                 if (incomplete)
1483                         continue;
1484
1485                 if (altmax < 1)
1486                 {
1487                         // if there is no alternate animation, duplicate the primary
1488                         // animation into the alternate
1489                         altmax = max;
1490                         for (k = 0;k < 10;k++)
1491                                 altanims[k] = anims[k];
1492                 }
1493
1494                 // link together the primary animation
1495                 for (j = 0;j < max;j++)
1496                 {
1497                         tx2 = anims[j];
1498                         tx2->animated = true;
1499                         tx2->anim_total[0] = max;
1500                         tx2->anim_total[1] = altmax;
1501                         for (k = 0;k < 10;k++)
1502                         {
1503                                 tx2->anim_frames[0][k] = anims[k];
1504                                 tx2->anim_frames[1][k] = altanims[k];
1505                         }
1506                 }
1507
1508                 // if there really is an alternate anim...
1509                 if (anims[0] != altanims[0])
1510                 {
1511                         // link together the alternate animation
1512                         for (j = 0;j < altmax;j++)
1513                         {
1514                                 tx2 = altanims[j];
1515                                 tx2->animated = true;
1516                                 // the primary/alternate are reversed here
1517                                 tx2->anim_total[0] = altmax;
1518                                 tx2->anim_total[1] = max;
1519                                 for (k = 0;k < 10;k++)
1520                                 {
1521                                         tx2->anim_frames[0][k] = altanims[k];
1522                                         tx2->anim_frames[1][k] = anims[k];
1523                                 }
1524                         }
1525                 }
1526         }
1527 }
1528
1529 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1530 {
1531         int i;
1532         unsigned char *in, *out, *data, d;
1533         char litfilename[MAX_QPATH];
1534         char dlitfilename[MAX_QPATH];
1535         fs_offset_t filesize;
1536         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1537         {
1538                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1539                 for (i=0; i<l->filelen; i++)
1540                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1541         }
1542         else if (loadmodel->brush.ismcbsp)
1543         {
1544                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1545                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1546         }
1547         else // LordHavoc: bsp version 29 (normal white lighting)
1548         {
1549                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1550                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1551                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1552                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1553                 strlcat (litfilename, ".lit", sizeof (litfilename));
1554                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1555                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1556                 if (data)
1557                 {
1558                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1559                         {
1560                                 i = LittleLong(((int *)data)[1]);
1561                                 if (i == 1)
1562                                 {
1563                                         Con_DPrintf("loaded %s\n", litfilename);
1564                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1565                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1566                                         Mem_Free(data);
1567                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1568                                         if (data)
1569                                         {
1570                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1571                                                 {
1572                                                         i = LittleLong(((int *)data)[1]);
1573                                                         if (i == 1)
1574                                                         {
1575                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1576                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1577                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1578                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1579                                                                 loadmodel->brushq3.deluxemapping = true;
1580                                                         }
1581                                                 }
1582                                                 Mem_Free(data);
1583                                                 data = NULL;
1584                                         }
1585                                         return;
1586                                 }
1587                                 else
1588                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1589                         }
1590                         else if (filesize == 8)
1591                                 Con_Print("Empty .lit file, ignoring\n");
1592                         else
1593                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", filesize, 8 + l->filelen * 3);
1594                         if (data)
1595                         {
1596                                 Mem_Free(data);
1597                                 data = NULL;
1598                         }
1599                 }
1600                 // LordHavoc: oh well, expand the white lighting data
1601                 if (!l->filelen)
1602                         return;
1603                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1604                 in = mod_base + l->fileofs;
1605                 out = loadmodel->brushq1.lightdata;
1606                 for (i = 0;i < l->filelen;i++)
1607                 {
1608                         d = *in++;
1609                         *out++ = d;
1610                         *out++ = d;
1611                         *out++ = d;
1612                 }
1613         }
1614 }
1615
1616 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1617 {
1618         loadmodel->brushq1.num_compressedpvs = 0;
1619         loadmodel->brushq1.data_compressedpvs = NULL;
1620         if (!l->filelen)
1621                 return;
1622         loadmodel->brushq1.num_compressedpvs = l->filelen;
1623         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1624         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1625 }
1626
1627 // used only for HalfLife maps
1628 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1629 {
1630         char key[128], value[4096];
1631         char wadname[128];
1632         int i, j, k;
1633         if (!data)
1634                 return;
1635         if (!COM_ParseToken(&data, false))
1636                 return; // error
1637         if (com_token[0] != '{')
1638                 return; // error
1639         while (1)
1640         {
1641                 if (!COM_ParseToken(&data, false))
1642                         return; // error
1643                 if (com_token[0] == '}')
1644                         break; // end of worldspawn
1645                 if (com_token[0] == '_')
1646                         strcpy(key, com_token + 1);
1647                 else
1648                         strcpy(key, com_token);
1649                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1650                         key[strlen(key)-1] = 0;
1651                 if (!COM_ParseToken(&data, false))
1652                         return; // error
1653                 dpsnprintf(value, sizeof(value), "%s", com_token);
1654                 if (!strcmp("wad", key)) // for HalfLife maps
1655                 {
1656                         if (loadmodel->brush.ishlbsp)
1657                         {
1658                                 j = 0;
1659                                 for (i = 0;i < (int)sizeof(value);i++)
1660                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1661                                                 break;
1662                                 if (value[i])
1663                                 {
1664                                         for (;i < (int)sizeof(value);i++)
1665                                         {
1666                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1667                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1668                                                         j = i+1;
1669                                                 else if (value[i] == ';' || value[i] == 0)
1670                                                 {
1671                                                         k = value[i];
1672                                                         value[i] = 0;
1673                                                         strcpy(wadname, "textures/");
1674                                                         strcat(wadname, &value[j]);
1675                                                         W_LoadTextureWadFile(wadname, false);
1676                                                         j = i+1;
1677                                                         if (!k)
1678                                                                 break;
1679                                                 }
1680                                         }
1681                                 }
1682                         }
1683                 }
1684         }
1685 }
1686
1687 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1688 {
1689         loadmodel->brush.entities = NULL;
1690         if (!l->filelen)
1691                 return;
1692         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1693         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1694         if (loadmodel->brush.ishlbsp)
1695                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1696 }
1697
1698
1699 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1700 {
1701         dvertex_t       *in;
1702         mvertex_t       *out;
1703         int                     i, count;
1704
1705         in = (dvertex_t *)(mod_base + l->fileofs);
1706         if (l->filelen % sizeof(*in))
1707                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1708         count = l->filelen / sizeof(*in);
1709         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1710
1711         loadmodel->brushq1.vertexes = out;
1712         loadmodel->brushq1.numvertexes = count;
1713
1714         for ( i=0 ; i<count ; i++, in++, out++)
1715         {
1716                 out->position[0] = LittleFloat(in->point[0]);
1717                 out->position[1] = LittleFloat(in->point[1]);
1718                 out->position[2] = LittleFloat(in->point[2]);
1719         }
1720 }
1721
1722 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1723 // can be used for this
1724 // REMOVEME
1725 int SB_ReadInt (unsigned char **buffer)
1726 {
1727         int     i;
1728         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1729         (*buffer) += 4;
1730         return i;
1731 }
1732
1733 // REMOVEME
1734 float SB_ReadFloat (unsigned char **buffer)
1735 {
1736         union
1737         {
1738                 int             i;
1739                 float   f;
1740         } u;
1741
1742         u.i = SB_ReadInt (buffer);
1743         return u.f;
1744 }
1745
1746 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1747 {
1748         unsigned char           *index;
1749         dmodel_t        *out;
1750         int                     i, j, count;
1751
1752         index = (unsigned char *)(mod_base + l->fileofs);
1753         if (l->filelen % (48+4*hullinfo->filehulls))
1754                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1755
1756         count = l->filelen / (48+4*hullinfo->filehulls);
1757         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1758
1759         loadmodel->brushq1.submodels = out;
1760         loadmodel->brush.numsubmodels = count;
1761
1762         for (i = 0; i < count; i++, out++)
1763         {
1764         // spread out the mins / maxs by a pixel
1765                 out->mins[0] = SB_ReadFloat (&index) - 1;
1766                 out->mins[1] = SB_ReadFloat (&index) - 1;
1767                 out->mins[2] = SB_ReadFloat (&index) - 1;
1768                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1769                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1770                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1771                 out->origin[0] = SB_ReadFloat (&index);
1772                 out->origin[1] = SB_ReadFloat (&index);
1773                 out->origin[2] = SB_ReadFloat (&index);
1774                 for (j = 0; j < hullinfo->filehulls; j++)
1775                         out->headnode[j] = SB_ReadInt (&index);
1776                 out->visleafs = SB_ReadInt (&index);
1777                 out->firstface = SB_ReadInt (&index);
1778                 out->numfaces = SB_ReadInt (&index);
1779         }
1780 }
1781
1782 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1783 {
1784         dedge_t *in;
1785         medge_t *out;
1786         int     i, count;
1787
1788         in = (dedge_t *)(mod_base + l->fileofs);
1789         if (l->filelen % sizeof(*in))
1790                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1791         count = l->filelen / sizeof(*in);
1792         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1793
1794         loadmodel->brushq1.edges = out;
1795         loadmodel->brushq1.numedges = count;
1796
1797         for ( i=0 ; i<count ; i++, in++, out++)
1798         {
1799                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1800                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1801                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1802                 {
1803                         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);
1804                         out->v[0] = 0;
1805                         out->v[1] = 0;
1806                 }
1807         }
1808 }
1809
1810 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1811 {
1812         texinfo_t *in;
1813         mtexinfo_t *out;
1814         int i, j, k, count, miptex;
1815
1816         in = (texinfo_t *)(mod_base + l->fileofs);
1817         if (l->filelen % sizeof(*in))
1818                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1819         count = l->filelen / sizeof(*in);
1820         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1821
1822         loadmodel->brushq1.texinfo = out;
1823         loadmodel->brushq1.numtexinfo = count;
1824
1825         for (i = 0;i < count;i++, in++, out++)
1826         {
1827                 for (k = 0;k < 2;k++)
1828                         for (j = 0;j < 4;j++)
1829                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1830
1831                 miptex = LittleLong(in->miptex);
1832                 out->flags = LittleLong(in->flags);
1833
1834                 out->texture = NULL;
1835                 if (loadmodel->data_textures)
1836                 {
1837                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1838                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1839                         else
1840                                 out->texture = loadmodel->data_textures + miptex;
1841                 }
1842                 if (out->flags & TEX_SPECIAL)
1843                 {
1844                         // if texture chosen is NULL or the shader needs a lightmap,
1845                         // force to notexture water shader
1846                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1847                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1848                 }
1849                 else
1850                 {
1851                         // if texture chosen is NULL, force to notexture
1852                         if (out->texture == NULL)
1853                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1854                 }
1855         }
1856 }
1857
1858 #if 0
1859 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1860 {
1861         int             i, j;
1862         float   *v;
1863
1864         mins[0] = mins[1] = mins[2] = 9999;
1865         maxs[0] = maxs[1] = maxs[2] = -9999;
1866         v = verts;
1867         for (i = 0;i < numverts;i++)
1868         {
1869                 for (j = 0;j < 3;j++, v++)
1870                 {
1871                         if (*v < mins[j])
1872                                 mins[j] = *v;
1873                         if (*v > maxs[j])
1874                                 maxs[j] = *v;
1875                 }
1876         }
1877 }
1878
1879 #define MAX_SUBDIVPOLYTRIANGLES 4096
1880 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1881
1882 static int subdivpolyverts, subdivpolytriangles;
1883 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
1884 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
1885
1886 static int subdivpolylookupvert(vec3_t v)
1887 {
1888         int i;
1889         for (i = 0;i < subdivpolyverts;i++)
1890                 if (subdivpolyvert[i][0] == v[0]
1891                  && subdivpolyvert[i][1] == v[1]
1892                  && subdivpolyvert[i][2] == v[2])
1893                         return i;
1894         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
1895                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
1896         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
1897         return subdivpolyverts++;
1898 }
1899
1900 static void SubdividePolygon(int numverts, float *verts)
1901 {
1902         int             i, i1, i2, i3, f, b, c, p;
1903         vec3_t  mins, maxs, front[256], back[256];
1904         float   m, *pv, *cv, dist[256], frac;
1905
1906         if (numverts > 250)
1907                 Host_Error("SubdividePolygon: ran out of verts in buffer");
1908
1909         BoundPoly(numverts, verts, mins, maxs);
1910
1911         for (i = 0;i < 3;i++)
1912         {
1913                 m = (mins[i] + maxs[i]) * 0.5;
1914                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
1915                 if (maxs[i] - m < 8)
1916                         continue;
1917                 if (m - mins[i] < 8)
1918                         continue;
1919
1920                 // cut it
1921                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
1922                         dist[c] = cv[i] - m;
1923
1924                 f = b = 0;
1925                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
1926                 {
1927                         if (dist[p] >= 0)
1928                         {
1929                                 VectorCopy(pv, front[f]);
1930                                 f++;
1931                         }
1932                         if (dist[p] <= 0)
1933                         {
1934                                 VectorCopy(pv, back[b]);
1935                                 b++;
1936                         }
1937                         if (dist[p] == 0 || dist[c] == 0)
1938                                 continue;
1939                         if ((dist[p] > 0) != (dist[c] > 0) )
1940                         {
1941                                 // clip point
1942                                 frac = dist[p] / (dist[p] - dist[c]);
1943                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
1944                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
1945                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
1946                                 f++;
1947                                 b++;
1948                         }
1949                 }
1950
1951                 SubdividePolygon(f, front[0]);
1952                 SubdividePolygon(b, back[0]);
1953                 return;
1954         }
1955
1956         i1 = subdivpolylookupvert(verts);
1957         i2 = subdivpolylookupvert(verts + 3);
1958         for (i = 2;i < numverts;i++)
1959         {
1960                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
1961                 {
1962                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
1963                         return;
1964                 }
1965
1966                 i3 = subdivpolylookupvert(verts + i * 3);
1967                 subdivpolyindex[subdivpolytriangles][0] = i1;
1968                 subdivpolyindex[subdivpolytriangles][1] = i2;
1969                 subdivpolyindex[subdivpolytriangles][2] = i3;
1970                 i2 = i3;
1971                 subdivpolytriangles++;
1972         }
1973 }
1974
1975 //Breaks a polygon up along axial 64 unit
1976 //boundaries so that turbulent and sky warps
1977 //can be done reasonably.
1978 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
1979 {
1980         int i, j;
1981         surfvertex_t *v;
1982         surfmesh_t *mesh;
1983
1984         subdivpolytriangles = 0;
1985         subdivpolyverts = 0;
1986         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
1987         if (subdivpolytriangles < 1)
1988                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
1989
1990         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
1991         mesh->num_vertices = subdivpolyverts;
1992         mesh->num_triangles = subdivpolytriangles;
1993         mesh->vertex = (surfvertex_t *)(mesh + 1);
1994         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
1995         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
1996
1997         for (i = 0;i < mesh->num_triangles;i++)
1998                 for (j = 0;j < 3;j++)
1999                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2000
2001         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2002         {
2003                 VectorCopy(subdivpolyvert[i], v->v);
2004                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2005                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2006         }
2007 }
2008 #endif
2009
2010 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2011 {
2012         int y, x2, y2;
2013         int bestx = totalwidth, besty = 0;
2014         // find the left-most space we can find
2015         for (y = 0;y <= totalheight - blockheight;y++)
2016         {
2017                 x2 = 0;
2018                 for (y2 = 0;y2 < blockheight;y2++)
2019                         x2 = max(x2, lineused[y+y2]);
2020                 if (bestx > x2)
2021                 {
2022                         bestx = x2;
2023                         besty = y;
2024                 }
2025         }
2026         // if the best was not good enough, return failure
2027         if (bestx > totalwidth - blockwidth)
2028                 return false;
2029         // we found a good spot
2030         if (outx)
2031                 *outx = bestx;
2032         if (outy)
2033                 *outy = besty;
2034         // now mark the space used
2035         for (y2 = 0;y2 < blockheight;y2++)
2036                 lineused[besty+y2] = bestx + blockwidth;
2037         // return success
2038         return true;
2039 }
2040
2041 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2042 {
2043         dface_t *in;
2044         msurface_t *surface;
2045         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2046         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2047 #define LIGHTMAPSIZE 256
2048         rtexture_t *lightmaptexture, *deluxemaptexture;
2049         int lightmap_lineused[LIGHTMAPSIZE];
2050
2051         in = (dface_t *)(mod_base + l->fileofs);
2052         if (l->filelen % sizeof(*in))
2053                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2054         count = l->filelen / sizeof(*in);
2055         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2056         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2057
2058         loadmodel->num_surfaces = count;
2059
2060         totalverts = 0;
2061         totaltris = 0;
2062         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2063         {
2064                 numedges = LittleShort(in->numedges);
2065                 totalverts += numedges;
2066                 totaltris += numedges - 2;
2067         }
2068
2069         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2070
2071         lightmaptexture = NULL;
2072         deluxemaptexture = r_texture_blanknormalmap;
2073         lightmapnumber = 1;
2074         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2075
2076         totalverts = 0;
2077         totaltris = 0;
2078         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2079         {
2080                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2081
2082                 // FIXME: validate edges, texinfo, etc?
2083                 firstedge = LittleLong(in->firstedge);
2084                 numedges = LittleShort(in->numedges);
2085                 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)
2086                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2087                 i = LittleShort(in->texinfo);
2088                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2089                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2090                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2091                 surface->texture = surface->lightmapinfo->texinfo->texture;
2092
2093                 planenum = LittleShort(in->planenum);
2094                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2095                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2096
2097                 //surface->flags = surface->texture->flags;
2098                 //if (LittleShort(in->side))
2099                 //      surface->flags |= SURF_PLANEBACK;
2100                 //surface->plane = loadmodel->brush.data_planes + planenum;
2101
2102                 surface->num_firstvertex = totalverts;
2103                 surface->num_vertices = numedges;
2104                 surface->num_firsttriangle = totaltris;
2105                 surface->num_triangles = numedges - 2;
2106                 totalverts += numedges;
2107                 totaltris += numedges - 2;
2108
2109                 // convert edges back to a normal polygon
2110                 for (i = 0;i < surface->num_vertices;i++)
2111                 {
2112                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2113                         float s, t;
2114                         if (lindex > 0)
2115                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2116                         else
2117                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2118                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2119                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2120                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2121                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2122                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2123                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2124                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2125                 }
2126
2127                 for (i = 0;i < surface->num_triangles;i++)
2128                 {
2129                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2130                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2131                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2132                 }
2133
2134                 // compile additional data about the surface geometry
2135                 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);
2136                 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);
2137                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2138
2139                 // generate surface extents information
2140                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2141                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2142                 for (i = 1;i < surface->num_vertices;i++)
2143                 {
2144                         for (j = 0;j < 2;j++)
2145                         {
2146                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2147                                 texmins[j] = min(texmins[j], val);
2148                                 texmaxs[j] = max(texmaxs[j], val);
2149                         }
2150                 }
2151                 for (i = 0;i < 2;i++)
2152                 {
2153                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2154                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2155                 }
2156
2157                 smax = surface->lightmapinfo->extents[0] >> 4;
2158                 tmax = surface->lightmapinfo->extents[1] >> 4;
2159                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2160                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2161
2162                 // lighting info
2163                 for (i = 0;i < MAXLIGHTMAPS;i++)
2164                         surface->lightmapinfo->styles[i] = in->styles[i];
2165                 surface->lightmaptexture = NULL;
2166                 surface->deluxemaptexture = r_texture_blanknormalmap;
2167                 i = LittleLong(in->lightofs);
2168                 if (i == -1)
2169                 {
2170                         surface->lightmapinfo->samples = NULL;
2171                         // give non-lightmapped water a 1x white lightmap
2172                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2173                         {
2174                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2175                                 surface->lightmapinfo->styles[0] = 0;
2176                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2177                         }
2178                 }
2179                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2180                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2181                 else // LordHavoc: white lighting (bsp version 29)
2182                 {
2183                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2184                         if (loadmodel->brushq1.nmaplightdata)
2185                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2186                 }
2187
2188                 // check if we should apply a lightmap to this
2189                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2190                 {
2191                         int i, iu, iv, lightmapx, lightmapy;
2192                         float u, v, ubase, vbase, uscale, vscale;
2193
2194                         if (ssize > 256 || tsize > 256)
2195                                 Host_Error("Bad surface extents");
2196                         // force lightmap upload on first time seeing the surface
2197                         surface->cached_dlight = true;
2198                         // stainmap for permanent marks on walls
2199                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2200                         // clear to white
2201                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2202
2203                         // find a place for this lightmap
2204                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2205                         {
2206                                 // could not find room, make a new lightmap
2207                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2208                                 if (loadmodel->brushq1.nmaplightdata)
2209                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2210                                 lightmapnumber++;
2211                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2212                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2213                         }
2214
2215                         surface->lightmaptexture = lightmaptexture;
2216                         surface->deluxemaptexture = deluxemaptexture;
2217                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2218                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2219
2220                         ubase = lightmapx * lightmaptexcoordscale;
2221                         vbase = lightmapy * lightmaptexcoordscale;
2222                         uscale = lightmaptexcoordscale;
2223                         vscale = lightmaptexcoordscale;
2224
2225                         for (i = 0;i < surface->num_vertices;i++)
2226                         {
2227                                 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);
2228                                 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);
2229                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2230                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2231                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2232                                 iu = (int) u;
2233                                 iv = (int) v;
2234                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2235                         }
2236                 }
2237         }
2238 }
2239
2240 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2241 {
2242         //if (node->parent)
2243         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2244         node->parent = parent;
2245         if (node->plane)
2246         {
2247                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2248                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2249         }
2250 }
2251
2252 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2253 {
2254         int                     i, j, count, p;
2255         dnode_t         *in;
2256         mnode_t         *out;
2257
2258         in = (dnode_t *)(mod_base + l->fileofs);
2259         if (l->filelen % sizeof(*in))
2260                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2261         count = l->filelen / sizeof(*in);
2262         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2263
2264         loadmodel->brush.data_nodes = out;
2265         loadmodel->brush.num_nodes = count;
2266
2267         for ( i=0 ; i<count ; i++, in++, out++)
2268         {
2269                 for (j=0 ; j<3 ; j++)
2270                 {
2271                         out->mins[j] = LittleShort(in->mins[j]);
2272                         out->maxs[j] = LittleShort(in->maxs[j]);
2273                 }
2274
2275                 p = LittleLong(in->planenum);
2276                 out->plane = loadmodel->brush.data_planes + p;
2277
2278                 out->firstsurface = LittleShort(in->firstface);
2279                 out->numsurfaces = LittleShort(in->numfaces);
2280
2281                 for (j=0 ; j<2 ; j++)
2282                 {
2283                         p = LittleShort(in->children[j]);
2284                         if (p >= 0)
2285                                 out->children[j] = loadmodel->brush.data_nodes + p;
2286                         else
2287                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2288                 }
2289         }
2290
2291         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2292 }
2293
2294 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2295 {
2296         dleaf_t *in;
2297         mleaf_t *out;
2298         int i, j, count, p;
2299
2300         in = (dleaf_t *)(mod_base + l->fileofs);
2301         if (l->filelen % sizeof(*in))
2302                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2303         count = l->filelen / sizeof(*in);
2304         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2305
2306         loadmodel->brush.data_leafs = out;
2307         loadmodel->brush.num_leafs = count;
2308         // get visleafs from the submodel data
2309         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2310         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2311         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2312         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2313
2314         for ( i=0 ; i<count ; i++, in++, out++)
2315         {
2316                 for (j=0 ; j<3 ; j++)
2317                 {
2318                         out->mins[j] = LittleShort(in->mins[j]);
2319                         out->maxs[j] = LittleShort(in->maxs[j]);
2320                 }
2321
2322                 // FIXME: this function could really benefit from some error checking
2323
2324                 out->contents = LittleLong(in->contents);
2325
2326                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2327                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2328                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2329                 {
2330                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", out->firstleafsurface, out->firstleafsurface + out->numleafsurfaces, 0, loadmodel->brush.num_leafsurfaces);
2331                         out->firstleafsurface = NULL;
2332                         out->numleafsurfaces = 0;
2333                 }
2334
2335                 out->clusterindex = i - 1;
2336                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2337                         out->clusterindex = -1;
2338
2339                 p = LittleLong(in->visofs);
2340                 // ignore visofs errors on leaf 0 (solid)
2341                 if (p >= 0 && out->clusterindex >= 0)
2342                 {
2343                         if (p >= loadmodel->brushq1.num_compressedpvs)
2344                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2345                         else
2346                                 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);
2347                 }
2348
2349                 for (j = 0;j < 4;j++)
2350                         out->ambient_sound_level[j] = in->ambient_level[j];
2351
2352                 // FIXME: Insert caustics here
2353         }
2354 }
2355
2356 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2357 {
2358         dclipnode_t *in, *out;
2359         int                     i, count;
2360         hull_t          *hull;
2361
2362         in = (dclipnode_t *)(mod_base + l->fileofs);
2363         if (l->filelen % sizeof(*in))
2364                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2365         count = l->filelen / sizeof(*in);
2366         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2367
2368         loadmodel->brushq1.clipnodes = out;
2369         loadmodel->brushq1.numclipnodes = count;
2370
2371         for (i = 1; i < hullinfo->numhulls; i++)
2372         {
2373                 hull = &loadmodel->brushq1.hulls[i];
2374                 hull->clipnodes = out;
2375                 hull->firstclipnode = 0;
2376                 hull->lastclipnode = count-1;
2377                 hull->planes = loadmodel->brush.data_planes;
2378                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2379                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2380                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2381                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2382                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2383                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2384                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2385         }
2386
2387         for (i=0 ; i<count ; i++, out++, in++)
2388         {
2389                 out->planenum = LittleLong(in->planenum);
2390                 out->children[0] = LittleShort(in->children[0]);
2391                 out->children[1] = LittleShort(in->children[1]);
2392                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2393                         Host_Error("Corrupt clipping hull(out of range planenum)");
2394                 if (out->children[0] >= count || out->children[1] >= count)
2395                         Host_Error("Corrupt clipping hull(out of range child)");
2396         }
2397 }
2398
2399 //Duplicate the drawing hull structure as a clipping hull
2400 static void Mod_Q1BSP_MakeHull0(void)
2401 {
2402         mnode_t         *in;
2403         dclipnode_t *out;
2404         int                     i;
2405         hull_t          *hull;
2406
2407         hull = &loadmodel->brushq1.hulls[0];
2408
2409         in = loadmodel->brush.data_nodes;
2410         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2411
2412         hull->clipnodes = out;
2413         hull->firstclipnode = 0;
2414         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2415         hull->planes = loadmodel->brush.data_planes;
2416
2417         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2418         {
2419                 out->planenum = in->plane - loadmodel->brush.data_planes;
2420                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2421                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2422         }
2423 }
2424
2425 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2426 {
2427         int i, j;
2428         short *in;
2429
2430         in = (short *)(mod_base + l->fileofs);
2431         if (l->filelen % sizeof(*in))
2432                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2433         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2434         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2435
2436         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2437         {
2438                 j = (unsigned) LittleShort(in[i]);
2439                 if (j >= loadmodel->num_surfaces)
2440                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2441                 loadmodel->brush.data_leafsurfaces[i] = j;
2442         }
2443 }
2444
2445 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2446 {
2447         int             i;
2448         int             *in;
2449
2450         in = (int *)(mod_base + l->fileofs);
2451         if (l->filelen % sizeof(*in))
2452                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2453         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2454         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2455
2456         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2457                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2458 }
2459
2460
2461 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2462 {
2463         int                     i;
2464         mplane_t        *out;
2465         dplane_t        *in;
2466
2467         in = (dplane_t *)(mod_base + l->fileofs);
2468         if (l->filelen % sizeof(*in))
2469                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2470
2471         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2472         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2473
2474         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2475         {
2476                 out->normal[0] = LittleFloat(in->normal[0]);
2477                 out->normal[1] = LittleFloat(in->normal[1]);
2478                 out->normal[2] = LittleFloat(in->normal[2]);
2479                 out->dist = LittleFloat(in->dist);
2480
2481                 PlaneClassify(out);
2482         }
2483 }
2484
2485 static void Mod_Q1BSP_LoadMapBrushes(void)
2486 {
2487 #if 0
2488 // unfinished
2489         int submodel, numbrushes;
2490         qboolean firstbrush;
2491         char *text, *maptext;
2492         char mapfilename[MAX_QPATH];
2493         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2494         strlcat (mapfilename, ".map", sizeof (mapfilename));
2495         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2496         if (!maptext)
2497                 return;
2498         text = maptext;
2499         if (!COM_ParseToken(&data, false))
2500                 return; // error
2501         submodel = 0;
2502         for (;;)
2503         {
2504                 if (!COM_ParseToken(&data, false))
2505                         break;
2506                 if (com_token[0] != '{')
2507                         return; // error
2508                 // entity
2509                 firstbrush = true;
2510                 numbrushes = 0;
2511                 maxbrushes = 256;
2512                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2513                 for (;;)
2514                 {
2515                         if (!COM_ParseToken(&data, false))
2516                                 return; // error
2517                         if (com_token[0] == '}')
2518                                 break; // end of entity
2519                         if (com_token[0] == '{')
2520                         {
2521                                 // brush
2522                                 if (firstbrush)
2523                                 {
2524                                         if (submodel)
2525                                         {
2526                                                 if (submodel > loadmodel->brush.numsubmodels)
2527                                                 {
2528                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2529                                                         model = NULL;
2530                                                 }
2531                                                 else
2532                                                         model = loadmodel->brush.submodels[submodel];
2533                                         }
2534                                         else
2535                                                 model = loadmodel;
2536                                 }
2537                                 for (;;)
2538                                 {
2539                                         if (!COM_ParseToken(&data, false))
2540                                                 return; // error
2541                                         if (com_token[0] == '}')
2542                                                 break; // end of brush
2543                                         // each brush face should be this format:
2544                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2545                                         // FIXME: support hl .map format
2546                                         for (pointnum = 0;pointnum < 3;pointnum++)
2547                                         {
2548                                                 COM_ParseToken(&data, false);
2549                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2550                                                 {
2551                                                         COM_ParseToken(&data, false);
2552                                                         point[pointnum][componentnum] = atof(com_token);
2553                                                 }
2554                                                 COM_ParseToken(&data, false);
2555                                         }
2556                                         COM_ParseToken(&data, false);
2557                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2558                                         COM_ParseToken(&data, false);
2559                                         //scroll_s = atof(com_token);
2560                                         COM_ParseToken(&data, false);
2561                                         //scroll_t = atof(com_token);
2562                                         COM_ParseToken(&data, false);
2563                                         //rotate = atof(com_token);
2564                                         COM_ParseToken(&data, false);
2565                                         //scale_s = atof(com_token);
2566                                         COM_ParseToken(&data, false);
2567                                         //scale_t = atof(com_token);
2568                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2569                                         VectorNormalizeDouble(planenormal);
2570                                         planedist = DotProduct(point[0], planenormal);
2571                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2572                                 }
2573                                 continue;
2574                         }
2575                 }
2576         }
2577 #endif
2578 }
2579
2580
2581 #define MAX_PORTALPOINTS 64
2582
2583 typedef struct portal_s
2584 {
2585         mplane_t plane;
2586         mnode_t *nodes[2];              // [0] = front side of plane
2587         struct portal_s *next[2];
2588         int numpoints;
2589         double points[3*MAX_PORTALPOINTS];
2590         struct portal_s *chain; // all portals are linked into a list
2591 }
2592 portal_t;
2593
2594 static portal_t *portalchain;
2595
2596 /*
2597 ===========
2598 AllocPortal
2599 ===========
2600 */
2601 static portal_t *AllocPortal(void)
2602 {
2603         portal_t *p;
2604         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2605         p->chain = portalchain;
2606         portalchain = p;
2607         return p;
2608 }
2609
2610 static void FreePortal(portal_t *p)
2611 {
2612         Mem_Free(p);
2613 }
2614
2615 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2616 {
2617         // process only nodes (leafs already had their box calculated)
2618         if (!node->plane)
2619                 return;
2620
2621         // calculate children first
2622         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2623         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2624
2625         // make combined bounding box from children
2626         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2627         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2628         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2629         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2630         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2631         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2632 }
2633
2634 static void Mod_Q1BSP_FinalizePortals(void)
2635 {
2636         int i, j, numportals, numpoints;
2637         portal_t *p, *pnext;
2638         mportal_t *portal;
2639         mvertex_t *point;
2640         mleaf_t *leaf, *endleaf;
2641
2642         // tally up portal and point counts and recalculate bounding boxes for all
2643         // leafs (because qbsp is very sloppy)
2644         leaf = loadmodel->brush.data_leafs;
2645         endleaf = leaf + loadmodel->brush.num_leafs;
2646         for (;leaf < endleaf;leaf++)
2647         {
2648                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2649                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2650         }
2651         p = portalchain;
2652         numportals = 0;
2653         numpoints = 0;
2654         while (p)
2655         {
2656                 // note: this check must match the one below or it will usually corrupt memory
2657                 // 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
2658                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2659                 {
2660                         numportals += 2;
2661                         numpoints += p->numpoints * 2;
2662                 }
2663                 p = p->chain;
2664         }
2665         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2666         loadmodel->brush.num_portals = numportals;
2667         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2668         loadmodel->brush.num_portalpoints = numpoints;
2669         // clear all leaf portal chains
2670         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2671                 loadmodel->brush.data_leafs[i].portals = NULL;
2672         // process all portals in the global portal chain, while freeing them
2673         portal = loadmodel->brush.data_portals;
2674         point = loadmodel->brush.data_portalpoints;
2675         p = portalchain;
2676         portalchain = NULL;
2677         while (p)
2678         {
2679                 pnext = p->chain;
2680
2681                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2682                 {
2683                         // note: this check must match the one above or it will usually corrupt memory
2684                         // 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
2685                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2686                         {
2687                                 // first make the back to front portal(forward portal)
2688                                 portal->points = point;
2689                                 portal->numpoints = p->numpoints;
2690                                 portal->plane.dist = p->plane.dist;
2691                                 VectorCopy(p->plane.normal, portal->plane.normal);
2692                                 portal->here = (mleaf_t *)p->nodes[1];
2693                                 portal->past = (mleaf_t *)p->nodes[0];
2694                                 // copy points
2695                                 for (j = 0;j < portal->numpoints;j++)
2696                                 {
2697                                         VectorCopy(p->points + j*3, point->position);
2698                                         point++;
2699                                 }
2700                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2701                                 PlaneClassify(&portal->plane);
2702
2703                                 // link into leaf's portal chain
2704                                 portal->next = portal->here->portals;
2705                                 portal->here->portals = portal;
2706
2707                                 // advance to next portal
2708                                 portal++;
2709
2710                                 // then make the front to back portal(backward portal)
2711                                 portal->points = point;
2712                                 portal->numpoints = p->numpoints;
2713                                 portal->plane.dist = -p->plane.dist;
2714                                 VectorNegate(p->plane.normal, portal->plane.normal);
2715                                 portal->here = (mleaf_t *)p->nodes[0];
2716                                 portal->past = (mleaf_t *)p->nodes[1];
2717                                 // copy points
2718                                 for (j = portal->numpoints - 1;j >= 0;j--)
2719                                 {
2720                                         VectorCopy(p->points + j*3, point->position);
2721                                         point++;
2722                                 }
2723                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2724                                 PlaneClassify(&portal->plane);
2725
2726                                 // link into leaf's portal chain
2727                                 portal->next = portal->here->portals;
2728                                 portal->here->portals = portal;
2729
2730                                 // advance to next portal
2731                                 portal++;
2732                         }
2733                         // add the portal's polygon points to the leaf bounding boxes
2734                         for (i = 0;i < 2;i++)
2735                         {
2736                                 leaf = (mleaf_t *)p->nodes[i];
2737                                 for (j = 0;j < p->numpoints;j++)
2738                                 {
2739                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2740                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2741                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2742                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2743                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2744                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2745                                 }
2746                         }
2747                 }
2748                 FreePortal(p);
2749                 p = pnext;
2750         }
2751         // now recalculate the node bounding boxes from the leafs
2752         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2753 }
2754
2755 /*
2756 =============
2757 AddPortalToNodes
2758 =============
2759 */
2760 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2761 {
2762         if (!front)
2763                 Host_Error("AddPortalToNodes: NULL front node");
2764         if (!back)
2765                 Host_Error("AddPortalToNodes: NULL back node");
2766         if (p->nodes[0] || p->nodes[1])
2767                 Host_Error("AddPortalToNodes: already included");
2768         // 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
2769
2770         p->nodes[0] = front;
2771         p->next[0] = (portal_t *)front->portals;
2772         front->portals = (mportal_t *)p;
2773
2774         p->nodes[1] = back;
2775         p->next[1] = (portal_t *)back->portals;
2776         back->portals = (mportal_t *)p;
2777 }
2778
2779 /*
2780 =============
2781 RemovePortalFromNode
2782 =============
2783 */
2784 static void RemovePortalFromNodes(portal_t *portal)
2785 {
2786         int i;
2787         mnode_t *node;
2788         void **portalpointer;
2789         portal_t *t;
2790         for (i = 0;i < 2;i++)
2791         {
2792                 node = portal->nodes[i];
2793
2794                 portalpointer = (void **) &node->portals;
2795                 while (1)
2796                 {
2797                         t = (portal_t *)*portalpointer;
2798                         if (!t)
2799                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2800
2801                         if (t == portal)
2802                         {
2803                                 if (portal->nodes[0] == node)
2804                                 {
2805                                         *portalpointer = portal->next[0];
2806                                         portal->nodes[0] = NULL;
2807                                 }
2808                                 else if (portal->nodes[1] == node)
2809                                 {
2810                                         *portalpointer = portal->next[1];
2811                                         portal->nodes[1] = NULL;
2812                                 }
2813                                 else
2814                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2815                                 break;
2816                         }
2817
2818                         if (t->nodes[0] == node)
2819                                 portalpointer = (void **) &t->next[0];
2820                         else if (t->nodes[1] == node)
2821                                 portalpointer = (void **) &t->next[1];
2822                         else
2823                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2824                 }
2825         }
2826 }
2827
2828 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2829 {
2830         int i, side;
2831         mnode_t *front, *back, *other_node;
2832         mplane_t clipplane, *plane;
2833         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2834         int numfrontpoints, numbackpoints;
2835         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2836
2837         // if a leaf, we're done
2838         if (!node->plane)
2839                 return;
2840
2841         plane = node->plane;
2842
2843         front = node->children[0];
2844         back = node->children[1];
2845         if (front == back)
2846                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2847
2848         // create the new portal by generating a polygon for the node plane,
2849         // and clipping it by all of the other portals(which came from nodes above this one)
2850         nodeportal = AllocPortal();
2851         nodeportal->plane = *plane;
2852
2853         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);
2854         nodeportal->numpoints = 4;
2855         side = 0;       // shut up compiler warning
2856         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
2857         {
2858                 clipplane = portal->plane;
2859                 if (portal->nodes[0] == portal->nodes[1])
2860                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
2861                 if (portal->nodes[0] == node)
2862                         side = 0;
2863                 else if (portal->nodes[1] == node)
2864                 {
2865                         clipplane.dist = -clipplane.dist;
2866                         VectorNegate(clipplane.normal, clipplane.normal);
2867                         side = 1;
2868                 }
2869                 else
2870                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2871
2872                 for (i = 0;i < nodeportal->numpoints*3;i++)
2873                         frontpoints[i] = nodeportal->points[i];
2874                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, 1.0/32.0, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
2875                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
2876                         break;
2877         }
2878
2879         if (nodeportal->numpoints < 3)
2880         {
2881                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
2882                 nodeportal->numpoints = 0;
2883         }
2884         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
2885         {
2886                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
2887                 nodeportal->numpoints = 0;
2888         }
2889
2890         AddPortalToNodes(nodeportal, front, back);
2891
2892         // split the portals of this node along this node's plane and assign them to the children of this node
2893         // (migrating the portals downward through the tree)
2894         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
2895         {
2896                 if (portal->nodes[0] == portal->nodes[1])
2897                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
2898                 if (portal->nodes[0] == node)
2899                         side = 0;
2900                 else if (portal->nodes[1] == node)
2901                         side = 1;
2902                 else
2903                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2904                 nextportal = portal->next[side];
2905                 if (!portal->numpoints)
2906                         continue;
2907
2908                 other_node = portal->nodes[!side];
2909                 RemovePortalFromNodes(portal);
2910
2911                 // cut the portal into two portals, one on each side of the node plane
2912                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, 1.0/32.0, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
2913
2914                 if (!numfrontpoints)
2915                 {
2916                         if (side == 0)
2917                                 AddPortalToNodes(portal, back, other_node);
2918                         else
2919                                 AddPortalToNodes(portal, other_node, back);
2920                         continue;
2921                 }
2922                 if (!numbackpoints)
2923                 {
2924                         if (side == 0)
2925                                 AddPortalToNodes(portal, front, other_node);
2926                         else
2927                                 AddPortalToNodes(portal, other_node, front);
2928                         continue;
2929                 }
2930
2931                 // the portal is split
2932                 splitportal = AllocPortal();
2933                 temp = splitportal->chain;
2934                 *splitportal = *portal;
2935                 splitportal->chain = temp;
2936                 for (i = 0;i < numbackpoints*3;i++)
2937                         splitportal->points[i] = backpoints[i];
2938                 splitportal->numpoints = numbackpoints;
2939                 for (i = 0;i < numfrontpoints*3;i++)
2940                         portal->points[i] = frontpoints[i];
2941                 portal->numpoints = numfrontpoints;
2942
2943                 if (side == 0)
2944                 {
2945                         AddPortalToNodes(portal, front, other_node);
2946                         AddPortalToNodes(splitportal, back, other_node);
2947                 }
2948                 else
2949                 {
2950                         AddPortalToNodes(portal, other_node, front);
2951                         AddPortalToNodes(splitportal, other_node, back);
2952                 }
2953         }
2954
2955         Mod_Q1BSP_RecursiveNodePortals(front);
2956         Mod_Q1BSP_RecursiveNodePortals(back);
2957 }
2958
2959 static void Mod_Q1BSP_MakePortals(void)
2960 {
2961         portalchain = NULL;
2962         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
2963         Mod_Q1BSP_FinalizePortals();
2964 }
2965
2966 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
2967 {
2968         int i, j, stylecounts[256], totalcount, remapstyles[256];
2969         msurface_t *surface;
2970         memset(stylecounts, 0, sizeof(stylecounts));
2971         for (i = 0;i < model->nummodelsurfaces;i++)
2972         {
2973                 surface = model->data_surfaces + model->firstmodelsurface + i;
2974                 for (j = 0;j < MAXLIGHTMAPS;j++)
2975                         stylecounts[surface->lightmapinfo->styles[j]]++;
2976         }
2977         totalcount = 0;
2978         model->brushq1.light_styles = 0;
2979         for (i = 0;i < 255;i++)
2980         {
2981                 if (stylecounts[i])
2982                 {
2983                         remapstyles[i] = model->brushq1.light_styles++;
2984                         totalcount += stylecounts[i] + 1;
2985                 }
2986         }
2987         if (!totalcount)
2988                 return;
2989         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
2990         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
2991         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
2992         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
2993         model->brushq1.light_styles = 0;
2994         for (i = 0;i < 255;i++)
2995                 if (stylecounts[i])
2996                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
2997         j = 0;
2998         for (i = 0;i < model->brushq1.light_styles;i++)
2999         {
3000                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3001                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3002         }
3003         for (i = 0;i < model->nummodelsurfaces;i++)
3004         {
3005                 surface = model->data_surfaces + model->firstmodelsurface + i;
3006                 for (j = 0;j < MAXLIGHTMAPS;j++)
3007                         if (surface->lightmapinfo->styles[j] != 255)
3008                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3009         }
3010         j = 0;
3011         for (i = 0;i < model->brushq1.light_styles;i++)
3012         {
3013                 *model->brushq1.light_styleupdatechains[i] = NULL;
3014                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3015                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3016         }
3017 }
3018
3019 //Returns PVS data for a given point
3020 //(note: can return NULL)
3021 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3022 {
3023         mnode_t *node;
3024         node = model->brush.data_nodes;
3025         while (node->plane)
3026                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3027         if (((mleaf_t *)node)->clusterindex >= 0)
3028                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3029         else
3030                 return NULL;
3031 }
3032
3033 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3034 {
3035         while (node->plane)
3036         {
3037                 float d = PlaneDiff(org, node->plane);
3038                 if (d > radius)
3039                         node = node->children[0];
3040                 else if (d < -radius)
3041                         node = node->children[1];
3042                 else
3043                 {
3044                         // go down both sides
3045                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3046                         node = node->children[1];
3047                 }
3048         }
3049         // if this leaf is in a cluster, accumulate the pvs bits
3050         if (((mleaf_t *)node)->clusterindex >= 0)
3051         {
3052                 int i;
3053                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3054                 for (i = 0;i < pvsbytes;i++)
3055                         pvsbuffer[i] |= pvs[i];
3056         }
3057 }
3058
3059 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3060 //of the given point.
3061 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3062 {
3063         int bytes = model->brush.num_pvsclusterbytes;
3064         bytes = min(bytes, pvsbufferlength);
3065         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3066         {
3067                 memset(pvsbuffer, 0xFF, bytes);
3068                 return bytes;
3069         }
3070         memset(pvsbuffer, 0, bytes);
3071         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3072         return bytes;
3073 }
3074
3075 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3076 {
3077         vec3_t size;
3078         const hull_t *hull;
3079
3080         VectorSubtract(inmaxs, inmins, size);
3081         if (cmodel->brush.ismcbsp)
3082         {
3083                 if (size[0] < 3)
3084                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3085                 else if (size[2] < 48) // pick the nearest of 40 or 56
3086                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3087                 else
3088                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3089         }
3090         else if (cmodel->brush.ishlbsp)
3091         {
3092                 if (size[0] < 3)
3093                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3094                 else if (size[0] <= 32)
3095                 {
3096                         if (size[2] < 54) // pick the nearest of 36 or 72
3097                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3098                         else
3099                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3100                 }
3101                 else
3102                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3103         }
3104         else
3105         {
3106                 if (size[0] < 3)
3107                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3108                 else if (size[0] <= 32)
3109                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3110                 else
3111                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3112         }
3113         VectorCopy(inmins, outmins);
3114         VectorAdd(inmins, hull->clip_size, outmaxs);
3115 }
3116
3117 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3118 {
3119         int i, j, k;
3120         dheader_t *header;
3121         dmodel_t *bm;
3122         mempool_t *mainmempool;
3123         float dist, modelyawradius, modelradius, *vec;
3124         msurface_t *surface;
3125         int numshadowmeshtriangles;
3126         dheader_t _header;
3127         hullinfo_t hullinfo;
3128
3129         mod->type = mod_brushq1;
3130
3131         if (!memcmp (buffer, "MCBSPpad", 8))
3132         {
3133                 unsigned char   *index;
3134
3135                 mod->brush.ismcbsp = true;
3136                 mod->brush.ishlbsp = false;
3137
3138                 mod_base = (unsigned char*)buffer;
3139
3140                 index = mod_base;
3141                 index += 8;
3142                 i = SB_ReadInt (&index);
3143                 if (i != MCBSPVERSION)
3144                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3145
3146         // read hull info
3147                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3148                 hullinfo.filehulls = hullinfo.numhulls;
3149                 VectorClear (hullinfo.hullsizes[0][0]);
3150                 VectorClear (hullinfo.hullsizes[0][1]);
3151                 for (i = 1; i < hullinfo.numhulls; i++)
3152                 {
3153                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3154                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3155                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3156                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3157                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3158                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3159                 }
3160
3161         // read lumps
3162                 _header.version = 0;
3163                 for (i = 0; i < HEADER_LUMPS; i++)
3164                 {
3165                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3166                         _header.lumps[i].filelen = SB_ReadInt (&index);
3167                 }
3168
3169                 header = &_header;
3170         }
3171         else
3172         {
3173                 header = (dheader_t *)buffer;
3174
3175                 i = LittleLong(header->version);
3176                 if (i != BSPVERSION && i != 30)
3177                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3178                 mod->brush.ishlbsp = i == 30;
3179                 mod->brush.ismcbsp = false;
3180
3181         // fill in hull info
3182                 VectorClear (hullinfo.hullsizes[0][0]);
3183                 VectorClear (hullinfo.hullsizes[0][1]);
3184                 if (mod->brush.ishlbsp)
3185                 {
3186                         hullinfo.numhulls = 4;
3187                         hullinfo.filehulls = 4;
3188                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3189                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3190                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3191                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3192                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3193                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3194                 }
3195                 else
3196                 {
3197                         hullinfo.numhulls = 3;
3198                         hullinfo.filehulls = 4;
3199                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3200                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3201                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3202                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3203                 }
3204
3205         // read lumps
3206                 mod_base = (unsigned char*)buffer;
3207                 for (i = 0; i < HEADER_LUMPS; i++)
3208                 {
3209                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3210                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3211                 }
3212         }
3213
3214         mod->soundfromcenter = true;
3215         mod->TraceBox = Mod_Q1BSP_TraceBox;
3216         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3217         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3218         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3219         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3220         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3221         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3222         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3223         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3224         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3225         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3226         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3227         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3228         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3229
3230         if (loadmodel->isworldmodel)
3231         {
3232                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3233                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3234         }
3235
3236 // load into heap
3237
3238         // store which lightmap format to use
3239         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3240
3241         mod->brush.qw_md4sum = 0;
3242         mod->brush.qw_md4sum2 = 0;
3243         for (i = 0;i < HEADER_LUMPS;i++)
3244         {
3245                 if (i == LUMP_ENTITIES)
3246                         continue;
3247                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3248                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3249                         continue;
3250                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3251         }
3252
3253         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3254         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3255         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3256         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3257         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3258         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3259         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3260         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3261         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3262         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3263         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3264         // load submodels before leafs because they contain the number of vis leafs
3265         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3266         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3267         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3268         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3269
3270         if (!mod->brushq1.lightdata)
3271                 mod->brush.LightPoint = NULL;
3272
3273         if (mod->brushq1.data_compressedpvs)
3274                 Mem_Free(mod->brushq1.data_compressedpvs);
3275         mod->brushq1.data_compressedpvs = NULL;
3276         mod->brushq1.num_compressedpvs = 0;
3277
3278         Mod_Q1BSP_MakeHull0();
3279         Mod_Q1BSP_MakePortals();
3280
3281         mod->numframes = 2;             // regular and alternate animation
3282         mod->numskins = 1;
3283
3284         mainmempool = mod->mempool;
3285
3286         // make a single combined shadow mesh to allow optimized shadow volume creation
3287         numshadowmeshtriangles = 0;
3288         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3289         {
3290                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3291                 numshadowmeshtriangles += surface->num_triangles;
3292         }
3293         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3294         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3295                 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));
3296         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
3297         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3298
3299         if (loadmodel->brush.numsubmodels)
3300                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3301
3302         if (loadmodel->isworldmodel)
3303         {
3304                 // clear out any stale submodels or worldmodels lying around
3305                 // if we did this clear before now, an error might abort loading and
3306                 // leave things in a bad state
3307                 Mod_RemoveStaleWorldModels(loadmodel);
3308         }
3309
3310         // LordHavoc: to clear the fog around the original quake submodel code, I
3311         // will explain:
3312         // first of all, some background info on the submodels:
3313         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3314         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3315         // now the weird for loop itself:
3316         // the loop functions in an odd way, on each iteration it sets up the
3317         // current 'mod' model (which despite the confusing code IS the model of
3318         // the number i), at the end of the loop it duplicates the model to become
3319         // the next submodel, and loops back to set up the new submodel.
3320
3321         // LordHavoc: now the explanation of my sane way (which works identically):
3322         // set up the world model, then on each submodel copy from the world model
3323         // and set up the submodel with the respective model info.
3324         for (i = 0;i < mod->brush.numsubmodels;i++)
3325         {
3326                 // LordHavoc: this code was originally at the end of this loop, but
3327                 // has been transformed to something more readable at the start here.
3328
3329                 if (i > 0)
3330                 {
3331                         char name[10];
3332                         // LordHavoc: only register submodels if it is the world
3333                         // (prevents external bsp models from replacing world submodels with
3334                         //  their own)
3335                         if (!loadmodel->isworldmodel)
3336                                 continue;
3337                         // duplicate the basic information
3338                         sprintf(name, "*%i", i);
3339                         mod = Mod_FindName(name);
3340                         // copy the base model to this one
3341                         *mod = *loadmodel;
3342                         // rename the clone back to its proper name
3343                         strcpy(mod->name, name);
3344                         // textures and memory belong to the main model
3345                         mod->texturepool = NULL;
3346                         mod->mempool = NULL;
3347                 }
3348
3349                 mod->brush.submodel = i;
3350
3351                 if (loadmodel->brush.submodels)
3352                         loadmodel->brush.submodels[i] = mod;
3353
3354                 bm = &mod->brushq1.submodels[i];
3355
3356                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3357                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3358                 {
3359                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3360                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3361                 }
3362
3363                 mod->firstmodelsurface = bm->firstface;
3364                 mod->nummodelsurfaces = bm->numfaces;
3365
3366                 // make the model surface list (used by shadowing/lighting)
3367                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3368                 for (j = 0;j < mod->nummodelsurfaces;j++)
3369                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3370
3371                 // this gets altered below if sky is used
3372                 mod->DrawSky = NULL;
3373                 mod->Draw = R_Q1BSP_Draw;
3374                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3375                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3376                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3377                 mod->DrawLight = R_Q1BSP_DrawLight;
3378                 if (i != 0)
3379                 {
3380                         mod->brush.GetPVS = NULL;
3381                         mod->brush.FatPVS = NULL;
3382                         mod->brush.BoxTouchingPVS = NULL;
3383                         mod->brush.BoxTouchingLeafPVS = NULL;
3384                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3385                         mod->brush.FindBoxClusters = NULL;
3386                         mod->brush.LightPoint = NULL;
3387                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3388                 }
3389                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3390                 if (mod->nummodelsurfaces)
3391                 {
3392                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3393                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3394                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3395                         modelyawradius = 0;
3396                         modelradius = 0;
3397                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3398                         {
3399                                 // we only need to have a drawsky function if it is used(usually only on world model)
3400                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3401                                         mod->DrawSky = R_Q1BSP_DrawSky;
3402                                 // calculate bounding shapes
3403                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3404                                 {
3405                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3406                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3407                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3408                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3409                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3410                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3411                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3412                                         if (modelyawradius < dist)
3413                                                 modelyawradius = dist;
3414                                         dist += vec[2]*vec[2];
3415                                         if (modelradius < dist)
3416                                                 modelradius = dist;
3417                                 }
3418                         }
3419                         modelyawradius = sqrt(modelyawradius);
3420                         modelradius = sqrt(modelradius);
3421                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3422                         mod->yawmins[2] = mod->normalmins[2];
3423                         mod->yawmaxs[2] = mod->normalmaxs[2];
3424                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3425                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3426                         mod->radius = modelradius;
3427                         mod->radius2 = modelradius * modelradius;
3428                 }
3429                 else
3430                 {
3431                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3432                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3433                 }
3434                 //mod->brushq1.num_visleafs = bm->visleafs;
3435         }
3436
3437         Mod_Q1BSP_LoadMapBrushes();
3438
3439         //Mod_Q1BSP_ProcessLightList();
3440
3441         if (developer.integer >= 10)
3442                 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);
3443 }
3444
3445 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3446 {
3447 }
3448
3449 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3450 {
3451 /*
3452         d_t *in;
3453         m_t *out;
3454         int i, count;
3455
3456         in = (void *)(mod_base + l->fileofs);
3457         if (l->filelen % sizeof(*in))
3458                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3459         count = l->filelen / sizeof(*in);
3460         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3461
3462         loadmodel-> = out;
3463         loadmodel->num = count;
3464
3465         for (i = 0;i < count;i++, in++, out++)
3466         {
3467         }
3468 */
3469 }
3470
3471 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3472 {
3473 /*
3474         d_t *in;
3475         m_t *out;
3476         int i, count;
3477
3478         in = (void *)(mod_base + l->fileofs);
3479         if (l->filelen % sizeof(*in))
3480                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3481         count = l->filelen / sizeof(*in);
3482         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3483
3484         loadmodel-> = out;
3485         loadmodel->num = count;
3486
3487         for (i = 0;i < count;i++, in++, out++)
3488         {
3489         }
3490 */
3491 }
3492
3493 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3494 {
3495 /*
3496         d_t *in;
3497         m_t *out;
3498         int i, count;
3499
3500         in = (void *)(mod_base + l->fileofs);
3501         if (l->filelen % sizeof(*in))
3502                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3503         count = l->filelen / sizeof(*in);
3504         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3505
3506         loadmodel-> = out;
3507         loadmodel->num = count;
3508
3509         for (i = 0;i < count;i++, in++, out++)
3510         {
3511         }
3512 */
3513 }
3514
3515 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3516 {
3517 /*
3518         d_t *in;
3519         m_t *out;
3520         int i, count;
3521
3522         in = (void *)(mod_base + l->fileofs);
3523         if (l->filelen % sizeof(*in))
3524                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3525         count = l->filelen / sizeof(*in);
3526         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3527
3528         loadmodel-> = out;
3529         loadmodel->num = count;
3530
3531         for (i = 0;i < count;i++, in++, out++)
3532         {
3533         }
3534 */
3535 }
3536
3537 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3538 {
3539 /*
3540         d_t *in;
3541         m_t *out;
3542         int i, count;
3543
3544         in = (void *)(mod_base + l->fileofs);
3545         if (l->filelen % sizeof(*in))
3546                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3547         count = l->filelen / sizeof(*in);
3548         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3549
3550         loadmodel-> = out;
3551         loadmodel->num = count;
3552
3553         for (i = 0;i < count;i++, in++, out++)
3554         {
3555         }
3556 */
3557 }
3558
3559 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3560 {
3561 /*
3562         d_t *in;
3563         m_t *out;
3564         int i, count;
3565
3566         in = (void *)(mod_base + l->fileofs);
3567         if (l->filelen % sizeof(*in))
3568                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3569         count = l->filelen / sizeof(*in);
3570         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3571
3572         loadmodel-> = out;
3573         loadmodel->num = count;
3574
3575         for (i = 0;i < count;i++, in++, out++)
3576         {
3577         }
3578 */
3579 }
3580
3581 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3582 {
3583 /*
3584         d_t *in;
3585         m_t *out;
3586         int i, count;
3587
3588         in = (void *)(mod_base + l->fileofs);
3589         if (l->filelen % sizeof(*in))
3590                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3591         count = l->filelen / sizeof(*in);
3592         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3593
3594         loadmodel-> = out;
3595         loadmodel->num = count;
3596
3597         for (i = 0;i < count;i++, in++, out++)
3598         {
3599         }
3600 */
3601 }
3602
3603 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3604 {
3605 /*
3606         d_t *in;
3607         m_t *out;
3608         int i, count;
3609
3610         in = (void *)(mod_base + l->fileofs);
3611         if (l->filelen % sizeof(*in))
3612                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3613         count = l->filelen / sizeof(*in);
3614         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3615
3616         loadmodel-> = out;
3617         loadmodel->num = count;
3618
3619         for (i = 0;i < count;i++, in++, out++)
3620         {
3621         }
3622 */
3623 }
3624
3625 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3626 {
3627 /*
3628         d_t *in;
3629         m_t *out;
3630         int i, count;
3631
3632         in = (void *)(mod_base + l->fileofs);
3633         if (l->filelen % sizeof(*in))
3634                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3635         count = l->filelen / sizeof(*in);
3636         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3637
3638         loadmodel-> = out;
3639         loadmodel->num = count;
3640
3641         for (i = 0;i < count;i++, in++, out++)
3642         {
3643         }
3644 */
3645 }
3646
3647 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3648 {
3649 /*
3650         d_t *in;
3651         m_t *out;
3652         int i, count;
3653
3654         in = (void *)(mod_base + l->fileofs);
3655         if (l->filelen % sizeof(*in))
3656                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3657         count = l->filelen / sizeof(*in);
3658         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3659
3660         loadmodel-> = out;
3661         loadmodel->num = count;
3662
3663         for (i = 0;i < count;i++, in++, out++)
3664         {
3665         }
3666 */
3667 }
3668
3669 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3670 {
3671 /*
3672         d_t *in;
3673         m_t *out;
3674         int i, count;
3675
3676         in = (void *)(mod_base + l->fileofs);
3677         if (l->filelen % sizeof(*in))
3678                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3679         count = l->filelen / sizeof(*in);
3680         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3681
3682         loadmodel-> = out;
3683         loadmodel->num = count;
3684
3685         for (i = 0;i < count;i++, in++, out++)
3686         {
3687         }
3688 */
3689 }
3690
3691 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3692 {
3693 /*
3694         d_t *in;
3695         m_t *out;
3696         int i, count;
3697
3698         in = (void *)(mod_base + l->fileofs);
3699         if (l->filelen % sizeof(*in))
3700                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3701         count = l->filelen / sizeof(*in);
3702         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3703
3704         loadmodel-> = out;
3705         loadmodel->num = count;
3706
3707         for (i = 0;i < count;i++, in++, out++)
3708         {
3709         }
3710 */
3711 }
3712
3713 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3714 {
3715 /*
3716         d_t *in;
3717         m_t *out;
3718         int i, count;
3719
3720         in = (void *)(mod_base + l->fileofs);
3721         if (l->filelen % sizeof(*in))
3722                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3723         count = l->filelen / sizeof(*in);
3724         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3725
3726         loadmodel-> = out;
3727         loadmodel->num = count;
3728
3729         for (i = 0;i < count;i++, in++, out++)
3730         {
3731         }
3732 */
3733 }
3734
3735 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3736 {
3737 /*
3738         d_t *in;
3739         m_t *out;
3740         int i, count;
3741
3742         in = (void *)(mod_base + l->fileofs);
3743         if (l->filelen % sizeof(*in))
3744                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3745         count = l->filelen / sizeof(*in);
3746         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3747
3748         loadmodel-> = out;
3749         loadmodel->num = count;
3750
3751         for (i = 0;i < count;i++, in++, out++)
3752         {
3753         }
3754 */
3755 }
3756
3757 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3758 {
3759 /*
3760         d_t *in;
3761         m_t *out;
3762         int i, count;
3763
3764         in = (void *)(mod_base + l->fileofs);
3765         if (l->filelen % sizeof(*in))
3766                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3767         count = l->filelen / sizeof(*in);
3768         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3769
3770         loadmodel-> = out;
3771         loadmodel->num = count;
3772
3773         for (i = 0;i < count;i++, in++, out++)
3774         {
3775         }
3776 */
3777 }
3778
3779 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3780 {
3781 /*
3782         d_t *in;
3783         m_t *out;
3784         int i, count;
3785
3786         in = (void *)(mod_base + l->fileofs);
3787         if (l->filelen % sizeof(*in))
3788                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3789         count = l->filelen / sizeof(*in);
3790         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3791
3792         loadmodel-> = out;
3793         loadmodel->num = count;
3794
3795         for (i = 0;i < count;i++, in++, out++)
3796         {
3797         }
3798 */
3799 }
3800
3801 static void Mod_Q2BSP_LoadModels(lump_t *l)
3802 {
3803 /*
3804         d_t *in;
3805         m_t *out;
3806         int i, count;
3807
3808         in = (void *)(mod_base + l->fileofs);
3809         if (l->filelen % sizeof(*in))
3810                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3811         count = l->filelen / sizeof(*in);
3812         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3813
3814         loadmodel-> = out;
3815         loadmodel->num = count;
3816
3817         for (i = 0;i < count;i++, in++, out++)
3818         {
3819         }
3820 */
3821 }
3822
3823 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3824 {
3825         int i;
3826         q2dheader_t *header;
3827
3828         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3829
3830         mod->type = mod_brushq2;
3831
3832         header = (q2dheader_t *)buffer;
3833
3834         i = LittleLong(header->version);
3835         if (i != Q2BSPVERSION)
3836                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3837         mod->brush.ishlbsp = false;
3838         mod->brush.ismcbsp = false;
3839         if (loadmodel->isworldmodel)
3840         {
3841                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3842                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3843         }
3844
3845         mod_base = (unsigned char *)header;
3846
3847         // swap all the lumps
3848         for (i = 0;i < (int) sizeof(*header) / 4;i++)
3849                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
3850
3851         // store which lightmap format to use
3852         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3853
3854         mod->brush.qw_md4sum = 0;
3855         mod->brush.qw_md4sum2 = 0;
3856         for (i = 0;i < Q2HEADER_LUMPS;i++)
3857         {
3858                 if (i == Q2LUMP_ENTITIES)
3859                         continue;
3860                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3861                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
3862                         continue;
3863                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3864         }
3865
3866         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
3867         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
3868         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
3869         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
3870         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
3871         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
3872         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
3873         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
3874         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
3875         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
3876         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
3877         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
3878         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
3879         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
3880         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
3881         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
3882         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
3883         // LordHavoc: must go last because this makes the submodels
3884         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
3885 }
3886
3887 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
3888 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
3889
3890 static void Mod_Q3BSP_LoadEntities(lump_t *l)
3891 {
3892         const char *data;
3893         char key[128], value[MAX_INPUTLINE];
3894         float v[3];
3895         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
3896         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
3897         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
3898         if (!l->filelen)
3899                 return;
3900         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
3901         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
3902         data = loadmodel->brush.entities;
3903         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
3904         if (data && COM_ParseToken(&data, false) && com_token[0] == '{')
3905         {
3906                 while (1)
3907                 {
3908                         if (!COM_ParseToken(&data, false))
3909                                 break; // error
3910                         if (com_token[0] == '}')
3911                                 break; // end of worldspawn
3912                         if (com_token[0] == '_')
3913                                 strcpy(key, com_token + 1);
3914                         else
3915                                 strcpy(key, com_token);
3916                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
3917                                 key[strlen(key)-1] = 0;
3918                         if (!COM_ParseToken(&data, false))
3919                                 break; // error
3920                         strcpy(value, com_token);
3921                         if (!strcmp("gridsize", key))
3922                         {
3923                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
3924                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
3925                         }
3926                 }
3927         }
3928 }
3929
3930 // FIXME: make MAXSHADERS dynamic
3931 #define Q3SHADER_MAXSHADERS 4096
3932 #define Q3SHADER_MAXLAYERS 8
3933
3934 typedef struct q3shaderinfo_layer_s
3935 {
3936         char texturename[Q3PATHLENGTH];
3937         int blendfunc[2];
3938         qboolean rgbgenvertex;
3939         qboolean alphagenvertex;
3940 }
3941 q3shaderinfo_layer_t;
3942
3943 typedef struct q3shaderinfo_s
3944 {
3945         char name[Q3PATHLENGTH];
3946         int surfaceparms;
3947         int textureflags;
3948         int numlayers;
3949         qboolean lighting;
3950         qboolean vertexalpha;
3951         qboolean textureblendalpha;
3952         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
3953         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
3954         char skyboxname[Q3PATHLENGTH];
3955 }
3956 q3shaderinfo_t;
3957
3958 int q3shaders_numshaders;
3959 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
3960
3961 static void Mod_Q3BSP_LoadShaders(void)
3962 {
3963         int j;
3964         int fileindex;
3965         fssearch_t *search;
3966         char *f;
3967         const char *text;
3968         q3shaderinfo_t *shader;
3969         q3shaderinfo_layer_t *layer;
3970         int numparameters;
3971         char parameter[4][Q3PATHLENGTH];
3972         search = FS_Search("scripts/*.shader", true, false);
3973         if (!search)
3974                 return;
3975         q3shaders_numshaders = 0;
3976         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
3977         {
3978                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
3979                 if (!f)
3980                         continue;
3981                 while (COM_ParseToken(&text, false))
3982                 {
3983                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
3984                         {
3985                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
3986                                 break;
3987                         }
3988                         shader = q3shaders_shaders + q3shaders_numshaders++;
3989                         memset(shader, 0, sizeof(*shader));
3990                         strlcpy(shader->name, com_token, sizeof(shader->name));
3991                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
3992                         {
3993                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
3994                                 break;
3995                         }
3996                         while (COM_ParseToken(&text, false))
3997                         {
3998                                 if (!strcasecmp(com_token, "}"))
3999                                         break;
4000                                 if (!strcasecmp(com_token, "{"))
4001                                 {
4002                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4003                                         {
4004                                                 layer = shader->layers + shader->numlayers++;
4005                                                 layer->rgbgenvertex = false;
4006                                                 layer->alphagenvertex = false;
4007                                                 layer->blendfunc[0] = GL_ONE;
4008                                                 layer->blendfunc[1] = GL_ZERO;
4009                                         }
4010                                         else
4011                                                 layer = NULL;
4012                                         while (COM_ParseToken(&text, false))
4013                                         {
4014                                                 if (!strcasecmp(com_token, "}"))
4015                                                         break;
4016                                                 if (!strcasecmp(com_token, "\n"))
4017                                                         continue;
4018                                                 if (layer == NULL)
4019                                                         continue;
4020                                                 numparameters = 0;
4021                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4022                                                 {
4023                                                         if (j < 4)
4024                                                         {
4025                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4026                                                                 numparameters = j + 1;
4027                                                         }
4028                                                         if (!COM_ParseToken(&text, true))
4029                                                                 break;
4030                                                 }
4031                                                 if (developer.integer >= 100)
4032                                                 {
4033                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4034                                                         for (j = 0;j < numparameters;j++)
4035                                                                 Con_Printf(" %s", parameter[j]);
4036                                                         Con_Print("\n");
4037                                                 }
4038                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4039                                                 {
4040                                                         if (numparameters == 2)
4041                                                         {
4042                                                                 if (!strcasecmp(parameter[1], "add"))
4043                                                                 {
4044                                                                         layer->blendfunc[0] = GL_ONE;
4045                                                                         layer->blendfunc[1] = GL_ONE;
4046                                                                 }
4047                                                                 else if (!strcasecmp(parameter[1], "filter"))
4048                                                                 {
4049                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4050                                                                         layer->blendfunc[1] = GL_ZERO;
4051                                                                 }
4052                                                                 else if (!strcasecmp(parameter[1], "blend"))
4053                                                                 {
4054                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4055                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4056                                                                 }
4057                                                         }
4058                                                         else if (numparameters == 3)
4059                                                         {
4060                                                                 int k;
4061                                                                 for (k = 0;k < 2;k++)
4062                                                                 {
4063                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4064                                                                                 layer->blendfunc[k] = GL_ONE;
4065                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4066                                                                                 layer->blendfunc[k] = GL_ZERO;
4067                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4068                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4069                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4070                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4071                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4072                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4073                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4074                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4075                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4076                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4077                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4078                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4079                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4080                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4081                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4082                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4083                                                                         else
4084                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4085                                                                 }
4086                                                         }
4087                                                 }
4088                                                 if (layer == shader->layers + 0)
4089                                                 {
4090                                                         if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4091                                                                 shader->textureflags |= Q3TEXTUREFLAG_ALPHATEST;
4092                                                 }
4093                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4094                                                 {
4095                                                         strlcpy(layer->texturename, parameter[1], sizeof(layer->texturename));
4096                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4097                                                                 shader->lighting = true;
4098                                                 }
4099                                                 else if (numparameters >= 3 && !strcasecmp(parameter[0], "animmap"))
4100                                                         strlcpy(layer->texturename, parameter[2], sizeof(layer->texturename));
4101                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4102                                                         layer->rgbgenvertex = true;
4103                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4104                                                         layer->alphagenvertex = true;
4105                                                 // break out a level if it was }
4106                                                 if (!strcasecmp(com_token, "}"))
4107                                                         break;
4108                                         }
4109                                         if (layer->rgbgenvertex)
4110                                                 shader->lighting = true;
4111                                         if (layer->alphagenvertex)
4112                                         {
4113                                                 if (layer == shader->layers + 0)
4114                                                 {
4115                                                         // vertex controlled transparency
4116                                                         shader->vertexalpha = true;
4117                                                 }
4118                                                 else
4119                                                 {
4120                                                         // multilayer terrain shader or similar
4121                                                         shader->textureblendalpha = true;
4122                                                 }
4123                                         }
4124                                         continue;
4125                                 }
4126                                 numparameters = 0;
4127                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4128                                 {
4129                                         if (j < 4)
4130                                         {
4131                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4132                                                 numparameters = j + 1;
4133                                         }
4134                                         if (!COM_ParseToken(&text, true))
4135                                                 break;
4136                                 }
4137                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4138                                         break;
4139                                 if (developer.integer >= 100)
4140                                 {
4141                                         Con_Printf("%s: ", shader->name);
4142                                         for (j = 0;j < numparameters;j++)
4143                                                 Con_Printf(" %s", parameter[j]);
4144                                         Con_Print("\n");
4145                                 }
4146                                 if (numparameters < 1)
4147                                         continue;
4148                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4149                                 {
4150                                         if (!strcasecmp(parameter[1], "alphashadow"))
4151                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4152                                         else if (!strcasecmp(parameter[1], "areaportal"))
4153                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4154                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4155                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4156                                         else if (!strcasecmp(parameter[1], "detail"))
4157                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4158                                         else if (!strcasecmp(parameter[1], "donotenter"))
4159                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4160                                         else if (!strcasecmp(parameter[1], "fog"))
4161                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4162                                         else if (!strcasecmp(parameter[1], "lava"))
4163                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4164                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4165                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4166                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4167                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4168                                         else if (!strcasecmp(parameter[1], "nodamage"))
4169                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4170                                         else if (!strcasecmp(parameter[1], "nodlight"))
4171                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4172                                         else if (!strcasecmp(parameter[1], "nodraw"))
4173                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4174                                         else if (!strcasecmp(parameter[1], "nodrop"))
4175                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4176                                         else if (!strcasecmp(parameter[1], "noimpact"))
4177                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4178                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4179                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4180                                         else if (!strcasecmp(parameter[1], "nomarks"))
4181                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4182                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4183                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4184                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4185                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4186                                         else if (!strcasecmp(parameter[1], "origin"))
4187                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4188                                         else if (!strcasecmp(parameter[1], "playerclip"))
4189                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4190                                         else if (!strcasecmp(parameter[1], "sky"))
4191                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4192                                         else if (!strcasecmp(parameter[1], "slick"))
4193                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4194                                         else if (!strcasecmp(parameter[1], "slime"))
4195                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4196                                         else if (!strcasecmp(parameter[1], "structural"))
4197                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4198                                         else if (!strcasecmp(parameter[1], "trans"))
4199                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4200                                         else if (!strcasecmp(parameter[1], "water"))
4201                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4202                                         else if (!strcasecmp(parameter[1], "pointlight"))
4203                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4204                                         else
4205                                                 Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4206                                 }
4207                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4208                                 {
4209                                         // some q3 skies don't have the sky parm set
4210                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4211                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4212                                 }
4213                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4214                                 {
4215                                         // some q3 skies don't have the sky parm set
4216                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4217                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4218                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4219                                 }
4220                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4221                                 {
4222                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4223                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4224                                 }
4225                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4226                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4227                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4228                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4229                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4230                                 {
4231                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4232                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4233                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4234                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4235                                 }
4236                         }
4237                         // identify if this is a blended terrain shader or similar
4238                         if (shader->numlayers)
4239                         {
4240                                 shader->primarylayer = shader->layers + 0;
4241                                 if (shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4242                                 {
4243                                         // terrain blending or other effects
4244                                         shader->backgroundlayer = shader->layers + 0;
4245                                         shader->primarylayer = shader->layers + 1;
4246                                 }
4247                                 // now see if the lightmap came first, and if so choose the second texture instead
4248                                 if (!strcasecmp(shader->primarylayer->texturename, "$lightmap"))
4249                                         shader->primarylayer = shader->layers + 1;
4250                         }
4251                 }
4252                 Mem_Free(f);
4253         }
4254 }
4255
4256 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4257 {
4258         int i;
4259         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4260                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4261                         return q3shaders_shaders + i;
4262         return NULL;
4263 }
4264
4265 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4266 {
4267         q3dtexture_t *in;
4268         texture_t *out;
4269         int i, count, c;
4270
4271         in = (q3dtexture_t *)(mod_base + l->fileofs);
4272         if (l->filelen % sizeof(*in))
4273                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4274         count = l->filelen / sizeof(*in);
4275         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4276
4277         loadmodel->data_textures = out;
4278         loadmodel->num_textures = count;
4279
4280         // parse the Q3 shader files
4281         Mod_Q3BSP_LoadShaders();
4282
4283         c = 0;
4284         for (i = 0;i < count;i++, in++, out++)
4285         {
4286                 q3shaderinfo_t *shader;
4287                 strlcpy (out->name, in->name, sizeof (out->name));
4288                 out->surfaceflags = LittleLong(in->surfaceflags);
4289                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4290                 shader = Mod_Q3BSP_LookupShader(out->name);
4291                 if (shader)
4292                 {
4293                         out->surfaceparms = shader->surfaceparms;
4294                         out->textureflags = shader->textureflags;
4295                         out->basematerialflags = 0;
4296                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4297                         {
4298                                 out->basematerialflags |= MATERIALFLAG_SKY;
4299                                 if (shader->skyboxname[0])
4300                                 {
4301                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4302                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4303                                 }
4304                         }
4305                         else if ((shader->surfaceparms & Q3SURFACEPARM_NODRAW) || shader->numlayers == 0)
4306                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4307                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4308                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
4309                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4310                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4311                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4312                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4313                         else
4314                                 out->basematerialflags |= MATERIALFLAG_WALL;
4315                         if (shader->textureflags & Q3TEXTUREFLAG_ALPHATEST)
4316                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_TRANSPARENT;
4317                         out->customblendfunc[0] = GL_ONE;
4318                         out->customblendfunc[1] = GL_ZERO;
4319                         if (shader->numlayers > 0)
4320                         {
4321                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4322                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4323 /*
4324 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4325 * additive               GL_ONE GL_ONE
4326   additive weird         GL_ONE GL_SRC_ALPHA
4327   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4328 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4329   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4330   brighten               GL_DST_COLOR GL_ONE
4331   brighten               GL_ONE GL_SRC_COLOR
4332   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4333   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4334 * modulate               GL_DST_COLOR GL_ZERO
4335 * modulate               GL_ZERO GL_SRC_COLOR
4336   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4337   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4338   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4339 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4340 * no blend               GL_ONE GL_ZERO
4341   nothing                GL_ZERO GL_ONE
4342 */
4343                                 // if not opaque, figure out what blendfunc to use
4344                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4345                                 {
4346                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4347                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4348                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4349                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4350                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4351                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4352                                         else
4353                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4354                                 }
4355                         }
4356                         if (!shader->lighting)
4357                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4358                         if (cls.state != ca_dedicated)
4359                                 if (shader->primarylayer && !Mod_LoadSkinFrame(&out->skin, shader->primarylayer->texturename, ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP), false, true))
4360                                         Con_Printf("%s: could not load texture \"%s\" for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename, out->name);
4361                 }
4362                 else
4363                 {
4364                         c++;
4365                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4366                         out->surfaceparms = 0;
4367                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4368                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4369                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4370                                 out->basematerialflags |= MATERIALFLAG_SKY;
4371                         else
4372                                 out->basematerialflags |= MATERIALFLAG_WALL;
4373                         // these are defaults
4374                         //if (!strncmp(out->name, "textures/skies/", 15))
4375                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4376                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4377                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4378                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4379                         //if (R_TextureHasAlpha(out->skin.base))
4380                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4381                         if (cls.state != ca_dedicated)
4382                                 if (!Mod_LoadSkinFrame(&out->skin, out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
4383                                         Con_Printf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4384                 }
4385                 // no animation
4386                 out->currentframe = out;
4387         }
4388         if (c)
4389                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4390 }
4391
4392 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4393 {
4394         q3dplane_t *in;
4395         mplane_t *out;
4396         int i, count;
4397
4398         in = (q3dplane_t *)(mod_base + l->fileofs);
4399         if (l->filelen % sizeof(*in))
4400                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4401         count = l->filelen / sizeof(*in);
4402         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4403
4404         loadmodel->brush.data_planes = out;
4405         loadmodel->brush.num_planes = count;
4406
4407         for (i = 0;i < count;i++, in++, out++)
4408         {
4409                 out->normal[0] = LittleFloat(in->normal[0]);
4410                 out->normal[1] = LittleFloat(in->normal[1]);
4411                 out->normal[2] = LittleFloat(in->normal[2]);
4412                 out->dist = LittleFloat(in->dist);
4413                 PlaneClassify(out);
4414         }
4415 }
4416
4417 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4418 {
4419         q3dbrushside_t *in;
4420         q3mbrushside_t *out;
4421         int i, n, count;
4422
4423         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4424         if (l->filelen % sizeof(*in))
4425                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4426         count = l->filelen / sizeof(*in);
4427         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4428
4429         loadmodel->brush.data_brushsides = out;
4430         loadmodel->brush.num_brushsides = count;
4431
4432         for (i = 0;i < count;i++, in++, out++)
4433         {
4434                 n = LittleLong(in->planeindex);
4435                 if (n < 0 || n >= loadmodel->brush.num_planes)
4436                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4437                 out->plane = loadmodel->brush.data_planes + n;
4438                 n = LittleLong(in->textureindex);
4439                 if (n < 0 || n >= loadmodel->num_textures)
4440                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4441                 out->texture = loadmodel->data_textures + n;
4442         }
4443 }
4444
4445 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4446 {
4447         q3dbrush_t *in;
4448         q3mbrush_t *out;
4449         int i, j, n, c, count, maxplanes;
4450         colplanef_t *planes;
4451
4452         in = (q3dbrush_t *)(mod_base + l->fileofs);
4453         if (l->filelen % sizeof(*in))
4454                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4455         count = l->filelen / sizeof(*in);
4456         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4457
4458         loadmodel->brush.data_brushes = out;
4459         loadmodel->brush.num_brushes = count;
4460
4461         maxplanes = 0;
4462         planes = NULL;
4463
4464         for (i = 0;i < count;i++, in++, out++)
4465         {
4466                 n = LittleLong(in->firstbrushside);
4467                 c = LittleLong(in->numbrushsides);
4468                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4469                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4470                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4471                 out->numbrushsides = c;
4472                 n = LittleLong(in->textureindex);
4473                 if (n < 0 || n >= loadmodel->num_textures)
4474                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4475                 out->texture = loadmodel->data_textures + n;
4476
4477                 // make a list of mplane_t structs to construct a colbrush from
4478                 if (maxplanes < out->numbrushsides)
4479                 {
4480                         maxplanes = out->numbrushsides;
4481                         if (planes)
4482                                 Mem_Free(planes);
4483                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4484                 }
4485                 for (j = 0;j < out->numbrushsides;j++)
4486                 {
4487                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4488                         planes[j].dist = out->firstbrushside[j].plane->dist;
4489                         planes[j].supercontents = out->firstbrushside[j].texture->supercontents;
4490                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4491                         planes[j].texture = out->firstbrushside[j].texture;
4492                 }
4493                 // make the colbrush from the planes
4494                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes);
4495         }
4496         if (planes)
4497                 Mem_Free(planes);
4498 }
4499
4500 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4501 {
4502         q3deffect_t *in;
4503         q3deffect_t *out;
4504         int i, n, count;
4505
4506         in = (q3deffect_t *)(mod_base + l->fileofs);
4507         if (l->filelen % sizeof(*in))
4508                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4509         count = l->filelen / sizeof(*in);
4510         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4511
4512         loadmodel->brushq3.data_effects = out;
4513         loadmodel->brushq3.num_effects = count;
4514
4515         for (i = 0;i < count;i++, in++, out++)
4516         {
4517                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4518                 n = LittleLong(in->brushindex);
4519                 if (n >= loadmodel->brush.num_brushes)
4520                 {
4521                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4522                         n = -1;
4523                 }
4524                 out->brushindex = n;
4525                 out->unknown = LittleLong(in->unknown);
4526         }
4527 }
4528
4529 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4530 {
4531         q3dvertex_t *in;
4532         int i, count;
4533
4534         in = (q3dvertex_t *)(mod_base + l->fileofs);
4535         if (l->filelen % sizeof(*in))
4536                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4537         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4538         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4539         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4540         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4541         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4542         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4543
4544         for (i = 0;i < count;i++, in++)
4545         {
4546                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4547                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4548                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4549                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4550                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4551                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4552                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4553                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4554                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4555                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4556                 // svector/tvector are calculated later in face loading
4557                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4558                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4559                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4560                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4561         }
4562 }
4563
4564 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4565 {
4566         int *in;
4567         int *out;
4568         int i, count;
4569
4570         in = (int *)(mod_base + l->fileofs);
4571         if (l->filelen % sizeof(int[3]))
4572                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4573         count = l->filelen / sizeof(*in);
4574         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4575
4576         loadmodel->brushq3.num_triangles = count / 3;
4577         loadmodel->brushq3.data_element3i = out;
4578
4579         for (i = 0;i < count;i++, in++, out++)
4580         {
4581                 *out = LittleLong(*in);
4582                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4583                 {
4584                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4585                         *out = 0;
4586                 }
4587         }
4588 }
4589
4590 static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
4591 {
4592         q3dlightmap_t *in;
4593         rtexture_t **out;
4594         int i, count;
4595
4596         if (!l->filelen)
4597                 return;
4598         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4599         if (l->filelen % sizeof(*in))
4600                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4601         count = l->filelen / sizeof(*in);
4602         out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4603
4604         loadmodel->brushq3.data_lightmaps = out;
4605         loadmodel->brushq3.num_lightmaps = count;
4606
4607         for (i = 0;i < count;i++, in++, out++)
4608                 *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4609 }
4610
4611 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4612 {
4613         q3dface_t *in, *oldin;
4614         msurface_t *out, *oldout;
4615         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4616         //int *originalelement3i;
4617         //int *originalneighbor3i;
4618         float *originalvertex3f;
4619         //float *originalsvector3f;
4620         //float *originaltvector3f;
4621         float *originalnormal3f;
4622         float *originalcolor4f;
4623         float *originaltexcoordtexture2f;
4624         float *originaltexcoordlightmap2f;
4625         float *v;
4626
4627         in = (q3dface_t *)(mod_base + l->fileofs);
4628         if (l->filelen % sizeof(*in))
4629                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4630         count = l->filelen / sizeof(*in);
4631         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4632
4633         loadmodel->data_surfaces = out;
4634         loadmodel->num_surfaces = count;
4635
4636         // deluxemapped q3bsp files have an even number of lightmaps, and surfaces
4637         // always index even numbered ones (0, 2, 4, ...), the odd numbered
4638         // lightmaps are the deluxemaps (light direction textures), so if we
4639         // encounter any odd numbered lightmaps it is not a deluxemapped bsp, it
4640         // is also not a deluxemapped bsp if it has an odd number of lightmaps or
4641         // less than 2
4642         loadmodel->brushq3.deluxemapping = true;
4643         loadmodel->brushq3.deluxemapping_modelspace = true;
4644         if (loadmodel->brushq3.num_lightmaps >= 2 && !(loadmodel->brushq3.num_lightmaps & 1))
4645         {
4646                 for (i = 0;i < count;i++)
4647                 {
4648                         n = LittleLong(in[i].lightmapindex);
4649                         if (n >= 0 && ((n & 1) || n + 1 >= loadmodel->brushq3.num_lightmaps))
4650                         {
4651                                 loadmodel->brushq3.deluxemapping = false;
4652                                 break;
4653                         }
4654                 }
4655         }
4656         else
4657                 loadmodel->brushq3.deluxemapping = false;
4658         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4659
4660         i = 0;
4661         oldi = i;
4662         oldin = in;
4663         oldout = out;
4664         meshvertices = 0;
4665         meshtriangles = 0;
4666         for (;i < count;i++, in++, out++)
4667         {
4668                 // check face type first
4669                 type = LittleLong(in->type);
4670                 if (type != Q3FACETYPE_POLYGON
4671                  && type != Q3FACETYPE_PATCH
4672                  && type != Q3FACETYPE_MESH
4673                  && type != Q3FACETYPE_FLARE)
4674                 {
4675                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4676                         continue;
4677                 }
4678
4679                 n = LittleLong(in->textureindex);
4680                 if (n < 0 || n >= loadmodel->num_textures)
4681                 {
4682                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4683                         continue;
4684                 }
4685                 out->texture = loadmodel->data_textures + n;
4686                 n = LittleLong(in->effectindex);
4687                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4688                 {
4689                         if (developer.integer >= 100)
4690                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4691                         n = -1;
4692                 }
4693                 if (n == -1)
4694                         out->effect = NULL;
4695                 else
4696                         out->effect = loadmodel->brushq3.data_effects + n;
4697                 n = LittleLong(in->lightmapindex);
4698                 if (n >= loadmodel->brushq3.num_lightmaps)
4699                 {
4700                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
4701                         n = -1;
4702                 }
4703                 else if (n < 0)
4704                         n = -1;
4705                 if (n == -1)
4706                 {
4707                         out->lightmaptexture = NULL;
4708                         out->deluxemaptexture = r_texture_blanknormalmap;
4709                 }
4710                 else
4711                 {
4712                         out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
4713                         if (loadmodel->brushq3.deluxemapping)
4714                                 out->deluxemaptexture = loadmodel->brushq3.data_lightmaps[n+1];
4715                         else
4716                                 out->deluxemaptexture = r_texture_blanknormalmap;
4717                 }
4718
4719                 firstvertex = LittleLong(in->firstvertex);
4720                 numvertices = LittleLong(in->numvertices);
4721                 firstelement = LittleLong(in->firstelement);
4722                 numtriangles = LittleLong(in->numelements) / 3;
4723                 if (numtriangles * 3 != LittleLong(in->numelements))
4724                 {
4725                         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));
4726                         continue;
4727                 }
4728                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4729                 {
4730                         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);
4731                         continue;
4732                 }
4733                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4734                 {
4735                         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);
4736                         continue;
4737                 }
4738                 switch(type)
4739                 {
4740                 case Q3FACETYPE_POLYGON:
4741                 case Q3FACETYPE_MESH:
4742                         // no processing necessary
4743                         break;
4744                 case Q3FACETYPE_PATCH:
4745                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4746                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4747                         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))
4748                         {
4749                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4750                                 continue;
4751                         }
4752                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4753                         // convert patch to Q3FACETYPE_MESH
4754                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4755                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4756                         // bound to user settings
4757                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4758                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4759                         // bound to sanity settings
4760                         xtess = bound(1, xtess, 1024);
4761                         ytess = bound(1, ytess, 1024);
4762                         // bound to user limit on vertices
4763                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4764                         {
4765                                 if (xtess > ytess)
4766                                         xtess--;
4767                                 else
4768                                         ytess--;
4769                         }
4770                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4771                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4772                         numvertices = finalwidth * finalheight;
4773                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4774                         break;
4775                 case Q3FACETYPE_FLARE:
4776                         if (developer.integer >= 100)
4777                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4778                         // don't render it
4779                         continue;
4780                 }
4781                 out->num_vertices = numvertices;
4782                 out->num_triangles = numtriangles;
4783                 meshvertices += out->num_vertices;
4784                 meshtriangles += out->num_triangles;
4785         }
4786
4787         i = oldi;
4788         in = oldin;
4789         out = oldout;
4790         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4791         meshvertices = 0;
4792         meshtriangles = 0;
4793         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4794         {
4795                 if (out->num_vertices < 3 || out->num_triangles < 1)
4796                         continue;
4797
4798                 type = LittleLong(in->type);
4799                 firstvertex = LittleLong(in->firstvertex);
4800                 firstelement = LittleLong(in->firstelement);
4801                 out->num_firstvertex = meshvertices;
4802                 out->num_firsttriangle = meshtriangles;
4803                 switch(type)
4804                 {
4805                 case Q3FACETYPE_POLYGON:
4806                 case Q3FACETYPE_MESH:
4807                         // no processing necessary
4808                         for (j = 0;j < out->num_vertices;j++)
4809                         {
4810                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4811                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4812                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4813                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4814                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4815                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4816                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4817                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4818                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4819                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4820                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4821                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4822                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4823                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4824                         }
4825                         for (j = 0;j < out->num_triangles*3;j++)
4826                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4827                         break;
4828                 case Q3FACETYPE_PATCH:
4829                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4830                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4831                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4832                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4833                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4834                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4835                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4836                         // convert patch to Q3FACETYPE_MESH
4837                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4838                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4839                         // bound to user settings
4840                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4841                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4842                         // bound to sanity settings
4843                         xtess = bound(1, xtess, 1024);
4844                         ytess = bound(1, ytess, 1024);
4845                         // bound to user limit on vertices
4846                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4847                         {
4848                                 if (xtess > ytess)
4849                                         xtess--;
4850                                 else
4851                                         ytess--;
4852                         }
4853                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4854                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4855                         finalvertices = finalwidth * finalheight;
4856                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4857                         type = Q3FACETYPE_MESH;
4858                         // generate geometry
4859                         // (note: normals are skipped because they get recalculated)
4860                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4861                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4862                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4863                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4864                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4865                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4866                         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);
4867                         if (developer.integer >= 100)
4868                         {
4869                                 if (out->num_triangles < finaltriangles)
4870                                         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);
4871                                 else
4872                                         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);
4873                         }
4874                         // q3map does not put in collision brushes for curves... ugh
4875                         // build the lower quality collision geometry
4876                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4877                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4878                         // bound to user settings
4879                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4880                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4881                         // bound to sanity settings
4882                         xtess = bound(1, xtess, 1024);
4883                         ytess = bound(1, ytess, 1024);
4884                         // bound to user limit on vertices
4885                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4886                         {
4887                                 if (xtess > ytess)
4888                                         xtess--;
4889                                 else
4890                                         ytess--;
4891                         }
4892                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4893                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4894                         finalvertices = finalwidth * finalheight;
4895                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4896
4897                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4898                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4899                         out->num_collisionvertices = finalvertices;
4900                         out->num_collisiontriangles = finaltriangles;
4901                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4902                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4903
4904                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4905                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4906
4907                         oldnumtriangles = out->num_triangles;
4908                         oldnumtriangles2 = out->num_collisiontriangles;
4909                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4910                         if (developer.integer >= 100)
4911                                 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);
4912                         break;
4913                 default:
4914                         break;
4915                 }
4916                 meshvertices += out->num_vertices;
4917                 meshtriangles += out->num_triangles;
4918                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
4919                         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)
4920                                 invalidelements++;
4921                 if (invalidelements)
4922                 {
4923                         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);
4924                         for (j = 0;j < out->num_triangles * 3;j++)
4925                         {
4926                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
4927                                 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)
4928                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
4929                         }
4930                         Con_Print("\n");
4931                 }
4932                 // calculate a bounding box
4933                 VectorClear(out->mins);
4934                 VectorClear(out->maxs);
4935                 if (out->num_vertices)
4936                 {
4937                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
4938                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
4939                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
4940                         {
4941                                 out->mins[0] = min(out->mins[0], v[0]);
4942                                 out->maxs[0] = max(out->maxs[0], v[0]);
4943                                 out->mins[1] = min(out->mins[1], v[1]);
4944                                 out->maxs[1] = max(out->maxs[1], v[1]);
4945                                 out->mins[2] = min(out->mins[2], v[2]);
4946                                 out->maxs[2] = max(out->maxs[2], v[2]);
4947                         }
4948                         out->mins[0] -= 1.0f;
4949                         out->mins[1] -= 1.0f;
4950                         out->mins[2] -= 1.0f;
4951                         out->maxs[0] += 1.0f;
4952                         out->maxs[1] += 1.0f;
4953                         out->maxs[2] += 1.0f;
4954                 }
4955                 // set lightmap styles for consistency with q1bsp
4956                 //out->lightmapinfo->styles[0] = 0;
4957                 //out->lightmapinfo->styles[1] = 255;
4958                 //out->lightmapinfo->styles[2] = 255;
4959                 //out->lightmapinfo->styles[3] = 255;
4960         }
4961
4962         // for per pixel lighting
4963         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);
4964
4965         // free the no longer needed vertex data
4966         loadmodel->brushq3.num_vertices = 0;
4967         Mem_Free(loadmodel->brushq3.data_vertex3f);
4968         loadmodel->brushq3.data_vertex3f = NULL;
4969         loadmodel->brushq3.data_normal3f = NULL;
4970         loadmodel->brushq3.data_texcoordtexture2f = NULL;
4971         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
4972         loadmodel->brushq3.data_color4f = NULL;
4973         // free the no longer needed triangle data
4974         loadmodel->brushq3.num_triangles = 0;
4975         Mem_Free(loadmodel->brushq3.data_element3i);
4976         loadmodel->brushq3.data_element3i = NULL;
4977 }
4978
4979 static void Mod_Q3BSP_LoadModels(lump_t *l)
4980 {
4981         q3dmodel_t *in;
4982         q3dmodel_t *out;
4983         int i, j, n, c, count;
4984
4985         in = (q3dmodel_t *)(mod_base + l->fileofs);
4986         if (l->filelen % sizeof(*in))
4987                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
4988         count = l->filelen / sizeof(*in);
4989         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4990
4991         loadmodel->brushq3.data_models = out;
4992         loadmodel->brushq3.num_models = count;
4993
4994         for (i = 0;i < count;i++, in++, out++)
4995         {
4996                 for (j = 0;j < 3;j++)
4997                 {
4998                         out->mins[j] = LittleFloat(in->mins[j]);
4999                         out->maxs[j] = LittleFloat(in->maxs[j]);
5000                 }
5001                 n = LittleLong(in->firstface);
5002                 c = LittleLong(in->numfaces);
5003                 if (n < 0 || n + c > loadmodel->num_surfaces)
5004                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5005                 out->firstface = n;
5006                 out->numfaces = c;
5007                 n = LittleLong(in->firstbrush);
5008                 c = LittleLong(in->numbrushes);
5009                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5010                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5011                 out->firstbrush = n;
5012                 out->numbrushes = c;
5013         }
5014 }
5015
5016 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5017 {
5018         int *in;
5019         int *out;
5020         int i, n, count;
5021
5022         in = (int *)(mod_base + l->fileofs);
5023         if (l->filelen % sizeof(*in))
5024                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5025         count = l->filelen / sizeof(*in);
5026         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5027
5028         loadmodel->brush.data_leafbrushes = out;
5029         loadmodel->brush.num_leafbrushes = count;
5030
5031         for (i = 0;i < count;i++, in++, out++)
5032         {
5033                 n = LittleLong(*in);
5034                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5035                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5036                 *out = n;
5037         }
5038 }
5039
5040 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5041 {
5042         int *in;
5043         int *out;
5044         int i, n, count;
5045
5046         in = (int *)(mod_base + l->fileofs);
5047         if (l->filelen % sizeof(*in))
5048                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5049         count = l->filelen / sizeof(*in);
5050         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5051
5052         loadmodel->brush.data_leafsurfaces = out;
5053         loadmodel->brush.num_leafsurfaces = count;
5054
5055         for (i = 0;i < count;i++, in++, out++)
5056         {
5057                 n = LittleLong(*in);
5058                 if (n < 0 || n >= loadmodel->num_surfaces)
5059                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5060                 *out = n;
5061         }
5062 }
5063
5064 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5065 {
5066         q3dleaf_t *in;
5067         mleaf_t *out;
5068         int i, j, n, c, count;
5069
5070         in = (q3dleaf_t *)(mod_base + l->fileofs);
5071         if (l->filelen % sizeof(*in))
5072                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5073         count = l->filelen / sizeof(*in);
5074         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5075
5076         loadmodel->brush.data_leafs = out;
5077         loadmodel->brush.num_leafs = count;
5078
5079         for (i = 0;i < count;i++, in++, out++)
5080         {
5081                 out->parent = NULL;
5082                 out->plane = NULL;
5083                 out->clusterindex = LittleLong(in->clusterindex);
5084                 out->areaindex = LittleLong(in->areaindex);
5085                 for (j = 0;j < 3;j++)
5086                 {
5087                         // yes the mins/maxs are ints
5088                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5089                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5090                 }
5091                 n = LittleLong(in->firstleafface);
5092                 c = LittleLong(in->numleaffaces);
5093                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5094                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5095                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5096                 out->numleafsurfaces = c;
5097                 n = LittleLong(in->firstleafbrush);
5098                 c = LittleLong(in->numleafbrushes);
5099                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5100                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5101                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5102                 out->numleafbrushes = c;
5103         }
5104 }
5105
5106 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5107 {
5108         q3dnode_t *in;
5109         mnode_t *out;
5110         int i, j, n, count;
5111
5112         in = (q3dnode_t *)(mod_base + l->fileofs);
5113         if (l->filelen % sizeof(*in))
5114                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5115         count = l->filelen / sizeof(*in);
5116         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5117
5118         loadmodel->brush.data_nodes = out;
5119         loadmodel->brush.num_nodes = count;
5120
5121         for (i = 0;i < count;i++, in++, out++)
5122         {
5123                 out->parent = NULL;
5124                 n = LittleLong(in->planeindex);
5125                 if (n < 0 || n >= loadmodel->brush.num_planes)
5126                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5127                 out->plane = loadmodel->brush.data_planes + n;
5128                 for (j = 0;j < 2;j++)
5129                 {
5130                         n = LittleLong(in->childrenindex[j]);
5131                         if (n >= 0)
5132                         {
5133                                 if (n >= loadmodel->brush.num_nodes)
5134                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5135                                 out->children[j] = loadmodel->brush.data_nodes + n;
5136                         }
5137                         else
5138                         {
5139                                 n = -1 - n;
5140                                 if (n >= loadmodel->brush.num_leafs)
5141                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5142                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5143                         }
5144                 }
5145                 for (j = 0;j < 3;j++)
5146                 {
5147                         // yes the mins/maxs are ints
5148                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5149                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5150                 }
5151         }
5152
5153         // set the parent pointers
5154         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5155 }
5156
5157 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5158 {
5159         q3dlightgrid_t *in;
5160         q3dlightgrid_t *out;
5161         int count;
5162
5163         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5164         if (l->filelen % sizeof(*in))
5165                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5166         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5167         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5168         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5169         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5170         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5171         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5172         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5173         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5174         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5175         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5176         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5177         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5178         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5179         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]);
5180         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]);
5181
5182         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5183         if (l->filelen)
5184         {
5185                 if (l->filelen < count * (int)sizeof(*in))
5186                         Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, count * sizeof(*in), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
5187                 if (l->filelen != count * (int)sizeof(*in))
5188                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i", count * sizeof(*in), l->filelen);
5189                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5190                 loadmodel->brushq3.data_lightgrid = out;
5191                 loadmodel->brushq3.num_lightgrid = count;
5192                 // no swapping or validation necessary
5193                 memcpy(out, in, count * (int)sizeof(*out));
5194         }
5195 }
5196
5197 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5198 {
5199         q3dpvs_t *in;
5200         int totalchains;
5201
5202         if (l->filelen == 0)
5203         {
5204                 int i;
5205                 // unvised maps often have cluster indices even without pvs, so check
5206                 // leafs to find real number of clusters
5207                 loadmodel->brush.num_pvsclusters = 1;
5208                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5209                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5210
5211                 // create clusters
5212                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5213                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5214                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5215                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5216                 return;
5217         }
5218
5219         in = (q3dpvs_t *)(mod_base + l->fileofs);
5220         if (l->filelen < 9)
5221                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5222
5223         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5224         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5225         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5226                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5227         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5228         if (l->filelen < totalchains + (int)sizeof(*in))
5229                 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, totalchains + sizeof(*in), l->filelen);
5230
5231         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5232         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5233 }
5234
5235 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5236 {
5237         int i, j, k, index[3];
5238         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch;
5239         q3dlightgrid_t *a, *s;
5240         if (!model->brushq3.num_lightgrid)
5241         {
5242                 ambientcolor[0] = 1;
5243                 ambientcolor[1] = 1;
5244                 ambientcolor[2] = 1;
5245                 return;
5246         }
5247         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5248         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5249         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5250         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5251         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5252         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5253         index[0] = (int)floor(transformed[0]);
5254         index[1] = (int)floor(transformed[1]);
5255         index[2] = (int)floor(transformed[2]);
5256         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5257         // now lerp the values
5258         VectorClear(diffusenormal);
5259         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5260         for (k = 0;k < 2;k++)
5261         {
5262                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5263                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5264                         continue;
5265                 for (j = 0;j < 2;j++)
5266                 {
5267                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5268                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5269                                 continue;
5270                         for (i = 0;i < 2;i++)
5271                         {
5272                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0])));
5273                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5274                                         continue;
5275                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5276                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5277                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5278                                 pitch = s->diffusepitch * M_PI / 128;
5279                                 yaw = s->diffuseyaw * M_PI / 128;
5280                                 sinpitch = sin(pitch);
5281                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5282                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5283                                 diffusenormal[2] += blend * (cos(pitch));
5284                                 //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)));
5285                         }
5286                 }
5287         }
5288         VectorNormalize(diffusenormal);
5289         //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]);
5290 }
5291
5292 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5293 {
5294         int i;
5295         mleaf_t *leaf;
5296         colbrushf_t *brush;
5297         // find which leaf the point is in
5298         while (node->plane)
5299                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5300         // point trace the brushes
5301         leaf = (mleaf_t *)node;
5302         for (i = 0;i < leaf->numleafbrushes;i++)
5303         {
5304                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5305                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5306                 {
5307                         brush->markframe = markframe;
5308                         Collision_TracePointBrushFloat(trace, point, brush);
5309                 }
5310         }
5311         // can't do point traces on curves (they have no thickness)
5312 }
5313
5314 static void Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace_t *trace, 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)
5315 {
5316         int i, startside, endside;
5317         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5318         mleaf_t *leaf;
5319         msurface_t *surface;
5320         mplane_t *plane;
5321         colbrushf_t *brush;
5322         // walk the tree until we hit a leaf, recursing for any split cases
5323         while (node->plane)
5324         {
5325                 plane = node->plane;
5326                 // axial planes are much more common than non-axial, so an optimized
5327                 // axial case pays off here
5328                 if (plane->type < 3)
5329                 {
5330                         dist1 = start[plane->type] - plane->dist;
5331                         dist2 = end[plane->type] - plane->dist;
5332                 }
5333                 else
5334                 {
5335                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5336                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5337                 }
5338                 startside = dist1 < 0;
5339                 endside = dist2 < 0;
5340                 if (startside == endside)
5341                 {
5342                         // most of the time the line fragment is on one side of the plane
5343                         node = node->children[startside];
5344                 }
5345                 else
5346                 {
5347                         // line crosses node plane, split the line
5348                         dist1 = PlaneDiff(linestart, plane);
5349                         dist2 = PlaneDiff(lineend, plane);
5350                         midfrac = dist1 / (dist1 - dist2);
5351                         VectorLerp(linestart, midfrac, lineend, mid);
5352                         // take the near side first
5353                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5354                         // if we found an impact on the front side, don't waste time
5355                         // exploring the far side
5356                         if (midfrac <= trace->realfraction)
5357                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5358                         return;
5359                 }
5360         }
5361         // hit a leaf
5362         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5363         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5364         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5365         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5366         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5367         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5368         // line trace the brushes
5369         leaf = (mleaf_t *)node;
5370         for (i = 0;i < leaf->numleafbrushes;i++)
5371         {
5372                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5373                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5374                 {
5375                         brush->markframe = markframe;
5376                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5377                 }
5378         }
5379         // can't do point traces on curves (they have no thickness)
5380         if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5381         {
5382                 // line trace the curves
5383                 for (i = 0;i < leaf->numleafsurfaces;i++)
5384                 {
5385                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5386                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5387                         {
5388                                 surface->collisionmarkframe = markframe;
5389                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5390                         }
5391                 }
5392         }
5393 }
5394
5395 static void Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace_t *trace, 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)
5396 {
5397         int i;
5398         int sides;
5399         mleaf_t *leaf;
5400         colbrushf_t *brush;
5401         msurface_t *surface;
5402         mplane_t *plane;
5403         float nodesegmentmins[3], nodesegmentmaxs[3];
5404         // walk the tree until we hit a leaf, recursing for any split cases
5405         while (node->plane)
5406         {
5407                 plane = node->plane;
5408                 // axial planes are much more common than non-axial, so an optimized
5409                 // axial case pays off here
5410                 if (plane->type < 3)
5411                 {
5412                         // this is an axial plane, compare bounding box directly to it and
5413                         // recurse sides accordingly
5414                         // recurse down node sides
5415                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5416                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5417                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5418                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5419                 }
5420                 else
5421                 {
5422                         // this is a non-axial plane, so check if the start and end boxes
5423                         // are both on one side of the plane to handle 'diagonal' cases
5424                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5425                 }
5426                 if (sides == 3)
5427                 {
5428                         // segment crosses plane
5429                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5430                         sides = 2;
5431                 }
5432                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5433                 // in this case we simply pretend the trace hit nothing
5434                 if (sides == 0)
5435                         return; // ERROR: NAN bounding box!
5436                 // take whichever side the segment box is on
5437                 node = node->children[sides - 1];
5438         }
5439         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5440         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5441         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5442         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5443         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5444         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5445         // hit a leaf
5446         leaf = (mleaf_t *)node;
5447         for (i = 0;i < leaf->numleafbrushes;i++)
5448         {
5449                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5450                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5451                 {
5452                         brush->markframe = markframe;
5453                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5454                 }
5455         }
5456         if (mod_q3bsp_curves_collisions.integer)
5457         {
5458                 for (i = 0;i < leaf->numleafsurfaces;i++)
5459                 {
5460                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5461                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5462                         {
5463                                 surface->collisionmarkframe = markframe;
5464                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5465                         }
5466                 }
5467         }
5468 }
5469
5470 static void Mod_Q3BSP_TraceBox(model_t *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
5471 {
5472         int i;
5473         float segmentmins[3], segmentmaxs[3];
5474         static int markframe = 0;
5475         msurface_t *surface;
5476         q3mbrush_t *brush;
5477         memset(trace, 0, sizeof(*trace));
5478         trace->fraction = 1;
5479         trace->realfraction = 1;
5480         trace->hitsupercontentsmask = hitsupercontentsmask;
5481         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5482         {
5483                 if (VectorCompare(start, end))
5484                 {
5485                         // point trace
5486                         if (model->brush.submodel)
5487                         {
5488                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5489                                         if (brush->colbrushf)
5490                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5491                         }
5492                         else
5493                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5494                 }
5495                 else
5496                 {
5497                         // line trace
5498                         segmentmins[0] = min(start[0], end[0]) - 1;
5499                         segmentmins[1] = min(start[1], end[1]) - 1;
5500                         segmentmins[2] = min(start[2], end[2]) - 1;
5501                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5502                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5503                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5504                         if (model->brush.submodel)
5505                         {
5506                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5507                                         if (brush->colbrushf)
5508                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5509                                 if (mod_q3bsp_curves_collisions.integer)
5510                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5511                                                 if (surface->num_collisiontriangles)
5512                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5513                         }
5514                         else
5515                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5516                 }
5517         }
5518         else
5519         {
5520                 // box trace, performed as brush trace
5521                 colbrushf_t *thisbrush_start, *thisbrush_end;
5522                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5523                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5524                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5525                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5526                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5527                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5528                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5529                 VectorAdd(start, boxmins, boxstartmins);
5530                 VectorAdd(start, boxmaxs, boxstartmaxs);
5531                 VectorAdd(end, boxmins, boxendmins);
5532                 VectorAdd(end, boxmaxs, boxendmaxs);
5533                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5534                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5535                 if (model->brush.submodel)
5536                 {
5537                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5538                                 if (brush->colbrushf)
5539                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5540                         if (mod_q3bsp_curves_collisions.integer)
5541                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5542                                         if (surface->num_collisiontriangles)
5543                                                 Collision_TraceBrushTriangleMeshFloat(trace, thisbrush_start, thisbrush_end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5544                 }
5545                 else
5546                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5547         }
5548 }
5549
5550 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5551 {
5552         int supercontents = 0;
5553         if (nativecontents & CONTENTSQ3_SOLID)
5554                 supercontents |= SUPERCONTENTS_SOLID;
5555         if (nativecontents & CONTENTSQ3_WATER)
5556                 supercontents |= SUPERCONTENTS_WATER;
5557         if (nativecontents & CONTENTSQ3_SLIME)
5558                 supercontents |= SUPERCONTENTS_SLIME;
5559         if (nativecontents & CONTENTSQ3_LAVA)
5560                 supercontents |= SUPERCONTENTS_LAVA;
5561         if (nativecontents & CONTENTSQ3_BODY)
5562                 supercontents |= SUPERCONTENTS_BODY;
5563         if (nativecontents & CONTENTSQ3_CORPSE)
5564                 supercontents |= SUPERCONTENTS_CORPSE;
5565         if (nativecontents & CONTENTSQ3_NODROP)
5566                 supercontents |= SUPERCONTENTS_NODROP;
5567         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5568                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5569         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5570                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5571         if (nativecontents & CONTENTSQ3_DONOTENTER)
5572                 supercontents |= SUPERCONTENTS_DONOTENTER;
5573         return supercontents;
5574 }
5575
5576 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5577 {
5578         int nativecontents = 0;
5579         if (supercontents & SUPERCONTENTS_SOLID)
5580                 nativecontents |= CONTENTSQ3_SOLID;
5581         if (supercontents & SUPERCONTENTS_WATER)
5582                 nativecontents |= CONTENTSQ3_WATER;
5583         if (supercontents & SUPERCONTENTS_SLIME)
5584                 nativecontents |= CONTENTSQ3_SLIME;
5585         if (supercontents & SUPERCONTENTS_LAVA)
5586                 nativecontents |= CONTENTSQ3_LAVA;
5587         if (supercontents & SUPERCONTENTS_BODY)
5588                 nativecontents |= CONTENTSQ3_BODY;
5589         if (supercontents & SUPERCONTENTS_CORPSE)
5590                 nativecontents |= CONTENTSQ3_CORPSE;
5591         if (supercontents & SUPERCONTENTS_NODROP)
5592                 nativecontents |= CONTENTSQ3_NODROP;
5593         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5594                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5595         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5596                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5597         if (supercontents & SUPERCONTENTS_DONOTENTER)
5598                 nativecontents |= CONTENTSQ3_DONOTENTER;
5599         return nativecontents;
5600 }
5601
5602 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5603 {
5604         int numleafs;
5605         while (node->plane)
5606         {
5607                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5608                 node = node->children[1];
5609         }
5610         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5611         if (loadmodel->brush.num_leafs < numleafs)
5612                 loadmodel->brush.num_leafs = numleafs;
5613 }
5614
5615 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5616 {
5617         int i, j, numshadowmeshtriangles;
5618         q3dheader_t *header;
5619         float corner[3], yawradius, modelradius;
5620         msurface_t *surface;
5621
5622         mod->type = mod_brushq3;
5623         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5624         mod->numskins = 1;
5625
5626         header = (q3dheader_t *)buffer;
5627
5628         i = LittleLong(header->version);
5629         if (i != Q3BSPVERSION)
5630                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5631         mod->brush.ishlbsp = false;
5632         mod->brush.ismcbsp = false;
5633         if (loadmodel->isworldmodel)
5634         {
5635                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5636                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5637         }
5638
5639         mod->soundfromcenter = true;
5640         mod->TraceBox = Mod_Q3BSP_TraceBox;
5641         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5642         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5643         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5644         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5645         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5646         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5647         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5648         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5649         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5650         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5651         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5652         mod->Draw = R_Q1BSP_Draw;
5653         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5654         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5655         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5656         mod->DrawLight = R_Q1BSP_DrawLight;
5657
5658         mod_base = (unsigned char *)header;
5659
5660         // swap all the lumps
5661         header->ident = LittleLong(header->ident);
5662         header->version = LittleLong(header->version);
5663         for (i = 0;i < Q3HEADER_LUMPS;i++)
5664         {
5665                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5666                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5667         }
5668
5669         mod->brush.qw_md4sum = 0;
5670         mod->brush.qw_md4sum2 = 0;
5671         for (i = 0;i < Q3HEADER_LUMPS;i++)
5672         {
5673                 if (i == Q3LUMP_ENTITIES)
5674                         continue;
5675                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5676                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5677                         continue;
5678                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5679         }
5680
5681         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5682         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5683         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5684         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5685         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5686         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5687         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5688         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5689         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
5690         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5691         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5692         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5693         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5694         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5695         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5696         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5697         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5698         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5699
5700         // the MakePortals code works fine on the q3bsp data as well
5701         Mod_Q1BSP_MakePortals();
5702
5703         // make a single combined shadow mesh to allow optimized shadow volume creation
5704         numshadowmeshtriangles = 0;
5705         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5706         {
5707                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5708                 numshadowmeshtriangles += surface->num_triangles;
5709         }
5710         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5711         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5712                 if (surface->num_triangles > 0)
5713                         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));
5714         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
5715         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5716
5717         loadmodel->brush.num_leafs = 0;
5718         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5719
5720         if (loadmodel->isworldmodel)
5721         {
5722                 // clear out any stale submodels or worldmodels lying around
5723                 // if we did this clear before now, an error might abort loading and
5724                 // leave things in a bad state
5725                 Mod_RemoveStaleWorldModels(loadmodel);
5726         }
5727
5728         mod = loadmodel;
5729         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5730         {
5731                 if (i > 0)
5732                 {
5733                         char name[10];
5734                         // LordHavoc: only register submodels if it is the world
5735                         // (prevents external bsp models from replacing world submodels with
5736                         //  their own)
5737                         if (!loadmodel->isworldmodel)
5738                                 continue;
5739                         // duplicate the basic information
5740                         sprintf(name, "*%i", i);
5741                         mod = Mod_FindName(name);
5742                         *mod = *loadmodel;
5743                         strcpy(mod->name, name);
5744                         // textures and memory belong to the main model
5745                         mod->texturepool = NULL;
5746                         mod->mempool = NULL;
5747                         mod->brush.GetPVS = NULL;
5748                         mod->brush.FatPVS = NULL;
5749                         mod->brush.BoxTouchingPVS = NULL;
5750                         mod->brush.BoxTouchingLeafPVS = NULL;
5751                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5752                         mod->brush.FindBoxClusters = NULL;
5753                         mod->brush.LightPoint = NULL;
5754                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5755                 }
5756                 mod->brush.submodel = i;
5757
5758                 // make the model surface list (used by shadowing/lighting)
5759                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5760                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5761                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5762                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5763                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5764                 for (j = 0;j < mod->nummodelsurfaces;j++)
5765                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5766
5767                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5768                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5769                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5770                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5771                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5772                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5773                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5774                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5775                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5776                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5777                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5778                 mod->yawmins[2] = mod->normalmins[2];
5779                 mod->yawmaxs[2] = mod->normalmaxs[2];
5780                 mod->radius = modelradius;
5781                 mod->radius2 = modelradius * modelradius;
5782
5783                 for (j = 0;j < mod->nummodelsurfaces;j++)
5784                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
5785                                 break;
5786                 if (j < mod->nummodelsurfaces)
5787                         mod->DrawSky = R_Q1BSP_DrawSky;
5788         }
5789 }
5790
5791 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
5792 {
5793         int i = LittleLong(((int *)buffer)[1]);
5794         if (i == Q3BSPVERSION)
5795                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5796         else if (i == Q2BSPVERSION)
5797                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5798         else
5799                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5800 }
5801
5802 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
5803 {
5804         Host_Error("Mod_MAP_Load: not yet implemented");
5805 }
5806