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 extern cvar_t collision_prefernudgedfraction;
 618 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 619 {
 620         // status variables, these don't need to be saved on the stack when
 621         // recursing...  but are because this should be thread-safe
 622         // (note: tracing against a bbox is not thread-safe, yet)
 623         int ret;
 624         mplane_t *plane;
 625         double t1, t2;
 626
 627         // variables that need to be stored on the stack when recursing
 628         dclipnode_t *node;
 629         int side;
 630         double midf, mid[3];
 631
 632         // LordHavoc: a goto!  everyone flee in terror... :)
 633 loc0:
 634         // check for empty
 635         if (num < 0)
 636         {
 637                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 638                 if (!t->trace->startfound)
 639                 {
 640                         t->trace->startfound = true;
 641                         t->trace->startsupercontents |= num;
 642                 }
 643                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 644                         t->trace->inwater = true;
 645                 if (num == 0)
 646                         t->trace->inopen = true;
 647                 if (num & SUPERCONTENTS_SOLID)
 648                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 649                 else if (num & SUPERCONTENTS_SKY)
 650                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 651                 else if (num & SUPERCONTENTS_LAVA)
 652                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 653                 else if (num & SUPERCONTENTS_SLIME)
 654                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 655                 else
 656                         t->trace->hittexture = &mod_q1bsp_texture_water;
 657                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 658                 t->trace->hitsupercontents = num;
 659                 if (num & t->trace->hitsupercontentsmask)
 660                 {
 661                         // if the first leaf is solid, set startsolid
 662                         if (t->trace->allsolid)
 663                                 t->trace->startsolid = true;
 664 #if COLLISIONPARANOID >= 3
 665                         Con_Print("S");
 666 #endif
 667                         return HULLCHECKSTATE_SOLID;
 668                 }
 669                 else
 670                 {
 671                         t->trace->allsolid = false;
 672 #if COLLISIONPARANOID >= 3
 673                         Con_Print("E");
 674 #endif
 675                         return HULLCHECKSTATE_EMPTY;
 676                 }
 677         }
 678
 679         // find the point distances
 680         node = t->hull->clipnodes + num;
 681
 682         plane = t->hull->planes + node->planenum;
 683         if (plane->type < 3)
 684         {
 685                 t1 = p1[plane->type] - plane->dist;
 686                 t2 = p2[plane->type] - plane->dist;
 687         }
 688         else
 689         {
 690                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 691                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 692         }
 693
 694         if (t1 < 0)
 695         {
 696                 if (t2 < 0)
 697                 {
 698 #if COLLISIONPARANOID >= 3
 699                         Con_Print("<");
 700 #endif
 701                         num = node->children[1];
 702                         goto loc0;
 703                 }
 704                 side = 1;
 705         }
 706         else
 707         {
 708                 if (t2 >= 0)
 709                 {
 710 #if COLLISIONPARANOID >= 3
 711                         Con_Print(">");
 712 #endif
 713                         num = node->children[0];
 714                         goto loc0;
 715                 }
 716                 side = 0;
 717         }
 718
 719         // the line intersects, find intersection point
 720         // LordHavoc: this uses the original trace for maximum accuracy
 721 #if COLLISIONPARANOID >= 3
 722         Con_Print("M");
 723 #endif
 724         if (plane->type < 3)
 725         {
 726                 t1 = t->start[plane->type] - plane->dist;
 727                 t2 = t->end[plane->type] - plane->dist;
 728         }
 729         else
 730         {
 731                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 732                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 733         }
 734
 735         midf = t1 / (t1 - t2);
 736         midf = bound(p1f, midf, p2f);
 737         VectorMA(t->start, midf, t->dist, mid);
 738
 739         // recurse both sides, front side first
 740         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 741         // if this side is not empty, return what it is (solid or done)
 742         if (ret != HULLCHECKSTATE_EMPTY)
 743                 return ret;
 744
 745         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 746         // if other side is not solid, return what it is (empty or done)
 747         if (ret != HULLCHECKSTATE_SOLID)
 748                 return ret;
 749
 750         // front is air and back is solid, this is the impact point...
 751         if (side)
 752         {
 753                 t->trace->plane.dist = -plane->dist;
 754                 VectorNegate (plane->normal, t->trace->plane.normal);
 755         }
 756         else
 757         {
 758                 t->trace->plane.dist = plane->dist;
 759                 VectorCopy (plane->normal, t->trace->plane.normal);
 760         }
 761
 762         // calculate the true fraction
 763         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 764         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 765         midf = t1 / (t1 - t2);
 766         t->trace->realfraction = bound(0, midf, 1);
 767
 768         // calculate the return fraction which is nudged off the surface a bit
 769         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 770         t->trace->fraction = bound(0, midf, 1);
 771
 772         if (collision_prefernudgedfraction.integer)
 773                 t->trace->realfraction = t->trace->fraction;
 774
 775 #if COLLISIONPARANOID >= 3
 776         Con_Print("D");
 777 #endif
 778         return HULLCHECKSTATE_DONE;
 779 }
 780
 781 //#if COLLISIONPARANOID < 2
 782 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 783 {
 784         while (num >= 0)
 785                 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];
 786         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 787         t->trace->startsupercontents |= num;
 788         if (num & SUPERCONTENTS_LIQUIDSMASK)
 789                 t->trace->inwater = true;
 790         if (num == 0)
 791                 t->trace->inopen = true;
 792         if (num & t->trace->hitsupercontentsmask)
 793         {
 794                 t->trace->allsolid = t->trace->startsolid = true;
 795                 return HULLCHECKSTATE_SOLID;
 796         }
 797         else
 798         {
 799                 t->trace->allsolid = t->trace->startsolid = false;
 800                 return HULLCHECKSTATE_EMPTY;
 801         }
 802 }
 803 //#endif
 804
 805 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)
 806 {
 807         // this function currently only supports same size start and end
 808         double boxsize[3];
 809         RecursiveHullCheckTraceInfo_t rhc;
 810
 811         memset(&rhc, 0, sizeof(rhc));
 812         memset(trace, 0, sizeof(trace_t));
 813         rhc.trace = trace;
 814         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 815         rhc.trace->fraction = 1;
 816         rhc.trace->realfraction = 1;
 817         rhc.trace->allsolid = true;
 818         VectorSubtract(boxmaxs, boxmins, boxsize);
 819         if (boxsize[0] < 3)
 820                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 821         else if (model->brush.ismcbsp)
 822         {
 823                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 824                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 825                 else
 826                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 827         }
 828         else if (model->brush.ishlbsp)
 829         {
 830                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 831                 // minor float precision errors from the box being transformed around
 832                 if (boxsize[0] < 32.1)
 833                 {
 834                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 835                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 836                         else
 837                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 838                 }
 839                 else
 840                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 841         }
 842         else
 843         {
 844                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 845                 // minor float precision errors from the box being transformed around
 846                 if (boxsize[0] < 32.1)
 847                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 848                 else
 849                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 850         }
 851         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 852         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 853         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 854 #if COLLISIONPARANOID >= 2
 855         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]);
 856         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 857         {
 858
 859                 double test[3];
 860                 trace_t testtrace;
 861                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 862                 memset(&testtrace, 0, sizeof(trace_t));
 863                 rhc.trace = &testtrace;
 864                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 865                 rhc.trace->fraction = 1;
 866                 rhc.trace->realfraction = 1;
 867                 rhc.trace->allsolid = true;
 868                 VectorCopy(test, rhc.start);
 869                 VectorCopy(test, rhc.end);
 870                 VectorClear(rhc.dist);
 871                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 872                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 873                 if (!trace->startsolid && testtrace.startsolid)
 874                         Con_Printf(" - ended in solid!\n");
 875         }
 876         Con_Print("\n");
 877 #else
 878         if (VectorLength2(rhc.dist))
 879                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 880         else
 881                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 882 #endif
 883 }
 884
 885 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)
 886 {
 887 #if 1
 888         colbrushf_t cbox;
 889         colplanef_t cbox_planes[6];
 890         cbox.supercontents = boxsupercontents;
 891         cbox.numplanes = 6;
 892         cbox.numpoints = 0;
 893         cbox.numtriangles = 0;
 894         cbox.planes = cbox_planes;
 895         cbox.points = NULL;
 896         cbox.elements = NULL;
 897         cbox.markframe = 0;
 898         cbox.mins[0] = 0;
 899         cbox.mins[1] = 0;
 900         cbox.mins[2] = 0;
 901         cbox.maxs[0] = 0;
 902         cbox.maxs[1] = 0;
 903         cbox.maxs[2] = 0;
 904         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];
 905         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];
 906         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];
 907         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];
 908         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];
 909         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];
 910         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 911         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 912         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 913         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 914         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 915         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 916         memset(trace, 0, sizeof(trace_t));
 917         trace->hitsupercontentsmask = hitsupercontentsmask;
 918         trace->fraction = 1;
 919         trace->realfraction = 1;
 920         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 921 #else
 922         RecursiveHullCheckTraceInfo_t rhc;
 923         static hull_t box_hull;
 924         static dclipnode_t box_clipnodes[6];
 925         static mplane_t box_planes[6];
 926         // fill in a default trace
 927         memset(&rhc, 0, sizeof(rhc));
 928         memset(trace, 0, sizeof(trace_t));
 929         //To keep everything totally uniform, bounding boxes are turned into small
 930         //BSP trees instead of being compared directly.
 931         // create a temp hull from bounding box sizes
 932         box_planes[0].dist = cmaxs[0] - mins[0];
 933         box_planes[1].dist = cmins[0] - maxs[0];
 934         box_planes[2].dist = cmaxs[1] - mins[1];
 935         box_planes[3].dist = cmins[1] - maxs[1];
 936         box_planes[4].dist = cmaxs[2] - mins[2];
 937         box_planes[5].dist = cmins[2] - maxs[2];
 938 #if COLLISIONPARANOID >= 3
 939         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]);
 940 #endif
 941
 942         if (box_hull.clipnodes == NULL)
 943         {
 944                 int i, side;
 945
 946                 //Set up the planes and clipnodes so that the six floats of a bounding box
 947                 //can just be stored out and get a proper hull_t structure.
 948
 949                 box_hull.clipnodes = box_clipnodes;
 950                 box_hull.planes = box_planes;
 951                 box_hull.firstclipnode = 0;
 952                 box_hull.lastclipnode = 5;
 953
 954                 for (i = 0;i < 6;i++)
 955                 {
 956                         box_clipnodes[i].planenum = i;
 957
 958                         side = i&1;
 959
 960                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 961                         if (i != 5)
 962                                 box_clipnodes[i].children[side^1] = i + 1;
 963                         else
 964                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 965
 966                         box_planes[i].type = i>>1;
 967                         box_planes[i].normal[i>>1] = 1;
 968                 }
 969         }
 970
 971         // trace a line through the generated clipping hull
 972         //rhc.boxsupercontents = boxsupercontents;
 973         rhc.hull = &box_hull;
 974         rhc.trace = trace;
 975         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 976         rhc.trace->fraction = 1;
 977         rhc.trace->realfraction = 1;
 978         rhc.trace->allsolid = true;
 979         VectorCopy(start, rhc.start);
 980         VectorCopy(end, rhc.end);
 981         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 982         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 983         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 984         if (rhc.trace->startsupercontents)
 985                 rhc.trace->startsupercontents = boxsupercontents;
 986 #endif
 987 }
 988
 989 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)
 990 {
 991         int side;
 992         float front, back;
 993         float mid, distz = endz - startz;
 994
 995 loc0:
 996         if (!node->plane)
 997                 return false;           // didn't hit anything
 998
 999         switch (node->plane->type)
1000         {
1001         case PLANE_X:
1002                 node = node->children[x < node->plane->dist];
1003                 goto loc0;
1004         case PLANE_Y:
1005                 node = node->children[y < node->plane->dist];
1006                 goto loc0;
1007         case PLANE_Z:
1008                 side = startz < node->plane->dist;
1009                 if ((endz < node->plane->dist) == side)
1010                 {
1011                         node = node->children[side];
1012                         goto loc0;
1013                 }
1014                 // found an intersection
1015                 mid = node->plane->dist;
1016                 break;
1017         default:
1018                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1019                 front += startz * node->plane->normal[2];
1020                 back += endz * node->plane->normal[2];
1021                 side = front < node->plane->dist;
1022                 if ((back < node->plane->dist) == side)
1023                 {
1024                         node = node->children[side];
1025                         goto loc0;
1026                 }
1027                 // found an intersection
1028                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1029                 break;
1030         }
1031
1032         // go down front side
1033         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1034                 return true;    // hit something
1035         else
1036         {
1037                 // check for impact on this node
1038                 if (node->numsurfaces)
1039                 {
1040                         int i, ds, dt;
1041                         msurface_t *surface;
1042
1043                         surface = model->data_surfaces + node->firstsurface;
1044                         for (i = 0;i < node->numsurfaces;i++, surface++)
1045                         {
1046                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1047                                         continue;       // no lightmaps
1048
1049                                 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];
1050                                 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];
1051
1052                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1053                                 {
1054                                         unsigned char *lightmap;
1055                                         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;
1056                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1057                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1058                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1059                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1060
1061                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1062
1063                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1064                                         {
1065                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1066                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1067                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1068                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1069                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1070                                                 lightmap += size3;
1071                                         }
1072
1073 /*
1074 LordHavoc: here's the readable version of the interpolation
1075 code, not quite as easy for the compiler to optimize...
1076
1077 dsfrac is the X position in the lightmap pixel, * 16
1078 dtfrac is the Y position in the lightmap pixel, * 16
1079 r00 is top left corner, r01 is top right corner
1080 r10 is bottom left corner, r11 is bottom right corner
1081 g and b are the same layout.
1082 r0 and r1 are the top and bottom intermediate results
1083
1084 first we interpolate the top two points, to get the top
1085 edge sample
1086
1087         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1088         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1089         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1090
1091 then we interpolate the bottom two points, to get the
1092 bottom edge sample
1093
1094         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1095         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1096         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1097
1098 then we interpolate the top and bottom samples to get the
1099 middle sample (the one which was requested)
1100
1101         r = (((r1-r0) * dtfrac) >> 4) + r0;
1102         g = (((g1-g0) * dtfrac) >> 4) + g0;
1103         b = (((b1-b0) * dtfrac) >> 4) + b0;
1104 */
1105
1106                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1107                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1108                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1109                                         return true; // success
1110                                 }
1111                         }
1112                 }
1113
1114                 // go down back side
1115                 node = node->children[side ^ 1];
1116                 startz = mid;
1117                 distz = endz - startz;
1118                 goto loc0;
1119         }
1120 }
1121
1122 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1123 {
1124         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);
1125         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1126         VectorSet(diffusenormal, 0, 0, 1);
1127 }
1128
1129 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1130 {
1131         int c;
1132         unsigned char *outstart = out;
1133         while (out < outend)
1134         {
1135                 if (in == inend)
1136                 {
1137                         Con_Printf("Mod_Q1BSP_DecompressVis: input underrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1138                         return;
1139                 }
1140                 c = *in++;
1141                 if (c)
1142                         *out++ = c;
1143                 else
1144                 {
1145                         if (in == inend)
1146                         {
1147                                 Con_Printf("Mod_Q1BSP_DecompressVis: input underrun (during zero-run) on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1148                                 return;
1149                         }
1150                         for (c = *in++;c > 0;c--)
1151                         {
1152                                 if (out == outend)
1153                                 {
1154                                         Con_Printf("Mod_Q1BSP_DecompressVis: output overrun on model \"%s\" (decompressed %i of %i output bytes)\n", loadmodel->name, (int)(out - outstart), (int)(outend - outstart));
1155                                         return;
1156                                 }
1157                                 *out++ = 0;
1158                         }
1159                 }
1160         }
1161 }
1162
1163 /*
1164 =============
1165 R_Q1BSP_LoadSplitSky
1166
1167 A sky texture is 256*128, with the right side being a masked overlay
1168 ==============
1169 */
1170 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1171 {
1172         int i, j;
1173         unsigned solidpixels[128*128], alphapixels[128*128];
1174
1175         // if sky isn't the right size, just use it as a solid layer
1176         if (width != 256 || height != 128)
1177         {
1178                 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);
1179                 loadmodel->brush.alphaskytexture = NULL;
1180                 return;
1181         }
1182
1183         if (bytesperpixel == 4)
1184         {
1185                 for (i = 0;i < 128;i++)
1186                 {
1187                         for (j = 0;j < 128;j++)
1188                         {
1189                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1190                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1191                         }
1192                 }
1193         }
1194         else
1195         {
1196                 // make an average value for the back to avoid
1197                 // a fringe on the top level
1198                 int p, r, g, b;
1199                 union
1200                 {
1201                         unsigned int i;
1202                         unsigned char b[4];
1203                 }
1204                 rgba;
1205                 r = g = b = 0;
1206                 for (i = 0;i < 128;i++)
1207                 {
1208                         for (j = 0;j < 128;j++)
1209                         {
1210                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1211                                 r += rgba.b[0];
1212                                 g += rgba.b[1];
1213                                 b += rgba.b[2];
1214                         }
1215                 }
1216                 rgba.b[0] = r/(128*128);
1217                 rgba.b[1] = g/(128*128);
1218                 rgba.b[2] = b/(128*128);
1219                 rgba.b[3] = 0;
1220                 for (i = 0;i < 128;i++)
1221                 {
1222                         for (j = 0;j < 128;j++)
1223                         {
1224                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1225                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1226                         }
1227                 }
1228         }
1229
1230         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1231         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1232 }
1233
1234 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1235 {
1236         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1237         miptex_t *dmiptex;
1238         texture_t *tx, *tx2, *anims[10], *altanims[10];
1239         dmiptexlump_t *m;
1240         unsigned char *data, *mtdata;
1241         const char *s;
1242         char mapname[MAX_QPATH], name[MAX_QPATH];
1243
1244         loadmodel->data_textures = NULL;
1245
1246         // add two slots for notexture walls and notexture liquids
1247         if (l->filelen)
1248         {
1249                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1250                 m->nummiptex = LittleLong (m->nummiptex);
1251                 loadmodel->num_textures = m->nummiptex + 2;
1252         }
1253         else
1254         {
1255                 m = NULL;
1256                 loadmodel->num_textures = 2;
1257         }
1258
1259         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1260
1261         // fill out all slots with notexture
1262         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1263         {
1264                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1265                 tx->width = 16;
1266                 tx->height = 16;
1267                 tx->numskinframes = 1;
1268                 tx->skinframerate = 1;
1269                 tx->currentskinframe = tx->skinframes;
1270                 tx->skinframes[0].base = r_texture_notexture;
1271                 tx->basematerialflags = 0;
1272                 if (i == loadmodel->num_textures - 1)
1273                 {
1274                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1275                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1276                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1277                 }
1278                 else
1279                 {
1280                         tx->basematerialflags |= MATERIALFLAG_WALL;
1281                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1282                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1283                 }
1284                 tx->currentframe = tx;
1285         }
1286
1287         if (!m)
1288                 return;
1289
1290         s = loadmodel->name;
1291         if (!strncasecmp(s, "maps/", 5))
1292                 s += 5;
1293         FS_StripExtension(s, mapname, sizeof(mapname));
1294
1295         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1296         dofs = m->dataofs;
1297         // LordHavoc: mostly rewritten map texture loader
1298         for (i = 0;i < m->nummiptex;i++)
1299         {
1300                 dofs[i] = LittleLong(dofs[i]);
1301                 if (dofs[i] == -1 || r_nosurftextures.integer)
1302                         continue;
1303                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1304
1305                 // make sure name is no more than 15 characters
1306                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1307                         name[j] = dmiptex->name[j];
1308                 name[j] = 0;
1309
1310                 mtwidth = LittleLong(dmiptex->width);
1311                 mtheight = LittleLong(dmiptex->height);
1312                 mtdata = NULL;
1313                 j = LittleLong(dmiptex->offsets[0]);
1314                 if (j)
1315                 {
1316                         // texture included
1317                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1318                         {
1319                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1320                                 continue;
1321                         }
1322                         mtdata = (unsigned char *)dmiptex + j;
1323                 }
1324
1325                 if ((mtwidth & 15) || (mtheight & 15))
1326                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1327
1328                 // LordHavoc: force all names to lowercase
1329                 for (j = 0;name[j];j++)
1330                         if (name[j] >= 'A' && name[j] <= 'Z')
1331                                 name[j] += 'a' - 'A';
1332
1333                 tx = loadmodel->data_textures + i;
1334                 strlcpy(tx->name, name, sizeof(tx->name));
1335                 tx->width = mtwidth;
1336                 tx->height = mtheight;
1337
1338                 if (!tx->name[0])
1339                 {
1340                         sprintf(tx->name, "unnamed%i", i);
1341                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1342                 }
1343
1344                 if (cls.state != ca_dedicated)
1345                 {
1346                         // LordHavoc: HL sky textures are entirely different than quake
1347                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1348                         {
1349                                 if (loadmodel->isworldmodel)
1350                                 {
1351                                         data = loadimagepixels(tx->name, false, 0, 0);
1352                                         if (data)
1353                                         {
1354                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1355                                                 Mem_Free(data);
1356                                         }
1357                                         else if (mtdata != NULL)
1358                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1359                                 }
1360                         }
1361                         else
1362                         {
1363                                 if (!Mod_LoadSkinFrame(&tx->skinframes[0], gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true)
1364                                  && !Mod_LoadSkinFrame(&tx->skinframes[0], gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
1365                                 {
1366                                         // did not find external texture, load it from the bsp or wad3
1367                                         if (loadmodel->brush.ishlbsp)
1368                                         {
1369                                                 // internal texture overrides wad
1370                                                 unsigned char *pixels, *freepixels;
1371                                                 pixels = freepixels = NULL;
1372                                                 if (mtdata)
1373                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1374                                                 if (pixels == NULL)
1375                                                         pixels = freepixels = W_GetTexture(tx->name);
1376                                                 if (pixels != NULL)
1377                                                 {
1378                                                         tx->width = image_width;
1379                                                         tx->height = image_height;
1380                                                         Mod_LoadSkinFrame_Internal(&tx->skinframes[0], tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, false, pixels, image_width, image_height, 32, NULL, NULL);
1381                                                 }
1382                                                 if (freepixels)
1383                                                         Mem_Free(freepixels);
1384                                         }
1385                                         else if (mtdata) // texture included
1386                                                 Mod_LoadSkinFrame_Internal(&tx->skinframes[0], tx->name, TEXF_MIPMAP | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1387                                 }
1388                         }
1389                         if (tx->skinframes[0].base == NULL)
1390                         {
1391                                 // no texture found
1392                                 tx->width = 16;
1393                                 tx->height = 16;
1394                                 tx->skinframes[0].base = r_texture_notexture;
1395                         }
1396                 }
1397
1398                 tx->basematerialflags = 0;
1399                 if (tx->name[0] == '*')
1400                 {
1401                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1402                         if (strncmp(tx->name,"*lava",5)
1403                          && strncmp(tx->name,"*teleport",9)
1404                          && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1405                                 tx->basematerialflags |= MATERIALFLAG_WATERALPHA;
1406                         if (!strncmp(tx->name, "*lava", 5))
1407                         {
1408                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1409                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1410                         }
1411                         else if (!strncmp(tx->name, "*slime", 6))
1412                         {
1413                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1414                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1415                         }
1416                         else
1417                         {
1418                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1419                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1420                         }
1421                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1422                 }
1423                 else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
1424                 {
1425                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1426                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1427                         tx->basematerialflags |= MATERIALFLAG_SKY;
1428                 }
1429                 else
1430                 {
1431                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1432                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1433                         tx->basematerialflags |= MATERIALFLAG_WALL;
1434                 }
1435                 if (tx->skinframes[0].fog)
1436                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
1437
1438                 // start out with no animation
1439                 tx->currentframe = tx;
1440         }
1441
1442         // sequence the animations
1443         for (i = 0;i < m->nummiptex;i++)
1444         {
1445                 tx = loadmodel->data_textures + i;
1446                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1447                         continue;
1448                 if (tx->anim_total[0] || tx->anim_total[1])
1449                         continue;       // already sequenced
1450
1451                 // find the number of frames in the animation
1452                 memset(anims, 0, sizeof(anims));
1453                 memset(altanims, 0, sizeof(altanims));
1454
1455                 for (j = i;j < m->nummiptex;j++)
1456                 {
1457                         tx2 = loadmodel->data_textures + j;
1458                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1459                                 continue;
1460
1461                         num = tx2->name[1];
1462                         if (num >= '0' && num <= '9')
1463                                 anims[num - '0'] = tx2;
1464                         else if (num >= 'a' && num <= 'j')
1465                                 altanims[num - 'a'] = tx2;
1466                         else
1467                                 Con_Printf("Bad animating texture %s\n", tx->name);
1468                 }
1469
1470                 max = altmax = 0;
1471                 for (j = 0;j < 10;j++)
1472                 {
1473                         if (anims[j])
1474                                 max = j + 1;
1475                         if (altanims[j])
1476                                 altmax = j + 1;
1477                 }
1478                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1479
1480                 incomplete = false;
1481                 for (j = 0;j < max;j++)
1482                 {
1483                         if (!anims[j])
1484                         {
1485                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1486                                 incomplete = true;
1487                         }
1488                 }
1489                 for (j = 0;j < altmax;j++)
1490                 {
1491                         if (!altanims[j])
1492                         {
1493                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1494                                 incomplete = true;
1495                         }
1496                 }
1497                 if (incomplete)
1498                         continue;
1499
1500                 if (altmax < 1)
1501                 {
1502                         // if there is no alternate animation, duplicate the primary
1503                         // animation into the alternate
1504                         altmax = max;
1505                         for (k = 0;k < 10;k++)
1506                                 altanims[k] = anims[k];
1507                 }
1508
1509                 // link together the primary animation
1510                 for (j = 0;j < max;j++)
1511                 {
1512                         tx2 = anims[j];
1513                         tx2->animated = true;
1514                         tx2->anim_total[0] = max;
1515                         tx2->anim_total[1] = altmax;
1516                         for (k = 0;k < 10;k++)
1517                         {
1518                                 tx2->anim_frames[0][k] = anims[k];
1519                                 tx2->anim_frames[1][k] = altanims[k];
1520                         }
1521                 }
1522
1523                 // if there really is an alternate anim...
1524                 if (anims[0] != altanims[0])
1525                 {
1526                         // link together the alternate animation
1527                         for (j = 0;j < altmax;j++)
1528                         {
1529                                 tx2 = altanims[j];
1530                                 tx2->animated = true;
1531                                 // the primary/alternate are reversed here
1532                                 tx2->anim_total[0] = altmax;
1533                                 tx2->anim_total[1] = max;
1534                                 for (k = 0;k < 10;k++)
1535                                 {
1536                                         tx2->anim_frames[0][k] = altanims[k];
1537                                         tx2->anim_frames[1][k] = anims[k];
1538                                 }
1539                         }
1540                 }
1541         }
1542 }
1543
1544 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1545 {
1546         int i;
1547         unsigned char *in, *out, *data, d;
1548         char litfilename[MAX_QPATH];
1549         char dlitfilename[MAX_QPATH];
1550         fs_offset_t filesize;
1551         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1552         {
1553                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1554                 for (i=0; i<l->filelen; i++)
1555                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1556         }
1557         else if (loadmodel->brush.ismcbsp)
1558         {
1559                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1560                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1561         }
1562         else // LordHavoc: bsp version 29 (normal white lighting)
1563         {
1564                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1565                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1566                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1567                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1568                 strlcat (litfilename, ".lit", sizeof (litfilename));
1569                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1570                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1571                 if (data)
1572                 {
1573                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1574                         {
1575                                 i = LittleLong(((int *)data)[1]);
1576                                 if (i == 1)
1577                                 {
1578                                         Con_DPrintf("loaded %s\n", litfilename);
1579                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1580                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1581                                         Mem_Free(data);
1582                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1583                                         if (data)
1584                                         {
1585                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1586                                                 {
1587                                                         i = LittleLong(((int *)data)[1]);
1588                                                         if (i == 1)
1589                                                         {
1590                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1591                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1592                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1593                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1594                                                                 loadmodel->brushq3.deluxemapping = true;
1595                                                         }
1596                                                 }
1597                                                 Mem_Free(data);
1598                                                 data = NULL;
1599                                         }
1600                                         return;
1601                                 }
1602                                 else
1603                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1604                         }
1605                         else if (filesize == 8)
1606                                 Con_Print("Empty .lit file, ignoring\n");
1607                         else
1608                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1609                         if (data)
1610                         {
1611                                 Mem_Free(data);
1612                                 data = NULL;
1613                         }
1614                 }
1615                 // LordHavoc: oh well, expand the white lighting data
1616                 if (!l->filelen)
1617                         return;
1618                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1619                 in = mod_base + l->fileofs;
1620                 out = loadmodel->brushq1.lightdata;
1621                 for (i = 0;i < l->filelen;i++)
1622                 {
1623                         d = *in++;
1624                         *out++ = d;
1625                         *out++ = d;
1626                         *out++ = d;
1627                 }
1628         }
1629 }
1630
1631 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1632 {
1633         loadmodel->brushq1.num_compressedpvs = 0;
1634         loadmodel->brushq1.data_compressedpvs = NULL;
1635         if (!l->filelen)
1636                 return;
1637         loadmodel->brushq1.num_compressedpvs = l->filelen;
1638         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1639         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1640 }
1641
1642 // used only for HalfLife maps
1643 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1644 {
1645         char key[128], value[4096];
1646         char wadname[128];
1647         int i, j, k;
1648         if (!data)
1649                 return;
1650         if (!COM_ParseTokenConsole(&data))
1651                 return; // error
1652         if (com_token[0] != '{')
1653                 return; // error
1654         while (1)
1655         {
1656                 if (!COM_ParseTokenConsole(&data))
1657                         return; // error
1658                 if (com_token[0] == '}')
1659                         break; // end of worldspawn
1660                 if (com_token[0] == '_')
1661                         strlcpy(key, com_token + 1, sizeof(key));
1662                 else
1663                         strlcpy(key, com_token, sizeof(key));
1664                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1665                         key[strlen(key)-1] = 0;
1666                 if (!COM_ParseTokenConsole(&data))
1667                         return; // error
1668                 dpsnprintf(value, sizeof(value), "%s", com_token);
1669                 if (!strcmp("wad", key)) // for HalfLife maps
1670                 {
1671                         if (loadmodel->brush.ishlbsp)
1672                         {
1673                                 j = 0;
1674                                 for (i = 0;i < (int)sizeof(value);i++)
1675                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1676                                                 break;
1677                                 if (value[i])
1678                                 {
1679                                         for (;i < (int)sizeof(value);i++)
1680                                         {
1681                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1682                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1683                                                         j = i+1;
1684                                                 else if (value[i] == ';' || value[i] == 0)
1685                                                 {
1686                                                         k = value[i];
1687                                                         value[i] = 0;
1688                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1689                                                         strlcat(wadname, &value[j], sizeof(wadname));
1690                                                         W_LoadTextureWadFile(wadname, false);
1691                                                         j = i+1;
1692                                                         if (!k)
1693                                                                 break;
1694                                                 }
1695                                         }
1696                                 }
1697                         }
1698                 }
1699         }
1700 }
1701
1702 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1703 {
1704         loadmodel->brush.entities = NULL;
1705         if (!l->filelen)
1706                 return;
1707         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1708         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1709         if (loadmodel->brush.ishlbsp)
1710                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1711 }
1712
1713
1714 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1715 {
1716         dvertex_t       *in;
1717         mvertex_t       *out;
1718         int                     i, count;
1719
1720         in = (dvertex_t *)(mod_base + l->fileofs);
1721         if (l->filelen % sizeof(*in))
1722                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1723         count = l->filelen / sizeof(*in);
1724         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1725
1726         loadmodel->brushq1.vertexes = out;
1727         loadmodel->brushq1.numvertexes = count;
1728
1729         for ( i=0 ; i<count ; i++, in++, out++)
1730         {
1731                 out->position[0] = LittleFloat(in->point[0]);
1732                 out->position[1] = LittleFloat(in->point[1]);
1733                 out->position[2] = LittleFloat(in->point[2]);
1734         }
1735 }
1736
1737 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1738 // can be used for this
1739 // REMOVEME
1740 int SB_ReadInt (unsigned char **buffer)
1741 {
1742         int     i;
1743         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1744         (*buffer) += 4;
1745         return i;
1746 }
1747
1748 // REMOVEME
1749 float SB_ReadFloat (unsigned char **buffer)
1750 {
1751         union
1752         {
1753                 int             i;
1754                 float   f;
1755         } u;
1756
1757         u.i = SB_ReadInt (buffer);
1758         return u.f;
1759 }
1760
1761 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1762 {
1763         unsigned char           *index;
1764         dmodel_t        *out;
1765         int                     i, j, count;
1766
1767         index = (unsigned char *)(mod_base + l->fileofs);
1768         if (l->filelen % (48+4*hullinfo->filehulls))
1769                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1770
1771         count = l->filelen / (48+4*hullinfo->filehulls);
1772         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1773
1774         loadmodel->brushq1.submodels = out;
1775         loadmodel->brush.numsubmodels = count;
1776
1777         for (i = 0; i < count; i++, out++)
1778         {
1779         // spread out the mins / maxs by a pixel
1780                 out->mins[0] = SB_ReadFloat (&index) - 1;
1781                 out->mins[1] = SB_ReadFloat (&index) - 1;
1782                 out->mins[2] = SB_ReadFloat (&index) - 1;
1783                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1784                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1785                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1786                 out->origin[0] = SB_ReadFloat (&index);
1787                 out->origin[1] = SB_ReadFloat (&index);
1788                 out->origin[2] = SB_ReadFloat (&index);
1789                 for (j = 0; j < hullinfo->filehulls; j++)
1790                         out->headnode[j] = SB_ReadInt (&index);
1791                 out->visleafs = SB_ReadInt (&index);
1792                 out->firstface = SB_ReadInt (&index);
1793                 out->numfaces = SB_ReadInt (&index);
1794         }
1795 }
1796
1797 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1798 {
1799         dedge_t *in;
1800         medge_t *out;
1801         int     i, count;
1802
1803         in = (dedge_t *)(mod_base + l->fileofs);
1804         if (l->filelen % sizeof(*in))
1805                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1806         count = l->filelen / sizeof(*in);
1807         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1808
1809         loadmodel->brushq1.edges = out;
1810         loadmodel->brushq1.numedges = count;
1811
1812         for ( i=0 ; i<count ; i++, in++, out++)
1813         {
1814                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1815                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1816                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1817                 {
1818                         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);
1819                         out->v[0] = 0;
1820                         out->v[1] = 0;
1821                 }
1822         }
1823 }
1824
1825 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1826 {
1827         texinfo_t *in;
1828         mtexinfo_t *out;
1829         int i, j, k, count, miptex;
1830
1831         in = (texinfo_t *)(mod_base + l->fileofs);
1832         if (l->filelen % sizeof(*in))
1833                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1834         count = l->filelen / sizeof(*in);
1835         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1836
1837         loadmodel->brushq1.texinfo = out;
1838         loadmodel->brushq1.numtexinfo = count;
1839
1840         for (i = 0;i < count;i++, in++, out++)
1841         {
1842                 for (k = 0;k < 2;k++)
1843                         for (j = 0;j < 4;j++)
1844                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1845
1846                 miptex = LittleLong(in->miptex);
1847                 out->flags = LittleLong(in->flags);
1848
1849                 out->texture = NULL;
1850                 if (loadmodel->data_textures)
1851                 {
1852                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1853                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1854                         else
1855                                 out->texture = loadmodel->data_textures + miptex;
1856                 }
1857                 if (out->flags & TEX_SPECIAL)
1858                 {
1859                         // if texture chosen is NULL or the shader needs a lightmap,
1860                         // force to notexture water shader
1861                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1862                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1863                 }
1864                 else
1865                 {
1866                         // if texture chosen is NULL, force to notexture
1867                         if (out->texture == NULL)
1868                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1869                 }
1870         }
1871 }
1872
1873 #if 0
1874 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1875 {
1876         int             i, j;
1877         float   *v;
1878
1879         mins[0] = mins[1] = mins[2] = 9999;
1880         maxs[0] = maxs[1] = maxs[2] = -9999;
1881         v = verts;
1882         for (i = 0;i < numverts;i++)
1883         {
1884                 for (j = 0;j < 3;j++, v++)
1885                 {
1886                         if (*v < mins[j])
1887                                 mins[j] = *v;
1888                         if (*v > maxs[j])
1889                                 maxs[j] = *v;
1890                 }
1891         }
1892 }
1893
1894 #define MAX_SUBDIVPOLYTRIANGLES 4096
1895 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1896
1897 static int subdivpolyverts, subdivpolytriangles;
1898 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
1899 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
1900
1901 static int subdivpolylookupvert(vec3_t v)
1902 {
1903         int i;
1904         for (i = 0;i < subdivpolyverts;i++)
1905                 if (subdivpolyvert[i][0] == v[0]
1906                  && subdivpolyvert[i][1] == v[1]
1907                  && subdivpolyvert[i][2] == v[2])
1908                         return i;
1909         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
1910                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
1911         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
1912         return subdivpolyverts++;
1913 }
1914
1915 static void SubdividePolygon(int numverts, float *verts)
1916 {
1917         int             i, i1, i2, i3, f, b, c, p;
1918         vec3_t  mins, maxs, front[256], back[256];
1919         float   m, *pv, *cv, dist[256], frac;
1920
1921         if (numverts > 250)
1922                 Host_Error("SubdividePolygon: ran out of verts in buffer");
1923
1924         BoundPoly(numverts, verts, mins, maxs);
1925
1926         for (i = 0;i < 3;i++)
1927         {
1928                 m = (mins[i] + maxs[i]) * 0.5;
1929                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
1930                 if (maxs[i] - m < 8)
1931                         continue;
1932                 if (m - mins[i] < 8)
1933                         continue;
1934
1935                 // cut it
1936                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
1937                         dist[c] = cv[i] - m;
1938
1939                 f = b = 0;
1940                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
1941                 {
1942                         if (dist[p] >= 0)
1943                         {
1944                                 VectorCopy(pv, front[f]);
1945                                 f++;
1946                         }
1947                         if (dist[p] <= 0)
1948                         {
1949                                 VectorCopy(pv, back[b]);
1950                                 b++;
1951                         }
1952                         if (dist[p] == 0 || dist[c] == 0)
1953                                 continue;
1954                         if ((dist[p] > 0) != (dist[c] > 0) )
1955                         {
1956                                 // clip point
1957                                 frac = dist[p] / (dist[p] - dist[c]);
1958                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
1959                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
1960                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
1961                                 f++;
1962                                 b++;
1963                         }
1964                 }
1965
1966                 SubdividePolygon(f, front[0]);
1967                 SubdividePolygon(b, back[0]);
1968                 return;
1969         }
1970
1971         i1 = subdivpolylookupvert(verts);
1972         i2 = subdivpolylookupvert(verts + 3);
1973         for (i = 2;i < numverts;i++)
1974         {
1975                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
1976                 {
1977                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
1978                         return;
1979                 }
1980
1981                 i3 = subdivpolylookupvert(verts + i * 3);
1982                 subdivpolyindex[subdivpolytriangles][0] = i1;
1983                 subdivpolyindex[subdivpolytriangles][1] = i2;
1984                 subdivpolyindex[subdivpolytriangles][2] = i3;
1985                 i2 = i3;
1986                 subdivpolytriangles++;
1987         }
1988 }
1989
1990 //Breaks a polygon up along axial 64 unit
1991 //boundaries so that turbulent and sky warps
1992 //can be done reasonably.
1993 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
1994 {
1995         int i, j;
1996         surfvertex_t *v;
1997         surfmesh_t *mesh;
1998
1999         subdivpolytriangles = 0;
2000         subdivpolyverts = 0;
2001         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2002         if (subdivpolytriangles < 1)
2003                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2004
2005         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2006         mesh->num_vertices = subdivpolyverts;
2007         mesh->num_triangles = subdivpolytriangles;
2008         mesh->vertex = (surfvertex_t *)(mesh + 1);
2009         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2010         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2011
2012         for (i = 0;i < mesh->num_triangles;i++)
2013                 for (j = 0;j < 3;j++)
2014                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2015
2016         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2017         {
2018                 VectorCopy(subdivpolyvert[i], v->v);
2019                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2020                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2021         }
2022 }
2023 #endif
2024
2025 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2026 {
2027         int y, x2, y2;
2028         int bestx = totalwidth, besty = 0;
2029         // find the left-most space we can find
2030         for (y = 0;y <= totalheight - blockheight;y++)
2031         {
2032                 x2 = 0;
2033                 for (y2 = 0;y2 < blockheight;y2++)
2034                         x2 = max(x2, lineused[y+y2]);
2035                 if (bestx > x2)
2036                 {
2037                         bestx = x2;
2038                         besty = y;
2039                 }
2040         }
2041         // if the best was not good enough, return failure
2042         if (bestx > totalwidth - blockwidth)
2043                 return false;
2044         // we found a good spot
2045         if (outx)
2046                 *outx = bestx;
2047         if (outy)
2048                 *outy = besty;
2049         // now mark the space used
2050         for (y2 = 0;y2 < blockheight;y2++)
2051                 lineused[besty+y2] = bestx + blockwidth;
2052         // return success
2053         return true;
2054 }
2055
2056 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2057 {
2058         dface_t *in;
2059         msurface_t *surface;
2060         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2061         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2062 #define LIGHTMAPSIZE 256
2063         rtexture_t *lightmaptexture, *deluxemaptexture;
2064         int lightmap_lineused[LIGHTMAPSIZE];
2065
2066         in = (dface_t *)(mod_base + l->fileofs);
2067         if (l->filelen % sizeof(*in))
2068                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2069         count = l->filelen / sizeof(*in);
2070         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2071         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2072
2073         loadmodel->num_surfaces = count;
2074
2075         totalverts = 0;
2076         totaltris = 0;
2077         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2078         {
2079                 numedges = LittleShort(in->numedges);
2080                 totalverts += numedges;
2081                 totaltris += numedges - 2;
2082         }
2083
2084         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2085
2086         lightmaptexture = NULL;
2087         deluxemaptexture = r_texture_blanknormalmap;
2088         lightmapnumber = 1;
2089         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2090
2091         totalverts = 0;
2092         totaltris = 0;
2093         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2094         {
2095                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2096
2097                 // FIXME: validate edges, texinfo, etc?
2098                 firstedge = LittleLong(in->firstedge);
2099                 numedges = LittleShort(in->numedges);
2100                 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)
2101                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2102                 i = LittleShort(in->texinfo);
2103                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2104                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2105                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2106                 surface->texture = surface->lightmapinfo->texinfo->texture;
2107
2108                 planenum = LittleShort(in->planenum);
2109                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2110                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2111
2112                 //surface->flags = surface->texture->flags;
2113                 //if (LittleShort(in->side))
2114                 //      surface->flags |= SURF_PLANEBACK;
2115                 //surface->plane = loadmodel->brush.data_planes + planenum;
2116
2117                 surface->num_firstvertex = totalverts;
2118                 surface->num_vertices = numedges;
2119                 surface->num_firsttriangle = totaltris;
2120                 surface->num_triangles = numedges - 2;
2121                 totalverts += numedges;
2122                 totaltris += numedges - 2;
2123
2124                 // convert edges back to a normal polygon
2125                 for (i = 0;i < surface->num_vertices;i++)
2126                 {
2127                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2128                         float s, t;
2129                         if (lindex > 0)
2130                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2131                         else
2132                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2133                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2134                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2135                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2136                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2137                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2138                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2139                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2140                 }
2141
2142                 for (i = 0;i < surface->num_triangles;i++)
2143                 {
2144                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2145                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2146                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2147                 }
2148
2149                 // compile additional data about the surface geometry
2150                 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);
2151                 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);
2152                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2153
2154                 // generate surface extents information
2155                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2156                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2157                 for (i = 1;i < surface->num_vertices;i++)
2158                 {
2159                         for (j = 0;j < 2;j++)
2160                         {
2161                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2162                                 texmins[j] = min(texmins[j], val);
2163                                 texmaxs[j] = max(texmaxs[j], val);
2164                         }
2165                 }
2166                 for (i = 0;i < 2;i++)
2167                 {
2168                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2169                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2170                 }
2171
2172                 smax = surface->lightmapinfo->extents[0] >> 4;
2173                 tmax = surface->lightmapinfo->extents[1] >> 4;
2174                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2175                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2176
2177                 // lighting info
2178                 for (i = 0;i < MAXLIGHTMAPS;i++)
2179                         surface->lightmapinfo->styles[i] = in->styles[i];
2180                 surface->lightmaptexture = NULL;
2181                 surface->deluxemaptexture = r_texture_blanknormalmap;
2182                 i = LittleLong(in->lightofs);
2183                 if (i == -1)
2184                 {
2185                         surface->lightmapinfo->samples = NULL;
2186                         // give non-lightmapped water a 1x white lightmap
2187                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2188                         {
2189                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2190                                 surface->lightmapinfo->styles[0] = 0;
2191                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2192                         }
2193                 }
2194                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2195                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2196                 else // LordHavoc: white lighting (bsp version 29)
2197                 {
2198                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2199                         if (loadmodel->brushq1.nmaplightdata)
2200                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2201                 }
2202
2203                 // check if we should apply a lightmap to this
2204                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2205                 {
2206                         int i, iu, iv, lightmapx, lightmapy;
2207                         float u, v, ubase, vbase, uscale, vscale;
2208
2209                         if (ssize > 256 || tsize > 256)
2210                                 Host_Error("Bad surface extents");
2211                         // force lightmap upload on first time seeing the surface
2212                         surface->cached_dlight = true;
2213                         // stainmap for permanent marks on walls
2214                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2215                         // clear to white
2216                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2217
2218                         // find a place for this lightmap
2219                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2220                         {
2221                                 // could not find room, make a new lightmap
2222                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2223                                 if (loadmodel->brushq1.nmaplightdata)
2224                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2225                                 lightmapnumber++;
2226                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2227                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2228                         }
2229
2230                         surface->lightmaptexture = lightmaptexture;
2231                         surface->deluxemaptexture = deluxemaptexture;
2232                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2233                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2234
2235                         ubase = lightmapx * lightmaptexcoordscale;
2236                         vbase = lightmapy * lightmaptexcoordscale;
2237                         uscale = lightmaptexcoordscale;
2238                         vscale = lightmaptexcoordscale;
2239
2240                         for (i = 0;i < surface->num_vertices;i++)
2241                         {
2242                                 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);
2243                                 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);
2244                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2245                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2246                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2247                                 iu = (int) u;
2248                                 iv = (int) v;
2249                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2250                         }
2251                 }
2252         }
2253 }
2254
2255 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2256 {
2257         //if (node->parent)
2258         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2259         node->parent = parent;
2260         if (node->plane)
2261         {
2262                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2263                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2264         }
2265 }
2266
2267 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2268 {
2269         int                     i, j, count, p;
2270         dnode_t         *in;
2271         mnode_t         *out;
2272
2273         in = (dnode_t *)(mod_base + l->fileofs);
2274         if (l->filelen % sizeof(*in))
2275                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2276         count = l->filelen / sizeof(*in);
2277         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2278
2279         loadmodel->brush.data_nodes = out;
2280         loadmodel->brush.num_nodes = count;
2281
2282         for ( i=0 ; i<count ; i++, in++, out++)
2283         {
2284                 for (j=0 ; j<3 ; j++)
2285                 {
2286                         out->mins[j] = LittleShort(in->mins[j]);
2287                         out->maxs[j] = LittleShort(in->maxs[j]);
2288                 }
2289
2290                 p = LittleLong(in->planenum);
2291                 out->plane = loadmodel->brush.data_planes + p;
2292
2293                 out->firstsurface = LittleShort(in->firstface);
2294                 out->numsurfaces = LittleShort(in->numfaces);
2295
2296                 for (j=0 ; j<2 ; j++)
2297                 {
2298                         p = LittleShort(in->children[j]);
2299                         if (p >= 0)
2300                                 out->children[j] = loadmodel->brush.data_nodes + p;
2301                         else
2302                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2303                 }
2304         }
2305
2306         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2307 }
2308
2309 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2310 {
2311         dleaf_t *in;
2312         mleaf_t *out;
2313         int i, j, count, p;
2314
2315         in = (dleaf_t *)(mod_base + l->fileofs);
2316         if (l->filelen % sizeof(*in))
2317                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2318         count = l->filelen / sizeof(*in);
2319         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2320
2321         loadmodel->brush.data_leafs = out;
2322         loadmodel->brush.num_leafs = count;
2323         // get visleafs from the submodel data
2324         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2325         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2326         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2327         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2328
2329         for ( i=0 ; i<count ; i++, in++, out++)
2330         {
2331                 for (j=0 ; j<3 ; j++)
2332                 {
2333                         out->mins[j] = LittleShort(in->mins[j]);
2334                         out->maxs[j] = LittleShort(in->maxs[j]);
2335                 }
2336
2337                 // FIXME: this function could really benefit from some error checking
2338
2339                 out->contents = LittleLong(in->contents);
2340
2341                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2342                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2343                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2344                 {
2345                         Con_Printf("Mod_Q1BSP_LoadLeafs: invalid leafsurface range %i:%i outside range %i:%i\n", (int)(out->firstleafsurface - loadmodel->brush.data_leafsurfaces), (int)(out->firstleafsurface + out->numleafsurfaces - loadmodel->brush.data_leafsurfaces), 0, loadmodel->brush.num_leafsurfaces);
2346                         out->firstleafsurface = NULL;
2347                         out->numleafsurfaces = 0;
2348                 }
2349
2350                 out->clusterindex = i - 1;
2351                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2352                         out->clusterindex = -1;
2353
2354                 p = LittleLong(in->visofs);
2355                 // ignore visofs errors on leaf 0 (solid)
2356                 if (p >= 0 && out->clusterindex >= 0)
2357                 {
2358                         if (p >= loadmodel->brushq1.num_compressedpvs)
2359                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2360                         else
2361                                 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);
2362                 }
2363
2364                 for (j = 0;j < 4;j++)
2365                         out->ambient_sound_level[j] = in->ambient_level[j];
2366
2367                 // FIXME: Insert caustics here
2368         }
2369 }
2370
2371 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2372 {
2373         dclipnode_t *in, *out;
2374         int                     i, count;
2375         hull_t          *hull;
2376
2377         in = (dclipnode_t *)(mod_base + l->fileofs);
2378         if (l->filelen % sizeof(*in))
2379                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2380         count = l->filelen / sizeof(*in);
2381         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2382
2383         loadmodel->brushq1.clipnodes = out;
2384         loadmodel->brushq1.numclipnodes = count;
2385
2386         for (i = 1; i < hullinfo->numhulls; i++)
2387         {
2388                 hull = &loadmodel->brushq1.hulls[i];
2389                 hull->clipnodes = out;
2390                 hull->firstclipnode = 0;
2391                 hull->lastclipnode = count-1;
2392                 hull->planes = loadmodel->brush.data_planes;
2393                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2394                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2395                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2396                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2397                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2398                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2399                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2400         }
2401
2402         for (i=0 ; i<count ; i++, out++, in++)
2403         {
2404                 out->planenum = LittleLong(in->planenum);
2405                 out->children[0] = LittleShort(in->children[0]);
2406                 out->children[1] = LittleShort(in->children[1]);
2407                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2408                         Host_Error("Corrupt clipping hull(out of range planenum)");
2409                 if (out->children[0] >= count || out->children[1] >= count)
2410                         Host_Error("Corrupt clipping hull(out of range child)");
2411         }
2412 }
2413
2414 //Duplicate the drawing hull structure as a clipping hull
2415 static void Mod_Q1BSP_MakeHull0(void)
2416 {
2417         mnode_t         *in;
2418         dclipnode_t *out;
2419         int                     i;
2420         hull_t          *hull;
2421
2422         hull = &loadmodel->brushq1.hulls[0];
2423
2424         in = loadmodel->brush.data_nodes;
2425         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2426
2427         hull->clipnodes = out;
2428         hull->firstclipnode = 0;
2429         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2430         hull->planes = loadmodel->brush.data_planes;
2431
2432         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2433         {
2434                 out->planenum = in->plane - loadmodel->brush.data_planes;
2435                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2436                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2437         }
2438 }
2439
2440 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2441 {
2442         int i, j;
2443         short *in;
2444
2445         in = (short *)(mod_base + l->fileofs);
2446         if (l->filelen % sizeof(*in))
2447                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2448         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2449         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2450
2451         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2452         {
2453                 j = (unsigned) LittleShort(in[i]);
2454                 if (j >= loadmodel->num_surfaces)
2455                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2456                 loadmodel->brush.data_leafsurfaces[i] = j;
2457         }
2458 }
2459
2460 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2461 {
2462         int             i;
2463         int             *in;
2464
2465         in = (int *)(mod_base + l->fileofs);
2466         if (l->filelen % sizeof(*in))
2467                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2468         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2469         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2470
2471         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2472                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2473 }
2474
2475
2476 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2477 {
2478         int                     i;
2479         mplane_t        *out;
2480         dplane_t        *in;
2481
2482         in = (dplane_t *)(mod_base + l->fileofs);
2483         if (l->filelen % sizeof(*in))
2484                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2485
2486         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2487         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2488
2489         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2490         {
2491                 out->normal[0] = LittleFloat(in->normal[0]);
2492                 out->normal[1] = LittleFloat(in->normal[1]);
2493                 out->normal[2] = LittleFloat(in->normal[2]);
2494                 out->dist = LittleFloat(in->dist);
2495
2496                 PlaneClassify(out);
2497         }
2498 }
2499
2500 static void Mod_Q1BSP_LoadMapBrushes(void)
2501 {
2502 #if 0
2503 // unfinished
2504         int submodel, numbrushes;
2505         qboolean firstbrush;
2506         char *text, *maptext;
2507         char mapfilename[MAX_QPATH];
2508         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2509         strlcat (mapfilename, ".map", sizeof (mapfilename));
2510         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2511         if (!maptext)
2512                 return;
2513         text = maptext;
2514         if (!COM_ParseTokenConsole(&data))
2515                 return; // error
2516         submodel = 0;
2517         for (;;)
2518         {
2519                 if (!COM_ParseTokenConsole(&data))
2520                         break;
2521                 if (com_token[0] != '{')
2522                         return; // error
2523                 // entity
2524                 firstbrush = true;
2525                 numbrushes = 0;
2526                 maxbrushes = 256;
2527                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2528                 for (;;)
2529                 {
2530                         if (!COM_ParseTokenConsole(&data))
2531                                 return; // error
2532                         if (com_token[0] == '}')
2533                                 break; // end of entity
2534                         if (com_token[0] == '{')
2535                         {
2536                                 // brush
2537                                 if (firstbrush)
2538                                 {
2539                                         if (submodel)
2540                                         {
2541                                                 if (submodel > loadmodel->brush.numsubmodels)
2542                                                 {
2543                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2544                                                         model = NULL;
2545                                                 }
2546                                                 else
2547                                                         model = loadmodel->brush.submodels[submodel];
2548                                         }
2549                                         else
2550                                                 model = loadmodel;
2551                                 }
2552                                 for (;;)
2553                                 {
2554                                         if (!COM_ParseTokenConsole(&data))
2555                                                 return; // error
2556                                         if (com_token[0] == '}')
2557                                                 break; // end of brush
2558                                         // each brush face should be this format:
2559                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2560                                         // FIXME: support hl .map format
2561                                         for (pointnum = 0;pointnum < 3;pointnum++)
2562                                         {
2563                                                 COM_ParseTokenConsole(&data);
2564                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2565                                                 {
2566                                                         COM_ParseTokenConsole(&data);
2567                                                         point[pointnum][componentnum] = atof(com_token);
2568                                                 }
2569                                                 COM_ParseTokenConsole(&data);
2570                                         }
2571                                         COM_ParseTokenConsole(&data);
2572                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2573                                         COM_ParseTokenConsole(&data);
2574                                         //scroll_s = atof(com_token);
2575                                         COM_ParseTokenConsole(&data);
2576                                         //scroll_t = atof(com_token);
2577                                         COM_ParseTokenConsole(&data);
2578                                         //rotate = atof(com_token);
2579                                         COM_ParseTokenConsole(&data);
2580                                         //scale_s = atof(com_token);
2581                                         COM_ParseTokenConsole(&data);
2582                                         //scale_t = atof(com_token);
2583                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2584                                         VectorNormalizeDouble(planenormal);
2585                                         planedist = DotProduct(point[0], planenormal);
2586                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2587                                 }
2588                                 continue;
2589                         }
2590                 }
2591         }
2592 #endif
2593 }
2594
2595
2596 #define MAX_PORTALPOINTS 64
2597
2598 typedef struct portal_s
2599 {
2600         mplane_t plane;
2601         mnode_t *nodes[2];              // [0] = front side of plane
2602         struct portal_s *next[2];
2603         int numpoints;
2604         double points[3*MAX_PORTALPOINTS];
2605         struct portal_s *chain; // all portals are linked into a list
2606 }
2607 portal_t;
2608
2609 static portal_t *portalchain;
2610
2611 /*
2612 ===========
2613 AllocPortal
2614 ===========
2615 */
2616 static portal_t *AllocPortal(void)
2617 {
2618         portal_t *p;
2619         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2620         p->chain = portalchain;
2621         portalchain = p;
2622         return p;
2623 }
2624
2625 static void FreePortal(portal_t *p)
2626 {
2627         Mem_Free(p);
2628 }
2629
2630 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2631 {
2632         // process only nodes (leafs already had their box calculated)
2633         if (!node->plane)
2634                 return;
2635
2636         // calculate children first
2637         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2638         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2639
2640         // make combined bounding box from children
2641         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2642         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2643         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2644         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2645         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2646         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2647 }
2648
2649 static void Mod_Q1BSP_FinalizePortals(void)
2650 {
2651         int i, j, numportals, numpoints;
2652         portal_t *p, *pnext;
2653         mportal_t *portal;
2654         mvertex_t *point;
2655         mleaf_t *leaf, *endleaf;
2656
2657         // tally up portal and point counts and recalculate bounding boxes for all
2658         // leafs (because qbsp is very sloppy)
2659         leaf = loadmodel->brush.data_leafs;
2660         endleaf = leaf + loadmodel->brush.num_leafs;
2661         for (;leaf < endleaf;leaf++)
2662         {
2663                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2664                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2665         }
2666         p = portalchain;
2667         numportals = 0;
2668         numpoints = 0;
2669         while (p)
2670         {
2671                 // note: this check must match the one below or it will usually corrupt memory
2672                 // 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
2673                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2674                 {
2675                         numportals += 2;
2676                         numpoints += p->numpoints * 2;
2677                 }
2678                 p = p->chain;
2679         }
2680         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2681         loadmodel->brush.num_portals = numportals;
2682         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2683         loadmodel->brush.num_portalpoints = numpoints;
2684         // clear all leaf portal chains
2685         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2686                 loadmodel->brush.data_leafs[i].portals = NULL;
2687         // process all portals in the global portal chain, while freeing them
2688         portal = loadmodel->brush.data_portals;
2689         point = loadmodel->brush.data_portalpoints;
2690         p = portalchain;
2691         portalchain = NULL;
2692         while (p)
2693         {
2694                 pnext = p->chain;
2695
2696                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2697                 {
2698                         // note: this check must match the one above or it will usually corrupt memory
2699                         // 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
2700                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2701                         {
2702                                 // first make the back to front portal(forward portal)
2703                                 portal->points = point;
2704                                 portal->numpoints = p->numpoints;
2705                                 portal->plane.dist = p->plane.dist;
2706                                 VectorCopy(p->plane.normal, portal->plane.normal);
2707                                 portal->here = (mleaf_t *)p->nodes[1];
2708                                 portal->past = (mleaf_t *)p->nodes[0];
2709                                 // copy points
2710                                 for (j = 0;j < portal->numpoints;j++)
2711                                 {
2712                                         VectorCopy(p->points + j*3, point->position);
2713                                         point++;
2714                                 }
2715                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2716                                 PlaneClassify(&portal->plane);
2717
2718                                 // link into leaf's portal chain
2719                                 portal->next = portal->here->portals;
2720                                 portal->here->portals = portal;
2721
2722                                 // advance to next portal
2723                                 portal++;
2724
2725                                 // then make the front to back portal(backward portal)
2726                                 portal->points = point;
2727                                 portal->numpoints = p->numpoints;
2728                                 portal->plane.dist = -p->plane.dist;
2729                                 VectorNegate(p->plane.normal, portal->plane.normal);
2730                                 portal->here = (mleaf_t *)p->nodes[0];
2731                                 portal->past = (mleaf_t *)p->nodes[1];
2732                                 // copy points
2733                                 for (j = portal->numpoints - 1;j >= 0;j--)
2734                                 {
2735                                         VectorCopy(p->points + j*3, point->position);
2736                                         point++;
2737                                 }
2738                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2739                                 PlaneClassify(&portal->plane);
2740
2741                                 // link into leaf's portal chain
2742                                 portal->next = portal->here->portals;
2743                                 portal->here->portals = portal;
2744
2745                                 // advance to next portal
2746                                 portal++;
2747                         }
2748                         // add the portal's polygon points to the leaf bounding boxes
2749                         for (i = 0;i < 2;i++)
2750                         {
2751                                 leaf = (mleaf_t *)p->nodes[i];
2752                                 for (j = 0;j < p->numpoints;j++)
2753                                 {
2754                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2755                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2756                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2757                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2758                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2759                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2760                                 }
2761                         }
2762                 }
2763                 FreePortal(p);
2764                 p = pnext;
2765         }
2766         // now recalculate the node bounding boxes from the leafs
2767         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2768 }
2769
2770 /*
2771 =============
2772 AddPortalToNodes
2773 =============
2774 */
2775 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2776 {
2777         if (!front)
2778                 Host_Error("AddPortalToNodes: NULL front node");
2779         if (!back)
2780                 Host_Error("AddPortalToNodes: NULL back node");
2781         if (p->nodes[0] || p->nodes[1])
2782                 Host_Error("AddPortalToNodes: already included");
2783         // 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
2784
2785         p->nodes[0] = front;
2786         p->next[0] = (portal_t *)front->portals;
2787         front->portals = (mportal_t *)p;
2788
2789         p->nodes[1] = back;
2790         p->next[1] = (portal_t *)back->portals;
2791         back->portals = (mportal_t *)p;
2792 }
2793
2794 /*
2795 =============
2796 RemovePortalFromNode
2797 =============
2798 */
2799 static void RemovePortalFromNodes(portal_t *portal)
2800 {
2801         int i;
2802         mnode_t *node;
2803         void **portalpointer;
2804         portal_t *t;
2805         for (i = 0;i < 2;i++)
2806         {
2807                 node = portal->nodes[i];
2808
2809                 portalpointer = (void **) &node->portals;
2810                 while (1)
2811                 {
2812                         t = (portal_t *)*portalpointer;
2813                         if (!t)
2814                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2815
2816                         if (t == portal)
2817                         {
2818                                 if (portal->nodes[0] == node)
2819                                 {
2820                                         *portalpointer = portal->next[0];
2821                                         portal->nodes[0] = NULL;
2822                                 }
2823                                 else if (portal->nodes[1] == node)
2824                                 {
2825                                         *portalpointer = portal->next[1];
2826                                         portal->nodes[1] = NULL;
2827                                 }
2828                                 else
2829                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2830                                 break;
2831                         }
2832
2833                         if (t->nodes[0] == node)
2834                                 portalpointer = (void **) &t->next[0];
2835                         else if (t->nodes[1] == node)
2836                                 portalpointer = (void **) &t->next[1];
2837                         else
2838                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2839                 }
2840         }
2841 }
2842
2843 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2844 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2845 {
2846         int i, side;
2847         mnode_t *front, *back, *other_node;
2848         mplane_t clipplane, *plane;
2849         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2850         int numfrontpoints, numbackpoints;
2851         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2852
2853         // if a leaf, we're done
2854         if (!node->plane)
2855                 return;
2856
2857         plane = node->plane;
2858
2859         front = node->children[0];
2860         back = node->children[1];
2861         if (front == back)
2862                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2863
2864         // create the new portal by generating a polygon for the node plane,
2865         // and clipping it by all of the other portals(which came from nodes above this one)
2866         nodeportal = AllocPortal();
2867         nodeportal->plane = *plane;
2868
2869         // TODO: calculate node bounding boxes during recursion and calculate a maximum plane size accordingly to improve precision (as most maps do not need 1 billion unit plane polygons)
2870         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);
2871         nodeportal->numpoints = 4;
2872         side = 0;       // shut up compiler warning
2873         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
2874         {
2875                 clipplane = portal->plane;
2876                 if (portal->nodes[0] == portal->nodes[1])
2877                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
2878                 if (portal->nodes[0] == node)
2879                         side = 0;
2880                 else if (portal->nodes[1] == node)
2881                 {
2882                         clipplane.dist = -clipplane.dist;
2883                         VectorNegate(clipplane.normal, clipplane.normal);
2884                         side = 1;
2885                 }
2886                 else
2887                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2888
2889                 for (i = 0;i < nodeportal->numpoints*3;i++)
2890                         frontpoints[i] = nodeportal->points[i];
2891                 PolygonD_Divide(nodeportal->numpoints, frontpoints, clipplane.normal[0], clipplane.normal[1], clipplane.normal[2], clipplane.dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, nodeportal->points, &nodeportal->numpoints, 0, NULL, NULL, NULL);
2892                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
2893                         break;
2894         }
2895
2896         if (nodeportal->numpoints < 3)
2897         {
2898                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
2899                 nodeportal->numpoints = 0;
2900         }
2901         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
2902         {
2903                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
2904                 nodeportal->numpoints = 0;
2905         }
2906
2907         AddPortalToNodes(nodeportal, front, back);
2908
2909         // split the portals of this node along this node's plane and assign them to the children of this node
2910         // (migrating the portals downward through the tree)
2911         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
2912         {
2913                 if (portal->nodes[0] == portal->nodes[1])
2914                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
2915                 if (portal->nodes[0] == node)
2916                         side = 0;
2917                 else if (portal->nodes[1] == node)
2918                         side = 1;
2919                 else
2920                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2921                 nextportal = portal->next[side];
2922                 if (!portal->numpoints)
2923                         continue;
2924
2925                 other_node = portal->nodes[!side];
2926                 RemovePortalFromNodes(portal);
2927
2928                 // cut the portal into two portals, one on each side of the node plane
2929                 PolygonD_Divide(portal->numpoints, portal->points, plane->normal[0], plane->normal[1], plane->normal[2], plane->dist, PORTAL_DIST_EPSILON, MAX_PORTALPOINTS, frontpoints, &numfrontpoints, MAX_PORTALPOINTS, backpoints, &numbackpoints, NULL);
2930
2931                 if (!numfrontpoints)
2932                 {
2933                         if (side == 0)
2934                                 AddPortalToNodes(portal, back, other_node);
2935                         else
2936                                 AddPortalToNodes(portal, other_node, back);
2937                         continue;
2938                 }
2939                 if (!numbackpoints)
2940                 {
2941                         if (side == 0)
2942                                 AddPortalToNodes(portal, front, other_node);
2943                         else
2944                                 AddPortalToNodes(portal, other_node, front);
2945                         continue;
2946                 }
2947
2948                 // the portal is split
2949                 splitportal = AllocPortal();
2950                 temp = splitportal->chain;
2951                 *splitportal = *portal;
2952                 splitportal->chain = temp;
2953                 for (i = 0;i < numbackpoints*3;i++)
2954                         splitportal->points[i] = backpoints[i];
2955                 splitportal->numpoints = numbackpoints;
2956                 for (i = 0;i < numfrontpoints*3;i++)
2957                         portal->points[i] = frontpoints[i];
2958                 portal->numpoints = numfrontpoints;
2959
2960                 if (side == 0)
2961                 {
2962                         AddPortalToNodes(portal, front, other_node);
2963                         AddPortalToNodes(splitportal, back, other_node);
2964                 }
2965                 else
2966                 {
2967                         AddPortalToNodes(portal, other_node, front);
2968                         AddPortalToNodes(splitportal, other_node, back);
2969                 }
2970         }
2971
2972         Mod_Q1BSP_RecursiveNodePortals(front);
2973         Mod_Q1BSP_RecursiveNodePortals(back);
2974 }
2975
2976 static void Mod_Q1BSP_MakePortals(void)
2977 {
2978         portalchain = NULL;
2979         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
2980         Mod_Q1BSP_FinalizePortals();
2981 }
2982
2983 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
2984 {
2985         int i, j, stylecounts[256], totalcount, remapstyles[256];
2986         msurface_t *surface;
2987         memset(stylecounts, 0, sizeof(stylecounts));
2988         for (i = 0;i < model->nummodelsurfaces;i++)
2989         {
2990                 surface = model->data_surfaces + model->firstmodelsurface + i;
2991                 for (j = 0;j < MAXLIGHTMAPS;j++)
2992                         stylecounts[surface->lightmapinfo->styles[j]]++;
2993         }
2994         totalcount = 0;
2995         model->brushq1.light_styles = 0;
2996         for (i = 0;i < 255;i++)
2997         {
2998                 if (stylecounts[i])
2999                 {
3000                         remapstyles[i] = model->brushq1.light_styles++;
3001                         totalcount += stylecounts[i] + 1;
3002                 }
3003         }
3004         if (!totalcount)
3005                 return;
3006         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
3007         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3008         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3009         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3010         model->brushq1.light_styles = 0;
3011         for (i = 0;i < 255;i++)
3012                 if (stylecounts[i])
3013                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3014         j = 0;
3015         for (i = 0;i < model->brushq1.light_styles;i++)
3016         {
3017                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3018                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3019         }
3020         for (i = 0;i < model->nummodelsurfaces;i++)
3021         {
3022                 surface = model->data_surfaces + model->firstmodelsurface + i;
3023                 for (j = 0;j < MAXLIGHTMAPS;j++)
3024                         if (surface->lightmapinfo->styles[j] != 255)
3025                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3026         }
3027         j = 0;
3028         for (i = 0;i < model->brushq1.light_styles;i++)
3029         {
3030                 *model->brushq1.light_styleupdatechains[i] = NULL;
3031                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3032                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3033         }
3034 }
3035
3036 //Returns PVS data for a given point
3037 //(note: can return NULL)
3038 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3039 {
3040         mnode_t *node;
3041         node = model->brush.data_nodes;
3042         while (node->plane)
3043                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3044         if (((mleaf_t *)node)->clusterindex >= 0)
3045                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3046         else
3047                 return NULL;
3048 }
3049
3050 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3051 {
3052         while (node->plane)
3053         {
3054                 float d = PlaneDiff(org, node->plane);
3055                 if (d > radius)
3056                         node = node->children[0];
3057                 else if (d < -radius)
3058                         node = node->children[1];
3059                 else
3060                 {
3061                         // go down both sides
3062                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3063                         node = node->children[1];
3064                 }
3065         }
3066         // if this leaf is in a cluster, accumulate the pvs bits
3067         if (((mleaf_t *)node)->clusterindex >= 0)
3068         {
3069                 int i;
3070                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3071                 for (i = 0;i < pvsbytes;i++)
3072                         pvsbuffer[i] |= pvs[i];
3073         }
3074 }
3075
3076 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3077 //of the given point.
3078 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3079 {
3080         int bytes = model->brush.num_pvsclusterbytes;
3081         bytes = min(bytes, pvsbufferlength);
3082         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3083         {
3084                 memset(pvsbuffer, 0xFF, bytes);
3085                 return bytes;
3086         }
3087         memset(pvsbuffer, 0, bytes);
3088         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3089         return bytes;
3090 }
3091
3092 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3093 {
3094         vec3_t size;
3095         const hull_t *hull;
3096
3097         VectorSubtract(inmaxs, inmins, size);
3098         if (cmodel->brush.ismcbsp)
3099         {
3100                 if (size[0] < 3)
3101                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3102                 else if (size[2] < 48) // pick the nearest of 40 or 56
3103                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3104                 else
3105                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3106         }
3107         else if (cmodel->brush.ishlbsp)
3108         {
3109                 if (size[0] < 3)
3110                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3111                 else if (size[0] <= 32)
3112                 {
3113                         if (size[2] < 54) // pick the nearest of 36 or 72
3114                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3115                         else
3116                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3117                 }
3118                 else
3119                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3120         }
3121         else
3122         {
3123                 if (size[0] < 3)
3124                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3125                 else if (size[0] <= 32)
3126                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3127                 else
3128                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3129         }
3130         VectorCopy(inmins, outmins);
3131         VectorAdd(inmins, hull->clip_size, outmaxs);
3132 }
3133
3134 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3135 {
3136         int i, j, k;
3137         dheader_t *header;
3138         dmodel_t *bm;
3139         mempool_t *mainmempool;
3140         float dist, modelyawradius, modelradius, *vec;
3141         msurface_t *surface;
3142         int numshadowmeshtriangles;
3143         dheader_t _header;
3144         hullinfo_t hullinfo;
3145
3146         mod->type = mod_brushq1;
3147
3148         if (!memcmp (buffer, "MCBSPpad", 8))
3149         {
3150                 unsigned char   *index;
3151
3152                 mod->brush.ismcbsp = true;
3153                 mod->brush.ishlbsp = false;
3154
3155                 mod_base = (unsigned char*)buffer;
3156
3157                 index = mod_base;
3158                 index += 8;
3159                 i = SB_ReadInt (&index);
3160                 if (i != MCBSPVERSION)
3161                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3162
3163         // read hull info
3164                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3165                 hullinfo.filehulls = hullinfo.numhulls;
3166                 VectorClear (hullinfo.hullsizes[0][0]);
3167                 VectorClear (hullinfo.hullsizes[0][1]);
3168                 for (i = 1; i < hullinfo.numhulls; i++)
3169                 {
3170                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3171                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3172                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3173                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3174                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3175                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3176                 }
3177
3178         // read lumps
3179                 _header.version = 0;
3180                 for (i = 0; i < HEADER_LUMPS; i++)
3181                 {
3182                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3183                         _header.lumps[i].filelen = SB_ReadInt (&index);
3184                 }
3185
3186                 header = &_header;
3187         }
3188         else
3189         {
3190                 header = (dheader_t *)buffer;
3191
3192                 i = LittleLong(header->version);
3193                 if (i != BSPVERSION && i != 30)
3194                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3195                 mod->brush.ishlbsp = i == 30;
3196                 mod->brush.ismcbsp = false;
3197
3198         // fill in hull info
3199                 VectorClear (hullinfo.hullsizes[0][0]);
3200                 VectorClear (hullinfo.hullsizes[0][1]);
3201                 if (mod->brush.ishlbsp)
3202                 {
3203                         hullinfo.numhulls = 4;
3204                         hullinfo.filehulls = 4;
3205                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3206                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3207                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3208                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3209                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3210                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3211                 }
3212                 else
3213                 {
3214                         hullinfo.numhulls = 3;
3215                         hullinfo.filehulls = 4;
3216                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3217                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3218                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3219                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3220                 }
3221
3222         // read lumps
3223                 mod_base = (unsigned char*)buffer;
3224                 for (i = 0; i < HEADER_LUMPS; i++)
3225                 {
3226                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3227                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3228                 }
3229         }
3230
3231         mod->soundfromcenter = true;
3232         mod->TraceBox = Mod_Q1BSP_TraceBox;
3233         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3234         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3235         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3236         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3237         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3238         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3239         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3240         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3241         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3242         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3243         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3244         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3245         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3246
3247         if (loadmodel->isworldmodel)
3248         {
3249                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3250                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3251         }
3252
3253 // load into heap
3254
3255         // store which lightmap format to use
3256         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3257
3258         mod->brush.qw_md4sum = 0;
3259         mod->brush.qw_md4sum2 = 0;
3260         for (i = 0;i < HEADER_LUMPS;i++)
3261         {
3262                 if (i == LUMP_ENTITIES)
3263                         continue;
3264                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3265                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3266                         continue;
3267                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3268         }
3269
3270         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3271         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3272         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3273         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3274         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3275         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3276         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3277         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3278         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3279         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3280         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3281         // load submodels before leafs because they contain the number of vis leafs
3282         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3283         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3284         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3285         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3286
3287         if (!mod->brushq1.lightdata)
3288                 mod->brush.LightPoint = NULL;
3289
3290         if (mod->brushq1.data_compressedpvs)
3291                 Mem_Free(mod->brushq1.data_compressedpvs);
3292         mod->brushq1.data_compressedpvs = NULL;
3293         mod->brushq1.num_compressedpvs = 0;
3294
3295         Mod_Q1BSP_MakeHull0();
3296         Mod_Q1BSP_MakePortals();
3297
3298         mod->numframes = 2;             // regular and alternate animation
3299         mod->numskins = 1;
3300
3301         mainmempool = mod->mempool;
3302
3303         // make a single combined shadow mesh to allow optimized shadow volume creation
3304         numshadowmeshtriangles = 0;
3305         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3306         {
3307                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3308                 numshadowmeshtriangles += surface->num_triangles;
3309         }
3310         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3311         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3312                 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));
3313         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
3314         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3315
3316         if (loadmodel->brush.numsubmodels)
3317                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3318
3319         if (loadmodel->isworldmodel)
3320         {
3321                 // clear out any stale submodels or worldmodels lying around
3322                 // if we did this clear before now, an error might abort loading and
3323                 // leave things in a bad state
3324                 Mod_RemoveStaleWorldModels(loadmodel);
3325         }
3326
3327         // LordHavoc: to clear the fog around the original quake submodel code, I
3328         // will explain:
3329         // first of all, some background info on the submodels:
3330         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3331         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3332         // now the weird for loop itself:
3333         // the loop functions in an odd way, on each iteration it sets up the
3334         // current 'mod' model (which despite the confusing code IS the model of
3335         // the number i), at the end of the loop it duplicates the model to become
3336         // the next submodel, and loops back to set up the new submodel.
3337
3338         // LordHavoc: now the explanation of my sane way (which works identically):
3339         // set up the world model, then on each submodel copy from the world model
3340         // and set up the submodel with the respective model info.
3341         for (i = 0;i < mod->brush.numsubmodels;i++)
3342         {
3343                 // LordHavoc: this code was originally at the end of this loop, but
3344                 // has been transformed to something more readable at the start here.
3345
3346                 if (i > 0)
3347                 {
3348                         char name[10];
3349                         // LordHavoc: only register submodels if it is the world
3350                         // (prevents external bsp models from replacing world submodels with
3351                         //  their own)
3352                         if (!loadmodel->isworldmodel)
3353                                 continue;
3354                         // duplicate the basic information
3355                         sprintf(name, "*%i", i);
3356                         mod = Mod_FindName(name);
3357                         // copy the base model to this one
3358                         *mod = *loadmodel;
3359                         // rename the clone back to its proper name
3360                         strlcpy(mod->name, name, sizeof(mod->name));
3361                         // textures and memory belong to the main model
3362                         mod->texturepool = NULL;
3363                         mod->mempool = NULL;
3364                 }
3365
3366                 mod->brush.submodel = i;
3367
3368                 if (loadmodel->brush.submodels)
3369                         loadmodel->brush.submodels[i] = mod;
3370
3371                 bm = &mod->brushq1.submodels[i];
3372
3373                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3374                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3375                 {
3376                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3377                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3378                 }
3379
3380                 mod->firstmodelsurface = bm->firstface;
3381                 mod->nummodelsurfaces = bm->numfaces;
3382
3383                 // make the model surface list (used by shadowing/lighting)
3384                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3385                 for (j = 0;j < mod->nummodelsurfaces;j++)
3386                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3387
3388                 // this gets altered below if sky is used
3389                 mod->DrawSky = NULL;
3390                 mod->Draw = R_Q1BSP_Draw;
3391                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3392                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3393                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3394                 mod->DrawLight = R_Q1BSP_DrawLight;
3395                 if (i != 0)
3396                 {
3397                         mod->brush.GetPVS = NULL;
3398                         mod->brush.FatPVS = NULL;
3399                         mod->brush.BoxTouchingPVS = NULL;
3400                         mod->brush.BoxTouchingLeafPVS = NULL;
3401                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3402                         mod->brush.FindBoxClusters = NULL;
3403                         mod->brush.LightPoint = NULL;
3404                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3405                 }
3406                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3407                 if (mod->nummodelsurfaces)
3408                 {
3409                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3410                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3411                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3412                         modelyawradius = 0;
3413                         modelradius = 0;
3414                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3415                         {
3416                                 // we only need to have a drawsky function if it is used(usually only on world model)
3417                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3418                                         mod->DrawSky = R_Q1BSP_DrawSky;
3419                                 // calculate bounding shapes
3420                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3421                                 {
3422                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3423                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3424                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3425                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3426                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3427                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3428                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3429                                         if (modelyawradius < dist)
3430                                                 modelyawradius = dist;
3431                                         dist += vec[2]*vec[2];
3432                                         if (modelradius < dist)
3433                                                 modelradius = dist;
3434                                 }
3435                         }
3436                         modelyawradius = sqrt(modelyawradius);
3437                         modelradius = sqrt(modelradius);
3438                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3439                         mod->yawmins[2] = mod->normalmins[2];
3440                         mod->yawmaxs[2] = mod->normalmaxs[2];
3441                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3442                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3443                         mod->radius = modelradius;
3444                         mod->radius2 = modelradius * modelradius;
3445                 }
3446                 else
3447                 {
3448                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3449                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3450                 }
3451                 //mod->brushq1.num_visleafs = bm->visleafs;
3452         }
3453
3454         Mod_Q1BSP_LoadMapBrushes();
3455
3456         //Mod_Q1BSP_ProcessLightList();
3457
3458         if (developer.integer >= 10)
3459                 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);
3460 }
3461
3462 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3463 {
3464 }
3465
3466 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3467 {
3468 /*
3469         d_t *in;
3470         m_t *out;
3471         int i, count;
3472
3473         in = (void *)(mod_base + l->fileofs);
3474         if (l->filelen % sizeof(*in))
3475                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3476         count = l->filelen / sizeof(*in);
3477         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3478
3479         loadmodel-> = out;
3480         loadmodel->num = count;
3481
3482         for (i = 0;i < count;i++, in++, out++)
3483         {
3484         }
3485 */
3486 }
3487
3488 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3489 {
3490 /*
3491         d_t *in;
3492         m_t *out;
3493         int i, count;
3494
3495         in = (void *)(mod_base + l->fileofs);
3496         if (l->filelen % sizeof(*in))
3497                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3498         count = l->filelen / sizeof(*in);
3499         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3500
3501         loadmodel-> = out;
3502         loadmodel->num = count;
3503
3504         for (i = 0;i < count;i++, in++, out++)
3505         {
3506         }
3507 */
3508 }
3509
3510 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3511 {
3512 /*
3513         d_t *in;
3514         m_t *out;
3515         int i, count;
3516
3517         in = (void *)(mod_base + l->fileofs);
3518         if (l->filelen % sizeof(*in))
3519                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3520         count = l->filelen / sizeof(*in);
3521         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3522
3523         loadmodel-> = out;
3524         loadmodel->num = count;
3525
3526         for (i = 0;i < count;i++, in++, out++)
3527         {
3528         }
3529 */
3530 }
3531
3532 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3533 {
3534 /*
3535         d_t *in;
3536         m_t *out;
3537         int i, count;
3538
3539         in = (void *)(mod_base + l->fileofs);
3540         if (l->filelen % sizeof(*in))
3541                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3542         count = l->filelen / sizeof(*in);
3543         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3544
3545         loadmodel-> = out;
3546         loadmodel->num = count;
3547
3548         for (i = 0;i < count;i++, in++, out++)
3549         {
3550         }
3551 */
3552 }
3553
3554 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3555 {
3556 /*
3557         d_t *in;
3558         m_t *out;
3559         int i, count;
3560
3561         in = (void *)(mod_base + l->fileofs);
3562         if (l->filelen % sizeof(*in))
3563                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3564         count = l->filelen / sizeof(*in);
3565         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3566
3567         loadmodel-> = out;
3568         loadmodel->num = count;
3569
3570         for (i = 0;i < count;i++, in++, out++)
3571         {
3572         }
3573 */
3574 }
3575
3576 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3577 {
3578 /*
3579         d_t *in;
3580         m_t *out;
3581         int i, count;
3582
3583         in = (void *)(mod_base + l->fileofs);
3584         if (l->filelen % sizeof(*in))
3585                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3586         count = l->filelen / sizeof(*in);
3587         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3588
3589         loadmodel-> = out;
3590         loadmodel->num = count;
3591
3592         for (i = 0;i < count;i++, in++, out++)
3593         {
3594         }
3595 */
3596 }
3597
3598 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3599 {
3600 /*
3601         d_t *in;
3602         m_t *out;
3603         int i, count;
3604
3605         in = (void *)(mod_base + l->fileofs);
3606         if (l->filelen % sizeof(*in))
3607                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3608         count = l->filelen / sizeof(*in);
3609         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3610
3611         loadmodel-> = out;
3612         loadmodel->num = count;
3613
3614         for (i = 0;i < count;i++, in++, out++)
3615         {
3616         }
3617 */
3618 }
3619
3620 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3621 {
3622 /*
3623         d_t *in;
3624         m_t *out;
3625         int i, count;
3626
3627         in = (void *)(mod_base + l->fileofs);
3628         if (l->filelen % sizeof(*in))
3629                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3630         count = l->filelen / sizeof(*in);
3631         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3632
3633         loadmodel-> = out;
3634         loadmodel->num = count;
3635
3636         for (i = 0;i < count;i++, in++, out++)
3637         {
3638         }
3639 */
3640 }
3641
3642 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3643 {
3644 /*
3645         d_t *in;
3646         m_t *out;
3647         int i, count;
3648
3649         in = (void *)(mod_base + l->fileofs);
3650         if (l->filelen % sizeof(*in))
3651                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3652         count = l->filelen / sizeof(*in);
3653         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3654
3655         loadmodel-> = out;
3656         loadmodel->num = count;
3657
3658         for (i = 0;i < count;i++, in++, out++)
3659         {
3660         }
3661 */
3662 }
3663
3664 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3665 {
3666 /*
3667         d_t *in;
3668         m_t *out;
3669         int i, count;
3670
3671         in = (void *)(mod_base + l->fileofs);
3672         if (l->filelen % sizeof(*in))
3673                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3674         count = l->filelen / sizeof(*in);
3675         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3676
3677         loadmodel-> = out;
3678         loadmodel->num = count;
3679
3680         for (i = 0;i < count;i++, in++, out++)
3681         {
3682         }
3683 */
3684 }
3685
3686 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3687 {
3688 /*
3689         d_t *in;
3690         m_t *out;
3691         int i, count;
3692
3693         in = (void *)(mod_base + l->fileofs);
3694         if (l->filelen % sizeof(*in))
3695                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3696         count = l->filelen / sizeof(*in);
3697         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3698
3699         loadmodel-> = out;
3700         loadmodel->num = count;
3701
3702         for (i = 0;i < count;i++, in++, out++)
3703         {
3704         }
3705 */
3706 }
3707
3708 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3709 {
3710 /*
3711         d_t *in;
3712         m_t *out;
3713         int i, count;
3714
3715         in = (void *)(mod_base + l->fileofs);
3716         if (l->filelen % sizeof(*in))
3717                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3718         count = l->filelen / sizeof(*in);
3719         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3720
3721         loadmodel-> = out;
3722         loadmodel->num = count;
3723
3724         for (i = 0;i < count;i++, in++, out++)
3725         {
3726         }
3727 */
3728 }
3729
3730 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3731 {
3732 /*
3733         d_t *in;
3734         m_t *out;
3735         int i, count;
3736
3737         in = (void *)(mod_base + l->fileofs);
3738         if (l->filelen % sizeof(*in))
3739                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3740         count = l->filelen / sizeof(*in);
3741         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3742
3743         loadmodel-> = out;
3744         loadmodel->num = count;
3745
3746         for (i = 0;i < count;i++, in++, out++)
3747         {
3748         }
3749 */
3750 }
3751
3752 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3753 {
3754 /*
3755         d_t *in;
3756         m_t *out;
3757         int i, count;
3758
3759         in = (void *)(mod_base + l->fileofs);
3760         if (l->filelen % sizeof(*in))
3761                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3762         count = l->filelen / sizeof(*in);
3763         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3764
3765         loadmodel-> = out;
3766         loadmodel->num = count;
3767
3768         for (i = 0;i < count;i++, in++, out++)
3769         {
3770         }
3771 */
3772 }
3773
3774 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3775 {
3776 /*
3777         d_t *in;
3778         m_t *out;
3779         int i, count;
3780
3781         in = (void *)(mod_base + l->fileofs);
3782         if (l->filelen % sizeof(*in))
3783                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3784         count = l->filelen / sizeof(*in);
3785         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3786
3787         loadmodel-> = out;
3788         loadmodel->num = count;
3789
3790         for (i = 0;i < count;i++, in++, out++)
3791         {
3792         }
3793 */
3794 }
3795
3796 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3797 {
3798 /*
3799         d_t *in;
3800         m_t *out;
3801         int i, count;
3802
3803         in = (void *)(mod_base + l->fileofs);
3804         if (l->filelen % sizeof(*in))
3805                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3806         count = l->filelen / sizeof(*in);
3807         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3808
3809         loadmodel-> = out;
3810         loadmodel->num = count;
3811
3812         for (i = 0;i < count;i++, in++, out++)
3813         {
3814         }
3815 */
3816 }
3817
3818 static void Mod_Q2BSP_LoadModels(lump_t *l)
3819 {
3820 /*
3821         d_t *in;
3822         m_t *out;
3823         int i, count;
3824
3825         in = (void *)(mod_base + l->fileofs);
3826         if (l->filelen % sizeof(*in))
3827                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3828         count = l->filelen / sizeof(*in);
3829         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3830
3831         loadmodel-> = out;
3832         loadmodel->num = count;
3833
3834         for (i = 0;i < count;i++, in++, out++)
3835         {
3836         }
3837 */
3838 }
3839
3840 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3841 {
3842         int i;
3843         q2dheader_t *header;
3844
3845         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3846
3847         mod->type = mod_brushq2;
3848
3849         header = (q2dheader_t *)buffer;
3850
3851         i = LittleLong(header->version);
3852         if (i != Q2BSPVERSION)
3853                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3854         mod->brush.ishlbsp = false;
3855         mod->brush.ismcbsp = false;
3856         if (loadmodel->isworldmodel)
3857         {
3858                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3859                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3860         }
3861
3862         mod_base = (unsigned char *)header;
3863
3864         // swap all the lumps
3865         for (i = 0;i < (int) sizeof(*header) / 4;i++)
3866                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
3867
3868         // store which lightmap format to use
3869         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3870
3871         mod->brush.qw_md4sum = 0;
3872         mod->brush.qw_md4sum2 = 0;
3873         for (i = 0;i < Q2HEADER_LUMPS;i++)
3874         {
3875                 if (i == Q2LUMP_ENTITIES)
3876                         continue;
3877                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3878                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
3879                         continue;
3880                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3881         }
3882
3883         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
3884         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
3885         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
3886         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
3887         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
3888         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
3889         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
3890         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
3891         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
3892         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
3893         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
3894         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
3895         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
3896         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
3897         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
3898         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
3899         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
3900         // LordHavoc: must go last because this makes the submodels
3901         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
3902 }
3903
3904 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
3905 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
3906
3907 static void Mod_Q3BSP_LoadEntities(lump_t *l)
3908 {
3909         const char *data;
3910         char key[128], value[MAX_INPUTLINE];
3911         float v[3];
3912         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
3913         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
3914         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
3915         if (!l->filelen)
3916                 return;
3917         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
3918         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
3919         data = loadmodel->brush.entities;
3920         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
3921         if (data && COM_ParseTokenConsole(&data) && com_token[0] == '{')
3922         {
3923                 while (1)
3924                 {
3925                         if (!COM_ParseTokenConsole(&data))
3926                                 break; // error
3927                         if (com_token[0] == '}')
3928                                 break; // end of worldspawn
3929                         if (com_token[0] == '_')
3930                                 strlcpy(key, com_token + 1, sizeof(key));
3931                         else
3932                                 strlcpy(key, com_token, sizeof(key));
3933                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
3934                                 key[strlen(key)-1] = 0;
3935                         if (!COM_ParseTokenConsole(&data))
3936                                 break; // error
3937                         strlcpy(value, com_token, sizeof(value));
3938                         if (!strcmp("gridsize", key))
3939                         {
3940                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
3941                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
3942                         }
3943                 }
3944         }
3945 }
3946
3947 // FIXME: make MAXSHADERS dynamic
3948 #define Q3SHADER_MAXSHADERS 4096
3949 #define Q3SHADER_MAXLAYERS 8
3950
3951 typedef struct q3shaderinfo_layer_s
3952 {
3953         int alphatest;
3954         int clampmap;
3955         float framerate;
3956         int numframes;
3957         char texturename[TEXTURE_MAXFRAMES][Q3PATHLENGTH];
3958         int blendfunc[2];
3959         qboolean rgbgenvertex;
3960         qboolean alphagenvertex;
3961 }
3962 q3shaderinfo_layer_t;
3963
3964 typedef struct q3shaderinfo_s
3965 {
3966         char name[Q3PATHLENGTH];
3967         int surfaceparms;
3968         int textureflags;
3969         int numlayers;
3970         qboolean lighting;
3971         qboolean vertexalpha;
3972         qboolean textureblendalpha;
3973         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
3974         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
3975         char skyboxname[Q3PATHLENGTH];
3976 }
3977 q3shaderinfo_t;
3978
3979 int q3shaders_numshaders;
3980 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
3981
3982 static void Mod_Q3BSP_LoadShaders(void)
3983 {
3984         int j;
3985         int fileindex;
3986         fssearch_t *search;
3987         char *f;
3988         const char *text;
3989         q3shaderinfo_t *shader;
3990         q3shaderinfo_layer_t *layer;
3991         int numparameters;
3992         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
3993         search = FS_Search("scripts/*.shader", true, false);
3994         if (!search)
3995                 return;
3996         q3shaders_numshaders = 0;
3997         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
3998         {
3999                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
4000                 if (!f)
4001                         continue;
4002                 while (COM_ParseToken(&text, false))
4003                 {
4004                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
4005                         {
4006                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
4007                                 break;
4008                         }
4009                         shader = q3shaders_shaders + q3shaders_numshaders++;
4010                         memset(shader, 0, sizeof(*shader));
4011                         strlcpy(shader->name, com_token, sizeof(shader->name));
4012                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
4013                         {
4014                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4015                                 break;
4016                         }
4017                         while (COM_ParseToken(&text, false))
4018                         {
4019                                 if (!strcasecmp(com_token, "}"))
4020                                         break;
4021                                 if (!strcasecmp(com_token, "{"))
4022                                 {
4023                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4024                                         {
4025                                                 layer = shader->layers + shader->numlayers++;
4026                                                 layer->rgbgenvertex = false;
4027                                                 layer->alphagenvertex = false;
4028                                                 layer->blendfunc[0] = GL_ONE;
4029                                                 layer->blendfunc[1] = GL_ZERO;
4030                                         }
4031                                         else
4032                                                 layer = NULL;
4033                                         while (COM_ParseToken(&text, false))
4034                                         {
4035                                                 if (!strcasecmp(com_token, "}"))
4036                                                         break;
4037                                                 if (!strcasecmp(com_token, "\n"))
4038                                                         continue;
4039                                                 if (layer == NULL)
4040                                                         continue;
4041                                                 numparameters = 0;
4042                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4043                                                 {
4044                                                         if (j < TEXTURE_MAXFRAMES + 4)
4045                                                         {
4046                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4047                                                                 numparameters = j + 1;
4048                                                         }
4049                                                         if (!COM_ParseToken(&text, true))
4050                                                                 break;
4051                                                 }
4052                                                 if (developer.integer >= 100)
4053                                                 {
4054                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4055                                                         for (j = 0;j < numparameters;j++)
4056                                                                 Con_Printf(" %s", parameter[j]);
4057                                                         Con_Print("\n");
4058                                                 }
4059                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4060                                                 {
4061                                                         if (numparameters == 2)
4062                                                         {
4063                                                                 if (!strcasecmp(parameter[1], "add"))
4064                                                                 {
4065                                                                         layer->blendfunc[0] = GL_ONE;
4066                                                                         layer->blendfunc[1] = GL_ONE;
4067                                                                 }
4068                                                                 else if (!strcasecmp(parameter[1], "filter"))
4069                                                                 {
4070                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4071                                                                         layer->blendfunc[1] = GL_ZERO;
4072                                                                 }
4073                                                                 else if (!strcasecmp(parameter[1], "blend"))
4074                                                                 {
4075                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4076                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4077                                                                 }
4078                                                         }
4079                                                         else if (numparameters == 3)
4080                                                         {
4081                                                                 int k;
4082                                                                 for (k = 0;k < 2;k++)
4083                                                                 {
4084                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4085                                                                                 layer->blendfunc[k] = GL_ONE;
4086                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4087                                                                                 layer->blendfunc[k] = GL_ZERO;
4088                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4089                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4090                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4091                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4092                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4093                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4094                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4095                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4096                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4097                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4098                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4099                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4100                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4101                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4102                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4103                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4104                                                                         else
4105                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4106                                                                 }
4107                                                         }
4108                                                 }
4109                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4110                                                         layer->alphatest = true;
4111                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4112                                                 {
4113                                                         if (!strcasecmp(parameter[0], "clampmap"))
4114                                                                 layer->clampmap = true;
4115                                                         layer->numframes = 1;
4116                                                         layer->framerate = 1;
4117                                                         strlcpy(layer->texturename[0], parameter[1], sizeof(layer->texturename));
4118                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4119                                                                 shader->lighting = true;
4120                                                 }
4121                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
4122                                                 {
4123                                                         int i;
4124                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
4125                                                         layer->framerate = atoi(parameter[1]);
4126                                                         for (i = 0;i < layer->numframes;i++)
4127                                                                 strlcpy(layer->texturename[i], parameter[i + 2], sizeof(layer->texturename));
4128                                                 }
4129                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4130                                                         layer->rgbgenvertex = true;
4131                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4132                                                         layer->alphagenvertex = true;
4133                                                 // break out a level if it was }
4134                                                 if (!strcasecmp(com_token, "}"))
4135                                                         break;
4136                                         }
4137                                         if (layer->rgbgenvertex)
4138                                                 shader->lighting = true;
4139                                         if (layer->alphagenvertex)
4140                                         {
4141                                                 if (layer == shader->layers + 0)
4142                                                 {
4143                                                         // vertex controlled transparency
4144                                                         shader->vertexalpha = true;
4145                                                 }
4146                                                 else
4147                                                 {
4148                                                         // multilayer terrain shader or similar
4149                                                         shader->textureblendalpha = true;
4150                                                 }
4151                                         }
4152                                         continue;
4153                                 }
4154                                 numparameters = 0;
4155                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4156                                 {
4157                                         if (j < TEXTURE_MAXFRAMES + 4)
4158                                         {
4159                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4160                                                 numparameters = j + 1;
4161                                         }
4162                                         if (!COM_ParseToken(&text, true))
4163                                                 break;
4164                                 }
4165                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4166                                         break;
4167                                 if (developer.integer >= 100)
4168                                 {
4169                                         Con_Printf("%s: ", shader->name);
4170                                         for (j = 0;j < numparameters;j++)
4171                                                 Con_Printf(" %s", parameter[j]);
4172                                         Con_Print("\n");
4173                                 }
4174                                 if (numparameters < 1)
4175                                         continue;
4176                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4177                                 {
4178                                         if (!strcasecmp(parameter[1], "alphashadow"))
4179                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4180                                         else if (!strcasecmp(parameter[1], "areaportal"))
4181                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4182                                         else if (!strcasecmp(parameter[1], "botclip"))
4183                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4184                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4185                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4186                                         else if (!strcasecmp(parameter[1], "detail"))
4187                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4188                                         else if (!strcasecmp(parameter[1], "donotenter"))
4189                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4190                                         else if (!strcasecmp(parameter[1], "dust"))
4191                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4192                                         else if (!strcasecmp(parameter[1], "hint"))
4193                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4194                                         else if (!strcasecmp(parameter[1], "fog"))
4195                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4196                                         else if (!strcasecmp(parameter[1], "lava"))
4197                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4198                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4199                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4200                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4201                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4202                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4203                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4204                                         else if (!strcasecmp(parameter[1], "nodamage"))
4205                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4206                                         else if (!strcasecmp(parameter[1], "nodlight"))
4207                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4208                                         else if (!strcasecmp(parameter[1], "nodraw"))
4209                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4210                                         else if (!strcasecmp(parameter[1], "nodrop"))
4211                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4212                                         else if (!strcasecmp(parameter[1], "noimpact"))
4213                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4214                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4215                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4216                                         else if (!strcasecmp(parameter[1], "nomarks"))
4217                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4218                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4219                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4220                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4221                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4222                                         else if (!strcasecmp(parameter[1], "origin"))
4223                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4224                                         else if (!strcasecmp(parameter[1], "playerclip"))
4225                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4226                                         else if (!strcasecmp(parameter[1], "sky"))
4227                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4228                                         else if (!strcasecmp(parameter[1], "slick"))
4229                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4230                                         else if (!strcasecmp(parameter[1], "slime"))
4231                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4232                                         else if (!strcasecmp(parameter[1], "structural"))
4233                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4234                                         else if (!strcasecmp(parameter[1], "trans"))
4235                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4236                                         else if (!strcasecmp(parameter[1], "water"))
4237                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4238                                         else if (!strcasecmp(parameter[1], "pointlight"))
4239                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4240                                         else
4241                                                 Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4242                                 }
4243                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4244                                 {
4245                                         // some q3 skies don't have the sky parm set
4246                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4247                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4248                                 }
4249                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4250                                 {
4251                                         // some q3 skies don't have the sky parm set
4252                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4253                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4254                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4255                                 }
4256                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4257                                 {
4258                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4259                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4260                                 }
4261                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4262                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4263                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4264                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4265                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4266                                 {
4267                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4268                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4269                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4270                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4271                                 }
4272                         }
4273                         // identify if this is a blended terrain shader or similar
4274                         if (shader->numlayers)
4275                         {
4276                                 shader->primarylayer = shader->layers + 0;
4277                                 if ((shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA) || shader->layers[1].alphatest)
4278                                 {
4279                                         // terrain blending or other effects
4280                                         shader->backgroundlayer = shader->layers + 0;
4281                                         shader->primarylayer = shader->layers + 1;
4282                                 }
4283                                 // now see if the lightmap came first, and if so choose the second texture instead
4284                                 if (!strcasecmp(shader->primarylayer->texturename[0], "$lightmap"))
4285                                         shader->primarylayer = shader->layers + 1;
4286                         }
4287                 }
4288                 Mem_Free(f);
4289         }
4290 }
4291
4292 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4293 {
4294         int i;
4295         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4296                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4297                         return q3shaders_shaders + i;
4298         return NULL;
4299 }
4300
4301 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4302 {
4303         q3dtexture_t *in;
4304         texture_t *out;
4305         int i, count, c;
4306
4307         in = (q3dtexture_t *)(mod_base + l->fileofs);
4308         if (l->filelen % sizeof(*in))
4309                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4310         count = l->filelen / sizeof(*in);
4311         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4312
4313         loadmodel->data_textures = out;
4314         loadmodel->num_textures = count;
4315
4316         // parse the Q3 shader files
4317         Mod_Q3BSP_LoadShaders();
4318
4319         c = 0;
4320         for (i = 0;i < count;i++, in++, out++)
4321         {
4322                 q3shaderinfo_t *shader;
4323                 strlcpy (out->name, in->name, sizeof (out->name));
4324                 out->surfaceflags = LittleLong(in->surfaceflags);
4325                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4326                 shader = Mod_Q3BSP_LookupShader(out->name);
4327                 if (shader)
4328                 {
4329                         out->surfaceparms = shader->surfaceparms;
4330                         out->textureflags = shader->textureflags;
4331                         out->basematerialflags = 0;
4332                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4333                         {
4334                                 out->basematerialflags |= MATERIALFLAG_SKY;
4335                                 if (shader->skyboxname[0])
4336                                 {
4337                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4338                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4339                                 }
4340                         }
4341                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4342                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4343                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4344                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
4345                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4346                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4347                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4348                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4349                         else
4350                                 out->basematerialflags |= MATERIALFLAG_WALL;
4351                         if (shader->layers[0].alphatest)
4352                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_TRANSPARENT;
4353                         out->customblendfunc[0] = GL_ONE;
4354                         out->customblendfunc[1] = GL_ZERO;
4355                         if (shader->numlayers > 0)
4356                         {
4357                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4358                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4359 /*
4360 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4361 * additive               GL_ONE GL_ONE
4362   additive weird         GL_ONE GL_SRC_ALPHA
4363   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4364 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4365   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4366   brighten               GL_DST_COLOR GL_ONE
4367   brighten               GL_ONE GL_SRC_COLOR
4368   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4369   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4370 * modulate               GL_DST_COLOR GL_ZERO
4371 * modulate               GL_ZERO GL_SRC_COLOR
4372   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4373   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4374   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4375 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4376 * no blend               GL_ONE GL_ZERO
4377   nothing                GL_ZERO GL_ONE
4378 */
4379                                 // if not opaque, figure out what blendfunc to use
4380                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4381                                 {
4382                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4383                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4384                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4385                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4386                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4387                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4388                                         else
4389                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4390                                 }
4391                         }
4392                         if (!shader->lighting)
4393                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4394                         if (shader->primarylayer && cls.state != ca_dedicated)
4395                         {
4396                                 int j;
4397                                 out->numskinframes = shader->primarylayer->numframes;
4398                                 out->skinframerate = shader->primarylayer->framerate;
4399                                 for (j = 0;j < shader->primarylayer->numframes;j++)
4400                                         if (!Mod_LoadSkinFrame(&out->skinframes[j], shader->primarylayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP ? 0 : TEXF_PICMIP) | (shader->primarylayer->clampmap ? TEXF_CLAMP : 0), false, true))
4401                                                 Con_Printf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4402                         }
4403                 }
4404                 else
4405                 {
4406                         c++;
4407                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4408                         out->surfaceparms = 0;
4409                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4410                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4411                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4412                                 out->basematerialflags |= MATERIALFLAG_SKY;
4413                         else
4414                                 out->basematerialflags |= MATERIALFLAG_WALL;
4415                         // these are defaults
4416                         //if (!strncmp(out->name, "textures/skies/", 15))
4417                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4418                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4419                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4420                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4421                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4422                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4423                         if (cls.state != ca_dedicated)
4424                                 if (!Mod_LoadSkinFrame(&out->skinframes[0], out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
4425                                         Con_Printf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4426                 }
4427                 // init the animation variables
4428                 out->currentframe = out;
4429                 out->currentskinframe = &out->skinframes[0];
4430         }
4431         if (c)
4432                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4433 }
4434
4435 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4436 {
4437         q3dplane_t *in;
4438         mplane_t *out;
4439         int i, count;
4440
4441         in = (q3dplane_t *)(mod_base + l->fileofs);
4442         if (l->filelen % sizeof(*in))
4443                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4444         count = l->filelen / sizeof(*in);
4445         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4446
4447         loadmodel->brush.data_planes = out;
4448         loadmodel->brush.num_planes = count;
4449
4450         for (i = 0;i < count;i++, in++, out++)
4451         {
4452                 out->normal[0] = LittleFloat(in->normal[0]);
4453                 out->normal[1] = LittleFloat(in->normal[1]);
4454                 out->normal[2] = LittleFloat(in->normal[2]);
4455                 out->dist = LittleFloat(in->dist);
4456                 PlaneClassify(out);
4457         }
4458 }
4459
4460 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4461 {
4462         q3dbrushside_t *in;
4463         q3mbrushside_t *out;
4464         int i, n, count;
4465
4466         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4467         if (l->filelen % sizeof(*in))
4468                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4469         count = l->filelen / sizeof(*in);
4470         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4471
4472         loadmodel->brush.data_brushsides = out;
4473         loadmodel->brush.num_brushsides = count;
4474
4475         for (i = 0;i < count;i++, in++, out++)
4476         {
4477                 n = LittleLong(in->planeindex);
4478                 if (n < 0 || n >= loadmodel->brush.num_planes)
4479                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4480                 out->plane = loadmodel->brush.data_planes + n;
4481                 n = LittleLong(in->textureindex);
4482                 if (n < 0 || n >= loadmodel->num_textures)
4483                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4484                 out->texture = loadmodel->data_textures + n;
4485         }
4486 }
4487
4488 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4489 {
4490         q3dbrush_t *in;
4491         q3mbrush_t *out;
4492         int i, j, n, c, count, maxplanes;
4493         colplanef_t *planes;
4494
4495         in = (q3dbrush_t *)(mod_base + l->fileofs);
4496         if (l->filelen % sizeof(*in))
4497                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4498         count = l->filelen / sizeof(*in);
4499         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4500
4501         loadmodel->brush.data_brushes = out;
4502         loadmodel->brush.num_brushes = count;
4503
4504         maxplanes = 0;
4505         planes = NULL;
4506
4507         for (i = 0;i < count;i++, in++, out++)
4508         {
4509                 n = LittleLong(in->firstbrushside);
4510                 c = LittleLong(in->numbrushsides);
4511                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4512                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4513                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4514                 out->numbrushsides = c;
4515                 n = LittleLong(in->textureindex);
4516                 if (n < 0 || n >= loadmodel->num_textures)
4517                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4518                 out->texture = loadmodel->data_textures + n;
4519
4520                 // make a list of mplane_t structs to construct a colbrush from
4521                 if (maxplanes < out->numbrushsides)
4522                 {
4523                         maxplanes = out->numbrushsides;
4524                         if (planes)
4525                                 Mem_Free(planes);
4526                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4527                 }
4528                 for (j = 0;j < out->numbrushsides;j++)
4529                 {
4530                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4531                         planes[j].dist = out->firstbrushside[j].plane->dist;
4532                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4533                         planes[j].texture = out->firstbrushside[j].texture;
4534                 }
4535                 // make the colbrush from the planes
4536                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4537         }
4538         if (planes)
4539                 Mem_Free(planes);
4540 }
4541
4542 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4543 {
4544         q3deffect_t *in;
4545         q3deffect_t *out;
4546         int i, n, count;
4547
4548         in = (q3deffect_t *)(mod_base + l->fileofs);
4549         if (l->filelen % sizeof(*in))
4550                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4551         count = l->filelen / sizeof(*in);
4552         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4553
4554         loadmodel->brushq3.data_effects = out;
4555         loadmodel->brushq3.num_effects = count;
4556
4557         for (i = 0;i < count;i++, in++, out++)
4558         {
4559                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4560                 n = LittleLong(in->brushindex);
4561                 if (n >= loadmodel->brush.num_brushes)
4562                 {
4563                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4564                         n = -1;
4565                 }
4566                 out->brushindex = n;
4567                 out->unknown = LittleLong(in->unknown);
4568         }
4569 }
4570
4571 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4572 {
4573         q3dvertex_t *in;
4574         int i, count;
4575
4576         in = (q3dvertex_t *)(mod_base + l->fileofs);
4577         if (l->filelen % sizeof(*in))
4578                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4579         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4580         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4581         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4582         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4583         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4584         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4585
4586         for (i = 0;i < count;i++, in++)
4587         {
4588                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4589                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4590                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4591                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4592                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4593                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4594                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4595                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4596                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4597                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4598                 // svector/tvector are calculated later in face loading
4599                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4600                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4601                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4602                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4603         }
4604 }
4605
4606 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4607 {
4608         int *in;
4609         int *out;
4610         int i, count;
4611
4612         in = (int *)(mod_base + l->fileofs);
4613         if (l->filelen % sizeof(int[3]))
4614                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4615         count = l->filelen / sizeof(*in);
4616         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4617
4618         loadmodel->brushq3.num_triangles = count / 3;
4619         loadmodel->brushq3.data_element3i = out;
4620
4621         for (i = 0;i < count;i++, in++, out++)
4622         {
4623                 *out = LittleLong(*in);
4624                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4625                 {
4626                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4627                         *out = 0;
4628                 }
4629         }
4630 }
4631
4632 static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
4633 {
4634         q3dlightmap_t *in;
4635         rtexture_t **out;
4636         int i, count;
4637         unsigned char *c;
4638
4639         if (!l->filelen)
4640                 return;
4641         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4642         if (l->filelen % sizeof(*in))
4643                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4644         count = l->filelen / sizeof(*in);
4645         out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4646
4647         loadmodel->brushq3.data_lightmaps = out;
4648         loadmodel->brushq3.num_lightmaps = count;
4649
4650         // deluxemapped q3bsp files have an even number of lightmaps, and surfaces
4651         // always index even numbered ones (0, 2, 4, ...), the odd numbered
4652         // lightmaps are the deluxemaps (light direction textures), so if we
4653         // encounter any odd numbered lightmaps it is not a deluxemapped bsp, it
4654         // is also not a deluxemapped bsp if it has an odd number of lightmaps or
4655         // less than 2
4656         loadmodel->brushq3.deluxemapping = true;
4657         loadmodel->brushq3.deluxemapping_modelspace = true;
4658         if (count < 2 || (count & 1))
4659                 loadmodel->brushq3.deluxemapping = false;
4660
4661         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4662         // reason when only one lightmap is used, which can throw off the
4663         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4664         // to see if the second lightmap is blank, if so it is not deluxemapped.
4665         if (count == 2)
4666         {
4667                 c = in[count - 1].rgb;
4668                 for (i = 0;i < 128*128*3;i++)
4669                         if (c[i])
4670                                 break;
4671                 if (i == 128*128*3)
4672                 {
4673                         // all pixels in the unused lightmap were black...
4674                         loadmodel->brushq3.deluxemapping = false;
4675                 }
4676         }
4677
4678         // further deluxemapping detection is done in Mod_Q3BSP_LoadFaces
4679
4680         for (i = 0;i < count;i++, in++, out++)
4681                 *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4682 }
4683
4684 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4685 {
4686         q3dface_t *in, *oldin;
4687         msurface_t *out, *oldout;
4688         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4689         //int *originalelement3i;
4690         //int *originalneighbor3i;
4691         float *originalvertex3f;
4692         //float *originalsvector3f;
4693         //float *originaltvector3f;
4694         float *originalnormal3f;
4695         float *originalcolor4f;
4696         float *originaltexcoordtexture2f;
4697         float *originaltexcoordlightmap2f;
4698         float *v;
4699
4700         in = (q3dface_t *)(mod_base + l->fileofs);
4701         if (l->filelen % sizeof(*in))
4702                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4703         count = l->filelen / sizeof(*in);
4704         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4705
4706         loadmodel->data_surfaces = out;
4707         loadmodel->num_surfaces = count;
4708
4709         // now that we have surfaces to look at, see if any of them index an odd numbered lightmap, if so this is not a deluxemapped bsp file
4710         if (loadmodel->brushq3.deluxemapping)
4711         {
4712                 for (i = 0;i < count;i++)
4713                 {
4714                         n = LittleLong(in[i].lightmapindex);
4715                         if (n >= 0 && ((n & 1) || n + 1 >= loadmodel->brushq3.num_lightmaps))
4716                         {
4717                                 loadmodel->brushq3.deluxemapping = false;
4718                                 break;
4719                         }
4720                 }
4721         }
4722         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4723
4724         i = 0;
4725         oldi = i;
4726         oldin = in;
4727         oldout = out;
4728         meshvertices = 0;
4729         meshtriangles = 0;
4730         for (;i < count;i++, in++, out++)
4731         {
4732                 // check face type first
4733                 type = LittleLong(in->type);
4734                 if (type != Q3FACETYPE_POLYGON
4735                  && type != Q3FACETYPE_PATCH
4736                  && type != Q3FACETYPE_MESH
4737                  && type != Q3FACETYPE_FLARE)
4738                 {
4739                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4740                         continue;
4741                 }
4742
4743                 n = LittleLong(in->textureindex);
4744                 if (n < 0 || n >= loadmodel->num_textures)
4745                 {
4746                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4747                         continue;
4748                 }
4749                 out->texture = loadmodel->data_textures + n;
4750                 n = LittleLong(in->effectindex);
4751                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4752                 {
4753                         if (developer.integer >= 100)
4754                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4755                         n = -1;
4756                 }
4757                 if (n == -1)
4758                         out->effect = NULL;
4759                 else
4760                         out->effect = loadmodel->brushq3.data_effects + n;
4761                 n = LittleLong(in->lightmapindex);
4762                 if (n >= loadmodel->brushq3.num_lightmaps)
4763                 {
4764                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
4765                         n = -1;
4766                 }
4767                 else if (n < 0)
4768                         n = -1;
4769                 if (n == -1)
4770                 {
4771                         out->lightmaptexture = NULL;
4772                         out->deluxemaptexture = r_texture_blanknormalmap;
4773                 }
4774                 else
4775                 {
4776                         out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
4777                         if (loadmodel->brushq3.deluxemapping)
4778                                 out->deluxemaptexture = loadmodel->brushq3.data_lightmaps[n+1];
4779                         else
4780                                 out->deluxemaptexture = r_texture_blanknormalmap;
4781                 }
4782
4783                 firstvertex = LittleLong(in->firstvertex);
4784                 numvertices = LittleLong(in->numvertices);
4785                 firstelement = LittleLong(in->firstelement);
4786                 numtriangles = LittleLong(in->numelements) / 3;
4787                 if (numtriangles * 3 != LittleLong(in->numelements))
4788                 {
4789                         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));
4790                         continue;
4791                 }
4792                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4793                 {
4794                         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);
4795                         continue;
4796                 }
4797                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4798                 {
4799                         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);
4800                         continue;
4801                 }
4802                 switch(type)
4803                 {
4804                 case Q3FACETYPE_POLYGON:
4805                 case Q3FACETYPE_MESH:
4806                         // no processing necessary
4807                         break;
4808                 case Q3FACETYPE_PATCH:
4809                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4810                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4811                         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))
4812                         {
4813                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4814                                 continue;
4815                         }
4816                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4817                         // convert patch to Q3FACETYPE_MESH
4818                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4819                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4820                         // bound to user settings
4821                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4822                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4823                         // bound to sanity settings
4824                         xtess = bound(1, xtess, 1024);
4825                         ytess = bound(1, ytess, 1024);
4826                         // bound to user limit on vertices
4827                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4828                         {
4829                                 if (xtess > ytess)
4830                                         xtess--;
4831                                 else
4832                                         ytess--;
4833                         }
4834                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4835                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4836                         numvertices = finalwidth * finalheight;
4837                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4838                         break;
4839                 case Q3FACETYPE_FLARE:
4840                         if (developer.integer >= 100)
4841                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4842                         // don't render it
4843                         continue;
4844                 }
4845                 out->num_vertices = numvertices;
4846                 out->num_triangles = numtriangles;
4847                 meshvertices += out->num_vertices;
4848                 meshtriangles += out->num_triangles;
4849         }
4850
4851         i = oldi;
4852         in = oldin;
4853         out = oldout;
4854         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4855         meshvertices = 0;
4856         meshtriangles = 0;
4857         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4858         {
4859                 if (out->num_vertices < 3 || out->num_triangles < 1)
4860                         continue;
4861
4862                 type = LittleLong(in->type);
4863                 firstvertex = LittleLong(in->firstvertex);
4864                 firstelement = LittleLong(in->firstelement);
4865                 out->num_firstvertex = meshvertices;
4866                 out->num_firsttriangle = meshtriangles;
4867                 switch(type)
4868                 {
4869                 case Q3FACETYPE_POLYGON:
4870                 case Q3FACETYPE_MESH:
4871                         // no processing necessary
4872                         for (j = 0;j < out->num_vertices;j++)
4873                         {
4874                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4875                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4876                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4877                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4878                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4879                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4880                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4881                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4882                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4883                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4884                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4885                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4886                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4887                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4888                         }
4889                         for (j = 0;j < out->num_triangles*3;j++)
4890                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4891                         break;
4892                 case Q3FACETYPE_PATCH:
4893                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4894                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4895                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4896                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4897                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4898                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4899                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4900                         // convert patch to Q3FACETYPE_MESH
4901                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4902                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4903                         // bound to user settings
4904                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4905                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4906                         // bound to sanity settings
4907                         xtess = bound(1, xtess, 1024);
4908                         ytess = bound(1, ytess, 1024);
4909                         // bound to user limit on vertices
4910                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4911                         {
4912                                 if (xtess > ytess)
4913                                         xtess--;
4914                                 else
4915                                         ytess--;
4916                         }
4917                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4918                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4919                         finalvertices = finalwidth * finalheight;
4920                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4921                         type = Q3FACETYPE_MESH;
4922                         // generate geometry
4923                         // (note: normals are skipped because they get recalculated)
4924                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4925                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4926                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4927                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4928                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4929                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4930                         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);
4931                         if (developer.integer >= 100)
4932                         {
4933                                 if (out->num_triangles < finaltriangles)
4934                                         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);
4935                                 else
4936                                         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);
4937                         }
4938                         // q3map does not put in collision brushes for curves... ugh
4939                         // build the lower quality collision geometry
4940                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4941                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4942                         // bound to user settings
4943                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4944                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4945                         // bound to sanity settings
4946                         xtess = bound(1, xtess, 1024);
4947                         ytess = bound(1, ytess, 1024);
4948                         // bound to user limit on vertices
4949                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4950                         {
4951                                 if (xtess > ytess)
4952                                         xtess--;
4953                                 else
4954                                         ytess--;
4955                         }
4956                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4957                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4958                         finalvertices = finalwidth * finalheight;
4959                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4960
4961                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4962                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4963                         out->num_collisionvertices = finalvertices;
4964                         out->num_collisiontriangles = finaltriangles;
4965                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4966                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4967
4968                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4969                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4970
4971                         oldnumtriangles = out->num_triangles;
4972                         oldnumtriangles2 = out->num_collisiontriangles;
4973                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4974                         if (developer.integer >= 100)
4975                                 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);
4976                         break;
4977                 default:
4978                         break;
4979                 }
4980                 meshvertices += out->num_vertices;
4981                 meshtriangles += out->num_triangles;
4982                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
4983                         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)
4984                                 invalidelements++;
4985                 if (invalidelements)
4986                 {
4987                         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);
4988                         for (j = 0;j < out->num_triangles * 3;j++)
4989                         {
4990                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
4991                                 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)
4992                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
4993                         }
4994                         Con_Print("\n");
4995                 }
4996                 // calculate a bounding box
4997                 VectorClear(out->mins);
4998                 VectorClear(out->maxs);
4999                 if (out->num_vertices)
5000                 {
5001                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5002                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5003                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5004                         {
5005                                 out->mins[0] = min(out->mins[0], v[0]);
5006                                 out->maxs[0] = max(out->maxs[0], v[0]);
5007                                 out->mins[1] = min(out->mins[1], v[1]);
5008                                 out->maxs[1] = max(out->maxs[1], v[1]);
5009                                 out->mins[2] = min(out->mins[2], v[2]);
5010                                 out->maxs[2] = max(out->maxs[2], v[2]);
5011                         }
5012                         out->mins[0] -= 1.0f;
5013                         out->mins[1] -= 1.0f;
5014                         out->mins[2] -= 1.0f;
5015                         out->maxs[0] += 1.0f;
5016                         out->maxs[1] += 1.0f;
5017                         out->maxs[2] += 1.0f;
5018                 }
5019                 // set lightmap styles for consistency with q1bsp
5020                 //out->lightmapinfo->styles[0] = 0;
5021                 //out->lightmapinfo->styles[1] = 255;
5022                 //out->lightmapinfo->styles[2] = 255;
5023                 //out->lightmapinfo->styles[3] = 255;
5024         }
5025
5026         // for per pixel lighting
5027         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);
5028
5029         // free the no longer needed vertex data
5030         loadmodel->brushq3.num_vertices = 0;
5031         if (loadmodel->brushq3.data_vertex3f)
5032                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5033         loadmodel->brushq3.data_vertex3f = NULL;
5034         loadmodel->brushq3.data_normal3f = NULL;
5035         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5036         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5037         loadmodel->brushq3.data_color4f = NULL;
5038         // free the no longer needed triangle data
5039         loadmodel->brushq3.num_triangles = 0;
5040         if (loadmodel->brushq3.data_element3i)
5041                 Mem_Free(loadmodel->brushq3.data_element3i);
5042         loadmodel->brushq3.data_element3i = NULL;
5043 }
5044
5045 static void Mod_Q3BSP_LoadModels(lump_t *l)
5046 {
5047         q3dmodel_t *in;
5048         q3dmodel_t *out;
5049         int i, j, n, c, count;
5050
5051         in = (q3dmodel_t *)(mod_base + l->fileofs);
5052         if (l->filelen % sizeof(*in))
5053                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5054         count = l->filelen / sizeof(*in);
5055         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5056
5057         loadmodel->brushq3.data_models = out;
5058         loadmodel->brushq3.num_models = count;
5059
5060         for (i = 0;i < count;i++, in++, out++)
5061         {
5062                 for (j = 0;j < 3;j++)
5063                 {
5064                         out->mins[j] = LittleFloat(in->mins[j]);
5065                         out->maxs[j] = LittleFloat(in->maxs[j]);
5066                 }
5067                 n = LittleLong(in->firstface);
5068                 c = LittleLong(in->numfaces);
5069                 if (n < 0 || n + c > loadmodel->num_surfaces)
5070                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5071                 out->firstface = n;
5072                 out->numfaces = c;
5073                 n = LittleLong(in->firstbrush);
5074                 c = LittleLong(in->numbrushes);
5075                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5076                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5077                 out->firstbrush = n;
5078                 out->numbrushes = c;
5079         }
5080 }
5081
5082 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5083 {
5084         int *in;
5085         int *out;
5086         int i, n, count;
5087
5088         in = (int *)(mod_base + l->fileofs);
5089         if (l->filelen % sizeof(*in))
5090                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5091         count = l->filelen / sizeof(*in);
5092         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5093
5094         loadmodel->brush.data_leafbrushes = out;
5095         loadmodel->brush.num_leafbrushes = count;
5096
5097         for (i = 0;i < count;i++, in++, out++)
5098         {
5099                 n = LittleLong(*in);
5100                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5101                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5102                 *out = n;
5103         }
5104 }
5105
5106 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5107 {
5108         int *in;
5109         int *out;
5110         int i, n, count;
5111
5112         in = (int *)(mod_base + l->fileofs);
5113         if (l->filelen % sizeof(*in))
5114                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5115         count = l->filelen / sizeof(*in);
5116         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5117
5118         loadmodel->brush.data_leafsurfaces = out;
5119         loadmodel->brush.num_leafsurfaces = count;
5120
5121         for (i = 0;i < count;i++, in++, out++)
5122         {
5123                 n = LittleLong(*in);
5124                 if (n < 0 || n >= loadmodel->num_surfaces)
5125                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5126                 *out = n;
5127         }
5128 }
5129
5130 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5131 {
5132         q3dleaf_t *in;
5133         mleaf_t *out;
5134         int i, j, n, c, count;
5135
5136         in = (q3dleaf_t *)(mod_base + l->fileofs);
5137         if (l->filelen % sizeof(*in))
5138                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5139         count = l->filelen / sizeof(*in);
5140         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5141
5142         loadmodel->brush.data_leafs = out;
5143         loadmodel->brush.num_leafs = count;
5144
5145         for (i = 0;i < count;i++, in++, out++)
5146         {
5147                 out->parent = NULL;
5148                 out->plane = NULL;
5149                 out->clusterindex = LittleLong(in->clusterindex);
5150                 out->areaindex = LittleLong(in->areaindex);
5151                 for (j = 0;j < 3;j++)
5152                 {
5153                         // yes the mins/maxs are ints
5154                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5155                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5156                 }
5157                 n = LittleLong(in->firstleafface);
5158                 c = LittleLong(in->numleaffaces);
5159                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5160                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5161                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5162                 out->numleafsurfaces = c;
5163                 n = LittleLong(in->firstleafbrush);
5164                 c = LittleLong(in->numleafbrushes);
5165                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5166                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5167                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5168                 out->numleafbrushes = c;
5169         }
5170 }
5171
5172 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5173 {
5174         q3dnode_t *in;
5175         mnode_t *out;
5176         int i, j, n, count;
5177
5178         in = (q3dnode_t *)(mod_base + l->fileofs);
5179         if (l->filelen % sizeof(*in))
5180                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5181         count = l->filelen / sizeof(*in);
5182         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5183
5184         loadmodel->brush.data_nodes = out;
5185         loadmodel->brush.num_nodes = count;
5186
5187         for (i = 0;i < count;i++, in++, out++)
5188         {
5189                 out->parent = NULL;
5190                 n = LittleLong(in->planeindex);
5191                 if (n < 0 || n >= loadmodel->brush.num_planes)
5192                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5193                 out->plane = loadmodel->brush.data_planes + n;
5194                 for (j = 0;j < 2;j++)
5195                 {
5196                         n = LittleLong(in->childrenindex[j]);
5197                         if (n >= 0)
5198                         {
5199                                 if (n >= loadmodel->brush.num_nodes)
5200                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5201                                 out->children[j] = loadmodel->brush.data_nodes + n;
5202                         }
5203                         else
5204                         {
5205                                 n = -1 - n;
5206                                 if (n >= loadmodel->brush.num_leafs)
5207                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5208                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5209                         }
5210                 }
5211                 for (j = 0;j < 3;j++)
5212                 {
5213                         // yes the mins/maxs are ints
5214                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5215                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5216                 }
5217         }
5218
5219         // set the parent pointers
5220         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5221 }
5222
5223 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5224 {
5225         q3dlightgrid_t *in;
5226         q3dlightgrid_t *out;
5227         int count;
5228
5229         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5230         if (l->filelen % sizeof(*in))
5231                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5232         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5233         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5234         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5235         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5236         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5237         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5238         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5239         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5240         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5241         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5242         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5243         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5244         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5245         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]);
5246         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]);
5247
5248         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5249         if (l->filelen)
5250         {
5251                 if (l->filelen < count * (int)sizeof(*in))
5252                         Host_Error("Mod_Q3BSP_LoadLightGrid: invalid lightgrid lump size %i bytes, should be %i bytes (%ix%ix%i)", l->filelen, (int)(count * sizeof(*in)), loadmodel->brushq3.num_lightgrid_dimensions[0], loadmodel->brushq3.num_lightgrid_dimensions[1], loadmodel->brushq3.num_lightgrid_dimensions[2]);
5253                 if (l->filelen != count * (int)sizeof(*in))
5254                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5255                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5256                 loadmodel->brushq3.data_lightgrid = out;
5257                 loadmodel->brushq3.num_lightgrid = count;
5258                 // no swapping or validation necessary
5259                 memcpy(out, in, count * (int)sizeof(*out));
5260         }
5261 }
5262
5263 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5264 {
5265         q3dpvs_t *in;
5266         int totalchains;
5267
5268         if (l->filelen == 0)
5269         {
5270                 int i;
5271                 // unvised maps often have cluster indices even without pvs, so check
5272                 // leafs to find real number of clusters
5273                 loadmodel->brush.num_pvsclusters = 1;
5274                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5275                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5276
5277                 // create clusters
5278                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5279                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5280                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5281                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5282                 return;
5283         }
5284
5285         in = (q3dpvs_t *)(mod_base + l->fileofs);
5286         if (l->filelen < 9)
5287                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5288
5289         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5290         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5291         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5292                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5293         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5294         if (l->filelen < totalchains + (int)sizeof(*in))
5295                 Host_Error("Mod_Q3BSP_LoadPVS: lump too small ((numclusters = %i) * (chainlength = %i) + sizeof(q3dpvs_t) == %i bytes, lump is %i bytes)", loadmodel->brush.num_pvsclusters, loadmodel->brush.num_pvsclusterbytes, (int)(totalchains + sizeof(*in)), l->filelen);
5296
5297         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5298         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5299 }
5300
5301 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5302 {
5303         int i, j, k, index[3];
5304         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch, stylescale;
5305         q3dlightgrid_t *a, *s;
5306
5307         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5308         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5309
5310         if (!model->brushq3.num_lightgrid)
5311         {
5312                 ambientcolor[0] = stylescale;
5313                 ambientcolor[1] = stylescale;
5314                 ambientcolor[2] = stylescale;
5315                 return;
5316         }
5317
5318         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5319         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5320         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5321         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5322         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5323         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5324         index[0] = (int)floor(transformed[0]);
5325         index[1] = (int)floor(transformed[1]);
5326         index[2] = (int)floor(transformed[2]);
5327         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5328
5329         // now lerp the values
5330         VectorClear(diffusenormal);
5331         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5332         for (k = 0;k < 2;k++)
5333         {
5334                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5335                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5336                         continue;
5337                 for (j = 0;j < 2;j++)
5338                 {
5339                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5340                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5341                                 continue;
5342                         for (i = 0;i < 2;i++)
5343                         {
5344                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5345                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5346                                         continue;
5347                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5348                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5349                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5350                                 pitch = s->diffusepitch * M_PI / 128;
5351                                 yaw = s->diffuseyaw * M_PI / 128;
5352                                 sinpitch = sin(pitch);
5353                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5354                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5355                                 diffusenormal[2] += blend * (cos(pitch));
5356                                 //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)));
5357                         }
5358                 }
5359         }
5360
5361         // normalize the light direction before turning
5362         VectorNormalize(diffusenormal);
5363         //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]);
5364 }
5365
5366 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5367 {
5368         int i;
5369         mleaf_t *leaf;
5370         colbrushf_t *brush;
5371         // find which leaf the point is in
5372         while (node->plane)
5373                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5374         // point trace the brushes
5375         leaf = (mleaf_t *)node;
5376         for (i = 0;i < leaf->numleafbrushes;i++)
5377         {
5378                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5379                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5380                 {
5381                         brush->markframe = markframe;
5382                         Collision_TracePointBrushFloat(trace, point, brush);
5383                 }
5384         }
5385         // can't do point traces on curves (they have no thickness)
5386 }
5387
5388 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)
5389 {
5390         int i, startside, endside;
5391         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5392         mleaf_t *leaf;
5393         msurface_t *surface;
5394         mplane_t *plane;
5395         colbrushf_t *brush;
5396         // walk the tree until we hit a leaf, recursing for any split cases
5397         while (node->plane)
5398         {
5399                 plane = node->plane;
5400                 // axial planes are much more common than non-axial, so an optimized
5401                 // axial case pays off here
5402                 if (plane->type < 3)
5403                 {
5404                         dist1 = start[plane->type] - plane->dist;
5405                         dist2 = end[plane->type] - plane->dist;
5406                 }
5407                 else
5408                 {
5409                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5410                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5411                 }
5412                 startside = dist1 < 0;
5413                 endside = dist2 < 0;
5414                 if (startside == endside)
5415                 {
5416                         // most of the time the line fragment is on one side of the plane
5417                         node = node->children[startside];
5418                 }
5419                 else
5420                 {
5421                         // line crosses node plane, split the line
5422                         dist1 = PlaneDiff(linestart, plane);
5423                         dist2 = PlaneDiff(lineend, plane);
5424                         midfrac = dist1 / (dist1 - dist2);
5425                         VectorLerp(linestart, midfrac, lineend, mid);
5426                         // take the near side first
5427                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5428                         // if we found an impact on the front side, don't waste time
5429                         // exploring the far side
5430                         if (midfrac <= trace->realfraction)
5431                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5432                         return;
5433                 }
5434         }
5435         // hit a leaf
5436         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5437         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5438         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5439         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5440         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5441         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5442         // line trace the brushes
5443         leaf = (mleaf_t *)node;
5444         for (i = 0;i < leaf->numleafbrushes;i++)
5445         {
5446                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5447                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5448                 {
5449                         brush->markframe = markframe;
5450                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5451                 }
5452         }
5453         // can't do point traces on curves (they have no thickness)
5454         if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5455         {
5456                 // line trace the curves
5457                 for (i = 0;i < leaf->numleafsurfaces;i++)
5458                 {
5459                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5460                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5461                         {
5462                                 surface->collisionmarkframe = markframe;
5463                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5464                         }
5465                 }
5466         }
5467 }
5468
5469 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)
5470 {
5471         int i;
5472         int sides;
5473         mleaf_t *leaf;
5474         colbrushf_t *brush;
5475         msurface_t *surface;
5476         mplane_t *plane;
5477         float nodesegmentmins[3], nodesegmentmaxs[3];
5478         // walk the tree until we hit a leaf, recursing for any split cases
5479         while (node->plane)
5480         {
5481                 plane = node->plane;
5482                 // axial planes are much more common than non-axial, so an optimized
5483                 // axial case pays off here
5484                 if (plane->type < 3)
5485                 {
5486                         // this is an axial plane, compare bounding box directly to it and
5487                         // recurse sides accordingly
5488                         // recurse down node sides
5489                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5490                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5491                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5492                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5493                 }
5494                 else
5495                 {
5496                         // this is a non-axial plane, so check if the start and end boxes
5497                         // are both on one side of the plane to handle 'diagonal' cases
5498                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5499                 }
5500                 if (sides == 3)
5501                 {
5502                         // segment crosses plane
5503                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5504                         sides = 2;
5505                 }
5506                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5507                 // in this case we simply pretend the trace hit nothing
5508                 if (sides == 0)
5509                         return; // ERROR: NAN bounding box!
5510                 // take whichever side the segment box is on
5511                 node = node->children[sides - 1];
5512         }
5513         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5514         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5515         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5516         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5517         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5518         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5519         // hit a leaf
5520         leaf = (mleaf_t *)node;
5521         for (i = 0;i < leaf->numleafbrushes;i++)
5522         {
5523                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5524                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5525                 {
5526                         brush->markframe = markframe;
5527                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5528                 }
5529         }
5530         if (mod_q3bsp_curves_collisions.integer)
5531         {
5532                 for (i = 0;i < leaf->numleafsurfaces;i++)
5533                 {
5534                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5535                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5536                         {
5537                                 surface->collisionmarkframe = markframe;
5538                                 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);
5539                         }
5540                 }
5541         }
5542 }
5543
5544 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)
5545 {
5546         int i;
5547         float segmentmins[3], segmentmaxs[3];
5548         static int markframe = 0;
5549         msurface_t *surface;
5550         q3mbrush_t *brush;
5551         memset(trace, 0, sizeof(*trace));
5552         trace->fraction = 1;
5553         trace->realfraction = 1;
5554         trace->hitsupercontentsmask = hitsupercontentsmask;
5555         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5556         {
5557                 if (VectorCompare(start, end))
5558                 {
5559                         // point trace
5560                         if (model->brush.submodel)
5561                         {
5562                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5563                                         if (brush->colbrushf)
5564                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5565                         }
5566                         else
5567                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5568                 }
5569                 else
5570                 {
5571                         // line trace
5572                         segmentmins[0] = min(start[0], end[0]) - 1;
5573                         segmentmins[1] = min(start[1], end[1]) - 1;
5574                         segmentmins[2] = min(start[2], end[2]) - 1;
5575                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5576                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5577                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5578                         if (model->brush.submodel)
5579                         {
5580                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5581                                         if (brush->colbrushf)
5582                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5583                                 if (mod_q3bsp_curves_collisions.integer)
5584                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5585                                                 if (surface->num_collisiontriangles)
5586                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5587                         }
5588                         else
5589                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5590                 }
5591         }
5592         else
5593         {
5594                 // box trace, performed as brush trace
5595                 colbrushf_t *thisbrush_start, *thisbrush_end;
5596                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5597                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5598                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5599                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5600                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5601                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5602                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5603                 VectorAdd(start, boxmins, boxstartmins);
5604                 VectorAdd(start, boxmaxs, boxstartmaxs);
5605                 VectorAdd(end, boxmins, boxendmins);
5606                 VectorAdd(end, boxmaxs, boxendmaxs);
5607                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5608                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5609                 if (model->brush.submodel)
5610                 {
5611                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5612                                 if (brush->colbrushf)
5613                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5614                         if (mod_q3bsp_curves_collisions.integer)
5615                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5616                                         if (surface->num_collisiontriangles)
5617                                                 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);
5618                 }
5619                 else
5620                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5621         }
5622 }
5623
5624 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5625 {
5626         int supercontents = 0;
5627         if (nativecontents & CONTENTSQ3_SOLID)
5628                 supercontents |= SUPERCONTENTS_SOLID;
5629         if (nativecontents & CONTENTSQ3_WATER)
5630                 supercontents |= SUPERCONTENTS_WATER;
5631         if (nativecontents & CONTENTSQ3_SLIME)
5632                 supercontents |= SUPERCONTENTS_SLIME;
5633         if (nativecontents & CONTENTSQ3_LAVA)
5634                 supercontents |= SUPERCONTENTS_LAVA;
5635         if (nativecontents & CONTENTSQ3_BODY)
5636                 supercontents |= SUPERCONTENTS_BODY;
5637         if (nativecontents & CONTENTSQ3_CORPSE)
5638                 supercontents |= SUPERCONTENTS_CORPSE;
5639         if (nativecontents & CONTENTSQ3_NODROP)
5640                 supercontents |= SUPERCONTENTS_NODROP;
5641         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5642                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5643         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5644                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5645         if (nativecontents & CONTENTSQ3_DONOTENTER)
5646                 supercontents |= SUPERCONTENTS_DONOTENTER;
5647         return supercontents;
5648 }
5649
5650 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5651 {
5652         int nativecontents = 0;
5653         if (supercontents & SUPERCONTENTS_SOLID)
5654                 nativecontents |= CONTENTSQ3_SOLID;
5655         if (supercontents & SUPERCONTENTS_WATER)
5656                 nativecontents |= CONTENTSQ3_WATER;
5657         if (supercontents & SUPERCONTENTS_SLIME)
5658                 nativecontents |= CONTENTSQ3_SLIME;
5659         if (supercontents & SUPERCONTENTS_LAVA)
5660                 nativecontents |= CONTENTSQ3_LAVA;
5661         if (supercontents & SUPERCONTENTS_BODY)
5662                 nativecontents |= CONTENTSQ3_BODY;
5663         if (supercontents & SUPERCONTENTS_CORPSE)
5664                 nativecontents |= CONTENTSQ3_CORPSE;
5665         if (supercontents & SUPERCONTENTS_NODROP)
5666                 nativecontents |= CONTENTSQ3_NODROP;
5667         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5668                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5669         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5670                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5671         if (supercontents & SUPERCONTENTS_DONOTENTER)
5672                 nativecontents |= CONTENTSQ3_DONOTENTER;
5673         return nativecontents;
5674 }
5675
5676 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5677 {
5678         int numleafs;
5679         while (node->plane)
5680         {
5681                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5682                 node = node->children[1];
5683         }
5684         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5685         if (loadmodel->brush.num_leafs < numleafs)
5686                 loadmodel->brush.num_leafs = numleafs;
5687 }
5688
5689 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5690 {
5691         int i, j, numshadowmeshtriangles;
5692         q3dheader_t *header;
5693         float corner[3], yawradius, modelradius;
5694         msurface_t *surface;
5695
5696         mod->type = mod_brushq3;
5697         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5698         mod->numskins = 1;
5699
5700         header = (q3dheader_t *)buffer;
5701
5702         i = LittleLong(header->version);
5703         if (i != Q3BSPVERSION)
5704                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5705         mod->brush.ishlbsp = false;
5706         mod->brush.ismcbsp = false;
5707         if (loadmodel->isworldmodel)
5708         {
5709                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5710                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5711         }
5712
5713         mod->soundfromcenter = true;
5714         mod->TraceBox = Mod_Q3BSP_TraceBox;
5715         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5716         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5717         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5718         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5719         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5720         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5721         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5722         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5723         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5724         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5725         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5726         mod->Draw = R_Q1BSP_Draw;
5727         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5728         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5729         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5730         mod->DrawLight = R_Q1BSP_DrawLight;
5731
5732         mod_base = (unsigned char *)header;
5733
5734         // swap all the lumps
5735         header->ident = LittleLong(header->ident);
5736         header->version = LittleLong(header->version);
5737         for (i = 0;i < Q3HEADER_LUMPS;i++)
5738         {
5739                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5740                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5741         }
5742
5743         mod->brush.qw_md4sum = 0;
5744         mod->brush.qw_md4sum2 = 0;
5745         for (i = 0;i < Q3HEADER_LUMPS;i++)
5746         {
5747                 if (i == Q3LUMP_ENTITIES)
5748                         continue;
5749                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5750                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5751                         continue;
5752                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5753         }
5754
5755         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5756         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5757         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5758         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5759         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5760         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5761         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5762         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5763         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
5764         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5765         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5766         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5767         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5768         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5769         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5770         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5771         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5772         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5773
5774         // the MakePortals code works fine on the q3bsp data as well
5775         Mod_Q1BSP_MakePortals();
5776
5777         // make a single combined shadow mesh to allow optimized shadow volume creation
5778         numshadowmeshtriangles = 0;
5779         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5780         {
5781                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5782                 numshadowmeshtriangles += surface->num_triangles;
5783         }
5784         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5785         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5786                 if (surface->num_triangles > 0)
5787                         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));
5788         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
5789         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5790
5791         loadmodel->brush.num_leafs = 0;
5792         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5793
5794         if (loadmodel->isworldmodel)
5795         {
5796                 // clear out any stale submodels or worldmodels lying around
5797                 // if we did this clear before now, an error might abort loading and
5798                 // leave things in a bad state
5799                 Mod_RemoveStaleWorldModels(loadmodel);
5800         }
5801
5802         mod = loadmodel;
5803         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5804         {
5805                 if (i > 0)
5806                 {
5807                         char name[10];
5808                         // LordHavoc: only register submodels if it is the world
5809                         // (prevents external bsp models from replacing world submodels with
5810                         //  their own)
5811                         if (!loadmodel->isworldmodel)
5812                                 continue;
5813                         // duplicate the basic information
5814                         sprintf(name, "*%i", i);
5815                         mod = Mod_FindName(name);
5816                         *mod = *loadmodel;
5817                         strlcpy(mod->name, name, sizeof(mod->name));
5818                         // textures and memory belong to the main model
5819                         mod->texturepool = NULL;
5820                         mod->mempool = NULL;
5821                         mod->brush.GetPVS = NULL;
5822                         mod->brush.FatPVS = NULL;
5823                         mod->brush.BoxTouchingPVS = NULL;
5824                         mod->brush.BoxTouchingLeafPVS = NULL;
5825                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5826                         mod->brush.FindBoxClusters = NULL;
5827                         mod->brush.LightPoint = NULL;
5828                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5829                 }
5830                 mod->brush.submodel = i;
5831
5832                 // make the model surface list (used by shadowing/lighting)
5833                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5834                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5835                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5836                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5837                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5838                 for (j = 0;j < mod->nummodelsurfaces;j++)
5839                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5840
5841                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5842                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5843                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5844                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5845                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5846                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5847                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5848                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5849                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5850                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5851                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5852                 mod->yawmins[2] = mod->normalmins[2];
5853                 mod->yawmaxs[2] = mod->normalmaxs[2];
5854                 mod->radius = modelradius;
5855                 mod->radius2 = modelradius * modelradius;
5856
5857                 for (j = 0;j < mod->nummodelsurfaces;j++)
5858                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
5859                                 break;
5860                 if (j < mod->nummodelsurfaces)
5861                         mod->DrawSky = R_Q1BSP_DrawSky;
5862         }
5863 }
5864
5865 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
5866 {
5867         int i = LittleLong(((int *)buffer)[1]);
5868         if (i == Q3BSPVERSION)
5869                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5870         else if (i == Q2BSPVERSION)
5871                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5872         else
5873                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5874 }
5875
5876 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
5877 {
5878         Host_Error("Mod_MAP_Load: not yet implemented");
5879 }
5880