model_brush.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20
  21 #include "quakedef.h"
  22 #include "image.h"
  23 #include "r_shadow.h"
  24 #include "polygon.h"
  25 #include "curves.h"
  26 #include "wad.h"
  27
  28
  29 //cvar_t r_subdivide_size = {CVAR_SAVE, "r_subdivide_size", "128", "how large water polygons should be (smaller values produce more polygons which give better warping effects)"};
  30 cvar_t halflifebsp = {0, "halflifebsp", "0", "indicates the current map is hlbsp format (useful to know because of different bounding box sizes)"};
  31 cvar_t mcbsp = {0, "mcbsp", "0", "indicates the current map is mcbsp format (useful to know because of different bounding box sizes)"};
  32 cvar_t r_novis = {0, "r_novis", "0", "draws whole level, see also sv_cullentities_pvs 0"};
  33 cvar_t r_lightmaprgba = {0, "r_lightmaprgba", "1", "whether to use RGBA (32bit) or RGB (24bit) lightmaps"};
  34 cvar_t r_nosurftextures = {0, "r_nosurftextures", "0", "pretends there was no texture lump found in the q1bsp/hlbsp loading (useful for debugging this rare case)"};
  35 cvar_t r_subdivisions_tolerance = {0, "r_subdivisions_tolerance", "4", "maximum error tolerance on curve subdivision for rendering purposes (in other words, the curves will be given as many polygons as necessary to represent curves at this quality)"};
  36 cvar_t r_subdivisions_mintess = {0, "r_subdivisions_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  37 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  38 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  39 cvar_t r_subdivisions_collision_tolerance = {0, "r_subdivisions_collision_tolerance", "15", "maximum error tolerance on curve subdivision for collision purposes (usually a larger error tolerance than for rendering)"};
  40 cvar_t r_subdivisions_collision_mintess = {0, "r_subdivisions_collision_mintess", "1", "minimum number of subdivisions (values above 1 will smooth curves that don't need it)"};
  41 cvar_t r_subdivisions_collision_maxtess = {0, "r_subdivisions_collision_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  42 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  43 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  44 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  45 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  46
  47 static texture_t mod_q1bsp_texture_solid;
  48 static texture_t mod_q1bsp_texture_sky;
  49 static texture_t mod_q1bsp_texture_lava;
  50 static texture_t mod_q1bsp_texture_slime;
  51 static texture_t mod_q1bsp_texture_water;
  52
  53 void Mod_BrushInit(void)
  54 {
  55 //      Cvar_RegisterVariable(&r_subdivide_size);
  56         Cvar_RegisterVariable(&halflifebsp);
  57         Cvar_RegisterVariable(&mcbsp);
  58         Cvar_RegisterVariable(&r_novis);
  59         Cvar_RegisterVariable(&r_lightmaprgba);
  60         Cvar_RegisterVariable(&r_nosurftextures);
  61         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  62         Cvar_RegisterVariable(&r_subdivisions_mintess);
  63         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  64         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  65         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  66         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  67         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  69         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  70         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  71         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  72
  73         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  74         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  75         mod_q1bsp_texture_solid.surfaceflags = 0;
  76         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  77
  78         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  79         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  80         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  81         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  82
  83         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  84         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  85         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  86         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  87
  88         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  89         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  90         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  91         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  92
  93         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
  94         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
  95         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  96         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
  97 }
  98
  99 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 100 {
 101         mnode_t *node;
 102
 103         if (model == NULL)
 104                 return NULL;
 105
 106         // LordHavoc: modified to start at first clip node,
 107         // in other words: first node of the (sub)model
 108         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 109         while (node->plane)
 110                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 111
 112         return (mleaf_t *)node;
 113 }
 114
 115 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, unsigned char *out, int outsize)
 116 {
 117         int i;
 118         mleaf_t *leaf;
 119         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 120         if (leaf)
 121         {
 122                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 123                 if (i)
 124                 {
 125                         memcpy(out, leaf->ambient_sound_level, i);
 126                         out += i;
 127                         outsize -= i;
 128                 }
 129         }
 130         if (outsize)
 131                 memset(out, 0, outsize);
 132 }
 133
 134 static int Mod_Q1BSP_FindBoxClusters(model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 135 {
 136         int numclusters = 0;
 137         int nodestackindex = 0;
 138         mnode_t *node, *nodestack[1024];
 139         if (!model->brush.num_pvsclusters)
 140                 return -1;
 141         node = model->brush.data_nodes;
 142         for (;;)
 143         {
 144 #if 1
 145                 if (node->plane)
 146                 {
 147                         // node - recurse down the BSP tree
 148                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 149                         if (sides < 3)
 150                         {
 151                                 if (sides == 0)
 152                                         return -1; // ERROR: NAN bounding box!
 153                                 // box is on one side of plane, take that path
 154                                 node = node->children[sides-1];
 155                         }
 156                         else
 157                         {
 158                                 // box crosses plane, take one path and remember the other
 159                                 if (nodestackindex < 1024)
 160                                         nodestack[nodestackindex++] = node->children[0];
 161                                 node = node->children[1];
 162                         }
 163                         continue;
 164                 }
 165                 else
 166                 {
 167                         // leaf - add clusterindex to list
 168                         if (numclusters < maxclusters)
 169                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 170                         numclusters++;
 171                 }
 172 #else
 173                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 174                 {
 175                         if (node->plane)
 176                         {
 177                                 if (nodestackindex < 1024)
 178                                         nodestack[nodestackindex++] = node->children[0];
 179                                 node = node->children[1];
 180                                 continue;
 181                         }
 182                         else
 183                         {
 184                                 // leaf - add clusterindex to list
 185                                 if (numclusters < maxclusters)
 186                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 187                                 numclusters++;
 188                         }
 189                 }
 190 #endif
 191                 // try another path we didn't take earlier
 192                 if (nodestackindex == 0)
 193                         break;
 194                 node = nodestack[--nodestackindex];
 195         }
 196         // return number of clusters found (even if more than the maxclusters)
 197         return numclusters;
 198 }
 199
 200 static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 201 {
 202         int nodestackindex = 0;
 203         mnode_t *node, *nodestack[1024];
 204         if (!model->brush.num_pvsclusters)
 205                 return true;
 206         node = model->brush.data_nodes;
 207         for (;;)
 208         {
 209 #if 1
 210                 if (node->plane)
 211                 {
 212                         // node - recurse down the BSP tree
 213                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 214                         if (sides < 3)
 215                         {
 216                                 if (sides == 0)
 217                                         return -1; // ERROR: NAN bounding box!
 218                                 // box is on one side of plane, take that path
 219                                 node = node->children[sides-1];
 220                         }
 221                         else
 222                         {
 223                                 // box crosses plane, take one path and remember the other
 224                                 if (nodestackindex < 1024)
 225                                         nodestack[nodestackindex++] = node->children[0];
 226                                 node = node->children[1];
 227                         }
 228                         continue;
 229                 }
 230                 else
 231                 {
 232                         // leaf - check cluster bit
 233                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 234                         if (CHECKPVSBIT(pvs, clusterindex))
 235                         {
 236                                 // it is visible, return immediately with the news
 237                                 return true;
 238                         }
 239                 }
 240 #else
 241                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 242                 {
 243                         if (node->plane)
 244                         {
 245                                 if (nodestackindex < 1024)
 246                                         nodestack[nodestackindex++] = node->children[0];
 247                                 node = node->children[1];
 248                                 continue;
 249                         }
 250                         else
 251                         {
 252                                 // leaf - check cluster bit
 253                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 254                                 if (CHECKPVSBIT(pvs, clusterindex))
 255                                 {
 256                                         // it is visible, return immediately with the news
 257                                         return true;
 258                                 }
 259                         }
 260                 }
 261 #endif
 262                 // nothing to see here, try another path we didn't take earlier
 263                 if (nodestackindex == 0)
 264                         break;
 265                 node = nodestack[--nodestackindex];
 266         }
 267         // it is not visible
 268         return false;
 269 }
 270
 271 static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 272 {
 273         int nodestackindex = 0;
 274         mnode_t *node, *nodestack[1024];
 275         if (!model->brush.num_leafs)
 276                 return true;
 277         node = model->brush.data_nodes;
 278         for (;;)
 279         {
 280 #if 1
 281                 if (node->plane)
 282                 {
 283                         // node - recurse down the BSP tree
 284                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 285                         if (sides < 3)
 286                         {
 287                                 if (sides == 0)
 288                                         return -1; // ERROR: NAN bounding box!
 289                                 // box is on one side of plane, take that path
 290                                 node = node->children[sides-1];
 291                         }
 292                         else
 293                         {
 294                                 // box crosses plane, take one path and remember the other
 295                                 if (nodestackindex < 1024)
 296                                         nodestack[nodestackindex++] = node->children[0];
 297                                 node = node->children[1];
 298                         }
 299                         continue;
 300                 }
 301                 else
 302                 {
 303                         // leaf - check cluster bit
 304                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 305                         if (CHECKPVSBIT(pvs, clusterindex))
 306                         {
 307                                 // it is visible, return immediately with the news
 308                                 return true;
 309                         }
 310                 }
 311 #else
 312                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 313                 {
 314                         if (node->plane)
 315                         {
 316                                 if (nodestackindex < 1024)
 317                                         nodestack[nodestackindex++] = node->children[0];
 318                                 node = node->children[1];
 319                                 continue;
 320                         }
 321                         else
 322                         {
 323                                 // leaf - check cluster bit
 324                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 325                                 if (CHECKPVSBIT(pvs, clusterindex))
 326                                 {
 327                                         // it is visible, return immediately with the news
 328                                         return true;
 329                                 }
 330                         }
 331                 }
 332 #endif
 333                 // nothing to see here, try another path we didn't take earlier
 334                 if (nodestackindex == 0)
 335                         break;
 336                 node = nodestack[--nodestackindex];
 337         }
 338         // it is not visible
 339         return false;
 340 }
 341
 342 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 343 {
 344         int nodestackindex = 0;
 345         mnode_t *node, *nodestack[1024];
 346         if (!model->brush.num_leafs)
 347                 return true;
 348         node = model->brush.data_nodes;
 349         for (;;)
 350         {
 351 #if 1
 352                 if (node->plane)
 353                 {
 354                         // node - recurse down the BSP tree
 355                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 356                         if (sides < 3)
 357                         {
 358                                 if (sides == 0)
 359                                         return -1; // ERROR: NAN bounding box!
 360                                 // box is on one side of plane, take that path
 361                                 node = node->children[sides-1];
 362                         }
 363                         else
 364                         {
 365                                 // box crosses plane, take one path and remember the other
 366                                 if (nodestackindex < 1024)
 367                                         nodestack[nodestackindex++] = node->children[0];
 368                                 node = node->children[1];
 369                         }
 370                         continue;
 371                 }
 372                 else
 373                 {
 374                         // leaf - check if it is visible
 375                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 376                         {
 377                                 // it is visible, return immediately with the news
 378                                 return true;
 379                         }
 380                 }
 381 #else
 382                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 383                 {
 384                         if (node->plane)
 385                         {
 386                                 if (nodestackindex < 1024)
 387                                         nodestack[nodestackindex++] = node->children[0];
 388                                 node = node->children[1];
 389                                 continue;
 390                         }
 391                         else
 392                         {
 393                                 // leaf - check if it is visible
 394                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 395                                 {
 396                                         // it is visible, return immediately with the news
 397                                         return true;
 398                                 }
 399                         }
 400                 }
 401 #endif
 402                 // nothing to see here, try another path we didn't take earlier
 403                 if (nodestackindex == 0)
 404                         break;
 405                 node = nodestack[--nodestackindex];
 406         }
 407         // it is not visible
 408         return false;
 409 }
 410
 411 typedef struct findnonsolidlocationinfo_s
 412 {
 413         vec3_t center;
 414         vec_t radius;
 415         vec3_t nudge;
 416         vec_t bestdist;
 417         model_t *model;
 418 }
 419 findnonsolidlocationinfo_t;
 420
 421 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 422 {
 423         int i, surfacenum, k, *tri, *mark;
 424         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 425         msurface_t *surface;
 426         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 427         {
 428                 surface = info->model->data_surfaces + *mark;
 429                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 430                 {
 431                         for (k = 0;k < surface->num_triangles;k++)
 432                         {
 433                                 tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 434                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 435                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 436                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 437                                 VectorSubtract(vert[1], vert[0], edge[0]);
 438                                 VectorSubtract(vert[2], vert[1], edge[1]);
 439                                 CrossProduct(edge[1], edge[0], facenormal);
 440                                 if (facenormal[0] || facenormal[1] || facenormal[2])
 441                                 {
 442                                         VectorNormalize(facenormal);
 443                                         f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 444                                         if (f <= info->bestdist && f >= -info->bestdist)
 445                                         {
 446                                                 VectorSubtract(vert[0], vert[2], edge[2]);
 447                                                 VectorNormalize(edge[0]);
 448                                                 VectorNormalize(edge[1]);
 449                                                 VectorNormalize(edge[2]);
 450                                                 CrossProduct(facenormal, edge[0], edgenormal[0]);
 451                                                 CrossProduct(facenormal, edge[1], edgenormal[1]);
 452                                                 CrossProduct(facenormal, edge[2], edgenormal[2]);
 453                                                 // face distance
 454                                                 if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 455                                                  && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 456                                                  && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 457                                                 {
 458                                                         // we got lucky, the center is within the face
 459                                                         dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 460                                                         if (dist < 0)
 461                                                         {
 462                                                                 dist = -dist;
 463                                                                 if (info->bestdist > dist)
 464                                                                 {
 465                                                                         info->bestdist = dist;
 466                                                                         VectorScale(facenormal, (info->radius - -dist), info->nudge);
 467                                                                 }
 468                                                         }
 469                                                         else
 470                                                         {
 471                                                                 if (info->bestdist > dist)
 472                                                                 {
 473                                                                         info->bestdist = dist;
 474                                                                         VectorScale(facenormal, (info->radius - dist), info->nudge);
 475                                                                 }
 476                                                         }
 477                                                 }
 478                                                 else
 479                                                 {
 480                                                         // check which edge or vertex the center is nearest
 481                                                         for (i = 0;i < 3;i++)
 482                                                         {
 483                                                                 f = DotProduct(info->center, edge[i]);
 484                                                                 if (f >= DotProduct(vert[0], edge[i])
 485                                                                  && f <= DotProduct(vert[1], edge[i]))
 486                                                                 {
 487                                                                         // on edge
 488                                                                         VectorMA(info->center, -f, edge[i], point);
 489                                                                         dist = sqrt(DotProduct(point, point));
 490                                                                         if (info->bestdist > dist)
 491                                                                         {
 492                                                                                 info->bestdist = dist;
 493                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 494                                                                         }
 495                                                                         // skip both vertex checks
 496                                                                         // (both are further away than this edge)
 497                                                                         i++;
 498                                                                 }
 499                                                                 else
 500                                                                 {
 501                                                                         // not on edge, check first vertex of edge
 502                                                                         VectorSubtract(info->center, vert[i], point);
 503                                                                         dist = sqrt(DotProduct(point, point));
 504                                                                         if (info->bestdist > dist)
 505                                                                         {
 506                                                                                 info->bestdist = dist;
 507                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 508                                                                         }
 509                                                                 }
 510                                                         }
 511                                                 }
 512                                         }
 513                                 }
 514                         }
 515                 }
 516         }
 517 }
 518
 519 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 520 {
 521         if (node->plane)
 522         {
 523                 float f = PlaneDiff(info->center, node->plane);
 524                 if (f >= -info->bestdist)
 525                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 526                 if (f <= info->bestdist)
 527                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 528         }
 529         else
 530         {
 531                 if (((mleaf_t *)node)->numleafsurfaces)
 532                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 533         }
 534 }
 535
 536 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
 537 {
 538         int i;
 539         findnonsolidlocationinfo_t info;
 540         if (model == NULL)
 541         {
 542                 VectorCopy(in, out);
 543                 return;
 544         }
 545         VectorCopy(in, info.center);
 546         info.radius = radius;
 547         info.model = model;
 548         i = 0;
 549         do
 550         {
 551                 VectorClear(info.nudge);
 552                 info.bestdist = radius;
 553                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 554                 VectorAdd(info.center, info.nudge, info.center);
 555         }
 556         while (info.bestdist < radius && ++i < 10);
 557         VectorCopy(info.center, out);
 558 }
 559
 560 int Mod_Q1BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 561 {
 562         switch(nativecontents)
 563         {
 564                 case CONTENTS_EMPTY:
 565                         return 0;
 566                 case CONTENTS_SOLID:
 567                         return SUPERCONTENTS_SOLID;
 568                 case CONTENTS_WATER:
 569                         return SUPERCONTENTS_WATER;
 570                 case CONTENTS_SLIME:
 571                         return SUPERCONTENTS_SLIME;
 572                 case CONTENTS_LAVA:
 573                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 574                 case CONTENTS_SKY:
 575                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 576         }
 577         return 0;
 578 }
 579
 580 int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
 581 {
 582         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 583                 return CONTENTS_SOLID;
 584         if (supercontents & SUPERCONTENTS_SKY)
 585                 return CONTENTS_SKY;
 586         if (supercontents & SUPERCONTENTS_LAVA)
 587                 return CONTENTS_LAVA;
 588         if (supercontents & SUPERCONTENTS_SLIME)
 589                 return CONTENTS_SLIME;
 590         if (supercontents & SUPERCONTENTS_WATER)
 591                 return CONTENTS_WATER;
 592         return CONTENTS_EMPTY;
 593 }
 594
 595 typedef struct RecursiveHullCheckTraceInfo_s
 596 {
 597         // the hull we're tracing through
 598         const hull_t *hull;
 599
 600         // the trace structure to fill in
 601         trace_t *trace;
 602
 603         // start, end, and end - start (in model space)
 604         double start[3];
 605         double end[3];
 606         double dist[3];
 607 }
 608 RecursiveHullCheckTraceInfo_t;
 609
 610 // 1/32 epsilon to keep floating point happy
 611 #define DIST_EPSILON (0.03125)
 612
 613 #define HULLCHECKSTATE_EMPTY 0
 614 #define HULLCHECKSTATE_SOLID 1
 615 #define HULLCHECKSTATE_DONE 2
 616
 617 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 618 {
 619         // status variables, these don't need to be saved on the stack when
 620         // recursing...  but are because this should be thread-safe
 621         // (note: tracing against a bbox is not thread-safe, yet)
 622         int ret;
 623         mplane_t *plane;
 624         double t1, t2;
 625
 626         // variables that need to be stored on the stack when recursing
 627         dclipnode_t *node;
 628         int side;
 629         double midf, mid[3];
 630
 631         // LordHavoc: a goto!  everyone flee in terror... :)
 632 loc0:
 633         // check for empty
 634         if (num < 0)
 635         {
 636                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 637                 if (!t->trace->startfound)
 638                 {
 639                         t->trace->startfound = true;
 640                         t->trace->startsupercontents |= num;
 641                 }
 642                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 643                         t->trace->inwater = true;
 644                 if (num == 0)
 645                         t->trace->inopen = true;
 646                 if (num & SUPERCONTENTS_SOLID)
 647                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 648                 else if (num & SUPERCONTENTS_SKY)
 649                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 650                 else if (num & SUPERCONTENTS_LAVA)
 651                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 652                 else if (num & SUPERCONTENTS_SLIME)
 653                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 654                 else
 655                         t->trace->hittexture = &mod_q1bsp_texture_water;
 656                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 657                 t->trace->hitsupercontents = num;
 658                 if (num & t->trace->hitsupercontentsmask)
 659                 {
 660                         // if the first leaf is solid, set startsolid
 661                         if (t->trace->allsolid)
 662                                 t->trace->startsolid = true;
 663 #if COLLISIONPARANOID >= 3
 664                         Con_Print("S");
 665 #endif
 666                         return HULLCHECKSTATE_SOLID;
 667                 }
 668                 else
 669                 {
 670                         t->trace->allsolid = false;
 671 #if COLLISIONPARANOID >= 3
 672                         Con_Print("E");
 673 #endif
 674                         return HULLCHECKSTATE_EMPTY;
 675                 }
 676         }
 677
 678         // find the point distances
 679         node = t->hull->clipnodes + num;
 680
 681         plane = t->hull->planes + node->planenum;
 682         if (plane->type < 3)
 683         {
 684                 t1 = p1[plane->type] - plane->dist;
 685                 t2 = p2[plane->type] - plane->dist;
 686         }
 687         else
 688         {
 689                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 690                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 691         }
 692
 693         if (t1 < 0)
 694         {
 695                 if (t2 < 0)
 696                 {
 697 #if COLLISIONPARANOID >= 3
 698                         Con_Print("<");
 699 #endif
 700                         num = node->children[1];
 701                         goto loc0;
 702                 }
 703                 side = 1;
 704         }
 705         else
 706         {
 707                 if (t2 >= 0)
 708                 {
 709 #if COLLISIONPARANOID >= 3
 710                         Con_Print(">");
 711 #endif
 712                         num = node->children[0];
 713                         goto loc0;
 714                 }
 715                 side = 0;
 716         }
 717
 718         // the line intersects, find intersection point
 719         // LordHavoc: this uses the original trace for maximum accuracy
 720 #if COLLISIONPARANOID >= 3
 721         Con_Print("M");
 722 #endif
 723         if (plane->type < 3)
 724         {
 725                 t1 = t->start[plane->type] - plane->dist;
 726                 t2 = t->end[plane->type] - plane->dist;
 727         }
 728         else
 729         {
 730                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 731                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 732         }
 733
 734         midf = t1 / (t1 - t2);
 735         midf = bound(p1f, midf, p2f);
 736         VectorMA(t->start, midf, t->dist, mid);
 737
 738         // recurse both sides, front side first
 739         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 740         // if this side is not empty, return what it is (solid or done)
 741         if (ret != HULLCHECKSTATE_EMPTY)
 742                 return ret;
 743
 744         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 745         // if other side is not solid, return what it is (empty or done)
 746         if (ret != HULLCHECKSTATE_SOLID)
 747                 return ret;
 748
 749         // front is air and back is solid, this is the impact point...
 750         if (side)
 751         {
 752                 t->trace->plane.dist = -plane->dist;
 753                 VectorNegate (plane->normal, t->trace->plane.normal);
 754         }
 755         else
 756         {
 757                 t->trace->plane.dist = plane->dist;
 758                 VectorCopy (plane->normal, t->trace->plane.normal);
 759         }
 760
 761         // calculate the true fraction
 762         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 763         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 764         midf = t1 / (t1 - t2);
 765         t->trace->realfraction = bound(0, midf, 1);
 766
 767         // calculate the return fraction which is nudged off the surface a bit
 768         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 769         t->trace->fraction = bound(0, midf, 1);
 770
 771 #if COLLISIONPARANOID >= 3
 772         Con_Print("D");
 773 #endif
 774         return HULLCHECKSTATE_DONE;
 775 }
 776
 777 //#if COLLISIONPARANOID < 2
 778 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 779 {
 780         while (num >= 0)
 781                 num = t->hull->clipnodes[num].children[(t->hull->planes[t->hull->clipnodes[num].planenum].type < 3 ? t->start[t->hull->planes[t->hull->clipnodes[num].planenum].type] : DotProduct(t->hull->planes[t->hull->clipnodes[num].planenum].normal, t->start)) < t->hull->planes[t->hull->clipnodes[num].planenum].dist];
 782         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 783         t->trace->startsupercontents |= num;
 784         if (num & SUPERCONTENTS_LIQUIDSMASK)
 785                 t->trace->inwater = true;
 786         if (num == 0)
 787                 t->trace->inopen = true;
 788         if (num & t->trace->hitsupercontentsmask)
 789         {
 790                 t->trace->allsolid = t->trace->startsolid = true;
 791                 return HULLCHECKSTATE_SOLID;
 792         }
 793         else
 794         {
 795                 t->trace->allsolid = t->trace->startsolid = false;
 796                 return HULLCHECKSTATE_EMPTY;
 797         }
 798 }
 799 //#endif
 800
 801 static void Mod_Q1BSP_TraceBox(struct model_s *model, int frame, trace_t *trace, const vec3_t start, const vec3_t boxmins, const vec3_t boxmaxs, const vec3_t end, int hitsupercontentsmask)
 802 {
 803         // this function currently only supports same size start and end
 804         double boxsize[3];
 805         RecursiveHullCheckTraceInfo_t rhc;
 806
 807         memset(&rhc, 0, sizeof(rhc));
 808         memset(trace, 0, sizeof(trace_t));
 809         rhc.trace = trace;
 810         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 811         rhc.trace->fraction = 1;
 812         rhc.trace->realfraction = 1;
 813         rhc.trace->allsolid = true;
 814         VectorSubtract(boxmaxs, boxmins, boxsize);
 815         if (boxsize[0] < 3)
 816                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 817         else if (model->brush.ismcbsp)
 818         {
 819                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 820                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 821                 else
 822                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 823         }
 824         else if (model->brush.ishlbsp)
 825         {
 826                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 827                 // minor float precision errors from the box being transformed around
 828                 if (boxsize[0] < 32.1)
 829                 {
 830                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 831                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 832                         else
 833                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 834                 }
 835                 else
 836                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 837         }
 838         else
 839         {
 840                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 841                 // minor float precision errors from the box being transformed around
 842                 if (boxsize[0] < 32.1)
 843                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 844                 else
 845                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 846         }
 847         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 848         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 849         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 850 #if COLLISIONPARANOID >= 2
 851         Con_Printf("t(%f %f %f,%f %f %f,%i %f %f %f)", rhc.start[0], rhc.start[1], rhc.start[2], rhc.end[0], rhc.end[1], rhc.end[2], rhc.hull - model->brushq1.hulls, rhc.hull->clip_mins[0], rhc.hull->clip_mins[1], rhc.hull->clip_mins[2]);
 852         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 853         {
 854
 855                 double test[3];
 856                 trace_t testtrace;
 857                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 858                 memset(&testtrace, 0, sizeof(trace_t));
 859                 rhc.trace = &testtrace;
 860                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 861                 rhc.trace->fraction = 1;
 862                 rhc.trace->realfraction = 1;
 863                 rhc.trace->allsolid = true;
 864                 VectorCopy(test, rhc.start);
 865                 VectorCopy(test, rhc.end);
 866                 VectorClear(rhc.dist);
 867                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 868                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 869                 if (!trace->startsolid && testtrace.startsolid)
 870                         Con_Printf(" - ended in solid!\n");
 871         }
 872         Con_Print("\n");
 873 #else
 874         if (VectorLength2(rhc.dist))
 875                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 876         else
 877                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 878 #endif
 879 }
 880
 881 void Collision_ClipTrace_Box(trace_t *trace, const vec3_t cmins, const vec3_t cmaxs, const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitsupercontentsmask, int boxsupercontents, int boxq3surfaceflags, texture_t *boxtexture)
 882 {
 883 #if 1
 884         colbrushf_t cbox;
 885         colplanef_t cbox_planes[6];
 886         cbox.supercontents = boxsupercontents;
 887         cbox.numplanes = 6;
 888         cbox.numpoints = 0;
 889         cbox.numtriangles = 0;
 890         cbox.planes = cbox_planes;
 891         cbox.points = NULL;
 892         cbox.elements = NULL;
 893         cbox.markframe = 0;
 894         cbox.mins[0] = 0;
 895         cbox.mins[1] = 0;
 896         cbox.mins[2] = 0;
 897         cbox.maxs[0] = 0;
 898         cbox.maxs[1] = 0;
 899         cbox.maxs[2] = 0;
 900         cbox_planes[0].normal[0] =  1;cbox_planes[0].normal[1] =  0;cbox_planes[0].normal[2] =  0;cbox_planes[0].dist = cmaxs[0] - mins[0];
 901         cbox_planes[1].normal[0] = -1;cbox_planes[1].normal[1] =  0;cbox_planes[1].normal[2] =  0;cbox_planes[1].dist = maxs[0] - cmins[0];
 902         cbox_planes[2].normal[0] =  0;cbox_planes[2].normal[1] =  1;cbox_planes[2].normal[2] =  0;cbox_planes[2].dist = cmaxs[1] - mins[1];
 903         cbox_planes[3].normal[0] =  0;cbox_planes[3].normal[1] = -1;cbox_planes[3].normal[2] =  0;cbox_planes[3].dist = maxs[1] - cmins[1];
 904         cbox_planes[4].normal[0] =  0;cbox_planes[4].normal[1] =  0;cbox_planes[4].normal[2] =  1;cbox_planes[4].dist = cmaxs[2] - mins[2];
 905         cbox_planes[5].normal[0] =  0;cbox_planes[5].normal[1] =  0;cbox_planes[5].normal[2] = -1;cbox_planes[5].dist = maxs[2] - cmins[2];
 906         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 907         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 908         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 909         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 910         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 911         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 912         memset(trace, 0, sizeof(trace_t));
 913         trace->hitsupercontentsmask = hitsupercontentsmask;
 914         trace->fraction = 1;
 915         trace->realfraction = 1;
 916         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 917 #else
 918         RecursiveHullCheckTraceInfo_t rhc;
 919         static hull_t box_hull;
 920         static dclipnode_t box_clipnodes[6];
 921         static mplane_t box_planes[6];
 922         // fill in a default trace
 923         memset(&rhc, 0, sizeof(rhc));
 924         memset(trace, 0, sizeof(trace_t));
 925         //To keep everything totally uniform, bounding boxes are turned into small
 926         //BSP trees instead of being compared directly.
 927         // create a temp hull from bounding box sizes
 928         box_planes[0].dist = cmaxs[0] - mins[0];
 929         box_planes[1].dist = cmins[0] - maxs[0];
 930         box_planes[2].dist = cmaxs[1] - mins[1];
 931         box_planes[3].dist = cmins[1] - maxs[1];
 932         box_planes[4].dist = cmaxs[2] - mins[2];
 933         box_planes[5].dist = cmins[2] - maxs[2];
 934 #if COLLISIONPARANOID >= 3
 935         Con_Printf("box_planes %f:%f %f:%f %f:%f\ncbox %f %f %f:%f %f %f\nbox %f %f %f:%f %f %f\n", box_planes[0].dist, box_planes[1].dist, box_planes[2].dist, box_planes[3].dist, box_planes[4].dist, box_planes[5].dist, cmins[0], cmins[1], cmins[2], cmaxs[0], cmaxs[1], cmaxs[2], mins[0], mins[1], mins[2], maxs[0], maxs[1], maxs[2]);
 936 #endif
 937
 938         if (box_hull.clipnodes == NULL)
 939         {
 940                 int i, side;
 941
 942                 //Set up the planes and clipnodes so that the six floats of a bounding box
 943                 //can just be stored out and get a proper hull_t structure.
 944
 945                 box_hull.clipnodes = box_clipnodes;
 946                 box_hull.planes = box_planes;
 947                 box_hull.firstclipnode = 0;
 948                 box_hull.lastclipnode = 5;
 949
 950                 for (i = 0;i < 6;i++)
 951                 {
 952                         box_clipnodes[i].planenum = i;
 953
 954                         side = i&1;
 955
 956                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 957                         if (i != 5)
 958                                 box_clipnodes[i].children[side^1] = i + 1;
 959                         else
 960                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 961
 962                         box_planes[i].type = i>>1;
 963                         box_planes[i].normal[i>>1] = 1;
 964                 }
 965         }
 966
 967         // trace a line through the generated clipping hull
 968         //rhc.boxsupercontents = boxsupercontents;
 969         rhc.hull = &box_hull;
 970         rhc.trace = trace;
 971         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 972         rhc.trace->fraction = 1;
 973         rhc.trace->realfraction = 1;
 974         rhc.trace->allsolid = true;
 975         VectorCopy(start, rhc.start);
 976         VectorCopy(end, rhc.end);
 977         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 978         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 979         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 980         if (rhc.trace->startsupercontents)
 981                 rhc.trace->startsupercontents = boxsupercontents;
 982 #endif
 983 }
 984
 985 static int Mod_Q1BSP_LightPoint_RecursiveBSPNode(model_t *model, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal, const mnode_t *node, float x, float y, float startz, float endz)
 986 {
 987         int side;
 988         float front, back;
 989         float mid, distz = endz - startz;
 990
 991 loc0:
 992         if (!node->plane)
 993                 return false;           // didn't hit anything
 994
 995         switch (node->plane->type)
 996         {
 997         case PLANE_X:
 998                 node = node->children[x < node->plane->dist];
 999                 goto loc0;
1000         case PLANE_Y:
1001                 node = node->children[y < node->plane->dist];
1002                 goto loc0;
1003         case PLANE_Z:
1004                 side = startz < node->plane->dist;
1005                 if ((endz < node->plane->dist) == side)
1006                 {
1007                         node = node->children[side];
1008                         goto loc0;
1009                 }
1010                 // found an intersection
1011                 mid = node->plane->dist;
1012                 break;
1013         default:
1014                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1015                 front += startz * node->plane->normal[2];
1016                 back += endz * node->plane->normal[2];
1017                 side = front < node->plane->dist;
1018                 if ((back < node->plane->dist) == side)
1019                 {
1020                         node = node->children[side];
1021                         goto loc0;
1022                 }
1023                 // found an intersection
1024                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1025                 break;
1026         }
1027
1028         // go down front side
1029         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1030                 return true;    // hit something
1031         else
1032         {
1033                 // check for impact on this node
1034                 if (node->numsurfaces)
1035                 {
1036                         int i, ds, dt;
1037                         msurface_t *surface;
1038
1039                         surface = model->data_surfaces + node->firstsurface;
1040                         for (i = 0;i < node->numsurfaces;i++, surface++)
1041                         {
1042                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1043                                         continue;       // no lightmaps
1044
1045                                 ds = (int) (x * surface->lightmapinfo->texinfo->vecs[0][0] + y * surface->lightmapinfo->texinfo->vecs[0][1] + mid * surface->lightmapinfo->texinfo->vecs[0][2] + surface->lightmapinfo->texinfo->vecs[0][3]) - surface->lightmapinfo->texturemins[0];
1046                                 dt = (int) (x * surface->lightmapinfo->texinfo->vecs[1][0] + y * surface->lightmapinfo->texinfo->vecs[1][1] + mid * surface->lightmapinfo->texinfo->vecs[1][2] + surface->lightmapinfo->texinfo->vecs[1][3]) - surface->lightmapinfo->texturemins[1];
1047
1048                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1049                                 {
1050                                         unsigned char *lightmap;
1051                                         int lmwidth, lmheight, maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
1052                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1053                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1054                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1055                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1056
1057                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1058
1059                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1060                                         {
1061                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1062                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1063                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1064                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1065                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1066                                                 lightmap += size3;
1067                                         }
1068
1069 /*
1070 LordHavoc: here's the readable version of the interpolation
1071 code, not quite as easy for the compiler to optimize...
1072
1073 dsfrac is the X position in the lightmap pixel, * 16
1074 dtfrac is the Y position in the lightmap pixel, * 16
1075 r00 is top left corner, r01 is top right corner
1076 r10 is bottom left corner, r11 is bottom right corner
1077 g and b are the same layout.
1078 r0 and r1 are the top and bottom intermediate results
1079
1080 first we interpolate the top two points, to get the top
1081 edge sample
1082
1083         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1084         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1085         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1086
1087 then we interpolate the bottom two points, to get the
1088 bottom edge sample
1089
1090         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1091         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1092         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1093
1094 then we interpolate the top and bottom samples to get the
1095 middle sample (the one which was requested)
1096
1097         r = (((r1-r0) * dtfrac) >> 4) + r0;
1098         g = (((g1-g0) * dtfrac) >> 4) + g0;
1099         b = (((b1-b0) * dtfrac) >> 4) + b0;
1100 */
1101
1102                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1103                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1104                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1105                                         return true; // success
1106                                 }
1107                         }
1108                 }
1109
1110                 // go down back side
1111                 node = node->children[side ^ 1];
1112                 startz = mid;
1113                 distz = endz - startz;
1114                 goto loc0;
1115         }
1116 }
1117
1118 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1119 {
1120         Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, p[0], p[1], p[2] + 0.125, p[2] - 65536);
1121         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1122         VectorSet(diffusenormal, 0, 0, 1);
1123 }
1124
1125 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1126 {
1127         int c;
1128         unsigned char *outstart = out;
1129         while (out < outend)
1130         {
1131                 if (in == inend)
1132                 {
1133                         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));
1134                         return;
1135                 }
1136                 c = *in++;
1137                 if (c)
1138                         *out++ = c;
1139                 else
1140                 {
1141                         if (in == inend)
1142                         {
1143                                 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));
1144                                 return;
1145                         }
1146                         for (c = *in++;c > 0;c--)
1147                         {
1148                                 if (out == outend)
1149                                 {
1150                                         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));
1151                                         return;
1152                                 }
1153                                 *out++ = 0;
1154                         }
1155                 }
1156         }
1157 }
1158
1159 /*
1160 =============
1161 R_Q1BSP_LoadSplitSky
1162
1163 A sky texture is 256*128, with the right side being a masked overlay
1164 ==============
1165 */
1166 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1167 {
1168         int i, j;
1169         unsigned solidpixels[128*128], alphapixels[128*128];
1170
1171         // if sky isn't the right size, just use it as a solid layer
1172         if (width != 256 || height != 128)
1173         {
1174                 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);
1175                 loadmodel->brush.alphaskytexture = NULL;
1176                 return;
1177         }
1178
1179         if (bytesperpixel == 4)
1180         {
1181                 for (i = 0;i < 128;i++)
1182                 {
1183                         for (j = 0;j < 128;j++)
1184                         {
1185                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1186                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1187                         }
1188                 }
1189         }
1190         else
1191         {
1192                 // make an average value for the back to avoid
1193                 // a fringe on the top level
1194                 int p, r, g, b;
1195                 union
1196                 {
1197                         unsigned int i;
1198                         unsigned char b[4];
1199                 }
1200                 rgba;
1201                 r = g = b = 0;
1202                 for (i = 0;i < 128;i++)
1203                 {
1204                         for (j = 0;j < 128;j++)
1205                         {
1206                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1207                                 r += rgba.b[0];
1208                                 g += rgba.b[1];
1209                                 b += rgba.b[2];
1210                         }
1211                 }
1212                 rgba.b[0] = r/(128*128);
1213                 rgba.b[1] = g/(128*128);
1214                 rgba.b[2] = b/(128*128);
1215                 rgba.b[3] = 0;
1216                 for (i = 0;i < 128;i++)
1217                 {
1218                         for (j = 0;j < 128;j++)
1219                         {
1220                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1221                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1222                         }
1223                 }
1224         }
1225
1226         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1227         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1228 }
1229
1230 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1231 {
1232         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1233         miptex_t *dmiptex;
1234         texture_t *tx, *tx2, *anims[10], *altanims[10];
1235         dmiptexlump_t *m;
1236         unsigned char *data, *mtdata;
1237         const char *s;
1238         char mapname[MAX_QPATH], name[MAX_QPATH];
1239
1240         loadmodel->data_textures = NULL;
1241
1242         // add two slots for notexture walls and notexture liquids
1243         if (l->filelen)
1244         {
1245                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1246                 m->nummiptex = LittleLong (m->nummiptex);
1247                 loadmodel->num_textures = m->nummiptex + 2;
1248         }
1249         else
1250         {
1251                 m = NULL;
1252                 loadmodel->num_textures = 2;
1253         }
1254
1255         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1256
1257         // fill out all slots with notexture
1258         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1259         {
1260                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1261                 tx->width = 16;
1262                 tx->height = 16;
1263                 tx->numskinframes = 1;
1264                 tx->skinframerate = 1;
1265                 tx->currentskinframe = tx->skinframes;
1266                 tx->skinframes[0].base = r_texture_notexture;
1267                 tx->basematerialflags = 0;
1268                 if (i == loadmodel->num_textures - 1)
1269                 {
1270                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1271                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1272                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1273                 }
1274                 else
1275                 {
1276                         tx->basematerialflags |= MATERIALFLAG_WALL;
1277                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1278                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1279                 }
1280                 tx->currentframe = tx;
1281         }
1282
1283         if (!m)
1284                 return;
1285
1286         s = loadmodel->name;
1287         if (!strncasecmp(s, "maps/", 5))
1288                 s += 5;
1289         FS_StripExtension(s, mapname, sizeof(mapname));
1290
1291         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1292         dofs = m->dataofs;
1293         // LordHavoc: mostly rewritten map texture loader
1294         for (i = 0;i < m->nummiptex;i++)
1295         {
1296                 dofs[i] = LittleLong(dofs[i]);
1297                 if (dofs[i] == -1 || r_nosurftextures.integer)
1298                         continue;
1299                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1300
1301                 // make sure name is no more than 15 characters
1302                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1303                         name[j] = dmiptex->name[j];
1304                 name[j] = 0;
1305
1306                 mtwidth = LittleLong(dmiptex->width);
1307                 mtheight = LittleLong(dmiptex->height);
1308                 mtdata = NULL;
1309                 j = LittleLong(dmiptex->offsets[0]);
1310                 if (j)
1311                 {
1312                         // texture included
1313                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1314                         {
1315                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1316                                 continue;
1317                         }
1318                         mtdata = (unsigned char *)dmiptex + j;
1319                 }
1320
1321                 if ((mtwidth & 15) || (mtheight & 15))
1322                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1323
1324                 // LordHavoc: force all names to lowercase
1325                 for (j = 0;name[j];j++)
1326                         if (name[j] >= 'A' && name[j] <= 'Z')
1327                                 name[j] += 'a' - 'A';
1328
1329                 tx = loadmodel->data_textures + i;
1330                 strlcpy(tx->name, name, sizeof(tx->name));
1331                 tx->width = mtwidth;
1332                 tx->height = mtheight;
1333
1334                 if (!tx->name[0])
1335                 {
1336                         sprintf(tx->name, "unnamed%i", i);
1337                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1338                 }
1339
1340                 if (cls.state != ca_dedicated)
1341                 {
1342                         // LordHavoc: HL sky textures are entirely different than quake
1343                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1344                         {
1345                                 if (loadmodel->isworldmodel)
1346                                 {
1347                                         data = loadimagepixels(tx->name, false, 0, 0);
1348                                         if (data)
1349                                         {
1350                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1351                                                 Mem_Free(data);
1352                                         }
1353                                         else if (mtdata != NULL)
1354                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1355                                 }
1356                         }
1357                         else
1358                         {
1359                                 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)
1360                                  && !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))
1361                                 {
1362                                         // did not find external texture, load it from the bsp or wad3
1363                                         if (loadmodel->brush.ishlbsp)
1364                                         {
1365                                                 // internal texture overrides wad
1366                                                 unsigned char *pixels, *freepixels;
1367                                                 pixels = freepixels = NULL;
1368                                                 if (mtdata)
1369                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1370                                                 if (pixels == NULL)
1371                                                         pixels = freepixels = W_GetTexture(tx->name);
1372                                                 if (pixels != NULL)
1373                                                 {
1374                                                         tx->width = image_width;
1375                                                         tx->height = image_height;
1376                                                         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);
1377                                                 }
1378                                                 if (freepixels)
1379                                                         Mem_Free(freepixels);
1380                                         }
1381                                         else if (mtdata) // texture included
1382                                                 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);
1383                                 }
1384                         }
1385                         if (tx->skinframes[0].base == NULL)
1386                         {
1387                                 // no texture found
1388                                 tx->width = 16;
1389                                 tx->height = 16;
1390                                 tx->skinframes[0].base = r_texture_notexture;
1391                         }
1392                 }
1393
1394                 tx->basematerialflags = 0;
1395                 if (tx->name[0] == '*')
1396                 {
1397                         // LordHavoc: some turbulent textures should not be affected by wateralpha
1398                         if (strncmp(tx->name,"*lava",5)
1399                          && strncmp(tx->name,"*teleport",9)
1400                          && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1401                                 tx->basematerialflags |= MATERIALFLAG_WATERALPHA;
1402                         if (!strncmp(tx->name, "*lava", 5))
1403                         {
1404                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1405                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1406                         }
1407                         else if (!strncmp(tx->name, "*slime", 6))
1408                         {
1409                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1410                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1411                         }
1412                         else
1413                         {
1414                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1415                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1416                         }
1417                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES;
1418                 }
1419                 else if (tx->name[0] == 's' && tx->name[1] == 'k' && tx->name[2] == 'y')
1420                 {
1421                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1422                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1423                         tx->basematerialflags |= MATERIALFLAG_SKY;
1424                 }
1425                 else
1426                 {
1427                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1428                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1429                         tx->basematerialflags |= MATERIALFLAG_WALL;
1430                 }
1431                 if (tx->skinframes[0].fog)
1432                         tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
1433
1434                 // start out with no animation
1435                 tx->currentframe = tx;
1436         }
1437
1438         // sequence the animations
1439         for (i = 0;i < m->nummiptex;i++)
1440         {
1441                 tx = loadmodel->data_textures + i;
1442                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1443                         continue;
1444                 if (tx->anim_total[0] || tx->anim_total[1])
1445                         continue;       // already sequenced
1446
1447                 // find the number of frames in the animation
1448                 memset(anims, 0, sizeof(anims));
1449                 memset(altanims, 0, sizeof(altanims));
1450
1451                 for (j = i;j < m->nummiptex;j++)
1452                 {
1453                         tx2 = loadmodel->data_textures + j;
1454                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1455                                 continue;
1456
1457                         num = tx2->name[1];
1458                         if (num >= '0' && num <= '9')
1459                                 anims[num - '0'] = tx2;
1460                         else if (num >= 'a' && num <= 'j')
1461                                 altanims[num - 'a'] = tx2;
1462                         else
1463                                 Con_Printf("Bad animating texture %s\n", tx->name);
1464                 }
1465
1466                 max = altmax = 0;
1467                 for (j = 0;j < 10;j++)
1468                 {
1469                         if (anims[j])
1470                                 max = j + 1;
1471                         if (altanims[j])
1472                                 altmax = j + 1;
1473                 }
1474                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1475
1476                 incomplete = false;
1477                 for (j = 0;j < max;j++)
1478                 {
1479                         if (!anims[j])
1480                         {
1481                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1482                                 incomplete = true;
1483                         }
1484                 }
1485                 for (j = 0;j < altmax;j++)
1486                 {
1487                         if (!altanims[j])
1488                         {
1489                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1490                                 incomplete = true;
1491                         }
1492                 }
1493                 if (incomplete)
1494                         continue;
1495
1496                 if (altmax < 1)
1497                 {
1498                         // if there is no alternate animation, duplicate the primary
1499                         // animation into the alternate
1500                         altmax = max;
1501                         for (k = 0;k < 10;k++)
1502                                 altanims[k] = anims[k];
1503                 }
1504
1505                 // link together the primary animation
1506                 for (j = 0;j < max;j++)
1507                 {
1508                         tx2 = anims[j];
1509                         tx2->animated = true;
1510                         tx2->anim_total[0] = max;
1511                         tx2->anim_total[1] = altmax;
1512                         for (k = 0;k < 10;k++)
1513                         {
1514                                 tx2->anim_frames[0][k] = anims[k];
1515                                 tx2->anim_frames[1][k] = altanims[k];
1516                         }
1517                 }
1518
1519                 // if there really is an alternate anim...
1520                 if (anims[0] != altanims[0])
1521                 {
1522                         // link together the alternate animation
1523                         for (j = 0;j < altmax;j++)
1524                         {
1525                                 tx2 = altanims[j];
1526                                 tx2->animated = true;
1527                                 // the primary/alternate are reversed here
1528                                 tx2->anim_total[0] = altmax;
1529                                 tx2->anim_total[1] = max;
1530                                 for (k = 0;k < 10;k++)
1531                                 {
1532                                         tx2->anim_frames[0][k] = altanims[k];
1533                                         tx2->anim_frames[1][k] = anims[k];
1534                                 }
1535                         }
1536                 }
1537         }
1538 }
1539
1540 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1541 {
1542         int i;
1543         unsigned char *in, *out, *data, d;
1544         char litfilename[MAX_QPATH];
1545         char dlitfilename[MAX_QPATH];
1546         fs_offset_t filesize;
1547         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1548         {
1549                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1550                 for (i=0; i<l->filelen; i++)
1551                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1552         }
1553         else if (loadmodel->brush.ismcbsp)
1554         {
1555                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1556                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1557         }
1558         else // LordHavoc: bsp version 29 (normal white lighting)
1559         {
1560                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1561                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1562                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1563                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1564                 strlcat (litfilename, ".lit", sizeof (litfilename));
1565                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1566                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1567                 if (data)
1568                 {
1569                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1570                         {
1571                                 i = LittleLong(((int *)data)[1]);
1572                                 if (i == 1)
1573                                 {
1574                                         Con_DPrintf("loaded %s\n", litfilename);
1575                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1576                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1577                                         Mem_Free(data);
1578                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1579                                         if (data)
1580                                         {
1581                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1582                                                 {
1583                                                         i = LittleLong(((int *)data)[1]);
1584                                                         if (i == 1)
1585                                                         {
1586                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1587                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1588                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1589                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1590                                                                 loadmodel->brushq3.deluxemapping = true;
1591                                                         }
1592                                                 }
1593                                                 Mem_Free(data);
1594                                                 data = NULL;
1595                                         }
1596                                         return;
1597                                 }
1598                                 else
1599                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1600                         }
1601                         else if (filesize == 8)
1602                                 Con_Print("Empty .lit file, ignoring\n");
1603                         else
1604                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1605                         if (data)
1606                         {
1607                                 Mem_Free(data);
1608                                 data = NULL;
1609                         }
1610                 }
1611                 // LordHavoc: oh well, expand the white lighting data
1612                 if (!l->filelen)
1613                         return;
1614                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1615                 in = mod_base + l->fileofs;
1616                 out = loadmodel->brushq1.lightdata;
1617                 for (i = 0;i < l->filelen;i++)
1618                 {
1619                         d = *in++;
1620                         *out++ = d;
1621                         *out++ = d;
1622                         *out++ = d;
1623                 }
1624         }
1625 }
1626
1627 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1628 {
1629         loadmodel->brushq1.num_compressedpvs = 0;
1630         loadmodel->brushq1.data_compressedpvs = NULL;
1631         if (!l->filelen)
1632                 return;
1633         loadmodel->brushq1.num_compressedpvs = l->filelen;
1634         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1635         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1636 }
1637
1638 // used only for HalfLife maps
1639 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1640 {
1641         char key[128], value[4096];
1642         char wadname[128];
1643         int i, j, k;
1644         if (!data)
1645                 return;
1646         if (!COM_ParseTokenConsole(&data))
1647                 return; // error
1648         if (com_token[0] != '{')
1649                 return; // error
1650         while (1)
1651         {
1652                 if (!COM_ParseTokenConsole(&data))
1653                         return; // error
1654                 if (com_token[0] == '}')
1655                         break; // end of worldspawn
1656                 if (com_token[0] == '_')
1657                         strlcpy(key, com_token + 1, sizeof(key));
1658                 else
1659                         strlcpy(key, com_token, sizeof(key));
1660                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1661                         key[strlen(key)-1] = 0;
1662                 if (!COM_ParseTokenConsole(&data))
1663                         return; // error
1664                 dpsnprintf(value, sizeof(value), "%s", com_token);
1665                 if (!strcmp("wad", key)) // for HalfLife maps
1666                 {
1667                         if (loadmodel->brush.ishlbsp)
1668                         {
1669                                 j = 0;
1670                                 for (i = 0;i < (int)sizeof(value);i++)
1671                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1672                                                 break;
1673                                 if (value[i])
1674                                 {
1675                                         for (;i < (int)sizeof(value);i++)
1676                                         {
1677                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1678                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1679                                                         j = i+1;
1680                                                 else if (value[i] == ';' || value[i] == 0)
1681                                                 {
1682                                                         k = value[i];
1683                                                         value[i] = 0;
1684                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1685                                                         strlcat(wadname, &value[j], sizeof(wadname));
1686                                                         W_LoadTextureWadFile(wadname, false);
1687                                                         j = i+1;
1688                                                         if (!k)
1689                                                                 break;
1690                                                 }
1691                                         }
1692                                 }
1693                         }
1694                 }
1695         }
1696 }
1697
1698 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1699 {
1700         loadmodel->brush.entities = NULL;
1701         if (!l->filelen)
1702                 return;
1703         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1704         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1705         if (loadmodel->brush.ishlbsp)
1706                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1707 }
1708
1709
1710 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1711 {
1712         dvertex_t       *in;
1713         mvertex_t       *out;
1714         int                     i, count;
1715
1716         in = (dvertex_t *)(mod_base + l->fileofs);
1717         if (l->filelen % sizeof(*in))
1718                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1719         count = l->filelen / sizeof(*in);
1720         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1721
1722         loadmodel->brushq1.vertexes = out;
1723         loadmodel->brushq1.numvertexes = count;
1724
1725         for ( i=0 ; i<count ; i++, in++, out++)
1726         {
1727                 out->position[0] = LittleFloat(in->point[0]);
1728                 out->position[1] = LittleFloat(in->point[1]);
1729                 out->position[2] = LittleFloat(in->point[2]);
1730         }
1731 }
1732
1733 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1734 // can be used for this
1735 // REMOVEME
1736 int SB_ReadInt (unsigned char **buffer)
1737 {
1738         int     i;
1739         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1740         (*buffer) += 4;
1741         return i;
1742 }
1743
1744 // REMOVEME
1745 float SB_ReadFloat (unsigned char **buffer)
1746 {
1747         union
1748         {
1749                 int             i;
1750                 float   f;
1751         } u;
1752
1753         u.i = SB_ReadInt (buffer);
1754         return u.f;
1755 }
1756
1757 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1758 {
1759         unsigned char           *index;
1760         dmodel_t        *out;
1761         int                     i, j, count;
1762
1763         index = (unsigned char *)(mod_base + l->fileofs);
1764         if (l->filelen % (48+4*hullinfo->filehulls))
1765                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1766
1767         count = l->filelen / (48+4*hullinfo->filehulls);
1768         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1769
1770         loadmodel->brushq1.submodels = out;
1771         loadmodel->brush.numsubmodels = count;
1772
1773         for (i = 0; i < count; i++, out++)
1774         {
1775         // spread out the mins / maxs by a pixel
1776                 out->mins[0] = SB_ReadFloat (&index) - 1;
1777                 out->mins[1] = SB_ReadFloat (&index) - 1;
1778                 out->mins[2] = SB_ReadFloat (&index) - 1;
1779                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1780                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1781                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1782                 out->origin[0] = SB_ReadFloat (&index);
1783                 out->origin[1] = SB_ReadFloat (&index);
1784                 out->origin[2] = SB_ReadFloat (&index);
1785                 for (j = 0; j < hullinfo->filehulls; j++)
1786                         out->headnode[j] = SB_ReadInt (&index);
1787                 out->visleafs = SB_ReadInt (&index);
1788                 out->firstface = SB_ReadInt (&index);
1789                 out->numfaces = SB_ReadInt (&index);
1790         }
1791 }
1792
1793 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1794 {
1795         dedge_t *in;
1796         medge_t *out;
1797         int     i, count;
1798
1799         in = (dedge_t *)(mod_base + l->fileofs);
1800         if (l->filelen % sizeof(*in))
1801                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1802         count = l->filelen / sizeof(*in);
1803         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1804
1805         loadmodel->brushq1.edges = out;
1806         loadmodel->brushq1.numedges = count;
1807
1808         for ( i=0 ; i<count ; i++, in++, out++)
1809         {
1810                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1811                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1812                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1813                 {
1814                         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);
1815                         out->v[0] = 0;
1816                         out->v[1] = 0;
1817                 }
1818         }
1819 }
1820
1821 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1822 {
1823         texinfo_t *in;
1824         mtexinfo_t *out;
1825         int i, j, k, count, miptex;
1826
1827         in = (texinfo_t *)(mod_base + l->fileofs);
1828         if (l->filelen % sizeof(*in))
1829                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1830         count = l->filelen / sizeof(*in);
1831         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1832
1833         loadmodel->brushq1.texinfo = out;
1834         loadmodel->brushq1.numtexinfo = count;
1835
1836         for (i = 0;i < count;i++, in++, out++)
1837         {
1838                 for (k = 0;k < 2;k++)
1839                         for (j = 0;j < 4;j++)
1840                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1841
1842                 miptex = LittleLong(in->miptex);
1843                 out->flags = LittleLong(in->flags);
1844
1845                 out->texture = NULL;
1846                 if (loadmodel->data_textures)
1847                 {
1848                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1849                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1850                         else
1851                                 out->texture = loadmodel->data_textures + miptex;
1852                 }
1853                 if (out->flags & TEX_SPECIAL)
1854                 {
1855                         // if texture chosen is NULL or the shader needs a lightmap,
1856                         // force to notexture water shader
1857                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1858                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1859                 }
1860                 else
1861                 {
1862                         // if texture chosen is NULL, force to notexture
1863                         if (out->texture == NULL)
1864                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1865                 }
1866         }
1867 }
1868
1869 #if 0
1870 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1871 {
1872         int             i, j;
1873         float   *v;
1874
1875         mins[0] = mins[1] = mins[2] = 9999;
1876         maxs[0] = maxs[1] = maxs[2] = -9999;
1877         v = verts;
1878         for (i = 0;i < numverts;i++)
1879         {
1880                 for (j = 0;j < 3;j++, v++)
1881                 {
1882                         if (*v < mins[j])
1883                                 mins[j] = *v;
1884                         if (*v > maxs[j])
1885                                 maxs[j] = *v;
1886                 }
1887         }
1888 }
1889
1890 #define MAX_SUBDIVPOLYTRIANGLES 4096
1891 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1892
1893 static int subdivpolyverts, subdivpolytriangles;
1894 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
1895 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
1896
1897 static int subdivpolylookupvert(vec3_t v)
1898 {
1899         int i;
1900         for (i = 0;i < subdivpolyverts;i++)
1901                 if (subdivpolyvert[i][0] == v[0]
1902                  && subdivpolyvert[i][1] == v[1]
1903                  && subdivpolyvert[i][2] == v[2])
1904                         return i;
1905         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
1906                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
1907         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
1908         return subdivpolyverts++;
1909 }
1910
1911 static void SubdividePolygon(int numverts, float *verts)
1912 {
1913         int             i, i1, i2, i3, f, b, c, p;
1914         vec3_t  mins, maxs, front[256], back[256];
1915         float   m, *pv, *cv, dist[256], frac;
1916
1917         if (numverts > 250)
1918                 Host_Error("SubdividePolygon: ran out of verts in buffer");
1919
1920         BoundPoly(numverts, verts, mins, maxs);
1921
1922         for (i = 0;i < 3;i++)
1923         {
1924                 m = (mins[i] + maxs[i]) * 0.5;
1925                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
1926                 if (maxs[i] - m < 8)
1927                         continue;
1928                 if (m - mins[i] < 8)
1929                         continue;
1930
1931                 // cut it
1932                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
1933                         dist[c] = cv[i] - m;
1934
1935                 f = b = 0;
1936                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
1937                 {
1938                         if (dist[p] >= 0)
1939                         {
1940                                 VectorCopy(pv, front[f]);
1941                                 f++;
1942                         }
1943                         if (dist[p] <= 0)
1944                         {
1945                                 VectorCopy(pv, back[b]);
1946                                 b++;
1947                         }
1948                         if (dist[p] == 0 || dist[c] == 0)
1949                                 continue;
1950                         if ((dist[p] > 0) != (dist[c] > 0) )
1951                         {
1952                                 // clip point
1953                                 frac = dist[p] / (dist[p] - dist[c]);
1954                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
1955                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
1956                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
1957                                 f++;
1958                                 b++;
1959                         }
1960                 }
1961
1962                 SubdividePolygon(f, front[0]);
1963                 SubdividePolygon(b, back[0]);
1964                 return;
1965         }
1966
1967         i1 = subdivpolylookupvert(verts);
1968         i2 = subdivpolylookupvert(verts + 3);
1969         for (i = 2;i < numverts;i++)
1970         {
1971                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
1972                 {
1973                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
1974                         return;
1975                 }
1976
1977                 i3 = subdivpolylookupvert(verts + i * 3);
1978                 subdivpolyindex[subdivpolytriangles][0] = i1;
1979                 subdivpolyindex[subdivpolytriangles][1] = i2;
1980                 subdivpolyindex[subdivpolytriangles][2] = i3;
1981                 i2 = i3;
1982                 subdivpolytriangles++;
1983         }
1984 }
1985
1986 //Breaks a polygon up along axial 64 unit
1987 //boundaries so that turbulent and sky warps
1988 //can be done reasonably.
1989 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
1990 {
1991         int i, j;
1992         surfvertex_t *v;
1993         surfmesh_t *mesh;
1994
1995         subdivpolytriangles = 0;
1996         subdivpolyverts = 0;
1997         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
1998         if (subdivpolytriangles < 1)
1999                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2000
2001         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2002         mesh->num_vertices = subdivpolyverts;
2003         mesh->num_triangles = subdivpolytriangles;
2004         mesh->vertex = (surfvertex_t *)(mesh + 1);
2005         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2006         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2007
2008         for (i = 0;i < mesh->num_triangles;i++)
2009                 for (j = 0;j < 3;j++)
2010                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2011
2012         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2013         {
2014                 VectorCopy(subdivpolyvert[i], v->v);
2015                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2016                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2017         }
2018 }
2019 #endif
2020
2021 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2022 {
2023         int y, x2, y2;
2024         int bestx = totalwidth, besty = 0;
2025         // find the left-most space we can find
2026         for (y = 0;y <= totalheight - blockheight;y++)
2027         {
2028                 x2 = 0;
2029                 for (y2 = 0;y2 < blockheight;y2++)
2030                         x2 = max(x2, lineused[y+y2]);
2031                 if (bestx > x2)
2032                 {
2033                         bestx = x2;
2034                         besty = y;
2035                 }
2036         }
2037         // if the best was not good enough, return failure
2038         if (bestx > totalwidth - blockwidth)
2039                 return false;
2040         // we found a good spot
2041         if (outx)
2042                 *outx = bestx;
2043         if (outy)
2044                 *outy = besty;
2045         // now mark the space used
2046         for (y2 = 0;y2 < blockheight;y2++)
2047                 lineused[besty+y2] = bestx + blockwidth;
2048         // return success
2049         return true;
2050 }
2051
2052 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2053 {
2054         dface_t *in;
2055         msurface_t *surface;
2056         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2057         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2058 #define LIGHTMAPSIZE 256
2059         rtexture_t *lightmaptexture, *deluxemaptexture;
2060         int lightmap_lineused[LIGHTMAPSIZE];
2061
2062         in = (dface_t *)(mod_base + l->fileofs);
2063         if (l->filelen % sizeof(*in))
2064                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2065         count = l->filelen / sizeof(*in);
2066         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2067         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2068
2069         loadmodel->num_surfaces = count;
2070
2071         totalverts = 0;
2072         totaltris = 0;
2073         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2074         {
2075                 numedges = LittleShort(in->numedges);
2076                 totalverts += numedges;
2077                 totaltris += numedges - 2;
2078         }
2079
2080         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2081
2082         lightmaptexture = NULL;
2083         deluxemaptexture = r_texture_blanknormalmap;
2084         lightmapnumber = 1;
2085         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2086
2087         totalverts = 0;
2088         totaltris = 0;
2089         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2090         {
2091                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2092
2093                 // FIXME: validate edges, texinfo, etc?
2094                 firstedge = LittleLong(in->firstedge);
2095                 numedges = LittleShort(in->numedges);
2096                 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)
2097                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2098                 i = LittleShort(in->texinfo);
2099                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2100                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2101                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2102                 surface->texture = surface->lightmapinfo->texinfo->texture;
2103
2104                 planenum = LittleShort(in->planenum);
2105                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2106                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2107
2108                 //surface->flags = surface->texture->flags;
2109                 //if (LittleShort(in->side))
2110                 //      surface->flags |= SURF_PLANEBACK;
2111                 //surface->plane = loadmodel->brush.data_planes + planenum;
2112
2113                 surface->num_firstvertex = totalverts;
2114                 surface->num_vertices = numedges;
2115                 surface->num_firsttriangle = totaltris;
2116                 surface->num_triangles = numedges - 2;
2117                 totalverts += numedges;
2118                 totaltris += numedges - 2;
2119
2120                 // convert edges back to a normal polygon
2121                 for (i = 0;i < surface->num_vertices;i++)
2122                 {
2123                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2124                         float s, t;
2125                         if (lindex > 0)
2126                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2127                         else
2128                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2129                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2130                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2131                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2132                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2133                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2134                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2135                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2136                 }
2137
2138                 for (i = 0;i < surface->num_triangles;i++)
2139                 {
2140                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2141                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2142                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2143                 }
2144
2145                 // compile additional data about the surface geometry
2146                 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);
2147                 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);
2148                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2149
2150                 // generate surface extents information
2151                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2152                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2153                 for (i = 1;i < surface->num_vertices;i++)
2154                 {
2155                         for (j = 0;j < 2;j++)
2156                         {
2157                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2158                                 texmins[j] = min(texmins[j], val);
2159                                 texmaxs[j] = max(texmaxs[j], val);
2160                         }
2161                 }
2162                 for (i = 0;i < 2;i++)
2163                 {
2164                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2165                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2166                 }
2167
2168                 smax = surface->lightmapinfo->extents[0] >> 4;
2169                 tmax = surface->lightmapinfo->extents[1] >> 4;
2170                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2171                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2172
2173                 // lighting info
2174                 for (i = 0;i < MAXLIGHTMAPS;i++)
2175                         surface->lightmapinfo->styles[i] = in->styles[i];
2176                 surface->lightmaptexture = NULL;
2177                 surface->deluxemaptexture = r_texture_blanknormalmap;
2178                 i = LittleLong(in->lightofs);
2179                 if (i == -1)
2180                 {
2181                         surface->lightmapinfo->samples = NULL;
2182                         // give non-lightmapped water a 1x white lightmap
2183                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2184                         {
2185                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2186                                 surface->lightmapinfo->styles[0] = 0;
2187                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2188                         }
2189                 }
2190                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2191                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2192                 else // LordHavoc: white lighting (bsp version 29)
2193                 {
2194                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2195                         if (loadmodel->brushq1.nmaplightdata)
2196                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2197                 }
2198
2199                 // check if we should apply a lightmap to this
2200                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2201                 {
2202                         int i, iu, iv, lightmapx, lightmapy;
2203                         float u, v, ubase, vbase, uscale, vscale;
2204
2205                         if (ssize > 256 || tsize > 256)
2206                                 Host_Error("Bad surface extents");
2207                         // force lightmap upload on first time seeing the surface
2208                         surface->cached_dlight = true;
2209                         // stainmap for permanent marks on walls
2210                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2211                         // clear to white
2212                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2213
2214                         // find a place for this lightmap
2215                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2216                         {
2217                                 // could not find room, make a new lightmap
2218                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2219                                 if (loadmodel->brushq1.nmaplightdata)
2220                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2221                                 lightmapnumber++;
2222                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2223                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2224                         }
2225
2226                         surface->lightmaptexture = lightmaptexture;
2227                         surface->deluxemaptexture = deluxemaptexture;
2228                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2229                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2230
2231                         ubase = lightmapx * lightmaptexcoordscale;
2232                         vbase = lightmapy * lightmaptexcoordscale;
2233                         uscale = lightmaptexcoordscale;
2234                         vscale = lightmaptexcoordscale;
2235
2236                         for (i = 0;i < surface->num_vertices;i++)
2237                         {
2238                                 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);
2239                                 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);
2240                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2241                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2242                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2243                                 iu = (int) u;
2244                                 iv = (int) v;
2245                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2246                         }
2247                 }
2248         }
2249 }
2250
2251 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2252 {
2253         //if (node->parent)
2254         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2255         node->parent = parent;
2256         if (node->plane)
2257         {
2258                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2259                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2260         }
2261 }
2262
2263 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2264 {
2265         int                     i, j, count, p;
2266         dnode_t         *in;
2267         mnode_t         *out;
2268
2269         in = (dnode_t *)(mod_base + l->fileofs);
2270         if (l->filelen % sizeof(*in))
2271                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2272         count = l->filelen / sizeof(*in);
2273         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2274
2275         loadmodel->brush.data_nodes = out;
2276         loadmodel->brush.num_nodes = count;
2277
2278         for ( i=0 ; i<count ; i++, in++, out++)
2279         {
2280                 for (j=0 ; j<3 ; j++)
2281                 {
2282                         out->mins[j] = LittleShort(in->mins[j]);
2283                         out->maxs[j] = LittleShort(in->maxs[j]);
2284                 }
2285
2286                 p = LittleLong(in->planenum);
2287                 out->plane = loadmodel->brush.data_planes + p;
2288
2289                 out->firstsurface = LittleShort(in->firstface);
2290                 out->numsurfaces = LittleShort(in->numfaces);
2291
2292                 for (j=0 ; j<2 ; j++)
2293                 {
2294                         p = LittleShort(in->children[j]);
2295                         if (p >= 0)
2296                                 out->children[j] = loadmodel->brush.data_nodes + p;
2297                         else
2298                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2299                 }
2300         }
2301
2302         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2303 }
2304
2305 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2306 {
2307         dleaf_t *in;
2308         mleaf_t *out;
2309         int i, j, count, p;
2310
2311         in = (dleaf_t *)(mod_base + l->fileofs);
2312         if (l->filelen % sizeof(*in))
2313                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2314         count = l->filelen / sizeof(*in);
2315         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2316
2317         loadmodel->brush.data_leafs = out;
2318         loadmodel->brush.num_leafs = count;
2319         // get visleafs from the submodel data
2320         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2321         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2322         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2323         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2324
2325         for ( i=0 ; i<count ; i++, in++, out++)
2326         {
2327                 for (j=0 ; j<3 ; j++)
2328                 {
2329                         out->mins[j] = LittleShort(in->mins[j]);
2330                         out->maxs[j] = LittleShort(in->maxs[j]);
2331                 }
2332
2333                 // FIXME: this function could really benefit from some error checking
2334
2335                 out->contents = LittleLong(in->contents);
2336
2337                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2338                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2339                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2340                 {
2341                         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);
2342                         out->firstleafsurface = NULL;
2343                         out->numleafsurfaces = 0;
2344                 }
2345
2346                 out->clusterindex = i - 1;
2347                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2348                         out->clusterindex = -1;
2349
2350                 p = LittleLong(in->visofs);
2351                 // ignore visofs errors on leaf 0 (solid)
2352                 if (p >= 0 && out->clusterindex >= 0)
2353                 {
2354                         if (p >= loadmodel->brushq1.num_compressedpvs)
2355                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2356                         else
2357                                 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);
2358                 }
2359
2360                 for (j = 0;j < 4;j++)
2361                         out->ambient_sound_level[j] = in->ambient_level[j];
2362
2363                 // FIXME: Insert caustics here
2364         }
2365 }
2366
2367 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2368 {
2369         dclipnode_t *in, *out;
2370         int                     i, count;
2371         hull_t          *hull;
2372
2373         in = (dclipnode_t *)(mod_base + l->fileofs);
2374         if (l->filelen % sizeof(*in))
2375                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2376         count = l->filelen / sizeof(*in);
2377         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2378
2379         loadmodel->brushq1.clipnodes = out;
2380         loadmodel->brushq1.numclipnodes = count;
2381
2382         for (i = 1; i < hullinfo->numhulls; i++)
2383         {
2384                 hull = &loadmodel->brushq1.hulls[i];
2385                 hull->clipnodes = out;
2386                 hull->firstclipnode = 0;
2387                 hull->lastclipnode = count-1;
2388                 hull->planes = loadmodel->brush.data_planes;
2389                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2390                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2391                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2392                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2393                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2394                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2395                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2396         }
2397
2398         for (i=0 ; i<count ; i++, out++, in++)
2399         {
2400                 out->planenum = LittleLong(in->planenum);
2401                 out->children[0] = LittleShort(in->children[0]);
2402                 out->children[1] = LittleShort(in->children[1]);
2403                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2404                         Host_Error("Corrupt clipping hull(out of range planenum)");
2405                 if (out->children[0] >= count || out->children[1] >= count)
2406                         Host_Error("Corrupt clipping hull(out of range child)");
2407         }
2408 }
2409
2410 //Duplicate the drawing hull structure as a clipping hull
2411 static void Mod_Q1BSP_MakeHull0(void)
2412 {
2413         mnode_t         *in;
2414         dclipnode_t *out;
2415         int                     i;
2416         hull_t          *hull;
2417
2418         hull = &loadmodel->brushq1.hulls[0];
2419
2420         in = loadmodel->brush.data_nodes;
2421         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2422
2423         hull->clipnodes = out;
2424         hull->firstclipnode = 0;
2425         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2426         hull->planes = loadmodel->brush.data_planes;
2427
2428         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2429         {
2430                 out->planenum = in->plane - loadmodel->brush.data_planes;
2431                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2432                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2433         }
2434 }
2435
2436 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2437 {
2438         int i, j;
2439         short *in;
2440
2441         in = (short *)(mod_base + l->fileofs);
2442         if (l->filelen % sizeof(*in))
2443                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2444         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2445         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2446
2447         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2448         {
2449                 j = (unsigned) LittleShort(in[i]);
2450                 if (j >= loadmodel->num_surfaces)
2451                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2452                 loadmodel->brush.data_leafsurfaces[i] = j;
2453         }
2454 }
2455
2456 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2457 {
2458         int             i;
2459         int             *in;
2460
2461         in = (int *)(mod_base + l->fileofs);
2462         if (l->filelen % sizeof(*in))
2463                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2464         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2465         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2466
2467         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2468                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2469 }
2470
2471
2472 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2473 {
2474         int                     i;
2475         mplane_t        *out;
2476         dplane_t        *in;
2477
2478         in = (dplane_t *)(mod_base + l->fileofs);
2479         if (l->filelen % sizeof(*in))
2480                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2481
2482         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2483         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2484
2485         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2486         {
2487                 out->normal[0] = LittleFloat(in->normal[0]);
2488                 out->normal[1] = LittleFloat(in->normal[1]);
2489                 out->normal[2] = LittleFloat(in->normal[2]);
2490                 out->dist = LittleFloat(in->dist);
2491
2492                 PlaneClassify(out);
2493         }
2494 }
2495
2496 static void Mod_Q1BSP_LoadMapBrushes(void)
2497 {
2498 #if 0
2499 // unfinished
2500         int submodel, numbrushes;
2501         qboolean firstbrush;
2502         char *text, *maptext;
2503         char mapfilename[MAX_QPATH];
2504         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2505         strlcat (mapfilename, ".map", sizeof (mapfilename));
2506         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2507         if (!maptext)
2508                 return;
2509         text = maptext;
2510         if (!COM_ParseTokenConsole(&data))
2511                 return; // error
2512         submodel = 0;
2513         for (;;)
2514         {
2515                 if (!COM_ParseTokenConsole(&data))
2516                         break;
2517                 if (com_token[0] != '{')
2518                         return; // error
2519                 // entity
2520                 firstbrush = true;
2521                 numbrushes = 0;
2522                 maxbrushes = 256;
2523                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2524                 for (;;)
2525                 {
2526                         if (!COM_ParseTokenConsole(&data))
2527                                 return; // error
2528                         if (com_token[0] == '}')
2529                                 break; // end of entity
2530                         if (com_token[0] == '{')
2531                         {
2532                                 // brush
2533                                 if (firstbrush)
2534                                 {
2535                                         if (submodel)
2536                                         {
2537                                                 if (submodel > loadmodel->brush.numsubmodels)
2538                                                 {
2539                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2540                                                         model = NULL;
2541                                                 }
2542                                                 else
2543                                                         model = loadmodel->brush.submodels[submodel];
2544                                         }
2545                                         else
2546                                                 model = loadmodel;
2547                                 }
2548                                 for (;;)
2549                                 {
2550                                         if (!COM_ParseTokenConsole(&data))
2551                                                 return; // error
2552                                         if (com_token[0] == '}')
2553                                                 break; // end of brush
2554                                         // each brush face should be this format:
2555                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2556                                         // FIXME: support hl .map format
2557                                         for (pointnum = 0;pointnum < 3;pointnum++)
2558                                         {
2559                                                 COM_ParseTokenConsole(&data);
2560                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2561                                                 {
2562                                                         COM_ParseTokenConsole(&data);
2563                                                         point[pointnum][componentnum] = atof(com_token);
2564                                                 }
2565                                                 COM_ParseTokenConsole(&data);
2566                                         }
2567                                         COM_ParseTokenConsole(&data);
2568                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2569                                         COM_ParseTokenConsole(&data);
2570                                         //scroll_s = atof(com_token);
2571                                         COM_ParseTokenConsole(&data);
2572                                         //scroll_t = atof(com_token);
2573                                         COM_ParseTokenConsole(&data);
2574                                         //rotate = atof(com_token);
2575                                         COM_ParseTokenConsole(&data);
2576                                         //scale_s = atof(com_token);
2577                                         COM_ParseTokenConsole(&data);
2578                                         //scale_t = atof(com_token);
2579                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2580                                         VectorNormalizeDouble(planenormal);
2581                                         planedist = DotProduct(point[0], planenormal);
2582                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2583                                 }
2584                                 continue;
2585                         }
2586                 }
2587         }
2588 #endif
2589 }
2590
2591
2592 #define MAX_PORTALPOINTS 64
2593
2594 typedef struct portal_s
2595 {
2596         mplane_t plane;
2597         mnode_t *nodes[2];              // [0] = front side of plane
2598         struct portal_s *next[2];
2599         int numpoints;
2600         double points[3*MAX_PORTALPOINTS];
2601         struct portal_s *chain; // all portals are linked into a list
2602 }
2603 portal_t;
2604
2605 static portal_t *portalchain;
2606
2607 /*
2608 ===========
2609 AllocPortal
2610 ===========
2611 */
2612 static portal_t *AllocPortal(void)
2613 {
2614         portal_t *p;
2615         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2616         p->chain = portalchain;
2617         portalchain = p;
2618         return p;
2619 }
2620
2621 static void FreePortal(portal_t *p)
2622 {
2623         Mem_Free(p);
2624 }
2625
2626 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2627 {
2628         // process only nodes (leafs already had their box calculated)
2629         if (!node->plane)
2630                 return;
2631
2632         // calculate children first
2633         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2634         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2635
2636         // make combined bounding box from children
2637         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2638         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2639         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2640         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2641         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2642         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2643 }
2644
2645 static void Mod_Q1BSP_FinalizePortals(void)
2646 {
2647         int i, j, numportals, numpoints;
2648         portal_t *p, *pnext;
2649         mportal_t *portal;
2650         mvertex_t *point;
2651         mleaf_t *leaf, *endleaf;
2652
2653         // tally up portal and point counts and recalculate bounding boxes for all
2654         // leafs (because qbsp is very sloppy)
2655         leaf = loadmodel->brush.data_leafs;
2656         endleaf = leaf + loadmodel->brush.num_leafs;
2657         for (;leaf < endleaf;leaf++)
2658         {
2659                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2660                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2661         }
2662         p = portalchain;
2663         numportals = 0;
2664         numpoints = 0;
2665         while (p)
2666         {
2667                 // note: this check must match the one below or it will usually corrupt memory
2668                 // 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
2669                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2670                 {
2671                         numportals += 2;
2672                         numpoints += p->numpoints * 2;
2673                 }
2674                 p = p->chain;
2675         }
2676         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2677         loadmodel->brush.num_portals = numportals;
2678         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2679         loadmodel->brush.num_portalpoints = numpoints;
2680         // clear all leaf portal chains
2681         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2682                 loadmodel->brush.data_leafs[i].portals = NULL;
2683         // process all portals in the global portal chain, while freeing them
2684         portal = loadmodel->brush.data_portals;
2685         point = loadmodel->brush.data_portalpoints;
2686         p = portalchain;
2687         portalchain = NULL;
2688         while (p)
2689         {
2690                 pnext = p->chain;
2691
2692                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2693                 {
2694                         // note: this check must match the one above or it will usually corrupt memory
2695                         // 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
2696                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2697                         {
2698                                 // first make the back to front portal(forward portal)
2699                                 portal->points = point;
2700                                 portal->numpoints = p->numpoints;
2701                                 portal->plane.dist = p->plane.dist;
2702                                 VectorCopy(p->plane.normal, portal->plane.normal);
2703                                 portal->here = (mleaf_t *)p->nodes[1];
2704                                 portal->past = (mleaf_t *)p->nodes[0];
2705                                 // copy points
2706                                 for (j = 0;j < portal->numpoints;j++)
2707                                 {
2708                                         VectorCopy(p->points + j*3, point->position);
2709                                         point++;
2710                                 }
2711                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2712                                 PlaneClassify(&portal->plane);
2713
2714                                 // link into leaf's portal chain
2715                                 portal->next = portal->here->portals;
2716                                 portal->here->portals = portal;
2717
2718                                 // advance to next portal
2719                                 portal++;
2720
2721                                 // then make the front to back portal(backward portal)
2722                                 portal->points = point;
2723                                 portal->numpoints = p->numpoints;
2724                                 portal->plane.dist = -p->plane.dist;
2725                                 VectorNegate(p->plane.normal, portal->plane.normal);
2726                                 portal->here = (mleaf_t *)p->nodes[0];
2727                                 portal->past = (mleaf_t *)p->nodes[1];
2728                                 // copy points
2729                                 for (j = portal->numpoints - 1;j >= 0;j--)
2730                                 {
2731                                         VectorCopy(p->points + j*3, point->position);
2732                                         point++;
2733                                 }
2734                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2735                                 PlaneClassify(&portal->plane);
2736
2737                                 // link into leaf's portal chain
2738                                 portal->next = portal->here->portals;
2739                                 portal->here->portals = portal;
2740
2741                                 // advance to next portal
2742                                 portal++;
2743                         }
2744                         // add the portal's polygon points to the leaf bounding boxes
2745                         for (i = 0;i < 2;i++)
2746                         {
2747                                 leaf = (mleaf_t *)p->nodes[i];
2748                                 for (j = 0;j < p->numpoints;j++)
2749                                 {
2750                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2751                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2752                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2753                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2754                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2755                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2756                                 }
2757                         }
2758                 }
2759                 FreePortal(p);
2760                 p = pnext;
2761         }
2762         // now recalculate the node bounding boxes from the leafs
2763         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2764 }
2765
2766 /*
2767 =============
2768 AddPortalToNodes
2769 =============
2770 */
2771 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2772 {
2773         if (!front)
2774                 Host_Error("AddPortalToNodes: NULL front node");
2775         if (!back)
2776                 Host_Error("AddPortalToNodes: NULL back node");
2777         if (p->nodes[0] || p->nodes[1])
2778                 Host_Error("AddPortalToNodes: already included");
2779         // 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
2780
2781         p->nodes[0] = front;
2782         p->next[0] = (portal_t *)front->portals;
2783         front->portals = (mportal_t *)p;
2784
2785         p->nodes[1] = back;
2786         p->next[1] = (portal_t *)back->portals;
2787         back->portals = (mportal_t *)p;
2788 }
2789
2790 /*
2791 =============
2792 RemovePortalFromNode
2793 =============
2794 */
2795 static void RemovePortalFromNodes(portal_t *portal)
2796 {
2797         int i;
2798         mnode_t *node;
2799         void **portalpointer;
2800         portal_t *t;
2801         for (i = 0;i < 2;i++)
2802         {
2803                 node = portal->nodes[i];
2804
2805                 portalpointer = (void **) &node->portals;
2806                 while (1)
2807                 {
2808                         t = (portal_t *)*portalpointer;
2809                         if (!t)
2810                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2811
2812                         if (t == portal)
2813                         {
2814                                 if (portal->nodes[0] == node)
2815                                 {
2816                                         *portalpointer = portal->next[0];
2817                                         portal->nodes[0] = NULL;
2818                                 }
2819                                 else if (portal->nodes[1] == node)
2820                                 {
2821                                         *portalpointer = portal->next[1];
2822                                         portal->nodes[1] = NULL;
2823                                 }
2824                                 else
2825                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2826                                 break;
2827                         }
2828
2829                         if (t->nodes[0] == node)
2830                                 portalpointer = (void **) &t->next[0];
2831                         else if (t->nodes[1] == node)
2832                                 portalpointer = (void **) &t->next[1];
2833                         else
2834                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2835                 }
2836         }
2837 }
2838
2839 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2840 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2841 {
2842         int i, side;
2843         mnode_t *front, *back, *other_node;
2844         mplane_t clipplane, *plane;
2845         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2846         int numfrontpoints, numbackpoints;
2847         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
2848
2849         // if a leaf, we're done
2850         if (!node->plane)
2851                 return;
2852
2853         plane = node->plane;
2854
2855         front = node->children[0];
2856         back = node->children[1];
2857         if (front == back)
2858                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
2859
2860         // create the new portal by generating a polygon for the node plane,
2861         // and clipping it by all of the other portals(which came from nodes above this one)
2862         nodeportal = AllocPortal();
2863         nodeportal->plane = *plane;
2864
2865         // 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)
2866         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);
2867         nodeportal->numpoints = 4;
2868         side = 0;       // shut up compiler warning
2869         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
2870         {
2871                 clipplane = portal->plane;
2872                 if (portal->nodes[0] == portal->nodes[1])
2873                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
2874                 if (portal->nodes[0] == node)
2875                         side = 0;
2876                 else if (portal->nodes[1] == node)
2877                 {
2878                         clipplane.dist = -clipplane.dist;
2879                         VectorNegate(clipplane.normal, clipplane.normal);
2880                         side = 1;
2881                 }
2882                 else
2883                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2884
2885                 for (i = 0;i < nodeportal->numpoints*3;i++)
2886                         frontpoints[i] = nodeportal->points[i];
2887                 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);
2888                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
2889                         break;
2890         }
2891
2892         if (nodeportal->numpoints < 3)
2893         {
2894                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
2895                 nodeportal->numpoints = 0;
2896         }
2897         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
2898         {
2899                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
2900                 nodeportal->numpoints = 0;
2901         }
2902
2903         AddPortalToNodes(nodeportal, front, back);
2904
2905         // split the portals of this node along this node's plane and assign them to the children of this node
2906         // (migrating the portals downward through the tree)
2907         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
2908         {
2909                 if (portal->nodes[0] == portal->nodes[1])
2910                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
2911                 if (portal->nodes[0] == node)
2912                         side = 0;
2913                 else if (portal->nodes[1] == node)
2914                         side = 1;
2915                 else
2916                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
2917                 nextportal = portal->next[side];
2918                 if (!portal->numpoints)
2919                         continue;
2920
2921                 other_node = portal->nodes[!side];
2922                 RemovePortalFromNodes(portal);
2923
2924                 // cut the portal into two portals, one on each side of the node plane
2925                 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);
2926
2927                 if (!numfrontpoints)
2928                 {
2929                         if (side == 0)
2930                                 AddPortalToNodes(portal, back, other_node);
2931                         else
2932                                 AddPortalToNodes(portal, other_node, back);
2933                         continue;
2934                 }
2935                 if (!numbackpoints)
2936                 {
2937                         if (side == 0)
2938                                 AddPortalToNodes(portal, front, other_node);
2939                         else
2940                                 AddPortalToNodes(portal, other_node, front);
2941                         continue;
2942                 }
2943
2944                 // the portal is split
2945                 splitportal = AllocPortal();
2946                 temp = splitportal->chain;
2947                 *splitportal = *portal;
2948                 splitportal->chain = temp;
2949                 for (i = 0;i < numbackpoints*3;i++)
2950                         splitportal->points[i] = backpoints[i];
2951                 splitportal->numpoints = numbackpoints;
2952                 for (i = 0;i < numfrontpoints*3;i++)
2953                         portal->points[i] = frontpoints[i];
2954                 portal->numpoints = numfrontpoints;
2955
2956                 if (side == 0)
2957                 {
2958                         AddPortalToNodes(portal, front, other_node);
2959                         AddPortalToNodes(splitportal, back, other_node);
2960                 }
2961                 else
2962                 {
2963                         AddPortalToNodes(portal, other_node, front);
2964                         AddPortalToNodes(splitportal, other_node, back);
2965                 }
2966         }
2967
2968         Mod_Q1BSP_RecursiveNodePortals(front);
2969         Mod_Q1BSP_RecursiveNodePortals(back);
2970 }
2971
2972 static void Mod_Q1BSP_MakePortals(void)
2973 {
2974         portalchain = NULL;
2975         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
2976         Mod_Q1BSP_FinalizePortals();
2977 }
2978
2979 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
2980 {
2981         int i, j, stylecounts[256], totalcount, remapstyles[256];
2982         msurface_t *surface;
2983         memset(stylecounts, 0, sizeof(stylecounts));
2984         for (i = 0;i < model->nummodelsurfaces;i++)
2985         {
2986                 surface = model->data_surfaces + model->firstmodelsurface + i;
2987                 for (j = 0;j < MAXLIGHTMAPS;j++)
2988                         stylecounts[surface->lightmapinfo->styles[j]]++;
2989         }
2990         totalcount = 0;
2991         model->brushq1.light_styles = 0;
2992         for (i = 0;i < 255;i++)
2993         {
2994                 if (stylecounts[i])
2995                 {
2996                         remapstyles[i] = model->brushq1.light_styles++;
2997                         totalcount += stylecounts[i] + 1;
2998                 }
2999         }
3000         if (!totalcount)
3001                 return;
3002         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
3003         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3004         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3005         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3006         model->brushq1.light_styles = 0;
3007         for (i = 0;i < 255;i++)
3008                 if (stylecounts[i])
3009                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3010         j = 0;
3011         for (i = 0;i < model->brushq1.light_styles;i++)
3012         {
3013                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3014                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3015         }
3016         for (i = 0;i < model->nummodelsurfaces;i++)
3017         {
3018                 surface = model->data_surfaces + model->firstmodelsurface + i;
3019                 for (j = 0;j < MAXLIGHTMAPS;j++)
3020                         if (surface->lightmapinfo->styles[j] != 255)
3021                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3022         }
3023         j = 0;
3024         for (i = 0;i < model->brushq1.light_styles;i++)
3025         {
3026                 *model->brushq1.light_styleupdatechains[i] = NULL;
3027                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3028                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3029         }
3030 }
3031
3032 //Returns PVS data for a given point
3033 //(note: can return NULL)
3034 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3035 {
3036         mnode_t *node;
3037         node = model->brush.data_nodes;
3038         while (node->plane)
3039                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3040         if (((mleaf_t *)node)->clusterindex >= 0)
3041                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3042         else
3043                 return NULL;
3044 }
3045
3046 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3047 {
3048         while (node->plane)
3049         {
3050                 float d = PlaneDiff(org, node->plane);
3051                 if (d > radius)
3052                         node = node->children[0];
3053                 else if (d < -radius)
3054                         node = node->children[1];
3055                 else
3056                 {
3057                         // go down both sides
3058                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3059                         node = node->children[1];
3060                 }
3061         }
3062         // if this leaf is in a cluster, accumulate the pvs bits
3063         if (((mleaf_t *)node)->clusterindex >= 0)
3064         {
3065                 int i;
3066                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3067                 for (i = 0;i < pvsbytes;i++)
3068                         pvsbuffer[i] |= pvs[i];
3069         }
3070 }
3071
3072 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3073 //of the given point.
3074 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3075 {
3076         int bytes = model->brush.num_pvsclusterbytes;
3077         bytes = min(bytes, pvsbufferlength);
3078         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3079         {
3080                 memset(pvsbuffer, 0xFF, bytes);
3081                 return bytes;
3082         }
3083         memset(pvsbuffer, 0, bytes);
3084         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3085         return bytes;
3086 }
3087
3088 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3089 {
3090         vec3_t size;
3091         const hull_t *hull;
3092
3093         VectorSubtract(inmaxs, inmins, size);
3094         if (cmodel->brush.ismcbsp)
3095         {
3096                 if (size[0] < 3)
3097                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3098                 else if (size[2] < 48) // pick the nearest of 40 or 56
3099                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3100                 else
3101                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3102         }
3103         else if (cmodel->brush.ishlbsp)
3104         {
3105                 if (size[0] < 3)
3106                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3107                 else if (size[0] <= 32)
3108                 {
3109                         if (size[2] < 54) // pick the nearest of 36 or 72
3110                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3111                         else
3112                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3113                 }
3114                 else
3115                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3116         }
3117         else
3118         {
3119                 if (size[0] < 3)
3120                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3121                 else if (size[0] <= 32)
3122                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3123                 else
3124                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3125         }
3126         VectorCopy(inmins, outmins);
3127         VectorAdd(inmins, hull->clip_size, outmaxs);
3128 }
3129
3130 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3131 {
3132         int i, j, k;
3133         dheader_t *header;
3134         dmodel_t *bm;
3135         mempool_t *mainmempool;
3136         float dist, modelyawradius, modelradius, *vec;
3137         msurface_t *surface;
3138         int numshadowmeshtriangles;
3139         dheader_t _header;
3140         hullinfo_t hullinfo;
3141
3142         mod->type = mod_brushq1;
3143
3144         if (!memcmp (buffer, "MCBSPpad", 8))
3145         {
3146                 unsigned char   *index;
3147
3148                 mod->brush.ismcbsp = true;
3149                 mod->brush.ishlbsp = false;
3150
3151                 mod_base = (unsigned char*)buffer;
3152
3153                 index = mod_base;
3154                 index += 8;
3155                 i = SB_ReadInt (&index);
3156                 if (i != MCBSPVERSION)
3157                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3158
3159         // read hull info
3160                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3161                 hullinfo.filehulls = hullinfo.numhulls;
3162                 VectorClear (hullinfo.hullsizes[0][0]);
3163                 VectorClear (hullinfo.hullsizes[0][1]);
3164                 for (i = 1; i < hullinfo.numhulls; i++)
3165                 {
3166                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3167                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3168                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3169                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3170                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3171                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3172                 }
3173
3174         // read lumps
3175                 _header.version = 0;
3176                 for (i = 0; i < HEADER_LUMPS; i++)
3177                 {
3178                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3179                         _header.lumps[i].filelen = SB_ReadInt (&index);
3180                 }
3181
3182                 header = &_header;
3183         }
3184         else
3185         {
3186                 header = (dheader_t *)buffer;
3187
3188                 i = LittleLong(header->version);
3189                 if (i != BSPVERSION && i != 30)
3190                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3191                 mod->brush.ishlbsp = i == 30;
3192                 mod->brush.ismcbsp = false;
3193
3194         // fill in hull info
3195                 VectorClear (hullinfo.hullsizes[0][0]);
3196                 VectorClear (hullinfo.hullsizes[0][1]);
3197                 if (mod->brush.ishlbsp)
3198                 {
3199                         hullinfo.numhulls = 4;
3200                         hullinfo.filehulls = 4;
3201                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3202                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3203                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3204                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3205                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3206                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3207                 }
3208                 else
3209                 {
3210                         hullinfo.numhulls = 3;
3211                         hullinfo.filehulls = 4;
3212                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3213                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3214                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3215                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3216                 }
3217
3218         // read lumps
3219                 mod_base = (unsigned char*)buffer;
3220                 for (i = 0; i < HEADER_LUMPS; i++)
3221                 {
3222                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3223                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3224                 }
3225         }
3226
3227         mod->soundfromcenter = true;
3228         mod->TraceBox = Mod_Q1BSP_TraceBox;
3229         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3230         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3231         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3232         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3233         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3234         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3235         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3236         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3237         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3238         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3239         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3240         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3241         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3242
3243         if (loadmodel->isworldmodel)
3244         {
3245                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3246                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3247         }
3248
3249 // load into heap
3250
3251         // store which lightmap format to use
3252         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3253
3254         mod->brush.qw_md4sum = 0;
3255         mod->brush.qw_md4sum2 = 0;
3256         for (i = 0;i < HEADER_LUMPS;i++)
3257         {
3258                 if (i == LUMP_ENTITIES)
3259                         continue;
3260                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3261                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3262                         continue;
3263                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3264         }
3265
3266         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3267         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3268         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3269         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3270         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3271         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3272         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3273         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3274         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3275         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3276         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3277         // load submodels before leafs because they contain the number of vis leafs
3278         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3279         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3280         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3281         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3282
3283         if (!mod->brushq1.lightdata)
3284                 mod->brush.LightPoint = NULL;
3285
3286         if (mod->brushq1.data_compressedpvs)
3287                 Mem_Free(mod->brushq1.data_compressedpvs);
3288         mod->brushq1.data_compressedpvs = NULL;
3289         mod->brushq1.num_compressedpvs = 0;
3290
3291         Mod_Q1BSP_MakeHull0();
3292         Mod_Q1BSP_MakePortals();
3293
3294         mod->numframes = 2;             // regular and alternate animation
3295         mod->numskins = 1;
3296
3297         mainmempool = mod->mempool;
3298
3299         // make a single combined shadow mesh to allow optimized shadow volume creation
3300         numshadowmeshtriangles = 0;
3301         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3302         {
3303                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3304                 numshadowmeshtriangles += surface->num_triangles;
3305         }
3306         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3307         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3308                 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));
3309         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
3310         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3311
3312         if (loadmodel->brush.numsubmodels)
3313                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3314
3315         if (loadmodel->isworldmodel)
3316         {
3317                 // clear out any stale submodels or worldmodels lying around
3318                 // if we did this clear before now, an error might abort loading and
3319                 // leave things in a bad state
3320                 Mod_RemoveStaleWorldModels(loadmodel);
3321         }
3322
3323         // LordHavoc: to clear the fog around the original quake submodel code, I
3324         // will explain:
3325         // first of all, some background info on the submodels:
3326         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3327         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3328         // now the weird for loop itself:
3329         // the loop functions in an odd way, on each iteration it sets up the
3330         // current 'mod' model (which despite the confusing code IS the model of
3331         // the number i), at the end of the loop it duplicates the model to become
3332         // the next submodel, and loops back to set up the new submodel.
3333
3334         // LordHavoc: now the explanation of my sane way (which works identically):
3335         // set up the world model, then on each submodel copy from the world model
3336         // and set up the submodel with the respective model info.
3337         for (i = 0;i < mod->brush.numsubmodels;i++)
3338         {
3339                 // LordHavoc: this code was originally at the end of this loop, but
3340                 // has been transformed to something more readable at the start here.
3341
3342                 if (i > 0)
3343                 {
3344                         char name[10];
3345                         // LordHavoc: only register submodels if it is the world
3346                         // (prevents external bsp models from replacing world submodels with
3347                         //  their own)
3348                         if (!loadmodel->isworldmodel)
3349                                 continue;
3350                         // duplicate the basic information
3351                         sprintf(name, "*%i", i);
3352                         mod = Mod_FindName(name);
3353                         // copy the base model to this one
3354                         *mod = *loadmodel;
3355                         // rename the clone back to its proper name
3356                         strlcpy(mod->name, name, sizeof(mod->name));
3357                         // textures and memory belong to the main model
3358                         mod->texturepool = NULL;
3359                         mod->mempool = NULL;
3360                 }
3361
3362                 mod->brush.submodel = i;
3363
3364                 if (loadmodel->brush.submodels)
3365                         loadmodel->brush.submodels[i] = mod;
3366
3367                 bm = &mod->brushq1.submodels[i];
3368
3369                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3370                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3371                 {
3372                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3373                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3374                 }
3375
3376                 mod->firstmodelsurface = bm->firstface;
3377                 mod->nummodelsurfaces = bm->numfaces;
3378
3379                 // make the model surface list (used by shadowing/lighting)
3380                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3381                 for (j = 0;j < mod->nummodelsurfaces;j++)
3382                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3383
3384                 // this gets altered below if sky is used
3385                 mod->DrawSky = NULL;
3386                 mod->Draw = R_Q1BSP_Draw;
3387                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3388                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3389                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3390                 mod->DrawLight = R_Q1BSP_DrawLight;
3391                 if (i != 0)
3392                 {
3393                         mod->brush.GetPVS = NULL;
3394                         mod->brush.FatPVS = NULL;
3395                         mod->brush.BoxTouchingPVS = NULL;
3396                         mod->brush.BoxTouchingLeafPVS = NULL;
3397                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3398                         mod->brush.FindBoxClusters = NULL;
3399                         mod->brush.LightPoint = NULL;
3400                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3401                 }
3402                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3403                 if (mod->nummodelsurfaces)
3404                 {
3405                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3406                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3407                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3408                         modelyawradius = 0;
3409                         modelradius = 0;
3410                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3411                         {
3412                                 // we only need to have a drawsky function if it is used(usually only on world model)
3413                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3414                                         mod->DrawSky = R_Q1BSP_DrawSky;
3415                                 // calculate bounding shapes
3416                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3417                                 {
3418                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3419                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3420                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3421                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3422                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3423                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3424                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3425                                         if (modelyawradius < dist)
3426                                                 modelyawradius = dist;
3427                                         dist += vec[2]*vec[2];
3428                                         if (modelradius < dist)
3429                                                 modelradius = dist;
3430                                 }
3431                         }
3432                         modelyawradius = sqrt(modelyawradius);
3433                         modelradius = sqrt(modelradius);
3434                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3435                         mod->yawmins[2] = mod->normalmins[2];
3436                         mod->yawmaxs[2] = mod->normalmaxs[2];
3437                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3438                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3439                         mod->radius = modelradius;
3440                         mod->radius2 = modelradius * modelradius;
3441                 }
3442                 else
3443                 {
3444                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3445                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3446                 }
3447                 //mod->brushq1.num_visleafs = bm->visleafs;
3448         }
3449
3450         Mod_Q1BSP_LoadMapBrushes();
3451
3452         //Mod_Q1BSP_ProcessLightList();
3453
3454         if (developer.integer >= 10)
3455                 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);
3456 }
3457
3458 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3459 {
3460 }
3461
3462 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3463 {
3464 /*
3465         d_t *in;
3466         m_t *out;
3467         int i, count;
3468
3469         in = (void *)(mod_base + l->fileofs);
3470         if (l->filelen % sizeof(*in))
3471                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3472         count = l->filelen / sizeof(*in);
3473         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3474
3475         loadmodel-> = out;
3476         loadmodel->num = count;
3477
3478         for (i = 0;i < count;i++, in++, out++)
3479         {
3480         }
3481 */
3482 }
3483
3484 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3485 {
3486 /*
3487         d_t *in;
3488         m_t *out;
3489         int i, count;
3490
3491         in = (void *)(mod_base + l->fileofs);
3492         if (l->filelen % sizeof(*in))
3493                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3494         count = l->filelen / sizeof(*in);
3495         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3496
3497         loadmodel-> = out;
3498         loadmodel->num = count;
3499
3500         for (i = 0;i < count;i++, in++, out++)
3501         {
3502         }
3503 */
3504 }
3505
3506 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3507 {
3508 /*
3509         d_t *in;
3510         m_t *out;
3511         int i, count;
3512
3513         in = (void *)(mod_base + l->fileofs);
3514         if (l->filelen % sizeof(*in))
3515                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3516         count = l->filelen / sizeof(*in);
3517         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3518
3519         loadmodel-> = out;
3520         loadmodel->num = count;
3521
3522         for (i = 0;i < count;i++, in++, out++)
3523         {
3524         }
3525 */
3526 }
3527
3528 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3529 {
3530 /*
3531         d_t *in;
3532         m_t *out;
3533         int i, count;
3534
3535         in = (void *)(mod_base + l->fileofs);
3536         if (l->filelen % sizeof(*in))
3537                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3538         count = l->filelen / sizeof(*in);
3539         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3540
3541         loadmodel-> = out;
3542         loadmodel->num = count;
3543
3544         for (i = 0;i < count;i++, in++, out++)
3545         {
3546         }
3547 */
3548 }
3549
3550 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3551 {
3552 /*
3553         d_t *in;
3554         m_t *out;
3555         int i, count;
3556
3557         in = (void *)(mod_base + l->fileofs);
3558         if (l->filelen % sizeof(*in))
3559                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3560         count = l->filelen / sizeof(*in);
3561         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3562
3563         loadmodel-> = out;
3564         loadmodel->num = count;
3565
3566         for (i = 0;i < count;i++, in++, out++)
3567         {
3568         }
3569 */
3570 }
3571
3572 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3573 {
3574 /*
3575         d_t *in;
3576         m_t *out;
3577         int i, count;
3578
3579         in = (void *)(mod_base + l->fileofs);
3580         if (l->filelen % sizeof(*in))
3581                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3582         count = l->filelen / sizeof(*in);
3583         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3584
3585         loadmodel-> = out;
3586         loadmodel->num = count;
3587
3588         for (i = 0;i < count;i++, in++, out++)
3589         {
3590         }
3591 */
3592 }
3593
3594 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3595 {
3596 /*
3597         d_t *in;
3598         m_t *out;
3599         int i, count;
3600
3601         in = (void *)(mod_base + l->fileofs);
3602         if (l->filelen % sizeof(*in))
3603                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3604         count = l->filelen / sizeof(*in);
3605         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3606
3607         loadmodel-> = out;
3608         loadmodel->num = count;
3609
3610         for (i = 0;i < count;i++, in++, out++)
3611         {
3612         }
3613 */
3614 }
3615
3616 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3617 {
3618 /*
3619         d_t *in;
3620         m_t *out;
3621         int i, count;
3622
3623         in = (void *)(mod_base + l->fileofs);
3624         if (l->filelen % sizeof(*in))
3625                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3626         count = l->filelen / sizeof(*in);
3627         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3628
3629         loadmodel-> = out;
3630         loadmodel->num = count;
3631
3632         for (i = 0;i < count;i++, in++, out++)
3633         {
3634         }
3635 */
3636 }
3637
3638 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3639 {
3640 /*
3641         d_t *in;
3642         m_t *out;
3643         int i, count;
3644
3645         in = (void *)(mod_base + l->fileofs);
3646         if (l->filelen % sizeof(*in))
3647                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3648         count = l->filelen / sizeof(*in);
3649         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3650
3651         loadmodel-> = out;
3652         loadmodel->num = count;
3653
3654         for (i = 0;i < count;i++, in++, out++)
3655         {
3656         }
3657 */
3658 }
3659
3660 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3661 {
3662 /*
3663         d_t *in;
3664         m_t *out;
3665         int i, count;
3666
3667         in = (void *)(mod_base + l->fileofs);
3668         if (l->filelen % sizeof(*in))
3669                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3670         count = l->filelen / sizeof(*in);
3671         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3672
3673         loadmodel-> = out;
3674         loadmodel->num = count;
3675
3676         for (i = 0;i < count;i++, in++, out++)
3677         {
3678         }
3679 */
3680 }
3681
3682 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3683 {
3684 /*
3685         d_t *in;
3686         m_t *out;
3687         int i, count;
3688
3689         in = (void *)(mod_base + l->fileofs);
3690         if (l->filelen % sizeof(*in))
3691                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3692         count = l->filelen / sizeof(*in);
3693         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3694
3695         loadmodel-> = out;
3696         loadmodel->num = count;
3697
3698         for (i = 0;i < count;i++, in++, out++)
3699         {
3700         }
3701 */
3702 }
3703
3704 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3705 {
3706 /*
3707         d_t *in;
3708         m_t *out;
3709         int i, count;
3710
3711         in = (void *)(mod_base + l->fileofs);
3712         if (l->filelen % sizeof(*in))
3713                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3714         count = l->filelen / sizeof(*in);
3715         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3716
3717         loadmodel-> = out;
3718         loadmodel->num = count;
3719
3720         for (i = 0;i < count;i++, in++, out++)
3721         {
3722         }
3723 */
3724 }
3725
3726 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3727 {
3728 /*
3729         d_t *in;
3730         m_t *out;
3731         int i, count;
3732
3733         in = (void *)(mod_base + l->fileofs);
3734         if (l->filelen % sizeof(*in))
3735                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3736         count = l->filelen / sizeof(*in);
3737         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3738
3739         loadmodel-> = out;
3740         loadmodel->num = count;
3741
3742         for (i = 0;i < count;i++, in++, out++)
3743         {
3744         }
3745 */
3746 }
3747
3748 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3749 {
3750 /*
3751         d_t *in;
3752         m_t *out;
3753         int i, count;
3754
3755         in = (void *)(mod_base + l->fileofs);
3756         if (l->filelen % sizeof(*in))
3757                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3758         count = l->filelen / sizeof(*in);
3759         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3760
3761         loadmodel-> = out;
3762         loadmodel->num = count;
3763
3764         for (i = 0;i < count;i++, in++, out++)
3765         {
3766         }
3767 */
3768 }
3769
3770 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3771 {
3772 /*
3773         d_t *in;
3774         m_t *out;
3775         int i, count;
3776
3777         in = (void *)(mod_base + l->fileofs);
3778         if (l->filelen % sizeof(*in))
3779                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3780         count = l->filelen / sizeof(*in);
3781         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3782
3783         loadmodel-> = out;
3784         loadmodel->num = count;
3785
3786         for (i = 0;i < count;i++, in++, out++)
3787         {
3788         }
3789 */
3790 }
3791
3792 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3793 {
3794 /*
3795         d_t *in;
3796         m_t *out;
3797         int i, count;
3798
3799         in = (void *)(mod_base + l->fileofs);
3800         if (l->filelen % sizeof(*in))
3801                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3802         count = l->filelen / sizeof(*in);
3803         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3804
3805         loadmodel-> = out;
3806         loadmodel->num = count;
3807
3808         for (i = 0;i < count;i++, in++, out++)
3809         {
3810         }
3811 */
3812 }
3813
3814 static void Mod_Q2BSP_LoadModels(lump_t *l)
3815 {
3816 /*
3817         d_t *in;
3818         m_t *out;
3819         int i, count;
3820
3821         in = (void *)(mod_base + l->fileofs);
3822         if (l->filelen % sizeof(*in))
3823                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3824         count = l->filelen / sizeof(*in);
3825         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3826
3827         loadmodel-> = out;
3828         loadmodel->num = count;
3829
3830         for (i = 0;i < count;i++, in++, out++)
3831         {
3832         }
3833 */
3834 }
3835
3836 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3837 {
3838         int i;
3839         q2dheader_t *header;
3840
3841         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3842
3843         mod->type = mod_brushq2;
3844
3845         header = (q2dheader_t *)buffer;
3846
3847         i = LittleLong(header->version);
3848         if (i != Q2BSPVERSION)
3849                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
3850         mod->brush.ishlbsp = false;
3851         mod->brush.ismcbsp = false;
3852         if (loadmodel->isworldmodel)
3853         {
3854                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3855                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3856         }
3857
3858         mod_base = (unsigned char *)header;
3859
3860         // swap all the lumps
3861         for (i = 0;i < (int) sizeof(*header) / 4;i++)
3862                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
3863
3864         // store which lightmap format to use
3865         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3866
3867         mod->brush.qw_md4sum = 0;
3868         mod->brush.qw_md4sum2 = 0;
3869         for (i = 0;i < Q2HEADER_LUMPS;i++)
3870         {
3871                 if (i == Q2LUMP_ENTITIES)
3872                         continue;
3873                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3874                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
3875                         continue;
3876                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
3877         }
3878
3879         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
3880         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
3881         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
3882         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
3883         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
3884         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
3885         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
3886         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
3887         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
3888         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
3889         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
3890         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
3891         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
3892         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
3893         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
3894         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
3895         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
3896         // LordHavoc: must go last because this makes the submodels
3897         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
3898 }
3899
3900 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
3901 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
3902
3903 static void Mod_Q3BSP_LoadEntities(lump_t *l)
3904 {
3905         const char *data;
3906         char key[128], value[MAX_INPUTLINE];
3907         float v[3];
3908         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
3909         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
3910         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
3911         if (!l->filelen)
3912                 return;
3913         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
3914         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
3915         data = loadmodel->brush.entities;
3916         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
3917         if (data && COM_ParseTokenConsole(&data) && com_token[0] == '{')
3918         {
3919                 while (1)
3920                 {
3921                         if (!COM_ParseTokenConsole(&data))
3922                                 break; // error
3923                         if (com_token[0] == '}')
3924                                 break; // end of worldspawn
3925                         if (com_token[0] == '_')
3926                                 strlcpy(key, com_token + 1, sizeof(key));
3927                         else
3928                                 strlcpy(key, com_token, sizeof(key));
3929                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
3930                                 key[strlen(key)-1] = 0;
3931                         if (!COM_ParseTokenConsole(&data))
3932                                 break; // error
3933                         strlcpy(value, com_token, sizeof(value));
3934                         if (!strcmp("gridsize", key))
3935                         {
3936                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
3937                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
3938                         }
3939                 }
3940         }
3941 }
3942
3943 // FIXME: make MAXSHADERS dynamic
3944 #define Q3SHADER_MAXSHADERS 4096
3945 #define Q3SHADER_MAXLAYERS 8
3946
3947 typedef struct q3shaderinfo_layer_s
3948 {
3949         int alphatest;
3950         int clampmap;
3951         float framerate;
3952         int numframes;
3953         char texturename[TEXTURE_MAXFRAMES][Q3PATHLENGTH];
3954         int blendfunc[2];
3955         qboolean rgbgenvertex;
3956         qboolean alphagenvertex;
3957 }
3958 q3shaderinfo_layer_t;
3959
3960 typedef struct q3shaderinfo_s
3961 {
3962         char name[Q3PATHLENGTH];
3963         int surfaceparms;
3964         int textureflags;
3965         int numlayers;
3966         qboolean lighting;
3967         qboolean vertexalpha;
3968         qboolean textureblendalpha;
3969         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
3970         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
3971         char skyboxname[Q3PATHLENGTH];
3972 }
3973 q3shaderinfo_t;
3974
3975 int q3shaders_numshaders;
3976 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
3977
3978 static void Mod_Q3BSP_LoadShaders(void)
3979 {
3980         int j;
3981         int fileindex;
3982         fssearch_t *search;
3983         char *f;
3984         const char *text;
3985         q3shaderinfo_t *shader;
3986         q3shaderinfo_layer_t *layer;
3987         int numparameters;
3988         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
3989         search = FS_Search("scripts/*.shader", true, false);
3990         if (!search)
3991                 return;
3992         q3shaders_numshaders = 0;
3993         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
3994         {
3995                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
3996                 if (!f)
3997                         continue;
3998                 while (COM_ParseToken(&text, false))
3999                 {
4000                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
4001                         {
4002                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
4003                                 break;
4004                         }
4005                         shader = q3shaders_shaders + q3shaders_numshaders++;
4006                         memset(shader, 0, sizeof(*shader));
4007                         strlcpy(shader->name, com_token, sizeof(shader->name));
4008                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
4009                         {
4010                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4011                                 break;
4012                         }
4013                         while (COM_ParseToken(&text, false))
4014                         {
4015                                 if (!strcasecmp(com_token, "}"))
4016                                         break;
4017                                 if (!strcasecmp(com_token, "{"))
4018                                 {
4019                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4020                                         {
4021                                                 layer = shader->layers + shader->numlayers++;
4022                                                 layer->rgbgenvertex = false;
4023                                                 layer->alphagenvertex = false;
4024                                                 layer->blendfunc[0] = GL_ONE;
4025                                                 layer->blendfunc[1] = GL_ZERO;
4026                                         }
4027                                         else
4028                                                 layer = NULL;
4029                                         while (COM_ParseToken(&text, false))
4030                                         {
4031                                                 if (!strcasecmp(com_token, "}"))
4032                                                         break;
4033                                                 if (!strcasecmp(com_token, "\n"))
4034                                                         continue;
4035                                                 if (layer == NULL)
4036                                                         continue;
4037                                                 numparameters = 0;
4038                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4039                                                 {
4040                                                         if (j < TEXTURE_MAXFRAMES + 4)
4041                                                         {
4042                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4043                                                                 numparameters = j + 1;
4044                                                         }
4045                                                         if (!COM_ParseToken(&text, true))
4046                                                                 break;
4047                                                 }
4048                                                 if (developer.integer >= 100)
4049                                                 {
4050                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4051                                                         for (j = 0;j < numparameters;j++)
4052                                                                 Con_Printf(" %s", parameter[j]);
4053                                                         Con_Print("\n");
4054                                                 }
4055                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4056                                                 {
4057                                                         if (numparameters == 2)
4058                                                         {
4059                                                                 if (!strcasecmp(parameter[1], "add"))
4060                                                                 {
4061                                                                         layer->blendfunc[0] = GL_ONE;
4062                                                                         layer->blendfunc[1] = GL_ONE;
4063                                                                 }
4064                                                                 else if (!strcasecmp(parameter[1], "filter"))
4065                                                                 {
4066                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4067                                                                         layer->blendfunc[1] = GL_ZERO;
4068                                                                 }
4069                                                                 else if (!strcasecmp(parameter[1], "blend"))
4070                                                                 {
4071                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4072                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4073                                                                 }
4074                                                         }
4075                                                         else if (numparameters == 3)
4076                                                         {
4077                                                                 int k;
4078                                                                 for (k = 0;k < 2;k++)
4079                                                                 {
4080                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4081                                                                                 layer->blendfunc[k] = GL_ONE;
4082                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4083                                                                                 layer->blendfunc[k] = GL_ZERO;
4084                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4085                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4086                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4087                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4088                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4089                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4090                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4091                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4092                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4093                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4094                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4095                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4096                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4097                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4098                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4099                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4100                                                                         else
4101                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4102                                                                 }
4103                                                         }
4104                                                 }
4105                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4106                                                         layer->alphatest = true;
4107                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4108                                                 {
4109                                                         if (!strcasecmp(parameter[0], "clampmap"))
4110                                                                 layer->clampmap = true;
4111                                                         layer->numframes = 1;
4112                                                         layer->framerate = 1;
4113                                                         strlcpy(layer->texturename[0], parameter[1], sizeof(layer->texturename));
4114                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4115                                                                 shader->lighting = true;
4116                                                 }
4117                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
4118                                                 {
4119                                                         int i;
4120                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
4121                                                         layer->framerate = atoi(parameter[1]);
4122                                                         for (i = 0;i < layer->numframes;i++)
4123                                                                 strlcpy(layer->texturename[i], parameter[i + 2], sizeof(layer->texturename));
4124                                                 }
4125                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4126                                                         layer->rgbgenvertex = true;
4127                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4128                                                         layer->alphagenvertex = true;
4129                                                 // break out a level if it was }
4130                                                 if (!strcasecmp(com_token, "}"))
4131                                                         break;
4132                                         }
4133                                         if (layer->rgbgenvertex)
4134                                                 shader->lighting = true;
4135                                         if (layer->alphagenvertex)
4136                                         {
4137                                                 if (layer == shader->layers + 0)
4138                                                 {
4139                                                         // vertex controlled transparency
4140                                                         shader->vertexalpha = true;
4141                                                 }
4142                                                 else
4143                                                 {
4144                                                         // multilayer terrain shader or similar
4145                                                         shader->textureblendalpha = true;
4146                                                 }
4147                                         }
4148                                         continue;
4149                                 }
4150                                 numparameters = 0;
4151                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4152                                 {
4153                                         if (j < TEXTURE_MAXFRAMES + 4)
4154                                         {
4155                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4156                                                 numparameters = j + 1;
4157                                         }
4158                                         if (!COM_ParseToken(&text, true))
4159                                                 break;
4160                                 }
4161                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4162                                         break;
4163                                 if (developer.integer >= 100)
4164                                 {
4165                                         Con_Printf("%s: ", shader->name);
4166                                         for (j = 0;j < numparameters;j++)
4167                                                 Con_Printf(" %s", parameter[j]);
4168                                         Con_Print("\n");
4169                                 }
4170                                 if (numparameters < 1)
4171                                         continue;
4172                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4173                                 {
4174                                         if (!strcasecmp(parameter[1], "alphashadow"))
4175                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4176                                         else if (!strcasecmp(parameter[1], "areaportal"))
4177                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4178                                         else if (!strcasecmp(parameter[1], "botclip"))
4179                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4180                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4181                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4182                                         else if (!strcasecmp(parameter[1], "detail"))
4183                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4184                                         else if (!strcasecmp(parameter[1], "donotenter"))
4185                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4186                                         else if (!strcasecmp(parameter[1], "dust"))
4187                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4188                                         else if (!strcasecmp(parameter[1], "hint"))
4189                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4190                                         else if (!strcasecmp(parameter[1], "fog"))
4191                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4192                                         else if (!strcasecmp(parameter[1], "lava"))
4193                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4194                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4195                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4196                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4197                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4198                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4199                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4200                                         else if (!strcasecmp(parameter[1], "nodamage"))
4201                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4202                                         else if (!strcasecmp(parameter[1], "nodlight"))
4203                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4204                                         else if (!strcasecmp(parameter[1], "nodraw"))
4205                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4206                                         else if (!strcasecmp(parameter[1], "nodrop"))
4207                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4208                                         else if (!strcasecmp(parameter[1], "noimpact"))
4209                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4210                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4211                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4212                                         else if (!strcasecmp(parameter[1], "nomarks"))
4213                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4214                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4215                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4216                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4217                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4218                                         else if (!strcasecmp(parameter[1], "origin"))
4219                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4220                                         else if (!strcasecmp(parameter[1], "playerclip"))
4221                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4222                                         else if (!strcasecmp(parameter[1], "sky"))
4223                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4224                                         else if (!strcasecmp(parameter[1], "slick"))
4225                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4226                                         else if (!strcasecmp(parameter[1], "slime"))
4227                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4228                                         else if (!strcasecmp(parameter[1], "structural"))
4229                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4230                                         else if (!strcasecmp(parameter[1], "trans"))
4231                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4232                                         else if (!strcasecmp(parameter[1], "water"))
4233                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4234                                         else if (!strcasecmp(parameter[1], "pointlight"))
4235                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4236                                         else
4237                                                 Con_Printf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4238                                 }
4239                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4240                                 {
4241                                         // some q3 skies don't have the sky parm set
4242                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4243                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4244                                 }
4245                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4246                                 {
4247                                         // some q3 skies don't have the sky parm set
4248                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4249                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4250                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4251                                 }
4252                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4253                                 {
4254                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4255                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4256                                 }
4257                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4258                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4259                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4260                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4261                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4262                                 {
4263                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4264                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4265                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4266                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4267                                 }
4268                         }
4269                         // identify if this is a blended terrain shader or similar
4270                         if (shader->numlayers)
4271                         {
4272                                 shader->primarylayer = shader->layers + 0;
4273                                 if ((shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA) || shader->layers[1].alphatest)
4274                                 {
4275                                         // terrain blending or other effects
4276                                         shader->backgroundlayer = shader->layers + 0;
4277                                         shader->primarylayer = shader->layers + 1;
4278                                 }
4279                                 // now see if the lightmap came first, and if so choose the second texture instead
4280                                 if (!strcasecmp(shader->primarylayer->texturename[0], "$lightmap"))
4281                                         shader->primarylayer = shader->layers + 1;
4282                         }
4283                 }
4284                 Mem_Free(f);
4285         }
4286 }
4287
4288 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4289 {
4290         int i;
4291         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4292                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4293                         return q3shaders_shaders + i;
4294         return NULL;
4295 }
4296
4297 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4298 {
4299         q3dtexture_t *in;
4300         texture_t *out;
4301         int i, count, c;
4302
4303         in = (q3dtexture_t *)(mod_base + l->fileofs);
4304         if (l->filelen % sizeof(*in))
4305                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4306         count = l->filelen / sizeof(*in);
4307         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4308
4309         loadmodel->data_textures = out;
4310         loadmodel->num_textures = count;
4311
4312         // parse the Q3 shader files
4313         Mod_Q3BSP_LoadShaders();
4314
4315         c = 0;
4316         for (i = 0;i < count;i++, in++, out++)
4317         {
4318                 q3shaderinfo_t *shader;
4319                 strlcpy (out->name, in->name, sizeof (out->name));
4320                 out->surfaceflags = LittleLong(in->surfaceflags);
4321                 out->supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in->contents));
4322                 shader = Mod_Q3BSP_LookupShader(out->name);
4323                 if (shader)
4324                 {
4325                         out->surfaceparms = shader->surfaceparms;
4326                         out->textureflags = shader->textureflags;
4327                         out->basematerialflags = 0;
4328                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4329                         {
4330                                 out->basematerialflags |= MATERIALFLAG_SKY;
4331                                 if (shader->skyboxname[0])
4332                                 {
4333                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4334                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4335                                 }
4336                         }
4337                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4338                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4339                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4340                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_FULLBRIGHT;
4341                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4342                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4343                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4344                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_WATERALPHA;
4345                         else
4346                                 out->basematerialflags |= MATERIALFLAG_WALL;
4347                         if (shader->layers[0].alphatest)
4348                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_TRANSPARENT;
4349                         out->customblendfunc[0] = GL_ONE;
4350                         out->customblendfunc[1] = GL_ZERO;
4351                         if (shader->numlayers > 0)
4352                         {
4353                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4354                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4355 /*
4356 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4357 * additive               GL_ONE GL_ONE
4358   additive weird         GL_ONE GL_SRC_ALPHA
4359   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4360 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4361   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4362   brighten               GL_DST_COLOR GL_ONE
4363   brighten               GL_ONE GL_SRC_COLOR
4364   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4365   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4366 * modulate               GL_DST_COLOR GL_ZERO
4367 * modulate               GL_ZERO GL_SRC_COLOR
4368   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4369   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4370   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4371 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4372 * no blend               GL_ONE GL_ZERO
4373   nothing                GL_ZERO GL_ONE
4374 */
4375                                 // if not opaque, figure out what blendfunc to use
4376                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4377                                 {
4378                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4379                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4380                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4381                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4382                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4383                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4384                                         else
4385                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_TRANSPARENT;
4386                                 }
4387                         }
4388                         if (!shader->lighting)
4389                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4390                         if (shader->primarylayer && cls.state != ca_dedicated)
4391                         {
4392                                 int j;
4393                                 out->numskinframes = shader->primarylayer->numframes;
4394                                 out->skinframerate = shader->primarylayer->framerate;
4395                                 for (j = 0;j < shader->primarylayer->numframes;j++)
4396                                         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))
4397                                                 Con_Printf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4398                         }
4399                 }
4400                 else
4401                 {
4402                         c++;
4403                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4404                         out->surfaceparms = 0;
4405                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4406                                 out->basematerialflags |= MATERIALFLAG_NODRAW;
4407                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4408                                 out->basematerialflags |= MATERIALFLAG_SKY;
4409                         else
4410                                 out->basematerialflags |= MATERIALFLAG_WALL;
4411                         // these are defaults
4412                         //if (!strncmp(out->name, "textures/skies/", 15))
4413                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4414                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4415                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4416                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4417                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4418                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4419                         if (cls.state != ca_dedicated)
4420                                 if (!Mod_LoadSkinFrame(&out->skinframes[0], out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, true))
4421                                         Con_Printf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4422                 }
4423                 // init the animation variables
4424                 out->currentframe = out;
4425                 out->currentskinframe = &out->skinframes[0];
4426         }
4427         if (c)
4428                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4429 }
4430
4431 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4432 {
4433         q3dplane_t *in;
4434         mplane_t *out;
4435         int i, count;
4436
4437         in = (q3dplane_t *)(mod_base + l->fileofs);
4438         if (l->filelen % sizeof(*in))
4439                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4440         count = l->filelen / sizeof(*in);
4441         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4442
4443         loadmodel->brush.data_planes = out;
4444         loadmodel->brush.num_planes = count;
4445
4446         for (i = 0;i < count;i++, in++, out++)
4447         {
4448                 out->normal[0] = LittleFloat(in->normal[0]);
4449                 out->normal[1] = LittleFloat(in->normal[1]);
4450                 out->normal[2] = LittleFloat(in->normal[2]);
4451                 out->dist = LittleFloat(in->dist);
4452                 PlaneClassify(out);
4453         }
4454 }
4455
4456 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4457 {
4458         q3dbrushside_t *in;
4459         q3mbrushside_t *out;
4460         int i, n, count;
4461
4462         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4463         if (l->filelen % sizeof(*in))
4464                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4465         count = l->filelen / sizeof(*in);
4466         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4467
4468         loadmodel->brush.data_brushsides = out;
4469         loadmodel->brush.num_brushsides = count;
4470
4471         for (i = 0;i < count;i++, in++, out++)
4472         {
4473                 n = LittleLong(in->planeindex);
4474                 if (n < 0 || n >= loadmodel->brush.num_planes)
4475                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4476                 out->plane = loadmodel->brush.data_planes + n;
4477                 n = LittleLong(in->textureindex);
4478                 if (n < 0 || n >= loadmodel->num_textures)
4479                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4480                 out->texture = loadmodel->data_textures + n;
4481         }
4482 }
4483
4484 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4485 {
4486         q3dbrush_t *in;
4487         q3mbrush_t *out;
4488         int i, j, n, c, count, maxplanes;
4489         colplanef_t *planes;
4490
4491         in = (q3dbrush_t *)(mod_base + l->fileofs);
4492         if (l->filelen % sizeof(*in))
4493                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4494         count = l->filelen / sizeof(*in);
4495         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4496
4497         loadmodel->brush.data_brushes = out;
4498         loadmodel->brush.num_brushes = count;
4499
4500         maxplanes = 0;
4501         planes = NULL;
4502
4503         for (i = 0;i < count;i++, in++, out++)
4504         {
4505                 n = LittleLong(in->firstbrushside);
4506                 c = LittleLong(in->numbrushsides);
4507                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4508                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4509                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4510                 out->numbrushsides = c;
4511                 n = LittleLong(in->textureindex);
4512                 if (n < 0 || n >= loadmodel->num_textures)
4513                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4514                 out->texture = loadmodel->data_textures + n;
4515
4516                 // make a list of mplane_t structs to construct a colbrush from
4517                 if (maxplanes < out->numbrushsides)
4518                 {
4519                         maxplanes = out->numbrushsides;
4520                         if (planes)
4521                                 Mem_Free(planes);
4522                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4523                 }
4524                 for (j = 0;j < out->numbrushsides;j++)
4525                 {
4526                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4527                         planes[j].dist = out->firstbrushside[j].plane->dist;
4528                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4529                         planes[j].texture = out->firstbrushside[j].texture;
4530                 }
4531                 // make the colbrush from the planes
4532                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4533         }
4534         if (planes)
4535                 Mem_Free(planes);
4536 }
4537
4538 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4539 {
4540         q3deffect_t *in;
4541         q3deffect_t *out;
4542         int i, n, count;
4543
4544         in = (q3deffect_t *)(mod_base + l->fileofs);
4545         if (l->filelen % sizeof(*in))
4546                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4547         count = l->filelen / sizeof(*in);
4548         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4549
4550         loadmodel->brushq3.data_effects = out;
4551         loadmodel->brushq3.num_effects = count;
4552
4553         for (i = 0;i < count;i++, in++, out++)
4554         {
4555                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4556                 n = LittleLong(in->brushindex);
4557                 if (n >= loadmodel->brush.num_brushes)
4558                 {
4559                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4560                         n = -1;
4561                 }
4562                 out->brushindex = n;
4563                 out->unknown = LittleLong(in->unknown);
4564         }
4565 }
4566
4567 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4568 {
4569         q3dvertex_t *in;
4570         int i, count;
4571
4572         in = (q3dvertex_t *)(mod_base + l->fileofs);
4573         if (l->filelen % sizeof(*in))
4574                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4575         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4576         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4577         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4578         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4579         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4580         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4581
4582         for (i = 0;i < count;i++, in++)
4583         {
4584                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4585                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4586                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4587                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4588                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4589                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4590                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4591                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4592                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4593                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4594                 // svector/tvector are calculated later in face loading
4595                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4596                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4597                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4598                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4599         }
4600 }
4601
4602 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4603 {
4604         int *in;
4605         int *out;
4606         int i, count;
4607
4608         in = (int *)(mod_base + l->fileofs);
4609         if (l->filelen % sizeof(int[3]))
4610                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4611         count = l->filelen / sizeof(*in);
4612         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4613
4614         loadmodel->brushq3.num_triangles = count / 3;
4615         loadmodel->brushq3.data_element3i = out;
4616
4617         for (i = 0;i < count;i++, in++, out++)
4618         {
4619                 *out = LittleLong(*in);
4620                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4621                 {
4622                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4623                         *out = 0;
4624                 }
4625         }
4626 }
4627
4628 static void Mod_Q3BSP_LoadLightmaps(lump_t *l)
4629 {
4630         q3dlightmap_t *in;
4631         rtexture_t **out;
4632         int i, count;
4633         unsigned char *c;
4634
4635         if (!l->filelen)
4636                 return;
4637         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4638         if (l->filelen % sizeof(*in))
4639                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4640         count = l->filelen / sizeof(*in);
4641         out = (rtexture_t **)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4642
4643         loadmodel->brushq3.data_lightmaps = out;
4644         loadmodel->brushq3.num_lightmaps = count;
4645
4646         // deluxemapped q3bsp files have an even number of lightmaps, and surfaces
4647         // always index even numbered ones (0, 2, 4, ...), the odd numbered
4648         // lightmaps are the deluxemaps (light direction textures), so if we
4649         // encounter any odd numbered lightmaps it is not a deluxemapped bsp, it
4650         // is also not a deluxemapped bsp if it has an odd number of lightmaps or
4651         // less than 2
4652         loadmodel->brushq3.deluxemapping = true;
4653         loadmodel->brushq3.deluxemapping_modelspace = true;
4654         if (count < 2 || (count & 1))
4655                 loadmodel->brushq3.deluxemapping = false;
4656
4657         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4658         // reason when only one lightmap is used, which can throw off the
4659         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4660         // to see if the second lightmap is blank, if so it is not deluxemapped.
4661         if (count == 2)
4662         {
4663                 c = in[count - 1].rgb;
4664                 for (i = 0;i < 128*128*3;i++)
4665                         if (c[i])
4666                                 break;
4667                 if (i == 128*128*3)
4668                 {
4669                         // all pixels in the unused lightmap were black...
4670                         loadmodel->brushq3.deluxemapping = false;
4671                 }
4672         }
4673
4674         // further deluxemapping detection is done in Mod_Q3BSP_LoadFaces
4675
4676         for (i = 0;i < count;i++, in++, out++)
4677                 *out = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), 128, 128, in->rgb, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4678 }
4679
4680 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4681 {
4682         q3dface_t *in, *oldin;
4683         msurface_t *out, *oldout;
4684         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4685         //int *originalelement3i;
4686         //int *originalneighbor3i;
4687         float *originalvertex3f;
4688         //float *originalsvector3f;
4689         //float *originaltvector3f;
4690         float *originalnormal3f;
4691         float *originalcolor4f;
4692         float *originaltexcoordtexture2f;
4693         float *originaltexcoordlightmap2f;
4694         float *v;
4695
4696         in = (q3dface_t *)(mod_base + l->fileofs);
4697         if (l->filelen % sizeof(*in))
4698                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4699         count = l->filelen / sizeof(*in);
4700         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4701
4702         loadmodel->data_surfaces = out;
4703         loadmodel->num_surfaces = count;
4704
4705         // 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
4706         if (loadmodel->brushq3.deluxemapping)
4707         {
4708                 for (i = 0;i < count;i++)
4709                 {
4710                         n = LittleLong(in[i].lightmapindex);
4711                         if (n >= 0 && ((n & 1) || n + 1 >= loadmodel->brushq3.num_lightmaps))
4712                         {
4713                                 loadmodel->brushq3.deluxemapping = false;
4714                                 break;
4715                         }
4716                 }
4717         }
4718         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4719
4720         i = 0;
4721         oldi = i;
4722         oldin = in;
4723         oldout = out;
4724         meshvertices = 0;
4725         meshtriangles = 0;
4726         for (;i < count;i++, in++, out++)
4727         {
4728                 // check face type first
4729                 type = LittleLong(in->type);
4730                 if (type != Q3FACETYPE_POLYGON
4731                  && type != Q3FACETYPE_PATCH
4732                  && type != Q3FACETYPE_MESH
4733                  && type != Q3FACETYPE_FLARE)
4734                 {
4735                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4736                         continue;
4737                 }
4738
4739                 n = LittleLong(in->textureindex);
4740                 if (n < 0 || n >= loadmodel->num_textures)
4741                 {
4742                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4743                         continue;
4744                 }
4745                 out->texture = loadmodel->data_textures + n;
4746                 n = LittleLong(in->effectindex);
4747                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4748                 {
4749                         if (developer.integer >= 100)
4750                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4751                         n = -1;
4752                 }
4753                 if (n == -1)
4754                         out->effect = NULL;
4755                 else
4756                         out->effect = loadmodel->brushq3.data_effects + n;
4757                 n = LittleLong(in->lightmapindex);
4758                 if (n >= loadmodel->brushq3.num_lightmaps)
4759                 {
4760                         Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_lightmaps);
4761                         n = -1;
4762                 }
4763                 else if (n < 0)
4764                         n = -1;
4765                 if (n == -1)
4766                 {
4767                         out->lightmaptexture = NULL;
4768                         out->deluxemaptexture = r_texture_blanknormalmap;
4769                 }
4770                 else
4771                 {
4772                         out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n];
4773                         if (loadmodel->brushq3.deluxemapping)
4774                                 out->deluxemaptexture = loadmodel->brushq3.data_lightmaps[n+1];
4775                         else
4776                                 out->deluxemaptexture = r_texture_blanknormalmap;
4777                 }
4778
4779                 firstvertex = LittleLong(in->firstvertex);
4780                 numvertices = LittleLong(in->numvertices);
4781                 firstelement = LittleLong(in->firstelement);
4782                 numtriangles = LittleLong(in->numelements) / 3;
4783                 if (numtriangles * 3 != LittleLong(in->numelements))
4784                 {
4785                         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));
4786                         continue;
4787                 }
4788                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
4789                 {
4790                         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);
4791                         continue;
4792                 }
4793                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
4794                 {
4795                         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);
4796                         continue;
4797                 }
4798                 switch(type)
4799                 {
4800                 case Q3FACETYPE_POLYGON:
4801                 case Q3FACETYPE_MESH:
4802                         // no processing necessary
4803                         break;
4804                 case Q3FACETYPE_PATCH:
4805                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4806                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4807                         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))
4808                         {
4809                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
4810                                 continue;
4811                         }
4812                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4813                         // convert patch to Q3FACETYPE_MESH
4814                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4815                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4816                         // bound to user settings
4817                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4818                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4819                         // bound to sanity settings
4820                         xtess = bound(1, xtess, 1024);
4821                         ytess = bound(1, ytess, 1024);
4822                         // bound to user limit on vertices
4823                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4824                         {
4825                                 if (xtess > ytess)
4826                                         xtess--;
4827                                 else
4828                                         ytess--;
4829                         }
4830                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4831                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4832                         numvertices = finalwidth * finalheight;
4833                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4834                         break;
4835                 case Q3FACETYPE_FLARE:
4836                         if (developer.integer >= 100)
4837                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
4838                         // don't render it
4839                         continue;
4840                 }
4841                 out->num_vertices = numvertices;
4842                 out->num_triangles = numtriangles;
4843                 meshvertices += out->num_vertices;
4844                 meshtriangles += out->num_triangles;
4845         }
4846
4847         i = oldi;
4848         in = oldin;
4849         out = oldout;
4850         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
4851         meshvertices = 0;
4852         meshtriangles = 0;
4853         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
4854         {
4855                 if (out->num_vertices < 3 || out->num_triangles < 1)
4856                         continue;
4857
4858                 type = LittleLong(in->type);
4859                 firstvertex = LittleLong(in->firstvertex);
4860                 firstelement = LittleLong(in->firstelement);
4861                 out->num_firstvertex = meshvertices;
4862                 out->num_firsttriangle = meshtriangles;
4863                 switch(type)
4864                 {
4865                 case Q3FACETYPE_POLYGON:
4866                 case Q3FACETYPE_MESH:
4867                         // no processing necessary
4868                         for (j = 0;j < out->num_vertices;j++)
4869                         {
4870                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
4871                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
4872                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
4873                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
4874                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
4875                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
4876                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
4877                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
4878                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
4879                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
4880                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
4881                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
4882                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
4883                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
4884                         }
4885                         for (j = 0;j < out->num_triangles*3;j++)
4886                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
4887                         break;
4888                 case Q3FACETYPE_PATCH:
4889                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
4890                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
4891                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
4892                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
4893                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
4894                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
4895                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
4896                         // convert patch to Q3FACETYPE_MESH
4897                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4898                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
4899                         // bound to user settings
4900                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
4901                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
4902                         // bound to sanity settings
4903                         xtess = bound(1, xtess, 1024);
4904                         ytess = bound(1, ytess, 1024);
4905                         // bound to user limit on vertices
4906                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
4907                         {
4908                                 if (xtess > ytess)
4909                                         xtess--;
4910                                 else
4911                                         ytess--;
4912                         }
4913                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4914                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4915                         finalvertices = finalwidth * finalheight;
4916                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4917                         type = Q3FACETYPE_MESH;
4918                         // generate geometry
4919                         // (note: normals are skipped because they get recalculated)
4920                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4921                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
4922                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
4923                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
4924                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
4925                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
4926                         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);
4927                         if (developer.integer >= 100)
4928                         {
4929                                 if (out->num_triangles < finaltriangles)
4930                                         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);
4931                                 else
4932                                         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);
4933                         }
4934                         // q3map does not put in collision brushes for curves... ugh
4935                         // build the lower quality collision geometry
4936                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4937                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
4938                         // bound to user settings
4939                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
4940                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
4941                         // bound to sanity settings
4942                         xtess = bound(1, xtess, 1024);
4943                         ytess = bound(1, ytess, 1024);
4944                         // bound to user limit on vertices
4945                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
4946                         {
4947                                 if (xtess > ytess)
4948                                         xtess--;
4949                                 else
4950                                         ytess--;
4951                         }
4952                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
4953                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
4954                         finalvertices = finalwidth * finalheight;
4955                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
4956
4957                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
4958                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
4959                         out->num_collisionvertices = finalvertices;
4960                         out->num_collisiontriangles = finaltriangles;
4961                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
4962                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
4963
4964                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
4965                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
4966
4967                         oldnumtriangles = out->num_triangles;
4968                         oldnumtriangles2 = out->num_collisiontriangles;
4969                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
4970                         if (developer.integer >= 100)
4971                                 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);
4972                         break;
4973                 default:
4974                         break;
4975                 }
4976                 meshvertices += out->num_vertices;
4977                 meshtriangles += out->num_triangles;
4978                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
4979                         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)
4980                                 invalidelements++;
4981                 if (invalidelements)
4982                 {
4983                         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);
4984                         for (j = 0;j < out->num_triangles * 3;j++)
4985                         {
4986                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
4987                                 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)
4988                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
4989                         }
4990                         Con_Print("\n");
4991                 }
4992                 // calculate a bounding box
4993                 VectorClear(out->mins);
4994                 VectorClear(out->maxs);
4995                 if (out->num_vertices)
4996                 {
4997                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
4998                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
4999                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5000                         {
5001                                 out->mins[0] = min(out->mins[0], v[0]);
5002                                 out->maxs[0] = max(out->maxs[0], v[0]);
5003                                 out->mins[1] = min(out->mins[1], v[1]);
5004                                 out->maxs[1] = max(out->maxs[1], v[1]);
5005                                 out->mins[2] = min(out->mins[2], v[2]);
5006                                 out->maxs[2] = max(out->maxs[2], v[2]);
5007                         }
5008                         out->mins[0] -= 1.0f;
5009                         out->mins[1] -= 1.0f;
5010                         out->mins[2] -= 1.0f;
5011                         out->maxs[0] += 1.0f;
5012                         out->maxs[1] += 1.0f;
5013                         out->maxs[2] += 1.0f;
5014                 }
5015                 // set lightmap styles for consistency with q1bsp
5016                 //out->lightmapinfo->styles[0] = 0;
5017                 //out->lightmapinfo->styles[1] = 255;
5018                 //out->lightmapinfo->styles[2] = 255;
5019                 //out->lightmapinfo->styles[3] = 255;
5020         }
5021
5022         // for per pixel lighting
5023         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);
5024
5025         // free the no longer needed vertex data
5026         loadmodel->brushq3.num_vertices = 0;
5027         if (loadmodel->brushq3.data_vertex3f)
5028                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5029         loadmodel->brushq3.data_vertex3f = NULL;
5030         loadmodel->brushq3.data_normal3f = NULL;
5031         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5032         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5033         loadmodel->brushq3.data_color4f = NULL;
5034         // free the no longer needed triangle data
5035         loadmodel->brushq3.num_triangles = 0;
5036         if (loadmodel->brushq3.data_element3i)
5037                 Mem_Free(loadmodel->brushq3.data_element3i);
5038         loadmodel->brushq3.data_element3i = NULL;
5039 }
5040
5041 static void Mod_Q3BSP_LoadModels(lump_t *l)
5042 {
5043         q3dmodel_t *in;
5044         q3dmodel_t *out;
5045         int i, j, n, c, count;
5046
5047         in = (q3dmodel_t *)(mod_base + l->fileofs);
5048         if (l->filelen % sizeof(*in))
5049                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5050         count = l->filelen / sizeof(*in);
5051         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5052
5053         loadmodel->brushq3.data_models = out;
5054         loadmodel->brushq3.num_models = count;
5055
5056         for (i = 0;i < count;i++, in++, out++)
5057         {
5058                 for (j = 0;j < 3;j++)
5059                 {
5060                         out->mins[j] = LittleFloat(in->mins[j]);
5061                         out->maxs[j] = LittleFloat(in->maxs[j]);
5062                 }
5063                 n = LittleLong(in->firstface);
5064                 c = LittleLong(in->numfaces);
5065                 if (n < 0 || n + c > loadmodel->num_surfaces)
5066                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5067                 out->firstface = n;
5068                 out->numfaces = c;
5069                 n = LittleLong(in->firstbrush);
5070                 c = LittleLong(in->numbrushes);
5071                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5072                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5073                 out->firstbrush = n;
5074                 out->numbrushes = c;
5075         }
5076 }
5077
5078 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5079 {
5080         int *in;
5081         int *out;
5082         int i, n, count;
5083
5084         in = (int *)(mod_base + l->fileofs);
5085         if (l->filelen % sizeof(*in))
5086                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5087         count = l->filelen / sizeof(*in);
5088         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5089
5090         loadmodel->brush.data_leafbrushes = out;
5091         loadmodel->brush.num_leafbrushes = count;
5092
5093         for (i = 0;i < count;i++, in++, out++)
5094         {
5095                 n = LittleLong(*in);
5096                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5097                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5098                 *out = n;
5099         }
5100 }
5101
5102 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5103 {
5104         int *in;
5105         int *out;
5106         int i, n, count;
5107
5108         in = (int *)(mod_base + l->fileofs);
5109         if (l->filelen % sizeof(*in))
5110                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5111         count = l->filelen / sizeof(*in);
5112         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5113
5114         loadmodel->brush.data_leafsurfaces = out;
5115         loadmodel->brush.num_leafsurfaces = count;
5116
5117         for (i = 0;i < count;i++, in++, out++)
5118         {
5119                 n = LittleLong(*in);
5120                 if (n < 0 || n >= loadmodel->num_surfaces)
5121                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5122                 *out = n;
5123         }
5124 }
5125
5126 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5127 {
5128         q3dleaf_t *in;
5129         mleaf_t *out;
5130         int i, j, n, c, count;
5131
5132         in = (q3dleaf_t *)(mod_base + l->fileofs);
5133         if (l->filelen % sizeof(*in))
5134                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5135         count = l->filelen / sizeof(*in);
5136         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5137
5138         loadmodel->brush.data_leafs = out;
5139         loadmodel->brush.num_leafs = count;
5140
5141         for (i = 0;i < count;i++, in++, out++)
5142         {
5143                 out->parent = NULL;
5144                 out->plane = NULL;
5145                 out->clusterindex = LittleLong(in->clusterindex);
5146                 out->areaindex = LittleLong(in->areaindex);
5147                 for (j = 0;j < 3;j++)
5148                 {
5149                         // yes the mins/maxs are ints
5150                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5151                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5152                 }
5153                 n = LittleLong(in->firstleafface);
5154                 c = LittleLong(in->numleaffaces);
5155                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5156                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5157                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5158                 out->numleafsurfaces = c;
5159                 n = LittleLong(in->firstleafbrush);
5160                 c = LittleLong(in->numleafbrushes);
5161                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5162                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5163                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5164                 out->numleafbrushes = c;
5165         }
5166 }
5167
5168 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5169 {
5170         q3dnode_t *in;
5171         mnode_t *out;
5172         int i, j, n, count;
5173
5174         in = (q3dnode_t *)(mod_base + l->fileofs);
5175         if (l->filelen % sizeof(*in))
5176                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5177         count = l->filelen / sizeof(*in);
5178         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5179
5180         loadmodel->brush.data_nodes = out;
5181         loadmodel->brush.num_nodes = count;
5182
5183         for (i = 0;i < count;i++, in++, out++)
5184         {
5185                 out->parent = NULL;
5186                 n = LittleLong(in->planeindex);
5187                 if (n < 0 || n >= loadmodel->brush.num_planes)
5188                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5189                 out->plane = loadmodel->brush.data_planes + n;
5190                 for (j = 0;j < 2;j++)
5191                 {
5192                         n = LittleLong(in->childrenindex[j]);
5193                         if (n >= 0)
5194                         {
5195                                 if (n >= loadmodel->brush.num_nodes)
5196                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5197                                 out->children[j] = loadmodel->brush.data_nodes + n;
5198                         }
5199                         else
5200                         {
5201                                 n = -1 - n;
5202                                 if (n >= loadmodel->brush.num_leafs)
5203                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5204                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5205                         }
5206                 }
5207                 for (j = 0;j < 3;j++)
5208                 {
5209                         // yes the mins/maxs are ints
5210                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5211                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5212                 }
5213         }
5214
5215         // set the parent pointers
5216         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5217 }
5218
5219 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5220 {
5221         q3dlightgrid_t *in;
5222         q3dlightgrid_t *out;
5223         int count;
5224
5225         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5226         if (l->filelen % sizeof(*in))
5227                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5228         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5229         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5230         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5231         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5232         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5233         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5234         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5235         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5236         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5237         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5238         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5239         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5240         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5241         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]);
5242         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]);
5243
5244         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5245         if (l->filelen)
5246         {
5247                 if (l->filelen < count * (int)sizeof(*in))
5248                         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]);
5249                 if (l->filelen != count * (int)sizeof(*in))
5250                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5251                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5252                 loadmodel->brushq3.data_lightgrid = out;
5253                 loadmodel->brushq3.num_lightgrid = count;
5254                 // no swapping or validation necessary
5255                 memcpy(out, in, count * (int)sizeof(*out));
5256         }
5257 }
5258
5259 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5260 {
5261         q3dpvs_t *in;
5262         int totalchains;
5263
5264         if (l->filelen == 0)
5265         {
5266                 int i;
5267                 // unvised maps often have cluster indices even without pvs, so check
5268                 // leafs to find real number of clusters
5269                 loadmodel->brush.num_pvsclusters = 1;
5270                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5271                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5272
5273                 // create clusters
5274                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5275                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5276                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5277                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5278                 return;
5279         }
5280
5281         in = (q3dpvs_t *)(mod_base + l->fileofs);
5282         if (l->filelen < 9)
5283                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5284
5285         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5286         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5287         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5288                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5289         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5290         if (l->filelen < totalchains + (int)sizeof(*in))
5291                 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);
5292
5293         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5294         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5295 }
5296
5297 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5298 {
5299         int i, j, k, index[3];
5300         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch, stylescale;
5301         q3dlightgrid_t *a, *s;
5302
5303         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5304         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5305
5306         if (!model->brushq3.num_lightgrid)
5307         {
5308                 ambientcolor[0] = stylescale;
5309                 ambientcolor[1] = stylescale;
5310                 ambientcolor[2] = stylescale;
5311                 return;
5312         }
5313
5314         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5315         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5316         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5317         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5318         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5319         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5320         index[0] = (int)floor(transformed[0]);
5321         index[1] = (int)floor(transformed[1]);
5322         index[2] = (int)floor(transformed[2]);
5323         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5324
5325         // now lerp the values
5326         VectorClear(diffusenormal);
5327         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5328         for (k = 0;k < 2;k++)
5329         {
5330                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5331                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5332                         continue;
5333                 for (j = 0;j < 2;j++)
5334                 {
5335                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5336                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5337                                 continue;
5338                         for (i = 0;i < 2;i++)
5339                         {
5340                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5341                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5342                                         continue;
5343                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5344                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5345                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5346                                 pitch = s->diffusepitch * M_PI / 128;
5347                                 yaw = s->diffuseyaw * M_PI / 128;
5348                                 sinpitch = sin(pitch);
5349                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5350                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5351                                 diffusenormal[2] += blend * (cos(pitch));
5352                                 //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)));
5353                         }
5354                 }
5355         }
5356
5357         // normalize the light direction before turning
5358         VectorNormalize(diffusenormal);
5359         //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]);
5360 }
5361
5362 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5363 {
5364         int i;
5365         mleaf_t *leaf;
5366         colbrushf_t *brush;
5367         // find which leaf the point is in
5368         while (node->plane)
5369                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5370         // point trace the brushes
5371         leaf = (mleaf_t *)node;
5372         for (i = 0;i < leaf->numleafbrushes;i++)
5373         {
5374                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5375                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5376                 {
5377                         brush->markframe = markframe;
5378                         Collision_TracePointBrushFloat(trace, point, brush);
5379                 }
5380         }
5381         // can't do point traces on curves (they have no thickness)
5382 }
5383
5384 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)
5385 {
5386         int i, startside, endside;
5387         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5388         mleaf_t *leaf;
5389         msurface_t *surface;
5390         mplane_t *plane;
5391         colbrushf_t *brush;
5392         // walk the tree until we hit a leaf, recursing for any split cases
5393         while (node->plane)
5394         {
5395                 plane = node->plane;
5396                 // axial planes are much more common than non-axial, so an optimized
5397                 // axial case pays off here
5398                 if (plane->type < 3)
5399                 {
5400                         dist1 = start[plane->type] - plane->dist;
5401                         dist2 = end[plane->type] - plane->dist;
5402                 }
5403                 else
5404                 {
5405                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5406                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5407                 }
5408                 startside = dist1 < 0;
5409                 endside = dist2 < 0;
5410                 if (startside == endside)
5411                 {
5412                         // most of the time the line fragment is on one side of the plane
5413                         node = node->children[startside];
5414                 }
5415                 else
5416                 {
5417                         // line crosses node plane, split the line
5418                         dist1 = PlaneDiff(linestart, plane);
5419                         dist2 = PlaneDiff(lineend, plane);
5420                         midfrac = dist1 / (dist1 - dist2);
5421                         VectorLerp(linestart, midfrac, lineend, mid);
5422                         // take the near side first
5423                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5424                         // if we found an impact on the front side, don't waste time
5425                         // exploring the far side
5426                         if (midfrac <= trace->realfraction)
5427                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5428                         return;
5429                 }
5430         }
5431         // hit a leaf
5432         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5433         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5434         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5435         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5436         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5437         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5438         // line trace the brushes
5439         leaf = (mleaf_t *)node;
5440         for (i = 0;i < leaf->numleafbrushes;i++)
5441         {
5442                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5443                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5444                 {
5445                         brush->markframe = markframe;
5446                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5447                 }
5448         }
5449         // can't do point traces on curves (they have no thickness)
5450         if (mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5451         {
5452                 // line trace the curves
5453                 for (i = 0;i < leaf->numleafsurfaces;i++)
5454                 {
5455                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5456                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5457                         {
5458                                 surface->collisionmarkframe = markframe;
5459                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5460                         }
5461                 }
5462         }
5463 }
5464
5465 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)
5466 {
5467         int i;
5468         int sides;
5469         mleaf_t *leaf;
5470         colbrushf_t *brush;
5471         msurface_t *surface;
5472         mplane_t *plane;
5473         float nodesegmentmins[3], nodesegmentmaxs[3];
5474         // walk the tree until we hit a leaf, recursing for any split cases
5475         while (node->plane)
5476         {
5477                 plane = node->plane;
5478                 // axial planes are much more common than non-axial, so an optimized
5479                 // axial case pays off here
5480                 if (plane->type < 3)
5481                 {
5482                         // this is an axial plane, compare bounding box directly to it and
5483                         // recurse sides accordingly
5484                         // recurse down node sides
5485                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5486                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5487                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5488                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5489                 }
5490                 else
5491                 {
5492                         // this is a non-axial plane, so check if the start and end boxes
5493                         // are both on one side of the plane to handle 'diagonal' cases
5494                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5495                 }
5496                 if (sides == 3)
5497                 {
5498                         // segment crosses plane
5499                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5500                         sides = 2;
5501                 }
5502                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5503                 // in this case we simply pretend the trace hit nothing
5504                 if (sides == 0)
5505                         return; // ERROR: NAN bounding box!
5506                 // take whichever side the segment box is on
5507                 node = node->children[sides - 1];
5508         }
5509         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5510         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5511         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5512         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5513         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5514         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5515         // hit a leaf
5516         leaf = (mleaf_t *)node;
5517         for (i = 0;i < leaf->numleafbrushes;i++)
5518         {
5519                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5520                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5521                 {
5522                         brush->markframe = markframe;
5523                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5524                 }
5525         }
5526         if (mod_q3bsp_curves_collisions.integer)
5527         {
5528                 for (i = 0;i < leaf->numleafsurfaces;i++)
5529                 {
5530                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5531                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5532                         {
5533                                 surface->collisionmarkframe = markframe;
5534                                 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);
5535                         }
5536                 }
5537         }
5538 }
5539
5540 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)
5541 {
5542         int i;
5543         float segmentmins[3], segmentmaxs[3];
5544         static int markframe = 0;
5545         msurface_t *surface;
5546         q3mbrush_t *brush;
5547         memset(trace, 0, sizeof(*trace));
5548         trace->fraction = 1;
5549         trace->realfraction = 1;
5550         trace->hitsupercontentsmask = hitsupercontentsmask;
5551         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5552         {
5553                 if (VectorCompare(start, end))
5554                 {
5555                         // point trace
5556                         if (model->brush.submodel)
5557                         {
5558                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5559                                         if (brush->colbrushf)
5560                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5561                         }
5562                         else
5563                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5564                 }
5565                 else
5566                 {
5567                         // line trace
5568                         segmentmins[0] = min(start[0], end[0]) - 1;
5569                         segmentmins[1] = min(start[1], end[1]) - 1;
5570                         segmentmins[2] = min(start[2], end[2]) - 1;
5571                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5572                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5573                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5574                         if (model->brush.submodel)
5575                         {
5576                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5577                                         if (brush->colbrushf)
5578                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5579                                 if (mod_q3bsp_curves_collisions.integer)
5580                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5581                                                 if (surface->num_collisiontriangles)
5582                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5583                         }
5584                         else
5585                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5586                 }
5587         }
5588         else
5589         {
5590                 // box trace, performed as brush trace
5591                 colbrushf_t *thisbrush_start, *thisbrush_end;
5592                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5593                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5594                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5595                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5596                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5597                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5598                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5599                 VectorAdd(start, boxmins, boxstartmins);
5600                 VectorAdd(start, boxmaxs, boxstartmaxs);
5601                 VectorAdd(end, boxmins, boxendmins);
5602                 VectorAdd(end, boxmaxs, boxendmaxs);
5603                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5604                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5605                 if (model->brush.submodel)
5606                 {
5607                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5608                                 if (brush->colbrushf)
5609                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5610                         if (mod_q3bsp_curves_collisions.integer)
5611                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5612                                         if (surface->num_collisiontriangles)
5613                                                 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);
5614                 }
5615                 else
5616                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5617         }
5618 }
5619
5620 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5621 {
5622         int supercontents = 0;
5623         if (nativecontents & CONTENTSQ3_SOLID)
5624                 supercontents |= SUPERCONTENTS_SOLID;
5625         if (nativecontents & CONTENTSQ3_WATER)
5626                 supercontents |= SUPERCONTENTS_WATER;
5627         if (nativecontents & CONTENTSQ3_SLIME)
5628                 supercontents |= SUPERCONTENTS_SLIME;
5629         if (nativecontents & CONTENTSQ3_LAVA)
5630                 supercontents |= SUPERCONTENTS_LAVA;
5631         if (nativecontents & CONTENTSQ3_BODY)
5632                 supercontents |= SUPERCONTENTS_BODY;
5633         if (nativecontents & CONTENTSQ3_CORPSE)
5634                 supercontents |= SUPERCONTENTS_CORPSE;
5635         if (nativecontents & CONTENTSQ3_NODROP)
5636                 supercontents |= SUPERCONTENTS_NODROP;
5637         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5638                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5639         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5640                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5641         if (nativecontents & CONTENTSQ3_DONOTENTER)
5642                 supercontents |= SUPERCONTENTS_DONOTENTER;
5643         return supercontents;
5644 }
5645
5646 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5647 {
5648         int nativecontents = 0;
5649         if (supercontents & SUPERCONTENTS_SOLID)
5650                 nativecontents |= CONTENTSQ3_SOLID;
5651         if (supercontents & SUPERCONTENTS_WATER)
5652                 nativecontents |= CONTENTSQ3_WATER;
5653         if (supercontents & SUPERCONTENTS_SLIME)
5654                 nativecontents |= CONTENTSQ3_SLIME;
5655         if (supercontents & SUPERCONTENTS_LAVA)
5656                 nativecontents |= CONTENTSQ3_LAVA;
5657         if (supercontents & SUPERCONTENTS_BODY)
5658                 nativecontents |= CONTENTSQ3_BODY;
5659         if (supercontents & SUPERCONTENTS_CORPSE)
5660                 nativecontents |= CONTENTSQ3_CORPSE;
5661         if (supercontents & SUPERCONTENTS_NODROP)
5662                 nativecontents |= CONTENTSQ3_NODROP;
5663         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5664                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5665         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5666                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5667         if (supercontents & SUPERCONTENTS_DONOTENTER)
5668                 nativecontents |= CONTENTSQ3_DONOTENTER;
5669         return nativecontents;
5670 }
5671
5672 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5673 {
5674         int numleafs;
5675         while (node->plane)
5676         {
5677                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5678                 node = node->children[1];
5679         }
5680         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5681         if (loadmodel->brush.num_leafs < numleafs)
5682                 loadmodel->brush.num_leafs = numleafs;
5683 }
5684
5685 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5686 {
5687         int i, j, numshadowmeshtriangles;
5688         q3dheader_t *header;
5689         float corner[3], yawradius, modelradius;
5690         msurface_t *surface;
5691
5692         mod->type = mod_brushq3;
5693         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5694         mod->numskins = 1;
5695
5696         header = (q3dheader_t *)buffer;
5697
5698         i = LittleLong(header->version);
5699         if (i != Q3BSPVERSION)
5700                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5701         mod->brush.ishlbsp = false;
5702         mod->brush.ismcbsp = false;
5703         if (loadmodel->isworldmodel)
5704         {
5705                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5706                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5707         }
5708
5709         mod->soundfromcenter = true;
5710         mod->TraceBox = Mod_Q3BSP_TraceBox;
5711         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5712         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5713         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5714         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5715         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5716         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5717         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5718         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5719         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5720         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5721         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5722         mod->Draw = R_Q1BSP_Draw;
5723         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5724         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5725         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5726         mod->DrawLight = R_Q1BSP_DrawLight;
5727
5728         mod_base = (unsigned char *)header;
5729
5730         // swap all the lumps
5731         header->ident = LittleLong(header->ident);
5732         header->version = LittleLong(header->version);
5733         for (i = 0;i < Q3HEADER_LUMPS;i++)
5734         {
5735                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5736                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5737         }
5738
5739         mod->brush.qw_md4sum = 0;
5740         mod->brush.qw_md4sum2 = 0;
5741         for (i = 0;i < Q3HEADER_LUMPS;i++)
5742         {
5743                 if (i == Q3LUMP_ENTITIES)
5744                         continue;
5745                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5746                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
5747                         continue;
5748                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
5749         }
5750
5751         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
5752         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
5753         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
5754         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
5755         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
5756         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
5757         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
5758         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
5759         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS]);
5760         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
5761         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
5762         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
5763         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
5764         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
5765         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
5766         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
5767         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
5768         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
5769
5770         // the MakePortals code works fine on the q3bsp data as well
5771         Mod_Q1BSP_MakePortals();
5772
5773         // make a single combined shadow mesh to allow optimized shadow volume creation
5774         numshadowmeshtriangles = 0;
5775         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5776         {
5777                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
5778                 numshadowmeshtriangles += surface->num_triangles;
5779         }
5780         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
5781         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
5782                 if (surface->num_triangles > 0)
5783                         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));
5784         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true);
5785         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
5786
5787         loadmodel->brush.num_leafs = 0;
5788         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
5789
5790         if (loadmodel->isworldmodel)
5791         {
5792                 // clear out any stale submodels or worldmodels lying around
5793                 // if we did this clear before now, an error might abort loading and
5794                 // leave things in a bad state
5795                 Mod_RemoveStaleWorldModels(loadmodel);
5796         }
5797
5798         mod = loadmodel;
5799         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
5800         {
5801                 if (i > 0)
5802                 {
5803                         char name[10];
5804                         // LordHavoc: only register submodels if it is the world
5805                         // (prevents external bsp models from replacing world submodels with
5806                         //  their own)
5807                         if (!loadmodel->isworldmodel)
5808                                 continue;
5809                         // duplicate the basic information
5810                         sprintf(name, "*%i", i);
5811                         mod = Mod_FindName(name);
5812                         *mod = *loadmodel;
5813                         strlcpy(mod->name, name, sizeof(mod->name));
5814                         // textures and memory belong to the main model
5815                         mod->texturepool = NULL;
5816                         mod->mempool = NULL;
5817                         mod->brush.GetPVS = NULL;
5818                         mod->brush.FatPVS = NULL;
5819                         mod->brush.BoxTouchingPVS = NULL;
5820                         mod->brush.BoxTouchingLeafPVS = NULL;
5821                         mod->brush.BoxTouchingVisibleLeafs = NULL;
5822                         mod->brush.FindBoxClusters = NULL;
5823                         mod->brush.LightPoint = NULL;
5824                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5825                 }
5826                 mod->brush.submodel = i;
5827
5828                 // make the model surface list (used by shadowing/lighting)
5829                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
5830                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
5831                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
5832                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
5833                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
5834                 for (j = 0;j < mod->nummodelsurfaces;j++)
5835                         mod->surfacelist[j] = mod->firstmodelsurface + j;
5836
5837                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
5838                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
5839                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
5840                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
5841                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
5842                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
5843                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
5844                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
5845                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
5846                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
5847                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
5848                 mod->yawmins[2] = mod->normalmins[2];
5849                 mod->yawmaxs[2] = mod->normalmaxs[2];
5850                 mod->radius = modelradius;
5851                 mod->radius2 = modelradius * modelradius;
5852
5853                 for (j = 0;j < mod->nummodelsurfaces;j++)
5854                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
5855                                 break;
5856                 if (j < mod->nummodelsurfaces)
5857                         mod->DrawSky = R_Q1BSP_DrawSky;
5858         }
5859 }
5860
5861 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
5862 {
5863         int i = LittleLong(((int *)buffer)[1]);
5864         if (i == Q3BSPVERSION)
5865                 Mod_Q3BSP_Load(mod,buffer, bufferend);
5866         else if (i == Q2BSPVERSION)
5867                 Mod_Q2BSP_Load(mod,buffer, bufferend);
5868         else
5869                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
5870 }
5871
5872 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
5873 {
5874         Host_Error("Mod_MAP_Load: not yet implemented");
5875 }
5876