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_picmipworld = {0, "r_picmipworld", "1", "whether gl_picmip shall apply to world textures too"};
  35 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)"};
  36 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)"};
  37 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)"};
  38 cvar_t r_subdivisions_maxtess = {0, "r_subdivisions_maxtess", "1024", "maximum number of subdivisions (prevents curves beyond a certain detail level, limits smoothing)"};
  39 cvar_t r_subdivisions_maxvertices = {0, "r_subdivisions_maxvertices", "65536", "maximum vertices allowed per subdivided curve"};
  40 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)"};
  41 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)"};
  42 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)"};
  43 cvar_t r_subdivisions_collision_maxvertices = {0, "r_subdivisions_collision_maxvertices", "4225", "maximum vertices allowed per subdivided curve"};
  44 cvar_t mod_q3bsp_curves_collisions = {0, "mod_q3bsp_curves_collisions", "1", "enables collisions with curves (SLOW)"};
  45 cvar_t mod_q3bsp_optimizedtraceline = {0, "mod_q3bsp_optimizedtraceline", "1", "whether to use optimized traceline code for line traces (as opposed to tracebox code)"};
  46 cvar_t mod_q3bsp_debugtracebrush = {0, "mod_q3bsp_debugtracebrush", "0", "selects different tracebrush bsp recursion algorithms (for debugging purposes only)"};
  47 cvar_t mod_q3bsp_lightmapmergepower = {CVAR_SAVE, "mod_q3bsp_lightmapmergepower", "4", "merges the quake3 128x128 lightmap textures into larger lightmap group textures to speed up rendering, 1 = 256x256, 2 = 512x512, 3 = 1024x1024, 4 = 2048x2048, 5 = 4096x4096, ..."};
  48
  49 static texture_t mod_q1bsp_texture_solid;
  50 static texture_t mod_q1bsp_texture_sky;
  51 static texture_t mod_q1bsp_texture_lava;
  52 static texture_t mod_q1bsp_texture_slime;
  53 static texture_t mod_q1bsp_texture_water;
  54
  55 void Mod_BrushInit(void)
  56 {
  57 //      Cvar_RegisterVariable(&r_subdivide_size);
  58         Cvar_RegisterVariable(&halflifebsp);
  59         Cvar_RegisterVariable(&mcbsp);
  60         Cvar_RegisterVariable(&r_novis);
  61         Cvar_RegisterVariable(&r_lightmaprgba);
  62         Cvar_RegisterVariable(&r_picmipworld);
  63         Cvar_RegisterVariable(&r_nosurftextures);
  64         Cvar_RegisterVariable(&r_subdivisions_tolerance);
  65         Cvar_RegisterVariable(&r_subdivisions_mintess);
  66         Cvar_RegisterVariable(&r_subdivisions_maxtess);
  67         Cvar_RegisterVariable(&r_subdivisions_maxvertices);
  68         Cvar_RegisterVariable(&r_subdivisions_collision_tolerance);
  69         Cvar_RegisterVariable(&r_subdivisions_collision_mintess);
  70         Cvar_RegisterVariable(&r_subdivisions_collision_maxtess);
  71         Cvar_RegisterVariable(&r_subdivisions_collision_maxvertices);
  72         Cvar_RegisterVariable(&mod_q3bsp_curves_collisions);
  73         Cvar_RegisterVariable(&mod_q3bsp_optimizedtraceline);
  74         Cvar_RegisterVariable(&mod_q3bsp_debugtracebrush);
  75         Cvar_RegisterVariable(&mod_q3bsp_lightmapmergepower);
  76
  77         memset(&mod_q1bsp_texture_solid, 0, sizeof(mod_q1bsp_texture_solid));
  78         strlcpy(mod_q1bsp_texture_solid.name, "solid" , sizeof(mod_q1bsp_texture_solid.name));
  79         mod_q1bsp_texture_solid.surfaceflags = 0;
  80         mod_q1bsp_texture_solid.supercontents = SUPERCONTENTS_SOLID;
  81
  82         mod_q1bsp_texture_sky = mod_q1bsp_texture_solid;
  83         strlcpy(mod_q1bsp_texture_sky.name, "sky", sizeof(mod_q1bsp_texture_sky.name));
  84         mod_q1bsp_texture_sky.surfaceflags = Q3SURFACEFLAG_SKY | Q3SURFACEFLAG_NOIMPACT | Q3SURFACEFLAG_NOMARKS | Q3SURFACEFLAG_NODLIGHT | Q3SURFACEFLAG_NOLIGHTMAP;
  85         mod_q1bsp_texture_sky.supercontents = SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
  86
  87         mod_q1bsp_texture_lava = mod_q1bsp_texture_solid;
  88         strlcpy(mod_q1bsp_texture_lava.name, "*lava", sizeof(mod_q1bsp_texture_lava.name));
  89         mod_q1bsp_texture_lava.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  90         mod_q1bsp_texture_lava.supercontents = SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
  91
  92         mod_q1bsp_texture_slime = mod_q1bsp_texture_solid;
  93         strlcpy(mod_q1bsp_texture_slime.name, "*slime", sizeof(mod_q1bsp_texture_slime.name));
  94         mod_q1bsp_texture_slime.surfaceflags = Q3SURFACEFLAG_NOMARKS;
  95         mod_q1bsp_texture_slime.supercontents = SUPERCONTENTS_SLIME;
  96
  97         mod_q1bsp_texture_water = mod_q1bsp_texture_solid;
  98         strlcpy(mod_q1bsp_texture_water.name, "*water", sizeof(mod_q1bsp_texture_water.name));
  99         mod_q1bsp_texture_water.surfaceflags = Q3SURFACEFLAG_NOMARKS;
 100         mod_q1bsp_texture_water.supercontents = SUPERCONTENTS_WATER;
 101 }
 102
 103 static mleaf_t *Mod_Q1BSP_PointInLeaf(model_t *model, const vec3_t p)
 104 {
 105         mnode_t *node;
 106
 107         if (model == NULL)
 108                 return NULL;
 109
 110         // LordHavoc: modified to start at first clip node,
 111         // in other words: first node of the (sub)model
 112         node = model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode;
 113         while (node->plane)
 114                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
 115
 116         return (mleaf_t *)node;
 117 }
 118
 119 static void Mod_Q1BSP_AmbientSoundLevelsForPoint(model_t *model, const vec3_t p, unsigned char *out, int outsize)
 120 {
 121         int i;
 122         mleaf_t *leaf;
 123         leaf = Mod_Q1BSP_PointInLeaf(model, p);
 124         if (leaf)
 125         {
 126                 i = min(outsize, (int)sizeof(leaf->ambient_sound_level));
 127                 if (i)
 128                 {
 129                         memcpy(out, leaf->ambient_sound_level, i);
 130                         out += i;
 131                         outsize -= i;
 132                 }
 133         }
 134         if (outsize)
 135                 memset(out, 0, outsize);
 136 }
 137
 138 static int Mod_Q1BSP_FindBoxClusters(model_t *model, const vec3_t mins, const vec3_t maxs, int maxclusters, int *clusterlist)
 139 {
 140         int numclusters = 0;
 141         int nodestackindex = 0;
 142         mnode_t *node, *nodestack[1024];
 143         if (!model->brush.num_pvsclusters)
 144                 return -1;
 145         node = model->brush.data_nodes;
 146         for (;;)
 147         {
 148 #if 1
 149                 if (node->plane)
 150                 {
 151                         // node - recurse down the BSP tree
 152                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 153                         if (sides < 3)
 154                         {
 155                                 if (sides == 0)
 156                                         return -1; // ERROR: NAN bounding box!
 157                                 // box is on one side of plane, take that path
 158                                 node = node->children[sides-1];
 159                         }
 160                         else
 161                         {
 162                                 // box crosses plane, take one path and remember the other
 163                                 if (nodestackindex < 1024)
 164                                         nodestack[nodestackindex++] = node->children[0];
 165                                 node = node->children[1];
 166                         }
 167                         continue;
 168                 }
 169                 else
 170                 {
 171                         // leaf - add clusterindex to list
 172                         if (numclusters < maxclusters)
 173                                 clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 174                         numclusters++;
 175                 }
 176 #else
 177                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 178                 {
 179                         if (node->plane)
 180                         {
 181                                 if (nodestackindex < 1024)
 182                                         nodestack[nodestackindex++] = node->children[0];
 183                                 node = node->children[1];
 184                                 continue;
 185                         }
 186                         else
 187                         {
 188                                 // leaf - add clusterindex to list
 189                                 if (numclusters < maxclusters)
 190                                         clusterlist[numclusters] = ((mleaf_t *)node)->clusterindex;
 191                                 numclusters++;
 192                         }
 193                 }
 194 #endif
 195                 // try another path we didn't take earlier
 196                 if (nodestackindex == 0)
 197                         break;
 198                 node = nodestack[--nodestackindex];
 199         }
 200         // return number of clusters found (even if more than the maxclusters)
 201         return numclusters;
 202 }
 203
 204 static int Mod_Q1BSP_BoxTouchingPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 205 {
 206         int nodestackindex = 0;
 207         mnode_t *node, *nodestack[1024];
 208         if (!model->brush.num_pvsclusters)
 209                 return true;
 210         node = model->brush.data_nodes;
 211         for (;;)
 212         {
 213 #if 1
 214                 if (node->plane)
 215                 {
 216                         // node - recurse down the BSP tree
 217                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 218                         if (sides < 3)
 219                         {
 220                                 if (sides == 0)
 221                                         return -1; // ERROR: NAN bounding box!
 222                                 // box is on one side of plane, take that path
 223                                 node = node->children[sides-1];
 224                         }
 225                         else
 226                         {
 227                                 // box crosses plane, take one path and remember the other
 228                                 if (nodestackindex < 1024)
 229                                         nodestack[nodestackindex++] = node->children[0];
 230                                 node = node->children[1];
 231                         }
 232                         continue;
 233                 }
 234                 else
 235                 {
 236                         // leaf - check cluster bit
 237                         int clusterindex = ((mleaf_t *)node)->clusterindex;
 238                         if (CHECKPVSBIT(pvs, clusterindex))
 239                         {
 240                                 // it is visible, return immediately with the news
 241                                 return true;
 242                         }
 243                 }
 244 #else
 245                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 246                 {
 247                         if (node->plane)
 248                         {
 249                                 if (nodestackindex < 1024)
 250                                         nodestack[nodestackindex++] = node->children[0];
 251                                 node = node->children[1];
 252                                 continue;
 253                         }
 254                         else
 255                         {
 256                                 // leaf - check cluster bit
 257                                 int clusterindex = ((mleaf_t *)node)->clusterindex;
 258                                 if (CHECKPVSBIT(pvs, clusterindex))
 259                                 {
 260                                         // it is visible, return immediately with the news
 261                                         return true;
 262                                 }
 263                         }
 264                 }
 265 #endif
 266                 // nothing to see here, try another path we didn't take earlier
 267                 if (nodestackindex == 0)
 268                         break;
 269                 node = nodestack[--nodestackindex];
 270         }
 271         // it is not visible
 272         return false;
 273 }
 274
 275 static int Mod_Q1BSP_BoxTouchingLeafPVS(model_t *model, const unsigned char *pvs, const vec3_t mins, const vec3_t maxs)
 276 {
 277         int nodestackindex = 0;
 278         mnode_t *node, *nodestack[1024];
 279         if (!model->brush.num_leafs)
 280                 return true;
 281         node = model->brush.data_nodes;
 282         for (;;)
 283         {
 284 #if 1
 285                 if (node->plane)
 286                 {
 287                         // node - recurse down the BSP tree
 288                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 289                         if (sides < 3)
 290                         {
 291                                 if (sides == 0)
 292                                         return -1; // ERROR: NAN bounding box!
 293                                 // box is on one side of plane, take that path
 294                                 node = node->children[sides-1];
 295                         }
 296                         else
 297                         {
 298                                 // box crosses plane, take one path and remember the other
 299                                 if (nodestackindex < 1024)
 300                                         nodestack[nodestackindex++] = node->children[0];
 301                                 node = node->children[1];
 302                         }
 303                         continue;
 304                 }
 305                 else
 306                 {
 307                         // leaf - check cluster bit
 308                         int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 309                         if (CHECKPVSBIT(pvs, clusterindex))
 310                         {
 311                                 // it is visible, return immediately with the news
 312                                 return true;
 313                         }
 314                 }
 315 #else
 316                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 317                 {
 318                         if (node->plane)
 319                         {
 320                                 if (nodestackindex < 1024)
 321                                         nodestack[nodestackindex++] = node->children[0];
 322                                 node = node->children[1];
 323                                 continue;
 324                         }
 325                         else
 326                         {
 327                                 // leaf - check cluster bit
 328                                 int clusterindex = ((mleaf_t *)node) - model->brush.data_leafs;
 329                                 if (CHECKPVSBIT(pvs, clusterindex))
 330                                 {
 331                                         // it is visible, return immediately with the news
 332                                         return true;
 333                                 }
 334                         }
 335                 }
 336 #endif
 337                 // nothing to see here, try another path we didn't take earlier
 338                 if (nodestackindex == 0)
 339                         break;
 340                 node = nodestack[--nodestackindex];
 341         }
 342         // it is not visible
 343         return false;
 344 }
 345
 346 static int Mod_Q1BSP_BoxTouchingVisibleLeafs(model_t *model, const unsigned char *visibleleafs, const vec3_t mins, const vec3_t maxs)
 347 {
 348         int nodestackindex = 0;
 349         mnode_t *node, *nodestack[1024];
 350         if (!model->brush.num_leafs)
 351                 return true;
 352         node = model->brush.data_nodes;
 353         for (;;)
 354         {
 355 #if 1
 356                 if (node->plane)
 357                 {
 358                         // node - recurse down the BSP tree
 359                         int sides = BoxOnPlaneSide(mins, maxs, node->plane);
 360                         if (sides < 3)
 361                         {
 362                                 if (sides == 0)
 363                                         return -1; // ERROR: NAN bounding box!
 364                                 // box is on one side of plane, take that path
 365                                 node = node->children[sides-1];
 366                         }
 367                         else
 368                         {
 369                                 // box crosses plane, take one path and remember the other
 370                                 if (nodestackindex < 1024)
 371                                         nodestack[nodestackindex++] = node->children[0];
 372                                 node = node->children[1];
 373                         }
 374                         continue;
 375                 }
 376                 else
 377                 {
 378                         // leaf - check if it is visible
 379                         if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 380                         {
 381                                 // it is visible, return immediately with the news
 382                                 return true;
 383                         }
 384                 }
 385 #else
 386                 if (BoxesOverlap(mins, maxs, node->mins, node->maxs))
 387                 {
 388                         if (node->plane)
 389                         {
 390                                 if (nodestackindex < 1024)
 391                                         nodestack[nodestackindex++] = node->children[0];
 392                                 node = node->children[1];
 393                                 continue;
 394                         }
 395                         else
 396                         {
 397                                 // leaf - check if it is visible
 398                                 if (visibleleafs[(mleaf_t *)node - model->brush.data_leafs])
 399                                 {
 400                                         // it is visible, return immediately with the news
 401                                         return true;
 402                                 }
 403                         }
 404                 }
 405 #endif
 406                 // nothing to see here, try another path we didn't take earlier
 407                 if (nodestackindex == 0)
 408                         break;
 409                 node = nodestack[--nodestackindex];
 410         }
 411         // it is not visible
 412         return false;
 413 }
 414
 415 typedef struct findnonsolidlocationinfo_s
 416 {
 417         vec3_t center;
 418         vec_t radius;
 419         vec3_t nudge;
 420         vec_t bestdist;
 421         model_t *model;
 422 }
 423 findnonsolidlocationinfo_t;
 424
 425 static void Mod_Q1BSP_FindNonSolidLocation_r_Leaf(findnonsolidlocationinfo_t *info, mleaf_t *leaf)
 426 {
 427         int i, surfacenum, k, *tri, *mark;
 428         float dist, f, vert[3][3], edge[3][3], facenormal[3], edgenormal[3][3], point[3];
 429         msurface_t *surface;
 430         for (surfacenum = 0, mark = leaf->firstleafsurface;surfacenum < leaf->numleafsurfaces;surfacenum++, mark++)
 431         {
 432                 surface = info->model->data_surfaces + *mark;
 433                 if (surface->texture->supercontents & SUPERCONTENTS_SOLID)
 434                 {
 435                         for (k = 0;k < surface->num_triangles;k++)
 436                         {
 437                                 tri = (info->model->surfmesh.data_element3i + 3 * surface->num_firsttriangle) + k * 3;
 438                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[0] * 3), vert[0]);
 439                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[1] * 3), vert[1]);
 440                                 VectorCopy((info->model->surfmesh.data_vertex3f + tri[2] * 3), vert[2]);
 441                                 VectorSubtract(vert[1], vert[0], edge[0]);
 442                                 VectorSubtract(vert[2], vert[1], edge[1]);
 443                                 CrossProduct(edge[1], edge[0], facenormal);
 444                                 if (facenormal[0] || facenormal[1] || facenormal[2])
 445                                 {
 446                                         VectorNormalize(facenormal);
 447                                         f = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 448                                         if (f <= info->bestdist && f >= -info->bestdist)
 449                                         {
 450                                                 VectorSubtract(vert[0], vert[2], edge[2]);
 451                                                 VectorNormalize(edge[0]);
 452                                                 VectorNormalize(edge[1]);
 453                                                 VectorNormalize(edge[2]);
 454                                                 CrossProduct(facenormal, edge[0], edgenormal[0]);
 455                                                 CrossProduct(facenormal, edge[1], edgenormal[1]);
 456                                                 CrossProduct(facenormal, edge[2], edgenormal[2]);
 457                                                 // face distance
 458                                                 if (DotProduct(info->center, edgenormal[0]) < DotProduct(vert[0], edgenormal[0])
 459                                                  && DotProduct(info->center, edgenormal[1]) < DotProduct(vert[1], edgenormal[1])
 460                                                  && DotProduct(info->center, edgenormal[2]) < DotProduct(vert[2], edgenormal[2]))
 461                                                 {
 462                                                         // we got lucky, the center is within the face
 463                                                         dist = DotProduct(info->center, facenormal) - DotProduct(vert[0], facenormal);
 464                                                         if (dist < 0)
 465                                                         {
 466                                                                 dist = -dist;
 467                                                                 if (info->bestdist > dist)
 468                                                                 {
 469                                                                         info->bestdist = dist;
 470                                                                         VectorScale(facenormal, (info->radius - -dist), info->nudge);
 471                                                                 }
 472                                                         }
 473                                                         else
 474                                                         {
 475                                                                 if (info->bestdist > dist)
 476                                                                 {
 477                                                                         info->bestdist = dist;
 478                                                                         VectorScale(facenormal, (info->radius - dist), info->nudge);
 479                                                                 }
 480                                                         }
 481                                                 }
 482                                                 else
 483                                                 {
 484                                                         // check which edge or vertex the center is nearest
 485                                                         for (i = 0;i < 3;i++)
 486                                                         {
 487                                                                 f = DotProduct(info->center, edge[i]);
 488                                                                 if (f >= DotProduct(vert[0], edge[i])
 489                                                                  && f <= DotProduct(vert[1], edge[i]))
 490                                                                 {
 491                                                                         // on edge
 492                                                                         VectorMA(info->center, -f, edge[i], point);
 493                                                                         dist = sqrt(DotProduct(point, point));
 494                                                                         if (info->bestdist > dist)
 495                                                                         {
 496                                                                                 info->bestdist = dist;
 497                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 498                                                                         }
 499                                                                         // skip both vertex checks
 500                                                                         // (both are further away than this edge)
 501                                                                         i++;
 502                                                                 }
 503                                                                 else
 504                                                                 {
 505                                                                         // not on edge, check first vertex of edge
 506                                                                         VectorSubtract(info->center, vert[i], point);
 507                                                                         dist = sqrt(DotProduct(point, point));
 508                                                                         if (info->bestdist > dist)
 509                                                                         {
 510                                                                                 info->bestdist = dist;
 511                                                                                 VectorScale(point, (info->radius / dist), info->nudge);
 512                                                                         }
 513                                                                 }
 514                                                         }
 515                                                 }
 516                                         }
 517                                 }
 518                         }
 519                 }
 520         }
 521 }
 522
 523 static void Mod_Q1BSP_FindNonSolidLocation_r(findnonsolidlocationinfo_t *info, mnode_t *node)
 524 {
 525         if (node->plane)
 526         {
 527                 float f = PlaneDiff(info->center, node->plane);
 528                 if (f >= -info->bestdist)
 529                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[0]);
 530                 if (f <= info->bestdist)
 531                         Mod_Q1BSP_FindNonSolidLocation_r(info, node->children[1]);
 532         }
 533         else
 534         {
 535                 if (((mleaf_t *)node)->numleafsurfaces)
 536                         Mod_Q1BSP_FindNonSolidLocation_r_Leaf(info, (mleaf_t *)node);
 537         }
 538 }
 539
 540 static void Mod_Q1BSP_FindNonSolidLocation(model_t *model, const vec3_t in, vec3_t out, float radius)
 541 {
 542         int i;
 543         findnonsolidlocationinfo_t info;
 544         if (model == NULL)
 545         {
 546                 VectorCopy(in, out);
 547                 return;
 548         }
 549         VectorCopy(in, info.center);
 550         info.radius = radius;
 551         info.model = model;
 552         i = 0;
 553         do
 554         {
 555                 VectorClear(info.nudge);
 556                 info.bestdist = radius;
 557                 Mod_Q1BSP_FindNonSolidLocation_r(&info, model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode);
 558                 VectorAdd(info.center, info.nudge, info.center);
 559         }
 560         while (info.bestdist < radius && ++i < 10);
 561         VectorCopy(info.center, out);
 562 }
 563
 564 int Mod_Q1BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
 565 {
 566         switch(nativecontents)
 567         {
 568                 case CONTENTS_EMPTY:
 569                         return 0;
 570                 case CONTENTS_SOLID:
 571                         return SUPERCONTENTS_SOLID;
 572                 case CONTENTS_WATER:
 573                         return SUPERCONTENTS_WATER;
 574                 case CONTENTS_SLIME:
 575                         return SUPERCONTENTS_SLIME;
 576                 case CONTENTS_LAVA:
 577                         return SUPERCONTENTS_LAVA | SUPERCONTENTS_NODROP;
 578                 case CONTENTS_SKY:
 579                         return SUPERCONTENTS_SKY | SUPERCONTENTS_NODROP;
 580         }
 581         return 0;
 582 }
 583
 584 int Mod_Q1BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
 585 {
 586         if (supercontents & (SUPERCONTENTS_SOLID | SUPERCONTENTS_BODY))
 587                 return CONTENTS_SOLID;
 588         if (supercontents & SUPERCONTENTS_SKY)
 589                 return CONTENTS_SKY;
 590         if (supercontents & SUPERCONTENTS_LAVA)
 591                 return CONTENTS_LAVA;
 592         if (supercontents & SUPERCONTENTS_SLIME)
 593                 return CONTENTS_SLIME;
 594         if (supercontents & SUPERCONTENTS_WATER)
 595                 return CONTENTS_WATER;
 596         return CONTENTS_EMPTY;
 597 }
 598
 599 typedef struct RecursiveHullCheckTraceInfo_s
 600 {
 601         // the hull we're tracing through
 602         const hull_t *hull;
 603
 604         // the trace structure to fill in
 605         trace_t *trace;
 606
 607         // start, end, and end - start (in model space)
 608         double start[3];
 609         double end[3];
 610         double dist[3];
 611 }
 612 RecursiveHullCheckTraceInfo_t;
 613
 614 // 1/32 epsilon to keep floating point happy
 615 #define DIST_EPSILON (0.03125)
 616
 617 #define HULLCHECKSTATE_EMPTY 0
 618 #define HULLCHECKSTATE_SOLID 1
 619 #define HULLCHECKSTATE_DONE 2
 620
 621 extern cvar_t collision_prefernudgedfraction;
 622 static int Mod_Q1BSP_RecursiveHullCheck(RecursiveHullCheckTraceInfo_t *t, int num, double p1f, double p2f, double p1[3], double p2[3])
 623 {
 624         // status variables, these don't need to be saved on the stack when
 625         // recursing...  but are because this should be thread-safe
 626         // (note: tracing against a bbox is not thread-safe, yet)
 627         int ret;
 628         mplane_t *plane;
 629         double t1, t2;
 630
 631         // variables that need to be stored on the stack when recursing
 632         dclipnode_t *node;
 633         int side;
 634         double midf, mid[3];
 635
 636         // LordHavoc: a goto!  everyone flee in terror... :)
 637 loc0:
 638         // check for empty
 639         if (num < 0)
 640         {
 641                 num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 642                 if (!t->trace->startfound)
 643                 {
 644                         t->trace->startfound = true;
 645                         t->trace->startsupercontents |= num;
 646                 }
 647                 if (num & SUPERCONTENTS_LIQUIDSMASK)
 648                         t->trace->inwater = true;
 649                 if (num == 0)
 650                         t->trace->inopen = true;
 651                 if (num & SUPERCONTENTS_SOLID)
 652                         t->trace->hittexture = &mod_q1bsp_texture_solid;
 653                 else if (num & SUPERCONTENTS_SKY)
 654                         t->trace->hittexture = &mod_q1bsp_texture_sky;
 655                 else if (num & SUPERCONTENTS_LAVA)
 656                         t->trace->hittexture = &mod_q1bsp_texture_lava;
 657                 else if (num & SUPERCONTENTS_SLIME)
 658                         t->trace->hittexture = &mod_q1bsp_texture_slime;
 659                 else
 660                         t->trace->hittexture = &mod_q1bsp_texture_water;
 661                 t->trace->hitq3surfaceflags = t->trace->hittexture->surfaceflags;
 662                 t->trace->hitsupercontents = num;
 663                 if (num & t->trace->hitsupercontentsmask)
 664                 {
 665                         // if the first leaf is solid, set startsolid
 666                         if (t->trace->allsolid)
 667                                 t->trace->startsolid = true;
 668 #if COLLISIONPARANOID >= 3
 669                         Con_Print("S");
 670 #endif
 671                         return HULLCHECKSTATE_SOLID;
 672                 }
 673                 else
 674                 {
 675                         t->trace->allsolid = false;
 676 #if COLLISIONPARANOID >= 3
 677                         Con_Print("E");
 678 #endif
 679                         return HULLCHECKSTATE_EMPTY;
 680                 }
 681         }
 682
 683         // find the point distances
 684         node = t->hull->clipnodes + num;
 685
 686         plane = t->hull->planes + node->planenum;
 687         if (plane->type < 3)
 688         {
 689                 t1 = p1[plane->type] - plane->dist;
 690                 t2 = p2[plane->type] - plane->dist;
 691         }
 692         else
 693         {
 694                 t1 = DotProduct (plane->normal, p1) - plane->dist;
 695                 t2 = DotProduct (plane->normal, p2) - plane->dist;
 696         }
 697
 698         if (t1 < 0)
 699         {
 700                 if (t2 < 0)
 701                 {
 702 #if COLLISIONPARANOID >= 3
 703                         Con_Print("<");
 704 #endif
 705                         num = node->children[1];
 706                         goto loc0;
 707                 }
 708                 side = 1;
 709         }
 710         else
 711         {
 712                 if (t2 >= 0)
 713                 {
 714 #if COLLISIONPARANOID >= 3
 715                         Con_Print(">");
 716 #endif
 717                         num = node->children[0];
 718                         goto loc0;
 719                 }
 720                 side = 0;
 721         }
 722
 723         // the line intersects, find intersection point
 724         // LordHavoc: this uses the original trace for maximum accuracy
 725 #if COLLISIONPARANOID >= 3
 726         Con_Print("M");
 727 #endif
 728         if (plane->type < 3)
 729         {
 730                 t1 = t->start[plane->type] - plane->dist;
 731                 t2 = t->end[plane->type] - plane->dist;
 732         }
 733         else
 734         {
 735                 t1 = DotProduct (plane->normal, t->start) - plane->dist;
 736                 t2 = DotProduct (plane->normal, t->end) - plane->dist;
 737         }
 738
 739         midf = t1 / (t1 - t2);
 740         midf = bound(p1f, midf, p2f);
 741         VectorMA(t->start, midf, t->dist, mid);
 742
 743         // recurse both sides, front side first
 744         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side], p1f, midf, p1, mid);
 745         // if this side is not empty, return what it is (solid or done)
 746         if (ret != HULLCHECKSTATE_EMPTY)
 747                 return ret;
 748
 749         ret = Mod_Q1BSP_RecursiveHullCheck(t, node->children[side ^ 1], midf, p2f, mid, p2);
 750         // if other side is not solid, return what it is (empty or done)
 751         if (ret != HULLCHECKSTATE_SOLID)
 752                 return ret;
 753
 754         // front is air and back is solid, this is the impact point...
 755         if (side)
 756         {
 757                 t->trace->plane.dist = -plane->dist;
 758                 VectorNegate (plane->normal, t->trace->plane.normal);
 759         }
 760         else
 761         {
 762                 t->trace->plane.dist = plane->dist;
 763                 VectorCopy (plane->normal, t->trace->plane.normal);
 764         }
 765
 766         // calculate the true fraction
 767         t1 = DotProduct(t->trace->plane.normal, t->start) - t->trace->plane.dist;
 768         t2 = DotProduct(t->trace->plane.normal, t->end) - t->trace->plane.dist;
 769         midf = t1 / (t1 - t2);
 770         t->trace->realfraction = bound(0, midf, 1);
 771
 772         // calculate the return fraction which is nudged off the surface a bit
 773         midf = (t1 - DIST_EPSILON) / (t1 - t2);
 774         t->trace->fraction = bound(0, midf, 1);
 775
 776         if (collision_prefernudgedfraction.integer)
 777                 t->trace->realfraction = t->trace->fraction;
 778
 779 #if COLLISIONPARANOID >= 3
 780         Con_Print("D");
 781 #endif
 782         return HULLCHECKSTATE_DONE;
 783 }
 784
 785 //#if COLLISIONPARANOID < 2
 786 static int Mod_Q1BSP_RecursiveHullCheckPoint(RecursiveHullCheckTraceInfo_t *t, int num)
 787 {
 788         while (num >= 0)
 789                 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];
 790         num = Mod_Q1BSP_SuperContentsFromNativeContents(NULL, num);
 791         t->trace->startsupercontents |= num;
 792         if (num & SUPERCONTENTS_LIQUIDSMASK)
 793                 t->trace->inwater = true;
 794         if (num == 0)
 795                 t->trace->inopen = true;
 796         if (num & t->trace->hitsupercontentsmask)
 797         {
 798                 t->trace->allsolid = t->trace->startsolid = true;
 799                 return HULLCHECKSTATE_SOLID;
 800         }
 801         else
 802         {
 803                 t->trace->allsolid = t->trace->startsolid = false;
 804                 return HULLCHECKSTATE_EMPTY;
 805         }
 806 }
 807 //#endif
 808
 809 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)
 810 {
 811         // this function currently only supports same size start and end
 812         double boxsize[3];
 813         RecursiveHullCheckTraceInfo_t rhc;
 814
 815         memset(&rhc, 0, sizeof(rhc));
 816         memset(trace, 0, sizeof(trace_t));
 817         rhc.trace = trace;
 818         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 819         rhc.trace->fraction = 1;
 820         rhc.trace->realfraction = 1;
 821         rhc.trace->allsolid = true;
 822         VectorSubtract(boxmaxs, boxmins, boxsize);
 823         if (boxsize[0] < 3)
 824                 rhc.hull = &model->brushq1.hulls[0]; // 0x0x0
 825         else if (model->brush.ismcbsp)
 826         {
 827                 if (boxsize[2] < 48) // pick the nearest of 40 or 56
 828                         rhc.hull = &model->brushq1.hulls[2]; // 16x16x40
 829                 else
 830                         rhc.hull = &model->brushq1.hulls[1]; // 16x16x56
 831         }
 832         else if (model->brush.ishlbsp)
 833         {
 834                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 835                 // minor float precision errors from the box being transformed around
 836                 if (boxsize[0] < 32.1)
 837                 {
 838                         if (boxsize[2] < 54) // pick the nearest of 36 or 72
 839                                 rhc.hull = &model->brushq1.hulls[3]; // 32x32x36
 840                         else
 841                                 rhc.hull = &model->brushq1.hulls[1]; // 32x32x72
 842                 }
 843                 else
 844                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x64
 845         }
 846         else
 847         {
 848                 // LordHavoc: this has to have a minor tolerance (the .1) because of
 849                 // minor float precision errors from the box being transformed around
 850                 if (boxsize[0] < 32.1)
 851                         rhc.hull = &model->brushq1.hulls[1]; // 32x32x56
 852                 else
 853                         rhc.hull = &model->brushq1.hulls[2]; // 64x64x88
 854         }
 855         VectorMAMAM(1, start, 1, boxmins, -1, rhc.hull->clip_mins, rhc.start);
 856         VectorMAMAM(1, end, 1, boxmins, -1, rhc.hull->clip_mins, rhc.end);
 857         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 858 #if COLLISIONPARANOID >= 2
 859         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]);
 860         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 861         {
 862
 863                 double test[3];
 864                 trace_t testtrace;
 865                 VectorLerp(rhc.start, rhc.trace->fraction, rhc.end, test);
 866                 memset(&testtrace, 0, sizeof(trace_t));
 867                 rhc.trace = &testtrace;
 868                 rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 869                 rhc.trace->fraction = 1;
 870                 rhc.trace->realfraction = 1;
 871                 rhc.trace->allsolid = true;
 872                 VectorCopy(test, rhc.start);
 873                 VectorCopy(test, rhc.end);
 874                 VectorClear(rhc.dist);
 875                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 876                 //Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, test, test);
 877                 if (!trace->startsolid && testtrace.startsolid)
 878                         Con_Printf(" - ended in solid!\n");
 879         }
 880         Con_Print("\n");
 881 #else
 882         if (VectorLength2(rhc.dist))
 883                 Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 884         else
 885                 Mod_Q1BSP_RecursiveHullCheckPoint(&rhc, rhc.hull->firstclipnode);
 886 #endif
 887 }
 888
 889 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)
 890 {
 891 #if 1
 892         colbrushf_t cbox;
 893         colplanef_t cbox_planes[6];
 894         cbox.supercontents = boxsupercontents;
 895         cbox.numplanes = 6;
 896         cbox.numpoints = 0;
 897         cbox.numtriangles = 0;
 898         cbox.planes = cbox_planes;
 899         cbox.points = NULL;
 900         cbox.elements = NULL;
 901         cbox.markframe = 0;
 902         cbox.mins[0] = 0;
 903         cbox.mins[1] = 0;
 904         cbox.mins[2] = 0;
 905         cbox.maxs[0] = 0;
 906         cbox.maxs[1] = 0;
 907         cbox.maxs[2] = 0;
 908         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];
 909         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];
 910         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];
 911         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];
 912         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];
 913         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];
 914         cbox_planes[0].q3surfaceflags = boxq3surfaceflags;cbox_planes[0].texture = boxtexture;
 915         cbox_planes[1].q3surfaceflags = boxq3surfaceflags;cbox_planes[1].texture = boxtexture;
 916         cbox_planes[2].q3surfaceflags = boxq3surfaceflags;cbox_planes[2].texture = boxtexture;
 917         cbox_planes[3].q3surfaceflags = boxq3surfaceflags;cbox_planes[3].texture = boxtexture;
 918         cbox_planes[4].q3surfaceflags = boxq3surfaceflags;cbox_planes[4].texture = boxtexture;
 919         cbox_planes[5].q3surfaceflags = boxq3surfaceflags;cbox_planes[5].texture = boxtexture;
 920         memset(trace, 0, sizeof(trace_t));
 921         trace->hitsupercontentsmask = hitsupercontentsmask;
 922         trace->fraction = 1;
 923         trace->realfraction = 1;
 924         Collision_TraceLineBrushFloat(trace, start, end, &cbox, &cbox);
 925 #else
 926         RecursiveHullCheckTraceInfo_t rhc;
 927         static hull_t box_hull;
 928         static dclipnode_t box_clipnodes[6];
 929         static mplane_t box_planes[6];
 930         // fill in a default trace
 931         memset(&rhc, 0, sizeof(rhc));
 932         memset(trace, 0, sizeof(trace_t));
 933         //To keep everything totally uniform, bounding boxes are turned into small
 934         //BSP trees instead of being compared directly.
 935         // create a temp hull from bounding box sizes
 936         box_planes[0].dist = cmaxs[0] - mins[0];
 937         box_planes[1].dist = cmins[0] - maxs[0];
 938         box_planes[2].dist = cmaxs[1] - mins[1];
 939         box_planes[3].dist = cmins[1] - maxs[1];
 940         box_planes[4].dist = cmaxs[2] - mins[2];
 941         box_planes[5].dist = cmins[2] - maxs[2];
 942 #if COLLISIONPARANOID >= 3
 943         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]);
 944 #endif
 945
 946         if (box_hull.clipnodes == NULL)
 947         {
 948                 int i, side;
 949
 950                 //Set up the planes and clipnodes so that the six floats of a bounding box
 951                 //can just be stored out and get a proper hull_t structure.
 952
 953                 box_hull.clipnodes = box_clipnodes;
 954                 box_hull.planes = box_planes;
 955                 box_hull.firstclipnode = 0;
 956                 box_hull.lastclipnode = 5;
 957
 958                 for (i = 0;i < 6;i++)
 959                 {
 960                         box_clipnodes[i].planenum = i;
 961
 962                         side = i&1;
 963
 964                         box_clipnodes[i].children[side] = CONTENTS_EMPTY;
 965                         if (i != 5)
 966                                 box_clipnodes[i].children[side^1] = i + 1;
 967                         else
 968                                 box_clipnodes[i].children[side^1] = CONTENTS_SOLID;
 969
 970                         box_planes[i].type = i>>1;
 971                         box_planes[i].normal[i>>1] = 1;
 972                 }
 973         }
 974
 975         // trace a line through the generated clipping hull
 976         //rhc.boxsupercontents = boxsupercontents;
 977         rhc.hull = &box_hull;
 978         rhc.trace = trace;
 979         rhc.trace->hitsupercontentsmask = hitsupercontentsmask;
 980         rhc.trace->fraction = 1;
 981         rhc.trace->realfraction = 1;
 982         rhc.trace->allsolid = true;
 983         VectorCopy(start, rhc.start);
 984         VectorCopy(end, rhc.end);
 985         VectorSubtract(rhc.end, rhc.start, rhc.dist);
 986         Mod_Q1BSP_RecursiveHullCheck(&rhc, rhc.hull->firstclipnode, 0, 1, rhc.start, rhc.end);
 987         //VectorMA(rhc.start, rhc.trace->fraction, rhc.dist, rhc.trace->endpos);
 988         if (rhc.trace->startsupercontents)
 989                 rhc.trace->startsupercontents = boxsupercontents;
 990 #endif
 991 }
 992
 993 static int Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(mnode_t *node, double p1[3], double p2[3])
 994 {
 995         double t1, t2;
 996         double midf, mid[3];
 997         int ret, side;
 998
 999         // check for empty
1000         while (node->plane)
1001         {
1002                 // find the point distances
1003                 mplane_t *plane = node->plane;
1004                 if (plane->type < 3)
1005                 {
1006                         t1 = p1[plane->type] - plane->dist;
1007                         t2 = p2[plane->type] - plane->dist;
1008                 }
1009                 else
1010                 {
1011                         t1 = DotProduct (plane->normal, p1) - plane->dist;
1012                         t2 = DotProduct (plane->normal, p2) - plane->dist;
1013                 }
1014
1015                 if (t1 < 0)
1016                 {
1017                         if (t2 < 0)
1018                         {
1019                                 node = node->children[1];
1020                                 continue;
1021                         }
1022                         side = 1;
1023                 }
1024                 else
1025                 {
1026                         if (t2 >= 0)
1027                         {
1028                                 node = node->children[0];
1029                                 continue;
1030                         }
1031                         side = 0;
1032                 }
1033
1034                 midf = t1 / (t1 - t2);
1035                 VectorLerp(p1, midf, p2, mid);
1036
1037                 // recurse both sides, front side first
1038                 // return 2 if empty is followed by solid (hit something)
1039                 // do not return 2 if both are solid or both empty,
1040                 // or if start is solid and end is empty
1041                 // as these degenerate cases usually indicate the eye is in solid and
1042                 // should see the target point anyway
1043                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side    ], p1, mid);
1044                 if (ret != 0)
1045                         return ret;
1046                 ret = Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(node->children[side ^ 1], mid, p2);
1047                 if (ret != 1)
1048                         return ret;
1049                 return 2;
1050         }
1051         return ((mleaf_t *)node)->clusterindex < 0;
1052 }
1053
1054 static qboolean Mod_Q1BSP_TraceLineOfSight(struct model_s *model, const vec3_t start, const vec3_t end)
1055 {
1056         // this function currently only supports same size start and end
1057         double tracestart[3], traceend[3];
1058         VectorCopy(start, tracestart);
1059         VectorCopy(end, traceend);
1060         return Mod_Q1BSP_TraceLineOfSight_RecursiveNodeCheck(model->brush.data_nodes, tracestart, traceend) != 2;
1061 }
1062
1063 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)
1064 {
1065         int side;
1066         float front, back;
1067         float mid, distz = endz - startz;
1068
1069 loc0:
1070         if (!node->plane)
1071                 return false;           // didn't hit anything
1072
1073         switch (node->plane->type)
1074         {
1075         case PLANE_X:
1076                 node = node->children[x < node->plane->dist];
1077                 goto loc0;
1078         case PLANE_Y:
1079                 node = node->children[y < node->plane->dist];
1080                 goto loc0;
1081         case PLANE_Z:
1082                 side = startz < node->plane->dist;
1083                 if ((endz < node->plane->dist) == side)
1084                 {
1085                         node = node->children[side];
1086                         goto loc0;
1087                 }
1088                 // found an intersection
1089                 mid = node->plane->dist;
1090                 break;
1091         default:
1092                 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
1093                 front += startz * node->plane->normal[2];
1094                 back += endz * node->plane->normal[2];
1095                 side = front < node->plane->dist;
1096                 if ((back < node->plane->dist) == side)
1097                 {
1098                         node = node->children[side];
1099                         goto loc0;
1100                 }
1101                 // found an intersection
1102                 mid = startz + distz * (front - node->plane->dist) / (front - back);
1103                 break;
1104         }
1105
1106         // go down front side
1107         if (node->children[side]->plane && Mod_Q1BSP_LightPoint_RecursiveBSPNode(model, ambientcolor, diffusecolor, diffusenormal, node->children[side], x, y, startz, mid))
1108                 return true;    // hit something
1109         else
1110         {
1111                 // check for impact on this node
1112                 if (node->numsurfaces)
1113                 {
1114                         int i, ds, dt;
1115                         msurface_t *surface;
1116
1117                         surface = model->data_surfaces + node->firstsurface;
1118                         for (i = 0;i < node->numsurfaces;i++, surface++)
1119                         {
1120                                 if (!(surface->texture->basematerialflags & MATERIALFLAG_WALL) || !surface->lightmapinfo->samples)
1121                                         continue;       // no lightmaps
1122
1123                                 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];
1124                                 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];
1125
1126                                 if (ds >= 0 && ds < surface->lightmapinfo->extents[0] && dt >= 0 && dt < surface->lightmapinfo->extents[1])
1127                                 {
1128                                         unsigned char *lightmap;
1129                                         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;
1130                                         lmwidth = ((surface->lightmapinfo->extents[0]>>4)+1);
1131                                         lmheight = ((surface->lightmapinfo->extents[1]>>4)+1);
1132                                         line3 = lmwidth * 3; // LordHavoc: *3 for colored lighting
1133                                         size3 = lmwidth * lmheight * 3; // LordHavoc: *3 for colored lighting
1134
1135                                         lightmap = surface->lightmapinfo->samples + ((dt>>4) * lmwidth + (ds>>4))*3; // LordHavoc: *3 for colored lighting
1136
1137                                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++)
1138                                         {
1139                                                 scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]];
1140                                                 r00 += lightmap[      0] * scale;g00 += lightmap[      1] * scale;b00 += lightmap[      2] * scale;
1141                                                 r01 += lightmap[      3] * scale;g01 += lightmap[      4] * scale;b01 += lightmap[      5] * scale;
1142                                                 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
1143                                                 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
1144                                                 lightmap += size3;
1145                                         }
1146
1147 /*
1148 LordHavoc: here's the readable version of the interpolation
1149 code, not quite as easy for the compiler to optimize...
1150
1151 dsfrac is the X position in the lightmap pixel, * 16
1152 dtfrac is the Y position in the lightmap pixel, * 16
1153 r00 is top left corner, r01 is top right corner
1154 r10 is bottom left corner, r11 is bottom right corner
1155 g and b are the same layout.
1156 r0 and r1 are the top and bottom intermediate results
1157
1158 first we interpolate the top two points, to get the top
1159 edge sample
1160
1161         r0 = (((r01-r00) * dsfrac) >> 4) + r00;
1162         g0 = (((g01-g00) * dsfrac) >> 4) + g00;
1163         b0 = (((b01-b00) * dsfrac) >> 4) + b00;
1164
1165 then we interpolate the bottom two points, to get the
1166 bottom edge sample
1167
1168         r1 = (((r11-r10) * dsfrac) >> 4) + r10;
1169         g1 = (((g11-g10) * dsfrac) >> 4) + g10;
1170         b1 = (((b11-b10) * dsfrac) >> 4) + b10;
1171
1172 then we interpolate the top and bottom samples to get the
1173 middle sample (the one which was requested)
1174
1175         r = (((r1-r0) * dtfrac) >> 4) + r0;
1176         g = (((g1-g0) * dtfrac) >> 4) + g0;
1177         b = (((b1-b0) * dtfrac) >> 4) + b0;
1178 */
1179
1180                                         ambientcolor[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
1181                                         ambientcolor[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
1182                                         ambientcolor[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
1183                                         return true; // success
1184                                 }
1185                         }
1186                 }
1187
1188                 // go down back side
1189                 node = node->children[side ^ 1];
1190                 startz = mid;
1191                 distz = endz - startz;
1192                 goto loc0;
1193         }
1194 }
1195
1196 void Mod_Q1BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
1197 {
1198         // pretend lighting is coming down from above (due to lack of a lightgrid to know primary lighting direction)
1199         VectorSet(diffusenormal, 0, 0, 1);
1200
1201         if (!model->brushq1.lightdata)
1202         {
1203                 VectorSet(ambientcolor, 1, 1, 1);
1204                 VectorSet(diffusecolor, 0, 0, 0);
1205                 return;
1206         }
1207
1208         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);
1209 }
1210
1211 static void Mod_Q1BSP_DecompressVis(const unsigned char *in, const unsigned char *inend, unsigned char *out, unsigned char *outend)
1212 {
1213         int c;
1214         unsigned char *outstart = out;
1215         while (out < outend)
1216         {
1217                 if (in == inend)
1218                 {
1219                         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));
1220                         return;
1221                 }
1222                 c = *in++;
1223                 if (c)
1224                         *out++ = c;
1225                 else
1226                 {
1227                         if (in == inend)
1228                         {
1229                                 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));
1230                                 return;
1231                         }
1232                         for (c = *in++;c > 0;c--)
1233                         {
1234                                 if (out == outend)
1235                                 {
1236                                         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));
1237                                         return;
1238                                 }
1239                                 *out++ = 0;
1240                         }
1241                 }
1242         }
1243 }
1244
1245 /*
1246 =============
1247 R_Q1BSP_LoadSplitSky
1248
1249 A sky texture is 256*128, with the right side being a masked overlay
1250 ==============
1251 */
1252 void R_Q1BSP_LoadSplitSky (unsigned char *src, int width, int height, int bytesperpixel)
1253 {
1254         int i, j;
1255         unsigned solidpixels[128*128], alphapixels[128*128];
1256
1257         // allocate a texture pool if we need it
1258         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
1259                 loadmodel->texturepool = R_AllocTexturePool();
1260
1261         // if sky isn't the right size, just use it as a solid layer
1262         if (width != 256 || height != 128)
1263         {
1264                 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);
1265                 loadmodel->brush.alphaskytexture = NULL;
1266                 return;
1267         }
1268
1269         if (bytesperpixel == 4)
1270         {
1271                 for (i = 0;i < 128;i++)
1272                 {
1273                         for (j = 0;j < 128;j++)
1274                         {
1275                                 solidpixels[(i*128) + j] = ((unsigned *)src)[i*256+j+128];
1276                                 alphapixels[(i*128) + j] = ((unsigned *)src)[i*256+j];
1277                         }
1278                 }
1279         }
1280         else
1281         {
1282                 // make an average value for the back to avoid
1283                 // a fringe on the top level
1284                 int p, r, g, b;
1285                 union
1286                 {
1287                         unsigned int i;
1288                         unsigned char b[4];
1289                 }
1290                 rgba;
1291                 r = g = b = 0;
1292                 for (i = 0;i < 128;i++)
1293                 {
1294                         for (j = 0;j < 128;j++)
1295                         {
1296                                 rgba.i = palette_complete[src[i*256 + j + 128]];
1297                                 r += rgba.b[0];
1298                                 g += rgba.b[1];
1299                                 b += rgba.b[2];
1300                         }
1301                 }
1302                 rgba.b[0] = r/(128*128);
1303                 rgba.b[1] = g/(128*128);
1304                 rgba.b[2] = b/(128*128);
1305                 rgba.b[3] = 0;
1306                 for (i = 0;i < 128;i++)
1307                 {
1308                         for (j = 0;j < 128;j++)
1309                         {
1310                                 solidpixels[(i*128) + j] = palette_complete[src[i*256 + j + 128]];
1311                                 alphapixels[(i*128) + j] = (p = src[i*256 + j]) ? palette_complete[p] : rgba.i;
1312                         }
1313                 }
1314         }
1315
1316         loadmodel->brush.solidskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_solidtexture", 128, 128, (unsigned char *) solidpixels, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
1317         loadmodel->brush.alphaskytexture = R_LoadTexture2D(loadmodel->texturepool, "sky_alphatexture", 128, 128, (unsigned char *) alphapixels, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
1318 }
1319
1320 static void Mod_Q1BSP_LoadTextures(lump_t *l)
1321 {
1322         int i, j, k, num, max, altmax, mtwidth, mtheight, *dofs, incomplete;
1323         skinframe_t *skinframe;
1324         miptex_t *dmiptex;
1325         texture_t *tx, *tx2, *anims[10], *altanims[10];
1326         dmiptexlump_t *m;
1327         unsigned char *data, *mtdata;
1328         const char *s;
1329         char mapname[MAX_QPATH], name[MAX_QPATH];
1330
1331         loadmodel->data_textures = NULL;
1332
1333         // add two slots for notexture walls and notexture liquids
1334         if (l->filelen)
1335         {
1336                 m = (dmiptexlump_t *)(mod_base + l->fileofs);
1337                 m->nummiptex = LittleLong (m->nummiptex);
1338                 loadmodel->num_textures = m->nummiptex + 2;
1339                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1340         }
1341         else
1342         {
1343                 m = NULL;
1344                 loadmodel->num_textures = 2;
1345                 loadmodel->num_texturesperskin = loadmodel->num_textures;
1346         }
1347
1348         loadmodel->data_textures = (texture_t *)Mem_Alloc(loadmodel->mempool, loadmodel->num_textures * sizeof(texture_t));
1349
1350         // fill out all slots with notexture
1351         if (cls.state != ca_dedicated)
1352                 skinframe = R_SkinFrame_LoadMissing();
1353         else
1354                 skinframe = NULL;
1355         for (i = 0, tx = loadmodel->data_textures;i < loadmodel->num_textures;i++, tx++)
1356         {
1357                 strlcpy(tx->name, "NO TEXTURE FOUND", sizeof(tx->name));
1358                 tx->width = 16;
1359                 tx->height = 16;
1360                 if (cls.state != ca_dedicated)
1361                 {
1362                         tx->numskinframes = 1;
1363                         tx->skinframerate = 1;
1364                         tx->skinframes[0] = skinframe;
1365                         tx->currentskinframe = tx->skinframes[0];
1366                         tx->basematerialflags = 0;
1367                 }
1368                 if (i == loadmodel->num_textures - 1)
1369                 {
1370                         tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1371                         tx->supercontents = mod_q1bsp_texture_water.supercontents;
1372                         tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1373                 }
1374                 else
1375                 {
1376                         tx->basematerialflags |= MATERIALFLAG_WALL;
1377                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1378                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1379                 }
1380                 tx->currentframe = tx;
1381         }
1382
1383         if (!m)
1384                 return;
1385
1386         s = loadmodel->name;
1387         if (!strncasecmp(s, "maps/", 5))
1388                 s += 5;
1389         FS_StripExtension(s, mapname, sizeof(mapname));
1390
1391         // just to work around bounds checking when debugging with it (array index out of bounds error thing)
1392         dofs = m->dataofs;
1393         // LordHavoc: mostly rewritten map texture loader
1394         for (i = 0;i < m->nummiptex;i++)
1395         {
1396                 dofs[i] = LittleLong(dofs[i]);
1397                 if (dofs[i] == -1 || r_nosurftextures.integer)
1398                         continue;
1399                 dmiptex = (miptex_t *)((unsigned char *)m + dofs[i]);
1400
1401                 // make sure name is no more than 15 characters
1402                 for (j = 0;dmiptex->name[j] && j < 15;j++)
1403                         name[j] = dmiptex->name[j];
1404                 name[j] = 0;
1405
1406                 mtwidth = LittleLong(dmiptex->width);
1407                 mtheight = LittleLong(dmiptex->height);
1408                 mtdata = NULL;
1409                 j = LittleLong(dmiptex->offsets[0]);
1410                 if (j)
1411                 {
1412                         // texture included
1413                         if (j < 40 || j + mtwidth * mtheight > l->filelen)
1414                         {
1415                                 Con_Printf("Texture \"%s\" in \"%s\"is corrupt or incomplete\n", dmiptex->name, loadmodel->name);
1416                                 continue;
1417                         }
1418                         mtdata = (unsigned char *)dmiptex + j;
1419                 }
1420
1421                 if ((mtwidth & 15) || (mtheight & 15))
1422                         Con_Printf("warning: texture \"%s\" in \"%s\" is not 16 aligned\n", dmiptex->name, loadmodel->name);
1423
1424                 // LordHavoc: force all names to lowercase
1425                 for (j = 0;name[j];j++)
1426                         if (name[j] >= 'A' && name[j] <= 'Z')
1427                                 name[j] += 'a' - 'A';
1428
1429                 tx = loadmodel->data_textures + i;
1430                 strlcpy(tx->name, name, sizeof(tx->name));
1431                 tx->width = mtwidth;
1432                 tx->height = mtheight;
1433
1434                 if (!tx->name[0])
1435                 {
1436                         sprintf(tx->name, "unnamed%i", i);
1437                         Con_Printf("warning: unnamed texture in %s, renaming to %s\n", loadmodel->name, tx->name);
1438                 }
1439
1440                 if (tx->name[0] == '*')
1441                 {
1442                         if (!strncmp(tx->name, "*lava", 5))
1443                         {
1444                                 tx->supercontents = mod_q1bsp_texture_lava.supercontents;
1445                                 tx->surfaceflags = mod_q1bsp_texture_lava.surfaceflags;
1446                         }
1447                         else if (!strncmp(tx->name, "*slime", 6))
1448                         {
1449                                 tx->supercontents = mod_q1bsp_texture_slime.supercontents;
1450                                 tx->surfaceflags = mod_q1bsp_texture_slime.surfaceflags;
1451                         }
1452                         else
1453                         {
1454                                 tx->supercontents = mod_q1bsp_texture_water.supercontents;
1455                                 tx->surfaceflags = mod_q1bsp_texture_water.surfaceflags;
1456                         }
1457                 }
1458                 else if (!strncmp(tx->name, "sky", 3))
1459                 {
1460                         tx->supercontents = mod_q1bsp_texture_sky.supercontents;
1461                         tx->surfaceflags = mod_q1bsp_texture_sky.surfaceflags;
1462                 }
1463                 else
1464                 {
1465                         tx->supercontents = mod_q1bsp_texture_solid.supercontents;
1466                         tx->surfaceflags = mod_q1bsp_texture_solid.surfaceflags;
1467                 }
1468
1469                 if (cls.state != ca_dedicated)
1470                 {
1471                         // LordHavoc: HL sky textures are entirely different than quake
1472                         if (!loadmodel->brush.ishlbsp && !strncmp(tx->name, "sky", 3) && mtwidth == 256 && mtheight == 128)
1473                         {
1474                                 if (loadmodel->isworldmodel)
1475                                 {
1476                                         data = loadimagepixels(tx->name, false, 0, 0);
1477                                         if (data)
1478                                         {
1479                                                 R_Q1BSP_LoadSplitSky(data, image_width, image_height, 4);
1480                                                 Mem_Free(data);
1481                                         }
1482                                         else if (mtdata != NULL)
1483                                                 R_Q1BSP_LoadSplitSky(mtdata, mtwidth, mtheight, 1);
1484                                 }
1485                         }
1486                         else
1487                         {
1488                                 skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s/%s", mapname, tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false);
1489                                 if (!skinframe)
1490                                         skinframe = R_SkinFrame_LoadExternal(gamemode == GAME_TENEBRAE ? tx->name : va("textures/%s", tx->name), TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false);
1491                                 if (!skinframe)
1492                                 {
1493                                         // did not find external texture, load it from the bsp or wad3
1494                                         if (loadmodel->brush.ishlbsp)
1495                                         {
1496                                                 // internal texture overrides wad
1497                                                 unsigned char *pixels, *freepixels;
1498                                                 pixels = freepixels = NULL;
1499                                                 if (mtdata)
1500                                                         pixels = W_ConvertWAD3Texture(dmiptex);
1501                                                 if (pixels == NULL)
1502                                                         pixels = freepixels = W_GetTexture(tx->name);
1503                                                 if (pixels != NULL)
1504                                                 {
1505                                                         tx->width = image_width;
1506                                                         tx->height = image_height;
1507                                                         skinframe = R_SkinFrame_LoadInternal(tx->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, false, pixels, image_width, image_height, 32, NULL, NULL);
1508                                                 }
1509                                                 if (freepixels)
1510                                                         Mem_Free(freepixels);
1511                                         }
1512                                         else if (mtdata) // texture included
1513                                                 skinframe = R_SkinFrame_LoadInternal(tx->name, TEXF_MIPMAP | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false, r_fullbrights.integer, mtdata, tx->width, tx->height, 8, NULL, NULL);
1514                                 }
1515                                 // if skinframe is still NULL the "missing" texture will be used
1516                                 if (skinframe)
1517                                         tx->skinframes[0] = skinframe;
1518                         }
1519
1520                         tx->basematerialflags = 0;
1521                         if (tx->name[0] == '*')
1522                         {
1523                                 // LordHavoc: some turbulent textures should not be affected by wateralpha
1524                                 if (strncmp(tx->name,"*lava",5)
1525                                  && strncmp(tx->name,"*teleport",9)
1526                                  && strncmp(tx->name,"*rift",5)) // Scourge of Armagon texture
1527                                         tx->basematerialflags |= MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
1528                                 tx->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_NOSHADOW;
1529                         }
1530                         else if (!strncmp(tx->name, "sky", 3))
1531                                 tx->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
1532                         else
1533                                 tx->basematerialflags |= MATERIALFLAG_WALL;
1534                         if (tx->skinframes[0] && tx->skinframes[0]->fog)
1535                                 tx->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
1536
1537                         // start out with no animation
1538                         tx->currentframe = tx;
1539                         tx->currentskinframe = tx->skinframes[0];
1540                 }
1541         }
1542
1543         // sequence the animations
1544         for (i = 0;i < m->nummiptex;i++)
1545         {
1546                 tx = loadmodel->data_textures + i;
1547                 if (!tx || tx->name[0] != '+' || tx->name[1] == 0 || tx->name[2] == 0)
1548                         continue;
1549                 if (tx->anim_total[0] || tx->anim_total[1])
1550                         continue;       // already sequenced
1551
1552                 // find the number of frames in the animation
1553                 memset(anims, 0, sizeof(anims));
1554                 memset(altanims, 0, sizeof(altanims));
1555
1556                 for (j = i;j < m->nummiptex;j++)
1557                 {
1558                         tx2 = loadmodel->data_textures + j;
1559                         if (!tx2 || tx2->name[0] != '+' || strcmp(tx2->name+2, tx->name+2))
1560                                 continue;
1561
1562                         num = tx2->name[1];
1563                         if (num >= '0' && num <= '9')
1564                                 anims[num - '0'] = tx2;
1565                         else if (num >= 'a' && num <= 'j')
1566                                 altanims[num - 'a'] = tx2;
1567                         else
1568                                 Con_Printf("Bad animating texture %s\n", tx->name);
1569                 }
1570
1571                 max = altmax = 0;
1572                 for (j = 0;j < 10;j++)
1573                 {
1574                         if (anims[j])
1575                                 max = j + 1;
1576                         if (altanims[j])
1577                                 altmax = j + 1;
1578                 }
1579                 //Con_Printf("linking animation %s (%i:%i frames)\n\n", tx->name, max, altmax);
1580
1581                 incomplete = false;
1582                 for (j = 0;j < max;j++)
1583                 {
1584                         if (!anims[j])
1585                         {
1586                                 Con_Printf("Missing frame %i of %s\n", j, tx->name);
1587                                 incomplete = true;
1588                         }
1589                 }
1590                 for (j = 0;j < altmax;j++)
1591                 {
1592                         if (!altanims[j])
1593                         {
1594                                 Con_Printf("Missing altframe %i of %s\n", j, tx->name);
1595                                 incomplete = true;
1596                         }
1597                 }
1598                 if (incomplete)
1599                         continue;
1600
1601                 if (altmax < 1)
1602                 {
1603                         // if there is no alternate animation, duplicate the primary
1604                         // animation into the alternate
1605                         altmax = max;
1606                         for (k = 0;k < 10;k++)
1607                                 altanims[k] = anims[k];
1608                 }
1609
1610                 // link together the primary animation
1611                 for (j = 0;j < max;j++)
1612                 {
1613                         tx2 = anims[j];
1614                         tx2->animated = true;
1615                         tx2->anim_total[0] = max;
1616                         tx2->anim_total[1] = altmax;
1617                         for (k = 0;k < 10;k++)
1618                         {
1619                                 tx2->anim_frames[0][k] = anims[k];
1620                                 tx2->anim_frames[1][k] = altanims[k];
1621                         }
1622                 }
1623
1624                 // if there really is an alternate anim...
1625                 if (anims[0] != altanims[0])
1626                 {
1627                         // link together the alternate animation
1628                         for (j = 0;j < altmax;j++)
1629                         {
1630                                 tx2 = altanims[j];
1631                                 tx2->animated = true;
1632                                 // the primary/alternate are reversed here
1633                                 tx2->anim_total[0] = altmax;
1634                                 tx2->anim_total[1] = max;
1635                                 for (k = 0;k < 10;k++)
1636                                 {
1637                                         tx2->anim_frames[0][k] = altanims[k];
1638                                         tx2->anim_frames[1][k] = anims[k];
1639                                 }
1640                         }
1641                 }
1642         }
1643 }
1644
1645 static void Mod_Q1BSP_LoadLighting(lump_t *l)
1646 {
1647         int i;
1648         unsigned char *in, *out, *data, d;
1649         char litfilename[MAX_QPATH];
1650         char dlitfilename[MAX_QPATH];
1651         fs_offset_t filesize;
1652         if (loadmodel->brush.ishlbsp) // LordHavoc: load the colored lighting data straight
1653         {
1654                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1655                 for (i=0; i<l->filelen; i++)
1656                         loadmodel->brushq1.lightdata[i] = mod_base[l->fileofs+i] >>= 1;
1657         }
1658         else if (loadmodel->brush.ismcbsp)
1659         {
1660                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1661                 memcpy(loadmodel->brushq1.lightdata, mod_base + l->fileofs, l->filelen);
1662         }
1663         else // LordHavoc: bsp version 29 (normal white lighting)
1664         {
1665                 // LordHavoc: hope is not lost yet, check for a .lit file to load
1666                 strlcpy (litfilename, loadmodel->name, sizeof (litfilename));
1667                 FS_StripExtension (litfilename, litfilename, sizeof (litfilename));
1668                 strlcpy (dlitfilename, litfilename, sizeof (dlitfilename));
1669                 strlcat (litfilename, ".lit", sizeof (litfilename));
1670                 strlcat (dlitfilename, ".dlit", sizeof (dlitfilename));
1671                 data = (unsigned char*) FS_LoadFile(litfilename, tempmempool, false, &filesize);
1672                 if (data)
1673                 {
1674                         if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1675                         {
1676                                 i = LittleLong(((int *)data)[1]);
1677                                 if (i == 1)
1678                                 {
1679                                         Con_DPrintf("loaded %s\n", litfilename);
1680                                         loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1681                                         memcpy(loadmodel->brushq1.lightdata, data + 8, filesize - 8);
1682                                         Mem_Free(data);
1683                                         data = (unsigned char*) FS_LoadFile(dlitfilename, tempmempool, false, &filesize);
1684                                         if (data)
1685                                         {
1686                                                 if (filesize == (fs_offset_t)(8 + l->filelen * 3) && data[0] == 'Q' && data[1] == 'L' && data[2] == 'I' && data[3] == 'T')
1687                                                 {
1688                                                         i = LittleLong(((int *)data)[1]);
1689                                                         if (i == 1)
1690                                                         {
1691                                                                 Con_DPrintf("loaded %s\n", dlitfilename);
1692                                                                 loadmodel->brushq1.nmaplightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, filesize - 8);
1693                                                                 memcpy(loadmodel->brushq1.nmaplightdata, data + 8, filesize - 8);
1694                                                                 loadmodel->brushq3.deluxemapping_modelspace = false;
1695                                                                 loadmodel->brushq3.deluxemapping = true;
1696                                                         }
1697                                                 }
1698                                                 Mem_Free(data);
1699                                                 data = NULL;
1700                                         }
1701                                         return;
1702                                 }
1703                                 else
1704                                         Con_Printf("Unknown .lit file version (%d)\n", i);
1705                         }
1706                         else if (filesize == 8)
1707                                 Con_Print("Empty .lit file, ignoring\n");
1708                         else
1709                                 Con_Printf("Corrupt .lit file (file size %i bytes, should be %i bytes), ignoring\n", (int) filesize, (int) (8 + l->filelen * 3));
1710                         if (data)
1711                         {
1712                                 Mem_Free(data);
1713                                 data = NULL;
1714                         }
1715                 }
1716                 // LordHavoc: oh well, expand the white lighting data
1717                 if (!l->filelen)
1718                         return;
1719                 loadmodel->brushq1.lightdata = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen*3);
1720                 in = mod_base + l->fileofs;
1721                 out = loadmodel->brushq1.lightdata;
1722                 for (i = 0;i < l->filelen;i++)
1723                 {
1724                         d = *in++;
1725                         *out++ = d;
1726                         *out++ = d;
1727                         *out++ = d;
1728                 }
1729         }
1730 }
1731
1732 static void Mod_Q1BSP_LoadVisibility(lump_t *l)
1733 {
1734         loadmodel->brushq1.num_compressedpvs = 0;
1735         loadmodel->brushq1.data_compressedpvs = NULL;
1736         if (!l->filelen)
1737                 return;
1738         loadmodel->brushq1.num_compressedpvs = l->filelen;
1739         loadmodel->brushq1.data_compressedpvs = (unsigned char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1740         memcpy(loadmodel->brushq1.data_compressedpvs, mod_base + l->fileofs, l->filelen);
1741 }
1742
1743 // used only for HalfLife maps
1744 static void Mod_Q1BSP_ParseWadsFromEntityLump(const char *data)
1745 {
1746         char key[128], value[4096];
1747         char wadname[128];
1748         int i, j, k;
1749         if (!data)
1750                 return;
1751         if (!COM_ParseTokenConsole(&data))
1752                 return; // error
1753         if (com_token[0] != '{')
1754                 return; // error
1755         while (1)
1756         {
1757                 if (!COM_ParseTokenConsole(&data))
1758                         return; // error
1759                 if (com_token[0] == '}')
1760                         break; // end of worldspawn
1761                 if (com_token[0] == '_')
1762                         strlcpy(key, com_token + 1, sizeof(key));
1763                 else
1764                         strlcpy(key, com_token, sizeof(key));
1765                 while (key[strlen(key)-1] == ' ') // remove trailing spaces
1766                         key[strlen(key)-1] = 0;
1767                 if (!COM_ParseTokenConsole(&data))
1768                         return; // error
1769                 dpsnprintf(value, sizeof(value), "%s", com_token);
1770                 if (!strcmp("wad", key)) // for HalfLife maps
1771                 {
1772                         if (loadmodel->brush.ishlbsp)
1773                         {
1774                                 j = 0;
1775                                 for (i = 0;i < (int)sizeof(value);i++)
1776                                         if (value[i] != ';' && value[i] != '\\' && value[i] != '/' && value[i] != ':')
1777                                                 break;
1778                                 if (value[i])
1779                                 {
1780                                         for (;i < (int)sizeof(value);i++)
1781                                         {
1782                                                 // ignore path - the \\ check is for HalfLife... stupid windoze 'programmers'...
1783                                                 if (value[i] == '\\' || value[i] == '/' || value[i] == ':')
1784                                                         j = i+1;
1785                                                 else if (value[i] == ';' || value[i] == 0)
1786                                                 {
1787                                                         k = value[i];
1788                                                         value[i] = 0;
1789                                                         strlcpy(wadname, "textures/", sizeof(wadname));
1790                                                         strlcat(wadname, &value[j], sizeof(wadname));
1791                                                         W_LoadTextureWadFile(wadname, false);
1792                                                         j = i+1;
1793                                                         if (!k)
1794                                                                 break;
1795                                                 }
1796                                         }
1797                                 }
1798                         }
1799                 }
1800         }
1801 }
1802
1803 static void Mod_Q1BSP_LoadEntities(lump_t *l)
1804 {
1805         loadmodel->brush.entities = NULL;
1806         if (!l->filelen)
1807                 return;
1808         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
1809         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
1810         if (loadmodel->brush.ishlbsp)
1811                 Mod_Q1BSP_ParseWadsFromEntityLump(loadmodel->brush.entities);
1812 }
1813
1814
1815 static void Mod_Q1BSP_LoadVertexes(lump_t *l)
1816 {
1817         dvertex_t       *in;
1818         mvertex_t       *out;
1819         int                     i, count;
1820
1821         in = (dvertex_t *)(mod_base + l->fileofs);
1822         if (l->filelen % sizeof(*in))
1823                 Host_Error("Mod_Q1BSP_LoadVertexes: funny lump size in %s",loadmodel->name);
1824         count = l->filelen / sizeof(*in);
1825         out = (mvertex_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
1826
1827         loadmodel->brushq1.vertexes = out;
1828         loadmodel->brushq1.numvertexes = count;
1829
1830         for ( i=0 ; i<count ; i++, in++, out++)
1831         {
1832                 out->position[0] = LittleFloat(in->point[0]);
1833                 out->position[1] = LittleFloat(in->point[1]);
1834                 out->position[2] = LittleFloat(in->point[2]);
1835         }
1836 }
1837
1838 // The following two functions should be removed and MSG_* or SZ_* function sets adjusted so they
1839 // can be used for this
1840 // REMOVEME
1841 int SB_ReadInt (unsigned char **buffer)
1842 {
1843         int     i;
1844         i = ((*buffer)[0]) + 256*((*buffer)[1]) + 65536*((*buffer)[2]) + 16777216*((*buffer)[3]);
1845         (*buffer) += 4;
1846         return i;
1847 }
1848
1849 // REMOVEME
1850 float SB_ReadFloat (unsigned char **buffer)
1851 {
1852         union
1853         {
1854                 int             i;
1855                 float   f;
1856         } u;
1857
1858         u.i = SB_ReadInt (buffer);
1859         return u.f;
1860 }
1861
1862 static void Mod_Q1BSP_LoadSubmodels(lump_t *l, hullinfo_t *hullinfo)
1863 {
1864         unsigned char           *index;
1865         dmodel_t        *out;
1866         int                     i, j, count;
1867
1868         index = (unsigned char *)(mod_base + l->fileofs);
1869         if (l->filelen % (48+4*hullinfo->filehulls))
1870                 Host_Error ("Mod_Q1BSP_LoadSubmodels: funny lump size in %s", loadmodel->name);
1871
1872         count = l->filelen / (48+4*hullinfo->filehulls);
1873         out = (dmodel_t *)Mem_Alloc (loadmodel->mempool, count*sizeof(*out));
1874
1875         loadmodel->brushq1.submodels = out;
1876         loadmodel->brush.numsubmodels = count;
1877
1878         for (i = 0; i < count; i++, out++)
1879         {
1880         // spread out the mins / maxs by a pixel
1881                 out->mins[0] = SB_ReadFloat (&index) - 1;
1882                 out->mins[1] = SB_ReadFloat (&index) - 1;
1883                 out->mins[2] = SB_ReadFloat (&index) - 1;
1884                 out->maxs[0] = SB_ReadFloat (&index) + 1;
1885                 out->maxs[1] = SB_ReadFloat (&index) + 1;
1886                 out->maxs[2] = SB_ReadFloat (&index) + 1;
1887                 out->origin[0] = SB_ReadFloat (&index);
1888                 out->origin[1] = SB_ReadFloat (&index);
1889                 out->origin[2] = SB_ReadFloat (&index);
1890                 for (j = 0; j < hullinfo->filehulls; j++)
1891                         out->headnode[j] = SB_ReadInt (&index);
1892                 out->visleafs = SB_ReadInt (&index);
1893                 out->firstface = SB_ReadInt (&index);
1894                 out->numfaces = SB_ReadInt (&index);
1895         }
1896 }
1897
1898 static void Mod_Q1BSP_LoadEdges(lump_t *l)
1899 {
1900         dedge_t *in;
1901         medge_t *out;
1902         int     i, count;
1903
1904         in = (dedge_t *)(mod_base + l->fileofs);
1905         if (l->filelen % sizeof(*in))
1906                 Host_Error("Mod_Q1BSP_LoadEdges: funny lump size in %s",loadmodel->name);
1907         count = l->filelen / sizeof(*in);
1908         out = (medge_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1909
1910         loadmodel->brushq1.edges = out;
1911         loadmodel->brushq1.numedges = count;
1912
1913         for ( i=0 ; i<count ; i++, in++, out++)
1914         {
1915                 out->v[0] = (unsigned short)LittleShort(in->v[0]);
1916                 out->v[1] = (unsigned short)LittleShort(in->v[1]);
1917                 if (out->v[0] >= loadmodel->brushq1.numvertexes || out->v[1] >= loadmodel->brushq1.numvertexes)
1918                 {
1919                         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);
1920                         out->v[0] = 0;
1921                         out->v[1] = 0;
1922                 }
1923         }
1924 }
1925
1926 static void Mod_Q1BSP_LoadTexinfo(lump_t *l)
1927 {
1928         texinfo_t *in;
1929         mtexinfo_t *out;
1930         int i, j, k, count, miptex;
1931
1932         in = (texinfo_t *)(mod_base + l->fileofs);
1933         if (l->filelen % sizeof(*in))
1934                 Host_Error("Mod_Q1BSP_LoadTexinfo: funny lump size in %s",loadmodel->name);
1935         count = l->filelen / sizeof(*in);
1936         out = (mtexinfo_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
1937
1938         loadmodel->brushq1.texinfo = out;
1939         loadmodel->brushq1.numtexinfo = count;
1940
1941         for (i = 0;i < count;i++, in++, out++)
1942         {
1943                 for (k = 0;k < 2;k++)
1944                         for (j = 0;j < 4;j++)
1945                                 out->vecs[k][j] = LittleFloat(in->vecs[k][j]);
1946
1947                 miptex = LittleLong(in->miptex);
1948                 out->flags = LittleLong(in->flags);
1949
1950                 out->texture = NULL;
1951                 if (loadmodel->data_textures)
1952                 {
1953                         if ((unsigned int) miptex >= (unsigned int) loadmodel->num_textures)
1954                                 Con_Printf("error in model \"%s\": invalid miptex index %i(of %i)\n", loadmodel->name, miptex, loadmodel->num_textures);
1955                         else
1956                                 out->texture = loadmodel->data_textures + miptex;
1957                 }
1958                 if (out->flags & TEX_SPECIAL)
1959                 {
1960                         // if texture chosen is NULL or the shader needs a lightmap,
1961                         // force to notexture water shader
1962                         if (out->texture == NULL || out->texture->basematerialflags & MATERIALFLAG_WALL)
1963                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 1);
1964                 }
1965                 else
1966                 {
1967                         // if texture chosen is NULL, force to notexture
1968                         if (out->texture == NULL)
1969                                 out->texture = loadmodel->data_textures + (loadmodel->num_textures - 2);
1970                 }
1971         }
1972 }
1973
1974 #if 0
1975 void BoundPoly(int numverts, float *verts, vec3_t mins, vec3_t maxs)
1976 {
1977         int             i, j;
1978         float   *v;
1979
1980         mins[0] = mins[1] = mins[2] = 9999;
1981         maxs[0] = maxs[1] = maxs[2] = -9999;
1982         v = verts;
1983         for (i = 0;i < numverts;i++)
1984         {
1985                 for (j = 0;j < 3;j++, v++)
1986                 {
1987                         if (*v < mins[j])
1988                                 mins[j] = *v;
1989                         if (*v > maxs[j])
1990                                 maxs[j] = *v;
1991                 }
1992         }
1993 }
1994
1995 #define MAX_SUBDIVPOLYTRIANGLES 4096
1996 #define MAX_SUBDIVPOLYVERTS(MAX_SUBDIVPOLYTRIANGLES * 3)
1997
1998 static int subdivpolyverts, subdivpolytriangles;
1999 static int subdivpolyindex[MAX_SUBDIVPOLYTRIANGLES][3];
2000 static float subdivpolyvert[MAX_SUBDIVPOLYVERTS][3];
2001
2002 static int subdivpolylookupvert(vec3_t v)
2003 {
2004         int i;
2005         for (i = 0;i < subdivpolyverts;i++)
2006                 if (subdivpolyvert[i][0] == v[0]
2007                  && subdivpolyvert[i][1] == v[1]
2008                  && subdivpolyvert[i][2] == v[2])
2009                         return i;
2010         if (subdivpolyverts >= MAX_SUBDIVPOLYVERTS)
2011                 Host_Error("SubDividePolygon: ran out of vertices in buffer, please increase your r_subdivide_size");
2012         VectorCopy(v, subdivpolyvert[subdivpolyverts]);
2013         return subdivpolyverts++;
2014 }
2015
2016 static void SubdividePolygon(int numverts, float *verts)
2017 {
2018         int             i, i1, i2, i3, f, b, c, p;
2019         vec3_t  mins, maxs, front[256], back[256];
2020         float   m, *pv, *cv, dist[256], frac;
2021
2022         if (numverts > 250)
2023                 Host_Error("SubdividePolygon: ran out of verts in buffer");
2024
2025         BoundPoly(numverts, verts, mins, maxs);
2026
2027         for (i = 0;i < 3;i++)
2028         {
2029                 m = (mins[i] + maxs[i]) * 0.5;
2030                 m = r_subdivide_size.value * floor(m/r_subdivide_size.value + 0.5);
2031                 if (maxs[i] - m < 8)
2032                         continue;
2033                 if (m - mins[i] < 8)
2034                         continue;
2035
2036                 // cut it
2037                 for (cv = verts, c = 0;c < numverts;c++, cv += 3)
2038                         dist[c] = cv[i] - m;
2039
2040                 f = b = 0;
2041                 for (p = numverts - 1, c = 0, pv = verts + p * 3, cv = verts;c < numverts;p = c, c++, pv = cv, cv += 3)
2042                 {
2043                         if (dist[p] >= 0)
2044                         {
2045                                 VectorCopy(pv, front[f]);
2046                                 f++;
2047                         }
2048                         if (dist[p] <= 0)
2049                         {
2050                                 VectorCopy(pv, back[b]);
2051                                 b++;
2052                         }
2053                         if (dist[p] == 0 || dist[c] == 0)
2054                                 continue;
2055                         if ((dist[p] > 0) != (dist[c] > 0) )
2056                         {
2057                                 // clip point
2058                                 frac = dist[p] / (dist[p] - dist[c]);
2059                                 front[f][0] = back[b][0] = pv[0] + frac * (cv[0] - pv[0]);
2060                                 front[f][1] = back[b][1] = pv[1] + frac * (cv[1] - pv[1]);
2061                                 front[f][2] = back[b][2] = pv[2] + frac * (cv[2] - pv[2]);
2062                                 f++;
2063                                 b++;
2064                         }
2065                 }
2066
2067                 SubdividePolygon(f, front[0]);
2068                 SubdividePolygon(b, back[0]);
2069                 return;
2070         }
2071
2072         i1 = subdivpolylookupvert(verts);
2073         i2 = subdivpolylookupvert(verts + 3);
2074         for (i = 2;i < numverts;i++)
2075         {
2076                 if (subdivpolytriangles >= MAX_SUBDIVPOLYTRIANGLES)
2077                 {
2078                         Con_Print("SubdividePolygon: ran out of triangles in buffer, please increase your r_subdivide_size\n");
2079                         return;
2080                 }
2081
2082                 i3 = subdivpolylookupvert(verts + i * 3);
2083                 subdivpolyindex[subdivpolytriangles][0] = i1;
2084                 subdivpolyindex[subdivpolytriangles][1] = i2;
2085                 subdivpolyindex[subdivpolytriangles][2] = i3;
2086                 i2 = i3;
2087                 subdivpolytriangles++;
2088         }
2089 }
2090
2091 //Breaks a polygon up along axial 64 unit
2092 //boundaries so that turbulent and sky warps
2093 //can be done reasonably.
2094 static void Mod_Q1BSP_GenerateWarpMesh(msurface_t *surface)
2095 {
2096         int i, j;
2097         surfvertex_t *v;
2098         surfmesh_t *mesh;
2099
2100         subdivpolytriangles = 0;
2101         subdivpolyverts = 0;
2102         SubdividePolygon(surface->num_vertices, (surface->mesh->data_vertex3f + 3 * surface->num_firstvertex));
2103         if (subdivpolytriangles < 1)
2104                 Host_Error("Mod_Q1BSP_GenerateWarpMesh: no triangles?");
2105
2106         surface->mesh = mesh = Mem_Alloc(loadmodel->mempool, sizeof(surfmesh_t) + subdivpolytriangles * sizeof(int[3]) + subdivpolyverts * sizeof(surfvertex_t));
2107         mesh->num_vertices = subdivpolyverts;
2108         mesh->num_triangles = subdivpolytriangles;
2109         mesh->vertex = (surfvertex_t *)(mesh + 1);
2110         mesh->index = (int *)(mesh->vertex + mesh->num_vertices);
2111         memset(mesh->vertex, 0, mesh->num_vertices * sizeof(surfvertex_t));
2112
2113         for (i = 0;i < mesh->num_triangles;i++)
2114                 for (j = 0;j < 3;j++)
2115                         mesh->index[i*3+j] = subdivpolyindex[i][j];
2116
2117         for (i = 0, v = mesh->vertex;i < subdivpolyverts;i++, v++)
2118         {
2119                 VectorCopy(subdivpolyvert[i], v->v);
2120                 v->st[0] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[0]);
2121                 v->st[1] = DotProduct(v->v, surface->lightmapinfo->texinfo->vecs[1]);
2122         }
2123 }
2124 #endif
2125
2126 static qboolean Mod_Q1BSP_AllocLightmapBlock(int *lineused, int totalwidth, int totalheight, int blockwidth, int blockheight, int *outx, int *outy)
2127 {
2128         int y, x2, y2;
2129         int bestx = totalwidth, besty = 0;
2130         // find the left-most space we can find
2131         for (y = 0;y <= totalheight - blockheight;y++)
2132         {
2133                 x2 = 0;
2134                 for (y2 = 0;y2 < blockheight;y2++)
2135                         x2 = max(x2, lineused[y+y2]);
2136                 if (bestx > x2)
2137                 {
2138                         bestx = x2;
2139                         besty = y;
2140                 }
2141         }
2142         // if the best was not good enough, return failure
2143         if (bestx > totalwidth - blockwidth)
2144                 return false;
2145         // we found a good spot
2146         if (outx)
2147                 *outx = bestx;
2148         if (outy)
2149                 *outy = besty;
2150         // now mark the space used
2151         for (y2 = 0;y2 < blockheight;y2++)
2152                 lineused[besty+y2] = bestx + blockwidth;
2153         // return success
2154         return true;
2155 }
2156
2157 static void Mod_Q1BSP_LoadFaces(lump_t *l)
2158 {
2159         dface_t *in;
2160         msurface_t *surface;
2161         int i, j, count, surfacenum, planenum, smax, tmax, ssize, tsize, firstedge, numedges, totalverts, totaltris, lightmapnumber;
2162         float texmins[2], texmaxs[2], val, lightmaptexcoordscale;
2163 #define LIGHTMAPSIZE 256
2164         rtexture_t *lightmaptexture, *deluxemaptexture;
2165         int lightmap_lineused[LIGHTMAPSIZE];
2166
2167         in = (dface_t *)(mod_base + l->fileofs);
2168         if (l->filelen % sizeof(*in))
2169                 Host_Error("Mod_Q1BSP_LoadFaces: funny lump size in %s",loadmodel->name);
2170         count = l->filelen / sizeof(*in);
2171         loadmodel->data_surfaces = (msurface_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_t));
2172         loadmodel->data_surfaces_lightmapinfo = (msurface_lightmapinfo_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(msurface_lightmapinfo_t));
2173
2174         loadmodel->num_surfaces = count;
2175
2176         totalverts = 0;
2177         totaltris = 0;
2178         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs);surfacenum < count;surfacenum++, in++)
2179         {
2180                 numedges = LittleShort(in->numedges);
2181                 totalverts += numedges;
2182                 totaltris += numedges - 2;
2183         }
2184
2185         Mod_AllocSurfMesh(loadmodel->mempool, totalverts, totaltris, true, false, false);
2186
2187         lightmaptexture = NULL;
2188         deluxemaptexture = r_texture_blanknormalmap;
2189         lightmapnumber = 1;
2190         lightmaptexcoordscale = 1.0f / (float)LIGHTMAPSIZE;
2191
2192         totalverts = 0;
2193         totaltris = 0;
2194         for (surfacenum = 0, in = (dface_t *)(mod_base + l->fileofs), surface = loadmodel->data_surfaces;surfacenum < count;surfacenum++, in++, surface++)
2195         {
2196                 surface->lightmapinfo = loadmodel->data_surfaces_lightmapinfo + surfacenum;
2197
2198                 // FIXME: validate edges, texinfo, etc?
2199                 firstedge = LittleLong(in->firstedge);
2200                 numedges = LittleShort(in->numedges);
2201                 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)
2202                         Host_Error("Mod_Q1BSP_LoadFaces: invalid edge range (firstedge %i, numedges %i, model edges %i)", firstedge, numedges, loadmodel->brushq1.numsurfedges);
2203                 i = LittleShort(in->texinfo);
2204                 if ((unsigned int) i >= (unsigned int) loadmodel->brushq1.numtexinfo)
2205                         Host_Error("Mod_Q1BSP_LoadFaces: invalid texinfo index %i(model has %i texinfos)", i, loadmodel->brushq1.numtexinfo);
2206                 surface->lightmapinfo->texinfo = loadmodel->brushq1.texinfo + i;
2207                 surface->texture = surface->lightmapinfo->texinfo->texture;
2208
2209                 planenum = LittleShort(in->planenum);
2210                 if ((unsigned int) planenum >= (unsigned int) loadmodel->brush.num_planes)
2211                         Host_Error("Mod_Q1BSP_LoadFaces: invalid plane index %i (model has %i planes)", planenum, loadmodel->brush.num_planes);
2212
2213                 //surface->flags = surface->texture->flags;
2214                 //if (LittleShort(in->side))
2215                 //      surface->flags |= SURF_PLANEBACK;
2216                 //surface->plane = loadmodel->brush.data_planes + planenum;
2217
2218                 surface->num_firstvertex = totalverts;
2219                 surface->num_vertices = numedges;
2220                 surface->num_firsttriangle = totaltris;
2221                 surface->num_triangles = numedges - 2;
2222                 totalverts += numedges;
2223                 totaltris += numedges - 2;
2224
2225                 // convert edges back to a normal polygon
2226                 for (i = 0;i < surface->num_vertices;i++)
2227                 {
2228                         int lindex = loadmodel->brushq1.surfedges[firstedge + i];
2229                         float s, t;
2230                         if (lindex > 0)
2231                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[lindex].v[0]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2232                         else
2233                                 VectorCopy(loadmodel->brushq1.vertexes[loadmodel->brushq1.edges[-lindex].v[1]].position, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3);
2234                         s = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2235                         t = DotProduct(((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2236                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 0] = s / surface->texture->width;
2237                         (loadmodel->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[i * 2 + 1] = t / surface->texture->height;
2238                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = 0;
2239                         (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = 0;
2240                         (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = 0;
2241                 }
2242
2243                 for (i = 0;i < surface->num_triangles;i++)
2244                 {
2245                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 0] = 0 + surface->num_firstvertex;
2246                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 1] = i + 1 + surface->num_firstvertex;
2247                         (loadmodel->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[i * 3 + 2] = i + 2 + surface->num_firstvertex;
2248                 }
2249
2250                 // compile additional data about the surface geometry
2251                 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);
2252                 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);
2253                 BoxFromPoints(surface->mins, surface->maxs, surface->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex));
2254
2255                 // generate surface extents information
2256                 texmins[0] = texmaxs[0] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3];
2257                 texmins[1] = texmaxs[1] = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex), surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3];
2258                 for (i = 1;i < surface->num_vertices;i++)
2259                 {
2260                         for (j = 0;j < 2;j++)
2261                         {
2262                                 val = DotProduct((loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex) + i * 3, surface->lightmapinfo->texinfo->vecs[j]) + surface->lightmapinfo->texinfo->vecs[j][3];
2263                                 texmins[j] = min(texmins[j], val);
2264                                 texmaxs[j] = max(texmaxs[j], val);
2265                         }
2266                 }
2267                 for (i = 0;i < 2;i++)
2268                 {
2269                         surface->lightmapinfo->texturemins[i] = (int) floor(texmins[i] / 16.0) * 16;
2270                         surface->lightmapinfo->extents[i] = (int) ceil(texmaxs[i] / 16.0) * 16 - surface->lightmapinfo->texturemins[i];
2271                 }
2272
2273                 smax = surface->lightmapinfo->extents[0] >> 4;
2274                 tmax = surface->lightmapinfo->extents[1] >> 4;
2275                 ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
2276                 tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
2277
2278                 // lighting info
2279                 for (i = 0;i < MAXLIGHTMAPS;i++)
2280                         surface->lightmapinfo->styles[i] = in->styles[i];
2281                 surface->lightmaptexture = NULL;
2282                 surface->deluxemaptexture = r_texture_blanknormalmap;
2283                 i = LittleLong(in->lightofs);
2284                 if (i == -1)
2285                 {
2286                         surface->lightmapinfo->samples = NULL;
2287                         // give non-lightmapped water a 1x white lightmap
2288                         if ((surface->texture->basematerialflags & MATERIALFLAG_WATER) && (surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) && ssize <= 256 && tsize <= 256)
2289                         {
2290                                 surface->lightmapinfo->samples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2291                                 surface->lightmapinfo->styles[0] = 0;
2292                                 memset(surface->lightmapinfo->samples, 128, ssize * tsize * 3);
2293                         }
2294                 }
2295                 else if (loadmodel->brush.ishlbsp) // LordHavoc: HalfLife map (bsp version 30)
2296                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + i;
2297                 else // LordHavoc: white lighting (bsp version 29)
2298                 {
2299                         surface->lightmapinfo->samples = loadmodel->brushq1.lightdata + (i * 3);
2300                         if (loadmodel->brushq1.nmaplightdata)
2301                                 surface->lightmapinfo->nmapsamples = loadmodel->brushq1.nmaplightdata + (i * 3);
2302                 }
2303
2304                 // check if we should apply a lightmap to this
2305                 if (!(surface->lightmapinfo->texinfo->flags & TEX_SPECIAL) || surface->lightmapinfo->samples)
2306                 {
2307                         int i, iu, iv, lightmapx, lightmapy;
2308                         float u, v, ubase, vbase, uscale, vscale;
2309
2310                         if (ssize > 256 || tsize > 256)
2311                                 Host_Error("Bad surface extents");
2312                         // force lightmap upload on first time seeing the surface
2313                         surface->cached_dlight = true;
2314                         // stainmap for permanent marks on walls
2315                         surface->lightmapinfo->stainsamples = (unsigned char *)Mem_Alloc(loadmodel->mempool, ssize * tsize * 3);
2316                         // clear to white
2317                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
2318
2319                         // find a place for this lightmap
2320                         if (!lightmaptexture || !Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy))
2321                         {
2322                                 // allocate a texture pool if we need it
2323                                 if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
2324                                         loadmodel->texturepool = R_AllocTexturePool();
2325                                 // could not find room, make a new lightmap
2326                                 lightmaptexture = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2327                                 if (loadmodel->brushq1.nmaplightdata)
2328                                         deluxemaptexture = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%i", lightmapnumber), LIGHTMAPSIZE, LIGHTMAPSIZE, NULL, loadmodel->brushq1.lightmaprgba ? TEXTYPE_RGBA : TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
2329                                 lightmapnumber++;
2330                                 memset(lightmap_lineused, 0, sizeof(lightmap_lineused));
2331                                 Mod_Q1BSP_AllocLightmapBlock(lightmap_lineused, LIGHTMAPSIZE, LIGHTMAPSIZE, ssize, tsize, &lightmapx, &lightmapy);
2332                         }
2333
2334                         surface->lightmaptexture = lightmaptexture;
2335                         surface->deluxemaptexture = deluxemaptexture;
2336                         surface->lightmapinfo->lightmaporigin[0] = lightmapx;
2337                         surface->lightmapinfo->lightmaporigin[1] = lightmapy;
2338
2339                         ubase = lightmapx * lightmaptexcoordscale;
2340                         vbase = lightmapy * lightmaptexcoordscale;
2341                         uscale = lightmaptexcoordscale;
2342                         vscale = lightmaptexcoordscale;
2343
2344                         for (i = 0;i < surface->num_vertices;i++)
2345                         {
2346                                 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);
2347                                 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);
2348                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 0] = u * uscale + ubase;
2349                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[i * 2 + 1] = v * vscale + vbase;
2350                                 // LordHavoc: calc lightmap data offset for vertex lighting to use
2351                                 iu = (int) u;
2352                                 iv = (int) v;
2353                                 (loadmodel->surfmesh.data_lightmapoffsets + surface->num_firstvertex)[i] = (bound(0, iv, tmax) * ssize + bound(0, iu, smax)) * 3;
2354                         }
2355                 }
2356         }
2357 }
2358
2359 static void Mod_Q1BSP_LoadNodes_RecursiveSetParent(mnode_t *node, mnode_t *parent)
2360 {
2361         //if (node->parent)
2362         //      Host_Error("Mod_Q1BSP_LoadNodes_RecursiveSetParent: runaway recursion");
2363         node->parent = parent;
2364         if (node->plane)
2365         {
2366                 // this is a node, recurse to children
2367                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[0], node);
2368                 Mod_Q1BSP_LoadNodes_RecursiveSetParent(node->children[1], node);
2369                 // combine supercontents of children
2370                 node->combinedsupercontents = node->children[0]->combinedsupercontents | node->children[1]->combinedsupercontents;
2371         }
2372         else
2373         {
2374                 int j;
2375                 mleaf_t *leaf = (mleaf_t *)node;
2376                 // if this is a leaf, calculate supercontents mask from all collidable
2377                 // primitives in the leaf (brushes and collision surfaces)
2378                 // also flag if the leaf contains any collision surfaces
2379                 leaf->combinedsupercontents = 0;
2380                 // combine the supercontents values of all brushes in this leaf
2381                 for (j = 0;j < leaf->numleafbrushes;j++)
2382                         leaf->combinedsupercontents |= loadmodel->brush.data_brushes[leaf->firstleafbrush[j]].texture->supercontents;
2383                 // check if this leaf contains any collision surfaces (q3 patches)
2384                 for (j = 0;j < leaf->numleafsurfaces;j++)
2385                 {
2386                         msurface_t *surface = loadmodel->data_surfaces + leaf->firstleafsurface[j];
2387                         if (surface->num_collisiontriangles)
2388                         {
2389                                 leaf->containscollisionsurfaces = true;
2390                                 leaf->combinedsupercontents |= surface->texture->supercontents;
2391                         }
2392                 }
2393         }
2394 }
2395
2396 static void Mod_Q1BSP_LoadNodes(lump_t *l)
2397 {
2398         int                     i, j, count, p;
2399         dnode_t         *in;
2400         mnode_t         *out;
2401
2402         in = (dnode_t *)(mod_base + l->fileofs);
2403         if (l->filelen % sizeof(*in))
2404                 Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
2405         count = l->filelen / sizeof(*in);
2406         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2407
2408         loadmodel->brush.data_nodes = out;
2409         loadmodel->brush.num_nodes = count;
2410
2411         for ( i=0 ; i<count ; i++, in++, out++)
2412         {
2413                 for (j=0 ; j<3 ; j++)
2414                 {
2415                         out->mins[j] = LittleShort(in->mins[j]);
2416                         out->maxs[j] = LittleShort(in->maxs[j]);
2417                 }
2418
2419                 p = LittleLong(in->planenum);
2420                 out->plane = loadmodel->brush.data_planes + p;
2421
2422                 out->firstsurface = LittleShort(in->firstface);
2423                 out->numsurfaces = LittleShort(in->numfaces);
2424
2425                 for (j=0 ; j<2 ; j++)
2426                 {
2427                         p = LittleShort(in->children[j]);
2428                         if (p >= 0)
2429                                 out->children[j] = loadmodel->brush.data_nodes + p;
2430                         else
2431                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + (-1 - p));
2432                 }
2433         }
2434
2435         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);      // sets nodes and leafs
2436 }
2437
2438 static void Mod_Q1BSP_LoadLeafs(lump_t *l)
2439 {
2440         dleaf_t *in;
2441         mleaf_t *out;
2442         int i, j, count, p;
2443
2444         in = (dleaf_t *)(mod_base + l->fileofs);
2445         if (l->filelen % sizeof(*in))
2446                 Host_Error("Mod_Q1BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
2447         count = l->filelen / sizeof(*in);
2448         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2449
2450         loadmodel->brush.data_leafs = out;
2451         loadmodel->brush.num_leafs = count;
2452         // get visleafs from the submodel data
2453         loadmodel->brush.num_pvsclusters = loadmodel->brushq1.submodels[0].visleafs;
2454         loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters+7)>>3;
2455         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2456         memset(loadmodel->brush.data_pvsclusters, 0xFF, loadmodel->brush.num_pvsclusters * loadmodel->brush.num_pvsclusterbytes);
2457
2458         for ( i=0 ; i<count ; i++, in++, out++)
2459         {
2460                 for (j=0 ; j<3 ; j++)
2461                 {
2462                         out->mins[j] = LittleShort(in->mins[j]);
2463                         out->maxs[j] = LittleShort(in->maxs[j]);
2464                 }
2465
2466                 // FIXME: this function could really benefit from some error checking
2467
2468                 out->contents = LittleLong(in->contents);
2469
2470                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + LittleShort(in->firstmarksurface);
2471                 out->numleafsurfaces = LittleShort(in->nummarksurfaces);
2472                 if (out->firstleafsurface < 0 || LittleShort(in->firstmarksurface) + out->numleafsurfaces > loadmodel->brush.num_leafsurfaces)
2473                 {
2474                         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);
2475                         out->firstleafsurface = NULL;
2476                         out->numleafsurfaces = 0;
2477                 }
2478
2479                 out->clusterindex = i - 1;
2480                 if (out->clusterindex >= loadmodel->brush.num_pvsclusters)
2481                         out->clusterindex = -1;
2482
2483                 p = LittleLong(in->visofs);
2484                 // ignore visofs errors on leaf 0 (solid)
2485                 if (p >= 0 && out->clusterindex >= 0)
2486                 {
2487                         if (p >= loadmodel->brushq1.num_compressedpvs)
2488                                 Con_Print("Mod_Q1BSP_LoadLeafs: invalid visofs\n");
2489                         else
2490                                 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);
2491                 }
2492
2493                 for (j = 0;j < 4;j++)
2494                         out->ambient_sound_level[j] = in->ambient_level[j];
2495
2496                 // FIXME: Insert caustics here
2497         }
2498 }
2499
2500 qboolean Mod_Q1BSP_CheckWaterAlphaSupport(void)
2501 {
2502         int i, j;
2503         mleaf_t *leaf;
2504         const unsigned char *pvs;
2505         // check all liquid leafs to see if they can see into empty leafs, if any
2506         // can we can assume this map supports r_wateralpha
2507         for (i = 0, leaf = loadmodel->brush.data_leafs;i < loadmodel->brush.num_leafs;i++, leaf++)
2508         {
2509                 if ((leaf->contents == CONTENTS_WATER || leaf->contents == CONTENTS_SLIME) && (leaf->clusterindex >= 0 && loadmodel->brush.data_pvsclusters))
2510                 {
2511                         pvs = loadmodel->brush.data_pvsclusters + leaf->clusterindex * loadmodel->brush.num_pvsclusterbytes;
2512                         for (j = 0;j < loadmodel->brush.num_leafs;j++)
2513                                 if (CHECKPVSBIT(pvs, loadmodel->brush.data_leafs[j].clusterindex) && loadmodel->brush.data_leafs[j].contents == CONTENTS_EMPTY)
2514                                         return true;
2515                 }
2516         }
2517         return false;
2518 }
2519
2520 static void Mod_Q1BSP_LoadClipnodes(lump_t *l, hullinfo_t *hullinfo)
2521 {
2522         dclipnode_t *in, *out;
2523         int                     i, count;
2524         hull_t          *hull;
2525
2526         in = (dclipnode_t *)(mod_base + l->fileofs);
2527         if (l->filelen % sizeof(*in))
2528                 Host_Error("Mod_Q1BSP_LoadClipnodes: funny lump size in %s",loadmodel->name);
2529         count = l->filelen / sizeof(*in);
2530         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
2531
2532         loadmodel->brushq1.clipnodes = out;
2533         loadmodel->brushq1.numclipnodes = count;
2534
2535         for (i = 1; i < hullinfo->numhulls; i++)
2536         {
2537                 hull = &loadmodel->brushq1.hulls[i];
2538                 hull->clipnodes = out;
2539                 hull->firstclipnode = 0;
2540                 hull->lastclipnode = count-1;
2541                 hull->planes = loadmodel->brush.data_planes;
2542                 hull->clip_mins[0] = hullinfo->hullsizes[i][0][0];
2543                 hull->clip_mins[1] = hullinfo->hullsizes[i][0][1];
2544                 hull->clip_mins[2] = hullinfo->hullsizes[i][0][2];
2545                 hull->clip_maxs[0] = hullinfo->hullsizes[i][1][0];
2546                 hull->clip_maxs[1] = hullinfo->hullsizes[i][1][1];
2547                 hull->clip_maxs[2] = hullinfo->hullsizes[i][1][2];
2548                 VectorSubtract(hull->clip_maxs, hull->clip_mins, hull->clip_size);
2549         }
2550
2551         for (i=0 ; i<count ; i++, out++, in++)
2552         {
2553                 out->planenum = LittleLong(in->planenum);
2554                 out->children[0] = LittleShort(in->children[0]);
2555                 out->children[1] = LittleShort(in->children[1]);
2556                 if (out->planenum < 0 || out->planenum >= loadmodel->brush.num_planes)
2557                         Host_Error("Corrupt clipping hull(out of range planenum)");
2558                 if (out->children[0] >= count || out->children[1] >= count)
2559                         Host_Error("Corrupt clipping hull(out of range child)");
2560         }
2561 }
2562
2563 //Duplicate the drawing hull structure as a clipping hull
2564 static void Mod_Q1BSP_MakeHull0(void)
2565 {
2566         mnode_t         *in;
2567         dclipnode_t *out;
2568         int                     i;
2569         hull_t          *hull;
2570
2571         hull = &loadmodel->brushq1.hulls[0];
2572
2573         in = loadmodel->brush.data_nodes;
2574         out = (dclipnode_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_nodes * sizeof(dclipnode_t));
2575
2576         hull->clipnodes = out;
2577         hull->firstclipnode = 0;
2578         hull->lastclipnode = loadmodel->brush.num_nodes - 1;
2579         hull->planes = loadmodel->brush.data_planes;
2580
2581         for (i = 0;i < loadmodel->brush.num_nodes;i++, out++, in++)
2582         {
2583                 out->planenum = in->plane - loadmodel->brush.data_planes;
2584                 out->children[0] = in->children[0]->plane ? in->children[0] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[0])->contents;
2585                 out->children[1] = in->children[1]->plane ? in->children[1] - loadmodel->brush.data_nodes : ((mleaf_t *)in->children[1])->contents;
2586         }
2587 }
2588
2589 static void Mod_Q1BSP_LoadLeaffaces(lump_t *l)
2590 {
2591         int i, j;
2592         short *in;
2593
2594         in = (short *)(mod_base + l->fileofs);
2595         if (l->filelen % sizeof(*in))
2596                 Host_Error("Mod_Q1BSP_LoadLeaffaces: funny lump size in %s",loadmodel->name);
2597         loadmodel->brush.num_leafsurfaces = l->filelen / sizeof(*in);
2598         loadmodel->brush.data_leafsurfaces = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_leafsurfaces * sizeof(int));
2599
2600         for (i = 0;i < loadmodel->brush.num_leafsurfaces;i++)
2601         {
2602                 j = (unsigned) LittleShort(in[i]);
2603                 if (j >= loadmodel->num_surfaces)
2604                         Host_Error("Mod_Q1BSP_LoadLeaffaces: bad surface number");
2605                 loadmodel->brush.data_leafsurfaces[i] = j;
2606         }
2607 }
2608
2609 static void Mod_Q1BSP_LoadSurfedges(lump_t *l)
2610 {
2611         int             i;
2612         int             *in;
2613
2614         in = (int *)(mod_base + l->fileofs);
2615         if (l->filelen % sizeof(*in))
2616                 Host_Error("Mod_Q1BSP_LoadSurfedges: funny lump size in %s",loadmodel->name);
2617         loadmodel->brushq1.numsurfedges = l->filelen / sizeof(*in);
2618         loadmodel->brushq1.surfedges = (int *)Mem_Alloc(loadmodel->mempool, loadmodel->brushq1.numsurfedges * sizeof(int));
2619
2620         for (i = 0;i < loadmodel->brushq1.numsurfedges;i++)
2621                 loadmodel->brushq1.surfedges[i] = LittleLong(in[i]);
2622 }
2623
2624
2625 static void Mod_Q1BSP_LoadPlanes(lump_t *l)
2626 {
2627         int                     i;
2628         mplane_t        *out;
2629         dplane_t        *in;
2630
2631         in = (dplane_t *)(mod_base + l->fileofs);
2632         if (l->filelen % sizeof(*in))
2633                 Host_Error("Mod_Q1BSP_LoadPlanes: funny lump size in %s", loadmodel->name);
2634
2635         loadmodel->brush.num_planes = l->filelen / sizeof(*in);
2636         loadmodel->brush.data_planes = out = (mplane_t *)Mem_Alloc(loadmodel->mempool, loadmodel->brush.num_planes * sizeof(*out));
2637
2638         for (i = 0;i < loadmodel->brush.num_planes;i++, in++, out++)
2639         {
2640                 out->normal[0] = LittleFloat(in->normal[0]);
2641                 out->normal[1] = LittleFloat(in->normal[1]);
2642                 out->normal[2] = LittleFloat(in->normal[2]);
2643                 out->dist = LittleFloat(in->dist);
2644
2645                 PlaneClassify(out);
2646         }
2647 }
2648
2649 static void Mod_Q1BSP_LoadMapBrushes(void)
2650 {
2651 #if 0
2652 // unfinished
2653         int submodel, numbrushes;
2654         qboolean firstbrush;
2655         char *text, *maptext;
2656         char mapfilename[MAX_QPATH];
2657         FS_StripExtension (loadmodel->name, mapfilename, sizeof (mapfilename));
2658         strlcat (mapfilename, ".map", sizeof (mapfilename));
2659         maptext = (unsigned char*) FS_LoadFile(mapfilename, tempmempool, false, NULL);
2660         if (!maptext)
2661                 return;
2662         text = maptext;
2663         if (!COM_ParseTokenConsole(&data))
2664                 return; // error
2665         submodel = 0;
2666         for (;;)
2667         {
2668                 if (!COM_ParseTokenConsole(&data))
2669                         break;
2670                 if (com_token[0] != '{')
2671                         return; // error
2672                 // entity
2673                 firstbrush = true;
2674                 numbrushes = 0;
2675                 maxbrushes = 256;
2676                 brushes = Mem_Alloc(loadmodel->mempool, maxbrushes * sizeof(mbrush_t));
2677                 for (;;)
2678                 {
2679                         if (!COM_ParseTokenConsole(&data))
2680                                 return; // error
2681                         if (com_token[0] == '}')
2682                                 break; // end of entity
2683                         if (com_token[0] == '{')
2684                         {
2685                                 // brush
2686                                 if (firstbrush)
2687                                 {
2688                                         if (submodel)
2689                                         {
2690                                                 if (submodel > loadmodel->brush.numsubmodels)
2691                                                 {
2692                                                         Con_Printf("Mod_Q1BSP_LoadMapBrushes: .map has more submodels than .bsp!\n");
2693                                                         model = NULL;
2694                                                 }
2695                                                 else
2696                                                         model = loadmodel->brush.submodels[submodel];
2697                                         }
2698                                         else
2699                                                 model = loadmodel;
2700                                 }
2701                                 for (;;)
2702                                 {
2703                                         if (!COM_ParseTokenConsole(&data))
2704                                                 return; // error
2705                                         if (com_token[0] == '}')
2706                                                 break; // end of brush
2707                                         // each brush face should be this format:
2708                                         // ( x y z ) ( x y z ) ( x y z ) texture scroll_s scroll_t rotateangle scale_s scale_t
2709                                         // FIXME: support hl .map format
2710                                         for (pointnum = 0;pointnum < 3;pointnum++)
2711                                         {
2712                                                 COM_ParseTokenConsole(&data);
2713                                                 for (componentnum = 0;componentnum < 3;componentnum++)
2714                                                 {
2715                                                         COM_ParseTokenConsole(&data);
2716                                                         point[pointnum][componentnum] = atof(com_token);
2717                                                 }
2718                                                 COM_ParseTokenConsole(&data);
2719                                         }
2720                                         COM_ParseTokenConsole(&data);
2721                                         strlcpy(facetexture, com_token, sizeof(facetexture));
2722                                         COM_ParseTokenConsole(&data);
2723                                         //scroll_s = atof(com_token);
2724                                         COM_ParseTokenConsole(&data);
2725                                         //scroll_t = atof(com_token);
2726                                         COM_ParseTokenConsole(&data);
2727                                         //rotate = atof(com_token);
2728                                         COM_ParseTokenConsole(&data);
2729                                         //scale_s = atof(com_token);
2730                                         COM_ParseTokenConsole(&data);
2731                                         //scale_t = atof(com_token);
2732                                         TriangleNormal(point[0], point[1], point[2], planenormal);
2733                                         VectorNormalizeDouble(planenormal);
2734                                         planedist = DotProduct(point[0], planenormal);
2735                                         //ChooseTexturePlane(planenormal, texturevector[0], texturevector[1]);
2736                                 }
2737                                 continue;
2738                         }
2739                 }
2740         }
2741 #endif
2742 }
2743
2744
2745 #define MAX_PORTALPOINTS 64
2746
2747 typedef struct portal_s
2748 {
2749         mplane_t plane;
2750         mnode_t *nodes[2];              // [0] = front side of plane
2751         struct portal_s *next[2];
2752         int numpoints;
2753         double points[3*MAX_PORTALPOINTS];
2754         struct portal_s *chain; // all portals are linked into a list
2755 }
2756 portal_t;
2757
2758 static portal_t *portalchain;
2759
2760 /*
2761 ===========
2762 AllocPortal
2763 ===========
2764 */
2765 static portal_t *AllocPortal(void)
2766 {
2767         portal_t *p;
2768         p = (portal_t *)Mem_Alloc(loadmodel->mempool, sizeof(portal_t));
2769         p->chain = portalchain;
2770         portalchain = p;
2771         return p;
2772 }
2773
2774 static void FreePortal(portal_t *p)
2775 {
2776         Mem_Free(p);
2777 }
2778
2779 static void Mod_Q1BSP_RecursiveRecalcNodeBBox(mnode_t *node)
2780 {
2781         // process only nodes (leafs already had their box calculated)
2782         if (!node->plane)
2783                 return;
2784
2785         // calculate children first
2786         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[0]);
2787         Mod_Q1BSP_RecursiveRecalcNodeBBox(node->children[1]);
2788
2789         // make combined bounding box from children
2790         node->mins[0] = min(node->children[0]->mins[0], node->children[1]->mins[0]);
2791         node->mins[1] = min(node->children[0]->mins[1], node->children[1]->mins[1]);
2792         node->mins[2] = min(node->children[0]->mins[2], node->children[1]->mins[2]);
2793         node->maxs[0] = max(node->children[0]->maxs[0], node->children[1]->maxs[0]);
2794         node->maxs[1] = max(node->children[0]->maxs[1], node->children[1]->maxs[1]);
2795         node->maxs[2] = max(node->children[0]->maxs[2], node->children[1]->maxs[2]);
2796 }
2797
2798 static void Mod_Q1BSP_FinalizePortals(void)
2799 {
2800         int i, j, numportals, numpoints;
2801         portal_t *p, *pnext;
2802         mportal_t *portal;
2803         mvertex_t *point;
2804         mleaf_t *leaf, *endleaf;
2805
2806         // tally up portal and point counts and recalculate bounding boxes for all
2807         // leafs (because qbsp is very sloppy)
2808         leaf = loadmodel->brush.data_leafs;
2809         endleaf = leaf + loadmodel->brush.num_leafs;
2810         for (;leaf < endleaf;leaf++)
2811         {
2812                 VectorSet(leaf->mins,  2000000000,  2000000000,  2000000000);
2813                 VectorSet(leaf->maxs, -2000000000, -2000000000, -2000000000);
2814         }
2815         p = portalchain;
2816         numportals = 0;
2817         numpoints = 0;
2818         while (p)
2819         {
2820                 // note: this check must match the one below or it will usually corrupt memory
2821                 // 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
2822                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1] && ((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2823                 {
2824                         numportals += 2;
2825                         numpoints += p->numpoints * 2;
2826                 }
2827                 p = p->chain;
2828         }
2829         loadmodel->brush.data_portals = (mportal_t *)Mem_Alloc(loadmodel->mempool, numportals * sizeof(mportal_t) + numpoints * sizeof(mvertex_t));
2830         loadmodel->brush.num_portals = numportals;
2831         loadmodel->brush.data_portalpoints = (mvertex_t *)((unsigned char *) loadmodel->brush.data_portals + numportals * sizeof(mportal_t));
2832         loadmodel->brush.num_portalpoints = numpoints;
2833         // clear all leaf portal chains
2834         for (i = 0;i < loadmodel->brush.num_leafs;i++)
2835                 loadmodel->brush.data_leafs[i].portals = NULL;
2836         // process all portals in the global portal chain, while freeing them
2837         portal = loadmodel->brush.data_portals;
2838         point = loadmodel->brush.data_portalpoints;
2839         p = portalchain;
2840         portalchain = NULL;
2841         while (p)
2842         {
2843                 pnext = p->chain;
2844
2845                 if (p->numpoints >= 3 && p->nodes[0] != p->nodes[1])
2846                 {
2847                         // note: this check must match the one above or it will usually corrupt memory
2848                         // 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
2849                         if (((mleaf_t *)p->nodes[0])->clusterindex >= 0 && ((mleaf_t *)p->nodes[1])->clusterindex >= 0)
2850                         {
2851                                 // first make the back to front portal(forward portal)
2852                                 portal->points = point;
2853                                 portal->numpoints = p->numpoints;
2854                                 portal->plane.dist = p->plane.dist;
2855                                 VectorCopy(p->plane.normal, portal->plane.normal);
2856                                 portal->here = (mleaf_t *)p->nodes[1];
2857                                 portal->past = (mleaf_t *)p->nodes[0];
2858                                 // copy points
2859                                 for (j = 0;j < portal->numpoints;j++)
2860                                 {
2861                                         VectorCopy(p->points + j*3, point->position);
2862                                         point++;
2863                                 }
2864                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2865                                 PlaneClassify(&portal->plane);
2866
2867                                 // link into leaf's portal chain
2868                                 portal->next = portal->here->portals;
2869                                 portal->here->portals = portal;
2870
2871                                 // advance to next portal
2872                                 portal++;
2873
2874                                 // then make the front to back portal(backward portal)
2875                                 portal->points = point;
2876                                 portal->numpoints = p->numpoints;
2877                                 portal->plane.dist = -p->plane.dist;
2878                                 VectorNegate(p->plane.normal, portal->plane.normal);
2879                                 portal->here = (mleaf_t *)p->nodes[0];
2880                                 portal->past = (mleaf_t *)p->nodes[1];
2881                                 // copy points
2882                                 for (j = portal->numpoints - 1;j >= 0;j--)
2883                                 {
2884                                         VectorCopy(p->points + j*3, point->position);
2885                                         point++;
2886                                 }
2887                                 BoxFromPoints(portal->mins, portal->maxs, portal->numpoints, portal->points->position);
2888                                 PlaneClassify(&portal->plane);
2889
2890                                 // link into leaf's portal chain
2891                                 portal->next = portal->here->portals;
2892                                 portal->here->portals = portal;
2893
2894                                 // advance to next portal
2895                                 portal++;
2896                         }
2897                         // add the portal's polygon points to the leaf bounding boxes
2898                         for (i = 0;i < 2;i++)
2899                         {
2900                                 leaf = (mleaf_t *)p->nodes[i];
2901                                 for (j = 0;j < p->numpoints;j++)
2902                                 {
2903                                         if (leaf->mins[0] > p->points[j*3+0]) leaf->mins[0] = p->points[j*3+0];
2904                                         if (leaf->mins[1] > p->points[j*3+1]) leaf->mins[1] = p->points[j*3+1];
2905                                         if (leaf->mins[2] > p->points[j*3+2]) leaf->mins[2] = p->points[j*3+2];
2906                                         if (leaf->maxs[0] < p->points[j*3+0]) leaf->maxs[0] = p->points[j*3+0];
2907                                         if (leaf->maxs[1] < p->points[j*3+1]) leaf->maxs[1] = p->points[j*3+1];
2908                                         if (leaf->maxs[2] < p->points[j*3+2]) leaf->maxs[2] = p->points[j*3+2];
2909                                 }
2910                         }
2911                 }
2912                 FreePortal(p);
2913                 p = pnext;
2914         }
2915         // now recalculate the node bounding boxes from the leafs
2916         Mod_Q1BSP_RecursiveRecalcNodeBBox(loadmodel->brush.data_nodes);
2917 }
2918
2919 /*
2920 =============
2921 AddPortalToNodes
2922 =============
2923 */
2924 static void AddPortalToNodes(portal_t *p, mnode_t *front, mnode_t *back)
2925 {
2926         if (!front)
2927                 Host_Error("AddPortalToNodes: NULL front node");
2928         if (!back)
2929                 Host_Error("AddPortalToNodes: NULL back node");
2930         if (p->nodes[0] || p->nodes[1])
2931                 Host_Error("AddPortalToNodes: already included");
2932         // 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
2933
2934         p->nodes[0] = front;
2935         p->next[0] = (portal_t *)front->portals;
2936         front->portals = (mportal_t *)p;
2937
2938         p->nodes[1] = back;
2939         p->next[1] = (portal_t *)back->portals;
2940         back->portals = (mportal_t *)p;
2941 }
2942
2943 /*
2944 =============
2945 RemovePortalFromNode
2946 =============
2947 */
2948 static void RemovePortalFromNodes(portal_t *portal)
2949 {
2950         int i;
2951         mnode_t *node;
2952         void **portalpointer;
2953         portal_t *t;
2954         for (i = 0;i < 2;i++)
2955         {
2956                 node = portal->nodes[i];
2957
2958                 portalpointer = (void **) &node->portals;
2959                 while (1)
2960                 {
2961                         t = (portal_t *)*portalpointer;
2962                         if (!t)
2963                                 Host_Error("RemovePortalFromNodes: portal not in leaf");
2964
2965                         if (t == portal)
2966                         {
2967                                 if (portal->nodes[0] == node)
2968                                 {
2969                                         *portalpointer = portal->next[0];
2970                                         portal->nodes[0] = NULL;
2971                                 }
2972                                 else if (portal->nodes[1] == node)
2973                                 {
2974                                         *portalpointer = portal->next[1];
2975                                         portal->nodes[1] = NULL;
2976                                 }
2977                                 else
2978                                         Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2979                                 break;
2980                         }
2981
2982                         if (t->nodes[0] == node)
2983                                 portalpointer = (void **) &t->next[0];
2984                         else if (t->nodes[1] == node)
2985                                 portalpointer = (void **) &t->next[1];
2986                         else
2987                                 Host_Error("RemovePortalFromNodes: portal not bounding leaf");
2988                 }
2989         }
2990 }
2991
2992 #define PORTAL_DIST_EPSILON (1.0 / 32.0)
2993 static void Mod_Q1BSP_RecursiveNodePortals(mnode_t *node)
2994 {
2995         int i, side;
2996         mnode_t *front, *back, *other_node;
2997         mplane_t clipplane, *plane;
2998         portal_t *portal, *nextportal, *nodeportal, *splitportal, *temp;
2999         int numfrontpoints, numbackpoints;
3000         double frontpoints[3*MAX_PORTALPOINTS], backpoints[3*MAX_PORTALPOINTS];
3001
3002         // if a leaf, we're done
3003         if (!node->plane)
3004                 return;
3005
3006         plane = node->plane;
3007
3008         front = node->children[0];
3009         back = node->children[1];
3010         if (front == back)
3011                 Host_Error("Mod_Q1BSP_RecursiveNodePortals: corrupt node hierarchy");
3012
3013         // create the new portal by generating a polygon for the node plane,
3014         // and clipping it by all of the other portals(which came from nodes above this one)
3015         nodeportal = AllocPortal();
3016         nodeportal->plane = *plane;
3017
3018         // 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)
3019         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);
3020         nodeportal->numpoints = 4;
3021         side = 0;       // shut up compiler warning
3022         for (portal = (portal_t *)node->portals;portal;portal = portal->next[side])
3023         {
3024                 clipplane = portal->plane;
3025                 if (portal->nodes[0] == portal->nodes[1])
3026                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(1)");
3027                 if (portal->nodes[0] == node)
3028                         side = 0;
3029                 else if (portal->nodes[1] == node)
3030                 {
3031                         clipplane.dist = -clipplane.dist;
3032                         VectorNegate(clipplane.normal, clipplane.normal);
3033                         side = 1;
3034                 }
3035                 else
3036                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3037
3038                 for (i = 0;i < nodeportal->numpoints*3;i++)
3039                         frontpoints[i] = nodeportal->points[i];
3040                 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);
3041                 if (nodeportal->numpoints <= 0 || nodeportal->numpoints >= MAX_PORTALPOINTS)
3042                         break;
3043         }
3044
3045         if (nodeportal->numpoints < 3)
3046         {
3047                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal was clipped away\n");
3048                 nodeportal->numpoints = 0;
3049         }
3050         else if (nodeportal->numpoints >= MAX_PORTALPOINTS)
3051         {
3052                 Con_Print("Mod_Q1BSP_RecursiveNodePortals: WARNING: new portal has too many points\n");
3053                 nodeportal->numpoints = 0;
3054         }
3055
3056         AddPortalToNodes(nodeportal, front, back);
3057
3058         // split the portals of this node along this node's plane and assign them to the children of this node
3059         // (migrating the portals downward through the tree)
3060         for (portal = (portal_t *)node->portals;portal;portal = nextportal)
3061         {
3062                 if (portal->nodes[0] == portal->nodes[1])
3063                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: portal has same node on both sides(2)");
3064                 if (portal->nodes[0] == node)
3065                         side = 0;
3066                 else if (portal->nodes[1] == node)
3067                         side = 1;
3068                 else
3069                         Host_Error("Mod_Q1BSP_RecursiveNodePortals: mislinked portal");
3070                 nextportal = portal->next[side];
3071                 if (!portal->numpoints)
3072                         continue;
3073
3074                 other_node = portal->nodes[!side];
3075                 RemovePortalFromNodes(portal);
3076
3077                 // cut the portal into two portals, one on each side of the node plane
3078                 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);
3079
3080                 if (!numfrontpoints)
3081                 {
3082                         if (side == 0)
3083                                 AddPortalToNodes(portal, back, other_node);
3084                         else
3085                                 AddPortalToNodes(portal, other_node, back);
3086                         continue;
3087                 }
3088                 if (!numbackpoints)
3089                 {
3090                         if (side == 0)
3091                                 AddPortalToNodes(portal, front, other_node);
3092                         else
3093                                 AddPortalToNodes(portal, other_node, front);
3094                         continue;
3095                 }
3096
3097                 // the portal is split
3098                 splitportal = AllocPortal();
3099                 temp = splitportal->chain;
3100                 *splitportal = *portal;
3101                 splitportal->chain = temp;
3102                 for (i = 0;i < numbackpoints*3;i++)
3103                         splitportal->points[i] = backpoints[i];
3104                 splitportal->numpoints = numbackpoints;
3105                 for (i = 0;i < numfrontpoints*3;i++)
3106                         portal->points[i] = frontpoints[i];
3107                 portal->numpoints = numfrontpoints;
3108
3109                 if (side == 0)
3110                 {
3111                         AddPortalToNodes(portal, front, other_node);
3112                         AddPortalToNodes(splitportal, back, other_node);
3113                 }
3114                 else
3115                 {
3116                         AddPortalToNodes(portal, other_node, front);
3117                         AddPortalToNodes(splitportal, other_node, back);
3118                 }
3119         }
3120
3121         Mod_Q1BSP_RecursiveNodePortals(front);
3122         Mod_Q1BSP_RecursiveNodePortals(back);
3123 }
3124
3125 static void Mod_Q1BSP_MakePortals(void)
3126 {
3127         portalchain = NULL;
3128         Mod_Q1BSP_RecursiveNodePortals(loadmodel->brush.data_nodes);
3129         Mod_Q1BSP_FinalizePortals();
3130 }
3131
3132 static void Mod_Q1BSP_BuildLightmapUpdateChains(mempool_t *mempool, model_t *model)
3133 {
3134         int i, j, stylecounts[256], totalcount, remapstyles[256];
3135         msurface_t *surface;
3136         memset(stylecounts, 0, sizeof(stylecounts));
3137         for (i = 0;i < model->nummodelsurfaces;i++)
3138         {
3139                 surface = model->data_surfaces + model->firstmodelsurface + i;
3140                 for (j = 0;j < MAXLIGHTMAPS;j++)
3141                         stylecounts[surface->lightmapinfo->styles[j]]++;
3142         }
3143         totalcount = 0;
3144         model->brushq1.light_styles = 0;
3145         for (i = 0;i < 255;i++)
3146         {
3147                 if (stylecounts[i])
3148                 {
3149                         remapstyles[i] = model->brushq1.light_styles++;
3150                         totalcount += stylecounts[i] + 1;
3151                 }
3152         }
3153         if (!totalcount)
3154                 return;
3155         model->brushq1.light_style = (unsigned char *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(unsigned char));
3156         model->brushq1.light_stylevalue = (int *)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(int));
3157         model->brushq1.light_styleupdatechains = (msurface_t ***)Mem_Alloc(mempool, model->brushq1.light_styles * sizeof(msurface_t **));
3158         model->brushq1.light_styleupdatechainsbuffer = (msurface_t **)Mem_Alloc(mempool, totalcount * sizeof(msurface_t *));
3159         model->brushq1.light_styles = 0;
3160         for (i = 0;i < 255;i++)
3161                 if (stylecounts[i])
3162                         model->brushq1.light_style[model->brushq1.light_styles++] = i;
3163         j = 0;
3164         for (i = 0;i < model->brushq1.light_styles;i++)
3165         {
3166                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3167                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3168         }
3169         for (i = 0;i < model->nummodelsurfaces;i++)
3170         {
3171                 surface = model->data_surfaces + model->firstmodelsurface + i;
3172                 for (j = 0;j < MAXLIGHTMAPS;j++)
3173                         if (surface->lightmapinfo->styles[j] != 255)
3174                                 *model->brushq1.light_styleupdatechains[remapstyles[surface->lightmapinfo->styles[j]]]++ = surface;
3175         }
3176         j = 0;
3177         for (i = 0;i < model->brushq1.light_styles;i++)
3178         {
3179                 *model->brushq1.light_styleupdatechains[i] = NULL;
3180                 model->brushq1.light_styleupdatechains[i] = model->brushq1.light_styleupdatechainsbuffer + j;
3181                 j += stylecounts[model->brushq1.light_style[i]] + 1;
3182         }
3183 }
3184
3185 //Returns PVS data for a given point
3186 //(note: can return NULL)
3187 static unsigned char *Mod_Q1BSP_GetPVS(model_t *model, const vec3_t p)
3188 {
3189         mnode_t *node;
3190         node = model->brush.data_nodes;
3191         while (node->plane)
3192                 node = node->children[(node->plane->type < 3 ? p[node->plane->type] : DotProduct(p,node->plane->normal)) < node->plane->dist];
3193         if (((mleaf_t *)node)->clusterindex >= 0)
3194                 return model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3195         else
3196                 return NULL;
3197 }
3198
3199 static void Mod_Q1BSP_FatPVS_RecursiveBSPNode(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbytes, mnode_t *node)
3200 {
3201         while (node->plane)
3202         {
3203                 float d = PlaneDiff(org, node->plane);
3204                 if (d > radius)
3205                         node = node->children[0];
3206                 else if (d < -radius)
3207                         node = node->children[1];
3208                 else
3209                 {
3210                         // go down both sides
3211                         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, pvsbytes, node->children[0]);
3212                         node = node->children[1];
3213                 }
3214         }
3215         // if this leaf is in a cluster, accumulate the pvs bits
3216         if (((mleaf_t *)node)->clusterindex >= 0)
3217         {
3218                 int i;
3219                 unsigned char *pvs = model->brush.data_pvsclusters + ((mleaf_t *)node)->clusterindex * model->brush.num_pvsclusterbytes;
3220                 for (i = 0;i < pvsbytes;i++)
3221                         pvsbuffer[i] |= pvs[i];
3222         }
3223 }
3224
3225 //Calculates a PVS that is the inclusive or of all leafs within radius pixels
3226 //of the given point.
3227 static int Mod_Q1BSP_FatPVS(model_t *model, const vec3_t org, vec_t radius, unsigned char *pvsbuffer, int pvsbufferlength)
3228 {
3229         int bytes = model->brush.num_pvsclusterbytes;
3230         bytes = min(bytes, pvsbufferlength);
3231         if (r_novis.integer || !model->brush.num_pvsclusters || !Mod_Q1BSP_GetPVS(model, org))
3232         {
3233                 memset(pvsbuffer, 0xFF, bytes);
3234                 return bytes;
3235         }
3236         memset(pvsbuffer, 0, bytes);
3237         Mod_Q1BSP_FatPVS_RecursiveBSPNode(model, org, radius, pvsbuffer, bytes, model->brush.data_nodes);
3238         return bytes;
3239 }
3240
3241 static void Mod_Q1BSP_RoundUpToHullSize(model_t *cmodel, const vec3_t inmins, const vec3_t inmaxs, vec3_t outmins, vec3_t outmaxs)
3242 {
3243         vec3_t size;
3244         const hull_t *hull;
3245
3246         VectorSubtract(inmaxs, inmins, size);
3247         if (cmodel->brush.ismcbsp)
3248         {
3249                 if (size[0] < 3)
3250                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3251                 else if (size[2] < 48) // pick the nearest of 40 or 56
3252                         hull = &cmodel->brushq1.hulls[2]; // 16x16x40
3253                 else
3254                         hull = &cmodel->brushq1.hulls[1]; // 16x16x56
3255         }
3256         else if (cmodel->brush.ishlbsp)
3257         {
3258                 if (size[0] < 3)
3259                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3260                 else if (size[0] <= 32)
3261                 {
3262                         if (size[2] < 54) // pick the nearest of 36 or 72
3263                                 hull = &cmodel->brushq1.hulls[3]; // 32x32x36
3264                         else
3265                                 hull = &cmodel->brushq1.hulls[1]; // 32x32x72
3266                 }
3267                 else
3268                         hull = &cmodel->brushq1.hulls[2]; // 64x64x64
3269         }
3270         else
3271         {
3272                 if (size[0] < 3)
3273                         hull = &cmodel->brushq1.hulls[0]; // 0x0x0
3274                 else if (size[0] <= 32)
3275                         hull = &cmodel->brushq1.hulls[1]; // 32x32x56
3276                 else
3277                         hull = &cmodel->brushq1.hulls[2]; // 64x64x88
3278         }
3279         VectorCopy(inmins, outmins);
3280         VectorAdd(inmins, hull->clip_size, outmaxs);
3281 }
3282
3283 void Mod_Q1BSP_Load(model_t *mod, void *buffer, void *bufferend)
3284 {
3285         int i, j, k;
3286         dheader_t *header;
3287         dmodel_t *bm;
3288         mempool_t *mainmempool;
3289         float dist, modelyawradius, modelradius, *vec;
3290         msurface_t *surface;
3291         int numshadowmeshtriangles;
3292         dheader_t _header;
3293         hullinfo_t hullinfo;
3294
3295         mod->type = mod_brushq1;
3296
3297         if (!memcmp (buffer, "MCBSPpad", 8))
3298         {
3299                 unsigned char   *index;
3300
3301                 mod->brush.ismcbsp = true;
3302                 mod->brush.ishlbsp = false;
3303
3304                 mod_base = (unsigned char*)buffer;
3305
3306                 index = mod_base;
3307                 index += 8;
3308                 i = SB_ReadInt (&index);
3309                 if (i != MCBSPVERSION)
3310                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i)", mod->name, i, MCBSPVERSION);
3311
3312         // read hull info
3313                 hullinfo.numhulls = LittleLong(*(int*)index); index += 4;
3314                 hullinfo.filehulls = hullinfo.numhulls;
3315                 VectorClear (hullinfo.hullsizes[0][0]);
3316                 VectorClear (hullinfo.hullsizes[0][1]);
3317                 for (i = 1; i < hullinfo.numhulls; i++)
3318                 {
3319                         hullinfo.hullsizes[i][0][0] = SB_ReadFloat (&index);
3320                         hullinfo.hullsizes[i][0][1] = SB_ReadFloat (&index);
3321                         hullinfo.hullsizes[i][0][2] = SB_ReadFloat (&index);
3322                         hullinfo.hullsizes[i][1][0] = SB_ReadFloat (&index);
3323                         hullinfo.hullsizes[i][1][1] = SB_ReadFloat (&index);
3324                         hullinfo.hullsizes[i][1][2] = SB_ReadFloat (&index);
3325                 }
3326
3327         // read lumps
3328                 _header.version = 0;
3329                 for (i = 0; i < HEADER_LUMPS; i++)
3330                 {
3331                         _header.lumps[i].fileofs = SB_ReadInt (&index);
3332                         _header.lumps[i].filelen = SB_ReadInt (&index);
3333                 }
3334
3335                 header = &_header;
3336         }
3337         else
3338         {
3339                 header = (dheader_t *)buffer;
3340
3341                 i = LittleLong(header->version);
3342                 if (i != BSPVERSION && i != 30)
3343                         Host_Error("Mod_Q1BSP_Load: %s has wrong version number(%i should be %i(Quake) or 30(HalfLife)", mod->name, i, BSPVERSION);
3344                 mod->brush.ishlbsp = i == 30;
3345                 mod->brush.ismcbsp = false;
3346
3347         // fill in hull info
3348                 VectorClear (hullinfo.hullsizes[0][0]);
3349                 VectorClear (hullinfo.hullsizes[0][1]);
3350                 if (mod->brush.ishlbsp)
3351                 {
3352                         hullinfo.numhulls = 4;
3353                         hullinfo.filehulls = 4;
3354                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -36);
3355                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 36);
3356                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -32);
3357                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 32);
3358                         VectorSet (hullinfo.hullsizes[3][0], -16, -16, -18);
3359                         VectorSet (hullinfo.hullsizes[3][1], 16, 16, 18);
3360                 }
3361                 else
3362                 {
3363                         hullinfo.numhulls = 3;
3364                         hullinfo.filehulls = 4;
3365                         VectorSet (hullinfo.hullsizes[1][0], -16, -16, -24);
3366                         VectorSet (hullinfo.hullsizes[1][1], 16, 16, 32);
3367                         VectorSet (hullinfo.hullsizes[2][0], -32, -32, -24);
3368                         VectorSet (hullinfo.hullsizes[2][1], 32, 32, 64);
3369                 }
3370
3371         // read lumps
3372                 mod_base = (unsigned char*)buffer;
3373                 for (i = 0; i < HEADER_LUMPS; i++)
3374                 {
3375                         header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
3376                         header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
3377                 }
3378         }
3379
3380         mod->soundfromcenter = true;
3381         mod->TraceBox = Mod_Q1BSP_TraceBox;
3382         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
3383         mod->brush.SuperContentsFromNativeContents = Mod_Q1BSP_SuperContentsFromNativeContents;
3384         mod->brush.NativeContentsFromSuperContents = Mod_Q1BSP_NativeContentsFromSuperContents;
3385         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
3386         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
3387         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
3388         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
3389         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
3390         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
3391         mod->brush.LightPoint = Mod_Q1BSP_LightPoint;
3392         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
3393         mod->brush.AmbientSoundLevelsForPoint = Mod_Q1BSP_AmbientSoundLevelsForPoint;
3394         mod->brush.RoundUpToHullSize = Mod_Q1BSP_RoundUpToHullSize;
3395         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
3396
3397         if (loadmodel->isworldmodel)
3398         {
3399                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
3400                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
3401         }
3402
3403 // load into heap
3404
3405         // store which lightmap format to use
3406         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
3407
3408         mod->brush.qw_md4sum = 0;
3409         mod->brush.qw_md4sum2 = 0;
3410         for (i = 0;i < HEADER_LUMPS;i++)
3411         {
3412                 if (i == LUMP_ENTITIES)
3413                         continue;
3414                 mod->brush.qw_md4sum ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3415                 if (i == LUMP_VISIBILITY || i == LUMP_LEAFS || i == LUMP_NODES)
3416                         continue;
3417                 mod->brush.qw_md4sum2 ^= LittleLong(Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen));
3418         }
3419
3420         Mod_Q1BSP_LoadEntities(&header->lumps[LUMP_ENTITIES]);
3421         Mod_Q1BSP_LoadVertexes(&header->lumps[LUMP_VERTEXES]);
3422         Mod_Q1BSP_LoadEdges(&header->lumps[LUMP_EDGES]);
3423         Mod_Q1BSP_LoadSurfedges(&header->lumps[LUMP_SURFEDGES]);
3424         Mod_Q1BSP_LoadTextures(&header->lumps[LUMP_TEXTURES]);
3425         Mod_Q1BSP_LoadLighting(&header->lumps[LUMP_LIGHTING]);
3426         Mod_Q1BSP_LoadPlanes(&header->lumps[LUMP_PLANES]);
3427         Mod_Q1BSP_LoadTexinfo(&header->lumps[LUMP_TEXINFO]);
3428         Mod_Q1BSP_LoadFaces(&header->lumps[LUMP_FACES]);
3429         Mod_Q1BSP_LoadLeaffaces(&header->lumps[LUMP_MARKSURFACES]);
3430         Mod_Q1BSP_LoadVisibility(&header->lumps[LUMP_VISIBILITY]);
3431         // load submodels before leafs because they contain the number of vis leafs
3432         Mod_Q1BSP_LoadSubmodels(&header->lumps[LUMP_MODELS], &hullinfo);
3433         Mod_Q1BSP_LoadLeafs(&header->lumps[LUMP_LEAFS]);
3434         Mod_Q1BSP_LoadNodes(&header->lumps[LUMP_NODES]);
3435         Mod_Q1BSP_LoadClipnodes(&header->lumps[LUMP_CLIPNODES], &hullinfo);
3436
3437         // check if the map supports transparent water rendering
3438         loadmodel->brush.supportwateralpha = Mod_Q1BSP_CheckWaterAlphaSupport();
3439
3440         if (mod->brushq1.data_compressedpvs)
3441                 Mem_Free(mod->brushq1.data_compressedpvs);
3442         mod->brushq1.data_compressedpvs = NULL;
3443         mod->brushq1.num_compressedpvs = 0;
3444
3445         Mod_Q1BSP_MakeHull0();
3446         Mod_Q1BSP_MakePortals();
3447
3448         mod->numframes = 2;             // regular and alternate animation
3449         mod->numskins = 1;
3450
3451         mainmempool = mod->mempool;
3452
3453         // make a single combined shadow mesh to allow optimized shadow volume creation
3454         numshadowmeshtriangles = 0;
3455         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3456         {
3457                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
3458                 numshadowmeshtriangles += surface->num_triangles;
3459         }
3460         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
3461         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
3462                 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));
3463         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
3464         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
3465
3466         if (loadmodel->brush.numsubmodels)
3467                 loadmodel->brush.submodels = (model_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brush.numsubmodels * sizeof(model_t *));
3468
3469         if (loadmodel->isworldmodel)
3470         {
3471                 // clear out any stale submodels or worldmodels lying around
3472                 // if we did this clear before now, an error might abort loading and
3473                 // leave things in a bad state
3474                 Mod_RemoveStaleWorldModels(loadmodel);
3475         }
3476
3477         // LordHavoc: to clear the fog around the original quake submodel code, I
3478         // will explain:
3479         // first of all, some background info on the submodels:
3480         // model 0 is the map model (the world, named maps/e1m1.bsp for example)
3481         // model 1 and higher are submodels (doors and the like, named *1, *2, etc)
3482         // now the weird for loop itself:
3483         // the loop functions in an odd way, on each iteration it sets up the
3484         // current 'mod' model (which despite the confusing code IS the model of
3485         // the number i), at the end of the loop it duplicates the model to become
3486         // the next submodel, and loops back to set up the new submodel.
3487
3488         // LordHavoc: now the explanation of my sane way (which works identically):
3489         // set up the world model, then on each submodel copy from the world model
3490         // and set up the submodel with the respective model info.
3491         for (i = 0;i < mod->brush.numsubmodels;i++)
3492         {
3493                 // LordHavoc: this code was originally at the end of this loop, but
3494                 // has been transformed to something more readable at the start here.
3495
3496                 if (i > 0)
3497                 {
3498                         char name[10];
3499                         // LordHavoc: only register submodels if it is the world
3500                         // (prevents external bsp models from replacing world submodels with
3501                         //  their own)
3502                         if (!loadmodel->isworldmodel)
3503                                 continue;
3504                         // duplicate the basic information
3505                         sprintf(name, "*%i", i);
3506                         mod = Mod_FindName(name);
3507                         // copy the base model to this one
3508                         *mod = *loadmodel;
3509                         // rename the clone back to its proper name
3510                         strlcpy(mod->name, name, sizeof(mod->name));
3511                         // textures and memory belong to the main model
3512                         mod->texturepool = NULL;
3513                         mod->mempool = NULL;
3514                 }
3515
3516                 mod->brush.submodel = i;
3517
3518                 if (loadmodel->brush.submodels)
3519                         loadmodel->brush.submodels[i] = mod;
3520
3521                 bm = &mod->brushq1.submodels[i];
3522
3523                 mod->brushq1.hulls[0].firstclipnode = bm->headnode[0];
3524                 for (j=1 ; j<MAX_MAP_HULLS ; j++)
3525                 {
3526                         mod->brushq1.hulls[j].firstclipnode = bm->headnode[j];
3527                         mod->brushq1.hulls[j].lastclipnode = mod->brushq1.numclipnodes - 1;
3528                 }
3529
3530                 mod->firstmodelsurface = bm->firstface;
3531                 mod->nummodelsurfaces = bm->numfaces;
3532
3533                 // make the model surface list (used by shadowing/lighting)
3534                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
3535                 for (j = 0;j < mod->nummodelsurfaces;j++)
3536                         mod->surfacelist[j] = mod->firstmodelsurface + j;
3537
3538                 // this gets altered below if sky is used
3539                 mod->DrawSky = NULL;
3540                 mod->Draw = R_Q1BSP_Draw;
3541                 mod->GetLightInfo = R_Q1BSP_GetLightInfo;
3542                 mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
3543                 mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
3544                 mod->DrawLight = R_Q1BSP_DrawLight;
3545                 if (i != 0)
3546                 {
3547                         mod->brush.TraceLineOfSight = NULL;
3548                         mod->brush.GetPVS = NULL;
3549                         mod->brush.FatPVS = NULL;
3550                         mod->brush.BoxTouchingPVS = NULL;
3551                         mod->brush.BoxTouchingLeafPVS = NULL;
3552                         mod->brush.BoxTouchingVisibleLeafs = NULL;
3553                         mod->brush.FindBoxClusters = NULL;
3554                         mod->brush.LightPoint = NULL;
3555                         mod->brush.AmbientSoundLevelsForPoint = NULL;
3556                 }
3557                 Mod_Q1BSP_BuildLightmapUpdateChains(loadmodel->mempool, mod);
3558                 if (mod->nummodelsurfaces)
3559                 {
3560                         // LordHavoc: calculate bmodel bounding box rather than trusting what it says
3561                         mod->normalmins[0] = mod->normalmins[1] = mod->normalmins[2] = 1000000000.0f;
3562                         mod->normalmaxs[0] = mod->normalmaxs[1] = mod->normalmaxs[2] = -1000000000.0f;
3563                         modelyawradius = 0;
3564                         modelradius = 0;
3565                         for (j = 0, surface = &mod->data_surfaces[mod->firstmodelsurface];j < mod->nummodelsurfaces;j++, surface++)
3566                         {
3567                                 // we only need to have a drawsky function if it is used(usually only on world model)
3568                                 if (surface->texture->basematerialflags & MATERIALFLAG_SKY)
3569                                         mod->DrawSky = R_Q1BSP_DrawSky;
3570                                 // calculate bounding shapes
3571                                 for (k = 0, vec = (loadmodel->surfmesh.data_vertex3f + 3 * surface->num_firstvertex);k < surface->num_vertices;k++, vec += 3)
3572                                 {
3573                                         if (mod->normalmins[0] > vec[0]) mod->normalmins[0] = vec[0];
3574                                         if (mod->normalmins[1] > vec[1]) mod->normalmins[1] = vec[1];
3575                                         if (mod->normalmins[2] > vec[2]) mod->normalmins[2] = vec[2];
3576                                         if (mod->normalmaxs[0] < vec[0]) mod->normalmaxs[0] = vec[0];
3577                                         if (mod->normalmaxs[1] < vec[1]) mod->normalmaxs[1] = vec[1];
3578                                         if (mod->normalmaxs[2] < vec[2]) mod->normalmaxs[2] = vec[2];
3579                                         dist = vec[0]*vec[0]+vec[1]*vec[1];
3580                                         if (modelyawradius < dist)
3581                                                 modelyawradius = dist;
3582                                         dist += vec[2]*vec[2];
3583                                         if (modelradius < dist)
3584                                                 modelradius = dist;
3585                                 }
3586                         }
3587                         modelyawradius = sqrt(modelyawradius);
3588                         modelradius = sqrt(modelradius);
3589                         mod->yawmins[0] = mod->yawmins[1] = - (mod->yawmaxs[0] = mod->yawmaxs[1] = modelyawradius);
3590                         mod->yawmins[2] = mod->normalmins[2];
3591                         mod->yawmaxs[2] = mod->normalmaxs[2];
3592                         mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
3593                         mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
3594                         mod->radius = modelradius;
3595                         mod->radius2 = modelradius * modelradius;
3596                 }
3597                 else
3598                 {
3599                         // LordHavoc: empty submodel(lacrima.bsp has such a glitch)
3600                         Con_Printf("warning: empty submodel *%i in %s\n", i+1, loadmodel->name);
3601                 }
3602                 //mod->brushq1.num_visleafs = bm->visleafs;
3603         }
3604
3605         Mod_Q1BSP_LoadMapBrushes();
3606
3607         //Mod_Q1BSP_ProcessLightList();
3608
3609         if (developer.integer >= 10)
3610                 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);
3611 }
3612
3613 static void Mod_Q2BSP_LoadEntities(lump_t *l)
3614 {
3615 }
3616
3617 static void Mod_Q2BSP_LoadPlanes(lump_t *l)
3618 {
3619 /*
3620         d_t *in;
3621         m_t *out;
3622         int i, count;
3623
3624         in = (void *)(mod_base + l->fileofs);
3625         if (l->filelen % sizeof(*in))
3626                 Host_Error("Mod_Q2BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
3627         count = l->filelen / sizeof(*in);
3628         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3629
3630         loadmodel-> = out;
3631         loadmodel->num = count;
3632
3633         for (i = 0;i < count;i++, in++, out++)
3634         {
3635         }
3636 */
3637 }
3638
3639 static void Mod_Q2BSP_LoadVertices(lump_t *l)
3640 {
3641 /*
3642         d_t *in;
3643         m_t *out;
3644         int i, count;
3645
3646         in = (void *)(mod_base + l->fileofs);
3647         if (l->filelen % sizeof(*in))
3648                 Host_Error("Mod_Q2BSP_LoadVertices: funny lump size in %s",loadmodel->name);
3649         count = l->filelen / sizeof(*in);
3650         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3651
3652         loadmodel-> = out;
3653         loadmodel->num = count;
3654
3655         for (i = 0;i < count;i++, in++, out++)
3656         {
3657         }
3658 */
3659 }
3660
3661 static void Mod_Q2BSP_LoadVisibility(lump_t *l)
3662 {
3663 /*
3664         d_t *in;
3665         m_t *out;
3666         int i, count;
3667
3668         in = (void *)(mod_base + l->fileofs);
3669         if (l->filelen % sizeof(*in))
3670                 Host_Error("Mod_Q2BSP_LoadVisibility: funny lump size in %s",loadmodel->name);
3671         count = l->filelen / sizeof(*in);
3672         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3673
3674         loadmodel-> = out;
3675         loadmodel->num = count;
3676
3677         for (i = 0;i < count;i++, in++, out++)
3678         {
3679         }
3680 */
3681 }
3682
3683 static void Mod_Q2BSP_LoadNodes(lump_t *l)
3684 {
3685 /*
3686         d_t *in;
3687         m_t *out;
3688         int i, count;
3689
3690         in = (void *)(mod_base + l->fileofs);
3691         if (l->filelen % sizeof(*in))
3692                 Host_Error("Mod_Q2BSP_LoadNodes: funny lump size in %s",loadmodel->name);
3693         count = l->filelen / sizeof(*in);
3694         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3695
3696         loadmodel-> = out;
3697         loadmodel->num = count;
3698
3699         for (i = 0;i < count;i++, in++, out++)
3700         {
3701         }
3702 */
3703 }
3704
3705 static void Mod_Q2BSP_LoadTexInfo(lump_t *l)
3706 {
3707 /*
3708         d_t *in;
3709         m_t *out;
3710         int i, count;
3711
3712         in = (void *)(mod_base + l->fileofs);
3713         if (l->filelen % sizeof(*in))
3714                 Host_Error("Mod_Q2BSP_LoadTexInfo: funny lump size in %s",loadmodel->name);
3715         count = l->filelen / sizeof(*in);
3716         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3717
3718         loadmodel-> = out;
3719         loadmodel->num = count;
3720
3721         for (i = 0;i < count;i++, in++, out++)
3722         {
3723         }
3724 */
3725 }
3726
3727 static void Mod_Q2BSP_LoadFaces(lump_t *l)
3728 {
3729 /*
3730         d_t *in;
3731         m_t *out;
3732         int i, count;
3733
3734         in = (void *)(mod_base + l->fileofs);
3735         if (l->filelen % sizeof(*in))
3736                 Host_Error("Mod_Q2BSP_LoadFaces: funny lump size in %s",loadmodel->name);
3737         count = l->filelen / sizeof(*in);
3738         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3739
3740         loadmodel-> = out;
3741         loadmodel->num = count;
3742
3743         for (i = 0;i < count;i++, in++, out++)
3744         {
3745         }
3746 */
3747 }
3748
3749 static void Mod_Q2BSP_LoadLighting(lump_t *l)
3750 {
3751 /*
3752         d_t *in;
3753         m_t *out;
3754         int i, count;
3755
3756         in = (void *)(mod_base + l->fileofs);
3757         if (l->filelen % sizeof(*in))
3758                 Host_Error("Mod_Q2BSP_LoadLighting: funny lump size in %s",loadmodel->name);
3759         count = l->filelen / sizeof(*in);
3760         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3761
3762         loadmodel-> = out;
3763         loadmodel->num = count;
3764
3765         for (i = 0;i < count;i++, in++, out++)
3766         {
3767         }
3768 */
3769 }
3770
3771 static void Mod_Q2BSP_LoadLeafs(lump_t *l)
3772 {
3773 /*
3774         d_t *in;
3775         m_t *out;
3776         int i, count;
3777
3778         in = (void *)(mod_base + l->fileofs);
3779         if (l->filelen % sizeof(*in))
3780                 Host_Error("Mod_Q2BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
3781         count = l->filelen / sizeof(*in);
3782         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3783
3784         loadmodel-> = out;
3785         loadmodel->num = count;
3786
3787         for (i = 0;i < count;i++, in++, out++)
3788         {
3789         }
3790 */
3791 }
3792
3793 static void Mod_Q2BSP_LoadLeafFaces(lump_t *l)
3794 {
3795 /*
3796         d_t *in;
3797         m_t *out;
3798         int i, count;
3799
3800         in = (void *)(mod_base + l->fileofs);
3801         if (l->filelen % sizeof(*in))
3802                 Host_Error("Mod_Q2BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
3803         count = l->filelen / sizeof(*in);
3804         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3805
3806         loadmodel-> = out;
3807         loadmodel->num = count;
3808
3809         for (i = 0;i < count;i++, in++, out++)
3810         {
3811         }
3812 */
3813 }
3814
3815 static void Mod_Q2BSP_LoadLeafBrushes(lump_t *l)
3816 {
3817 /*
3818         d_t *in;
3819         m_t *out;
3820         int i, count;
3821
3822         in = (void *)(mod_base + l->fileofs);
3823         if (l->filelen % sizeof(*in))
3824                 Host_Error("Mod_Q2BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
3825         count = l->filelen / sizeof(*in);
3826         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3827
3828         loadmodel-> = out;
3829         loadmodel->num = count;
3830
3831         for (i = 0;i < count;i++, in++, out++)
3832         {
3833         }
3834 */
3835 }
3836
3837 static void Mod_Q2BSP_LoadEdges(lump_t *l)
3838 {
3839 /*
3840         d_t *in;
3841         m_t *out;
3842         int i, count;
3843
3844         in = (void *)(mod_base + l->fileofs);
3845         if (l->filelen % sizeof(*in))
3846                 Host_Error("Mod_Q2BSP_LoadEdges: funny lump size in %s",loadmodel->name);
3847         count = l->filelen / sizeof(*in);
3848         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3849
3850         loadmodel-> = out;
3851         loadmodel->num = count;
3852
3853         for (i = 0;i < count;i++, in++, out++)
3854         {
3855         }
3856 */
3857 }
3858
3859 static void Mod_Q2BSP_LoadSurfEdges(lump_t *l)
3860 {
3861 /*
3862         d_t *in;
3863         m_t *out;
3864         int i, count;
3865
3866         in = (void *)(mod_base + l->fileofs);
3867         if (l->filelen % sizeof(*in))
3868                 Host_Error("Mod_Q2BSP_LoadSurfEdges: funny lump size in %s",loadmodel->name);
3869         count = l->filelen / sizeof(*in);
3870         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3871
3872         loadmodel-> = out;
3873         loadmodel->num = count;
3874
3875         for (i = 0;i < count;i++, in++, out++)
3876         {
3877         }
3878 */
3879 }
3880
3881 static void Mod_Q2BSP_LoadBrushes(lump_t *l)
3882 {
3883 /*
3884         d_t *in;
3885         m_t *out;
3886         int i, count;
3887
3888         in = (void *)(mod_base + l->fileofs);
3889         if (l->filelen % sizeof(*in))
3890                 Host_Error("Mod_Q2BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
3891         count = l->filelen / sizeof(*in);
3892         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3893
3894         loadmodel-> = out;
3895         loadmodel->num = count;
3896
3897         for (i = 0;i < count;i++, in++, out++)
3898         {
3899         }
3900 */
3901 }
3902
3903 static void Mod_Q2BSP_LoadBrushSides(lump_t *l)
3904 {
3905 /*
3906         d_t *in;
3907         m_t *out;
3908         int i, count;
3909
3910         in = (void *)(mod_base + l->fileofs);
3911         if (l->filelen % sizeof(*in))
3912                 Host_Error("Mod_Q2BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
3913         count = l->filelen / sizeof(*in);
3914         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3915
3916         loadmodel-> = out;
3917         loadmodel->num = count;
3918
3919         for (i = 0;i < count;i++, in++, out++)
3920         {
3921         }
3922 */
3923 }
3924
3925 static void Mod_Q2BSP_LoadAreas(lump_t *l)
3926 {
3927 /*
3928         d_t *in;
3929         m_t *out;
3930         int i, count;
3931
3932         in = (void *)(mod_base + l->fileofs);
3933         if (l->filelen % sizeof(*in))
3934                 Host_Error("Mod_Q2BSP_LoadAreas: funny lump size in %s",loadmodel->name);
3935         count = l->filelen / sizeof(*in);
3936         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3937
3938         loadmodel-> = out;
3939         loadmodel->num = count;
3940
3941         for (i = 0;i < count;i++, in++, out++)
3942         {
3943         }
3944 */
3945 }
3946
3947 static void Mod_Q2BSP_LoadAreaPortals(lump_t *l)
3948 {
3949 /*
3950         d_t *in;
3951         m_t *out;
3952         int i, count;
3953
3954         in = (void *)(mod_base + l->fileofs);
3955         if (l->filelen % sizeof(*in))
3956                 Host_Error("Mod_Q2BSP_LoadAreaPortals: funny lump size in %s",loadmodel->name);
3957         count = l->filelen / sizeof(*in);
3958         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3959
3960         loadmodel-> = out;
3961         loadmodel->num = count;
3962
3963         for (i = 0;i < count;i++, in++, out++)
3964         {
3965         }
3966 */
3967 }
3968
3969 static void Mod_Q2BSP_LoadModels(lump_t *l)
3970 {
3971 /*
3972         d_t *in;
3973         m_t *out;
3974         int i, count;
3975
3976         in = (void *)(mod_base + l->fileofs);
3977         if (l->filelen % sizeof(*in))
3978                 Host_Error("Mod_Q2BSP_LoadModels: funny lump size in %s",loadmodel->name);
3979         count = l->filelen / sizeof(*in);
3980         out = Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
3981
3982         loadmodel-> = out;
3983         loadmodel->num = count;
3984
3985         for (i = 0;i < count;i++, in++, out++)
3986         {
3987         }
3988 */
3989 }
3990
3991 void static Mod_Q2BSP_Load(model_t *mod, void *buffer, void *bufferend)
3992 {
3993         int i;
3994         q2dheader_t *header;
3995
3996         Host_Error("Mod_Q2BSP_Load: not yet implemented");
3997
3998         mod->type = mod_brushq2;
3999
4000         header = (q2dheader_t *)buffer;
4001
4002         i = LittleLong(header->version);
4003         if (i != Q2BSPVERSION)
4004                 Host_Error("Mod_Q2BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q2BSPVERSION);
4005         mod->brush.ishlbsp = false;
4006         mod->brush.ismcbsp = false;
4007         if (loadmodel->isworldmodel)
4008         {
4009                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
4010                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
4011         }
4012
4013         mod_base = (unsigned char *)header;
4014
4015         // swap all the lumps
4016         for (i = 0;i < (int) sizeof(*header) / 4;i++)
4017                 ((int *)header)[i] = LittleLong(((int *)header)[i]);
4018
4019         // store which lightmap format to use
4020         mod->brushq1.lightmaprgba = r_lightmaprgba.integer;
4021
4022         mod->brush.qw_md4sum = 0;
4023         mod->brush.qw_md4sum2 = 0;
4024         for (i = 0;i < Q2HEADER_LUMPS;i++)
4025         {
4026                 if (i == Q2LUMP_ENTITIES)
4027                         continue;
4028                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4029                 if (i == Q2LUMP_VISIBILITY || i == Q2LUMP_LEAFS || i == Q2LUMP_NODES)
4030                         continue;
4031                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
4032         }
4033
4034         Mod_Q2BSP_LoadEntities(&header->lumps[Q2LUMP_ENTITIES]);
4035         Mod_Q2BSP_LoadPlanes(&header->lumps[Q2LUMP_PLANES]);
4036         Mod_Q2BSP_LoadVertices(&header->lumps[Q2LUMP_VERTEXES]);
4037         Mod_Q2BSP_LoadVisibility(&header->lumps[Q2LUMP_VISIBILITY]);
4038         Mod_Q2BSP_LoadNodes(&header->lumps[Q2LUMP_NODES]);
4039         Mod_Q2BSP_LoadTexInfo(&header->lumps[Q2LUMP_TEXINFO]);
4040         Mod_Q2BSP_LoadFaces(&header->lumps[Q2LUMP_FACES]);
4041         Mod_Q2BSP_LoadLighting(&header->lumps[Q2LUMP_LIGHTING]);
4042         Mod_Q2BSP_LoadLeafs(&header->lumps[Q2LUMP_LEAFS]);
4043         Mod_Q2BSP_LoadLeafFaces(&header->lumps[Q2LUMP_LEAFFACES]);
4044         Mod_Q2BSP_LoadLeafBrushes(&header->lumps[Q2LUMP_LEAFBRUSHES]);
4045         Mod_Q2BSP_LoadEdges(&header->lumps[Q2LUMP_EDGES]);
4046         Mod_Q2BSP_LoadSurfEdges(&header->lumps[Q2LUMP_SURFEDGES]);
4047         Mod_Q2BSP_LoadBrushes(&header->lumps[Q2LUMP_BRUSHES]);
4048         Mod_Q2BSP_LoadBrushSides(&header->lumps[Q2LUMP_BRUSHSIDES]);
4049         Mod_Q2BSP_LoadAreas(&header->lumps[Q2LUMP_AREAS]);
4050         Mod_Q2BSP_LoadAreaPortals(&header->lumps[Q2LUMP_AREAPORTALS]);
4051         // LordHavoc: must go last because this makes the submodels
4052         Mod_Q2BSP_LoadModels(&header->lumps[Q2LUMP_MODELS]);
4053 }
4054
4055 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents);
4056 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents);
4057
4058 static void Mod_Q3BSP_LoadEntities(lump_t *l)
4059 {
4060         const char *data;
4061         char key[128], value[MAX_INPUTLINE];
4062         float v[3];
4063         loadmodel->brushq3.num_lightgrid_cellsize[0] = 64;
4064         loadmodel->brushq3.num_lightgrid_cellsize[1] = 64;
4065         loadmodel->brushq3.num_lightgrid_cellsize[2] = 128;
4066         if (!l->filelen)
4067                 return;
4068         loadmodel->brush.entities = (char *)Mem_Alloc(loadmodel->mempool, l->filelen);
4069         memcpy(loadmodel->brush.entities, mod_base + l->fileofs, l->filelen);
4070         data = loadmodel->brush.entities;
4071         // some Q3 maps override the lightgrid_cellsize with a worldspawn key
4072         if (data && COM_ParseTokenConsole(&data) && com_token[0] == '{')
4073         {
4074                 while (1)
4075                 {
4076                         if (!COM_ParseTokenConsole(&data))
4077                                 break; // error
4078                         if (com_token[0] == '}')
4079                                 break; // end of worldspawn
4080                         if (com_token[0] == '_')
4081                                 strlcpy(key, com_token + 1, sizeof(key));
4082                         else
4083                                 strlcpy(key, com_token, sizeof(key));
4084                         while (key[strlen(key)-1] == ' ') // remove trailing spaces
4085                                 key[strlen(key)-1] = 0;
4086                         if (!COM_ParseTokenConsole(&data))
4087                                 break; // error
4088                         strlcpy(value, com_token, sizeof(value));
4089                         if (!strcmp("gridsize", key))
4090                         {
4091                                 if (sscanf(value, "%f %f %f", &v[0], &v[1], &v[2]) == 3 && v[0] != 0 && v[1] != 0 && v[2] != 0)
4092                                         VectorCopy(v, loadmodel->brushq3.num_lightgrid_cellsize);
4093                         }
4094                 }
4095         }
4096 }
4097
4098 // FIXME: make MAXSHADERS dynamic
4099 #define Q3SHADER_MAXSHADERS 4096
4100 #define Q3SHADER_MAXLAYERS 8
4101
4102 typedef struct q3shaderinfo_layer_s
4103 {
4104         int alphatest;
4105         int clampmap;
4106         float framerate;
4107         int numframes;
4108         char texturename[TEXTURE_MAXFRAMES][Q3PATHLENGTH];
4109         int blendfunc[2];
4110         qboolean rgbgenvertex;
4111         qboolean alphagenvertex;
4112 }
4113 q3shaderinfo_layer_t;
4114
4115 typedef struct q3shaderinfo_s
4116 {
4117         char name[Q3PATHLENGTH];
4118         int surfaceparms;
4119         int textureflags;
4120         int numlayers;
4121         qboolean lighting;
4122         qboolean vertexalpha;
4123         qboolean textureblendalpha;
4124         q3shaderinfo_layer_t *primarylayer, *backgroundlayer;
4125         q3shaderinfo_layer_t layers[Q3SHADER_MAXLAYERS];
4126         char skyboxname[Q3PATHLENGTH];
4127 }
4128 q3shaderinfo_t;
4129
4130 int q3shaders_numshaders;
4131 q3shaderinfo_t q3shaders_shaders[Q3SHADER_MAXSHADERS];
4132
4133 static void Mod_Q3BSP_LoadShaders(void)
4134 {
4135         int j;
4136         int fileindex;
4137         fssearch_t *search;
4138         char *f;
4139         const char *text;
4140         q3shaderinfo_t *shader;
4141         q3shaderinfo_layer_t *layer;
4142         int numparameters;
4143         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
4144         search = FS_Search("scripts/*.shader", true, false);
4145         if (!search)
4146                 return;
4147         q3shaders_numshaders = 0;
4148         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
4149         {
4150                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
4151                 if (!f)
4152                         continue;
4153                 while (COM_ParseToken(&text, false))
4154                 {
4155                         if (q3shaders_numshaders >= Q3SHADER_MAXSHADERS)
4156                         {
4157                                 Con_Printf("Mod_Q3BSP_LoadShaders: too many shaders!\n");
4158                                 break;
4159                         }
4160                         shader = q3shaders_shaders + q3shaders_numshaders++;
4161                         memset(shader, 0, sizeof(*shader));
4162                         strlcpy(shader->name, com_token, sizeof(shader->name));
4163                         if (!COM_ParseToken(&text, false) || strcasecmp(com_token, "{"))
4164                         {
4165                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
4166                                 break;
4167                         }
4168                         while (COM_ParseToken(&text, false))
4169                         {
4170                                 if (!strcasecmp(com_token, "}"))
4171                                         break;
4172                                 if (!strcasecmp(com_token, "{"))
4173                                 {
4174                                         if (shader->numlayers < Q3SHADER_MAXLAYERS)
4175                                         {
4176                                                 layer = shader->layers + shader->numlayers++;
4177                                                 layer->rgbgenvertex = false;
4178                                                 layer->alphagenvertex = false;
4179                                                 layer->blendfunc[0] = GL_ONE;
4180                                                 layer->blendfunc[1] = GL_ZERO;
4181                                         }
4182                                         else
4183                                                 layer = NULL;
4184                                         while (COM_ParseToken(&text, false))
4185                                         {
4186                                                 if (!strcasecmp(com_token, "}"))
4187                                                         break;
4188                                                 if (!strcasecmp(com_token, "\n"))
4189                                                         continue;
4190                                                 if (layer == NULL)
4191                                                         continue;
4192                                                 numparameters = 0;
4193                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4194                                                 {
4195                                                         if (j < TEXTURE_MAXFRAMES + 4)
4196                                                         {
4197                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4198                                                                 numparameters = j + 1;
4199                                                         }
4200                                                         if (!COM_ParseToken(&text, true))
4201                                                                 break;
4202                                                 }
4203                                                 if (developer.integer >= 100)
4204                                                 {
4205                                                         Con_Printf("%s %i: ", shader->name, shader->numlayers - 1);
4206                                                         for (j = 0;j < numparameters;j++)
4207                                                                 Con_Printf(" %s", parameter[j]);
4208                                                         Con_Print("\n");
4209                                                 }
4210                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
4211                                                 {
4212                                                         if (numparameters == 2)
4213                                                         {
4214                                                                 if (!strcasecmp(parameter[1], "add"))
4215                                                                 {
4216                                                                         layer->blendfunc[0] = GL_ONE;
4217                                                                         layer->blendfunc[1] = GL_ONE;
4218                                                                 }
4219                                                                 else if (!strcasecmp(parameter[1], "filter"))
4220                                                                 {
4221                                                                         layer->blendfunc[0] = GL_DST_COLOR;
4222                                                                         layer->blendfunc[1] = GL_ZERO;
4223                                                                 }
4224                                                                 else if (!strcasecmp(parameter[1], "blend"))
4225                                                                 {
4226                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
4227                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
4228                                                                 }
4229                                                         }
4230                                                         else if (numparameters == 3)
4231                                                         {
4232                                                                 int k;
4233                                                                 for (k = 0;k < 2;k++)
4234                                                                 {
4235                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
4236                                                                                 layer->blendfunc[k] = GL_ONE;
4237                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
4238                                                                                 layer->blendfunc[k] = GL_ZERO;
4239                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
4240                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
4241                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
4242                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
4243                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
4244                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
4245                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
4246                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4247                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
4248                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
4249                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
4250                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
4251                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
4252                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
4253                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
4254                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
4255                                                                         else
4256                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
4257                                                                 }
4258                                                         }
4259                                                 }
4260                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
4261                                                         layer->alphatest = true;
4262                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
4263                                                 {
4264                                                         if (!strcasecmp(parameter[0], "clampmap"))
4265                                                                 layer->clampmap = true;
4266                                                         layer->numframes = 1;
4267                                                         layer->framerate = 1;
4268                                                         strlcpy(layer->texturename[0], parameter[1], sizeof(layer->texturename));
4269                                                         if (!strcasecmp(parameter[1], "$lightmap"))
4270                                                                 shader->lighting = true;
4271                                                 }
4272                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
4273                                                 {
4274                                                         int i;
4275                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
4276                                                         layer->framerate = atof(parameter[1]);
4277                                                         for (i = 0;i < layer->numframes;i++)
4278                                                                 strlcpy(layer->texturename[i], parameter[i + 2], sizeof(layer->texturename));
4279                                                 }
4280                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen") && !strcasecmp(parameter[1], "vertex"))
4281                                                         layer->rgbgenvertex = true;
4282                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen") && !strcasecmp(parameter[1], "vertex"))
4283                                                         layer->alphagenvertex = true;
4284                                                 // break out a level if it was }
4285                                                 if (!strcasecmp(com_token, "}"))
4286                                                         break;
4287                                         }
4288                                         if (layer->rgbgenvertex)
4289                                                 shader->lighting = true;
4290                                         if (layer->alphagenvertex)
4291                                         {
4292                                                 if (layer == shader->layers + 0)
4293                                                 {
4294                                                         // vertex controlled transparency
4295                                                         shader->vertexalpha = true;
4296                                                 }
4297                                                 else
4298                                                 {
4299                                                         // multilayer terrain shader or similar
4300                                                         shader->textureblendalpha = true;
4301                                                 }
4302                                         }
4303                                         continue;
4304                                 }
4305                                 numparameters = 0;
4306                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
4307                                 {
4308                                         if (j < TEXTURE_MAXFRAMES + 4)
4309                                         {
4310                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
4311                                                 numparameters = j + 1;
4312                                         }
4313                                         if (!COM_ParseToken(&text, true))
4314                                                 break;
4315                                 }
4316                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
4317                                         break;
4318                                 if (developer.integer >= 100)
4319                                 {
4320                                         Con_Printf("%s: ", shader->name);
4321                                         for (j = 0;j < numparameters;j++)
4322                                                 Con_Printf(" %s", parameter[j]);
4323                                         Con_Print("\n");
4324                                 }
4325                                 if (numparameters < 1)
4326                                         continue;
4327                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
4328                                 {
4329                                         if (!strcasecmp(parameter[1], "alphashadow"))
4330                                                 shader->surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
4331                                         else if (!strcasecmp(parameter[1], "areaportal"))
4332                                                 shader->surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
4333                                         else if (!strcasecmp(parameter[1], "botclip"))
4334                                                 shader->surfaceparms |= Q3SURFACEPARM_BOTCLIP;
4335                                         else if (!strcasecmp(parameter[1], "clusterportal"))
4336                                                 shader->surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
4337                                         else if (!strcasecmp(parameter[1], "detail"))
4338                                                 shader->surfaceparms |= Q3SURFACEPARM_DETAIL;
4339                                         else if (!strcasecmp(parameter[1], "donotenter"))
4340                                                 shader->surfaceparms |= Q3SURFACEPARM_DONOTENTER;
4341                                         else if (!strcasecmp(parameter[1], "dust"))
4342                                                 shader->surfaceparms |= Q3SURFACEPARM_DUST;
4343                                         else if (!strcasecmp(parameter[1], "hint"))
4344                                                 shader->surfaceparms |= Q3SURFACEPARM_HINT;
4345                                         else if (!strcasecmp(parameter[1], "fog"))
4346                                                 shader->surfaceparms |= Q3SURFACEPARM_FOG;
4347                                         else if (!strcasecmp(parameter[1], "lava"))
4348                                                 shader->surfaceparms |= Q3SURFACEPARM_LAVA;
4349                                         else if (!strcasecmp(parameter[1], "lightfilter"))
4350                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
4351                                         else if (!strcasecmp(parameter[1], "lightgrid"))
4352                                                 shader->surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
4353                                         else if (!strcasecmp(parameter[1], "metalsteps"))
4354                                                 shader->surfaceparms |= Q3SURFACEPARM_METALSTEPS;
4355                                         else if (!strcasecmp(parameter[1], "nodamage"))
4356                                                 shader->surfaceparms |= Q3SURFACEPARM_NODAMAGE;
4357                                         else if (!strcasecmp(parameter[1], "nodlight"))
4358                                                 shader->surfaceparms |= Q3SURFACEPARM_NODLIGHT;
4359                                         else if (!strcasecmp(parameter[1], "nodraw"))
4360                                                 shader->surfaceparms |= Q3SURFACEPARM_NODRAW;
4361                                         else if (!strcasecmp(parameter[1], "nodrop"))
4362                                                 shader->surfaceparms |= Q3SURFACEPARM_NODROP;
4363                                         else if (!strcasecmp(parameter[1], "noimpact"))
4364                                                 shader->surfaceparms |= Q3SURFACEPARM_NOIMPACT;
4365                                         else if (!strcasecmp(parameter[1], "nolightmap"))
4366                                                 shader->surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
4367                                         else if (!strcasecmp(parameter[1], "nomarks"))
4368                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMARKS;
4369                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
4370                                                 shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4371                                         else if (!strcasecmp(parameter[1], "nonsolid"))
4372                                                 shader->surfaceparms |= Q3SURFACEPARM_NONSOLID;
4373                                         else if (!strcasecmp(parameter[1], "origin"))
4374                                                 shader->surfaceparms |= Q3SURFACEPARM_ORIGIN;
4375                                         else if (!strcasecmp(parameter[1], "playerclip"))
4376                                                 shader->surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
4377                                         else if (!strcasecmp(parameter[1], "sky"))
4378                                                 shader->surfaceparms |= Q3SURFACEPARM_SKY;
4379                                         else if (!strcasecmp(parameter[1], "slick"))
4380                                                 shader->surfaceparms |= Q3SURFACEPARM_SLICK;
4381                                         else if (!strcasecmp(parameter[1], "slime"))
4382                                                 shader->surfaceparms |= Q3SURFACEPARM_SLIME;
4383                                         else if (!strcasecmp(parameter[1], "structural"))
4384                                                 shader->surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
4385                                         else if (!strcasecmp(parameter[1], "trans"))
4386                                                 shader->surfaceparms |= Q3SURFACEPARM_TRANS;
4387                                         else if (!strcasecmp(parameter[1], "water"))
4388                                                 shader->surfaceparms |= Q3SURFACEPARM_WATER;
4389                                         else if (!strcasecmp(parameter[1], "pointlight"))
4390                                                 shader->surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
4391                                         else if (!strcasecmp(parameter[1], "antiportal"))
4392                                                 shader->surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
4393                                         else
4394                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
4395                                 }
4396                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
4397                                 {
4398                                         // some q3 skies don't have the sky parm set
4399                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4400                                         strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4401                                 }
4402                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
4403                                 {
4404                                         // some q3 skies don't have the sky parm set
4405                                         shader->surfaceparms |= Q3SURFACEPARM_SKY;
4406                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
4407                                                 strlcpy(shader->skyboxname, parameter[1], sizeof(shader->skyboxname));
4408                                 }
4409                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
4410                                 {
4411                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
4412                                                 shader->textureflags |= Q3TEXTUREFLAG_TWOSIDED;
4413                                 }
4414                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
4415                                         shader->surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
4416                                 else if (!strcasecmp(parameter[0], "nopicmip"))
4417                                         shader->textureflags |= Q3TEXTUREFLAG_NOPICMIP;
4418                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
4419                                 {
4420                                         if (!strcasecmp(parameter[1], "autosprite") && numparameters == 2)
4421                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE;
4422                                         if (!strcasecmp(parameter[1], "autosprite2") && numparameters == 2)
4423                                                 shader->textureflags |= Q3TEXTUREFLAG_AUTOSPRITE2;
4424                                 }
4425                         }
4426                         // identify if this is a blended terrain shader or similar
4427                         if (shader->numlayers)
4428                         {
4429                                 shader->backgroundlayer = NULL;
4430                                 shader->primarylayer = shader->layers + 0;
4431                                 if ((shader->layers[0].blendfunc[0] == GL_ONE       && shader->layers[0].blendfunc[1] == GL_ZERO                && !shader->layers[0].alphatest)
4432                                 && ((shader->layers[1].blendfunc[0] == GL_SRC_ALPHA && shader->layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA && !shader->layers[0].alphatest)
4433                                 ||  (shader->layers[1].blendfunc[0] == GL_ONE       && shader->layers[1].blendfunc[1] == GL_ZERO                &&  shader->layers[1].alphatest)))
4434                                 {
4435                                         // terrain blending or other effects
4436                                         shader->backgroundlayer = shader->layers + 0;
4437                                         shader->primarylayer = shader->layers + 1;
4438                                 }
4439                                 // now see if the lightmap came first, and if so choose the second texture instead
4440                                 if (!strcasecmp(shader->primarylayer->texturename[0], "$lightmap"))
4441                                 {
4442                                         shader->backgroundlayer = NULL;
4443                                         shader->primarylayer = shader->layers + 1;
4444                                 }
4445                         }
4446                 }
4447                 Mem_Free(f);
4448         }
4449 }
4450
4451 q3shaderinfo_t *Mod_Q3BSP_LookupShader(const char *name)
4452 {
4453         int i;
4454         for (i = 0;i < Q3SHADER_MAXSHADERS;i++)
4455                 if (!strcasecmp(q3shaders_shaders[i].name, name))
4456                         return q3shaders_shaders + i;
4457         return NULL;
4458 }
4459
4460 static void Mod_Q3BSP_LoadTextures(lump_t *l)
4461 {
4462         q3dtexture_t *in;
4463         texture_t *out;
4464         int i, count, c;
4465
4466         in = (q3dtexture_t *)(mod_base + l->fileofs);
4467         if (l->filelen % sizeof(*in))
4468                 Host_Error("Mod_Q3BSP_LoadTextures: funny lump size in %s",loadmodel->name);
4469         count = l->filelen / sizeof(*in);
4470         out = (texture_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4471
4472         loadmodel->data_textures = out;
4473         loadmodel->num_textures = count;
4474         loadmodel->num_texturesperskin = loadmodel->num_textures;
4475
4476         for (i = 0;i < count;i++)
4477         {
4478                 strlcpy (out[i].name, in[i].name, sizeof (out[i].name));
4479                 out[i].surfaceflags = LittleLong(in[i].surfaceflags);
4480                 out[i].supercontents = Mod_Q3BSP_SuperContentsFromNativeContents(loadmodel, LittleLong(in[i].contents));
4481         }
4482
4483         if (cls.state == ca_dedicated)
4484                 return;
4485
4486         // parse the Q3 shader files
4487         Mod_Q3BSP_LoadShaders();
4488
4489         c = 0;
4490         for (i = 0;i < count;i++, in++, out++)
4491         {
4492                 q3shaderinfo_t *shader;
4493                 shader = Mod_Q3BSP_LookupShader(out->name);
4494                 if (shader)
4495                 {
4496                         out->surfaceparms = shader->surfaceparms;
4497                         out->textureflags = shader->textureflags;
4498                         out->basematerialflags = 0;
4499                         if (shader->surfaceparms & Q3SURFACEPARM_SKY)
4500                         {
4501                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4502                                 if (shader->skyboxname[0])
4503                                 {
4504                                         // quake3 seems to append a _ to the skybox name, so this must do so as well
4505                                         dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
4506                                 }
4507                         }
4508                         else if ((out->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
4509                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4510                         else if (shader->surfaceparms & Q3SURFACEPARM_LAVA)
4511                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NOSHADOW;
4512                         else if (shader->surfaceparms & Q3SURFACEPARM_SLIME)
4513                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4514                         else if (shader->surfaceparms & Q3SURFACEPARM_WATER)
4515                                 out->basematerialflags |= MATERIALFLAG_WATER | MATERIALFLAG_LIGHTBOTHSIDES | MATERIALFLAG_WATERALPHA | MATERIALFLAG_NOSHADOW;
4516                         else
4517                                 out->basematerialflags |= MATERIALFLAG_WALL;
4518                         if (shader->layers[0].alphatest)
4519                                 out->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
4520                         if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
4521                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
4522                         if (shader->textureflags & (Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
4523                                 out->basematerialflags |= MATERIALFLAG_NOSHADOW;
4524                         out->customblendfunc[0] = GL_ONE;
4525                         out->customblendfunc[1] = GL_ZERO;
4526                         if (shader->numlayers > 0)
4527                         {
4528                                 out->customblendfunc[0] = shader->layers[0].blendfunc[0];
4529                                 out->customblendfunc[1] = shader->layers[0].blendfunc[1];
4530 /*
4531 Q3 shader blendfuncs actually used in the game (* = supported by DP)
4532 * additive               GL_ONE GL_ONE
4533   additive weird         GL_ONE GL_SRC_ALPHA
4534   additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
4535 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
4536   alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
4537   brighten               GL_DST_COLOR GL_ONE
4538   brighten               GL_ONE GL_SRC_COLOR
4539   brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
4540   brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
4541 * modulate               GL_DST_COLOR GL_ZERO
4542 * modulate               GL_ZERO GL_SRC_COLOR
4543   modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
4544   modulate inverse alpha GL_ZERO GL_SRC_ALPHA
4545   modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
4546 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
4547 * no blend               GL_ONE GL_ZERO
4548   nothing                GL_ZERO GL_ONE
4549 */
4550                                 // if not opaque, figure out what blendfunc to use
4551                                 if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
4552                                 {
4553                                         if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
4554                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4555                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
4556                                                 out->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4557                                         else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
4558                                                 out->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4559                                         else
4560                                                 out->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
4561                                 }
4562                         }
4563                         if (!shader->lighting)
4564                                 out->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
4565                         if (shader->primarylayer)
4566                         {
4567                                 int j;
4568                                 out->numskinframes = shader->primarylayer->numframes;
4569                                 out->skinframerate = shader->primarylayer->framerate;
4570                                 for (j = 0;j < shader->primarylayer->numframes;j++)
4571                                         if (!(out->skinframes[j] = R_SkinFrame_LoadExternal(shader->primarylayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | ((!r_picmipworld.integer || (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP)) ? 0 : TEXF_PICMIP) | (shader->primarylayer->clampmap ? TEXF_CLAMP : 0), false)))
4572                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->primarylayer->texturename[j], j, out->name);
4573                         }
4574                         if (shader->backgroundlayer)
4575                         {
4576                                 int j;
4577                                 out->backgroundnumskinframes = shader->backgroundlayer->numframes;
4578                                 out->backgroundskinframerate = shader->backgroundlayer->framerate;
4579                                 for (j = 0;j < shader->backgroundlayer->numframes;j++)
4580                                 {
4581                                         if (!(out->backgroundskinframes[j] = R_SkinFrame_LoadExternal(shader->backgroundlayer->texturename[j], ((shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS) ? 0 : TEXF_MIPMAP) | TEXF_ALPHA | TEXF_PRECACHE | ((!r_picmipworld.integer || (shader->textureflags & Q3TEXTUREFLAG_NOPICMIP)) ? 0 : TEXF_PICMIP) | (shader->backgroundlayer->clampmap ? TEXF_CLAMP : 0), false)))
4582                                         {
4583                                                 Con_DPrintf("%s: could not load texture \"%s\" (frame %i) for shader \"%s\"\n", loadmodel->name, shader->backgroundlayer->texturename[j], j, out->name);
4584                                                 out->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
4585                                         }
4586                                 }
4587                         }
4588                 }
4589                 else if (!strcmp(out->name, "noshader"))
4590                         out->surfaceparms = 0;
4591                 else
4592                 {
4593                         c++;
4594                         Con_DPrintf("%s: No shader found for texture \"%s\"\n", loadmodel->name, out->name);
4595                         out->surfaceparms = 0;
4596                         if (out->surfaceflags & Q3SURFACEFLAG_NODRAW)
4597                                 out->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
4598                         else if (out->surfaceflags & Q3SURFACEFLAG_SKY)
4599                                 out->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
4600                         else
4601                                 out->basematerialflags |= MATERIALFLAG_WALL;
4602                         // these are defaults
4603                         //if (!strncmp(out->name, "textures/skies/", 15))
4604                         //      out->surfaceparms |= Q3SURFACEPARM_SKY;
4605                         //if (!strcmp(out->name, "caulk") || !strcmp(out->name, "common/caulk") || !strcmp(out->name, "textures/common/caulk")
4606                         // || !strcmp(out->name, "nodraw") || !strcmp(out->name, "common/nodraw") || !strcmp(out->name, "textures/common/nodraw"))
4607                         //      out->surfaceparms |= Q3SURFACEPARM_NODRAW;
4608                         //if (R_TextureHasAlpha(out->skinframes[0].base))
4609                         //      out->surfaceparms |= Q3SURFACEPARM_TRANS;
4610                         out->numskinframes = 1;
4611                         if (!(out->skinframes[0] = R_SkinFrame_LoadExternal(out->name, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | (r_picmipworld.integer ? TEXF_PICMIP : 0), false)))
4612                                 Con_DPrintf("%s: could not load texture for missing shader \"%s\"\n", loadmodel->name, out->name);
4613                 }
4614                 // init the animation variables
4615                 out->currentframe = out;
4616                 if (out->numskinframes < 1)
4617                         out->numskinframes = 1;
4618                 if (!out->skinframes[0])
4619                         out->skinframes[0] = R_SkinFrame_LoadMissing();
4620                 out->currentskinframe = out->skinframes[0];
4621                 out->backgroundcurrentskinframe = out->backgroundskinframes[0];
4622         }
4623         if (c)
4624                 Con_DPrintf("%s: %i textures missing shaders\n", loadmodel->name, c);
4625 }
4626
4627 static void Mod_Q3BSP_LoadPlanes(lump_t *l)
4628 {
4629         q3dplane_t *in;
4630         mplane_t *out;
4631         int i, count;
4632
4633         in = (q3dplane_t *)(mod_base + l->fileofs);
4634         if (l->filelen % sizeof(*in))
4635                 Host_Error("Mod_Q3BSP_LoadPlanes: funny lump size in %s",loadmodel->name);
4636         count = l->filelen / sizeof(*in);
4637         out = (mplane_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4638
4639         loadmodel->brush.data_planes = out;
4640         loadmodel->brush.num_planes = count;
4641
4642         for (i = 0;i < count;i++, in++, out++)
4643         {
4644                 out->normal[0] = LittleFloat(in->normal[0]);
4645                 out->normal[1] = LittleFloat(in->normal[1]);
4646                 out->normal[2] = LittleFloat(in->normal[2]);
4647                 out->dist = LittleFloat(in->dist);
4648                 PlaneClassify(out);
4649         }
4650 }
4651
4652 static void Mod_Q3BSP_LoadBrushSides(lump_t *l)
4653 {
4654         q3dbrushside_t *in;
4655         q3mbrushside_t *out;
4656         int i, n, count;
4657
4658         in = (q3dbrushside_t *)(mod_base + l->fileofs);
4659         if (l->filelen % sizeof(*in))
4660                 Host_Error("Mod_Q3BSP_LoadBrushSides: funny lump size in %s",loadmodel->name);
4661         count = l->filelen / sizeof(*in);
4662         out = (q3mbrushside_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4663
4664         loadmodel->brush.data_brushsides = out;
4665         loadmodel->brush.num_brushsides = count;
4666
4667         for (i = 0;i < count;i++, in++, out++)
4668         {
4669                 n = LittleLong(in->planeindex);
4670                 if (n < 0 || n >= loadmodel->brush.num_planes)
4671                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
4672                 out->plane = loadmodel->brush.data_planes + n;
4673                 n = LittleLong(in->textureindex);
4674                 if (n < 0 || n >= loadmodel->num_textures)
4675                         Host_Error("Mod_Q3BSP_LoadBrushSides: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4676                 out->texture = loadmodel->data_textures + n;
4677         }
4678 }
4679
4680 static void Mod_Q3BSP_LoadBrushes(lump_t *l)
4681 {
4682         q3dbrush_t *in;
4683         q3mbrush_t *out;
4684         int i, j, n, c, count, maxplanes;
4685         colplanef_t *planes;
4686
4687         in = (q3dbrush_t *)(mod_base + l->fileofs);
4688         if (l->filelen % sizeof(*in))
4689                 Host_Error("Mod_Q3BSP_LoadBrushes: funny lump size in %s",loadmodel->name);
4690         count = l->filelen / sizeof(*in);
4691         out = (q3mbrush_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4692
4693         loadmodel->brush.data_brushes = out;
4694         loadmodel->brush.num_brushes = count;
4695
4696         maxplanes = 0;
4697         planes = NULL;
4698
4699         for (i = 0;i < count;i++, in++, out++)
4700         {
4701                 n = LittleLong(in->firstbrushside);
4702                 c = LittleLong(in->numbrushsides);
4703                 if (n < 0 || n + c > loadmodel->brush.num_brushsides)
4704                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid brushside range %i : %i (%i brushsides)", n, n + c, loadmodel->brush.num_brushsides);
4705                 out->firstbrushside = loadmodel->brush.data_brushsides + n;
4706                 out->numbrushsides = c;
4707                 n = LittleLong(in->textureindex);
4708                 if (n < 0 || n >= loadmodel->num_textures)
4709                         Host_Error("Mod_Q3BSP_LoadBrushes: invalid textureindex %i (%i textures)", n, loadmodel->num_textures);
4710                 out->texture = loadmodel->data_textures + n;
4711
4712                 // make a list of mplane_t structs to construct a colbrush from
4713                 if (maxplanes < out->numbrushsides)
4714                 {
4715                         maxplanes = out->numbrushsides;
4716                         if (planes)
4717                                 Mem_Free(planes);
4718                         planes = (colplanef_t *)Mem_Alloc(tempmempool, sizeof(colplanef_t) * maxplanes);
4719                 }
4720                 for (j = 0;j < out->numbrushsides;j++)
4721                 {
4722                         VectorCopy(out->firstbrushside[j].plane->normal, planes[j].normal);
4723                         planes[j].dist = out->firstbrushside[j].plane->dist;
4724                         planes[j].q3surfaceflags = out->firstbrushside[j].texture->surfaceflags;
4725                         planes[j].texture = out->firstbrushside[j].texture;
4726                 }
4727                 // make the colbrush from the planes
4728                 out->colbrushf = Collision_NewBrushFromPlanes(loadmodel->mempool, out->numbrushsides, planes, out->texture->supercontents);
4729         }
4730         if (planes)
4731                 Mem_Free(planes);
4732 }
4733
4734 static void Mod_Q3BSP_LoadEffects(lump_t *l)
4735 {
4736         q3deffect_t *in;
4737         q3deffect_t *out;
4738         int i, n, count;
4739
4740         in = (q3deffect_t *)(mod_base + l->fileofs);
4741         if (l->filelen % sizeof(*in))
4742                 Host_Error("Mod_Q3BSP_LoadEffects: funny lump size in %s",loadmodel->name);
4743         count = l->filelen / sizeof(*in);
4744         out = (q3deffect_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4745
4746         loadmodel->brushq3.data_effects = out;
4747         loadmodel->brushq3.num_effects = count;
4748
4749         for (i = 0;i < count;i++, in++, out++)
4750         {
4751                 strlcpy (out->shadername, in->shadername, sizeof (out->shadername));
4752                 n = LittleLong(in->brushindex);
4753                 if (n >= loadmodel->brush.num_brushes)
4754                 {
4755                         Con_Printf("Mod_Q3BSP_LoadEffects: invalid brushindex %i (%i brushes), setting to -1\n", n, loadmodel->brush.num_brushes);
4756                         n = -1;
4757                 }
4758                 out->brushindex = n;
4759                 out->unknown = LittleLong(in->unknown);
4760         }
4761 }
4762
4763 static void Mod_Q3BSP_LoadVertices(lump_t *l)
4764 {
4765         q3dvertex_t *in;
4766         int i, count;
4767
4768         in = (q3dvertex_t *)(mod_base + l->fileofs);
4769         if (l->filelen % sizeof(*in))
4770                 Host_Error("Mod_Q3BSP_LoadVertices: funny lump size in %s",loadmodel->name);
4771         loadmodel->brushq3.num_vertices = count = l->filelen / sizeof(*in);
4772         loadmodel->brushq3.data_vertex3f = (float *)Mem_Alloc(loadmodel->mempool, count * (sizeof(float) * (3 + 3 + 2 + 2 + 4)));
4773         loadmodel->brushq3.data_normal3f = loadmodel->brushq3.data_vertex3f + count * 3;
4774         loadmodel->brushq3.data_texcoordtexture2f = loadmodel->brushq3.data_normal3f + count * 3;
4775         loadmodel->brushq3.data_texcoordlightmap2f = loadmodel->brushq3.data_texcoordtexture2f + count * 2;
4776         loadmodel->brushq3.data_color4f = loadmodel->brushq3.data_texcoordlightmap2f + count * 2;
4777
4778         for (i = 0;i < count;i++, in++)
4779         {
4780                 loadmodel->brushq3.data_vertex3f[i * 3 + 0] = LittleFloat(in->origin3f[0]);
4781                 loadmodel->brushq3.data_vertex3f[i * 3 + 1] = LittleFloat(in->origin3f[1]);
4782                 loadmodel->brushq3.data_vertex3f[i * 3 + 2] = LittleFloat(in->origin3f[2]);
4783                 loadmodel->brushq3.data_normal3f[i * 3 + 0] = LittleFloat(in->normal3f[0]);
4784                 loadmodel->brushq3.data_normal3f[i * 3 + 1] = LittleFloat(in->normal3f[1]);
4785                 loadmodel->brushq3.data_normal3f[i * 3 + 2] = LittleFloat(in->normal3f[2]);
4786                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 0] = LittleFloat(in->texcoord2f[0]);
4787                 loadmodel->brushq3.data_texcoordtexture2f[i * 2 + 1] = LittleFloat(in->texcoord2f[1]);
4788                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 0] = LittleFloat(in->lightmap2f[0]);
4789                 loadmodel->brushq3.data_texcoordlightmap2f[i * 2 + 1] = LittleFloat(in->lightmap2f[1]);
4790                 // svector/tvector are calculated later in face loading
4791                 loadmodel->brushq3.data_color4f[i * 4 + 0] = in->color4ub[0] * (1.0f / 255.0f);
4792                 loadmodel->brushq3.data_color4f[i * 4 + 1] = in->color4ub[1] * (1.0f / 255.0f);
4793                 loadmodel->brushq3.data_color4f[i * 4 + 2] = in->color4ub[2] * (1.0f / 255.0f);
4794                 loadmodel->brushq3.data_color4f[i * 4 + 3] = in->color4ub[3] * (1.0f / 255.0f);
4795         }
4796 }
4797
4798 static void Mod_Q3BSP_LoadTriangles(lump_t *l)
4799 {
4800         int *in;
4801         int *out;
4802         int i, count;
4803
4804         in = (int *)(mod_base + l->fileofs);
4805         if (l->filelen % sizeof(int[3]))
4806                 Host_Error("Mod_Q3BSP_LoadTriangles: funny lump size in %s",loadmodel->name);
4807         count = l->filelen / sizeof(*in);
4808         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4809
4810         loadmodel->brushq3.num_triangles = count / 3;
4811         loadmodel->brushq3.data_element3i = out;
4812
4813         for (i = 0;i < count;i++, in++, out++)
4814         {
4815                 *out = LittleLong(*in);
4816                 if (*out < 0 || *out >= loadmodel->brushq3.num_vertices)
4817                 {
4818                         Con_Printf("Mod_Q3BSP_LoadTriangles: invalid vertexindex %i (%i vertices), setting to 0\n", *out, loadmodel->brushq3.num_vertices);
4819                         *out = 0;
4820                 }
4821         }
4822 }
4823
4824 static void Mod_Q3BSP_LoadLightmaps(lump_t *l, lump_t *faceslump)
4825 {
4826         q3dlightmap_t *in;
4827         int i, j, count, power, power2, mask, endlightmap;
4828         unsigned char *c;
4829
4830         if (!l->filelen)
4831                 return;
4832         if (cls.state == ca_dedicated)
4833                 return;
4834         in = (q3dlightmap_t *)(mod_base + l->fileofs);
4835         if (l->filelen % sizeof(*in))
4836                 Host_Error("Mod_Q3BSP_LoadLightmaps: funny lump size in %s",loadmodel->name);
4837         count = l->filelen / sizeof(*in);
4838         loadmodel->brushq3.num_originallightmaps = count;
4839
4840         // now check the surfaces to see if any of them index an odd numbered
4841         // lightmap, if so this is not a deluxemapped bsp file
4842         //
4843         // also check what lightmaps are actually used, because q3map2 sometimes
4844         // (always?) makes an unused one at the end, which
4845         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4846         // reason when only one lightmap is used, which can throw off the
4847         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4848         // to see if the second lightmap is blank, if so it is not deluxemapped.
4849         loadmodel->brushq3.deluxemapping = !(count & 1);
4850         loadmodel->brushq3.deluxemapping_modelspace = true;
4851         endlightmap = 0;
4852         if (loadmodel->brushq3.deluxemapping)
4853         {
4854                 int facecount = faceslump->filelen / sizeof(q3dface_t);
4855                 q3dface_t *faces = (q3dface_t *)(mod_base + faceslump->fileofs);
4856                 for (i = 0;i < facecount;i++)
4857                 {
4858                         j = LittleLong(faces[i].lightmapindex);
4859                         if (j >= 0)
4860                         {
4861                                 endlightmap = max(endlightmap, j + 1);
4862                                 if ((j & 1) || j + 1 >= count)
4863                                 {
4864                                         loadmodel->brushq3.deluxemapping = false;
4865                                         break;
4866                                 }
4867                         }
4868                 }
4869         }
4870         if (endlightmap < 2)
4871                 loadmodel->brushq3.deluxemapping = false;
4872
4873         // q3map2 sometimes (or always?) makes a second blank lightmap for no
4874         // reason when only one lightmap is used, which can throw off the
4875         // deluxemapping detection method, so check 2-lightmap bsp's specifically
4876         // to see if the second lightmap is blank, if so it is not deluxemapped.
4877         if (endlightmap == 1 && count == 2)
4878         {
4879                 c = in[1].rgb;
4880                 for (i = 0;i < 128*128*3;i++)
4881                         if (c[i])
4882                                 break;
4883                 if (i == 128*128*3)
4884                 {
4885                         // all pixels in the unused lightmap were black...
4886                         loadmodel->brushq3.deluxemapping = false;
4887                 }
4888         }
4889
4890         Con_DPrintf("%s is %sdeluxemapped\n", loadmodel->name, loadmodel->brushq3.deluxemapping ? "" : "not ");
4891
4892         // figure out what the most reasonable merge power is within limits
4893         loadmodel->brushq3.num_lightmapmergepower = 0;
4894         for (power = 1;power <= mod_q3bsp_lightmapmergepower.integer && (1 << power) <= gl_max_texture_size && (1 << (power * 2)) < 4 * (count >> loadmodel->brushq3.deluxemapping);power++)
4895                 loadmodel->brushq3.num_lightmapmergepower = power;
4896         loadmodel->brushq3.num_lightmapmerge = 1 << loadmodel->brushq3.num_lightmapmergepower;
4897
4898         loadmodel->brushq3.num_mergedlightmaps = ((count >> loadmodel->brushq3.deluxemapping) + (1 << (loadmodel->brushq3.num_lightmapmergepower * 2)) - 1) >> (loadmodel->brushq3.num_lightmapmergepower * 2);
4899         loadmodel->brushq3.data_lightmaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4900         if (loadmodel->brushq3.deluxemapping)
4901                 loadmodel->brushq3.data_deluxemaps = (rtexture_t **)Mem_Alloc(loadmodel->mempool, loadmodel->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
4902
4903         // allocate a texture pool if we need it
4904         if (loadmodel->texturepool == NULL && cls.state != ca_dedicated)
4905                 loadmodel->texturepool = R_AllocTexturePool();
4906
4907         j = 128 << loadmodel->brushq3.num_lightmapmergepower;
4908         if (loadmodel->brushq3.data_lightmaps)
4909                 for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4910                         loadmodel->brushq3.data_lightmaps[i] = R_LoadTexture2D(loadmodel->texturepool, va("lightmap%04i", i), j, j, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4911
4912         if (loadmodel->brushq3.data_deluxemaps)
4913                 for (i = 0;i < loadmodel->brushq3.num_mergedlightmaps;i++)
4914                         loadmodel->brushq3.data_deluxemaps[i] = R_LoadTexture2D(loadmodel->texturepool, va("deluxemap%04i", i), j, j, NULL, TEXTYPE_RGB, TEXF_FORCELINEAR | TEXF_PRECACHE, NULL);
4915
4916         power = loadmodel->brushq3.num_lightmapmergepower;
4917         power2 = power * 2;
4918         mask = (1 << power) - 1;
4919         for (i = 0;i < count;i++)
4920         {
4921                 j = i >> loadmodel->brushq3.deluxemapping;
4922                 if (loadmodel->brushq3.deluxemapping && (i & 1))
4923                         R_UpdateTexture(loadmodel->brushq3.data_deluxemaps[j >> power2], in[i].rgb, (j & mask) * 128, ((j >> power) & mask) * 128, 128, 128);
4924                 else
4925                         R_UpdateTexture(loadmodel->brushq3.data_lightmaps [j >> power2], in[i].rgb, (j & mask) * 128, ((j >> power) & mask) * 128, 128, 128);
4926         }
4927 }
4928
4929 static void Mod_Q3BSP_LoadFaces(lump_t *l)
4930 {
4931         q3dface_t *in, *oldin;
4932         msurface_t *out, *oldout;
4933         int i, oldi, j, n, count, invalidelements, patchsize[2], finalwidth, finalheight, xtess, ytess, finalvertices, finaltriangles, firstvertex, firstelement, type, oldnumtriangles, oldnumtriangles2, meshvertices, meshtriangles, numvertices, numtriangles;
4934         float lightmaptcbase[2], lightmaptcscale;
4935         //int *originalelement3i;
4936         //int *originalneighbor3i;
4937         float *originalvertex3f;
4938         //float *originalsvector3f;
4939         //float *originaltvector3f;
4940         float *originalnormal3f;
4941         float *originalcolor4f;
4942         float *originaltexcoordtexture2f;
4943         float *originaltexcoordlightmap2f;
4944         float *v;
4945
4946         in = (q3dface_t *)(mod_base + l->fileofs);
4947         if (l->filelen % sizeof(*in))
4948                 Host_Error("Mod_Q3BSP_LoadFaces: funny lump size in %s",loadmodel->name);
4949         count = l->filelen / sizeof(*in);
4950         out = (msurface_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
4951
4952         loadmodel->data_surfaces = out;
4953         loadmodel->num_surfaces = count;
4954
4955         i = 0;
4956         oldi = i;
4957         oldin = in;
4958         oldout = out;
4959         meshvertices = 0;
4960         meshtriangles = 0;
4961         for (;i < count;i++, in++, out++)
4962         {
4963                 // check face type first
4964                 type = LittleLong(in->type);
4965                 if (type != Q3FACETYPE_POLYGON
4966                  && type != Q3FACETYPE_PATCH
4967                  && type != Q3FACETYPE_MESH
4968                  && type != Q3FACETYPE_FLARE)
4969                 {
4970                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: unknown face type %i\n", i, type);
4971                         continue;
4972                 }
4973
4974                 n = LittleLong(in->textureindex);
4975                 if (n < 0 || n >= loadmodel->num_textures)
4976                 {
4977                         Con_DPrintf("Mod_Q3BSP_LoadFaces: face #%i: invalid textureindex %i (%i textures)\n", i, n, loadmodel->num_textures);
4978                         continue;
4979                 }
4980                 out->texture = loadmodel->data_textures + n;
4981                 n = LittleLong(in->effectindex);
4982                 if (n < -1 || n >= loadmodel->brushq3.num_effects)
4983                 {
4984                         if (developer.integer >= 100)
4985                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid effectindex %i (%i effects)\n", i, out->texture->name, n, loadmodel->brushq3.num_effects);
4986                         n = -1;
4987                 }
4988                 if (n == -1)
4989                         out->effect = NULL;
4990                 else
4991                         out->effect = loadmodel->brushq3.data_effects + n;
4992
4993                 if (cls.state != ca_dedicated)
4994                 {
4995                         out->lightmaptexture = NULL;
4996                         out->deluxemaptexture = r_texture_blanknormalmap;
4997                         n = LittleLong(in->lightmapindex);
4998                         if (n < 0)
4999                                 n = -1;
5000                         else if (n >= loadmodel->brushq3.num_originallightmaps)
5001                         {
5002                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid lightmapindex %i (%i lightmaps)\n", i, out->texture->name, n, loadmodel->brushq3.num_originallightmaps);
5003                                 n = -1;
5004                         }
5005                         else
5006                         {
5007                                 out->lightmaptexture = loadmodel->brushq3.data_lightmaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
5008                                 if (loadmodel->brushq3.deluxemapping)
5009                                         out->deluxemaptexture = loadmodel->brushq3.data_deluxemaps[n >> (loadmodel->brushq3.num_lightmapmergepower * 2 + loadmodel->brushq3.deluxemapping)];
5010                         }
5011                 }
5012
5013                 firstvertex = LittleLong(in->firstvertex);
5014                 numvertices = LittleLong(in->numvertices);
5015                 firstelement = LittleLong(in->firstelement);
5016                 numtriangles = LittleLong(in->numelements) / 3;
5017                 if (numtriangles * 3 != LittleLong(in->numelements))
5018                 {
5019                         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));
5020                         continue;
5021                 }
5022                 if (firstvertex < 0 || firstvertex + numvertices > loadmodel->brushq3.num_vertices)
5023                 {
5024                         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);
5025                         continue;
5026                 }
5027                 if (firstelement < 0 || firstelement + numtriangles * 3 > loadmodel->brushq3.num_triangles * 3)
5028                 {
5029                         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);
5030                         continue;
5031                 }
5032                 switch(type)
5033                 {
5034                 case Q3FACETYPE_POLYGON:
5035                 case Q3FACETYPE_MESH:
5036                         // no processing necessary
5037                         break;
5038                 case Q3FACETYPE_PATCH:
5039                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5040                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5041                         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))
5042                         {
5043                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): invalid patchsize %ix%i\n", i, out->texture->name, patchsize[0], patchsize[1]);
5044                                 continue;
5045                         }
5046                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5047                         // convert patch to Q3FACETYPE_MESH
5048                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5049                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5050                         // bound to user settings
5051                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5052                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5053                         // bound to sanity settings
5054                         xtess = bound(1, xtess, 1024);
5055                         ytess = bound(1, ytess, 1024);
5056                         // bound to user limit on vertices
5057                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5058                         {
5059                                 if (xtess > ytess)
5060                                         xtess--;
5061                                 else
5062                                         ytess--;
5063                         }
5064                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5065                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5066                         numvertices = finalwidth * finalheight;
5067                         numtriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5068                         break;
5069                 case Q3FACETYPE_FLARE:
5070                         if (developer.integer >= 100)
5071                                 Con_Printf("Mod_Q3BSP_LoadFaces: face #%i (texture \"%s\"): Q3FACETYPE_FLARE not supported (yet)\n", i, out->texture->name);
5072                         // don't render it
5073                         continue;
5074                 }
5075                 out->num_vertices = numvertices;
5076                 out->num_triangles = numtriangles;
5077                 meshvertices += out->num_vertices;
5078                 meshtriangles += out->num_triangles;
5079         }
5080
5081         i = oldi;
5082         in = oldin;
5083         out = oldout;
5084         Mod_AllocSurfMesh(loadmodel->mempool, meshvertices, meshtriangles, false, true, false);
5085         meshvertices = 0;
5086         meshtriangles = 0;
5087         for (;i < count && meshvertices + out->num_vertices <= loadmodel->surfmesh.num_vertices;i++, in++, out++)
5088         {
5089                 if (out->num_vertices < 3 || out->num_triangles < 1)
5090                         continue;
5091
5092                 type = LittleLong(in->type);
5093                 firstvertex = LittleLong(in->firstvertex);
5094                 firstelement = LittleLong(in->firstelement);
5095                 out->num_firstvertex = meshvertices;
5096                 out->num_firsttriangle = meshtriangles;
5097                 switch(type)
5098                 {
5099                 case Q3FACETYPE_POLYGON:
5100                 case Q3FACETYPE_MESH:
5101                         // no processing necessary, except for lightmap merging
5102                         for (j = 0;j < out->num_vertices;j++)
5103                         {
5104                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 0];
5105                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 1];
5106                                 (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_vertex3f[(firstvertex + j) * 3 + 2];
5107                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 0] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 0];
5108                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 1] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 1];
5109                                 (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex)[j * 3 + 2] = loadmodel->brushq3.data_normal3f[(firstvertex + j) * 3 + 2];
5110                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 0];
5111                                 (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordtexture2f[(firstvertex + j) * 2 + 1];
5112                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 0] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 0];
5113                                 (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex)[j * 2 + 1] = loadmodel->brushq3.data_texcoordlightmap2f[(firstvertex + j) * 2 + 1];
5114                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 0] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 0];
5115                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 1] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 1];
5116                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 2] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 2];
5117                                 (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex)[j * 4 + 3] = loadmodel->brushq3.data_color4f[(firstvertex + j) * 4 + 3];
5118                         }
5119                         for (j = 0;j < out->num_triangles*3;j++)
5120                                 (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = loadmodel->brushq3.data_element3i[firstelement + j] + out->num_firstvertex;
5121                         break;
5122                 case Q3FACETYPE_PATCH:
5123                         patchsize[0] = LittleLong(in->specific.patch.patchsize[0]);
5124                         patchsize[1] = LittleLong(in->specific.patch.patchsize[1]);
5125                         originalvertex3f = loadmodel->brushq3.data_vertex3f + firstvertex * 3;
5126                         originalnormal3f = loadmodel->brushq3.data_normal3f + firstvertex * 3;
5127                         originaltexcoordtexture2f = loadmodel->brushq3.data_texcoordtexture2f + firstvertex * 2;
5128                         originaltexcoordlightmap2f = loadmodel->brushq3.data_texcoordlightmap2f + firstvertex * 2;
5129                         originalcolor4f = loadmodel->brushq3.data_color4f + firstvertex * 4;
5130                         // convert patch to Q3FACETYPE_MESH
5131                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5132                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_tolerance.value);
5133                         // bound to user settings
5134                         xtess = bound(r_subdivisions_mintess.integer, xtess, r_subdivisions_maxtess.integer);
5135                         ytess = bound(r_subdivisions_mintess.integer, ytess, r_subdivisions_maxtess.integer);
5136                         // bound to sanity settings
5137                         xtess = bound(1, xtess, 1024);
5138                         ytess = bound(1, ytess, 1024);
5139                         // bound to user limit on vertices
5140                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_maxvertices.integer, 262144))
5141                         {
5142                                 if (xtess > ytess)
5143                                         xtess--;
5144                                 else
5145                                         ytess--;
5146                         }
5147                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5148                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5149                         finalvertices = finalwidth * finalheight;
5150                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5151                         type = Q3FACETYPE_MESH;
5152                         // generate geometry
5153                         // (note: normals are skipped because they get recalculated)
5154                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5155                         Q3PatchTesselateFloat(3, sizeof(float[3]), (loadmodel->surfmesh.data_normal3f + 3 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[3]), originalnormal3f, xtess, ytess);
5156                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordtexture2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordtexture2f, xtess, ytess);
5157                         Q3PatchTesselateFloat(2, sizeof(float[2]), (loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[2]), originaltexcoordlightmap2f, xtess, ytess);
5158                         Q3PatchTesselateFloat(4, sizeof(float[4]), (loadmodel->surfmesh.data_lightmapcolor4f + 4 * out->num_firstvertex), patchsize[0], patchsize[1], sizeof(float[4]), originalcolor4f, xtess, ytess);
5159                         Q3PatchTriangleElements((loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle), finalwidth, finalheight, out->num_firstvertex);
5160                         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);
5161                         if (developer.integer >= 100)
5162                         {
5163                                 if (out->num_triangles < finaltriangles)
5164                                         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);
5165                                 else
5166                                         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);
5167                         }
5168                         // q3map does not put in collision brushes for curves... ugh
5169                         // build the lower quality collision geometry
5170                         xtess = Q3PatchTesselationOnX(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5171                         ytess = Q3PatchTesselationOnY(patchsize[0], patchsize[1], 3, originalvertex3f, r_subdivisions_collision_tolerance.value);
5172                         // bound to user settings
5173                         xtess = bound(r_subdivisions_collision_mintess.integer, xtess, r_subdivisions_collision_maxtess.integer);
5174                         ytess = bound(r_subdivisions_collision_mintess.integer, ytess, r_subdivisions_collision_maxtess.integer);
5175                         // bound to sanity settings
5176                         xtess = bound(1, xtess, 1024);
5177                         ytess = bound(1, ytess, 1024);
5178                         // bound to user limit on vertices
5179                         while ((xtess > 1 || ytess > 1) && (((patchsize[0] - 1) * xtess) + 1) * (((patchsize[1] - 1) * ytess) + 1) > min(r_subdivisions_collision_maxvertices.integer, 262144))
5180                         {
5181                                 if (xtess > ytess)
5182                                         xtess--;
5183                                 else
5184                                         ytess--;
5185                         }
5186                         finalwidth = ((patchsize[0] - 1) * xtess) + 1;
5187                         finalheight = ((patchsize[1] - 1) * ytess) + 1;
5188                         finalvertices = finalwidth * finalheight;
5189                         finaltriangles = (finalwidth - 1) * (finalheight - 1) * 2;
5190
5191                         out->data_collisionvertex3f = (float *)Mem_Alloc(loadmodel->mempool, sizeof(float[3]) * finalvertices);
5192                         out->data_collisionelement3i = (int *)Mem_Alloc(loadmodel->mempool, sizeof(int[3]) * finaltriangles);
5193                         out->num_collisionvertices = finalvertices;
5194                         out->num_collisiontriangles = finaltriangles;
5195                         Q3PatchTesselateFloat(3, sizeof(float[3]), out->data_collisionvertex3f, patchsize[0], patchsize[1], sizeof(float[3]), originalvertex3f, xtess, ytess);
5196                         Q3PatchTriangleElements(out->data_collisionelement3i, finalwidth, finalheight, 0);
5197
5198                         //Mod_SnapVertices(3, out->num_vertices, (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), 0.25);
5199                         Mod_SnapVertices(3, out->num_collisionvertices, out->data_collisionvertex3f, 1);
5200
5201                         oldnumtriangles = out->num_triangles;
5202                         oldnumtriangles2 = out->num_collisiontriangles;
5203                         out->num_collisiontriangles = Mod_RemoveDegenerateTriangles(out->num_collisiontriangles, out->data_collisionelement3i, out->data_collisionelement3i, out->data_collisionvertex3f);
5204                         if (developer.integer >= 100)
5205                                 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);
5206                         break;
5207                 default:
5208                         break;
5209                 }
5210                 meshvertices += out->num_vertices;
5211                 meshtriangles += out->num_triangles;
5212                 for (j = 0, invalidelements = 0;j < out->num_triangles * 3;j++)
5213                         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)
5214                                 invalidelements++;
5215                 if (invalidelements)
5216                 {
5217                         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);
5218                         for (j = 0;j < out->num_triangles * 3;j++)
5219                         {
5220                                 Con_Printf(" %i", (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] - out->num_firstvertex);
5221                                 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)
5222                                         (loadmodel->surfmesh.data_element3i + 3 * out->num_firsttriangle)[j] = out->num_firstvertex;
5223                         }
5224                         Con_Print("\n");
5225                 }
5226                 // calculate a bounding box
5227                 VectorClear(out->mins);
5228                 VectorClear(out->maxs);
5229                 if (out->num_vertices)
5230                 {
5231                         int lightmapindex = LittleLong(in->lightmapindex);
5232                         if (lightmapindex >= 0 && cls.state != ca_dedicated)
5233                         {
5234                                 lightmapindex >>= loadmodel->brushq3.deluxemapping;
5235                                 lightmaptcscale = 1.0f / loadmodel->brushq3.num_lightmapmerge;
5236                                 lightmaptcbase[0] = ((lightmapindex                                             ) & (loadmodel->brushq3.num_lightmapmerge - 1)) * lightmaptcscale;
5237                                 lightmaptcbase[1] = ((lightmapindex >> loadmodel->brushq3.num_lightmapmergepower) & (loadmodel->brushq3.num_lightmapmerge - 1)) * lightmaptcscale;
5238                                 // modify the lightmap texcoords to match this region of the merged lightmap
5239                                 for (j = 0, v = loadmodel->surfmesh.data_texcoordlightmap2f + 2 * out->num_firstvertex;j < out->num_vertices;j++, v += 2)
5240                                 {
5241                                         v[0] = v[0] * lightmaptcscale + lightmaptcbase[0];
5242                                         v[1] = v[1] * lightmaptcscale + lightmaptcbase[1];
5243                                 }
5244                         }
5245                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->mins);
5246                         VectorCopy((loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex), out->maxs);
5247                         for (j = 1, v = (loadmodel->surfmesh.data_vertex3f + 3 * out->num_firstvertex) + 3;j < out->num_vertices;j++, v += 3)
5248                         {
5249                                 out->mins[0] = min(out->mins[0], v[0]);
5250                                 out->maxs[0] = max(out->maxs[0], v[0]);
5251                                 out->mins[1] = min(out->mins[1], v[1]);
5252                                 out->maxs[1] = max(out->maxs[1], v[1]);
5253                                 out->mins[2] = min(out->mins[2], v[2]);
5254                                 out->maxs[2] = max(out->maxs[2], v[2]);
5255                         }
5256                         out->mins[0] -= 1.0f;
5257                         out->mins[1] -= 1.0f;
5258                         out->mins[2] -= 1.0f;
5259                         out->maxs[0] += 1.0f;
5260                         out->maxs[1] += 1.0f;
5261                         out->maxs[2] += 1.0f;
5262                 }
5263                 // set lightmap styles for consistency with q1bsp
5264                 //out->lightmapinfo->styles[0] = 0;
5265                 //out->lightmapinfo->styles[1] = 255;
5266                 //out->lightmapinfo->styles[2] = 255;
5267                 //out->lightmapinfo->styles[3] = 255;
5268         }
5269
5270         // for per pixel lighting
5271         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);
5272
5273         // free the no longer needed vertex data
5274         loadmodel->brushq3.num_vertices = 0;
5275         if (loadmodel->brushq3.data_vertex3f)
5276                 Mem_Free(loadmodel->brushq3.data_vertex3f);
5277         loadmodel->brushq3.data_vertex3f = NULL;
5278         loadmodel->brushq3.data_normal3f = NULL;
5279         loadmodel->brushq3.data_texcoordtexture2f = NULL;
5280         loadmodel->brushq3.data_texcoordlightmap2f = NULL;
5281         loadmodel->brushq3.data_color4f = NULL;
5282         // free the no longer needed triangle data
5283         loadmodel->brushq3.num_triangles = 0;
5284         if (loadmodel->brushq3.data_element3i)
5285                 Mem_Free(loadmodel->brushq3.data_element3i);
5286         loadmodel->brushq3.data_element3i = NULL;
5287 }
5288
5289 static void Mod_Q3BSP_LoadModels(lump_t *l)
5290 {
5291         q3dmodel_t *in;
5292         q3dmodel_t *out;
5293         int i, j, n, c, count;
5294
5295         in = (q3dmodel_t *)(mod_base + l->fileofs);
5296         if (l->filelen % sizeof(*in))
5297                 Host_Error("Mod_Q3BSP_LoadModels: funny lump size in %s",loadmodel->name);
5298         count = l->filelen / sizeof(*in);
5299         out = (q3dmodel_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5300
5301         loadmodel->brushq3.data_models = out;
5302         loadmodel->brushq3.num_models = count;
5303
5304         for (i = 0;i < count;i++, in++, out++)
5305         {
5306                 for (j = 0;j < 3;j++)
5307                 {
5308                         out->mins[j] = LittleFloat(in->mins[j]);
5309                         out->maxs[j] = LittleFloat(in->maxs[j]);
5310                 }
5311                 n = LittleLong(in->firstface);
5312                 c = LittleLong(in->numfaces);
5313                 if (n < 0 || n + c > loadmodel->num_surfaces)
5314                         Host_Error("Mod_Q3BSP_LoadModels: invalid face range %i : %i (%i faces)", n, n + c, loadmodel->num_surfaces);
5315                 out->firstface = n;
5316                 out->numfaces = c;
5317                 n = LittleLong(in->firstbrush);
5318                 c = LittleLong(in->numbrushes);
5319                 if (n < 0 || n + c > loadmodel->brush.num_brushes)
5320                         Host_Error("Mod_Q3BSP_LoadModels: invalid brush range %i : %i (%i brushes)", n, n + c, loadmodel->brush.num_brushes);
5321                 out->firstbrush = n;
5322                 out->numbrushes = c;
5323         }
5324 }
5325
5326 static void Mod_Q3BSP_LoadLeafBrushes(lump_t *l)
5327 {
5328         int *in;
5329         int *out;
5330         int i, n, count;
5331
5332         in = (int *)(mod_base + l->fileofs);
5333         if (l->filelen % sizeof(*in))
5334                 Host_Error("Mod_Q3BSP_LoadLeafBrushes: funny lump size in %s",loadmodel->name);
5335         count = l->filelen / sizeof(*in);
5336         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5337
5338         loadmodel->brush.data_leafbrushes = out;
5339         loadmodel->brush.num_leafbrushes = count;
5340
5341         for (i = 0;i < count;i++, in++, out++)
5342         {
5343                 n = LittleLong(*in);
5344                 if (n < 0 || n >= loadmodel->brush.num_brushes)
5345                         Host_Error("Mod_Q3BSP_LoadLeafBrushes: invalid brush index %i (%i brushes)", n, loadmodel->brush.num_brushes);
5346                 *out = n;
5347         }
5348 }
5349
5350 static void Mod_Q3BSP_LoadLeafFaces(lump_t *l)
5351 {
5352         int *in;
5353         int *out;
5354         int i, n, count;
5355
5356         in = (int *)(mod_base + l->fileofs);
5357         if (l->filelen % sizeof(*in))
5358                 Host_Error("Mod_Q3BSP_LoadLeafFaces: funny lump size in %s",loadmodel->name);
5359         count = l->filelen / sizeof(*in);
5360         out = (int *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5361
5362         loadmodel->brush.data_leafsurfaces = out;
5363         loadmodel->brush.num_leafsurfaces = count;
5364
5365         for (i = 0;i < count;i++, in++, out++)
5366         {
5367                 n = LittleLong(*in);
5368                 if (n < 0 || n >= loadmodel->num_surfaces)
5369                         Host_Error("Mod_Q3BSP_LoadLeafFaces: invalid face index %i (%i faces)", n, loadmodel->num_surfaces);
5370                 *out = n;
5371         }
5372 }
5373
5374 static void Mod_Q3BSP_LoadLeafs(lump_t *l)
5375 {
5376         q3dleaf_t *in;
5377         mleaf_t *out;
5378         int i, j, n, c, count;
5379
5380         in = (q3dleaf_t *)(mod_base + l->fileofs);
5381         if (l->filelen % sizeof(*in))
5382                 Host_Error("Mod_Q3BSP_LoadLeafs: funny lump size in %s",loadmodel->name);
5383         count = l->filelen / sizeof(*in);
5384         out = (mleaf_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5385
5386         loadmodel->brush.data_leafs = out;
5387         loadmodel->brush.num_leafs = count;
5388
5389         for (i = 0;i < count;i++, in++, out++)
5390         {
5391                 out->parent = NULL;
5392                 out->plane = NULL;
5393                 out->clusterindex = LittleLong(in->clusterindex);
5394                 out->areaindex = LittleLong(in->areaindex);
5395                 for (j = 0;j < 3;j++)
5396                 {
5397                         // yes the mins/maxs are ints
5398                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5399                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5400                 }
5401                 n = LittleLong(in->firstleafface);
5402                 c = LittleLong(in->numleaffaces);
5403                 if (n < 0 || n + c > loadmodel->brush.num_leafsurfaces)
5404                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafsurface range %i : %i (%i leafsurfaces)", n, n + c, loadmodel->brush.num_leafsurfaces);
5405                 out->firstleafsurface = loadmodel->brush.data_leafsurfaces + n;
5406                 out->numleafsurfaces = c;
5407                 n = LittleLong(in->firstleafbrush);
5408                 c = LittleLong(in->numleafbrushes);
5409                 if (n < 0 || n + c > loadmodel->brush.num_leafbrushes)
5410                         Host_Error("Mod_Q3BSP_LoadLeafs: invalid leafbrush range %i : %i (%i leafbrushes)", n, n + c, loadmodel->brush.num_leafbrushes);
5411                 out->firstleafbrush = loadmodel->brush.data_leafbrushes + n;
5412                 out->numleafbrushes = c;
5413         }
5414 }
5415
5416 static void Mod_Q3BSP_LoadNodes(lump_t *l)
5417 {
5418         q3dnode_t *in;
5419         mnode_t *out;
5420         int i, j, n, count;
5421
5422         in = (q3dnode_t *)(mod_base + l->fileofs);
5423         if (l->filelen % sizeof(*in))
5424                 Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
5425         count = l->filelen / sizeof(*in);
5426         out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5427
5428         loadmodel->brush.data_nodes = out;
5429         loadmodel->brush.num_nodes = count;
5430
5431         for (i = 0;i < count;i++, in++, out++)
5432         {
5433                 out->parent = NULL;
5434                 n = LittleLong(in->planeindex);
5435                 if (n < 0 || n >= loadmodel->brush.num_planes)
5436                         Host_Error("Mod_Q3BSP_LoadNodes: invalid planeindex %i (%i planes)", n, loadmodel->brush.num_planes);
5437                 out->plane = loadmodel->brush.data_planes + n;
5438                 for (j = 0;j < 2;j++)
5439                 {
5440                         n = LittleLong(in->childrenindex[j]);
5441                         if (n >= 0)
5442                         {
5443                                 if (n >= loadmodel->brush.num_nodes)
5444                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child node index %i (%i nodes)", n, loadmodel->brush.num_nodes);
5445                                 out->children[j] = loadmodel->brush.data_nodes + n;
5446                         }
5447                         else
5448                         {
5449                                 n = -1 - n;
5450                                 if (n >= loadmodel->brush.num_leafs)
5451                                         Host_Error("Mod_Q3BSP_LoadNodes: invalid child leaf index %i (%i leafs)", n, loadmodel->brush.num_leafs);
5452                                 out->children[j] = (mnode_t *)(loadmodel->brush.data_leafs + n);
5453                         }
5454                 }
5455                 for (j = 0;j < 3;j++)
5456                 {
5457                         // yes the mins/maxs are ints
5458                         out->mins[j] = LittleLong(in->mins[j]) - 1;
5459                         out->maxs[j] = LittleLong(in->maxs[j]) + 1;
5460                 }
5461         }
5462
5463         // set the parent pointers
5464         Mod_Q1BSP_LoadNodes_RecursiveSetParent(loadmodel->brush.data_nodes, NULL);
5465 }
5466
5467 static void Mod_Q3BSP_LoadLightGrid(lump_t *l)
5468 {
5469         q3dlightgrid_t *in;
5470         q3dlightgrid_t *out;
5471         int count;
5472
5473         in = (q3dlightgrid_t *)(mod_base + l->fileofs);
5474         if (l->filelen % sizeof(*in))
5475                 Host_Error("Mod_Q3BSP_LoadLightGrid: funny lump size in %s",loadmodel->name);
5476         loadmodel->brushq3.num_lightgrid_scale[0] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[0];
5477         loadmodel->brushq3.num_lightgrid_scale[1] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[1];
5478         loadmodel->brushq3.num_lightgrid_scale[2] = 1.0f / loadmodel->brushq3.num_lightgrid_cellsize[2];
5479         loadmodel->brushq3.num_lightgrid_imins[0] = (int)ceil(loadmodel->brushq3.data_models->mins[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5480         loadmodel->brushq3.num_lightgrid_imins[1] = (int)ceil(loadmodel->brushq3.data_models->mins[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5481         loadmodel->brushq3.num_lightgrid_imins[2] = (int)ceil(loadmodel->brushq3.data_models->mins[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5482         loadmodel->brushq3.num_lightgrid_imaxs[0] = (int)floor(loadmodel->brushq3.data_models->maxs[0] * loadmodel->brushq3.num_lightgrid_scale[0]);
5483         loadmodel->brushq3.num_lightgrid_imaxs[1] = (int)floor(loadmodel->brushq3.data_models->maxs[1] * loadmodel->brushq3.num_lightgrid_scale[1]);
5484         loadmodel->brushq3.num_lightgrid_imaxs[2] = (int)floor(loadmodel->brushq3.data_models->maxs[2] * loadmodel->brushq3.num_lightgrid_scale[2]);
5485         loadmodel->brushq3.num_lightgrid_isize[0] = loadmodel->brushq3.num_lightgrid_imaxs[0] - loadmodel->brushq3.num_lightgrid_imins[0] + 1;
5486         loadmodel->brushq3.num_lightgrid_isize[1] = loadmodel->brushq3.num_lightgrid_imaxs[1] - loadmodel->brushq3.num_lightgrid_imins[1] + 1;
5487         loadmodel->brushq3.num_lightgrid_isize[2] = loadmodel->brushq3.num_lightgrid_imaxs[2] - loadmodel->brushq3.num_lightgrid_imins[2] + 1;
5488         count = loadmodel->brushq3.num_lightgrid_isize[0] * loadmodel->brushq3.num_lightgrid_isize[1] * loadmodel->brushq3.num_lightgrid_isize[2];
5489         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]);
5490         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]);
5491
5492         // if lump is empty there is nothing to load, we can deal with that in the LightPoint code
5493         if (l->filelen)
5494         {
5495                 if (l->filelen < count * (int)sizeof(*in))
5496                         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]);
5497                 if (l->filelen != count * (int)sizeof(*in))
5498                         Con_Printf("Mod_Q3BSP_LoadLightGrid: Warning: calculated lightgrid size %i bytes does not match lump size %i\n", (int)(count * sizeof(*in)), l->filelen);
5499                 out = (q3dlightgrid_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
5500                 loadmodel->brushq3.data_lightgrid = out;
5501                 loadmodel->brushq3.num_lightgrid = count;
5502                 // no swapping or validation necessary
5503                 memcpy(out, in, count * (int)sizeof(*out));
5504         }
5505 }
5506
5507 static void Mod_Q3BSP_LoadPVS(lump_t *l)
5508 {
5509         q3dpvs_t *in;
5510         int totalchains;
5511
5512         if (l->filelen == 0)
5513         {
5514                 int i;
5515                 // unvised maps often have cluster indices even without pvs, so check
5516                 // leafs to find real number of clusters
5517                 loadmodel->brush.num_pvsclusters = 1;
5518                 for (i = 0;i < loadmodel->brush.num_leafs;i++)
5519                         loadmodel->brush.num_pvsclusters = max(loadmodel->brush.num_pvsclusters, loadmodel->brush.data_leafs[i].clusterindex + 1);
5520
5521                 // create clusters
5522                 loadmodel->brush.num_pvsclusterbytes = (loadmodel->brush.num_pvsclusters + 7) / 8;
5523                 totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5524                 loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5525                 memset(loadmodel->brush.data_pvsclusters, 0xFF, totalchains);
5526                 return;
5527         }
5528
5529         in = (q3dpvs_t *)(mod_base + l->fileofs);
5530         if (l->filelen < 9)
5531                 Host_Error("Mod_Q3BSP_LoadPVS: funny lump size in %s",loadmodel->name);
5532
5533         loadmodel->brush.num_pvsclusters = LittleLong(in->numclusters);
5534         loadmodel->brush.num_pvsclusterbytes = LittleLong(in->chainlength);
5535         if (loadmodel->brush.num_pvsclusterbytes < ((loadmodel->brush.num_pvsclusters + 7) / 8))
5536                 Host_Error("Mod_Q3BSP_LoadPVS: (chainlength = %i) < ((numclusters = %i) + 7) / 8", loadmodel->brush.num_pvsclusterbytes, loadmodel->brush.num_pvsclusters);
5537         totalchains = loadmodel->brush.num_pvsclusterbytes * loadmodel->brush.num_pvsclusters;
5538         if (l->filelen < totalchains + (int)sizeof(*in))
5539                 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);
5540
5541         loadmodel->brush.data_pvsclusters = (unsigned char *)Mem_Alloc(loadmodel->mempool, totalchains);
5542         memcpy(loadmodel->brush.data_pvsclusters, (unsigned char *)(in + 1), totalchains);
5543 }
5544
5545 static void Mod_Q3BSP_LightPoint(model_t *model, const vec3_t p, vec3_t ambientcolor, vec3_t diffusecolor, vec3_t diffusenormal)
5546 {
5547         int i, j, k, index[3];
5548         float transformed[3], blend1, blend2, blend, yaw, pitch, sinpitch, stylescale;
5549         q3dlightgrid_t *a, *s;
5550
5551         // scale lighting by lightstyle[0] so that darkmode in dpmod works properly
5552         stylescale = r_refdef.lightstylevalue[0] * (1.0f / 264.0f);
5553
5554         if (!model->brushq3.num_lightgrid)
5555         {
5556                 ambientcolor[0] = stylescale;
5557                 ambientcolor[1] = stylescale;
5558                 ambientcolor[2] = stylescale;
5559                 return;
5560         }
5561
5562         Matrix4x4_Transform(&model->brushq3.num_lightgrid_indexfromworld, p, transformed);
5563         //Matrix4x4_Print(&model->brushq3.num_lightgrid_indexfromworld);
5564         //Con_Printf("%f %f %f transformed %f %f %f clamped ", p[0], p[1], p[2], transformed[0], transformed[1], transformed[2]);
5565         transformed[0] = bound(0, transformed[0], model->brushq3.num_lightgrid_isize[0] - 1);
5566         transformed[1] = bound(0, transformed[1], model->brushq3.num_lightgrid_isize[1] - 1);
5567         transformed[2] = bound(0, transformed[2], model->brushq3.num_lightgrid_isize[2] - 1);
5568         index[0] = (int)floor(transformed[0]);
5569         index[1] = (int)floor(transformed[1]);
5570         index[2] = (int)floor(transformed[2]);
5571         //Con_Printf("%f %f %f index %i %i %i:\n", transformed[0], transformed[1], transformed[2], index[0], index[1], index[2]);
5572
5573         // now lerp the values
5574         VectorClear(diffusenormal);
5575         a = &model->brushq3.data_lightgrid[(index[2] * model->brushq3.num_lightgrid_isize[1] + index[1]) * model->brushq3.num_lightgrid_isize[0] + index[0]];
5576         for (k = 0;k < 2;k++)
5577         {
5578                 blend1 = (k ? (transformed[2] - index[2]) : (1 - (transformed[2] - index[2])));
5579                 if (blend1 < 0.001f || index[2] + k >= model->brushq3.num_lightgrid_isize[2])
5580                         continue;
5581                 for (j = 0;j < 2;j++)
5582                 {
5583                         blend2 = blend1 * (j ? (transformed[1] - index[1]) : (1 - (transformed[1] - index[1])));
5584                         if (blend2 < 0.001f || index[1] + j >= model->brushq3.num_lightgrid_isize[1])
5585                                 continue;
5586                         for (i = 0;i < 2;i++)
5587                         {
5588                                 blend = blend2 * (i ? (transformed[0] - index[0]) : (1 - (transformed[0] - index[0]))) * stylescale;
5589                                 if (blend < 0.001f || index[0] + i >= model->brushq3.num_lightgrid_isize[0])
5590                                         continue;
5591                                 s = a + (k * model->brushq3.num_lightgrid_isize[1] + j) * model->brushq3.num_lightgrid_isize[0] + i;
5592                                 VectorMA(ambientcolor, blend * (1.0f / 128.0f), s->ambientrgb, ambientcolor);
5593                                 VectorMA(diffusecolor, blend * (1.0f / 128.0f), s->diffusergb, diffusecolor);
5594                                 pitch = s->diffusepitch * M_PI / 128;
5595                                 yaw = s->diffuseyaw * M_PI / 128;
5596                                 sinpitch = sin(pitch);
5597                                 diffusenormal[0] += blend * (cos(yaw) * sinpitch);
5598                                 diffusenormal[1] += blend * (sin(yaw) * sinpitch);
5599                                 diffusenormal[2] += blend * (cos(pitch));
5600                                 //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)));
5601                         }
5602                 }
5603         }
5604
5605         // normalize the light direction before turning
5606         VectorNormalize(diffusenormal);
5607         //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]);
5608 }
5609
5610 static void Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace_t *trace, model_t *model, mnode_t *node, const vec3_t point, int markframe)
5611 {
5612         int i;
5613         mleaf_t *leaf;
5614         colbrushf_t *brush;
5615         // find which leaf the point is in
5616         while (node->plane)
5617                 node = node->children[DotProduct(point, node->plane->normal) < node->plane->dist];
5618         // point trace the brushes
5619         leaf = (mleaf_t *)node;
5620         for (i = 0;i < leaf->numleafbrushes;i++)
5621         {
5622                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5623                 if (brush && brush->markframe != markframe && BoxesOverlap(point, point, brush->mins, brush->maxs))
5624                 {
5625                         brush->markframe = markframe;
5626                         Collision_TracePointBrushFloat(trace, point, brush);
5627                 }
5628         }
5629         // can't do point traces on curves (they have no thickness)
5630 }
5631
5632 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)
5633 {
5634         int i, startside, endside;
5635         float dist1, dist2, midfrac, mid[3], nodesegmentmins[3], nodesegmentmaxs[3];
5636         mleaf_t *leaf;
5637         msurface_t *surface;
5638         mplane_t *plane;
5639         colbrushf_t *brush;
5640         // walk the tree until we hit a leaf, recursing for any split cases
5641         while (node->plane)
5642         {
5643                 // abort if this part of the bsp tree can not be hit by this trace
5644 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5645 //                      return;
5646                 plane = node->plane;
5647                 // axial planes are much more common than non-axial, so an optimized
5648                 // axial case pays off here
5649                 if (plane->type < 3)
5650                 {
5651                         dist1 = start[plane->type] - plane->dist;
5652                         dist2 = end[plane->type] - plane->dist;
5653                 }
5654                 else
5655                 {
5656                         dist1 = DotProduct(start, plane->normal) - plane->dist;
5657                         dist2 = DotProduct(end, plane->normal) - plane->dist;
5658                 }
5659                 startside = dist1 < 0;
5660                 endside = dist2 < 0;
5661                 if (startside == endside)
5662                 {
5663                         // most of the time the line fragment is on one side of the plane
5664                         node = node->children[startside];
5665                 }
5666                 else
5667                 {
5668                         // line crosses node plane, split the line
5669                         dist1 = PlaneDiff(linestart, plane);
5670                         dist2 = PlaneDiff(lineend, plane);
5671                         midfrac = dist1 / (dist1 - dist2);
5672                         VectorLerp(linestart, midfrac, lineend, mid);
5673                         // take the near side first
5674                         Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[startside], start, mid, startfrac, midfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5675                         // if we found an impact on the front side, don't waste time
5676                         // exploring the far side
5677                         if (midfrac <= trace->realfraction)
5678                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, node->children[endside], mid, end, midfrac, endfrac, linestart, lineend, markframe, segmentmins, segmentmaxs);
5679                         return;
5680                 }
5681         }
5682         // abort if this part of the bsp tree can not be hit by this trace
5683 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5684 //              return;
5685         // hit a leaf
5686         nodesegmentmins[0] = min(start[0], end[0]) - 1;
5687         nodesegmentmins[1] = min(start[1], end[1]) - 1;
5688         nodesegmentmins[2] = min(start[2], end[2]) - 1;
5689         nodesegmentmaxs[0] = max(start[0], end[0]) + 1;
5690         nodesegmentmaxs[1] = max(start[1], end[1]) + 1;
5691         nodesegmentmaxs[2] = max(start[2], end[2]) + 1;
5692         // line trace the brushes
5693         leaf = (mleaf_t *)node;
5694         for (i = 0;i < leaf->numleafbrushes;i++)
5695         {
5696                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5697                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5698                 {
5699                         brush->markframe = markframe;
5700                         Collision_TraceLineBrushFloat(trace, linestart, lineend, brush, brush);
5701                 }
5702         }
5703         // can't do point traces on curves (they have no thickness)
5704         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer && !VectorCompare(start, end))
5705         {
5706                 // line trace the curves
5707                 for (i = 0;i < leaf->numleafsurfaces;i++)
5708                 {
5709                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5710                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5711                         {
5712                                 surface->collisionmarkframe = markframe;
5713                                 Collision_TraceLineTriangleMeshFloat(trace, linestart, lineend, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5714                         }
5715                 }
5716         }
5717 }
5718
5719 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)
5720 {
5721         int i;
5722         int sides;
5723         mleaf_t *leaf;
5724         colbrushf_t *brush;
5725         msurface_t *surface;
5726         mplane_t *plane;
5727         float nodesegmentmins[3], nodesegmentmaxs[3];
5728         // walk the tree until we hit a leaf, recursing for any split cases
5729         while (node->plane)
5730         {
5731                 // abort if this part of the bsp tree can not be hit by this trace
5732 //              if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5733 //                      return;
5734                 plane = node->plane;
5735                 // axial planes are much more common than non-axial, so an optimized
5736                 // axial case pays off here
5737                 if (plane->type < 3)
5738                 {
5739                         // this is an axial plane, compare bounding box directly to it and
5740                         // recurse sides accordingly
5741                         // recurse down node sides
5742                         // use an inlined axial BoxOnPlaneSide to slightly reduce overhead
5743                         //sides = BoxOnPlaneSide(nodesegmentmins, nodesegmentmaxs, plane);
5744                         //sides = ((segmentmaxs[plane->type] >= plane->dist) | ((segmentmins[plane->type] < plane->dist) << 1));
5745                         sides = ((segmentmaxs[plane->type] >= plane->dist) + ((segmentmins[plane->type] < plane->dist) * 2));
5746                 }
5747                 else
5748                 {
5749                         // this is a non-axial plane, so check if the start and end boxes
5750                         // are both on one side of the plane to handle 'diagonal' cases
5751                         sides = BoxOnPlaneSide(thisbrush_start->mins, thisbrush_start->maxs, plane) | BoxOnPlaneSide(thisbrush_end->mins, thisbrush_end->maxs, plane);
5752                 }
5753                 if (sides == 3)
5754                 {
5755                         // segment crosses plane
5756                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, node->children[0], thisbrush_start, thisbrush_end, markframe, segmentmins, segmentmaxs);
5757                         sides = 2;
5758                 }
5759                 // if sides == 0 then the trace itself is bogus (Not A Number values),
5760                 // in this case we simply pretend the trace hit nothing
5761                 if (sides == 0)
5762                         return; // ERROR: NAN bounding box!
5763                 // take whichever side the segment box is on
5764                 node = node->children[sides - 1];
5765         }
5766         // abort if this part of the bsp tree can not be hit by this trace
5767 //      if (!(node->combinedsupercontents & trace->hitsupercontentsmask))
5768 //              return;
5769         nodesegmentmins[0] = max(segmentmins[0], node->mins[0] - 1);
5770         nodesegmentmins[1] = max(segmentmins[1], node->mins[1] - 1);
5771         nodesegmentmins[2] = max(segmentmins[2], node->mins[2] - 1);
5772         nodesegmentmaxs[0] = min(segmentmaxs[0], node->maxs[0] + 1);
5773         nodesegmentmaxs[1] = min(segmentmaxs[1], node->maxs[1] + 1);
5774         nodesegmentmaxs[2] = min(segmentmaxs[2], node->maxs[2] + 1);
5775         // hit a leaf
5776         leaf = (mleaf_t *)node;
5777         for (i = 0;i < leaf->numleafbrushes;i++)
5778         {
5779                 brush = model->brush.data_brushes[leaf->firstleafbrush[i]].colbrushf;
5780                 if (brush && brush->markframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, brush->mins, brush->maxs))
5781                 {
5782                         brush->markframe = markframe;
5783                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush, brush);
5784                 }
5785         }
5786         if (leaf->containscollisionsurfaces && mod_q3bsp_curves_collisions.integer)
5787         {
5788                 for (i = 0;i < leaf->numleafsurfaces;i++)
5789                 {
5790                         surface = model->data_surfaces + leaf->firstleafsurface[i];
5791                         if (surface->num_collisiontriangles && surface->collisionmarkframe != markframe && BoxesOverlap(nodesegmentmins, nodesegmentmaxs, surface->mins, surface->maxs))
5792                         {
5793                                 surface->collisionmarkframe = markframe;
5794                                 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);
5795                         }
5796                 }
5797         }
5798 }
5799
5800 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)
5801 {
5802         int i;
5803         float segmentmins[3], segmentmaxs[3];
5804         static int markframe = 0;
5805         msurface_t *surface;
5806         q3mbrush_t *brush;
5807         memset(trace, 0, sizeof(*trace));
5808         trace->fraction = 1;
5809         trace->realfraction = 1;
5810         trace->hitsupercontentsmask = hitsupercontentsmask;
5811         if (mod_q3bsp_optimizedtraceline.integer && VectorLength2(boxmins) + VectorLength2(boxmaxs) == 0)
5812         {
5813                 if (VectorCompare(start, end))
5814                 {
5815                         // point trace
5816                         if (model->brush.submodel)
5817                         {
5818                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5819                                         if (brush->colbrushf)
5820                                                 Collision_TracePointBrushFloat(trace, start, brush->colbrushf);
5821                         }
5822                         else
5823                                 Mod_Q3BSP_TracePoint_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, ++markframe);
5824                 }
5825                 else
5826                 {
5827                         // line trace
5828                         segmentmins[0] = min(start[0], end[0]) - 1;
5829                         segmentmins[1] = min(start[1], end[1]) - 1;
5830                         segmentmins[2] = min(start[2], end[2]) - 1;
5831                         segmentmaxs[0] = max(start[0], end[0]) + 1;
5832                         segmentmaxs[1] = max(start[1], end[1]) + 1;
5833                         segmentmaxs[2] = max(start[2], end[2]) + 1;
5834                         if (model->brush.submodel)
5835                         {
5836                                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5837                                         if (brush->colbrushf)
5838                                                 Collision_TraceLineBrushFloat(trace, start, end, brush->colbrushf, brush->colbrushf);
5839                                 if (mod_q3bsp_curves_collisions.integer)
5840                                         for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5841                                                 if (surface->num_collisiontriangles)
5842                                                         Collision_TraceLineTriangleMeshFloat(trace, start, end, surface->num_collisiontriangles, surface->data_collisionelement3i, surface->data_collisionvertex3f, surface->texture->supercontents, surface->texture->surfaceflags, surface->texture, segmentmins, segmentmaxs);
5843                         }
5844                         else
5845                                 Mod_Q3BSP_TraceLine_RecursiveBSPNode(trace, model, model->brush.data_nodes, start, end, 0, 1, start, end, ++markframe, segmentmins, segmentmaxs);
5846                 }
5847         }
5848         else
5849         {
5850                 // box trace, performed as brush trace
5851                 colbrushf_t *thisbrush_start, *thisbrush_end;
5852                 vec3_t boxstartmins, boxstartmaxs, boxendmins, boxendmaxs;
5853                 segmentmins[0] = min(start[0], end[0]) + boxmins[0] - 1;
5854                 segmentmins[1] = min(start[1], end[1]) + boxmins[1] - 1;
5855                 segmentmins[2] = min(start[2], end[2]) + boxmins[2] - 1;
5856                 segmentmaxs[0] = max(start[0], end[0]) + boxmaxs[0] + 1;
5857                 segmentmaxs[1] = max(start[1], end[1]) + boxmaxs[1] + 1;
5858                 segmentmaxs[2] = max(start[2], end[2]) + boxmaxs[2] + 1;
5859                 VectorAdd(start, boxmins, boxstartmins);
5860                 VectorAdd(start, boxmaxs, boxstartmaxs);
5861                 VectorAdd(end, boxmins, boxendmins);
5862                 VectorAdd(end, boxmaxs, boxendmaxs);
5863                 thisbrush_start = Collision_BrushForBox(&identitymatrix, boxstartmins, boxstartmaxs, 0, 0, NULL);
5864                 thisbrush_end = Collision_BrushForBox(&identitymatrix, boxendmins, boxendmaxs, 0, 0, NULL);
5865                 if (model->brush.submodel)
5866                 {
5867                         for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
5868                                 if (brush->colbrushf)
5869                                         Collision_TraceBrushBrushFloat(trace, thisbrush_start, thisbrush_end, brush->colbrushf, brush->colbrushf);
5870                         if (mod_q3bsp_curves_collisions.integer)
5871                                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
5872                                         if (surface->num_collisiontriangles)
5873                                                 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);
5874                 }
5875                 else
5876                         Mod_Q3BSP_TraceBrush_RecursiveBSPNode(trace, model, model->brush.data_nodes, thisbrush_start, thisbrush_end, ++markframe, segmentmins, segmentmaxs);
5877         }
5878 }
5879
5880 static int Mod_Q3BSP_SuperContentsFromNativeContents(model_t *model, int nativecontents)
5881 {
5882         int supercontents = 0;
5883         if (nativecontents & CONTENTSQ3_SOLID)
5884                 supercontents |= SUPERCONTENTS_SOLID;
5885         if (nativecontents & CONTENTSQ3_WATER)
5886                 supercontents |= SUPERCONTENTS_WATER;
5887         if (nativecontents & CONTENTSQ3_SLIME)
5888                 supercontents |= SUPERCONTENTS_SLIME;
5889         if (nativecontents & CONTENTSQ3_LAVA)
5890                 supercontents |= SUPERCONTENTS_LAVA;
5891         if (nativecontents & CONTENTSQ3_BODY)
5892                 supercontents |= SUPERCONTENTS_BODY;
5893         if (nativecontents & CONTENTSQ3_CORPSE)
5894                 supercontents |= SUPERCONTENTS_CORPSE;
5895         if (nativecontents & CONTENTSQ3_NODROP)
5896                 supercontents |= SUPERCONTENTS_NODROP;
5897         if (nativecontents & CONTENTSQ3_PLAYERCLIP)
5898                 supercontents |= SUPERCONTENTS_PLAYERCLIP;
5899         if (nativecontents & CONTENTSQ3_MONSTERCLIP)
5900                 supercontents |= SUPERCONTENTS_MONSTERCLIP;
5901         if (nativecontents & CONTENTSQ3_DONOTENTER)
5902                 supercontents |= SUPERCONTENTS_DONOTENTER;
5903         return supercontents;
5904 }
5905
5906 static int Mod_Q3BSP_NativeContentsFromSuperContents(model_t *model, int supercontents)
5907 {
5908         int nativecontents = 0;
5909         if (supercontents & SUPERCONTENTS_SOLID)
5910                 nativecontents |= CONTENTSQ3_SOLID;
5911         if (supercontents & SUPERCONTENTS_WATER)
5912                 nativecontents |= CONTENTSQ3_WATER;
5913         if (supercontents & SUPERCONTENTS_SLIME)
5914                 nativecontents |= CONTENTSQ3_SLIME;
5915         if (supercontents & SUPERCONTENTS_LAVA)
5916                 nativecontents |= CONTENTSQ3_LAVA;
5917         if (supercontents & SUPERCONTENTS_BODY)
5918                 nativecontents |= CONTENTSQ3_BODY;
5919         if (supercontents & SUPERCONTENTS_CORPSE)
5920                 nativecontents |= CONTENTSQ3_CORPSE;
5921         if (supercontents & SUPERCONTENTS_NODROP)
5922                 nativecontents |= CONTENTSQ3_NODROP;
5923         if (supercontents & SUPERCONTENTS_PLAYERCLIP)
5924                 nativecontents |= CONTENTSQ3_PLAYERCLIP;
5925         if (supercontents & SUPERCONTENTS_MONSTERCLIP)
5926                 nativecontents |= CONTENTSQ3_MONSTERCLIP;
5927         if (supercontents & SUPERCONTENTS_DONOTENTER)
5928                 nativecontents |= CONTENTSQ3_DONOTENTER;
5929         return nativecontents;
5930 }
5931
5932 void Mod_Q3BSP_RecursiveFindNumLeafs(mnode_t *node)
5933 {
5934         int numleafs;
5935         while (node->plane)
5936         {
5937                 Mod_Q3BSP_RecursiveFindNumLeafs(node->children[0]);
5938                 node = node->children[1];
5939         }
5940         numleafs = ((mleaf_t *)node - loadmodel->brush.data_leafs) + 1;
5941         if (loadmodel->brush.num_leafs < numleafs)
5942                 loadmodel->brush.num_leafs = numleafs;
5943 }
5944
5945 void Mod_Q3BSP_Load(model_t *mod, void *buffer, void *bufferend)
5946 {
5947         int i, j, numshadowmeshtriangles;
5948         q3dheader_t *header;
5949         float corner[3], yawradius, modelradius;
5950         msurface_t *surface;
5951
5952         mod->type = mod_brushq3;
5953         mod->numframes = 2; // although alternate textures are not supported it is annoying to complain about no such frame 1
5954         mod->numskins = 1;
5955
5956         header = (q3dheader_t *)buffer;
5957
5958         i = LittleLong(header->version);
5959         if (i != Q3BSPVERSION)
5960                 Host_Error("Mod_Q3BSP_Load: %s has wrong version number (%i, should be %i)", mod->name, i, Q3BSPVERSION);
5961         mod->brush.ishlbsp = false;
5962         mod->brush.ismcbsp = false;
5963         if (loadmodel->isworldmodel)
5964         {
5965                 Cvar_SetValue("halflifebsp", mod->brush.ishlbsp);
5966                 Cvar_SetValue("mcbsp", mod->brush.ismcbsp);
5967         }
5968
5969         mod->soundfromcenter = true;
5970         mod->TraceBox = Mod_Q3BSP_TraceBox;
5971         mod->brush.TraceLineOfSight = Mod_Q1BSP_TraceLineOfSight;
5972         mod->brush.SuperContentsFromNativeContents = Mod_Q3BSP_SuperContentsFromNativeContents;
5973         mod->brush.NativeContentsFromSuperContents = Mod_Q3BSP_NativeContentsFromSuperContents;
5974         mod->brush.GetPVS = Mod_Q1BSP_GetPVS;
5975         mod->brush.FatPVS = Mod_Q1BSP_FatPVS;
5976         mod->brush.BoxTouchingPVS = Mod_Q1BSP_BoxTouchingPVS;
5977         mod->brush.BoxTouchingLeafPVS = Mod_Q1BSP_BoxTouchingLeafPVS;
5978         mod->brush.BoxTouchingVisibleLeafs = Mod_Q1BSP_BoxTouchingVisibleLeafs;
5979         mod->brush.FindBoxClusters = Mod_Q1BSP_FindBoxClusters;
5980         mod->brush.LightPoint = Mod_Q3BSP_LightPoint;
5981         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
5982         mod->brush.PointInLeaf = Mod_Q1BSP_PointInLeaf;
5983         mod->Draw = R_Q1BSP_Draw;
5984         mod->GetLightInfo = R_Q1BSP_GetLightInfo;
5985         mod->CompileShadowVolume = R_Q1BSP_CompileShadowVolume;
5986         mod->DrawShadowVolume = R_Q1BSP_DrawShadowVolume;
5987         mod->DrawLight = R_Q1BSP_DrawLight;
5988
5989         mod_base = (unsigned char *)header;
5990
5991         // swap all the lumps
5992         header->ident = LittleLong(header->ident);
5993         header->version = LittleLong(header->version);
5994         for (i = 0;i < Q3HEADER_LUMPS;i++)
5995         {
5996                 header->lumps[i].fileofs = LittleLong(header->lumps[i].fileofs);
5997                 header->lumps[i].filelen = LittleLong(header->lumps[i].filelen);
5998         }
5999
6000         mod->brush.qw_md4sum = 0;
6001         mod->brush.qw_md4sum2 = 0;
6002         for (i = 0;i < Q3HEADER_LUMPS;i++)
6003         {
6004                 if (i == Q3LUMP_ENTITIES)
6005                         continue;
6006                 mod->brush.qw_md4sum ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6007                 if (i == Q3LUMP_PVS || i == Q3LUMP_LEAFS || i == Q3LUMP_NODES)
6008                         continue;
6009                 mod->brush.qw_md4sum2 ^= Com_BlockChecksum(mod_base + header->lumps[i].fileofs, header->lumps[i].filelen);
6010         }
6011
6012         Mod_Q3BSP_LoadEntities(&header->lumps[Q3LUMP_ENTITIES]);
6013         Mod_Q3BSP_LoadTextures(&header->lumps[Q3LUMP_TEXTURES]);
6014         Mod_Q3BSP_LoadPlanes(&header->lumps[Q3LUMP_PLANES]);
6015         Mod_Q3BSP_LoadBrushSides(&header->lumps[Q3LUMP_BRUSHSIDES]);
6016         Mod_Q3BSP_LoadBrushes(&header->lumps[Q3LUMP_BRUSHES]);
6017         Mod_Q3BSP_LoadEffects(&header->lumps[Q3LUMP_EFFECTS]);
6018         Mod_Q3BSP_LoadVertices(&header->lumps[Q3LUMP_VERTICES]);
6019         Mod_Q3BSP_LoadTriangles(&header->lumps[Q3LUMP_TRIANGLES]);
6020         Mod_Q3BSP_LoadLightmaps(&header->lumps[Q3LUMP_LIGHTMAPS], &header->lumps[Q3LUMP_FACES]);
6021         Mod_Q3BSP_LoadFaces(&header->lumps[Q3LUMP_FACES]);
6022         Mod_Q3BSP_LoadModels(&header->lumps[Q3LUMP_MODELS]);
6023         Mod_Q3BSP_LoadLeafBrushes(&header->lumps[Q3LUMP_LEAFBRUSHES]);
6024         Mod_Q3BSP_LoadLeafFaces(&header->lumps[Q3LUMP_LEAFFACES]);
6025         Mod_Q3BSP_LoadLeafs(&header->lumps[Q3LUMP_LEAFS]);
6026         Mod_Q3BSP_LoadNodes(&header->lumps[Q3LUMP_NODES]);
6027         Mod_Q3BSP_LoadLightGrid(&header->lumps[Q3LUMP_LIGHTGRID]);
6028         Mod_Q3BSP_LoadPVS(&header->lumps[Q3LUMP_PVS]);
6029         loadmodel->brush.numsubmodels = loadmodel->brushq3.num_models;
6030
6031         // the MakePortals code works fine on the q3bsp data as well
6032         Mod_Q1BSP_MakePortals();
6033
6034         // FIXME: shader alpha should replace r_wateralpha support in q3bsp
6035         loadmodel->brush.supportwateralpha = true;
6036
6037         // make a single combined shadow mesh to allow optimized shadow volume creation
6038         numshadowmeshtriangles = 0;
6039         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6040         {
6041                 surface->num_firstshadowmeshtriangle = numshadowmeshtriangles;
6042                 numshadowmeshtriangles += surface->num_triangles;
6043         }
6044         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Begin(loadmodel->mempool, numshadowmeshtriangles * 3, numshadowmeshtriangles, NULL, NULL, NULL, false, false, true);
6045         for (j = 0, surface = loadmodel->data_surfaces;j < loadmodel->num_surfaces;j++, surface++)
6046                 if (surface->num_triangles > 0)
6047                         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));
6048         loadmodel->brush.shadowmesh = Mod_ShadowMesh_Finish(loadmodel->mempool, loadmodel->brush.shadowmesh, false, true, false);
6049         Mod_BuildTriangleNeighbors(loadmodel->brush.shadowmesh->neighbor3i, loadmodel->brush.shadowmesh->element3i, loadmodel->brush.shadowmesh->numtriangles);
6050
6051         loadmodel->brush.num_leafs = 0;
6052         Mod_Q3BSP_RecursiveFindNumLeafs(loadmodel->brush.data_nodes);
6053
6054         if (loadmodel->isworldmodel)
6055         {
6056                 // clear out any stale submodels or worldmodels lying around
6057                 // if we did this clear before now, an error might abort loading and
6058                 // leave things in a bad state
6059                 Mod_RemoveStaleWorldModels(loadmodel);
6060         }
6061
6062         mod = loadmodel;
6063         for (i = 0;i < loadmodel->brush.numsubmodels;i++)
6064         {
6065                 if (i > 0)
6066                 {
6067                         char name[10];
6068                         // LordHavoc: only register submodels if it is the world
6069                         // (prevents external bsp models from replacing world submodels with
6070                         //  their own)
6071                         if (!loadmodel->isworldmodel)
6072                                 continue;
6073                         // duplicate the basic information
6074                         sprintf(name, "*%i", i);
6075                         mod = Mod_FindName(name);
6076                         *mod = *loadmodel;
6077                         strlcpy(mod->name, name, sizeof(mod->name));
6078                         // textures and memory belong to the main model
6079                         mod->texturepool = NULL;
6080                         mod->mempool = NULL;
6081                         mod->brush.TraceLineOfSight = NULL;
6082                         mod->brush.GetPVS = NULL;
6083                         mod->brush.FatPVS = NULL;
6084                         mod->brush.BoxTouchingPVS = NULL;
6085                         mod->brush.BoxTouchingLeafPVS = NULL;
6086                         mod->brush.BoxTouchingVisibleLeafs = NULL;
6087                         mod->brush.FindBoxClusters = NULL;
6088                         mod->brush.LightPoint = NULL;
6089                         mod->brush.FindNonSolidLocation = Mod_Q1BSP_FindNonSolidLocation;
6090                 }
6091                 mod->brush.submodel = i;
6092
6093                 // make the model surface list (used by shadowing/lighting)
6094                 mod->firstmodelsurface = mod->brushq3.data_models[i].firstface;
6095                 mod->nummodelsurfaces = mod->brushq3.data_models[i].numfaces;
6096                 mod->firstmodelbrush = mod->brushq3.data_models[i].firstbrush;
6097                 mod->nummodelbrushes = mod->brushq3.data_models[i].numbrushes;
6098                 mod->surfacelist = (int *)Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->surfacelist));
6099                 for (j = 0;j < mod->nummodelsurfaces;j++)
6100                         mod->surfacelist[j] = mod->firstmodelsurface + j;
6101
6102                 VectorCopy(mod->brushq3.data_models[i].mins, mod->normalmins);
6103                 VectorCopy(mod->brushq3.data_models[i].maxs, mod->normalmaxs);
6104                 corner[0] = max(fabs(mod->normalmins[0]), fabs(mod->normalmaxs[0]));
6105                 corner[1] = max(fabs(mod->normalmins[1]), fabs(mod->normalmaxs[1]));
6106                 corner[2] = max(fabs(mod->normalmins[2]), fabs(mod->normalmaxs[2]));
6107                 modelradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]+corner[2]*corner[2]);
6108                 yawradius = sqrt(corner[0]*corner[0]+corner[1]*corner[1]);
6109                 mod->rotatedmins[0] = mod->rotatedmins[1] = mod->rotatedmins[2] = -modelradius;
6110                 mod->rotatedmaxs[0] = mod->rotatedmaxs[1] = mod->rotatedmaxs[2] = modelradius;
6111                 mod->yawmaxs[0] = mod->yawmaxs[1] = yawradius;
6112                 mod->yawmins[0] = mod->yawmins[1] = -yawradius;
6113                 mod->yawmins[2] = mod->normalmins[2];
6114                 mod->yawmaxs[2] = mod->normalmaxs[2];
6115                 mod->radius = modelradius;
6116                 mod->radius2 = modelradius * modelradius;
6117
6118                 for (j = 0;j < mod->nummodelsurfaces;j++)
6119                         if (mod->data_surfaces[j + mod->firstmodelsurface].texture->surfaceflags & Q3SURFACEFLAG_SKY)
6120                                 break;
6121                 if (j < mod->nummodelsurfaces)
6122                         mod->DrawSky = R_Q1BSP_DrawSky;
6123                 else
6124                         mod->DrawSky = NULL;
6125         }
6126 }
6127
6128 void Mod_IBSP_Load(model_t *mod, void *buffer, void *bufferend)
6129 {
6130         int i = LittleLong(((int *)buffer)[1]);
6131         if (i == Q3BSPVERSION)
6132                 Mod_Q3BSP_Load(mod,buffer, bufferend);
6133         else if (i == Q2BSPVERSION)
6134                 Mod_Q2BSP_Load(mod,buffer, bufferend);
6135         else
6136                 Host_Error("Mod_IBSP_Load: unknown/unsupported version %i", i);
6137 }
6138
6139 void Mod_MAP_Load(model_t *mod, void *buffer, void *bufferend)
6140 {
6141         Host_Error("Mod_MAP_Load: not yet implemented");
6142 }
6143
6144 qboolean Mod_CanSeeBox_Trace(int numsamples, float t, model_t *model, vec3_t eye, vec3_t minsX, vec3_t maxsX)
6145 {
6146         // we already have done PVS culling at this point...
6147         // so we don't need to do it again.
6148
6149         int i;
6150         vec3_t testorigin, mins, maxs;
6151
6152         testorigin[0] = (minsX[0] + maxsX[0]) * 0.5;
6153         testorigin[1] = (minsX[1] + maxsX[1]) * 0.5;
6154         testorigin[2] = (minsX[2] + maxsX[2]) * 0.5;
6155
6156         if(model->brush.TraceLineOfSight(model, eye, testorigin))
6157                 return 1;
6158
6159         // expand the box a little
6160         mins[0] = (t+1) * minsX[0] - t * maxsX[0];
6161         maxs[0] = (t+1) * maxsX[0] - t * minsX[0];
6162         mins[1] = (t+1) * minsX[1] - t * maxsX[1];
6163         maxs[1] = (t+1) * maxsX[1] - t * minsX[1];
6164         mins[2] = (t+1) * minsX[2] - t * maxsX[2];
6165         maxs[2] = (t+1) * maxsX[2] - t * minsX[2];
6166
6167         for(i = 0; i != numsamples; ++i)
6168         {
6169                 testorigin[0] = lhrandom(mins[0], maxs[0]);
6170                 testorigin[1] = lhrandom(mins[1], maxs[1]);
6171                 testorigin[2] = lhrandom(mins[2], maxs[2]);
6172
6173                 if(model->brush.TraceLineOfSight(model, eye, testorigin))
6174                         return 1;
6175         }
6176
6177         return 0;
6178 }
6179