tools/quake3/q3map2/model.c

   1 /* -------------------------------------------------------------------------------
   2
   3 Copyright (C) 1999-2007 id Software, Inc. and contributors.
   4 For a list of contributors, see the accompanying CONTRIBUTORS file.
   5
   6 This file is part of GtkRadiant.
   7
   8 GtkRadiant is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 GtkRadiant is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GtkRadiant; if not, write to the Free Software
  20 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  21
  22 ----------------------------------------------------------------------------------
  23
  24 This code has been altered significantly from its original form, to support
  25 several games based on the Quake III Arena engine, in the form of "Q3Map2."
  26
  27 ------------------------------------------------------------------------------- */
  28
  29
  30
  31 /* marker */
  32 #define MODEL_C
  33
  34
  35
  36 /* dependencies */
  37 #include "q3map2.h"
  38
  39
  40
  41 /*
  42 PicoPrintFunc()
  43 callback for picomodel.lib
  44 */
  45
  46 void PicoPrintFunc( int level, const char *str )
  47 {
  48         if( str == NULL )
  49                 return;
  50         switch( level )
  51         {
  52                 case PICO_NORMAL:
  53                         Sys_Printf( "%s\n", str );
  54                         break;
  55
  56                 case PICO_VERBOSE:
  57                         Sys_FPrintf( SYS_VRB, "%s\n", str );
  58                         break;
  59
  60                 case PICO_WARNING:
  61                         Sys_Printf( "WARNING: %s\n", str );
  62                         break;
  63
  64                 case PICO_ERROR:
  65                         Sys_Printf( "ERROR: %s\n", str );
  66                         break;
  67
  68                 case PICO_FATAL:
  69                         Error( "ERROR: %s\n", str );
  70                         break;
  71         }
  72 }
  73
  74
  75
  76 /*
  77 PicoLoadFileFunc()
  78 callback for picomodel.lib
  79 */
  80
  81 void PicoLoadFileFunc( char *name, byte **buffer, int *bufSize )
  82 {
  83         *bufSize = vfsLoadFile( (const char*) name, (void**) buffer, 0 );
  84 }
  85
  86
  87
  88 /*
  89 FindModel() - ydnar
  90 finds an existing picoModel and returns a pointer to the picoModel_t struct or NULL if not found
  91 */
  92
  93 picoModel_t *FindModel( char *name, int frame )
  94 {
  95         int                     i;
  96
  97
  98         /* init */
  99         if( numPicoModels <= 0 )
 100                 memset( picoModels, 0, sizeof( picoModels ) );
 101
 102         /* dummy check */
 103         if( name == NULL || name[ 0 ] == '\0' )
 104                 return NULL;
 105
 106         /* search list */
 107         for( i = 0; i < MAX_MODELS; i++ )
 108         {
 109                 if( picoModels[ i ] != NULL &&
 110                         !strcmp( PicoGetModelName( picoModels[ i ] ), name ) &&
 111                         PicoGetModelFrameNum( picoModels[ i ] ) == frame )
 112                         return picoModels[ i ];
 113         }
 114
 115         /* no matching picoModel found */
 116         return NULL;
 117 }
 118
 119
 120
 121 /*
 122 LoadModel() - ydnar
 123 loads a picoModel and returns a pointer to the picoModel_t struct or NULL if not found
 124 */
 125
 126 picoModel_t *LoadModel( char *name, int frame )
 127 {
 128         int                             i;
 129         picoModel_t             *model, **pm;
 130
 131
 132         /* init */
 133         if( numPicoModels <= 0 )
 134                 memset( picoModels, 0, sizeof( picoModels ) );
 135
 136         /* dummy check */
 137         if( name == NULL || name[ 0 ] == '\0' )
 138                 return NULL;
 139
 140         /* try to find existing picoModel */
 141         model = FindModel( name, frame );
 142         if( model != NULL )
 143                 return model;
 144
 145         /* none found, so find first non-null picoModel */
 146         pm = NULL;
 147         for( i = 0; i < MAX_MODELS; i++ )
 148         {
 149                 if( picoModels[ i ] == NULL )
 150                 {
 151                         pm = &picoModels[ i ];
 152                         break;
 153                 }
 154         }
 155
 156         /* too many picoModels? */
 157         if( pm == NULL )
 158                 Error( "MAX_MODELS (%d) exceeded, there are too many model files referenced by the map.", MAX_MODELS );
 159
 160         /* attempt to parse model */
 161         *pm = PicoLoadModel( (char*) name, frame );
 162
 163         /* if loading failed, make a bogus model to silence the rest of the warnings */
 164         if( *pm == NULL )
 165         {
 166                 /* allocate a new model */
 167                 *pm = PicoNewModel();
 168                 if( *pm == NULL )
 169                         return NULL;
 170
 171                 /* set data */
 172                 PicoSetModelName( *pm, name );
 173                 PicoSetModelFrameNum( *pm, frame );
 174         }
 175
 176         /* debug code */
 177         #if 0
 178         {
 179                 int                             numSurfaces, numVertexes;
 180                 picoSurface_t   *ps;
 181
 182
 183                 Sys_Printf( "Model %s\n", name );
 184                 numSurfaces = PicoGetModelNumSurfaces( *pm );
 185                 for( i = 0; i < numSurfaces; i++ )
 186                 {
 187                         ps = PicoGetModelSurface( *pm, i );
 188                         numVertexes = PicoGetSurfaceNumVertexes( ps );
 189                         Sys_Printf( "Surface %d has %d vertexes\n", i, numVertexes );
 190                 }
 191         }
 192         #endif
 193
 194         /* set count */
 195         if( *pm != NULL )
 196                 numPicoModels++;
 197
 198         /* return the picoModel */
 199         return *pm;
 200 }
 201
 202
 203
 204 /*
 205 InsertModel() - ydnar
 206 adds a picomodel into the bsp
 207 */
 208
 209 void InsertModel( char *name, int frame, m4x4_t transform, remap_t *remap, shaderInfo_t *celShader, int eNum, int castShadows, int recvShadows, int spawnFlags, float lightmapScale )
 210 {
 211         int                                     i, j, k, s, numSurfaces;
 212         m4x4_t                          identity, nTransform;
 213         picoModel_t                     *model;
 214         picoShader_t            *shader;
 215         picoSurface_t           *surface;
 216         shaderInfo_t            *si;
 217         mapDrawSurface_t        *ds;
 218         bspDrawVert_t           *dv;
 219         char                            *picoShaderName;
 220         char                            shaderName[ MAX_QPATH ];
 221         picoVec_t                       *xyz, *normal, *st;
 222         byte                            *color;
 223         picoIndex_t                     *indexes;
 224         remap_t                         *rm, *glob;
 225         double                          normalEpsilon_save;
 226         double                          distanceEpsilon_save;
 227
 228
 229         /* get model */
 230         model = LoadModel( name, frame );
 231         if( model == NULL )
 232                 return;
 233
 234         /* handle null matrix */
 235         if( transform == NULL )
 236         {
 237                 m4x4_identity( identity );
 238                 transform = identity;
 239         }
 240
 241         /* hack: Stable-1_2 and trunk have differing row/column major matrix order
 242            this transpose is necessary with Stable-1_2
 243            uncomment the following line with old m4x4_t (non 1.3/spog_branch) code */
 244         //%     m4x4_transpose( transform );
 245
 246         /* create transform matrix for normals */
 247         memcpy( nTransform, transform, sizeof( m4x4_t ) );
 248         if( m4x4_invert( nTransform ) )
 249                 Sys_FPrintf( SYS_VRB, "WARNING: Can't invert model transform matrix, using transpose instead\n" );
 250         m4x4_transpose( nTransform );
 251
 252         /* fix bogus lightmap scale */
 253         if( lightmapScale <= 0.0f )
 254                 lightmapScale = 1.0f;
 255
 256         /* each surface on the model will become a new map drawsurface */
 257         numSurfaces = PicoGetModelNumSurfaces( model );
 258         //%     Sys_FPrintf( SYS_VRB, "Model %s has %d surfaces\n", name, numSurfaces );
 259         for( s = 0; s < numSurfaces; s++ )
 260         {
 261                 /* get surface */
 262                 surface = PicoGetModelSurface( model, s );
 263                 if( surface == NULL )
 264                         continue;
 265
 266                 /* only handle triangle surfaces initially (fixme: support patches) */
 267                 if( PicoGetSurfaceType( surface ) != PICO_TRIANGLES )
 268                         continue;
 269
 270                 /* fix the surface's normals */
 271                 PicoFixSurfaceNormals( surface );
 272
 273                 /* allocate a surface (ydnar: gs mods) */
 274                 ds = AllocDrawSurface( SURFACE_TRIANGLES );
 275                 ds->entityNum = eNum;
 276                 ds->castShadows = castShadows;
 277                 ds->recvShadows = recvShadows;
 278
 279                 /* get shader name */
 280         shader = PicoGetSurfaceShader( surface );
 281                 if( shader == NULL )
 282                         picoShaderName = "";
 283                 else
 284                         picoShaderName = PicoGetShaderName( shader );
 285
 286                 /* handle shader remapping */
 287                 glob = NULL;
 288                 for( rm = remap; rm != NULL; rm = rm->next )
 289                 {
 290                         if( rm->from[ 0 ] == '*' && rm->from[ 1 ] == '\0' )
 291                                 glob = rm;
 292                         else if( !Q_stricmp( picoShaderName, rm->from ) )
 293                         {
 294                                 Sys_FPrintf( SYS_VRB, "Remapping %s to %s\n", picoShaderName, rm->to );
 295                                 picoShaderName = rm->to;
 296                                 glob = NULL;
 297                                 break;
 298                         }
 299                 }
 300
 301                 if( glob != NULL )
 302                 {
 303                         Sys_FPrintf( SYS_VRB, "Globbing %s to %s\n", picoShaderName, glob->to );
 304                         picoShaderName = glob->to;
 305                 }
 306
 307                 /* shader renaming for sof2 */
 308                 if( renameModelShaders )
 309                 {
 310                         strcpy( shaderName, picoShaderName );
 311                         StripExtension( shaderName );
 312                         if( spawnFlags & 1 )
 313                                 strcat( shaderName, "_RMG_BSP" );
 314                         else
 315                                 strcat( shaderName, "_BSP" );
 316                         si = ShaderInfoForShader( shaderName );
 317                 }
 318                 else
 319                         si = ShaderInfoForShader( picoShaderName );
 320
 321                 /* set shader */
 322                 ds->shaderInfo = si;
 323
 324                 /* set lightmap scale */
 325                 ds->lightmapScale = lightmapScale;
 326
 327                 /* force to meta? */
 328                 if( (si != NULL && si->forceMeta) || (spawnFlags & 4) ) /* 3rd bit */
 329                         ds->type = SURFACE_FORCED_META;
 330
 331                 /* set particulars */
 332                 ds->numVerts = PicoGetSurfaceNumVertexes( surface );
 333                 ds->verts = safe_malloc( ds->numVerts * sizeof( ds->verts[ 0 ] ) );
 334                 memset( ds->verts, 0, ds->numVerts * sizeof( ds->verts[ 0 ] ) );
 335
 336                 ds->numIndexes = PicoGetSurfaceNumIndexes( surface );
 337                 ds->indexes = safe_malloc( ds->numIndexes * sizeof( ds->indexes[ 0 ] ) );
 338                 memset( ds->indexes, 0, ds->numIndexes * sizeof( ds->indexes[ 0 ] ) );
 339
 340                 /* copy vertexes */
 341                 for( i = 0; i < ds->numVerts; i++ )
 342                 {
 343                         /* get vertex */
 344                         dv = &ds->verts[ i ];
 345
 346                         /* xyz and normal */
 347                         xyz = PicoGetSurfaceXYZ( surface, i );
 348                         VectorCopy( xyz, dv->xyz );
 349                         m4x4_transform_point( transform, dv->xyz );
 350
 351                         normal = PicoGetSurfaceNormal( surface, i );
 352                         VectorCopy( normal, dv->normal );
 353                         m4x4_transform_normal( nTransform, dv->normal );
 354                         VectorNormalize( dv->normal, dv->normal );
 355
 356                         /* ydnar: tek-fu celshading support for flat shaded shit */
 357                         if( flat )
 358                         {
 359                                 dv->st[ 0 ] = si->stFlat[ 0 ];
 360                                 dv->st[ 1 ] = si->stFlat[ 1 ];
 361                         }
 362
 363                         /* ydnar: gs mods: added support for explicit shader texcoord generation */
 364                         else if( si->tcGen )
 365                         {
 366                                 /* project the texture */
 367                                 dv->st[ 0 ] = DotProduct( si->vecs[ 0 ], dv->xyz );
 368                                 dv->st[ 1 ] = DotProduct( si->vecs[ 1 ], dv->xyz );
 369                         }
 370
 371                         /* normal texture coordinates */
 372                         else
 373                         {
 374                                 st = PicoGetSurfaceST( surface, 0, i );
 375                                 dv->st[ 0 ] = st[ 0 ];
 376                                 dv->st[ 1 ] = st[ 1 ];
 377                         }
 378
 379                         /* set lightmap/color bits */
 380                         color = PicoGetSurfaceColor( surface, 0, i );
 381                         for( j = 0; j < MAX_LIGHTMAPS; j++ )
 382                         {
 383                                 dv->lightmap[ j ][ 0 ] = 0.0f;
 384                                 dv->lightmap[ j ][ 1 ] = 0.0f;
 385                                 dv->color[ j ][ 0 ] = color[ 0 ];
 386                                 dv->color[ j ][ 1 ] = color[ 1 ];
 387                                 dv->color[ j ][ 2 ] = color[ 2 ];
 388                                 dv->color[ j ][ 3 ] = color[ 3 ];
 389                         }
 390                 }
 391
 392                 /* copy indexes */
 393                 indexes = PicoGetSurfaceIndexes( surface, 0 );
 394                 for( i = 0; i < ds->numIndexes; i++ )
 395                         ds->indexes[ i ] = indexes[ i ];
 396
 397                 /* set cel shader */
 398                 ds->celShader = celShader;
 399
 400                 /* ydnar: giant hack land: generate clipping brushes for model triangles */
 401                 if( si->clipModel || (spawnFlags & 2) ) /* 2nd bit */
 402                 {
 403                         vec3_t          points[ 4 ], backs[ 3 ];
 404                         vec4_t          plane, reverse, pa, pb, pc;
 405
 406
 407                         /* temp hack */
 408                         if( !si->clipModel &&
 409                                 ((si->compileFlags & C_TRANSLUCENT) || !(si->compileFlags & C_SOLID)) )
 410                                 continue;
 411
 412                         /* walk triangle list */
 413                         for( i = 0; i < ds->numIndexes; i += 3 )
 414                         {
 415                                 /* overflow hack */
 416                                 AUTOEXPAND_BY_REALLOC(mapplanes, (nummapplanes+64) << 1, allocatedmapplanes, 1024);
 417
 418                                 /* make points and back points */
 419                                 for( j = 0; j < 3; j++ )
 420                                 {
 421                                         /* get vertex */
 422                                         dv = &ds->verts[ ds->indexes[ i + j ] ];
 423
 424                                         /* copy xyz */
 425                                         VectorCopy( dv->xyz, points[ j ] );
 426                                         VectorCopy( dv->xyz, backs[ j ] );
 427
 428                                         /* find nearest axial to normal and push back points opposite */
 429                                         /* note: this doesn't work as well as simply using the plane of the triangle, below */
 430                                         for( k = 0; k < 3; k++ )
 431                                         {
 432                                                 if( fabs( dv->normal[ k ] ) >= fabs( dv->normal[ (k + 1) % 3 ] ) &&
 433                                                         fabs( dv->normal[ k ] ) >= fabs( dv->normal[ (k + 2) % 3 ] ) )
 434                                                 {
 435                                                         backs[ j ][ k ] += dv->normal[ k ] < 0.0f ? 64.0f : -64.0f;
 436                                                         break;
 437                                                 }
 438                                         }
 439                                 }
 440
 441                                 VectorCopy( points[0], points[3] ); // for cyclic usage
 442
 443                                 /* make plane for triangle */
 444                                 // div0: add some extra spawnflags:
 445                                 //   0: snap normals to axial planes for extrusion
 446                                 //   8: extrude with the original normals
 447                                 //  16: extrude only with up/down normals (ideal for terrain)
 448                                 //  24: extrude by distance zero (may need engine changes)
 449                                 if( PlaneFromPoints( plane, points[ 0 ], points[ 1 ], points[ 2 ] ) )
 450                                 {
 451                                         vec3_t bestNormal;
 452                                         float backPlaneDistance = 2;
 453
 454                                         if(spawnFlags & 8) // use a DOWN normal
 455                                         {
 456                                                 if(spawnFlags & 16)
 457                                                 {
 458                                                         // 24: normal as is, and zero width (broken)
 459                                                         VectorCopy(plane, bestNormal);
 460                                                 }
 461                                                 else
 462                                                 {
 463                                                         // 8: normal as is
 464                                                         VectorCopy(plane, bestNormal);
 465                                                 }
 466                                         }
 467                                         else
 468                                         {
 469                                                 if(spawnFlags & 16)
 470                                                 {
 471                                                         // 16: UP/DOWN normal
 472                                                         VectorSet(bestNormal, 0, 0, (plane[2] >= 0 ? 1 : -1));
 473                                                 }
 474                                                 else
 475                                                 {
 476                                                         // 0: axial normal
 477                                                         if(fabs(plane[0]) > fabs(plane[1])) // x>y
 478                                                                 if(fabs(plane[1]) > fabs(plane[2])) // x>y, y>z
 479                                                                         VectorSet(bestNormal, (plane[0] >= 0 ? 1 : -1), 0, 0);
 480                                                                 else // x>y, z>=y
 481                                                                         if(fabs(plane[0]) > fabs(plane[2])) // x>z, z>=y
 482                                                                                 VectorSet(bestNormal, (plane[0] >= 0 ? 1 : -1), 0, 0);
 483                                                                         else // z>=x, x>y
 484                                                                                 VectorSet(bestNormal, 0, 0, (plane[2] >= 0 ? 1 : -1));
 485                                                         else // y>=x
 486                                                                 if(fabs(plane[1]) > fabs(plane[2])) // y>z, y>=x
 487                                                                         VectorSet(bestNormal, 0, (plane[1] >= 0 ? 1 : -1), 0);
 488                                                                 else // z>=y, y>=x
 489                                                                         VectorSet(bestNormal, 0, 0, (plane[2] >= 0 ? 1 : -1));
 490                                                 }
 491                                         }
 492
 493                                         /* build a brush */
 494                                         buildBrush = AllocBrush( 48 );
 495                                         buildBrush->entityNum = mapEntityNum;
 496                                         buildBrush->original = buildBrush;
 497                                         buildBrush->contentShader = si;
 498                                         buildBrush->compileFlags = si->compileFlags;
 499                                         buildBrush->contentFlags = si->contentFlags;
 500                                         normalEpsilon_save = normalEpsilon;
 501                                         distanceEpsilon_save = distanceEpsilon;
 502                                         if(si->compileFlags & C_STRUCTURAL) // allow forced structural brushes here
 503                                         {
 504                                                 buildBrush->detail = qfalse;
 505
 506                                                 // only allow EXACT matches when snapping for these (this is mostly for caulk brushes inside a model)
 507                                                 if(normalEpsilon > 0)
 508                                                         normalEpsilon = 0;
 509                                                 if(distanceEpsilon > 0)
 510                                                         distanceEpsilon = 0;
 511                                         }
 512                                         else
 513                                                 buildBrush->detail = qtrue;
 514
 515                                         /* regenerate back points */
 516                                         for( j = 0; j < 3; j++ )
 517                                         {
 518                                                 /* get vertex */
 519                                                 dv = &ds->verts[ ds->indexes[ i + j ] ];
 520
 521                                                 // shift by some units
 522                                                 VectorMA(dv->xyz, -64.0f, bestNormal, backs[j]); // 64 prevents roundoff errors a bit
 523                                         }
 524
 525                                         /* make back plane */
 526                                         VectorScale( plane, -1.0f, reverse );
 527                                         reverse[ 3 ] = -plane[ 3 ];
 528                                         if((spawnFlags & 24) != 24)
 529                                                 reverse[3] += DotProduct(bestNormal, plane) * backPlaneDistance;
 530                                         // that's at least sqrt(1/3) backPlaneDistance, unless in DOWN mode; in DOWN mode, we are screwed anyway if we encounter a plane that's perpendicular to the xy plane)
 531
 532                                         if( PlaneFromPoints( pa, points[ 2 ], points[ 1 ], backs[ 1 ] ) &&
 533                                                         PlaneFromPoints( pb, points[ 1 ], points[ 0 ], backs[ 0 ] ) &&
 534                                                         PlaneFromPoints( pc, points[ 0 ], points[ 2 ], backs[ 2 ] ) )
 535                                         {
 536                                                 /* set up brush sides */
 537                                                 buildBrush->numsides = 5;
 538                                                 buildBrush->sides[ 0 ].shaderInfo = si;
 539                                                 for( j = 1; j < buildBrush->numsides; j++ )
 540                                                         buildBrush->sides[ j ].shaderInfo = NULL; // don't emit these faces as draw surfaces, should make smaller BSPs; hope this works
 541
 542                                                 buildBrush->sides[ 0 ].planenum = FindFloatPlane( plane, plane[ 3 ], 3, points );
 543                                                 buildBrush->sides[ 1 ].planenum = FindFloatPlane( pa, pa[ 3 ], 2, &points[ 1 ] ); // pa contains points[1] and points[2]
 544                                                 buildBrush->sides[ 2 ].planenum = FindFloatPlane( pb, pb[ 3 ], 2, &points[ 0 ] ); // pb contains points[0] and points[1]
 545                                                 buildBrush->sides[ 3 ].planenum = FindFloatPlane( pc, pc[ 3 ], 2, &points[ 2 ] ); // pc contains points[2] and points[0] (copied to points[3]
 546                                                 buildBrush->sides[ 4 ].planenum = FindFloatPlane( reverse, reverse[ 3 ], 3, backs );
 547                                         }
 548                                         else
 549                                         {
 550                                                 free(buildBrush);
 551                                                 continue;
 552                                         }
 553
 554                                         normalEpsilon = normalEpsilon_save;
 555                                         distanceEpsilon = distanceEpsilon_save;
 556
 557                                         /* add to entity */
 558                                         if( CreateBrushWindings( buildBrush ) )
 559                                         {
 560                                                 AddBrushBevels();
 561                                                 //%     EmitBrushes( buildBrush, NULL, NULL );
 562                                                 buildBrush->next = entities[ mapEntityNum ].brushes;
 563                                                 entities[ mapEntityNum ].brushes = buildBrush;
 564                                                 entities[ mapEntityNum ].numBrushes++;
 565                                         }
 566                                         else
 567                                                 free( buildBrush );
 568                                 }
 569                         }
 570                 }
 571         }
 572 }
 573
 574
 575
 576 /*
 577 AddTriangleModels()
 578 adds misc_model surfaces to the bsp
 579 */
 580
 581 void AddTriangleModels( entity_t *e )
 582 {
 583         int                             num, frame, castShadows, recvShadows, spawnFlags;
 584         entity_t                *e2;
 585         const char              *targetName;
 586         const char              *target, *model, *value;
 587         char                    shader[ MAX_QPATH ];
 588         shaderInfo_t    *celShader;
 589         float                   temp, baseLightmapScale, lightmapScale;
 590         vec3_t                  origin, scale, angles;
 591         m4x4_t                  transform;
 592         epair_t                 *ep;
 593         remap_t                 *remap, *remap2;
 594         char                    *split;
 595
 596
 597         /* note it */
 598         Sys_FPrintf( SYS_VRB, "--- AddTriangleModels ---\n" );
 599
 600         /* get current brush entity targetname */
 601         if( e == entities )
 602                 targetName = "";
 603         else
 604         {
 605                 targetName = ValueForKey( e, "targetname" );
 606
 607                 /* misc_model entities target non-worldspawn brush model entities */
 608                 if( targetName[ 0 ] == '\0' )
 609                         return;
 610         }
 611
 612         /* get lightmap scale */
 613         baseLightmapScale = FloatForKey( e, "_lightmapscale" );
 614         if( baseLightmapScale <= 0.0f )
 615                 baseLightmapScale = 0.0f;
 616
 617         /* walk the entity list */
 618         for( num = 1; num < numEntities; num++ )
 619         {
 620                 /* get e2 */
 621                 e2 = &entities[ num ];
 622
 623                 /* convert misc_models into raw geometry */
 624                 if( Q_stricmp( "misc_model", ValueForKey( e2, "classname" ) ) )
 625                         continue;
 626
 627                 /* ydnar: added support for md3 models on non-worldspawn models */
 628                 target = ValueForKey( e2, "target" );
 629                 if( strcmp( target, targetName ) )
 630                         continue;
 631
 632                 /* get model name */
 633                 model = ValueForKey( e2, "model" );
 634                 if( model[ 0 ] == '\0' )
 635                 {
 636                         Sys_Printf( "WARNING: misc_model at %i %i %i without a model key\n",
 637                                 (int) origin[ 0 ], (int) origin[ 1 ], (int) origin[ 2 ] );
 638                         continue;
 639                 }
 640
 641                 /* get model frame */
 642                 frame = IntForKey( e2, "_frame" );
 643
 644                 /* worldspawn (and func_groups) default to cast/recv shadows in worldspawn group */
 645                 if( e == entities )
 646                 {
 647                         castShadows = WORLDSPAWN_CAST_SHADOWS;
 648                         recvShadows = WORLDSPAWN_RECV_SHADOWS;
 649                 }
 650
 651                 /* other entities don't cast any shadows, but recv worldspawn shadows */
 652                 else
 653                 {
 654                         castShadows = ENTITY_CAST_SHADOWS;
 655                         recvShadows = ENTITY_RECV_SHADOWS;
 656                 }
 657
 658                 /* get explicit shadow flags */
 659                 GetEntityShadowFlags( e2, e, &castShadows, &recvShadows );
 660
 661                 /* get spawnflags */
 662                 spawnFlags = IntForKey( e2, "spawnflags" );
 663
 664                 /* get origin */
 665                 GetVectorForKey( e2, "origin", origin );
 666                 VectorSubtract( origin, e->origin, origin );    /* offset by parent */
 667
 668                 /* get scale */
 669                 scale[ 0 ] = scale[ 1 ] = scale[ 2 ] = 1.0f;
 670                 temp = FloatForKey( e2, "modelscale" );
 671                 if( temp != 0.0f )
 672                         scale[ 0 ] = scale[ 1 ] = scale[ 2 ] = temp;
 673                 value = ValueForKey( e2, "modelscale_vec" );
 674                 if( value[ 0 ] != '\0' )
 675                         sscanf( value, "%f %f %f", &scale[ 0 ], &scale[ 1 ], &scale[ 2 ] );
 676
 677                 /* get "angle" (yaw) or "angles" (pitch yaw roll) */
 678                 angles[ 0 ] = angles[ 1 ] = angles[ 2 ] = 0.0f;
 679                 angles[ 2 ] = FloatForKey( e2, "angle" );
 680                 value = ValueForKey( e2, "angles" );
 681                 if( value[ 0 ] != '\0' )
 682                         sscanf( value, "%f %f %f", &angles[ 1 ], &angles[ 2 ], &angles[ 0 ] );
 683
 684                 /* set transform matrix (thanks spog) */
 685                 m4x4_identity( transform );
 686                 m4x4_pivoted_transform_by_vec3( transform, origin, angles, eXYZ, scale, vec3_origin );
 687
 688                 /* get shader remappings */
 689                 remap = NULL;
 690                 for( ep = e2->epairs; ep != NULL; ep = ep->next )
 691                 {
 692                         /* look for keys prefixed with "_remap" */
 693                         if( ep->key != NULL && ep->value != NULL &&
 694                                 ep->key[ 0 ] != '\0' && ep->value[ 0 ] != '\0' &&
 695                                 !Q_strncasecmp( ep->key, "_remap", 6 ) )
 696                         {
 697                                 /* create new remapping */
 698                                 remap2 = remap;
 699                                 remap = safe_malloc( sizeof( *remap ) );
 700                                 remap->next = remap2;
 701                                 strcpy( remap->from, ep->value );
 702
 703                                 /* split the string */
 704                                 split = strchr( remap->from, ';' );
 705                                 if( split == NULL )
 706                                 {
 707                                         Sys_Printf( "WARNING: Shader _remap key found in misc_model without a ; character\n" );
 708                                         free( remap );
 709                                         remap = remap2;
 710                                         continue;
 711                                 }
 712
 713                                 /* store the split */
 714                                 *split = '\0';
 715                                 strcpy( remap->to, (split + 1) );
 716
 717                                 /* note it */
 718                                 //%     Sys_FPrintf( SYS_VRB, "Remapping %s to %s\n", remap->from, remap->to );
 719                         }
 720                 }
 721
 722                 /* ydnar: cel shader support */
 723                 value = ValueForKey( e2, "_celshader" );
 724                 if( value[ 0 ] == '\0' )
 725                         value = ValueForKey( &entities[ 0 ], "_celshader" );
 726                 if( value[ 0 ] != '\0' )
 727                 {
 728                         sprintf( shader, "textures/%s", value );
 729                         celShader = ShaderInfoForShader( shader );
 730                 }
 731                 else
 732                         celShader = *globalCelShader ? ShaderInfoForShader(globalCelShader) : NULL;
 733
 734                 /* get lightmap scale */
 735                 lightmapScale = FloatForKey( e2, "_lightmapscale" );
 736                 if( lightmapScale <= 0.0f )
 737                         lightmapScale = baseLightmapScale;
 738
 739                 /* insert the model */
 740                 InsertModel( (char*) model, frame, transform, remap, celShader, mapEntityNum, castShadows, recvShadows, spawnFlags, lightmapScale );
 741
 742                 /* free shader remappings */
 743                 while( remap != NULL )
 744                 {
 745                         remap2 = remap->next;
 746                         free( remap );
 747                         remap = remap2;
 748                 }
 749         }
 750 }