initial
[divverent/netradiant.git] / 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                         /* overflow check */
413                         if( (nummapplanes + 64) >= (MAX_MAP_PLANES >> 1) )
414                                 continue;
415                         
416                         /* walk triangle list */
417                         for( i = 0; i < ds->numIndexes; i += 3 )
418                         {
419                                 /* overflow hack */
420                                 if( (nummapplanes + 64) >= (MAX_MAP_PLANES >> 1) )
421                                 {
422                                         Sys_Printf( "WARNING: MAX_MAP_PLANES (%d) hit generating clip brushes for model %s.\n",
423                                                 MAX_MAP_PLANES, name );
424                                         break;
425                                 }
426                                 
427                                 /* make points and back points */
428                                 for( j = 0; j < 3; j++ )
429                                 {
430                                         /* get vertex */
431                                         dv = &ds->verts[ ds->indexes[ i + j ] ];
432                                         
433                                         /* copy xyz */
434                                         VectorCopy( dv->xyz, points[ j ] );
435                                         VectorCopy( dv->xyz, backs[ j ] );
436                                         
437                                         /* find nearest axial to normal and push back points opposite */
438                                         /* note: this doesn't work as well as simply using the plane of the triangle, below */
439                                         for( k = 0; k < 3; k++ )
440                                         {
441                                                 if( fabs( dv->normal[ k ] ) >= fabs( dv->normal[ (k + 1) % 3 ] ) &&
442                                                         fabs( dv->normal[ k ] ) >= fabs( dv->normal[ (k + 2) % 3 ] ) )
443                                                 {
444                                                         backs[ j ][ k ] += dv->normal[ k ] < 0.0f ? 64.0f : -64.0f;
445                                                         break;
446                                                 }
447                                         }
448                                 }
449
450                                 VectorCopy( points[0], points[3] ); // for cyclic usage
451                                 
452                                 /* make plane for triangle */
453                                 // div0: add some extra spawnflags:
454                                 //   0: snap normals to axial planes for extrusion
455                                 //   8: extrude with the original normals
456                                 //  16: extrude only with up/down normals (ideal for terrain)
457                                 //  24: extrude by distance zero (may need engine changes)
458                                 if( PlaneFromPoints( plane, points[ 0 ], points[ 1 ], points[ 2 ] ) )
459                                 {
460                                         vec3_t bestNormal;
461                                         float backPlaneDistance = 2;
462
463                                         if(spawnFlags & 8) // use a DOWN normal
464                                         {
465                                                 if(spawnFlags & 16)
466                                                 {
467                                                         // 24: normal as is, and zero width (broken)
468                                                         VectorCopy(plane, bestNormal);
469                                                 }
470                                                 else
471                                                 {
472                                                         // 8: normal as is
473                                                         VectorCopy(plane, bestNormal);
474                                                 }
475                                         }
476                                         else
477                                         {
478                                                 if(spawnFlags & 16)
479                                                 {
480                                                         // 16: UP/DOWN normal
481                                                         VectorSet(bestNormal, 0, 0, (plane[2] >= 0 ? 1 : -1));
482                                                 }
483                                                 else
484                                                 {
485                                                         // 0: axial normal
486                                                         if(fabs(plane[0]) > fabs(plane[1])) // x>y
487                                                                 if(fabs(plane[1]) > fabs(plane[2])) // x>y, y>z
488                                                                         VectorSet(bestNormal, (plane[0] >= 0 ? 1 : -1), 0, 0);
489                                                                 else // x>y, z>=y
490                                                                         if(fabs(plane[0]) > fabs(plane[2])) // x>z, z>=y
491                                                                                 VectorSet(bestNormal, (plane[0] >= 0 ? 1 : -1), 0, 0);
492                                                                         else // z>=x, x>y
493                                                                                 VectorSet(bestNormal, 0, 0, (plane[2] >= 0 ? 1 : -1));
494                                                         else // y>=x
495                                                                 if(fabs(plane[1]) > fabs(plane[2])) // y>z, y>=x
496                                                                         VectorSet(bestNormal, 0, (plane[1] >= 0 ? 1 : -1), 0);
497                                                                 else // z>=y, y>=x
498                                                                         VectorSet(bestNormal, 0, 0, (plane[2] >= 0 ? 1 : -1));
499                                                 }
500                                         }
501
502                                         /* build a brush */
503                                         buildBrush = AllocBrush( 48 );
504                                         buildBrush->entityNum = mapEntityNum;
505                                         buildBrush->original = buildBrush;
506                                         buildBrush->contentShader = si;
507                                         buildBrush->compileFlags = si->compileFlags;
508                                         buildBrush->contentFlags = si->contentFlags;
509                                         normalEpsilon_save = normalEpsilon;
510                                         distanceEpsilon_save = distanceEpsilon;
511                                         if(si->compileFlags & C_STRUCTURAL) // allow forced structural brushes here
512                                         {
513                                                 buildBrush->detail = qfalse;
514
515                                                 // only allow EXACT matches when snapping for these (this is mostly for caulk brushes inside a model)
516                                                 if(normalEpsilon > 0)
517                                                         normalEpsilon = 0;
518                                                 if(distanceEpsilon > 0)
519                                                         distanceEpsilon = 0;
520                                         }
521                                         else
522                                                 buildBrush->detail = qtrue;
523
524                                         /* regenerate back points */
525                                         for( j = 0; j < 3; j++ )
526                                         {
527                                                 /* get vertex */
528                                                 dv = &ds->verts[ ds->indexes[ i + j ] ];
529
530                                                 // shift by some units
531                                                 VectorMA(dv->xyz, -64.0f, bestNormal, backs[j]); // 64 prevents roundoff errors a bit
532                                         }
533
534                                         /* make back plane */
535                                         VectorScale( plane, -1.0f, reverse );
536                                         reverse[ 3 ] = -plane[ 3 ];
537                                         if((spawnFlags & 24) != 24)
538                                                 reverse[3] += DotProduct(bestNormal, plane) * backPlaneDistance;
539                                         // 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)
540
541                                         if( PlaneFromPoints( pa, points[ 2 ], points[ 1 ], backs[ 1 ] ) &&
542                                                         PlaneFromPoints( pb, points[ 1 ], points[ 0 ], backs[ 0 ] ) &&
543                                                         PlaneFromPoints( pc, points[ 0 ], points[ 2 ], backs[ 2 ] ) )
544                                         {
545                                                 /* set up brush sides */
546                                                 buildBrush->numsides = 5;
547                                                 for( j = 0; j < buildBrush->numsides; j++ )
548                                                         buildBrush->sides[ j ].shaderInfo = si;
549
550                                                 buildBrush->sides[ 0 ].planenum = FindFloatPlane( plane, plane[ 3 ], 3, points );
551                                                 buildBrush->sides[ 1 ].planenum = FindFloatPlane( pa, pa[ 3 ], 2, &points[ 1 ] ); // pa contains points[1] and points[2]
552                                                 buildBrush->sides[ 2 ].planenum = FindFloatPlane( pb, pb[ 3 ], 2, &points[ 0 ] ); // pb contains points[0] and points[1]
553                                                 buildBrush->sides[ 3 ].planenum = FindFloatPlane( pc, pc[ 3 ], 2, &points[ 2 ] ); // pc contains points[2] and points[0] (copied to points[3]
554                                                 buildBrush->sides[ 4 ].planenum = FindFloatPlane( reverse, reverse[ 3 ], 3, backs );
555                                         }
556                                         else
557                                         {
558                                                 free(buildBrush);
559                                                 continue;
560                                         }
561
562                                         normalEpsilon = normalEpsilon_save;
563                                         distanceEpsilon = distanceEpsilon_save;
564
565                                         /* add to entity */
566                                         if( CreateBrushWindings( buildBrush ) )
567                                         {
568                                                 AddBrushBevels();
569                                                 //%     EmitBrushes( buildBrush, NULL, NULL );
570                                                 buildBrush->next = entities[ mapEntityNum ].brushes;
571                                                 entities[ mapEntityNum ].brushes = buildBrush;
572                                                 entities[ mapEntityNum ].numBrushes++;
573                                         }
574                                         else
575                                                 free( buildBrush );
576                                 }
577                         }
578                 }
579         }
580 }
581
582
583
584 /*
585 AddTriangleModels()
586 adds misc_model surfaces to the bsp
587 */
588
589 void AddTriangleModels( entity_t *e )
590 {
591         int                             num, frame, castShadows, recvShadows, spawnFlags;
592         entity_t                *e2;
593         const char              *targetName;
594         const char              *target, *model, *value;
595         char                    shader[ MAX_QPATH ];
596         shaderInfo_t    *celShader;
597         float                   temp, baseLightmapScale, lightmapScale;
598         vec3_t                  origin, scale, angles;
599         m4x4_t                  transform;
600         epair_t                 *ep;
601         remap_t                 *remap, *remap2;
602         char                    *split;
603         
604         
605         /* note it */
606         Sys_FPrintf( SYS_VRB, "--- AddTriangleModels ---\n" );
607         
608         /* get current brush entity targetname */
609         if( e == entities )
610                 targetName = "";
611         else
612         {
613                 targetName = ValueForKey( e, "targetname" );
614         
615                 /* misc_model entities target non-worldspawn brush model entities */
616                 if( targetName[ 0 ] == '\0' )
617                         return;
618         }
619         
620         /* get lightmap scale */
621         baseLightmapScale = FloatForKey( e, "_lightmapscale" );
622         if( baseLightmapScale <= 0.0f )
623                 baseLightmapScale = 0.0f;
624         
625         /* walk the entity list */
626         for( num = 1; num < numEntities; num++ )
627         {
628                 /* get e2 */
629                 e2 = &entities[ num ];
630                 
631                 /* convert misc_models into raw geometry */
632                 if( Q_stricmp( "misc_model", ValueForKey( e2, "classname" ) ) )
633                         continue;
634
635                 /* ydnar: added support for md3 models on non-worldspawn models */
636                 target = ValueForKey( e2, "target" );
637                 if( strcmp( target, targetName ) )
638                         continue;
639                 
640                 /* get model name */
641                 model = ValueForKey( e2, "model" );
642                 if( model[ 0 ] == '\0' )
643                 {
644                         Sys_Printf( "WARNING: misc_model at %i %i %i without a model key\n",
645                                 (int) origin[ 0 ], (int) origin[ 1 ], (int) origin[ 2 ] );
646                         continue;
647                 }
648                 
649                 /* get model frame */
650                 frame = IntForKey( e2, "_frame" );
651                 
652                 /* worldspawn (and func_groups) default to cast/recv shadows in worldspawn group */
653                 if( e == entities )
654                 {
655                         castShadows = WORLDSPAWN_CAST_SHADOWS;
656                         recvShadows = WORLDSPAWN_RECV_SHADOWS;
657                 }
658                 
659                 /* other entities don't cast any shadows, but recv worldspawn shadows */
660                 else
661                 {
662                         castShadows = ENTITY_CAST_SHADOWS;
663                         recvShadows = ENTITY_RECV_SHADOWS;
664                 }
665                 
666                 /* get explicit shadow flags */
667                 GetEntityShadowFlags( e2, e, &castShadows, &recvShadows );
668                 
669                 /* get spawnflags */
670                 spawnFlags = IntForKey( e2, "spawnflags" );
671                 
672                 /* get origin */
673                 GetVectorForKey( e2, "origin", origin );
674                 VectorSubtract( origin, e->origin, origin );    /* offset by parent */
675                 
676                 /* get scale */
677                 scale[ 0 ] = scale[ 1 ] = scale[ 2 ] = 1.0f;
678                 temp = FloatForKey( e2, "modelscale" );
679                 if( temp != 0.0f )
680                         scale[ 0 ] = scale[ 1 ] = scale[ 2 ] = temp;
681                 value = ValueForKey( e2, "modelscale_vec" );
682                 if( value[ 0 ] != '\0' )
683                         sscanf( value, "%f %f %f", &scale[ 0 ], &scale[ 1 ], &scale[ 2 ] );
684                 
685                 /* get "angle" (yaw) or "angles" (pitch yaw roll) */
686                 angles[ 0 ] = angles[ 1 ] = angles[ 2 ] = 0.0f;
687                 angles[ 2 ] = FloatForKey( e2, "angle" );
688                 value = ValueForKey( e2, "angles" );
689                 if( value[ 0 ] != '\0' )
690                         sscanf( value, "%f %f %f", &angles[ 1 ], &angles[ 2 ], &angles[ 0 ] );
691                 
692                 /* set transform matrix (thanks spog) */
693                 m4x4_identity( transform );
694                 m4x4_pivoted_transform_by_vec3( transform, origin, angles, eXYZ, scale, vec3_origin );
695                 
696                 /* get shader remappings */
697                 remap = NULL;
698                 for( ep = e2->epairs; ep != NULL; ep = ep->next )
699                 {
700                         /* look for keys prefixed with "_remap" */
701                         if( ep->key != NULL && ep->value != NULL &&
702                                 ep->key[ 0 ] != '\0' && ep->value[ 0 ] != '\0' &&
703                                 !Q_strncasecmp( ep->key, "_remap", 6 ) )
704                         {
705                                 /* create new remapping */
706                                 remap2 = remap;
707                                 remap = safe_malloc( sizeof( *remap ) );
708                                 remap->next = remap2;
709                                 strcpy( remap->from, ep->value );
710                                 
711                                 /* split the string */
712                                 split = strchr( remap->from, ';' );
713                                 if( split == NULL )
714                                 {
715                                         Sys_Printf( "WARNING: Shader _remap key found in misc_model without a ; character\n" );
716                                         free( remap );
717                                         remap = remap2;
718                                         continue;
719                                 }
720                                 
721                                 /* store the split */
722                                 *split = '\0';
723                                 strcpy( remap->to, (split + 1) );
724                                 
725                                 /* note it */
726                                 //%     Sys_FPrintf( SYS_VRB, "Remapping %s to %s\n", remap->from, remap->to );
727                         }
728                 }
729                 
730                 /* ydnar: cel shader support */
731                 value = ValueForKey( e2, "_celshader" );
732                 if( value[ 0 ] == '\0' )
733                         value = ValueForKey( &entities[ 0 ], "_celshader" );
734                 if( value[ 0 ] != '\0' )
735                 {
736                         sprintf( shader, "textures/%s", value );
737                         celShader = ShaderInfoForShader( shader );
738                 }
739                 else
740                         celShader = NULL;
741                 
742                 /* get lightmap scale */
743                 lightmapScale = FloatForKey( e2, "_lightmapscale" );
744                 if( lightmapScale <= 0.0f )
745                         lightmapScale = baseLightmapScale;
746                 
747                 /* insert the model */
748                 InsertModel( (char*) model, frame, transform, remap, celShader, mapEntityNum, castShadows, recvShadows, spawnFlags, lightmapScale );
749                 
750                 /* free shader remappings */
751                 while( remap != NULL )
752                 {
753                         remap2 = remap->next;
754                         free( remap );
755                         remap = remap2;
756                 }
757         }
758 }