1 /* -------------------------------------------------------------------------------
2
3 Copyright (C) 1999-2006 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 WRITEBSP_C
33
34
35
36 /* dependencies */
37 #include "q3map2.h"
38
39
40
41 /*
42 EmitShader()
43 emits a bsp shader entry
44 */
45
EmitShader(const char * shader,int * contentFlags,int * surfaceFlags)46 int EmitShader( const char *shader, int *contentFlags, int *surfaceFlags )
47 {
48 int i;
49 shaderInfo_t *si;
50
51
52 /* handle special cases */
53 if( shader == NULL )
54 shader = "noshader";
55
56 /* try to find an existing shader */
57 for( i = 0; i < numBSPShaders; i++ )
58 {
59 /* ydnar: handle custom surface/content flags */
60 if( surfaceFlags != NULL && bspShaders[ i ].surfaceFlags != *surfaceFlags )
61 continue;
62 if( contentFlags != NULL && bspShaders[ i ].contentFlags != *contentFlags )
63 continue;
64
65 /* compare name */
66 if( !Q_stricmp( shader, bspShaders[ i ].shader ) )
67 return i;
68 }
69
70 /* get shaderinfo */
71 si = ShaderInfoForShader( shader );
72
73 /* emit a new shader */
74 if( i == MAX_MAP_SHADERS )
75 Error( "MAX_MAP_SHADERS" );
76 numBSPShaders++;
77 strcpy( bspShaders[ i ].shader, shader );
78 bspShaders[ i ].surfaceFlags = si->surfaceFlags;
79 bspShaders[ i ].contentFlags = si->contentFlags;
80
81 /* handle custom content/surface flags */
82 if( surfaceFlags != NULL )
83 bspShaders[ i ].surfaceFlags = *surfaceFlags;
84 if( contentFlags != NULL )
85 bspShaders[ i ].contentFlags = *contentFlags;
86
87 /* recursively emit any damage shaders */
88 if( si->damageShader != NULL && si->damageShader[ 0 ] != '\0' )
89 {
90 Sys_FPrintf( SYS_VRB, "Shader %s has damage shader %s\n", si->shader, si->damageShader );
91 EmitShader( si->damageShader, NULL, NULL );
92 }
93
94 /* return it */
95 return i;
96 }
97
98
99
100 /*
101 EmitPlanes()
102 there is no oportunity to discard planes, because all of the original
103 brushes will be saved in the map
104 */
105
EmitPlanes(void)106 void EmitPlanes( void )
107 {
108 int i;
109 bspPlane_t *bp;
110 plane_t *mp;
111
112
113 /* walk plane list */
114 mp = mapplanes;
115 for( i = 0; i < nummapplanes; i++, mp++ )
116 {
117 bp = &bspPlanes[ numBSPPlanes ];
118 VectorCopy( mp->normal, bp->normal );
119 bp->dist = mp->dist;
120 numBSPPlanes++;
121 }
122
123 /* emit some statistics */
124 Sys_FPrintf( SYS_VRB, "%9d BSP planes\n", numBSPPlanes );
125 }
126
127
128
129 /*
130 EmitLeaf()
131 emits a leafnode to the bsp file
132 */
133
EmitLeaf(node_t * node)134 void EmitLeaf( node_t *node )
135 {
136 bspLeaf_t *leaf_p;
137 brush_t *b;
138 drawSurfRef_t *dsr;
139 int i = 0;
140
141
142 /* check limits */
143 if( numBSPLeafs >= MAX_MAP_LEAFS )
144 Error( "MAX_MAP_LEAFS" );
145
146 leaf_p = &bspLeafs[numBSPLeafs];
147 numBSPLeafs++;
148
149 leaf_p->cluster = node->cluster;
150 leaf_p->area = node->area;
151
152 /* emit bounding box */
153 VectorCopy( node->mins, leaf_p->mins );
154 VectorCopy( node->maxs, leaf_p->maxs );
155
156 /* emit leaf brushes */
157 leaf_p->firstBSPLeafBrush = numBSPLeafBrushes;
158 for( b = node->brushlist; b; b = b->next )
159 {
160 /* something is corrupting brushes */
161 if( (int) b < 256 )
162 {
163 Sys_Printf( "WARNING: Node brush list corrupted (0x%08X)\n", b );
164 break;
165 }
166 //% if( b->guard != 0xDEADBEEF )
167 //% Sys_Printf( "Brush %6d: 0x%08X Guard: 0x%08X Next: 0x%08X Original: 0x%08X Sides: %d\n", b->brushNum, b, b, b->next, b->original, b->numsides );
168
169 if( numBSPLeafBrushes >= MAX_MAP_LEAFBRUSHES )
170 Error( "MAX_MAP_LEAFBRUSHES" );
171 bspLeafBrushes[ numBSPLeafBrushes ] = b->original->outputNum;
172 numBSPLeafBrushes++;
173 }
174
175 leaf_p->numBSPLeafBrushes = numBSPLeafBrushes - leaf_p->firstBSPLeafBrush;
176
177 /* emit leaf surfaces */
178 if( node->opaque )
179 return;
180
181 /* add the drawSurfRef_t drawsurfs */
182 leaf_p->firstBSPLeafSurface = numBSPLeafSurfaces;
183 for ( dsr = node->drawSurfReferences; dsr; dsr = dsr->nextRef )
184 {
185 if( numBSPLeafSurfaces >= MAX_MAP_LEAFFACES )
186 Error( "MAX_MAP_LEAFFACES" );
187 bspLeafSurfaces[ numBSPLeafSurfaces ] = dsr->outputNum;
188 numBSPLeafSurfaces++;
189 }
190
191 leaf_p->numBSPLeafSurfaces = numBSPLeafSurfaces - leaf_p->firstBSPLeafSurface;
192 }
193
194
195 /*
196 EmitDrawNode_r()
197 recursively emit the bsp nodes
198 */
199
EmitDrawNode_r(node_t * node)200 int EmitDrawNode_r( node_t *node )
201 {
202 bspNode_t *n;
203 int i;
204
205
206 /* check for leafnode */
207 if( node->planenum == PLANENUM_LEAF )
208 {
209 EmitLeaf( node );
210 return -numBSPLeafs;
211 }
212
213 /* emit a node */
214 if( numBSPNodes == MAX_MAP_NODES )
215 Error( "MAX_MAP_NODES" );
216 n = &bspNodes[ numBSPNodes ];
217 numBSPNodes++;
218
219 VectorCopy (node->mins, n->mins);
220 VectorCopy (node->maxs, n->maxs);
221
222 if (node->planenum & 1)
223 Error ("WriteDrawNodes_r: odd planenum");
224 n->planeNum = node->planenum;
225
226 //
227 // recursively output the other nodes
228 //
229 for (i=0 ; i<2 ; i++)
230 {
231 if (node->children[i]->planenum == PLANENUM_LEAF)
232 {
233 n->children[i] = -(numBSPLeafs + 1);
234 EmitLeaf (node->children[i]);
235 }
236 else
237 {
238 n->children[i] = numBSPNodes;
239 EmitDrawNode_r (node->children[i]);
240 }
241 }
242
243 return n - bspNodes;
244 }
245
246
247
248 /*
249 ============
250 SetModelNumbers
251 ============
252 */
SetModelNumbers(void)253 void SetModelNumbers (void)
254 {
255 int i;
256 int models;
257 char value[10];
258
259 models = 1;
260 for ( i=1 ; i<numEntities ; i++ ) {
261 if ( entities[i].brushes || entities[i].patches ) {
262 sprintf ( value, "*%i", models );
263 models++;
264 SetKeyValue (&entities[i], "model", value);
265 }
266 }
267
268 }
269
270
271
272
273 /*
274 SetLightStyles()
275 sets style keys for entity lights
276 */
277
SetLightStyles(void)278 void SetLightStyles( void )
279 {
280 int i, j, style, numStyles;
281 qboolean keepLights;
282 const char *t;
283 entity_t *e;
284 epair_t *ep, *next;
285 char value[ 10 ];
286 char lightTargets[ MAX_SWITCHED_LIGHTS ][ 64 ];
287 int lightStyles[ MAX_SWITCHED_LIGHTS ];
288
289
290 /* ydnar: determine if we keep lights in the bsp */
291 t = ValueForKey( &entities[ 0 ], "_keepLights" );
292 keepLights = (t[ 0 ] == '1') ? qtrue : qfalse;
293
294 /* any light that is controlled (has a targetname) must have a unique style number generated for it */
295 numStyles = 0;
296 for( i = 1; i < numEntities; i++ )
297 {
298 e = &entities[ i ];
299
300 t = ValueForKey( e, "classname" );
301 if( Q_strncasecmp( t, "light", 5 ) )
302 continue;
303 t = ValueForKey( e, "targetname" );
304 if( t[ 0 ] == '\0' )
305 {
306 /* ydnar: strip the light from the BSP file */
307 if( keepLights == qfalse )
308 {
309 ep = e->epairs;
310 while( ep != NULL )
311 {
312 next = ep->next;
313 free( ep->key );
314 free( ep->value );
315 free( ep );
316 ep = next;
317 }
318 e->epairs = NULL;
319 numStrippedLights++;
320 }
321
322 /* next light */
323 continue;
324 }
325
326 /* get existing style */
327 style = IntForKey( e, "style" );
328 if( style < LS_NORMAL || style > LS_NONE )
329 Error( "Invalid lightstyle (%d) on entity %d", style, i );
330
331 /* find this targetname */
332 for( j = 0; j < numStyles; j++ )
333 if( lightStyles[ j ] == style && !strcmp( lightTargets[ j ], t ) )
334 break;
335
336 /* add a new style */
337 if( j >= numStyles )
338 {
339 if( numStyles == MAX_SWITCHED_LIGHTS )
340 Error( "MAX_SWITCHED_LIGHTS (%d) exceeded, reduce the number of lights with targetnames", MAX_SWITCHED_LIGHTS );
341 strcpy( lightTargets[ j ], t );
342 lightStyles[ j ] = style;
343 numStyles++;
344 }
345
346 /* set explicit style */
347 sprintf( value, "%d", 32 + j );
348 SetKeyValue( e, "style", value );
349
350 /* set old style */
351 if( style != LS_NORMAL )
352 {
353 sprintf( value, "%d", style );
354 SetKeyValue( e, "switch_style", value );
355 }
356 }
357
358 /* emit some statistics */
359 Sys_FPrintf( SYS_VRB, "%9d light entities stripped\n", numStrippedLights );
360 }
361
362
363
364 /*
365 BeginBSPFile()
366 starts a new bsp file
367 */
368
BeginBSPFile(void)369 void BeginBSPFile( void )
370 {
371 /* these values may actually be initialized if the file existed when loaded, so clear them explicitly */
372 numBSPModels = 0;
373 numBSPNodes = 0;
374 numBSPBrushSides = 0;
375 numBSPLeafSurfaces = 0;
376 numBSPLeafBrushes = 0;
377
378 /* leave leaf 0 as an error, because leafs are referenced as negative number nodes */
379 numBSPLeafs = 1;
380
381
382 /* ydnar: gs mods: set the first 6 drawindexes to 0 1 2 2 1 3 for triangles and quads */
383 numBSPDrawIndexes = 6;
384 bspDrawIndexes[ 0 ] = 0;
385 bspDrawIndexes[ 1 ] = 1;
386 bspDrawIndexes[ 2 ] = 2;
387 bspDrawIndexes[ 3 ] = 0;
388 bspDrawIndexes[ 4 ] = 2;
389 bspDrawIndexes[ 5 ] = 3;
390 }
391
392
393
394 /*
395 EndBSPFile()
396 finishes a new bsp and writes to disk
397 */
398
EndBSPFile(void)399 void EndBSPFile( void )
400 {
401 char path[ 1024 ];
402
403
404 EmitPlanes();
405
406 numBSPEntities = numEntities;
407 UnparseEntities();
408
409 /* write the surface extra file */
410 WriteSurfaceExtraFile( source );
411
412 /* write the bsp */
413 sprintf( path, "%s.bsp", source );
414 Sys_Printf( "Writing %s\n", path );
415 WriteBSPFile( path );
416 }
417
418
419
420 /*
421 EmitBrushes()
422 writes the brush list to the bsp
423 */
424
EmitBrushes(brush_t * brushes,int * firstBrush,int * numBrushes)425 void EmitBrushes( brush_t *brushes, int *firstBrush, int *numBrushes )
426 {
427 int j;
428 brush_t *b;
429 bspBrush_t *db;
430 bspBrushSide_t *cp;
431
432
433 /* set initial brush */
434 if( firstBrush != NULL )
435 *firstBrush = numBSPBrushes;
436 if( numBrushes != NULL )
437 *numBrushes = 0;
438
439 /* walk list of brushes */
440 for( b = brushes; b != NULL; b = b->next )
441 {
442 /* check limits */
443 if( numBSPBrushes == MAX_MAP_BRUSHES )
444 Error( "MAX_MAP_BRUSHES (%d)", numBSPBrushes );
445
446 /* get bsp brush */
447 b->outputNum = numBSPBrushes;
448 db = &bspBrushes[ numBSPBrushes ];
449 numBSPBrushes++;
450 if( numBrushes != NULL )
451 (*numBrushes)++;
452
453 db->shaderNum = EmitShader( b->contentShader->shader, &b->contentShader->contentFlags, &b->contentShader->surfaceFlags );
454 db->firstSide = numBSPBrushSides;
455
456 /* walk sides */
457 db->numSides = 0;
458 for( j = 0; j < b->numsides; j++ )
459 {
460 /* set output number to bogus initially */
461 b->sides[ j ].outputNum = -1;
462
463 /* check count */
464 if( numBSPBrushSides == MAX_MAP_BRUSHSIDES )
465 Error( "MAX_MAP_BRUSHSIDES ");
466
467 /* emit side */
468 b->sides[ j ].outputNum = numBSPBrushSides;
469 cp = &bspBrushSides[ numBSPBrushSides ];
470 db->numSides++;
471 numBSPBrushSides++;
472 cp->planeNum = b->sides[ j ].planenum;
473
474 /* emit shader */
475 if( b->sides[ j ].shaderInfo )
476 cp->shaderNum = EmitShader( b->sides[ j ].shaderInfo->shader, &b->sides[ j ].shaderInfo->contentFlags, &b->sides[ j ].shaderInfo->surfaceFlags );
477 else
478 cp->shaderNum = EmitShader( NULL, NULL, NULL );
479 }
480 }
481 }
482
483
484
485 /*
486 EmitFogs() - ydnar
487 turns map fogs into bsp fogs
488 */
489
EmitFogs(void)490 void EmitFogs( void )
491 {
492 int i, j;
493
494
495 /* setup */
496 numBSPFogs = numMapFogs;
497
498 /* walk list */
499 for( i = 0; i < numMapFogs; i++ )
500 {
501 /* set shader */
502 strcpy( bspFogs[ i ].shader, mapFogs[ i ].si->shader );
503
504 /* global fog doesn't have an associated brush */
505 if( mapFogs[ i ].brush == NULL )
506 {
507 bspFogs[ i ].brushNum = -1;
508 bspFogs[ i ].visibleSide = -1;
509 }
510 else
511 {
512 /* set brush */
513 bspFogs[ i ].brushNum = mapFogs[ i ].brush->outputNum;
514
515 /* try to use forced visible side */
516 if( mapFogs[ i ].visibleSide >= 0 )
517 {
518 bspFogs[ i ].visibleSide = mapFogs[ i ].visibleSide;
519 continue;
520 }
521
522 /* find visible side */
523 for( j = 0; j < 6; j++ )
524 {
525 if( mapFogs[ i ].brush->sides[ j ].visibleHull != NULL )
526 {
527 Sys_Printf( "Fog %d has visible side %d\n", i, j );
528 bspFogs[ i ].visibleSide = j;
529 break;
530 }
531 }
532 }
533 }
534 }
535
536
537
538 /*
539 BeginModel()
540 sets up a new brush model
541 */
542
BeginModel(void)543 void BeginModel( void )
544 {
545 bspModel_t *mod;
546 brush_t *b;
547 entity_t *e;
548 vec3_t mins, maxs;
549 vec3_t lgMins, lgMaxs; /* ydnar: lightgrid mins/maxs */
550 parseMesh_t *p;
551 int i;
552
553
554 /* test limits */
555 if( numBSPModels == MAX_MAP_MODELS )
556 Error( "MAX_MAP_MODELS" );
557
558 /* get model and entity */
559 mod = &bspModels[ numBSPModels ];
560 e = &entities[ mapEntityNum ];
561
562 /* ydnar: lightgrid mins/maxs */
563 ClearBounds( lgMins, lgMaxs );
564
565 /* bound the brushes */
566 ClearBounds( mins, maxs );
567 for ( b = e->brushes; b; b = b->next )
568 {
569 /* ignore non-real brushes (origin, etc) */
570 if( b->numsides == 0 )
571 continue;
572 AddPointToBounds( b->mins, mins, maxs );
573 AddPointToBounds( b->maxs, mins, maxs );
574
575 /* ydnar: lightgrid bounds */
576 if( b->compileFlags & C_LIGHTGRID )
577 {
578 AddPointToBounds( b->mins, lgMins, lgMaxs );
579 AddPointToBounds( b->maxs, lgMins, lgMaxs );
580 }
581 }
582
583 /* bound patches */
584 for( p = e->patches; p; p = p->next )
585 {
586 for( i = 0; i < (p->mesh.width * p->mesh.height); i++ )
587 AddPointToBounds( p->mesh.verts[i].xyz, mins, maxs );
588 }
589
590 /* ydnar: lightgrid mins/maxs */
591 if( lgMins[ 0 ] < 99999 )
592 {
593 /* use lightgrid bounds */
594 VectorCopy( lgMins, mod->mins );
595 VectorCopy( lgMaxs, mod->maxs );
596 }
597 else
598 {
599 /* use brush/patch bounds */
600 VectorCopy( mins, mod->mins );
601 VectorCopy( maxs, mod->maxs );
602 }
603
604 /* note size */
605 Sys_FPrintf( SYS_VRB, "BSP bounds: { %f %f %f } { %f %f %f }\n", mins[ 0 ], mins[ 1 ], mins[ 2 ], maxs[ 0 ], maxs[ 1 ], maxs[ 2 ] );
606 Sys_FPrintf( SYS_VRB, "Lightgrid bounds: { %f %f %f } { %f %f %f }\n", lgMins[ 0 ], lgMins[ 1 ], lgMins[ 2 ], lgMaxs[ 0 ], lgMaxs[ 1 ], lgMaxs[ 2 ] );
607
608 /* set firsts */
609 mod->firstBSPSurface = numBSPDrawSurfaces;
610 mod->firstBSPBrush = numBSPBrushes;
611 }
612
613
614
615
616 /*
617 EndModel()
618 finish a model's processing
619 */
620
EndModel(entity_t * e,node_t * headnode)621 void EndModel( entity_t *e, node_t *headnode )
622 {
623 bspModel_t *mod;
624
625
626 /* note it */
627 Sys_FPrintf( SYS_VRB, "--- EndModel ---\n" );
628
629 /* emit the bsp */
630 mod = &bspModels[ numBSPModels ];
631 EmitDrawNode_r( headnode );
632
633 /* set surfaces and brushes */
634 mod->numBSPSurfaces = numBSPDrawSurfaces - mod->firstBSPSurface;
635 mod->firstBSPBrush = e->firstBrush;
636 mod->numBSPBrushes = e->numBrushes;
637
638 /* increment model count */
639 numBSPModels++;
640 }
641
642
643
644