1 /* -------------------------------------------------------------------------------
3 Copyright (C) 1999-2007 id Software, Inc. and contributors.
4 For a list of contributors, see the accompanying CONTRIBUTORS file.
6 This file is part of GtkRadiant.
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.
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.
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
22 ----------------------------------------------------------------------------------
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."
27 ------------------------------------------------------------------------------- */
43 emits a bsp shader entry
46 int EmitShader( const char *shader, int *contentFlags, int *surfaceFlags )
52 /* handle special cases */
56 /* try to find an existing shader */
57 for( i = 0; i < numBSPShaders; i++ )
59 /* ydnar: handle custom surface/content flags */
60 if( surfaceFlags != NULL && bspShaders[ i ].surfaceFlags != *surfaceFlags )
62 if( contentFlags != NULL && bspShaders[ i ].contentFlags != *contentFlags )
66 if( !Q_stricmp( shader, bspShaders[ i ].shader ) )
73 si = ShaderInfoForShader( shader );
75 /* emit a new shader */
76 AUTOEXPAND_BY_REALLOC_BSP(Shaders, 1024);
79 strcpy( bspShaders[ i ].shader, shader );
80 bspShaders[ i ].surfaceFlags = si->surfaceFlags;
81 bspShaders[ i ].contentFlags = si->contentFlags;
83 /* handle custom content/surface flags */
84 if( surfaceFlags != NULL )
85 bspShaders[ i ].surfaceFlags = *surfaceFlags;
86 if( contentFlags != NULL )
87 bspShaders[ i ].contentFlags = *contentFlags;
89 /* recursively emit any damage shaders */
90 if( si->damageShader != NULL && si->damageShader[ 0 ] != '\0' )
92 Sys_FPrintf( SYS_VRB, "Shader %s has damage shader %s\n", si->shader, si->damageShader );
93 EmitShader( si->damageShader, NULL, NULL );
104 there is no oportunity to discard planes, because all of the original
105 brushes will be saved in the map
108 void EmitPlanes( void )
115 /* walk plane list */
117 for( i = 0; i < nummapplanes; i++, mp++ )
119 AUTOEXPAND_BY_REALLOC_BSP(Planes, 1024);
120 bp = &bspPlanes[ numBSPPlanes ];
121 VectorCopy( mp->normal, bp->normal );
126 /* emit some statistics */
127 Sys_FPrintf( SYS_VRB, "%9d BSP planes\n", numBSPPlanes );
134 emits a leafnode to the bsp file
137 void EmitLeaf( node_t *node )
145 if( numBSPLeafs >= MAX_MAP_LEAFS )
146 Error( "MAX_MAP_LEAFS" );
148 leaf_p = &bspLeafs[numBSPLeafs];
151 leaf_p->cluster = node->cluster;
152 leaf_p->area = node->area;
154 /* emit bounding box */
155 VectorCopy( node->mins, leaf_p->mins );
156 VectorCopy( node->maxs, leaf_p->maxs );
158 /* emit leaf brushes */
159 leaf_p->firstBSPLeafBrush = numBSPLeafBrushes;
160 for( b = node->brushlist; b; b = b->next )
162 /* something is corrupting brushes */
163 if( (size_t) b < 256 )
165 Sys_Printf( "WARNING: Node brush list corrupted (0x%08X)\n", b );
168 //% if( b->guard != 0xDEADBEEF )
169 //% 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 );
171 AUTOEXPAND_BY_REALLOC_BSP(LeafBrushes, 1024);
172 bspLeafBrushes[ numBSPLeafBrushes ] = b->original->outputNum;
176 leaf_p->numBSPLeafBrushes = numBSPLeafBrushes - leaf_p->firstBSPLeafBrush;
178 /* emit leaf surfaces */
182 /* add the drawSurfRef_t drawsurfs */
183 leaf_p->firstBSPLeafSurface = numBSPLeafSurfaces;
184 for ( dsr = node->drawSurfReferences; dsr; dsr = dsr->nextRef )
186 AUTOEXPAND_BY_REALLOC_BSP(LeafSurfaces, 1024);
187 bspLeafSurfaces[ numBSPLeafSurfaces ] = dsr->outputNum;
188 numBSPLeafSurfaces++;
191 leaf_p->numBSPLeafSurfaces = numBSPLeafSurfaces - leaf_p->firstBSPLeafSurface;
197 recursively emit the bsp nodes
200 int EmitDrawNode_r( node_t *node )
206 /* check for leafnode */
207 if( node->planenum == PLANENUM_LEAF )
214 AUTOEXPAND_BY_REALLOC_BSP(Nodes, 1024);
219 VectorCopy (node->mins, n->mins);
220 VectorCopy (node->maxs, n->maxs);
222 if (node->planenum & 1)
223 Error ("WriteDrawNodes_r: odd planenum");
224 n->planeNum = node->planenum;
227 // recursively output the other nodes
229 for (i=0 ; i<2 ; i++)
231 if (node->children[i]->planenum == PLANENUM_LEAF)
233 n->children[i] = -(numBSPLeafs + 1);
234 EmitLeaf (node->children[i]);
238 n->children[i] = numBSPNodes;
239 EmitDrawNode_r (node->children[i]);
240 // n may have become invalid here, so...
255 void SetModelNumbers (void)
262 for ( i=1 ; i<numEntities ; i++ ) {
263 if ( entities[i].brushes || entities[i].patches ) {
264 sprintf ( value, "*%i", models );
266 SetKeyValue (&entities[i], "model", value);
277 sets style keys for entity lights
280 void SetLightStyles( void )
282 int i, j, style, numStyles;
287 char lightTargets[ MAX_SWITCHED_LIGHTS ][ 64 ];
288 int lightStyles[ MAX_SWITCHED_LIGHTS ];
290 /* -keeplights option: force lights to be kept and ignore what the map file says */
292 SetKeyValue(&entities[0], "_keepLights", "1");
294 /* ydnar: determine if we keep lights in the bsp */
295 if (KeyExists(&entities[ 0 ], "_keepLights") == qtrue)
297 t = ValueForKey( &entities[ 0 ], "_keepLights" );
298 keepLights = (t[ 0 ] == '1') ? qtrue : qfalse;
301 /* any light that is controlled (has a targetname) must have a unique style number generated for it */
303 for( i = 1; i < numEntities; i++ )
307 t = ValueForKey( e, "classname" );
308 if( Q_strncasecmp( t, "light", 5 ) )
310 t = ValueForKey( e, "targetname" );
313 /* ydnar: strip the light from the BSP file */
314 if( keepLights == qfalse )
333 /* get existing style */
334 style = IntForKey( e, "style" );
335 if( style < LS_NORMAL || style > LS_NONE )
336 Error( "Invalid lightstyle (%d) on entity %d", style, i );
338 /* find this targetname */
339 for( j = 0; j < numStyles; j++ )
340 if( lightStyles[ j ] == style && !strcmp( lightTargets[ j ], t ) )
343 /* add a new style */
346 if( numStyles == MAX_SWITCHED_LIGHTS )
347 Error( "MAX_SWITCHED_LIGHTS (%d) exceeded, reduce the number of lights with targetnames", MAX_SWITCHED_LIGHTS );
348 strcpy( lightTargets[ j ], t );
349 lightStyles[ j ] = style;
353 /* set explicit style */
354 sprintf( value, "%d", 32 + j );
355 SetKeyValue( e, "style", value );
358 if( style != LS_NORMAL )
360 sprintf( value, "%d", style );
361 SetKeyValue( e, "switch_style", value );
365 /* emit some statistics */
366 Sys_FPrintf( SYS_VRB, "%9d light entities stripped\n", numStrippedLights );
373 starts a new bsp file
376 void BeginBSPFile( void )
378 /* these values may actually be initialized if the file existed when loaded, so clear them explicitly */
381 numBSPBrushSides = 0;
382 numBSPLeafSurfaces = 0;
383 numBSPLeafBrushes = 0;
385 /* leave leaf 0 as an error, because leafs are referenced as negative number nodes */
389 /* ydnar: gs mods: set the first 6 drawindexes to 0 1 2 2 1 3 for triangles and quads */
390 numBSPDrawIndexes = 6;
391 bspDrawIndexes[ 0 ] = 0;
392 bspDrawIndexes[ 1 ] = 1;
393 bspDrawIndexes[ 2 ] = 2;
394 bspDrawIndexes[ 3 ] = 0;
395 bspDrawIndexes[ 4 ] = 2;
396 bspDrawIndexes[ 5 ] = 3;
403 finishes a new bsp and writes to disk
406 void EndBSPFile(qboolean do_write)
411 Sys_FPrintf( SYS_VRB, "--- EndBSPFile ---\n" );
415 numBSPEntities = numEntities;
420 /* write the surface extra file */
421 WriteSurfaceExtraFile( source );
424 sprintf( path, "%s.bsp", source );
425 Sys_Printf( "Writing %s\n", path );
426 WriteBSPFile( path );
434 writes the brush list to the bsp
437 void EmitBrushes( brush_t *brushes, int *firstBrush, int *numBrushes )
445 /* set initial brush */
446 if( firstBrush != NULL )
447 *firstBrush = numBSPBrushes;
448 if( numBrushes != NULL )
451 /* walk list of brushes */
452 for( b = brushes; b != NULL; b = b->next )
455 AUTOEXPAND_BY_REALLOC_BSP(Brushes, 1024);
458 b->outputNum = numBSPBrushes;
459 db = &bspBrushes[ numBSPBrushes ];
461 if( numBrushes != NULL )
464 db->shaderNum = EmitShader( b->contentShader->shader, &b->contentShader->contentFlags, &b->contentShader->surfaceFlags );
465 db->firstSide = numBSPBrushSides;
469 for( j = 0; j < b->numsides; j++ )
471 /* set output number to bogus initially */
472 b->sides[ j ].outputNum = -1;
475 AUTOEXPAND_BY_REALLOC_BSP(BrushSides, 1024);
478 b->sides[ j ].outputNum = numBSPBrushSides;
479 cp = &bspBrushSides[ numBSPBrushSides ];
482 cp->planeNum = b->sides[ j ].planenum;
485 if( b->sides[ j ].shaderInfo )
486 cp->shaderNum = EmitShader( b->sides[ j ].shaderInfo->shader, &b->sides[ j ].shaderInfo->contentFlags, &b->sides[ j ].shaderInfo->surfaceFlags );
488 cp->shaderNum = EmitShader( NULL, NULL, NULL );
497 turns map fogs into bsp fogs
500 void EmitFogs( void )
506 numBSPFogs = numMapFogs;
509 for( i = 0; i < numMapFogs; i++ )
512 strcpy( bspFogs[ i ].shader, mapFogs[ i ].si->shader );
514 /* global fog doesn't have an associated brush */
515 if( mapFogs[ i ].brush == NULL )
517 bspFogs[ i ].brushNum = -1;
518 bspFogs[ i ].visibleSide = -1;
523 bspFogs[ i ].brushNum = mapFogs[ i ].brush->outputNum;
525 /* try to use forced visible side */
526 if( mapFogs[ i ].visibleSide >= 0 )
528 bspFogs[ i ].visibleSide = mapFogs[ i ].visibleSide;
532 /* find visible side */
533 for( j = 0; j < 6; j++ )
535 if( mapFogs[ i ].brush->sides[ j ].visibleHull != NULL )
537 Sys_Printf( "Fog %d has visible side %d\n", i, j );
538 bspFogs[ i ].visibleSide = j;
550 sets up a new brush model
553 void BeginModel( void )
559 vec3_t lgMins, lgMaxs; /* ydnar: lightgrid mins/maxs */
565 AUTOEXPAND_BY_REALLOC_BSP(Models, 256);
567 /* get model and entity */
568 mod = &bspModels[ numBSPModels ];
569 e = &entities[ mapEntityNum ];
571 /* ydnar: lightgrid mins/maxs */
572 ClearBounds( lgMins, lgMaxs );
574 /* bound the brushes */
575 ClearBounds( mins, maxs );
576 for ( b = e->brushes; b; b = b->next )
578 /* ignore non-real brushes (origin, etc) */
579 if( b->numsides == 0 )
581 AddPointToBounds( b->mins, mins, maxs );
582 AddPointToBounds( b->maxs, mins, maxs );
584 /* ydnar: lightgrid bounds */
585 if( b->compileFlags & C_LIGHTGRID )
587 AddPointToBounds( b->mins, lgMins, lgMaxs );
588 AddPointToBounds( b->maxs, lgMins, lgMaxs );
593 for( p = e->patches; p; p = p->next )
595 for( i = 0; i < (p->mesh.width * p->mesh.height); i++ )
596 AddPointToBounds( p->mesh.verts[i].xyz, mins, maxs );
599 /* ydnar: lightgrid mins/maxs */
600 if( lgMins[ 0 ] < 99999 )
602 /* use lightgrid bounds */
603 VectorCopy( lgMins, mod->mins );
604 VectorCopy( lgMaxs, mod->maxs );
608 /* use brush/patch bounds */
609 VectorCopy( mins, mod->mins );
610 VectorCopy( maxs, mod->maxs );
614 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 ] );
615 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 ] );
618 mod->firstBSPSurface = numBSPDrawSurfaces;
619 mod->firstBSPBrush = numBSPBrushes;
627 finish a model's processing
630 void EndModel( entity_t *e, node_t *headnode )
636 Sys_FPrintf( SYS_VRB, "--- EndModel ---\n" );
639 mod = &bspModels[ numBSPModels ];
640 EmitDrawNode_r( headnode );
642 /* set surfaces and brushes */
643 mod->numBSPSurfaces = numBSPDrawSurfaces - mod->firstBSPSurface;
644 mod->firstBSPBrush = e->firstBrush;
645 mod->numBSPBrushes = e->numBrushes;
647 /* increment model count */