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 bp = &bspPlanes[ numBSPPlanes ];
120 VectorCopy( mp->normal, bp->normal );
125 /* emit some statistics */
126 Sys_FPrintf( SYS_VRB, "%9d BSP planes\n", numBSPPlanes );
133 emits a leafnode to the bsp file
136 void EmitLeaf( node_t *node )
144 if( numBSPLeafs >= MAX_MAP_LEAFS )
145 Error( "MAX_MAP_LEAFS" );
147 leaf_p = &bspLeafs[numBSPLeafs];
150 leaf_p->cluster = node->cluster;
151 leaf_p->area = node->area;
153 /* emit bounding box */
154 VectorCopy( node->mins, leaf_p->mins );
155 VectorCopy( node->maxs, leaf_p->maxs );
157 /* emit leaf brushes */
158 leaf_p->firstBSPLeafBrush = numBSPLeafBrushes;
159 for( b = node->brushlist; b; b = b->next )
161 /* something is corrupting brushes */
162 if( (size_t) b < 256 )
164 Sys_Printf( "WARNING: Node brush list corrupted (0x%08X)\n", b );
167 //% if( b->guard != 0xDEADBEEF )
168 //% 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 );
170 AUTOEXPAND_BY_REALLOC_BSP(LeafBrushes, 1024);
171 bspLeafBrushes[ numBSPLeafBrushes ] = b->original->outputNum;
175 leaf_p->numBSPLeafBrushes = numBSPLeafBrushes - leaf_p->firstBSPLeafBrush;
177 /* emit leaf surfaces */
181 /* add the drawSurfRef_t drawsurfs */
182 leaf_p->firstBSPLeafSurface = numBSPLeafSurfaces;
183 for ( dsr = node->drawSurfReferences; dsr; dsr = dsr->nextRef )
185 AUTOEXPAND_BY_REALLOC_BSP(LeafSurfaces, 1024);
186 bspLeafSurfaces[ numBSPLeafSurfaces ] = dsr->outputNum;
187 numBSPLeafSurfaces++;
190 leaf_p->numBSPLeafSurfaces = numBSPLeafSurfaces - leaf_p->firstBSPLeafSurface;
196 recursively emit the bsp nodes
199 int EmitDrawNode_r( node_t *node )
205 /* check for leafnode */
206 if( node->planenum == PLANENUM_LEAF )
213 AUTOEXPAND_BY_REALLOC_BSP(Nodes, 1024);
218 VectorCopy (node->mins, n->mins);
219 VectorCopy (node->maxs, n->maxs);
221 if (node->planenum & 1)
222 Error ("WriteDrawNodes_r: odd planenum");
223 n->planeNum = node->planenum;
226 // recursively output the other nodes
228 for (i=0 ; i<2 ; i++)
230 if (node->children[i]->planenum == PLANENUM_LEAF)
232 n->children[i] = -(numBSPLeafs + 1);
233 EmitLeaf (node->children[i]);
237 n->children[i] = numBSPNodes;
238 EmitDrawNode_r (node->children[i]);
239 // n may have become invalid here, so...
254 void SetModelNumbers (void)
261 for ( i=1 ; i<numEntities ; i++ ) {
262 if ( entities[i].brushes || entities[i].patches ) {
263 sprintf ( value, "*%i", models );
265 SetKeyValue (&entities[i], "model", value);
276 sets style keys for entity lights
279 void SetLightStyles( void )
281 int i, j, style, numStyles;
287 char lightTargets[ MAX_SWITCHED_LIGHTS ][ 64 ];
288 int lightStyles[ MAX_SWITCHED_LIGHTS ];
291 /* ydnar: determine if we keep lights in the bsp */
292 t = ValueForKey( &entities[ 0 ], "_keepLights" );
293 keepLights = (t[ 0 ] == '1') ? qtrue : qfalse;
295 /* any light that is controlled (has a targetname) must have a unique style number generated for it */
297 for( i = 1; i < numEntities; i++ )
301 t = ValueForKey( e, "classname" );
302 if( Q_strncasecmp( t, "light", 5 ) )
304 t = ValueForKey( e, "targetname" );
307 /* ydnar: strip the light from the BSP file */
308 if( keepLights == qfalse )
327 /* get existing style */
328 style = IntForKey( e, "style" );
329 if( style < LS_NORMAL || style > LS_NONE )
330 Error( "Invalid lightstyle (%d) on entity %d", style, i );
332 /* find this targetname */
333 for( j = 0; j < numStyles; j++ )
334 if( lightStyles[ j ] == style && !strcmp( lightTargets[ j ], t ) )
337 /* add a new style */
340 if( numStyles == MAX_SWITCHED_LIGHTS )
341 Error( "MAX_SWITCHED_LIGHTS (%d) exceeded, reduce the number of lights with targetnames", MAX_SWITCHED_LIGHTS );
342 strcpy( lightTargets[ j ], t );
343 lightStyles[ j ] = style;
347 /* set explicit style */
348 sprintf( value, "%d", 32 + j );
349 SetKeyValue( e, "style", value );
352 if( style != LS_NORMAL )
354 sprintf( value, "%d", style );
355 SetKeyValue( e, "switch_style", value );
359 /* emit some statistics */
360 Sys_FPrintf( SYS_VRB, "%9d light entities stripped\n", numStrippedLights );
367 starts a new bsp file
370 void BeginBSPFile( void )
372 /* these values may actually be initialized if the file existed when loaded, so clear them explicitly */
375 numBSPBrushSides = 0;
376 numBSPLeafSurfaces = 0;
377 numBSPLeafBrushes = 0;
379 /* leave leaf 0 as an error, because leafs are referenced as negative number nodes */
383 /* ydnar: gs mods: set the first 6 drawindexes to 0 1 2 2 1 3 for triangles and quads */
384 numBSPDrawIndexes = 6;
385 bspDrawIndexes[ 0 ] = 0;
386 bspDrawIndexes[ 1 ] = 1;
387 bspDrawIndexes[ 2 ] = 2;
388 bspDrawIndexes[ 3 ] = 0;
389 bspDrawIndexes[ 4 ] = 2;
390 bspDrawIndexes[ 5 ] = 3;
397 finishes a new bsp and writes to disk
400 void EndBSPFile( void )
405 Sys_FPrintf( SYS_VRB, "--- EndBSPFile ---\n" );
409 numBSPEntities = numEntities;
412 /* write the surface extra file */
413 WriteSurfaceExtraFile( source );
416 sprintf( path, "%s.bsp", source );
417 Sys_Printf( "Writing %s\n", path );
418 WriteBSPFile( path );
425 writes the brush list to the bsp
428 void EmitBrushes( brush_t *brushes, int *firstBrush, int *numBrushes )
436 /* set initial brush */
437 if( firstBrush != NULL )
438 *firstBrush = numBSPBrushes;
439 if( numBrushes != NULL )
442 /* walk list of brushes */
443 for( b = brushes; b != NULL; b = b->next )
446 AUTOEXPAND_BY_REALLOC_BSP(Brushes, 1024);
449 b->outputNum = numBSPBrushes;
450 db = &bspBrushes[ numBSPBrushes ];
452 if( numBrushes != NULL )
455 db->shaderNum = EmitShader( b->contentShader->shader, &b->contentShader->contentFlags, &b->contentShader->surfaceFlags );
456 db->firstSide = numBSPBrushSides;
460 for( j = 0; j < b->numsides; j++ )
462 /* set output number to bogus initially */
463 b->sides[ j ].outputNum = -1;
466 AUTOEXPAND_BY_REALLOC_BSP(BrushSides, 1024);
469 b->sides[ j ].outputNum = numBSPBrushSides;
470 cp = &bspBrushSides[ numBSPBrushSides ];
473 cp->planeNum = b->sides[ j ].planenum;
476 if( b->sides[ j ].shaderInfo )
477 cp->shaderNum = EmitShader( b->sides[ j ].shaderInfo->shader, &b->sides[ j ].shaderInfo->contentFlags, &b->sides[ j ].shaderInfo->surfaceFlags );
479 cp->shaderNum = EmitShader( NULL, NULL, NULL );
488 turns map fogs into bsp fogs
491 void EmitFogs( void )
497 numBSPFogs = numMapFogs;
500 for( i = 0; i < numMapFogs; i++ )
503 strcpy( bspFogs[ i ].shader, mapFogs[ i ].si->shader );
505 /* global fog doesn't have an associated brush */
506 if( mapFogs[ i ].brush == NULL )
508 bspFogs[ i ].brushNum = -1;
509 bspFogs[ i ].visibleSide = -1;
514 bspFogs[ i ].brushNum = mapFogs[ i ].brush->outputNum;
516 /* try to use forced visible side */
517 if( mapFogs[ i ].visibleSide >= 0 )
519 bspFogs[ i ].visibleSide = mapFogs[ i ].visibleSide;
523 /* find visible side */
524 for( j = 0; j < 6; j++ )
526 if( mapFogs[ i ].brush->sides[ j ].visibleHull != NULL )
528 Sys_Printf( "Fog %d has visible side %d\n", i, j );
529 bspFogs[ i ].visibleSide = j;
541 sets up a new brush model
544 void BeginModel( void )
550 vec3_t lgMins, lgMaxs; /* ydnar: lightgrid mins/maxs */
556 AUTOEXPAND_BY_REALLOC_BSP(Models, 256);
558 /* get model and entity */
559 mod = &bspModels[ numBSPModels ];
560 e = &entities[ mapEntityNum ];
562 /* ydnar: lightgrid mins/maxs */
563 ClearBounds( lgMins, lgMaxs );
565 /* bound the brushes */
566 ClearBounds( mins, maxs );
567 for ( b = e->brushes; b; b = b->next )
569 /* ignore non-real brushes (origin, etc) */
570 if( b->numsides == 0 )
572 AddPointToBounds( b->mins, mins, maxs );
573 AddPointToBounds( b->maxs, mins, maxs );
575 /* ydnar: lightgrid bounds */
576 if( b->compileFlags & C_LIGHTGRID )
578 AddPointToBounds( b->mins, lgMins, lgMaxs );
579 AddPointToBounds( b->maxs, lgMins, lgMaxs );
584 for( p = e->patches; p; p = p->next )
586 for( i = 0; i < (p->mesh.width * p->mesh.height); i++ )
587 AddPointToBounds( p->mesh.verts[i].xyz, mins, maxs );
590 /* ydnar: lightgrid mins/maxs */
591 if( lgMins[ 0 ] < 99999 )
593 /* use lightgrid bounds */
594 VectorCopy( lgMins, mod->mins );
595 VectorCopy( lgMaxs, mod->maxs );
599 /* use brush/patch bounds */
600 VectorCopy( mins, mod->mins );
601 VectorCopy( maxs, mod->maxs );
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 ] );
609 mod->firstBSPSurface = numBSPDrawSurfaces;
610 mod->firstBSPBrush = numBSPBrushes;
618 finish a model's processing
621 void EndModel( entity_t *e, node_t *headnode )
627 Sys_FPrintf( SYS_VRB, "--- EndModel ---\n" );
630 mod = &bspModels[ numBSPModels ];
631 EmitDrawNode_r( headnode );
633 /* set surfaces and brushes */
634 mod->numBSPSurfaces = numBSPDrawSurfaces - mod->firstBSPSurface;
635 mod->firstBSPBrush = e->firstBrush;
636 mod->numBSPBrushes = e->numBrushes;
638 /* increment model count */