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 ){
51 /* handle special cases */
52 if ( shader == NULL ) {
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 ) {
63 if ( contentFlags != NULL && bspShaders[ i ].contentFlags != *contentFlags ) {
68 if ( !Q_stricmp( shader, bspShaders[ i ].shader ) ) {
76 si = ShaderInfoForShader( shader );
78 /* emit a new shader */
79 AUTOEXPAND_BY_REALLOC_BSP( Shaders, 1024 );
82 strcpy( bspShaders[ i ].shader, shader );
83 bspShaders[ i ].surfaceFlags = si->surfaceFlags;
84 bspShaders[ i ].contentFlags = si->contentFlags;
86 /* handle custom content/surface flags */
87 if ( surfaceFlags != NULL ) {
88 bspShaders[ i ].surfaceFlags = *surfaceFlags;
90 if ( contentFlags != NULL ) {
91 bspShaders[ i ].contentFlags = *contentFlags;
94 /* recursively emit any damage shaders */
95 if ( si->damageShader != NULL && si->damageShader[ 0 ] != '\0' ) {
96 Sys_FPrintf( SYS_VRB, "Shader %s has damage shader %s\n", si->shader, si->damageShader );
97 EmitShader( si->damageShader, NULL, NULL );
108 there is no oportunity to discard planes, because all of the original
109 brushes will be saved in the map
112 void EmitPlanes( void ){
118 /* walk plane list */
120 for ( i = 0; i < nummapplanes; i++, mp++ )
122 AUTOEXPAND_BY_REALLOC_BSP( Planes, 1024 );
123 bp = &bspPlanes[ numBSPPlanes ];
124 VectorCopy( mp->normal, bp->normal );
129 /* emit some statistics */
130 Sys_FPrintf( SYS_VRB, "%9d BSP planes\n", numBSPPlanes );
137 emits a leafnode to the bsp file
140 void EmitLeaf( node_t *node ){
147 if ( numBSPLeafs >= MAX_MAP_LEAFS ) {
148 Error( "MAX_MAP_LEAFS" );
151 leaf_p = &bspLeafs[numBSPLeafs];
154 leaf_p->cluster = node->cluster;
155 leaf_p->area = node->area;
157 /* emit bounding box */
158 VectorCopy( node->mins, leaf_p->mins );
159 VectorCopy( node->maxs, leaf_p->maxs );
161 /* emit leaf brushes */
162 leaf_p->firstBSPLeafBrush = numBSPLeafBrushes;
163 for ( b = node->brushlist; b; b = b->next )
165 /* something is corrupting brushes */
166 if ( (size_t) b < 256 ) {
167 Sys_Printf( "WARNING: Node brush list corrupted (0x%08X)\n", b );
170 //% if( b->guard != 0xDEADBEEF )
171 //% 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 );
173 AUTOEXPAND_BY_REALLOC_BSP( LeafBrushes, 1024 );
174 bspLeafBrushes[ numBSPLeafBrushes ] = b->original->outputNum;
178 leaf_p->numBSPLeafBrushes = numBSPLeafBrushes - leaf_p->firstBSPLeafBrush;
180 /* emit leaf surfaces */
181 if ( node->opaque ) {
185 /* add the drawSurfRef_t drawsurfs */
186 leaf_p->firstBSPLeafSurface = numBSPLeafSurfaces;
187 for ( dsr = node->drawSurfReferences; dsr; dsr = dsr->nextRef )
189 AUTOEXPAND_BY_REALLOC_BSP( LeafSurfaces, 1024 );
190 bspLeafSurfaces[ numBSPLeafSurfaces ] = dsr->outputNum;
191 numBSPLeafSurfaces++;
194 leaf_p->numBSPLeafSurfaces = numBSPLeafSurfaces - leaf_p->firstBSPLeafSurface;
200 recursively emit the bsp nodes
203 int EmitDrawNode_r( node_t *node ){
208 /* check for leafnode */
209 if ( node->planenum == PLANENUM_LEAF ) {
215 AUTOEXPAND_BY_REALLOC_BSP( Nodes, 1024 );
220 VectorCopy( node->mins, n->mins );
221 VectorCopy( node->maxs, n->maxs );
223 if ( node->planenum & 1 ) {
224 Error( "WriteDrawNodes_r: odd planenum" );
226 n->planeNum = node->planenum;
229 // recursively output the other nodes
231 for ( i = 0 ; i < 2 ; i++ )
233 if ( node->children[i]->planenum == PLANENUM_LEAF ) {
234 n->children[i] = -( numBSPLeafs + 1 );
235 EmitLeaf( node->children[i] );
239 n->children[i] = numBSPNodes;
240 EmitDrawNode_r( node->children[i] );
241 // n may have become invalid here, so...
256 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 ){
281 int i, j, style, numStyles;
286 char lightTargets[ MAX_SWITCHED_LIGHTS ][ 64 ];
287 int lightStyles[ MAX_SWITCHED_LIGHTS ];
289 /* -keeplights option: force lights to be kept and ignore what the map file says */
291 SetKeyValue( &entities[0], "_keepLights", "1" );
294 /* ydnar: determine if we keep lights in the bsp */
295 if ( KeyExists( &entities[ 0 ], "_keepLights" ) == qtrue ) {
296 t = ValueForKey( &entities[ 0 ], "_keepLights" );
297 keepLights = ( t[ 0 ] == '1' ) ? qtrue : qfalse;
300 /* any light that is controlled (has a targetname) must have a unique style number generated for it */
302 for ( i = 1; i < numEntities; i++ )
306 t = ValueForKey( e, "classname" );
307 if ( Q_strncasecmp( t, "light", 5 ) ) {
310 t = ValueForKey( e, "targetname" );
311 if ( t[ 0 ] == '\0' ) {
312 /* ydnar: strip the light from the BSP file */
313 if ( keepLights == qfalse ) {
331 /* get existing style */
332 style = IntForKey( e, "style" );
333 if ( style < LS_NORMAL || style > LS_NONE ) {
334 Error( "Invalid lightstyle (%d) on entity %d", style, i );
337 /* find this targetname */
338 for ( j = 0; j < numStyles; j++ )
339 if ( lightStyles[ j ] == style && !strcmp( lightTargets[ j ], t ) ) {
343 /* add a new style */
344 if ( j >= numStyles ) {
345 if ( numStyles == MAX_SWITCHED_LIGHTS ) {
346 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 ) {
359 sprintf( value, "%d", style );
360 SetKeyValue( e, "switch_style", value );
364 /* emit some statistics */
365 Sys_FPrintf( SYS_VRB, "%9d light entities stripped\n", numStrippedLights );
372 starts a new bsp file
375 void BeginBSPFile( void ){
376 /* these values may actually be initialized if the file existed when loaded, so clear them explicitly */
379 numBSPBrushSides = 0;
380 numBSPLeafSurfaces = 0;
381 numBSPLeafBrushes = 0;
383 /* leave leaf 0 as an error, because leafs are referenced as negative number nodes */
387 /* ydnar: gs mods: set the first 6 drawindexes to 0 1 2 2 1 3 for triangles and quads */
388 numBSPDrawIndexes = 6;
389 AUTOEXPAND_BY_REALLOC_BSP( DrawIndexes, 1024 );
390 bspDrawIndexes[ 0 ] = 0;
391 bspDrawIndexes[ 1 ] = 1;
392 bspDrawIndexes[ 2 ] = 2;
393 bspDrawIndexes[ 3 ] = 0;
394 bspDrawIndexes[ 4 ] = 2;
395 bspDrawIndexes[ 5 ] = 3;
402 finishes a new bsp and writes to disk
405 void EndBSPFile( qboolean do_write ){
409 Sys_FPrintf( SYS_VRB, "--- EndBSPFile ---\n" );
413 numBSPEntities = numEntities;
417 /* write the surface extra file */
418 WriteSurfaceExtraFile( source );
421 sprintf( path, "%s.bsp", source );
422 Sys_Printf( "Writing %s\n", path );
423 WriteBSPFile( path );
431 writes the brush list to the bsp
434 void EmitBrushes( brush_t *brushes, int *firstBrush, int *numBrushes ){
441 /* set initial brush */
442 if ( firstBrush != NULL ) {
443 *firstBrush = numBSPBrushes;
445 if ( numBrushes != NULL ) {
449 /* walk list of brushes */
450 for ( b = brushes; b != NULL; b = b->next )
453 AUTOEXPAND_BY_REALLOC_BSP( Brushes, 1024 );
456 b->outputNum = numBSPBrushes;
457 db = &bspBrushes[ numBSPBrushes ];
459 if ( numBrushes != NULL ) {
463 db->shaderNum = EmitShader( b->contentShader->shader, &b->contentShader->contentFlags, &b->contentShader->surfaceFlags );
464 db->firstSide = numBSPBrushSides;
468 for ( j = 0; j < b->numsides; j++ )
470 /* set output number to bogus initially */
471 b->sides[ j ].outputNum = -1;
474 AUTOEXPAND_BY_REALLOC_BSP( BrushSides, 1024 );
477 b->sides[ j ].outputNum = numBSPBrushSides;
478 cp = &bspBrushSides[ numBSPBrushSides ];
481 cp->planeNum = b->sides[ j ].planenum;
484 if ( b->sides[ j ].shaderInfo ) {
485 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 );
498 turns map fogs into bsp fogs
501 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 ) {
516 bspFogs[ i ].brushNum = -1;
517 bspFogs[ i ].visibleSide = -1;
522 bspFogs[ i ].brushNum = mapFogs[ i ].brush->outputNum;
524 /* try to use forced visible side */
525 if ( mapFogs[ i ].visibleSide >= 0 ) {
526 bspFogs[ i ].visibleSide = mapFogs[ i ].visibleSide;
530 /* find visible side */
531 for ( j = 0; j < 6; j++ )
533 if ( mapFogs[ i ].brush->sides[ j ].visibleHull != NULL ) {
534 Sys_Printf( "Fog %d has visible side %d\n", i, j );
535 bspFogs[ i ].visibleSide = j;
547 sets up a new brush model
550 void BeginModel( void ){
555 vec3_t lgMins, lgMaxs; /* ydnar: lightgrid mins/maxs */
561 AUTOEXPAND_BY_REALLOC_BSP( Models, 256 );
563 /* get model and entity */
564 mod = &bspModels[ numBSPModels ];
565 e = &entities[ mapEntityNum ];
567 /* ydnar: lightgrid mins/maxs */
568 ClearBounds( lgMins, lgMaxs );
570 /* bound the brushes */
571 ClearBounds( mins, maxs );
572 for ( b = e->brushes; b; b = b->next )
574 /* ignore non-real brushes (origin, etc) */
575 if ( b->numsides == 0 ) {
578 AddPointToBounds( b->mins, mins, maxs );
579 AddPointToBounds( b->maxs, mins, maxs );
581 /* ydnar: lightgrid bounds */
582 if ( b->compileFlags & C_LIGHTGRID ) {
583 AddPointToBounds( b->mins, lgMins, lgMaxs );
584 AddPointToBounds( b->maxs, lgMins, lgMaxs );
589 for ( p = e->patches; p; p = p->next )
591 for ( i = 0; i < ( p->mesh.width * p->mesh.height ); i++ )
592 AddPointToBounds( p->mesh.verts[i].xyz, mins, maxs );
595 /* ydnar: lightgrid mins/maxs */
596 if ( lgMins[ 0 ] < 99999 ) {
597 /* use lightgrid bounds */
598 VectorCopy( lgMins, mod->mins );
599 VectorCopy( lgMaxs, mod->maxs );
603 /* use brush/patch bounds */
604 VectorCopy( mins, mod->mins );
605 VectorCopy( maxs, mod->maxs );
609 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 ] );
610 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 ] );
613 mod->firstBSPSurface = numBSPDrawSurfaces;
614 mod->firstBSPBrush = numBSPBrushes;
622 finish a model's processing
625 void EndModel( entity_t *e, node_t *headnode ){
630 Sys_FPrintf( SYS_VRB, "--- EndModel ---\n" );
633 mod = &bspModels[ numBSPModels ];
634 EmitDrawNode_r( headnode );
636 /* set surfaces and brushes */
637 mod->numBSPSurfaces = numBSPDrawSurfaces - mod->firstBSPSurface;
638 mod->firstBSPBrush = e->firstBrush;
639 mod->numBSPBrushes = e->numBrushes;
641 /* increment model count */