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 ) ) {
74 si = ShaderInfoForShader( shader );
76 /* emit a new shader */
77 AUTOEXPAND_BY_REALLOC_BSP( Shaders, 1024 );
80 strcpy( bspShaders[ i ].shader, shader );
81 bspShaders[ i ].surfaceFlags = si->surfaceFlags;
82 bspShaders[ i ].contentFlags = si->contentFlags;
84 /* handle custom content/surface flags */
85 if ( surfaceFlags != NULL ) {
86 bspShaders[ i ].surfaceFlags = *surfaceFlags;
88 if ( contentFlags != NULL ) {
89 bspShaders[ i ].contentFlags = *contentFlags;
92 /* recursively emit any damage shaders */
93 if ( si->damageShader != NULL && si->damageShader[ 0 ] != '\0' ) {
94 Sys_FPrintf( SYS_VRB, "Shader %s has damage shader %s\n", si->shader, si->damageShader );
95 EmitShader( si->damageShader, NULL, NULL );
106 there is no oportunity to discard planes, because all of the original
107 brushes will be saved in the map
110 void EmitPlanes( void ){
116 /* walk plane list */
118 for ( i = 0; i < nummapplanes; i++, mp++ )
120 AUTOEXPAND_BY_REALLOC_BSP( Planes, 1024 );
121 bp = &bspPlanes[ numBSPPlanes ];
122 VectorCopy( mp->normal, bp->normal );
127 /* emit some statistics */
128 Sys_FPrintf( SYS_VRB, "%9d BSP planes\n", numBSPPlanes );
135 emits a leafnode to the bsp file
138 void EmitLeaf( node_t *node ){
145 if ( numBSPLeafs >= MAX_MAP_LEAFS ) {
146 Error( "MAX_MAP_LEAFS" );
149 leaf_p = &bspLeafs[numBSPLeafs];
152 leaf_p->cluster = node->cluster;
153 leaf_p->area = node->area;
155 /* emit bounding box */
156 VectorCopy( node->mins, leaf_p->mins );
157 VectorCopy( node->maxs, leaf_p->maxs );
159 /* emit leaf brushes */
160 leaf_p->firstBSPLeafBrush = numBSPLeafBrushes;
161 for ( b = node->brushlist; b; b = b->next )
163 /* something is corrupting brushes */
164 if ( (size_t) b < 256 ) {
165 Sys_FPrintf( SYS_WRN, "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 */
179 if ( node->opaque ) {
183 /* add the drawSurfRef_t drawsurfs */
184 leaf_p->firstBSPLeafSurface = numBSPLeafSurfaces;
185 for ( dsr = node->drawSurfReferences; dsr; dsr = dsr->nextRef )
187 AUTOEXPAND_BY_REALLOC_BSP( LeafSurfaces, 1024 );
188 bspLeafSurfaces[ numBSPLeafSurfaces ] = dsr->outputNum;
189 numBSPLeafSurfaces++;
192 leaf_p->numBSPLeafSurfaces = numBSPLeafSurfaces - leaf_p->firstBSPLeafSurface;
198 recursively emit the bsp nodes
201 int EmitDrawNode_r( node_t *node ){
206 /* check for leafnode */
207 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" );
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 ) {
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 ){
260 for ( i = 1 ; i < numEntities ; i++ ) {
261 if ( entities[i].brushes || entities[i].patches ) {
262 sprintf( value, "*%i", models );
264 SetKeyValue( &entities[i], "model", value );
275 sets style keys for entity lights
278 void SetLightStyles( void ){
279 int i, j, style, numStyles;
284 char lightTargets[ MAX_SWITCHED_LIGHTS ][ 64 ];
285 int lightStyles[ MAX_SWITCHED_LIGHTS ];
287 /* -keeplights option: force lights to be kept and ignore what the map file says */
289 SetKeyValue( &entities[0], "_keepLights", "1" );
292 /* ydnar: determine if we keep lights in the bsp */
293 if ( KeyExists( &entities[ 0 ], "_keepLights" ) == qtrue ) {
294 t = ValueForKey( &entities[ 0 ], "_keepLights" );
295 keepLights = ( t[ 0 ] == '1' ) ? qtrue : qfalse;
298 /* any light that is controlled (has a targetname) must have a unique style number generated for it */
300 for ( i = 1; i < numEntities; i++ )
304 t = ValueForKey( e, "classname" );
305 if ( Q_strncasecmp( t, "light", 5 ) ) {
308 t = ValueForKey( e, "targetname" );
309 if ( t[ 0 ] == '\0' ) {
310 /* ydnar: strip the light from the BSP file */
311 if ( keepLights == qfalse ) {
329 /* get existing style */
330 style = IntForKey( e, "style" );
331 if ( style < LS_NORMAL || style > LS_NONE ) {
332 Error( "Invalid lightstyle (%d) on entity %d", style, i );
335 /* find this targetname */
336 for ( j = 0; j < numStyles; j++ )
337 if ( lightStyles[ j ] == style && !strcmp( lightTargets[ j ], t ) ) {
341 /* add a new style */
342 if ( j >= numStyles ) {
343 if ( numStyles == MAX_SWITCHED_LIGHTS ) {
344 Error( "MAX_SWITCHED_LIGHTS (%d) exceeded, reduce the number of lights with targetnames", MAX_SWITCHED_LIGHTS );
346 strcpy( lightTargets[ j ], t );
347 lightStyles[ j ] = style;
351 /* set explicit style */
352 sprintf( value, "%d", 32 + j );
353 SetKeyValue( e, "style", value );
356 if ( style != LS_NORMAL ) {
357 sprintf( value, "%d", style );
358 SetKeyValue( e, "switch_style", value );
362 /* emit some statistics */
363 Sys_FPrintf( SYS_VRB, "%9d light entities stripped\n", numStrippedLights );
370 starts a new bsp file
373 void BeginBSPFile( void ){
374 /* these values may actually be initialized if the file existed when loaded, so clear them explicitly */
377 numBSPBrushSides = 0;
378 numBSPLeafSurfaces = 0;
379 numBSPLeafBrushes = 0;
381 /* leave leaf 0 as an error, because leafs are referenced as negative number nodes */
385 /* ydnar: gs mods: set the first 6 drawindexes to 0 1 2 2 1 3 for triangles and quads */
386 numBSPDrawIndexes = 6;
387 AUTOEXPAND_BY_REALLOC_BSP( DrawIndexes, 1024 );
388 bspDrawIndexes[ 0 ] = 0;
389 bspDrawIndexes[ 1 ] = 1;
390 bspDrawIndexes[ 2 ] = 2;
391 bspDrawIndexes[ 3 ] = 0;
392 bspDrawIndexes[ 4 ] = 2;
393 bspDrawIndexes[ 5 ] = 3;
400 finishes a new bsp and writes to disk
403 void EndBSPFile( qboolean do_write, const char *BSPFilePath, const char *surfaceFilePath ){
405 Sys_FPrintf( SYS_VRB, "--- EndBSPFile ---\n" );
409 numBSPEntities = numEntities;
413 /* write the surface extra file */
414 WriteSurfaceExtraFile( surfaceFilePath );
417 Sys_Printf( "Writing %s\n", BSPFilePath );
418 WriteBSPFile( BSPFilePath );
426 writes the brush list to the bsp
429 void EmitBrushes( brush_t *brushes, int *firstBrush, int *numBrushes ){
436 /* set initial brush */
437 if ( firstBrush != NULL ) {
438 *firstBrush = numBSPBrushes;
440 if ( numBrushes != NULL ) {
444 /* walk list of brushes */
445 for ( b = brushes; b != NULL; b = b->next )
448 AUTOEXPAND_BY_REALLOC_BSP( Brushes, 1024 );
451 b->outputNum = numBSPBrushes;
452 db = &bspBrushes[ numBSPBrushes ];
454 if ( numBrushes != NULL ) {
458 db->shaderNum = EmitShader( b->contentShader->shader, &b->contentShader->contentFlags, &b->contentShader->surfaceFlags );
459 db->firstSide = numBSPBrushSides;
463 for ( j = 0; j < b->numsides; j++ )
465 /* set output number to bogus initially */
466 b->sides[ j ].outputNum = -1;
469 AUTOEXPAND_BY_REALLOC_BSP( BrushSides, 1024 );
472 b->sides[ j ].outputNum = numBSPBrushSides;
473 cp = &bspBrushSides[ numBSPBrushSides ];
476 cp->planeNum = b->sides[ j ].planenum;
479 if ( b->sides[ j ].shaderInfo ) {
480 cp->shaderNum = EmitShader( b->sides[ j ].shaderInfo->shader, &b->sides[ j ].shaderInfo->contentFlags, &b->sides[ j ].shaderInfo->surfaceFlags );
483 cp->shaderNum = EmitShader( NULL, NULL, NULL );
493 turns map fogs into bsp fogs
496 void EmitFogs( void ){
501 numBSPFogs = numMapFogs;
504 for ( i = 0; i < numMapFogs; i++ )
507 strcpy( bspFogs[ i ].shader, mapFogs[ i ].si->shader );
509 /* global fog doesn't have an associated brush */
510 if ( mapFogs[ i ].brush == NULL ) {
511 bspFogs[ i ].brushNum = -1;
512 bspFogs[ i ].visibleSide = -1;
517 bspFogs[ i ].brushNum = mapFogs[ i ].brush->outputNum;
519 /* try to use forced visible side */
520 if ( mapFogs[ i ].visibleSide >= 0 ) {
521 bspFogs[ i ].visibleSide = mapFogs[ i ].visibleSide;
525 /* find visible side */
526 for ( j = 0; j < 6; j++ )
528 if ( mapFogs[ i ].brush->sides[ j ].visibleHull != NULL ) {
529 Sys_Printf( "Fog %d has visible side %d\n", i, j );
530 bspFogs[ i ].visibleSide = j;
542 sets up a new brush model
545 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 ) {
573 AddPointToBounds( b->mins, mins, maxs );
574 AddPointToBounds( b->maxs, mins, maxs );
576 /* ydnar: lightgrid bounds */
577 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 ) {
592 /* use lightgrid bounds */
593 VectorCopy( lgMins, mod->mins );
594 VectorCopy( lgMaxs, mod->maxs );
598 /* use brush/patch bounds */
599 VectorCopy( mins, mod->mins );
600 VectorCopy( maxs, mod->maxs );
604 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 ] );
605 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 ] );
608 mod->firstBSPSurface = numBSPDrawSurfaces;
609 mod->firstBSPBrush = numBSPBrushes;
617 finish a model's processing
620 void EndModel( entity_t *e, node_t *headnode ){
625 Sys_FPrintf( SYS_VRB, "--- EndModel ---\n" );
628 mod = &bspModels[ numBSPModels ];
629 EmitDrawNode_r( headnode );
631 /* set surfaces and brushes */
632 mod->numBSPSurfaces = numBSPDrawSurfaces - mod->firstBSPSurface;
633 mod->firstBSPBrush = e->firstBrush;
634 mod->numBSPBrushes = e->numBrushes;
636 /* increment model count */