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 ) {
67 si = ShaderInfoForShader( shader );
68 if ( si->remapShader && si->remapShader[ 0 ] ) {
69 shader = si->remapShader;
73 if ( !Q_stricmp( shader, bspShaders[ i ].shader ) ) {
81 si = ShaderInfoForShader( shader );
83 /* emit a new shader */
84 AUTOEXPAND_BY_REALLOC_BSP( Shaders, 1024 );
87 strcpy( bspShaders[ i ].shader, shader );
88 bspShaders[ i ].surfaceFlags = si->surfaceFlags;
89 bspShaders[ i ].contentFlags = si->contentFlags;
91 /* handle custom content/surface flags */
92 if ( surfaceFlags != NULL ) {
93 bspShaders[ i ].surfaceFlags = *surfaceFlags;
95 if ( contentFlags != NULL ) {
96 bspShaders[ i ].contentFlags = *contentFlags;
99 /* recursively emit any damage shaders */
100 if ( si->damageShader != NULL && si->damageShader[ 0 ] != '\0' ) {
101 Sys_FPrintf( SYS_VRB, "Shader %s has damage shader %s\n", si->shader, si->damageShader );
102 EmitShader( si->damageShader, NULL, NULL );
113 there is no oportunity to discard planes, because all of the original
114 brushes will be saved in the map
117 void EmitPlanes( void ){
123 /* walk plane list */
125 for ( i = 0; i < nummapplanes; i++, mp++ )
127 AUTOEXPAND_BY_REALLOC_BSP( Planes, 1024 );
128 bp = &bspPlanes[ numBSPPlanes ];
129 VectorCopy( mp->normal, bp->normal );
134 /* emit some statistics */
135 Sys_FPrintf( SYS_VRB, "%9d BSP planes\n", numBSPPlanes );
142 emits a leafnode to the bsp file
145 void EmitLeaf( node_t *node ){
152 if ( numBSPLeafs >= MAX_MAP_LEAFS ) {
153 Error( "MAX_MAP_LEAFS" );
156 leaf_p = &bspLeafs[numBSPLeafs];
159 leaf_p->cluster = node->cluster;
160 leaf_p->area = node->area;
162 /* emit bounding box */
163 VectorCopy( node->mins, leaf_p->mins );
164 VectorCopy( node->maxs, leaf_p->maxs );
166 /* emit leaf brushes */
167 leaf_p->firstBSPLeafBrush = numBSPLeafBrushes;
168 for ( b = node->brushlist; b; b = b->next )
170 /* something is corrupting brushes */
171 if ( (size_t) b < 256 ) {
172 Sys_Printf( "WARNING: Node brush list corrupted (0x%08X)\n", b );
175 //% if( b->guard != 0xDEADBEEF )
176 //% 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 );
178 AUTOEXPAND_BY_REALLOC_BSP( LeafBrushes, 1024 );
179 bspLeafBrushes[ numBSPLeafBrushes ] = b->original->outputNum;
183 leaf_p->numBSPLeafBrushes = numBSPLeafBrushes - leaf_p->firstBSPLeafBrush;
185 /* emit leaf surfaces */
186 if ( node->opaque ) {
190 /* add the drawSurfRef_t drawsurfs */
191 leaf_p->firstBSPLeafSurface = numBSPLeafSurfaces;
192 for ( dsr = node->drawSurfReferences; dsr; dsr = dsr->nextRef )
194 AUTOEXPAND_BY_REALLOC_BSP( LeafSurfaces, 1024 );
195 bspLeafSurfaces[ numBSPLeafSurfaces ] = dsr->outputNum;
196 numBSPLeafSurfaces++;
199 leaf_p->numBSPLeafSurfaces = numBSPLeafSurfaces - leaf_p->firstBSPLeafSurface;
205 recursively emit the bsp nodes
208 int EmitDrawNode_r( node_t *node ){
213 /* check for leafnode */
214 if ( node->planenum == PLANENUM_LEAF ) {
220 AUTOEXPAND_BY_REALLOC_BSP( Nodes, 1024 );
225 VectorCopy( node->mins, n->mins );
226 VectorCopy( node->maxs, n->maxs );
228 if ( node->planenum & 1 ) {
229 Error( "WriteDrawNodes_r: odd planenum" );
231 n->planeNum = node->planenum;
234 // recursively output the other nodes
236 for ( i = 0 ; i < 2 ; i++ )
238 if ( node->children[i]->planenum == PLANENUM_LEAF ) {
239 n->children[i] = -( numBSPLeafs + 1 );
240 EmitLeaf( node->children[i] );
244 n->children[i] = numBSPNodes;
245 EmitDrawNode_r( node->children[i] );
246 // n may have become invalid here, so...
261 void SetModelNumbers( void ){
267 for ( i = 1 ; i < numEntities ; i++ ) {
268 if ( entities[i].brushes || entities[i].patches ) {
269 sprintf( value, "*%i", models );
271 SetKeyValue( &entities[i], "model", value );
282 sets style keys for entity lights
285 void SetLightStyles( void ){
286 int i, j, style, numStyles;
291 char lightTargets[ MAX_SWITCHED_LIGHTS ][ 64 ];
292 int lightStyles[ MAX_SWITCHED_LIGHTS ];
294 /* -keeplights option: force lights to be kept and ignore what the map file says */
296 SetKeyValue( &entities[0], "_keepLights", "1" );
299 /* ydnar: determine if we keep lights in the bsp */
300 if ( KeyExists( &entities[ 0 ], "_keepLights" ) == qtrue ) {
301 t = ValueForKey( &entities[ 0 ], "_keepLights" );
302 keepLights = ( t[ 0 ] == '1' ) ? qtrue : qfalse;
305 /* any light that is controlled (has a targetname) must have a unique style number generated for it */
307 for ( i = 1; i < numEntities; i++ )
311 t = ValueForKey( e, "classname" );
312 if ( Q_strncasecmp( t, "light", 5 ) ) {
315 t = ValueForKey( e, "targetname" );
316 if ( t[ 0 ] == '\0' ) {
317 /* ydnar: strip the light from the BSP file */
318 if ( keepLights == qfalse ) {
336 /* get existing style */
337 style = IntForKey( e, "style" );
338 if ( style < LS_NORMAL || style > LS_NONE ) {
339 Error( "Invalid lightstyle (%d) on entity %d", style, i );
342 /* find this targetname */
343 for ( j = 0; j < numStyles; j++ )
344 if ( lightStyles[ j ] == style && !strcmp( lightTargets[ j ], t ) ) {
348 /* add a new style */
349 if ( j >= numStyles ) {
350 if ( numStyles == MAX_SWITCHED_LIGHTS ) {
351 Error( "MAX_SWITCHED_LIGHTS (%d) exceeded, reduce the number of lights with targetnames", MAX_SWITCHED_LIGHTS );
353 strcpy( lightTargets[ j ], t );
354 lightStyles[ j ] = style;
358 /* set explicit style */
359 sprintf( value, "%d", 32 + j );
360 SetKeyValue( e, "style", value );
363 if ( style != LS_NORMAL ) {
364 sprintf( value, "%d", style );
365 SetKeyValue( e, "switch_style", value );
369 /* emit some statistics */
370 Sys_FPrintf( SYS_VRB, "%9d light entities stripped\n", numStrippedLights );
377 starts a new bsp file
380 void BeginBSPFile( void ){
381 /* these values may actually be initialized if the file existed when loaded, so clear them explicitly */
384 numBSPBrushSides = 0;
385 numBSPLeafSurfaces = 0;
386 numBSPLeafBrushes = 0;
388 /* leave leaf 0 as an error, because leafs are referenced as negative number nodes */
392 /* ydnar: gs mods: set the first 6 drawindexes to 0 1 2 2 1 3 for triangles and quads */
393 numBSPDrawIndexes = 6;
394 AUTOEXPAND_BY_REALLOC_BSP( DrawIndexes, 1024 );
395 bspDrawIndexes[ 0 ] = 0;
396 bspDrawIndexes[ 1 ] = 1;
397 bspDrawIndexes[ 2 ] = 2;
398 bspDrawIndexes[ 3 ] = 0;
399 bspDrawIndexes[ 4 ] = 2;
400 bspDrawIndexes[ 5 ] = 3;
407 finishes a new bsp and writes to disk
410 void EndBSPFile( qboolean do_write ){
414 Sys_FPrintf( SYS_VRB, "--- EndBSPFile ---\n" );
418 numBSPEntities = numEntities;
422 /* write the surface extra file */
423 WriteSurfaceExtraFile( source );
426 sprintf( path, "%s.bsp", source );
427 Sys_Printf( "Writing %s\n", path );
428 WriteBSPFile( path );
436 writes the brush list to the bsp
439 void EmitBrushes( brush_t *brushes, int *firstBrush, int *numBrushes ){
446 /* set initial brush */
447 if ( firstBrush != NULL ) {
448 *firstBrush = numBSPBrushes;
450 if ( numBrushes != NULL ) {
454 /* walk list of brushes */
455 for ( b = brushes; b != NULL; b = b->next )
458 AUTOEXPAND_BY_REALLOC_BSP( Brushes, 1024 );
461 b->outputNum = numBSPBrushes;
462 db = &bspBrushes[ numBSPBrushes ];
464 if ( numBrushes != NULL ) {
468 db->shaderNum = EmitShader( b->contentShader->shader, &b->contentShader->contentFlags, &b->contentShader->surfaceFlags );
469 db->firstSide = numBSPBrushSides;
473 for ( j = 0; j < b->numsides; j++ )
475 /* set output number to bogus initially */
476 b->sides[ j ].outputNum = -1;
479 AUTOEXPAND_BY_REALLOC_BSP( BrushSides, 1024 );
482 b->sides[ j ].outputNum = numBSPBrushSides;
483 cp = &bspBrushSides[ numBSPBrushSides ];
486 cp->planeNum = b->sides[ j ].planenum;
489 if ( b->sides[ j ].shaderInfo ) {
490 cp->shaderNum = EmitShader( b->sides[ j ].shaderInfo->shader, &b->sides[ j ].shaderInfo->contentFlags, &b->sides[ j ].shaderInfo->surfaceFlags );
493 cp->shaderNum = EmitShader( NULL, NULL, NULL );
503 turns map fogs into bsp fogs
506 void EmitFogs( void ){
511 numBSPFogs = numMapFogs;
514 for ( i = 0; i < numMapFogs; i++ )
517 strcpy( bspFogs[ i ].shader, mapFogs[ i ].si->shader );
519 /* global fog doesn't have an associated brush */
520 if ( mapFogs[ i ].brush == NULL ) {
521 bspFogs[ i ].brushNum = -1;
522 bspFogs[ i ].visibleSide = -1;
527 bspFogs[ i ].brushNum = mapFogs[ i ].brush->outputNum;
529 /* try to use forced visible side */
530 if ( mapFogs[ i ].visibleSide >= 0 ) {
531 bspFogs[ i ].visibleSide = mapFogs[ i ].visibleSide;
535 /* find visible side */
536 for ( j = 0; j < 6; j++ )
538 if ( mapFogs[ i ].brush->sides[ j ].visibleHull != NULL ) {
539 Sys_Printf( "Fog %d has visible side %d\n", i, j );
540 bspFogs[ i ].visibleSide = j;
552 sets up a new brush model
555 void BeginModel( void ){
560 vec3_t lgMins, lgMaxs; /* ydnar: lightgrid mins/maxs */
566 AUTOEXPAND_BY_REALLOC_BSP( Models, 256 );
568 /* get model and entity */
569 mod = &bspModels[ numBSPModels ];
570 e = &entities[ mapEntityNum ];
572 /* ydnar: lightgrid mins/maxs */
573 ClearBounds( lgMins, lgMaxs );
575 /* bound the brushes */
576 ClearBounds( mins, maxs );
577 for ( b = e->brushes; b; b = b->next )
579 /* ignore non-real brushes (origin, etc) */
580 if ( b->numsides == 0 ) {
583 AddPointToBounds( b->mins, mins, maxs );
584 AddPointToBounds( b->maxs, mins, maxs );
586 /* ydnar: lightgrid bounds */
587 if ( b->compileFlags & C_LIGHTGRID ) {
588 AddPointToBounds( b->mins, lgMins, lgMaxs );
589 AddPointToBounds( b->maxs, lgMins, lgMaxs );
594 for ( p = e->patches; p; p = p->next )
596 for ( i = 0; i < ( p->mesh.width * p->mesh.height ); i++ )
597 AddPointToBounds( p->mesh.verts[i].xyz, mins, maxs );
600 /* ydnar: lightgrid mins/maxs */
601 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 ){
635 Sys_FPrintf( SYS_VRB, "--- EndModel ---\n" );
638 mod = &bspModels[ numBSPModels ];
639 EmitDrawNode_r( headnode );
641 /* set surfaces and brushes */
642 mod->numBSPSurfaces = numBSPDrawSurfaces - mod->firstBSPSurface;
643 mod->firstBSPBrush = e->firstBrush;
644 mod->numBSPBrushes = e->numBrushes;
646 /* increment model count */