113 lines
2.9 KiB
C++
113 lines
2.9 KiB
C++
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/***
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*
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* Copyright (c) 1996-2002, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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****/
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// textures.c
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#include "qrad.h"
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typedef struct wadlist_s
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{
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char wadnames[MAX_TEXFILES][32];
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int count;
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} wadlist_t;
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bool g_wadtextures = DEFAULT_WADTEXTURES; // completely ignore textures in the bsp-file if enabled
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static miptex_t *g_textures[MAX_MAP_TEXTURES];
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static wadlist_t wadlist;
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void TEX_LoadTextures( void )
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{
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char wadstring[MAX_VALUE];
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char *pszWadString;
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char *pszWadFile;
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memset( g_textures, 0 , sizeof( g_textures ));
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wadlist.count = 0;
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if( g_numentities <= 0 )
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return;
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pszWadString = ValueForKey( g_entities, "wad" );
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if( !*pszWadString ) pszWadString = ValueForKey( g_entities, "_wad" );
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if( !*pszWadString ) return; // may be -nowadtextures was used?
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Q_strncpy( wadstring, pszWadString, MAX_VALUE - 2 );
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wadstring[MAX_VALUE-1] = 0;
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if( !Q_strchr( wadstring, ';' ))
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Q_strcat( wadstring, ";" );
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// parse wad pathes
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for( pszWadFile = strtok( wadstring, ";" ); pszWadFile != NULL; pszWadFile = strtok( NULL, ";" ))
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{
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COM_FixSlashes( pszWadFile );
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COM_FileBase( pszWadFile, wadlist.wadnames[wadlist.count++] );
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if( wadlist.count >= MAX_TEXFILES )
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break; // too many wads...
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}
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}
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miptex_t *GetTextureByMiptex( int miptex )
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{
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ASSERT( g_dtexdata != NULL );
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int nummiptex = ((dmiptexlump_t*)g_dtexdata)->nummiptex;
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char texname[64];
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int ofs;
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if( miptex < 0 || miptex >= nummiptex )
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return NULL; // bad miptex ?
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if(( ofs = ((dmiptexlump_t*)g_dtexdata)->dataofs[miptex] ) == -1 )
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return NULL; // texture is completely missed
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// check cache
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if( g_textures[miptex] )
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return g_textures[miptex];
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miptex_t *mt = (miptex_t *)(&g_dtexdata[ofs]);
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// trying wad texture (force while g_wadtextures is 1)
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if( g_wadtextures || mt->offsets[0] <= 0 )
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{
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Q_snprintf( texname, sizeof( texname ), "%s.mip", mt->name );
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// check wads in reverse order
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for( int i = wadlist.count - 1; i >= 0; i-- )
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{
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char *texpath = va( "%s.wad/%s", wadlist.wadnames[i], texname );
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if( FS_FileExists( texpath, false ))
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{
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g_textures[miptex] = (miptex_t *)FS_LoadFile( texpath, NULL, false );
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break;
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}
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}
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}
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// wad failed, so use internal texture (if present)
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if( mt->offsets[0] > 0 && !g_textures[miptex] )
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{
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size_t size = sizeof( miptex_t ) + ((mt->width * mt->height * 85) >> 6) + sizeof( short ) + 768;
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g_textures[miptex] = (miptex_t *)Mem_Alloc( size, C_FILESYSTEM );
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memcpy( g_textures[miptex], &g_dtexdata[ofs], size );
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}
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return g_textures[miptex];
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}
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void TEX_FreeTextures( void )
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{
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// purge texture cache
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for( int i = 0; i < MAX_MAP_TEXTURES; i++ )
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{
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Mem_Free( g_textures[i], C_FILESYSTEM );
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}
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}
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