spritecache.h

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00001 /* $Id: spritecache.h 18846 2010-01-17 15:05:25Z frosch $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef SPRITECACHE_H
00013 #define SPRITECACHE_H
00014 
00015 #include "gfx_type.h"
00016 
00018 struct Sprite {
00019   byte height;  
00020   uint16 width; 
00021   int16 x_offs; 
00022   int16 y_offs; 
00023   byte data[];  
00024 };
00025 
00026 extern uint _sprite_cache_size;
00027 
00028 void *GetRawSprite(SpriteID sprite, SpriteType type);
00029 bool SpriteExists(SpriteID sprite);
00030 
00031 static inline const Sprite *GetSprite(SpriteID sprite, SpriteType type)
00032 {
00033   assert(type != ST_RECOLOUR);
00034   return (Sprite*)GetRawSprite(sprite, type);
00035 }
00036 
00037 static inline const byte *GetNonSprite(SpriteID sprite, SpriteType type)
00038 {
00039   assert(type == ST_RECOLOUR);
00040   return (byte*)GetRawSprite(sprite, type);
00041 }
00042 
00043 void GfxInitSpriteMem();
00044 void IncreaseSpriteLRU();
00045 
00046 bool LoadNextSprite(int load_index, byte file_index, uint file_sprite_id);
00047 bool SkipSpriteData(byte type, uint16 num);
00048 void DupSprite(SpriteID old_spr, SpriteID new_spr);
00049 
00050 #endif /* SPRITECACHE_H */

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