(svn r13674) -Fix [FS#2127]: crash when drawing a non-real sprite. The drawing of the non-real sprite is caused when two NewGRFs replace the same sprite and the first replaces it with a real sprite (and thus assumes it remains a real sprite) and the second replaces it with a non-real sprite. OpenTTD already looked at whether the sprite to load should be seen as a real or non-real sprite, but it failed to replace non-real sprites with a substitute real sprite when getting the sprite from the cache.
/* $Id$ */
/** @file spritecache.h Functions to cache sprites in memory. */
#ifndef SPRITECACHE_H
#define SPRITECACHE_H
#include "gfx_type.h"
struct Sprite {
byte height;
uint16 width;
int16 x_offs;
int16 y_offs;
byte data[VARARRAY_SIZE];
};
extern uint _sprite_cache_size;
const void *GetRawSprite(SpriteID sprite, bool real_sprite);
bool SpriteExists(SpriteID sprite);
static inline const Sprite *GetSprite(SpriteID sprite)
{
return (Sprite*)GetRawSprite(sprite, true);
}
static inline const byte *GetNonSprite(SpriteID sprite)
{
return (byte*)GetRawSprite(sprite, false);
}
void GfxInitSpriteMem();
void IncreaseSpriteLRU();
bool LoadNextSprite(int load_index, byte file_index, uint file_sprite_id);
void DupSprite(SpriteID old_spr, SpriteID new_spr);
#endif /* SPRITECACHE_H */