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61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file spritecache.h Functions to cache sprites in memory. */
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#ifndef SPRITECACHE_H
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#define SPRITECACHE_H
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#include "gfx_type.h"
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/** Data structure describing a sprite. */
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struct Sprite {
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uint16 height; ///< Height of the sprite.
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uint16 width; ///< Width of the sprite.
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int16 x_offs; ///< Number of pixels to shift the sprite to the right.
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int16 y_offs; ///< Number of pixels to shift the sprite downwards.
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byte data[]; ///< Sprite data.
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};
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extern uint _sprite_cache_size;
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typedef void *AllocatorProc(size_t size);
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void *GetRawSprite(SpriteID sprite, SpriteType type, AllocatorProc *allocator = nullptr);
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bool SpriteExists(SpriteID sprite);
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SpriteType GetSpriteType(SpriteID sprite);
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uint GetOriginFileSlot(SpriteID sprite);
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uint32 GetSpriteLocalID(SpriteID sprite);
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uint GetSpriteCountForSlot(uint file_slot, SpriteID begin, SpriteID end);
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uint GetMaxSpriteID();
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static inline const Sprite *GetSprite(SpriteID sprite, SpriteType type)
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{
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assert(type != ST_RECOLOUR);
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return (Sprite*)GetRawSprite(sprite, type);
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}
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static inline const byte *GetNonSprite(SpriteID sprite, SpriteType type)
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{
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assert(type == ST_RECOLOUR);
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return (byte*)GetRawSprite(sprite, type);
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}
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void GfxInitSpriteMem();
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void GfxClearSpriteCache();
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void IncreaseSpriteLRU();
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void ReadGRFSpriteOffsets(byte container_version);
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size_t GetGRFSpriteOffset(uint32 id);
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bool LoadNextSprite(int load_index, byte file_index, uint file_sprite_id, byte container_version);
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bool SkipSpriteData(byte type, uint16 num);
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void DupSprite(SpriteID old_spr, SpriteID new_spr);
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#endif /* SPRITECACHE_H */
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