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Location: cpp/openttd-patchpack/source/src/spritecache.h

r25754:d19207ab5c69 2.3 KiB text/x-c Show Annotation Show as Raw Download as Raw

Patric Stout

Cleanup: remove SLE_NULL and friends

We no longer need them. If you want to remove a field .. just
remove it! Because of the headers in the savegame, on loading,
it will do the right thing and skip the field.

Do remember to bump the savegame version, as otherwise older
clients can still load the game, but will reset the field you
have removed .. that might be unintentially.

/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */

/** @file spritecache.h Functions to cache sprites in memory. */

#ifndef SPRITECACHE_H
#define SPRITECACHE_H

#include "gfx_type.h"
#include "spriteloader/spriteloader.hpp"

/** Data structure describing a sprite. */
struct Sprite {
	uint16 height; ///< Height of the sprite.
	uint16 width;  ///< Width of the sprite.
	int16 x_offs;  ///< Number of pixels to shift the sprite to the right.
	int16 y_offs;  ///< Number of pixels to shift the sprite downwards.
	byte data[];   ///< Sprite data.
};

extern uint _sprite_cache_size;

typedef void *AllocatorProc(size_t size);

void *SimpleSpriteAlloc(size_t size);
void *GetRawSprite(SpriteID sprite, SpriteType type, AllocatorProc *allocator = nullptr, SpriteEncoder *encoder = nullptr);
bool SpriteExists(SpriteID sprite);

SpriteType GetSpriteType(SpriteID sprite);
SpriteFile *GetOriginFile(SpriteID sprite);
uint32 GetSpriteLocalID(SpriteID sprite);
uint GetSpriteCountForFile(const std::string &filename, SpriteID begin, SpriteID end);
uint GetMaxSpriteID();


static inline const Sprite *GetSprite(SpriteID sprite, SpriteType type)
{
	assert(type != ST_RECOLOUR);
	return (Sprite*)GetRawSprite(sprite, type);
}

static inline const byte *GetNonSprite(SpriteID sprite, SpriteType type)
{
	assert(type == ST_RECOLOUR);
	return (byte*)GetRawSprite(sprite, type);
}

void GfxInitSpriteMem();
void GfxClearSpriteCache();
void IncreaseSpriteLRU();

SpriteFile &OpenCachedSpriteFile(const std::string &filename, Subdirectory subdir, bool palette_remap);

void ReadGRFSpriteOffsets(SpriteFile &file);
size_t GetGRFSpriteOffset(uint32 id);
bool LoadNextSprite(int load_index, SpriteFile &file, uint file_sprite_id);
bool SkipSpriteData(SpriteFile &file, byte type, uint16 num);
void DupSprite(SpriteID old_spr, SpriteID new_spr);

#endif /* SPRITECACHE_H */