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#ifndef TILES_H
#define TILES_H
#include <map>
#include "SDLCalls.h"
#include "Exception.h"
//----------------------------------------------------------------------------
class TileException : public Exception
{
public:
TileException(Uint8 categoryId, Uint8 tileId);
~TileException();
std::string toString() const;
protected:
Uint8 m_categoryId;
Uint8 m_tileId;
};
//----------------------------------------------------------------------------
/**
* This class is a container for all tiles that can be used in maps.
* The internal storage is organized in a double-indexed map.
* The first key is built out of the category and tile id.
* The second key
*/
class Tiles
{
/// A key type containing the alpha and brightness value.
typedef std::pair<Uint8, Uint8> ABKey;
struct ABLessThan
{
bool operator()(const ABKey &k1, const ABKey &k2) const
{
if (k1.first < k2.first) return true;
if (k1.first == k2.first && k1.second < k2.second) return true;
return false;
}
};
typedef std::map<ABKey, SDL_Surface*, ABLessThan> TileMap;
/// A key type containing the category and tile id.
typedef std::pair<Uint8, Uint8> CTKey;
struct CTLessThan
{
bool operator()(const CTKey &k1, const CTKey &k2) const
{
if (k1.first < k2.first) return true;
if (k1.first == k2.first && k1.second < k2.second) return true;
return false;
}
};
typedef std::map<CTKey, TileMap, CTLessThan> CategoryMap;
public:
//------------------------------------------------------------------------
~Tiles();
//------------------------------------------------------------------------
/**
* @param category The category id.
* @param tile The tile id.
* @param alpha The desired alpha value.
* @param brightness The desired brightness.
*
* @return A const SDL_Surface pointer to the desired tile.
*/
const SDL_Surface *getTile(Uint8 category, Uint8 tile,
Uint8 alpha, Uint8 brightness) const;
//------------------------------------------------------------------------
static void init();
static void destroy();
//------------------------------------------------------------------------
static inline const Tiles *getInstance()
{
return sm_instance;
}
protected:
//------------------------------------------------------------------------
Tiles();
private:
//------------------------------------------------------------------------
/**
* Helper-method for init() to read and store the tiles
* of the given category.
*/
void initCategory(Uint8 category, const char *dir);
//------------------------------------------------------------------------
/**
* Helper-method for getTile() to create and store tiles
* with an alpha value != SDL_ALPHA_OPAQUE or brightness != 255
* on demand.
*/
const SDL_Surface *createTile(Uint8 alpha, Uint8 brightness,
CategoryMap::iterator &iter) const;
//------------------------------------------------------------------------
mutable CategoryMap m_map;
//------------------------------------------------------------------------
static Tiles *sm_instance;
};
#endif //TILES_H
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