tron@679: #ifndef MAP_H
tron@679: #define MAP_H
tron@679: 
tron@927: #define TILE_FROM_XY(x,y) (int)((((y) >> 4) << MapLogX()) + ((x) >> 4))
tron@927: #define TILE_XY(x,y) (int)(((y) << MapLogX()) + (x))
tron@679: 
tron@979: #define TILE_MASK(x) ((x) & ((1 << (MapLogX() + MapLogY())) - 1))
tron@926: 
truelight@817: extern byte   _map_type_and_height[];
truelight@817: extern byte   _map5[];
truelight@817: extern byte   _map3_lo[];
truelight@817: extern byte   _map3_hi[];
truelight@817: extern byte   _map_owner[];
truelight@817: extern uint16 _map2[];
truelight@817: extern byte   _map_extra_bits[];
tron@679: 
tron@689: // binary logarithm of the map size, try to avoid using this one
tron@689: static inline uint MapLogX(void)  { extern uint _map_log_x; return _map_log_x; }
tron@689: static inline uint MapLogY(void)  { extern uint _map_log_y; return _map_log_y; }
tron@689: /* The size of the map */
tron@689: static inline uint MapSizeX(void) { return 1 << MapLogX(); }
tron@689: static inline uint MapSizeY(void) { return 1 << MapLogY(); }
tron@689: /* The maximum coordinates */
tron@689: static inline uint MapMaxX(void) { return MapSizeX() - 1; }
tron@689: static inline uint MapMaxY(void) { return MapSizeY() - 1; }
tron@689: /* The number of tiles in the map */
tron@689: static inline uint MapSize(void) { return MapSizeX() * MapSizeY(); }
tron@689: 
tron@926: 
tron@926: typedef uint16 TileIndex;
tron@926: 
tron@926: static inline uint TileX(TileIndex tile)
tron@926: {
tron@926: 	return tile & MapMaxX();
tron@926: }
tron@926: 
tron@926: static inline uint TileY(TileIndex tile)
tron@926: {
tron@926: 	return tile >> MapLogX();
tron@926: }
tron@926: 
tron@926: 
tron@900: typedef int16 TileIndexDiff;
tron@900: 
tron@909: typedef struct TileIndexDiffC {
tron@909: 	int16 x;
tron@909: 	int16 y;
tron@909: } TileIndexDiffC;
tron@909: 
tron@909: static inline TileIndexDiff ToTileIndexDiff(TileIndexDiffC tidc)
tron@909: {
tron@909: 	return (tidc.y << MapLogX()) + tidc.x;
tron@909: }
tron@900: 
tron@955: 
tron@955: #ifndef _DEBUG
tron@955: 	#define TILE_ADD(x,y) ((x) + (y))
tron@955: #else
tron@955: 	extern TileIndex TileAdd(TileIndex tile, TileIndexDiff add,
tron@955: 		const char *exp, const char *file, int line);
tron@955: 	#define TILE_ADD(x, y) (TileAdd((x), (y), #x " + " #y, __FILE__, __LINE__))
tron@955: #endif
tron@955: 
tron@955: #define TILE_ADDXY(tile, x, y) TILE_ADD(tile, TILE_XY(x, y))
tron@955: 
tron@955: 
tron@900: static inline TileIndexDiff TileOffsByDir(uint dir)
tron@900: {
tron@909: 	extern const TileIndexDiffC _tileoffs_by_dir[4];
tron@900: 
tron@900: 	assert(dir < lengthof(_tileoffs_by_dir));
tron@909: 	return ToTileIndexDiff(_tileoffs_by_dir[dir]);
tron@900: }
tron@900: 
tron@1035: 
tron@1044: static inline uint TileHeight(TileIndex tile)
tron@1044: {
tron@1044: 	assert(tile < MapSize());
tron@1044: 	return _map_type_and_height[tile] & 0xf;
tron@1044: }
tron@1044: 
tron@1041: static inline uint TilePixelHeight(TileIndex tile)
tron@1035: {
tron@1044: 	return TileHeight(tile) * 8;
tron@1035: }
tron@1035: 
tron@1035: static inline int TileType(TileIndex tile)
tron@1035: {
tron@1035: 	assert(tile < MapSize());
tron@1035: 	return _map_type_and_height[tile] >> 4;
tron@1035: }
tron@1035: 
tron@1035: static inline bool IsTileType(TileIndex tile, int type)
tron@1035: {
tron@1035: 	return TileType(tile) == type;
tron@1035: }
tron@1035: 
tron@679: #endif