#ifndef MAP_H #define MAP_H #define TILE_FROM_XY(x,y) (int)((((y) >> 4) << MapLogX()) + ((x) >> 4)) #define TILE_XY(x,y) (int)(((y) << MapLogX()) + (x)) #define TILE_MASK(x) ((x) & ((1 << (MapLogX() + MapLogY())) - 1)) extern byte _map_type_and_height[]; extern byte _map5[]; extern byte _map3_lo[]; extern byte _map3_hi[]; extern byte _map_owner[]; extern uint16 _map2[]; extern byte _map_extra_bits[]; // binary logarithm of the map size, try to avoid using this one static inline uint MapLogX(void) { extern uint _map_log_x; return _map_log_x; } static inline uint MapLogY(void) { extern uint _map_log_y; return _map_log_y; } /* The size of the map */ static inline uint MapSizeX(void) { return 1 << MapLogX(); } static inline uint MapSizeY(void) { return 1 << MapLogY(); } /* The maximum coordinates */ static inline uint MapMaxX(void) { return MapSizeX() - 1; } static inline uint MapMaxY(void) { return MapSizeY() - 1; } /* The number of tiles in the map */ static inline uint MapSize(void) { return MapSizeX() * MapSizeY(); } typedef uint16 TileIndex; static inline uint TileX(TileIndex tile) { return tile & MapMaxX(); } static inline uint TileY(TileIndex tile) { return tile >> MapLogX(); } typedef int16 TileIndexDiff; typedef struct TileIndexDiffC { int16 x; int16 y; } TileIndexDiffC; static inline TileIndexDiff ToTileIndexDiff(TileIndexDiffC tidc) { return (tidc.y << MapLogX()) + tidc.x; } #ifndef _DEBUG #define TILE_ADD(x,y) ((x) + (y)) #else extern TileIndex TileAdd(TileIndex tile, TileIndexDiff add, const char *exp, const char *file, int line); #define TILE_ADD(x, y) (TileAdd((x), (y), #x " + " #y, __FILE__, __LINE__)) #endif #define TILE_ADDXY(tile, x, y) TILE_ADD(tile, TILE_XY(x, y)) static inline TileIndexDiff TileOffsByDir(uint dir) { extern const TileIndexDiffC _tileoffs_by_dir[4]; assert(dir < lengthof(_tileoffs_by_dir)); return ToTileIndexDiff(_tileoffs_by_dir[dir]); } static inline uint TileHeight(TileIndex tile) { assert(tile < MapSize()); return _map_type_and_height[tile] & 0xf; } static inline void SetTileHeight(TileIndex tile, uint height) { assert(tile < MapSize()); assert(height < 16); _map_type_and_height[tile] &= ~0x0F; _map_type_and_height[tile] |= height; } static inline uint TilePixelHeight(TileIndex tile) { return TileHeight(tile) * 8; } static inline int TileType(TileIndex tile) { assert(tile < MapSize()); return _map_type_and_height[tile] >> 4; } static inline void SetTileType(TileIndex tile, uint type) { assert(tile < MapSize()); _map_type_and_height[tile] &= ~0xF0; _map_type_and_height[tile] |= type << 4; } static inline bool IsTileType(TileIndex tile, int type) { return TileType(tile) == type; } #endif