#ifndef MAP_H #define MAP_H #include "stdafx.h" #define TILE_FROM_XY(x,y) (int)((((y) >> 4) << MapLogX()) + ((x) >> 4)) #define TILE_XY(x,y) (((y) << MapLogX()) + (x)) #define TILE_MASK(x) ((x) & ((1 << (MapLogX() + MapLogY())) - 1)) extern byte *_map_type_and_height; extern byte *_map_owner; extern uint16 *_map2; extern byte *_map3_lo; extern byte *_map3_hi; extern byte *_map5; extern byte *_map_extra_bits; void InitMap(uint log_x, uint log_y); // 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(); } // Scale a number relative to the map size uint ScaleByMapSize(uint); // Scale relative to the number of tiles uint ScaleByMapSize1D(uint); // Scale relative to the circumference of the map typedef uint32 TileIndex; static inline uint TileX(TileIndex tile) { return tile & MapMaxX(); } static inline uint TileY(TileIndex tile) { return tile >> MapLogX(); } typedef int32 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]); } #endif