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39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
#ifndef MAP_H
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#define MAP_H
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#define TILE_X_BITS 8
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#define TILE_Y_BITS 8
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extern byte _map_type_and_height[];
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extern byte _map5[];
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extern byte _map3_lo[];
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extern byte _map3_hi[];
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extern byte _map_owner[];
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extern uint16 _map2[];
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extern byte _map_extra_bits[];
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// binary logarithm of the map size, try to avoid using this one
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static inline uint MapLogX(void) { extern uint _map_log_x; return _map_log_x; }
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static inline uint MapLogY(void) { extern uint _map_log_y; return _map_log_y; }
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/* The size of the map */
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static inline uint MapSizeX(void) { return 1 << MapLogX(); }
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static inline uint MapSizeY(void) { return 1 << MapLogY(); }
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/* The maximum coordinates */
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static inline uint MapMaxX(void) { return MapSizeX() - 1; }
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static inline uint MapMaxY(void) { return MapSizeY() - 1; }
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/* The number of tiles in the map */
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static inline uint MapSize(void) { return MapSizeX() * MapSizeY(); }
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typedef int16 TileIndexDiff;
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static inline TileIndexDiff TileOffsByDir(uint dir)
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{
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extern const TileIndexDiff _tileoffs_by_dir[4];
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assert(dir < lengthof(_tileoffs_by_dir));
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return _tileoffs_by_dir[dir];
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}
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#endif
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