author | tron |
Fri, 07 Jan 2005 17:02:43 +0000 | |
changeset 926 | bd4312619522 |
parent 909 | 81bc9ef93f50 |
child 927 | 28f45a22a564 |
permissions | -rw-r--r-- |
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#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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(svn r1414) Move TileIndex, TILE_MASK and GET_TILE_[XY] to map.h and turn the latter into inline functions names Tile[XY]
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#define TILE_MASK(x) (int)((x) & ((1 << (MapLogX() + MapLogY())) - 1)) |
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(svn r1288) -Codechange: changed _map2 to an uint16. It is still saved and loaded as
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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 uint16 TileIndex; |
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static inline uint TileX(TileIndex tile) |
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{ |
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return tile & MapMaxX(); |
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} |
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static inline uint TileY(TileIndex tile) |
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{ |
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return tile >> MapLogX(); |
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} |
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typedef int16 TileIndexDiff; |
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typedef struct TileIndexDiffC { |
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int16 x; |
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int16 y; |
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} TileIndexDiffC; |
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static inline TileIndexDiff ToTileIndexDiff(TileIndexDiffC tidc) |
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{ |
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return (tidc.y << MapLogX()) + tidc.x; |
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} |
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static inline TileIndexDiff TileOffsByDir(uint dir) |
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{ |
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extern const TileIndexDiffC _tileoffs_by_dir[4]; |
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assert(dir < lengthof(_tileoffs_by_dir)); |
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return ToTileIndexDiff(_tileoffs_by_dir[dir]); |
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} |
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#endif |