00001
00002
00005 #ifndef MAP_FUNC_H
00006 #define MAP_FUNC_H
00007
00008 #include "tile_type.h"
00009 #include "map_type.h"
00010 #include "direction_func.h"
00011
00012 extern uint _map_tile_mask;
00013
00020 #define TILE_MASK(x) ((x) & _map_tile_mask)
00021
00028 extern Tile *_m;
00029
00036 extern TileExtended *_me;
00037
00041 void AllocateMap(uint size_x, uint size_y);
00042
00048 static inline uint MapLogX()
00049 {
00050 extern uint _map_log_x;
00051 return _map_log_x;
00052 }
00053
00059 static inline uint MapLogY()
00060 {
00061 extern uint _map_log_y;
00062 return _map_log_y;
00063 }
00064
00069 static inline uint MapSizeX()
00070 {
00071 extern uint _map_size_x;
00072 return _map_size_x;
00073 }
00074
00079 static inline uint MapSizeY()
00080 {
00081 extern uint _map_size_y;
00082 return _map_size_y;
00083 }
00084
00089 static inline uint MapSize()
00090 {
00091 extern uint _map_size;
00092 return _map_size;
00093 }
00094
00099 static inline uint MapMaxX()
00100 {
00101 return MapSizeX() - 1;
00102 }
00103
00108 static inline uint MapMaxY()
00109 {
00110 return MapSizeY() - 1;
00111 }
00112
00116 uint ScaleByMapSize(uint);
00117
00121 uint ScaleByMapSize1D(uint);
00122
00133 typedef int32 TileIndexDiff;
00134
00142 static inline TileIndex TileXY(uint x, uint y)
00143 {
00144 return (y * MapSizeX()) + x;
00145 }
00146
00158 static inline TileIndexDiff TileDiffXY(int x, int y)
00159 {
00160
00161
00162
00163
00164 return (y * MapSizeX()) + x;
00165 }
00166
00167 static inline TileIndex TileVirtXY(uint x, uint y)
00168 {
00169 return (y >> 4 << MapLogX()) + (x >> 4);
00170 }
00171
00172
00178 static inline uint TileX(TileIndex tile)
00179 {
00180 return tile & MapMaxX();
00181 }
00182
00188 static inline uint TileY(TileIndex tile)
00189 {
00190 return tile >> MapLogX();
00191 }
00192
00203 static inline TileIndexDiff ToTileIndexDiff(TileIndexDiffC tidc)
00204 {
00205 return (tidc.y << MapLogX()) + tidc.x;
00206 }
00207
00208
00209 #ifndef _DEBUG
00210
00217 #define TILE_ADD(x,y) ((x) + (y))
00218 #else
00219 extern TileIndex TileAdd(TileIndex tile, TileIndexDiff add,
00220 const char *exp, const char *file, int line);
00221 #define TILE_ADD(x, y) (TileAdd((x), (y), #x " + " #y, __FILE__, __LINE__))
00222 #endif
00223
00231 #define TILE_ADDXY(tile, x, y) TILE_ADD(tile, TileDiffXY(x, y))
00232
00236 TileIndex TileAddWrap(TileIndex tile, int addx, int addy);
00237
00244 static inline TileIndexDiffC TileIndexDiffCByDiagDir(DiagDirection dir)
00245 {
00246 extern const TileIndexDiffC _tileoffs_by_diagdir[DIAGDIR_END];
00247
00248 assert(IsValidDiagDirection(dir));
00249 return _tileoffs_by_diagdir[dir];
00250 }
00251
00258 static inline TileIndexDiffC TileIndexDiffCByDir(Direction dir)
00259 {
00260 extern const TileIndexDiffC _tileoffs_by_dir[DIR_END];
00261
00262 assert(IsValidDirection(dir));
00263 return _tileoffs_by_dir[dir];
00264 }
00265
00276 static inline TileIndex AddTileIndexDiffCWrap(TileIndex tile, TileIndexDiffC diff)
00277 {
00278 int x = TileX(tile) + diff.x;
00279 int y = TileY(tile) + diff.y;
00280 if (x < 0 || y < 0 || x > (int)MapMaxX() || y > (int)MapMaxY())
00281 return INVALID_TILE;
00282 else
00283 return TileXY(x, y);
00284 }
00285
00293 static inline TileIndexDiffC TileIndexToTileIndexDiffC(TileIndex tile_a, TileIndex tile_b)
00294 {
00295 TileIndexDiffC difference;
00296
00297 difference.x = TileX(tile_a) - TileX(tile_b);
00298 difference.y = TileY(tile_a) - TileY(tile_b);
00299
00300 return difference;
00301 }
00302
00303
00304 uint DistanceManhattan(TileIndex, TileIndex);
00305 uint DistanceSquare(TileIndex, TileIndex);
00306 uint DistanceMax(TileIndex, TileIndex);
00307 uint DistanceMaxPlusManhattan(TileIndex, TileIndex);
00308 uint DistanceFromEdge(TileIndex);
00309
00320 #define BEGIN_TILE_LOOP(var, w, h, tile) \
00321 { \
00322 int h_cur = h; \
00323 uint var = tile; \
00324 do { \
00325 int w_cur = w; \
00326 do {
00327
00332 #define END_TILE_LOOP(var, w, h, tile) \
00333 } while (++var, --w_cur != 0); \
00334 } while (var += TileDiffXY(0, 1) - (w), --h_cur != 0); \
00335 }
00336
00343 static inline TileIndexDiff TileOffsByDiagDir(DiagDirection dir)
00344 {
00345 extern const TileIndexDiffC _tileoffs_by_diagdir[DIAGDIR_END];
00346
00347 assert(IsValidDiagDirection(dir));
00348 return ToTileIndexDiff(_tileoffs_by_diagdir[dir]);
00349 }
00350
00357 static inline TileIndexDiff TileOffsByDir(Direction dir)
00358 {
00359 extern const TileIndexDiffC _tileoffs_by_dir[DIR_END];
00360
00361 assert(IsValidDirection(dir));
00362 return ToTileIndexDiff(_tileoffs_by_dir[dir]);
00363 }
00364
00372 static inline TileIndex TileAddByDiagDir(TileIndex tile, DiagDirection dir)
00373 {
00374 return TILE_ADD(tile, TileOffsByDiagDir(dir));
00375 }
00376
00384 typedef bool TestTileOnSearchProc(TileIndex tile, void *user_data);
00385
00389 bool CircularTileSearch(TileIndex *tile, uint size, TestTileOnSearchProc proc, void *user_data);
00390
00394 bool CircularTileSearch(TileIndex *tile, uint radius, uint w, uint h, TestTileOnSearchProc proc, void *user_data);
00395
00401 static inline TileIndex RandomTileSeed(uint32 r)
00402 {
00403 return TILE_MASK(r);
00404 }
00405
00412 #define RandomTile() RandomTileSeed(Random())
00413
00414 #endif