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(svn r21490) -Codechange: abstract/encapsulate the map area iterating a bit

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rubidium
2010-12-12 20:58:33 +00:00
parent e0351ab414
commit cdd35c6a51
3 changed files with 54 additions and 25 deletions
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24
src/map_func.h
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@@ -333,30 +333,6 @@ uint DistanceMaxPlusManhattan(TileIndex, TileIndex); ///< Max + Manhattan
uint DistanceFromEdge(TileIndex); ///< shortest distance from any edge of the map
uint DistanceFromEdgeDir(TileIndex, DiagDirection); ///< distance from the map edge in given direction
/**
* A loop which iterates to a square of tiles
*
* This macro starts 2 nested loops which iterates over a square of tiles.
*
* @param var The name of the variable which contains the current tile
* @param w The width (x-width) of the square
* @param h The heigth (y-width) of the square
* @param tile The start tile of the square
*/
#define TILE_LOOP(var, w, h, tile) \
for (uint var = tile, cur_h = (h); cur_h > 0; --cur_h, var += TileDiffXY(0, 1) - (w)) \
for (uint cur_w = (w); cur_w > 0; --cur_w, var++)
/**
* A loop which iterates over the tiles of a TileArea
*
* This macro starts 2 nested loops which iterates over a square of tiles.
*
* @param var The name of the variable which contains the current tile
* @param ta The tile area to search over
*/
#define TILE_AREA_LOOP(var, ta) TILE_LOOP(var, ta.w, ta.h, ta.tile)
/**
* Convert a DiagDirection to a TileIndexDiff
*