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author | rubidium <rubidium@openttd.org> | 2010-12-13 15:13:05 +0000 |
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committer | rubidium <rubidium@openttd.org> | 2010-12-13 15:13:05 +0000 |
commit | b20e77be921acc32b5887f9f35ecae8573c588af (patch) | |
tree | ab5efe19852fb742a511f9b386f5547875dc5996 /src/tilearea_type.h | |
parent | 652e2626010c3cc1a92875ccbaeed61233b1d6fc (diff) | |
download | openttd-b20e77be921acc32b5887f9f35ecae8573c588af.tar.xz |
(svn r21499) -Add: diagonal tile iterator. Based on patch by fonsinchen
Diffstat (limited to 'src/tilearea_type.h')
-rw-r--r-- | src/tilearea_type.h | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/tilearea_type.h b/src/tilearea_type.h index 44a2ba3c2..23813eeb8 100644 --- a/src/tilearea_type.h +++ b/src/tilearea_type.h @@ -73,11 +73,12 @@ protected: { } +public: /** Some compilers really like this. */ virtual ~TileIterator() { } -public: + /** * Get the tile we are currently at. * @return The tile we are at, or INVALID_TILE when we're done. @@ -128,6 +129,27 @@ public: } }; +/** Iterator to iterate over a diagonal area of the map. */ +class DiagonalTileIterator : public TileIterator { +private: + uint base_x, base_y; ///< The base tile x and y coordinates from where the iterating happens. + int a_cur, b_cur; ///< The current (rotated) x and y coordinates of the iteration. + int a_max, b_max; ///< The (rotated) x and y coordinates of the end of the iteration. + +public: + /** + * Construct the iterator. + * @param begin Tile from where to begin iterating. + * @param end Tile where to end the iterating. + */ + DiagonalTileIterator(TileIndex begin, TileIndex end); + + /** + * Move ourselves to the next tile in the rectange on the map. + */ + TileIterator& operator ++(); +}; + /** * A loop which iterates over the tiles of a TileArea. * @param var The name of the variable which contains the current tile. |