diff options
Diffstat (limited to 'src/tilearea_type.h')
| -rw-r--r-- | src/tilearea_type.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/tilearea_type.h b/src/tilearea_type.h index 5826ce116..1b3832a84 100644 --- a/src/tilearea_type.h +++ b/src/tilearea_type.h @@ -94,6 +94,11 @@ public: * Move ourselves to the next tile in the rectange on the map. */ virtual TileIterator& operator ++() = 0; + + /** + * Allocate a new iterator that is a copy of this one. + */ + virtual TileIterator *Clone() const = 0; }; /** Iterator to iterate over a tile area (rectangle) of the map. */ @@ -129,6 +134,11 @@ public: } return *this; } + + virtual TileIterator *Clone() const + { + return new OrthogonalTileIterator(*this); + } }; /** Iterator to iterate over a diagonal area of the map. */ @@ -145,6 +155,11 @@ public: DiagonalTileIterator(TileIndex begin, TileIndex end); TileIterator& operator ++(); + + virtual TileIterator *Clone() const + { + return new DiagonalTileIterator(*this); + } }; /** |