- const Area &AreaAt(const geometry::Vector<int> &) const;
- const Tile &TileAt(const geometry::Vector<int> &) const;
+ Area *AreaAt(const geometry::Vector<int> &);
+ const Area *AreaAt(const geometry::Vector<int> &) const;
+ Tile *TileAt(const geometry::Vector<int> &);
+ const Tile *TileAt(const geometry::Vector<int> &) const;