Function TileMap.updateBitmaskRegion
Applies autotiling rules to the cells in the given region (specified by grid-based X and Y coordinates). Calling with invalid (or missing) parameters applies autotiling rules for the entire tilemap.
Applies autotiling rules to the cells in the given region (specified by grid-based X and Y coordinates). Calling with invalid (or missing) parameters applies autotiling rules for the entire tilemap.