Adds a collision polygon to the tile on the given TileSet physics layer. Returns the one-way margin (for one-way platforms) of the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Returns the points of the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Returns how many polygons the tile has for TileSet physics layer with index [code]layer_id[/code]. Returns the custom data value for custom data layer named [code]layer_name[/code]. Returns the custom data value for custom data layer with index [code]layer_id[/code]. Returns the navigation polygon of the tile for the TileSet navigation layer with index [code]layer_id[/code]. Returns the occluder polygon of the tile for the TileSet occlusion layer with index [code]layer_id[/code]. Returns the tile's terrain bit for the given [code]peering_bit[/code] direction. Returns whether one-way collisions are enabled for the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Removes the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Enables/disables one-way collisions on the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Enables/disables one-way collisions on the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Sets the points of the polygon at index [code]polygon_index[/code] for TileSet physics layer with index [code]layer_id[/code]. Sets the polygons count for TileSet physics layer with index [code]layer_id[/code]. Sets the tile's custom data value for the TileSet custom data layer with name [code]layer_name[/code]. Sets the tile's custom data value for the TileSet custom data layer with index [code]layer_id[/code]. Sets the navigation polygon for the TileSet navigation layer with index [code]layer_id[/code]. Sets the occluder for the TileSet occlusion layer with index [code]layer_id[/code]. Sets the tile's terrain bit for the given [code]peering_bit[/code] direction.