Exposes a set of scenes as tiles for a [LayeredTileSet] resource. When placed on a [LayeredTileMap], tiles from [LayeredTileSetScenesCollectionSource] will automatically instance an associated scene at the cell's position in the LayeredTileMap. Scenes are instanced as children of the [LayeredTileMap] when it enters the tree. If you add/remove a scene tile in the [LayeredTileMap] that is already inside the tree, the [LayeredTileMap] will automatically instance/free the scene accordingly. Creates a scene-based tile out of the given scene. Returns a newly generated unique ID. Returns the scene ID a following call to [method create_scene_tile] would return. Returns whether the scene tile with [param id] displays a placeholder in the editor. Returns the scene tile ID of the scene tile at [param index]. Returns the [PackedScene] resource of scene tile with [param id]. Returns the number or scene tiles this LayeredTileSet source has. Returns whether this LayeredTileSet source has a scene tile with [param id]. Remove the scene tile with [param id]. Sets whether or not the scene tile with [param id] should display a placeholder in the editor. This might be useful for scenes that are not visible. Changes a scene tile's ID from [param id] to [param new_id]. This will fail if there is already a tile with an ID equal to [param new_id]. Assigns a [PackedScene] resource to the scene tile with [param id]. This will fail if the scene does not extend CanvasItem, as positioning properties are needed to place the scene on the LayeredTileMap.