# Collisions The Collisions object is a List\. When a LayeredTileMap is created (usually from TMX), each tile layer is checked for tiles with shapes. If any tiles on a layer contain shapes (defined in the Tileset), then a TileShapeCollection will be created for that layer. If tiles have shapes defined, but do not have a Type defined, then the name of the TileShapeCollection matches the name of the layer. If a tile defines a type, then the TileShapeCollection will be named after the Type. Note that this is populated from the shapes added to tiles in the tileset, as opposed to the ShapeCollections object which is populated based on shapes added to object layers. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.flatredball.com/flatredball/tiled-plugin/flatredball-tilegraphics-layeredtilemap/collisions.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.