Library of meshes. A library of meshes. Contains a list of [Mesh] resources, each with a name and ID. This resource is used in [GridMap]. Clears the library. Create a new item in the library, supplied as an ID. Returns the list of items. Returns the mesh of the item. Returns the name of the item. Returns a generated item preview (a 3D rendering in isometric perspective). [b]Note:[/b] Since item previews are only generated in an editor context, this function will return an empty [Texture] in a running project. Gets an unused ID for a new item. Removes the item. Sets the item's mesh. Sets the item's name.