class_name SceneTileMapLayer extends TileMapLayer

signal child_registered

var scene_coords: Dictionary[Vector2i, Node] = {}


func _enter_tree() -> void:
	child_entered_tree.connect(_register_child)
	child_exiting_tree.connect(_unregister_child)


func _register_child(child: Node) -> void:
	await child.ready
	var coords = local_to_map(to_local(child.global_position))
	scene_coords[coords] = child
	child.set_meta("tile_coords", coords)
	child_registered.emit()


func _unregister_child(child):
	scene_coords.erase(child.get_meta("tile_coords"))


func get_cell_scene(coords: Vector2i) -> Node:
	return scene_coords.get(coords, null)


func get_scene_coords(scene: Node) -> Vector2i:
	return scene_coords.find_key(scene)