extends Area2D

## 钻石：走过去自动收集，集齐后碰门过关
@export var erase_placeholder_tile: bool = true


func _ready() -> void:
	body_entered.connect(_on_body_entered)
	if erase_placeholder_tile:
		_erase_placeholder_tile()


func _on_body_entered(body: Node2D) -> void:
	if body.has_method("add_diamond"):
		body.add_diamond()
		queue_free()


func _erase_placeholder_tile() -> void:
	var root: Node = owner if owner != null else get_parent()
	if root == null:
		return
	for layer in root.find_children("*", "TileMapLayer", true, false):
		var cell: Vector2i = layer.local_to_map(layer.to_local(global_position))
		if layer.get_cell_source_id(cell) != -1:
			layer.erase_cell(cell)