@tool

extends Interactable2D
class_name Closeup2D

# 退出信号，默认 arg 为 null，可能是一个 bool 值，从 packed_scene 的 exit 信号中传递过来
signal exit(arg)

@export var packed_scene: PackedScene
@export var quit_closeup_on_escape := true
var current_child: Node


func _ready() -> void:
	super._ready()
	if Engine.is_editor_hint():
		return
	interacted.connect(display)


# 可以直接调用
func display() -> void:
	if current_child:
		return
	if packed_scene:
		if GlobalConfig.DEBUG:
			print("[" + name + "] call lock")
		SceneManager.lock_player(0, action_key)
		# 展示时，禁用 sign_mark 的输入
		sign_mark.pass_unhandled_input = true
		current_child = packed_scene.instantiate()
		add_child(current_child)
		if current_child.has_signal("exit"):
			current_child.connect("exit", _exit)
		elif GlobalConfig.DEBUG:
			print("[特写界面] no exit signal, packed_scene:", packed_scene)


func _exit(arg = null):
	if current_child:
		if GlobalConfig.DEBUG:
			print("[" + name + "] call lock")
		SceneManager.unlock_player()
		if current_child:
			remove_child(current_child)
			current_child.queue_free()
		current_child = null
		print("quit [", name, "] arg=", arg)
		exit.emit(arg)
	# 退出时，恢复 sign_mark 的输入
	sign_mark.pass_unhandled_input = false


func _unhandled_input(event: InputEvent) -> void:
	if not current_child:
		return
	if (
		quit_closeup_on_escape
		and (event.is_action_pressed("cancel") or event.is_action_pressed("escape"))
	):
		_exit()
		get_viewport().set_input_as_handled()
	# 在有特写界面时，阻塞 interact 输入
	elif event.is_action_pressed("interact"):
		get_viewport().set_input_as_handled()