extends Area3D
class_name ExitTrigger
## Level exit volume. Floating door billboard ONLY for indoor exits (show_door).
## Outdoor transitions into buildings use ModelProp [E], not this door art.

@export var next_scene_id: String = ""
@export var use_goto_next: bool = true
@export var require_flag: String = ""
## Indoor only: floating door billboard. Outside houses leave this false.
@export var show_door: bool = false
@export var texture_path: String = "res://assets/sprites/placeholders/door.png"
@export var billboard_height: float = 2.05

func _ready() -> void:
	body_entered.connect(_on_body_entered)
	collision_layer = 0
	collision_mask = 2 # player layer
	add_to_group("exit_trigger")
	if show_door:
		_ensure_door_art()

func _ensure_door_art() -> void:
	if texture_path == "":
		return
	var bill := get_node_or_null("BillboardSprite")
	if bill == null:
		var packed: PackedScene = load("res://scenes/prefabs/billboard_sprite.tscn")
		if packed == null:
			return
		bill = packed.instantiate()
		bill.name = "BillboardSprite"
		add_child(bill)
	if bill.has_method("set_target_height"):
		bill.set_target_height(billboard_height)
	if bill.has_method("set_texture"):
		var tex: Texture2D = load(texture_path)
		if tex:
			bill.set_texture(tex)

func _on_body_entered(body: Node3D) -> void:
	if not body.is_in_group("player"):
		return
	if require_flag != "" and not GameState.get_flag(require_flag, false):
		var ui := get_node_or_null("/root/UIRoot")
		if ui and ui.has_method("show_dialog"):
			ui.show_dialog(Locale.tr_key("exit_locked"), 3.0)
		return
	if use_goto_next and next_scene_id == "":
		GameState.goto_next()
	elif next_scene_id != "":
		GameState.goto_scene(next_scene_id)