extends Area3D
class_name VoleDetector

signal on
signal off

var intersect_count := 0

func _on_area_entered(area: Area3D) -> void:
	if area is not VoleDetector:
		return
	if intersect_count == 0:
		on.emit()
	intersect_count += 1
	

func _on_area_exited(area: Area3D) -> void:
	if area is not VoleDetector:
		return
	intersect_count -= 1
	if intersect_count == 0:
		off.emit()

func vole():
	return owner