class_name InteractionRay
extends RayCast3D

signal focused_gained(interaction_area: InteractionArea)
signal focus_lost(interaction_area: InteractionArea)

var is_interacting: bool = false
var focused_area: InteractionArea
var had_focus: bool = false


func _physics_process(_delta: float) -> void:
	var collider: Object = get_collider()

	#if is_colliding() and collider is InteractionArea and focused_area != collider:
		#focused_area = collider
		#focused_gained.emit(focused_area)
	#elif not collider is InteractionArea and is_instance_valid(focused_area):
		#focused_area = null
		#focused_gained.emit(null)


	if collider == focused_area:
		if not is_instance_valid(focused_area) and had_focus:
			had_focus = false
			focus_lost.emit(null)

		return

	if is_instance_valid(focused_area):
		focused_area.set_area_focused(false)
		had_focus = false
		focus_lost.emit(focused_area)

	focused_area = collider if collider is InteractionArea else null
	focused_gained.emit(focused_area)

	if is_instance_valid(focused_area):
		had_focus = true
		focused_area.set_area_focused(true)


func get_interaction() -> InteractionArea:
	var collider: Object = get_collider()
	if collider is InteractionArea:
		return collider

	return null