extends ColorRect
var fade = false
var unfade = false
var transparency = 0

func _process(_delta):
	if fade and not unfade:
		await get_tree().create_timer(0.01).timeout
		if color.a < 1:
			color = Color(0, 0, 0, transparency)
		else:
			color = Color(0, 0, 0, 1)
			fade = false
		transparency += 0.01

	if unfade and not fade:
		await get_tree().create_timer(0.01).timeout
		if color.a > 0:
			color = Color(0, 0, 0, transparency)
		else:
			color = Color(0, 0, 0, 0)
			unfade = false
		transparency -= 0.01

	if fade and unfade:
		color = Color(0, 0, 0, 100)

func _on_dialog_fade_to_black():
	transparency = 0
	unfade = false
	fade = true

func _on_dialog_unfade():
	transparency = 1
	fade = false
	unfade = true