extends Node

#The time, in seconds, it should take for the character to fade to FadeOutValue
export var FadeOutTime = 2.0

#The alpha value we aim for when fading out
export var FadeOutValue = 0.05

var coroutines = []

func AlmostFadeOutRoutine(player, delta):
	var sprite : Sprite  = get_node("Sprite")
	var elapsed = delta	
	var origin = sprite.get_modulate().a
	while sprite.get_modulate().a > FadeOutValue:
		var a = lerp(origin, FadeOutValue, elapsed /  FadeOutTime)
		elapsed += yield()
	pass

func StartEffect(player):
	var rout = AlmostFadeOutRoutine(player, 0)
	coroutines.add(rout)
	pass
	
func FinishEffect():
	pass
	
func UpdateEffect(delta):		
	for rout in coroutines:
		if rout.is_valid():
			rout.resume(delta)
		else:
			coroutines.remove(rout)			
	pass