extends Node

#The time, in seconds, it should take for the character to grow up
export var GrowUpTime = 2.0
export var IsBigTime = 5.0
export var GrowDownTime = 1.0

#How much bigger should the player become
export var GrowUpFactor = 5

#How much slower should the player become
export var SlowFactor = 8

func GiantRoutine(player, delta):
	var elapsed = delta
	var fast_speed = player.MAX_SPEED
	var slow_speed = player.MAX_SPEED / SlowFactor
	var fast_acc = player.ACCELERATION
	var slow_acc = player.ACCELERATION / SlowFactor
	var small_scale = player.transform.get_scale()
	var big_scale = player.transform.get_scale() * GrowUpFactor
	var sprite = player.get_node("Sprite")
	var coll = player.get_node("CollisionShape2D")
	
	while elapsed < GrowUpTime:
		player.MAX_SPEED = lerp(fast_speed, slow_speed, elapsed / GrowUpTime)
		player.ACCELERATION = lerp(fast_acc, slow_acc, elapsed / GrowUpTime)
		setScale(sprite, coll, lerp(small_scale, big_scale, elapsed / GrowUpTime))
		elapsed += yield()
		
	elapsed -= GrowUpTime;
	while elapsed < IsBigTime:
		elapsed += yield()
	elapsed -= IsBigTime;
		
	while elapsed < GrowDownTime:
		player.MAX_SPEED = lerp(slow_speed, fast_speed, elapsed / GrowDownTime)
		player.ACCELERATION = lerp(slow_acc, fast_acc, elapsed / GrowDownTime)
		setScale(sprite, coll, lerp(big_scale, small_scale, elapsed / GrowDownTime))
		elapsed += yield()

func setScale(sprite, coll, scale):
	sprite.scale = scale;
	coll.scale = scale;
	
func StartEffect(player):
	var rout = GiantRoutine(player, 0)
	return rout