extends Line2D

var queue: Array
@export var MAX_LENGTH: int
var shrinking = false
@export var OPACITY_SHRINK_RATE = 5
@export var SIZE_SHRINK_RATE = 5

# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	queue.push_front(global_position)
	if queue.size() > MAX_LENGTH:
		queue.pop_back()
	clear_points()
	for point in queue:
		add_point(point - global_position)
	if shrinking:
		modulate.a = lerpf(modulate.a, 0, OPACITY_SHRINK_RATE * delta)
		width = lerpf(width, 0, SIZE_SHRINK_RATE * delta)
		$PointLight2D.energy = lerpf($PointLight2D.energy, 0, OPACITY_SHRINK_RATE * delta)
		$Sprite2D.visible = false