extends Line2D


export var speed = 100
var velocity = Vector2(0, 0)
var dot_position = Vector2(0, 0)

var time = 0
export var amplitude = 4
export var frequency = 5


func update_trajectory(delta):
	clear_points()
	while dot_position.x < 1000:
		velocity.y = amplitude * cos(time * frequency)
		velocity.x = 5
		dot_position += velocity * speed * 0.06944
		add_point(dot_position)
		time += 0.06944

func _process(delta):
	update_trajectory(delta)