extends Line2D


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

var time = 0
var amplitude = Global.get('user_input').amp
var frequency = Global.get('user_input').freq


#func _draw():
#	if dot_position.x < 1000:
#		velocity.y = amplitude * cos(time * frequency)
#		velocity.x = 5
#		dot_position += velocity * speed * 0.06944
#		draw_circle(dot_position, 2, Color(225, 225, 225))
#		time += 0.06944

func trajectory(delta):
	while dot_position.x < 2000:
		add_point(dot_position)
		velocity.y = amplitude * cos(time * frequency)
		velocity.x = 5
		dot_position += velocity * speed * delta
		time += delta

func _process(delta):
	trajectory(delta)
	update()