Godot 2D Char Movement

func process_movement(delta):
	var motion = Vector2(0,0)

	if Input.is_action_pressed("move_up"):
		motion += Vector2(0, -1)
		set_rot(0)
		#print("up")
	if Input.is_action_pressed("move_down"):
		motion += Vector2(0, 1)
		set_rot(180)
		#print("down")
	if Input.is_action_pressed("move_right"):
		motion += Vector2(1, 0)
		set_rot(-90)
		#print("right")
	if Input.is_action_pressed("move_left"):
		motion += Vector2(-1, 0)
		set_rot(90)
		#print("left")

	motion = motion.normalized() * speed * delta

	move(motion)