private void Update()
    {
        if (Input.GetButtonDown("SpeedUp"))
        {
            shipController.SpeedUp();
        }
        else if (Input.GetButtonDown("SlowDown"))
        {
            shipController.SlowDown();
        }

        if (Input.GetButton("TurnLeft") && !Input.GetButton("TurnRight"))
        {
            shipController.TurnLeft();
        }
        else if (Input.GetButton("TurnRight") && !Input.GetButton("TurnLeft"))
        {
            shipController.TurnRight();
        }
        else
        {
            shipController.StopTurning();
        }
    }