public VerticalMenu(double x, double y, Input.Input input)
 {
     _input = input;
     _position = new Vector(x, y, 0);
     Spacing = 50;
 }
 public static Input GetInput()
 {
     if (_input == null) {
         _input = new EarthCoreEngine.Input.Input();
     }
     return _input;
 }