public Menu(IPaint ui)
{
var position = 0;
painter = ui;
Position = new Coordinates();
MenuButtons = new List<Button>();
MenuButtons.Add(new StartButton(MenuButtons) {Position = new Coordinates(10, position += 3)});
MenuButtons.Add(new ScoreButton(MenuButtons) {Position = new Coordinates(10, position += 3)});
MenuButtons.Add(new ExitButton(MenuButtons) {Position = new Coordinates(10, position += 3)});
MenuButtons[SelectedButton].IsSelected = true;
painter.RequireScreenUpdate();
}