public void Update(ref ApplicationState appState, InputState input, PlayerIndex[] controllingPlayer)
        {
            base.Update(input, controllingPlayer);

            if (confirm == true)
            {
                switch (quitScreen.Update(input, controllingPlayer))
                {
                case 1: appState = ApplicationState.InitaliseApp;
                    break;

                case 0: confirm = false;
                    menuIndex   = 1;
                    return;
                }
            }

            if (selectedIndex == 0 || (input.IsNewButtonPress(ButtonMappings.Pad_BBtn, controllingPlayer[0], out controllingPlayer[1]) ||
                                       input.IsNewKeyPress(ButtonMappings.Keyboard_BBtn, controllingPlayer[0], out controllingPlayer[1])))
            {
                menuIndex = 0;
                appState  = ApplicationState.Playing;
            }
            else if (selectedIndex == 1)
            {
                confirm = true;
                quitScreen.Reset();
            }
        }