PressStartScreen

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using EasyStorage;


namespace Pong
{
    class PressStartScreen : MenuScreen
    {
        IAsyncSaveDevice saveDevice;
        public PressStartScreen()
            : base("")
        {
            MenuEntry startMenuEntry = new MenuEntry("Press A to start");
            startMenuEntry.Selected += StartMenuEntrySelected;
            MenuEntries.Add(startMenuEntry);
        }
        void StartMenuEntrySelected(object sender, PlayerIndexEventArgs e)
        {
            PromptMe();
        }
        private void PromptMe()
        {
            // we can set our supported languages explicitly or we can allow the
            // game to support all the languages. the first language given will
            // be the default if the current language is not one of the supported
            // languages. this only affects the text found in message boxes shown
            // by EasyStorage and does not have any affect on the rest of the game.
            EasyStorageSettings.SetSupportedLanguages(Language.English);
            // on Windows Phone we use a save device that uses IsolatedStorage
            // on Windows and Xbox 360, we use a save device that gets a
            //shared StorageDevice to handle our file IO.
            // create and add our SaveDevice
            SharedSaveDevice sharedSaveDevice = new SharedSaveDevice();
            ScreenManager.Game.Components.Add(sharedSaveDevice);
            // make sure we hold on to the device
            saveDevice = sharedSaveDevice;
            // hook two event handlers to force the user to choose a new device if they cancel the
            // device selector or if they disconnect the storage device after selecting it
            sharedSaveDevice.DeviceSelectorCanceled +=
                (s, e) => e.Response = SaveDeviceEventResponse.Force;
            sharedSaveDevice.DeviceDisconnected +=
                (s, e) => e.Response = SaveDeviceEventResponse.Force;
            // prompt for a device on the first Update we can
            sharedSaveDevice.PromptForDevice();
            sharedSaveDevice.DeviceSelected += (s, e) =>
            {
                //Save our save device to the global counterpart, so we can access it
                //anywhere we want to save/load
                Global.SaveDevice = (SaveDevice)s;
                //Once they select a storage device, we can load the main menu.
                //You'll notice I hard coded PlayerIndex.One here. You'll need to
                //change that if you plan on releasing your game. I linked to an
                //example on how to do that but here's the link if you need it.
                //<a href="http://blog.nickgravelyn.com/2009/03/basic-handling-of-multiple-controllers/">http://blog.nickgravelyn.com/2009/03/basic-handling-of-multiple-controllers/</a>
                //We need to perform a check to see if we're on the Press Start Screen.
                //If a storage device is selected NOT from this page, we don't want to
                //create a new Main Menu screen! (Thanks @FreelanceGames for the mention)
                if(this.IsActive)
                    ScreenManager.AddScreen(new MainMenuScreen(), null);
            };
        }
    }
}