/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
gameEngine = new GameEngine();
base.Initialize();
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
kb = Keyboard.GetState();
if (kb.IsKeyDown(Keys.Back) && kbOld.IsKeyUp(Keys.Back))
gameEngine = new GameEngine();
if (kb.IsKeyDown(Keys.Enter) && kbOld.IsKeyUp(Keys.Enter))
gameEngine = new GameEngine("dog", "muffin");
if (kb.IsKeyDown(Keys.Space) && kbOld.IsKeyUp(Keys.Space)) //Will cause NullReferenceException in Draw method
gameEngine = null;
kbOld = kb;
base.Update(gameTime);
}