void Update()
{
if (gameScene != null)
{
gameScene.Update();
}
}
/// <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)
{
float seconds = (float)gameTime.ElapsedGameTime.Milliseconds / 1000f;
CurrentScene.HandleInput(seconds);
CurrentScene.Update(seconds);
base.Update(gameTime);
}