/// <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)
{
if (_nextState != null)
{
_currentState = _nextState;
_currentState.LoadContent();
_nextState = null;
}
_currentState.Update(gameTime);
_currentState.PostUpdate(gameTime);
base.Update(gameTime);
}
