void Application::update()
{
	Real deltaTime = (mTimer.getMilliseconds() - mLastTime) / 1000.0f;
	mLastTime = mTimer.getMilliseconds();

	if(mActiveState)
	{
		mActiveState->update(deltaTime);

		Root::getSingleton().renderOneFrame();
		Ogre::WindowEventUtilities::messagePump();
		InputManager::getSingletonPtr()->capture();
	}

	if(mReadyToAdvance)
	{
		if(mActiveState)
		{
			mActiveState->exit();
			delete mActiveState;
		}

		if(mStates.size())
		{
			mActiveState = mStates.back();
			mActiveState->enter();
			mStates.pop_back();
			mReadyToAdvance = false;
		}
		else
		{
			shutdown();
			return;
		}
	}
}