private void update(float delta) {	

		FlappyBird.groundWrapScrolling();
		sinWave();

		stage.act(delta);
		if(startbtnListener.getTouched()) {
			((Game) Gdx.app.getApplicationListener()).setScreen(new Play());
			dispose();
		}
//		else if(scorebtnListener.getTouched()) {
//			((Game) Gdx.app.getApplicationListener()).setScreen(new Score());
//			dispose();
//		}
	}