@Override
	public void render(float delta) {
		Gdx.gl20.glClear(GL20.GL_COLOR_BUFFER_BIT);

		sb.begin();
		sb.draw(background, 0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());		
		sb.draw(ground, 0, -70, Gdx.graphics.getWidth(), 150);
		sb.end();
		
		update(delta);
	}