如何在LibGdx游戏中添加过渡效果？

import com.badlogic.gdx.Game;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.actions.Actions;
import com.badlogic.gdx.scenes.scene2d.actions.AlphaAction;
import com.badlogic.gdx.scenes.scene2d.actions.SequenceAction;
import com.badlogic.gdx.scenes.scene2d.ui.Image;

public class MyGame extends Game {
    private SpriteBatch batch;
    private Stage stage;
    private Image transitionImage;

    @Override
    public void create() {
        batch = new SpriteBatch();
        stage = new Stage();
        transitionImage = new Image(new Texture("transition.png")); // 过渡效果的图片

        // 设置过渡效果图片的初始透明度为0
        transitionImage.getColor().a = 0;

        // 创建一个淡入淡出的过渡动画
        AlphaAction fadeIn = Actions.fadeIn(1.0f);
        AlphaAction fadeOut = Actions.fadeOut(1.0f);
        SequenceAction transition = Actions.sequence(fadeIn, fadeOut);

        // 将过渡动画添加到过渡效果图片上
        transitionImage.addAction(transition);

        // 将过渡效果图片添加到舞台中
        stage.addActor(transitionImage);
    }

    @Override
    public void render() {
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        batch.begin();
        stage.draw();
        batch.end();
    }

    @Override
    public void dispose() {
        batch.dispose();
        stage.dispose();
    }
}