如何正确设置libgdx中的屏幕

Question

null

这是这个问题的视频

下面是我如何切换屏幕的代码：

从游戏第一次打开到主菜单：

public class RadiationPigeon extends Game {

public static final float PPM = 100;

public static SpriteBatch batch;


@Override
public void create () {
    batch = new SpriteBatch();
    setScreen(new MainMenuScreen(this));
}

@Override
public void render () {
    super.render();
}


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

private RadiationPigeon radiationPigeon;

public MainMenuScreen(RadiationPigeon radiationPigeon){
    this.radiationPigeon = radiationPigeon;
}

playButton.addListener(new InputListener() {
        public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {

            return true;

        }

        public void touchUp (InputEvent event, float x, float y, int pointer, int button) {

            radiationPigeon.setScreen(new GameScreen(radiationPigeon)); 
//I give GameScreen radiationpigeon so that the screen can be set back to MainMenu

        }
    });

private RadiationPigeon radiationPigeon;

public GameScreen(RadiationPigeon radiationPigeon){

    world.setContactListener(new ContactListener());
    Timer timer = new Timer();
    timer.schedule(new BatAttackChanceCounter(), 0, 1000);
    this.radiationPigeon = radiationPigeon;
}

pauseButton.addListener(new InputListener() {
        public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {

            return true;

        }

        public void touchUp (InputEvent event, float x, float y, int pointer, int button) {

            //paused = true;
            radiationPigeon.setScreen(new MainMenuScreen(radiationPigeon));

        }
    });

@Override
public void render(float delta) {

    Gdx.gl.glClearColor(1, 1, 1, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
    stage.act();
    RadiationPigeon.batch.begin();
    stage.draw();
    RadiationPigeon.batch.end();

}

GamesCreen：

@Override
public void render(float delta) {

    update(delta);

    Gdx.gl.glClearColor(0, 0,0, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    RadiationPigeon.batch.setProjectionMatrix(pigeoncam.combined);

    RadiationPigeon.batch.begin();

    //RadiationPigeon.batch.draw(pausedScreen, pigeoncam.position.x - (250 / RadiationPigeon.PPM), pigeoncam.position.y - pigeoncam.viewportHeight / 2, 5, 5);


    RadiationPigeon.batch.end();


    b2dr.render(world, pigeoncam.combined);

    stage.draw();

    hud.stage.draw();
}

Answer 1

经过多次反复试验，我终于解决了我的问题。我设置屏幕的方式没有问题（对于任何设置屏幕有困难的人，我提供的代码可以工作）。问题出在实际的按钮和图像上。我做了一些静态的，因为我需要在GamesCreen中使用相同的按钮样式和字体。我认为这会节省内存，但是，一旦在创建它们的屏幕之外（MainMenuScreen）访问它们，它们将丢失所有的值，基本上使它们为空，而不使它们为空。

对按钮的工作方式缺乏了解是造成这个问题的原因

编辑：