java - Spritebatch 未绘制任何 LibGDX

Question

对我来说，这是 LibGDX 中发生过的最奇怪的事情之一。我已经在游戏中的所有其他状态中使用了这些确切的规范，但在不同的名称下，它们都工作正常，除了我的 ShopState，它根本不会渲染任何东西!这是我的类(class)代码:

public class ShopState extends State{
    private Texture bg;
    private Sprite shopLayout;
    private OrthographicCamera shopCam;
    Viewport viewport;

    public ShopState(GameStateManager gsm) {
        super(gsm);
        shopLayout = new Sprite(new Texture(Gdx.files.internal("shopLayout.png")));
        bg = new Texture("bg2.png");
        shopCam = new OrthographicCamera();
        viewport = new StretchViewport(720, 1280, shopCam);
        viewport.apply();
        shopCam.position.set(shopCam.viewportWidth / 2, shopCam.viewportHeight / 2, 0);
        shopLayout.setPosition(shopCam.viewportWidth / 2 - shopLayout.getWidth() / 2, shopCam.viewportHeight / 2 - shopLayout.getHeight() / 2);
        shopLayout.setSize(650, 1100);
    }

    @Override
    public void handleInput() {

    }

    @Override
    public void update(float dt) {
        handleInput();

    }
    @Override
    public void resize(int width, int height){
        viewport.update(width, height);
        shopCam.position.set(shopCam.viewportWidth / 2, shopCam.viewportHeight / 2, 0);
    }


    @Override
    public void render(SpriteBatch sb) {
        shopCam.update();
        sb.setProjectionMatrix(shopCam.combined);
        sb.begin();
        sb.draw(bg, 0 , 0, shopCam.viewportWidth, shopCam.viewportHeight);
        shopLayout.draw(sb);
        sb.end();

    }

    @Override
    public void dispose() {
        bg.dispose();
        shopLayout.getTexture().dispose();

    }
}

我做错了什么？一切看起来都很好，但是当我单击“商店”按钮时，我得到的只是黑屏!

Answer 1

好的，找到了解决方案，但我不知道为什么会解决这个问题。我所要做的就是添加一个使用当前视口(viewport)的舞台。

stage = Stage(viewport);

就是这样!由于某种原因，它现在可以正常工作......