Question

我正在学习libGDX，只是为了好玩，并且很早就开始了。我的演员似乎没有接收触摸/鼠标输入。我已经广泛搜索并检查了所有常见错误（设置输入过程，设置边界，设置可触摸）但仍然没有运气。有人可以帮助我。

阶段

/* GameStage.java */
public class GameStage extends Stage{

    private Game gameInstance;

    public GameStage(Game gameInstance) {
        super(new ScreenViewport());
        Gdx.input.setInputProcessor(this);

        Tile tile = new Tile(2);
        addActor(tile);    
    }
}

演员

/* Tile.java */
public class Tile extends Actor{

    public enum Side{
        FRONT,
        BACK
    }
    private int value;
    private Texture backTexture;
    private Texture frontTexture;
    private Side currentSide;

    public Tile(int value) {
        this.value = value;
        backTexture = new Texture("TileBack.png");
        frontTexture = new Texture("Tile " + String.valueOf(value)+".png");
        currentSide = Side.BACK;

        setPosition(0, 0);
        setSize(128, 128);
        setBounds(getX(), getY(), getWidth(), getHeight());
        setTouchable(Touchable.enabled);

        addListener(new InputListener(){
            @Override
            public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
                System.out.println("Touch");
                super.touchUp(event, x, y, pointer, button);
            }
        });
    }

    @Override
    public void draw(Batch batch, float parentAlpha) {
        Color color = getColor();
        batch.setColor(color.r, color.g, color.b, color.a * parentAlpha);
        if(currentSide == Side.BACK){
            batch.draw(backTexture, getX(), getY(), getWidth(), getHeight());
        }
        else{
            batch.draw(frontTexture, getX(), getY(), getWidth(), getHeight());
        }

    }

    public int getValue() {
        return value;
    }
}

我错过了什么？我也尝试在舞台上实现touchUp并返回false和true但没有运气。

提前致谢！

Answer 1

仅当touchUp返回touchDown（默认为true）时才会调用

false事件。您可以通过执行以下操作来修复代码：

    addListener(new InputListener(){
        @Override
        public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
            System.out.println("Touch");
            super.touchUp(event, x, y, pointer, button);
        }

        // Add this:
        @Override
        public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
            System.out.println("down");
            return true;  // Important!
        }
    });

旁注：最好使用GDX logger代替System.out.println。

libGDX Actor没有接收输入

1 个答案: