Question

所以我最近开始在Java中修改LibGDX（目前仅限桌面）。我对其他语言的其他类型的OGL库（即C ++中的SFML）有着丰富的经验，并且对Java语言本身很有经验，所以我非常自信地处理了LibGDX;虽然结果大多是积极的，但我还是无法弄明白。

我想要实现的目标很简单：绘制地图（ Tiled .tmx ），绘制精灵（即将成为＆＃34;播放器＆＃34） ;）介于第1层和第2层之间，并使用scene2D 阶段在所有窗口之上渲染几个GUI窗口小部件。我已成功地实现了这一目标。

这是我的游戏课程，只是为了尝试这么多切换，它非常混乱，但它很清楚它尝试做什么：

public class Game extends ApplicationAdapter 
{
    private SpriteBatch batch;
    private Texture img;
    private Sprite playerSprite;
    private TiledMap tiledMap;
    private OrthographicCamera camera;
    private OrthogonalTiledMapRenderer tiledMapRenderer;

    private Stage stage;

    @Override
    public void create () {
        batch = new SpriteBatch();
        img = new Texture("trchar000.png");
        playerSprite = new Sprite(img, 0, 0, 32, 48);

        playerSprite.setPosition(32, 192);

        InputHandler.init();
        Gdx.input.setInputProcessor(new InputHandler());

        stage = new TestStage(playerSprite);

        // inputs
        InputMultiplexer im = new InputMultiplexer(stage, new InputHandler());
        Gdx.input.setInputProcessor(im);

        // tiles
        camera = new OrthographicCamera();
        camera.setToOrtho(false, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        camera.update();
        tiledMap = new TmxMapLoader().load("map2.tmx");
        tiledMapRenderer = new OrthogonalTiledMapRenderer(tiledMap);
    }

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

        camera.update();
        tiledMapRenderer.setView(camera);

        int[] groundLayers = {0};
        int[] topLayers = {1};

        // render layer1 -> player -> layer 2
        // the .tmx map doesn't have any other layers (just those 2)
        tiledMapRenderer.render(groundLayers);

        // removing these 3 lines solves the issue, but doesn't render the player
        // I've also tried using my regular SpriteBatch instance; same results
        // Also, I tried creating a class that extends OrthogonalTiledMapRenderer and overriding the render() method, so that it would draw the player inbetween layers, but again, same results.
        tiledMapRenderer.getBatch().begin();
        tiledMapRenderer.getBatch().draw(playerSprite, playerSprite.getX(), playerSprite.getY());
        tiledMapRenderer.getBatch().end();

        tiledMapRenderer.render(topLayers);

        batch.begin();

        // just to try, I'm rendering the stage here (not calling it's draw() method). Removing this for loop solves the issue, but doesn't render the GUI
        for(Actor a : stage.getActors())
            a.draw(batch, 1);

        batch.end();
    }

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

另外，这是 TestStage 类：

public class TestStage extends Stage {

    private Skin skin;
    private BitmapFont newDefaultFont;

    public TestStage(Sprite player)
    {
        super(new ScreenViewport());

        // skin
        FreeTypeFontGenerator freeTypeFontGenerator = new FreeTypeFontGenerator(Gdx.files.internal("segoeui.ttf"));
        FreeTypeFontGenerator.FreeTypeFontParameter parameter = new FreeTypeFontGenerator.FreeTypeFontParameter();
        parameter.size = 14;
        newDefaultFont = freeTypeFontGenerator.generateFont(parameter);

        skin = new Skin();
        skin.add("default-font", newDefaultFont, BitmapFont.class);
        FileHandle fileHandle = Gdx.files.internal("uiskin.json");
        FileHandle atlasFile = fileHandle.sibling("uiskin.atlas");

        if (atlasFile.exists()) {
            skin.addRegions(new TextureAtlas(atlasFile));
        }

        skin.load(fileHandle);

        final TextButton button = new TextButton("This is a Button", skin, "default");
        button.setPosition(250, 250);
        button.setWidth(150);
        button.setHeight(40);

        final Label lbl = new Label("Test", skin);

        this.addActor(lbl);
        this.addActor(button);
    }

}

现在在这里达成协议;如果尝试渲染所有内容（如我的Game类＆＃39; render（）方法中所示），这就是它的样子：

Image 1

播放器，GUI和第2层都正确呈现，但第1层全部被淘汰，我无法弄清楚原因。

现在，在这里看看如果不渲染播放器，删除线条 tiledMapRenderer.getBatch().draw(playerSprite, playerSprite.getX(), playerSprite.getY());

Image 2

一切都很好。另外，如果我决定不渲染舞台演员，评论这个循环，这就是它的样子：

for(Actor a : stage.getActors())
    a.draw(batch, 1);

Image 3

同样，一切都很好。

我项目中唯一的其他类是默认的DesktopLauncher类，以及一个我确定与此无关的InputProcessor。这是我的第一个问题;我无法解决这个问题。提前谢谢。

LibGDX Tiled（TMX）Maps + Scene2D，渲染

0 个答案: