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我的要求:

  1. 背景填充整个物理屏幕(如果需要可拉伸)
  2. 保留前景资产的纵横比(使用虚拟宽度和高度)

为此,我在屏幕中使用了两个阶段,如下面的代码所示。

public void render(float delta) {
    backgroundStage.act(delta);
    backgroundStage.draw();
    foregroundStage.act(delta);
    foregroundStage.draw();
    }

public void resize(int width, int height) {
    background.setWidth(width);
    background.setHeight(height);
    backgroundStage.setViewport(width, height, true);
    foregroundStage.setViewport(MainGame.WIDTH, MainGame.HEIGHT, true);
    foregroundStage.getCamera().position.set(-foregroundStage.getGutterWidth(),-foregroundStage.getGutterHeight(),0);
    }

在我阅读的所有教程中,我只看到每个屏幕使用一个阶段。那么,我如何在一个阶段同时满足这两个要求呢?有单独的阶段是否太昂贵?(我读过 SpriteBatch 对象很重!)

这就是我解决问题的方法:

为了摆脱背景阶段,我更新了我的渲染和调整大小功能,如下所示。基本上,我将背景的右下角移动到 (-gutterWidth,-gutterHeight) 并将 gutter 宽度和高度值的两倍添加到纹理区域的区域宽度和高度。现在舞台已经过去了:-)

public void render(float delta) {
    Gdx.gl.glClearColor(0, 1, 0, 0.5f);
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
    foregroundStage.getSpriteBatch().begin();
    foregroundStage.getSpriteBatch().draw(backgroundImage,-gw,-gh,backgroundImage.getRegionWidth()+2*gw,backgroundImage.getRegionHeight()+2*gh);
    foregroundStage.getSpriteBatch().end();
    foregroundStage.act(delta);
    foregroundStage.draw();


public void resize(int width, int height) {
    screenW = width;
    screenH = height;
    foregroundStage.setViewport(MainGame.WIDTH, MainGame.HEIGHT, true);
    gw = foregroundStage.getGutterWidth();
    gh = foregroundStage.getGutterHeight();
    foregroundStage.getCamera().translate(-gw,-gh,0);
    }
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1 回答 1

1

您可以使用两个阶段,但对于您的情况,最好通过在一个阶段内创建两个组来解决此问题:

Stage stage = new Stage();

Group background = new Group();
background.setBounds(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
Group foreground = new Group();
foreground.setBounds(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());

// Notice the order
stage.addActor(background);
stage.addActor(foreground);

foreground.addActor(new Actor());
// Or anything else you want to add like you normally would to the stage. 

background.addActor(new Image()); // your background image here.

Gdx.input.setInputProcessor(stage);
于 2013-08-13T07:40:58.937 回答