Question

LibGDX。试用基本形状。希望舞台上有演员来获得触摸输入。在分阶段添加到代码之前，它是否可以正常工作。我可以让演员画在屏幕上，但是之后，我不确定该怎么做。 addListener似乎不再起作用。

Box.java

public class Box extends Actor {
   private MyGdxGame game;
ShapeRenderer renderer;

   private Vector3 pos;
   private int width, height;
   private Rectangle rect;
   private Vector3 color;

   public Box(MyGdxGame game) {
      super();
      this.game = game;
renderer = new ShapeRenderer();
// arbitrary x/y values
      pos = new Vector3(300, 300, 0);
      width = 300;
      height = 200;
      rect = new Rectangle(pos.x, pos.y, width, height);
      color = new Vector3();
      changeColor();

      addListener(new ClickListener() {
         @Override
         public boolean touchDown(InputEvent event, float x, float y, int button, int pointer) {
            changeColor();
            return false;
         }
      });
   }

   private void changeColor() {
      Random rng = new Random();
      color.x = rng.nextInt(255) / 255f;
      color.y = rng.nextInt(255) / 255f;
      color.z = rng.nextInt(255) / 255f;
   }

   @Override
   public void draw(Batch batch, float parentAlpha) {
      super.draw(batch, parentAlpha);   
renderer.begin(ShapeRenderer.ShapeType.Filled);
      renderer.setColor(color.x, color.y, color.z, 1);
      renderer.rect(pos.x, pos.y, width, height);
      renderer.end();
   }

public void dispose() {
renderer.dispose();
}
}

MyGDXGame.java

public class MyGdxGame implements ApplicationListener {
   public OrthographicCamera camera;

   private Stage stage;

   @Override
   public void create() {
      camera = new OrthographicCamera();
      camera.setToOrtho(false, Gdx.graphics.getWidth(),  Gdx.graphics.getHeight());

      Box box = new Box(this);

      stage = new Stage();
      stage.addActor(box);

      Gdx.input.setInputProcessor(stage);
   }

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

      camera.update();

      stage.act();
      stage.draw();
   }

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

   @Override
   public void resize(int width, int height) {}

   @Override
   public void pause() {}

   @Override
   public void resume() {}
}

Edit2：

我删除了Box自己的位置和大小变量，但现在却抛出了各种错误。主要是IllegalStateExceptions和IllegalAccessErrors ...

致命异常：GLThread 16934 04-30 05：46：43.623 19181 19270 E AndroidRuntime进程：com.suchuu.box2dsquares，PID：19181 04-30 05：46：43.623 19181 19270 E AndroidRuntime java.lang.IllegalStateException： 04-30 05：46：43.623 19181 19270 E AndroidRuntime位于com.badlogic.gdx.graphics.glutils.ShapeRenderer.begin（ShapeRenderer.java:190） 04-30 05：46：43.623 19181 19270 E AndroidRuntime位于com.suchuu.box2dsquares.MyGdxGame.render（MyGdxGame.java:25） 04-30 05：46：43.623 19181 19270 E位于com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame（AndroidGraphics.java:414）的AndroidRuntime 04-30 05：46：43.623 19181 19270 E AndroidRuntime at android.opengl.GLSurfaceView $ GLThread.guardedRun（GLSurfaceView.java:1571） 04-30 05：46：43.623 19181 19270 E AndroidRuntime at android.opengl.GLSurfaceView $ GLThread.run（GLSurfaceView.java:1270）

Box.java

public class Box extends Actor {
   private MyGdxGame game;
   ShapeRenderer renderer;
   private Vector3 color;

   public Box(MyGdxGame game) {
      super();
      this.game = game;
      renderer = new ShapeRenderer();

      setPosition(300, 300);
      setBounds(300, 300, 600, 500);

      color = new Vector3();
      changeColor();

    this.setTouchable(Touchable.enabled);

      this.addListener(new ClickListener() {
         @Override
         public boolean touchDown(InputEvent event, float x, float y, int button, int pointer) {
            changeColor();
            event.handle();
            return false;
         }
      });
   }

   private void changeColor() {
    Random rng = new Random();
      color.x = rng.nextInt(255) / 255f;
      color.y = rng.nextInt(255) / 255f;
      color.z = rng.nextInt(255) / 255f;
   }

   @Override
   public void draw(Batch batch, float parentAlpha) {
      super.draw(batch, parentAlpha);

      renderer.begin();
    renderer.set(ShapeRenderer.ShapeType.Filled);
      renderer.setColor(color.x, color.y, color.z, 1);
      renderer.rect(getX(), getY(), getWidth(), getHeight());
      renderer.end();
   }

   public void dispose() {
      renderer.dispose();
   }
}

我真是个菜鸟。

Answer 1

更改

renderer.begin();
renderer.set(ShapeRenderer.ShapeType.Filled);

收件人

renderer.begin(ShapeRenderer.ShapeType.Filled);

（已解决）演员中的Libgdx处理输入

1 个答案: