android - 精灵运动 - 限制在特定区域？

Question

我有一个使用路径修改器移动的动画精灵，我想限制该精灵不应该在特定的像素颜色上移动。所以我尝试使用获取像素和颜色，但我无法找到该颜色的颜色代码。谁能帮我在andengine 2.0中做到这一点？

  int width = src.getWidth();
      int height = src.getHeight();
      // create output bitmap
      Bitmap bmOut = Bitmap.createBitmap(width, height, src.getConfig());
      // color information
      int A, R, G, B;
      int pixel;
      int px;
      px = src.getPixel(CAMERA_WIDTH / 2, CAMERA_HEIGHT / 2);
      R = Color.red(px);
      G = Color.green(px);
      B = Color.blue(px);
      int colblck = Color.rgb(R, G, B);
      Log.e("Tag","Color code for center " + colblck);
      // scan through all pixels
      for (int x = 0; x < width; ++x) {
       for (int y = 0; y < height; ++y) {
        // get pixel color
        pixel = src.getPixel(x, y);

        // get color on each channel
        // A = Color.alpha(pixel);
        R = Color.red(pixel);
        G = Color.green(pixel);
        B = Color.blue(pixel);

        String cd = "" + 00 + 00 + 00;

        bmOut.setPixel(x, y, Color.rgb(255, 0, 0));