java - GenericPool逻辑问题(AndEngine)

Question

我创建这个池是为了回收和重用我添加到场景中的 Sprite

正如您将在我的代码中看到的，我创建了自己的获取方法，该方法随机化选择出现在场景中的 Sprite ，并随机化其 x 位置。问题是，它似乎出于某种原因选择了相同的位置，它在整个场景中出于某种原因选择了中间、左边和右边，当它应该随机化位置时，每次我重新启动场景时它都会随机选择3 个 Sprite 有 3 个位置，并且在整个场景中保持不变， Sprite 也不是随机的。这是我正在使用的内容

private  ITextureRegion texture1;
private  ITextureRegion texture2;
private ITextureRegion texture3;
private  ITextureRegion texture4;
private  ITextureRegion texture5;

private Scene mScene;
private Context mContext;
private Camera mCamera;
private LinkedList<Sprite>pool1;
// ===========================================================          
// Constructors          
// =========================================================== 
public FruitPool(final ITextureRegion pFruitTextureRegion,
        ITextureRegion pFruitTextureRegion2,ITextureRegion pFruitTextureRegion3, ITextureRegion pFruitTextureRegion4, ITextureRegion pFruitTextureRegion5,Scene mScene2, Camera camera, LinkedList<Sprite>items) {

    this.texture1 = pFruitTextureRegion;
    this.texture2 =pFruitTextureRegion2;
    this.texture3 = pFruitTextureRegion3;
    this.texture4 = pFruitTextureRegion4;
    this.texture5 = pFruitTextureRegion5;
    this.mScene = mScene2;
    this.pool1 = items;

    this.mCamera = camera;

}
// ===========================================================          
// Getter & Setter          
// =========================================================== 

// ===========================================================          
// Methods for/from SuperClass/Interfaces          
// ===========================================================  
@Override
protected Sprite onAllocatePoolItem() {

     Random rand = new Random();
     Random randFruit = new Random();
     Sprite fruit = null;
      float x = rand.nextInt((int) mCamera.getWidth() - texture3.getHeight());

     int textureNumber = randFruit.nextInt(5)+1;

     switch(textureNumber){
     case 1:
          fruit = new Sprite(x, 0, this.texture1);
          break;
     case 2:
         fruit = new Sprite(x, 0, this.texture2);
         break;
     case 3:
         fruit = new Sprite(x, 0, this.texture3);
         break;
     case 4:
         fruit = new Sprite(x, 0, this.texture4);
         break;
     case 5:
         fruit = new Sprite(x, 0, this.texture5);
         break;

     }


    mScene.attachChild(fruit);

    return fruit;

}
@Override
protected void onHandleObtainItem(final Sprite pItem) {
    pItem.reset();
}
@Override
protected void onHandleRecycleItem(final Sprite pItem) {
    pItem.setVisible(false);
    pItem.setIgnoreUpdate(true);

}


// ===========================================================          
// Methods          
// ===========================================================  

// ===========================================================          
// Inner and Anonymous Classes          
// ===========================================================  
}

我可以做或改变什么来使这个逻辑更好？

编辑:

这是我到目前为止所想出的办法，现在我陷入困境，如何将一个项目拉出来，然后回收它以重新使用

公共(public)类 Sprite 扩展了 TObjectPool{

private CustomArrayList<Sprite>  sprites;

private  ITextureRegion texture1;
private  ITextureRegion texture2;
private ITextureRegion texture3;
private  ITextureRegion texture4;
private  ITextureRegion texture5;


public sprites(int poolsize) {
    super(poolsize);

    sprites = new CustomArrayList<Sprite>(poolsize);

    // TODO Auto-generated constructor stub
}

public void FruitPool(final ITextureRegion watermelonRegion,
        ITextureRegion cherryRegion,ITextureRegion mBallTextureRegion, ITextureRegion grapeTextureRegion, ITextureRegion strawberryTextureRegion) {

    texture1 = watermelonRegion;
    texture2 = cherryRegion;
    texture3 = mBallTextureRegion;
    texture4 = grapeTextureRegion;
    texture5 = strawberryTextureRegion;






     }




@Override
public void fillPool() {
     Sprite fruit1 = new Sprite(0, 0, this.texture1);
     sprites.add(fruit1);

     Sprite fruit2 = new Sprite(0, 0, this.texture2);
     sprites.add(fruit2);


    Sprite  fruit3 = new Sprite(0, 0, this.texture3);
    sprites.add(fruit3);


    Sprite  fruit4 = new Sprite(0, 0, this.texture4);
    sprites.add(fruit4);


     Sprite fruit5 = new Sprite(0, 0, this.texture5);
     sprites.add(fruit5);



      super.getAvailable().add(fruit1);
      super.getAvailable().add(fruit2);
      super.getAvailable().add(fruit3);
      super.getAvailable().add(fruit4);
      super.getAvailable().add(fruit5);



}

}

我像这样拉出一个项目..

  sprites spritesClass = sprites(5);
  Sprite item = spritesClass.allocate();

如何回收元素？我这样做对吗？

Answer 1

onAllocatePoolItem() 在您的游戏中是否被频繁调用？如果是这样，那么它本身就不是一个对象池。事实上，在当前情况下，每次调用该方法时都会创建新对象。

I'll just point to an open source project by me 不是试图帮助您解决“问题”，而是，它向您展示了如何为您的游戏正确设置和使用对象池。该项目包括随机化功能。评论是瑞典语的，但无论如何你应该能够弄清楚那部分。