对象池在Cocos2D-X v3.0最终 - 不推荐使用CCArray [英] Object Pools in Cocos2D-X v3.0 Final - Deprecated CCArray

问题描述

在使用cocos2d-X搜索真随机性时，不需要过多的条件;感兴趣的算法利用2个CCArray在两个不同的对象池上分配和组合函数。

In the search for true randomness using cocos2d-X, without the need of excessive conditionals; the algorithm of interest utilizes 2 CCArray(s) to allocate and combine functions on two different object pools.

我们为一个对象'皮革'和'皮革选择'。我们使用名为SaddleManifold的自定义类覆盖CCSprite

We Create a 'pool' for an object 'leather' and 'leatherSelection'. We Overwrite CCSprite with a custom class named 'SaddleManifold'

/ **

Cocos2D-x定义了一个皮革类型的数组。

On the header, using deprecated Cocos2D-x define an array of 'leather' types.

CCArray * _leather;
CCArray * _leatherSelection;

使用CCArray显然不适用于新的cocos2D-x库。我正在寻找方法重写我的代码使用新的cocos2D-X V3库，其中引入向量。

The use of CCArray is obviously unfit for the new cocos2D-x library. I am looking for ways to re-write my code using the new cocos2D-X V3 library which introduces vectors.

/** Destroyer **/
SaddleManifold::~SaddleManifold() { }

/**implementation class **/

_leather = CCArray::createWithCapacity(5);
_leather->retain();

 //Attempt to overload

_leatherSelection = CCArray::createWithCapacity(4);
_leatherSelection->retain();

  /** I get thrown an 'out-of-line' definition when building this signature **/
  void SaddleManifold::initSaddleManifold(Saddle * saddle) {

    .....}

现在，如果我尝试这样：

Now if I try this:

/* Saddle is a Sprite! */

  Saddle * saddle;

  /*set boundaries*/
    while (currentSaddletWidth < _minSaddleManifoldWidth) {

例如：马鞍从一系列皮革类型中随机选择;宽度参数。下面是有问题代码的摘录：

For example: The saddle chooses randomly from an array of leather types; width parameters are embedded. Here's an excerpt of the code in question:

   saddle = (Saddle *) _leatherArray->objectAtIndex(_leatherArrayIndex);
    _leatherArrayIndex+;

    /**this does not run since it relies on that deprecated count()**/

    if (_leatherArrayIndex == _leatherArray> count()) {
        _leatherArrayIndex =0;
    }

    this->initSaddleManifold(saddle);

  /** width assignment differential **/
    currentSaddleWidth += saddle->getWidth();

    _leatherSelection->addObject(obstacle);

这是从CCArray转换到新选择的最佳方式？运行时与使用CCArray有何不同？

Which would be the best way to transition from CCArray to the new alternative? Is run-time any different than using CCArray?

推荐答案

Cocos2d-x附带一个新的Vector类，替换现在已弃用的CCArray。主要区别（与您的代码相关）是：

Cocos2d-x comes with a new Vector class that replaces the now deprecated CCArray. Major differences (in relation with your code) are:

1）Vector用作静态对象。您不需要声明指向它的指针：

1) Vector is used as a static object. You don't need to declare a pointer to it :

class SpritesPool { 
   ....
   protected:
       cocos2d::Vector<cocos2d::Sprite*> _leather;
       cocos2d::Vector<cocos2d::Sprite*> _leatherSelection;
};

SpritesPool::SpritesPool() : _leather(5), _leatherSelection(4) {}

2）Vector是类似的（并基于）正常的std :: vector，那么你有所有知名的向量函数：

2) Vector is similar (and based on) a normal std::vector then you have all the well known vector functions:

saddle = (Saddle *) _leatherArray.at(_leatherArrayIndex); 
....
if (_leatherArrayIndex == _leatherArray.size()) {
    _leatherArrayIndex =0;
}
...
_leatherSelection.pushBack(obstacle);

您还有一个从向量中选择随机对象的方法

You have also a method for pick a random object from the vector

saddle = (Saddle *) _leatherArray.getRandomObject(); 

这可能有助于您的实施。

that maybe can help you with your implementation.

这篇关于对象池在Cocos2D-X v3.0最终 - 不推荐使用CCArray的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！