cocos2dx 宏：CC_PROPERTY

勤奋努力，持之以恒！

cocos2d-x定义了很多宏定义，有助于我们提高开发效率
而CC_PROPERTY 用来声明一个protected变量。
使用CC_PROPERTY声明的变量可以使用getter获取变量的值，使用setter设置变量的值。

CC_PROPERTY的声明在CCPlatformMacros.h中，结构如下

/** CC_PROPERTY is used to declare a protected variable. We can use getter to read the variable, and use the setter to change the variable. @param varType : the type of variable.     变量类型 @param varName : variable name.            变量名称 @param funName : "get + funName" is the name of the getter. "set + funName" is the name of the setter. @warning : The getter and setter are public virtual functions, you should rewrite them first. The variables and methods declared after CC_PROPERTY are all public. If you need protected or private, please declare. */#define CC_PROPERTY(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void);\public: virtual void set##funName(varType var);

CC_PROPERTY使用方法：

.h

#ifndef __HELLOWORLD_SCENE_H__#define __HELLOWORLD_SCENE_H__#include "cocos2d.h"USING_NS_CC;using namespace std;class HelloWorld : public CCLayer{public:    virtual bool init();    static CCScene* scene();    CREATE_FUNC(HelloWorld);        CC_PROPERTY(unsigned int, _heroID, HeroID);    CC_PROPERTY(string, _heroName, HeroName);};#endif // __HELLOWORLD_SCENE_H__

.cpp

#include "HelloWorldScene.h"#include "SimpleAudioEngine.h"using namespace cocos2d;using namespace CocosDenshion;CCScene* HelloWorld::scene(){    CCScene *scene = CCScene::create();    HelloWorld *layer = HelloWorld::create();    scene->addChild(layer);    return scene;}// on "init" you need to initialize your instancebool HelloWorld::init(){    if ( !CCLayer::init() )    {        return false;    }        this->setHeroID(110120);    this->setHeroName("police doctor");        CCLog("HeroID == %d, HeroName == %s",this->getHeroID(),this->getHeroName().c_str());        return true;}//CC_PROPERTY(unsigned int, _heroID, HeroID);void HelloWorld::setHeroID(unsigned int var){    _heroID = var;}unsigned int HelloWorld::getHeroID(){    return _heroID;}//CC_PROPERTY(string, _heroName, HeroName);void HelloWorld::setHeroName(string var){    _heroName = var;}string HelloWorld::getHeroName(){    return _heroName;}