Cocos2d-x 一些常見宏的作用

常見宏

   1）NS_CC_BEGIN cocos2d命名空間開始

   2） NS_CC_END  cocos2d命名空間結束

   3）USING_NS_CC 聲明cocos2d命名空間

   4）CC_SYNTHESIZE_READONLY(varType, varName, funName)聲明一個成員變數以及getfunName函數，沒有set函數。getfunName已經實現，其實現就是返回這個值。

/** CC_SYNTHESIZE_READONLY is used to declare a protected variable. We can use getter to read the variable. @param varType : the type of variable. @param varName : variable name. @param funName : "get + funName" is the name of the getter. @warning : The getter is a public inline function. The variables and methods declared after CC_SYNTHESIZE_READONLY are all public. If you need protected or private, please declare. */#define CC_SYNTHESIZE_READONLY(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void) const { return varName; }#define CC_SYNTHESIZE_READONLY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void) const { return varName; }

 

   5）CC_SYNTHESIZE_READONLY_PASS_BY_REF(varType, varName, funName) 類似CC_SYNTHESIZE_READONLY，不過getfunName返回的是引用。

#define CC_SYNTHESIZE_READONLY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void) const { return varName; }

   6）CC_SYNTHESIZE(varType, varName, funName) 聲明一個成員變數以及getfunName，setfunName函數.函式宣告和實現都有。

/** CC_SYNTHESIZE 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. @param varName : variable name. @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  inline functions. The variables and methods declared after CC_SYNTHESIZE are all public. If you need protected or private, please declare. */#define CC_SYNTHESIZE(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void) const { return varName; }\public: virtual void set##funName(varType var){ varName = var; }

   7）CC_SYNTHESIZE_PASS_BY_REF(varType, varName, funName) 類似CC_SYNTHESIZE，不過getfunName返回的是引用。

 

#define CC_SYNTHESIZE_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void) const { return varName; }\public: virtual void set##funName(const varType& var){ varName = var; }

   8）CC_PROPERTY_READONLY(varType, varName, funName) 聲明一個成員變數以及getfunName函數，沒有set函數。getfunName函數的實現要自己實現。

/** CC_PROPERTY_READONLY is used to declare a protected variable. We can use getter to read the variable. @param varType : the type of variable. @param varName : variable name. @param funName : "get + funName" is the name of the getter. @warning : The getter is a public virtual function, you should rewrite it first. The variables and methods declared after CC_PROPERTY_READONLY are all public. If you need protected or private, please declare. */#define CC_PROPERTY_READONLY(varType, varName, funName)\protected: varType varName;\public: virtual varType get##funName(void);

   9）CC_PROPERTY_READONLY_PASS_BY_REF(varType, varName, funName) 類似CC_PROPERTY_READONLY，不過getfunName返回的是引用。getfunName函數的實現要自己實現。

#define CC_PROPERTY_READONLY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void);

   10）CC_PROPERTY(varType, varName, funName) 聲明一個成員變數以及getfunName，setfunName函數.函數實現要自己實現。

/** 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. @param varName : variable name. @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);

  11）CC_PROPERTY_PASS_BY_REF(varType, varName, funName) 類似CC_PROPERTY，，不過getfunName返回的是引用

#define CC_PROPERTY_PASS_BY_REF(varType, varName, funName)\protected: varType varName;\public: virtual const varType& get##funName(void);\public: virtual void set##funName(const varType& var);