cocos2dx v3.x之CCAction變化

不知道官網有沒有v2.x 到v3.x的差異整理，反正我是沒看到，希望有人能整理一下，造福大家

今天在做移植的時候m_pTarget提示，未定義的標識符“m_pTarget”，去查了下源碼，

v2.x

protected:
    CCNode    *m_pOriginalTarget;
    /** The "target".
    The target will be set with the 'startWithTarget' method.
    When the 'stop' method is called, target will be set to nil.
    The target is 'assigned', it is not 'retained'.
    */
    CCNode    *m_pTarget;
    /** The action tag. An identifier of the action */
    int     m_nTag;

v3.x

Node    *_originalTarget;
    /** 
     * The "target".
     * The target will be set with the 'startWithTarget' method.
     * When the 'stop' method is called, target will be set to nil.
     * The target is 'assigned', it is not 'retained'.
     */
    Node    *_target;
    /** The action tag. An identifier of the action. */
    int     _tag;
    /** The action flag field. To categorize action into certain groups.*/
    unsigned int _flags;