cocos3 封装一个ball

#pragma once
#include "cocos2d.h"

USING_NS_CC;

class Ball:public Sprite
{
public:
    virtual bool init();
    static Ball* create()
    {
        Ball *b=new Ball();
        b->init();
        b->autorelease();
        return b;
    }
};

#include "Ball.h"

bool Ball::init()
{
    if ( !Sprite::init() )
    {
        return false;
    }
    initWithFile("ball.png");
    return true;
}

#define CREATE_FUNC(__TYPE__) static __TYPE__* create() {     __TYPE__ *pRet = new __TYPE__();     if (pRet && pRet->init())     {         pRet->autorelease();         return pRet;     }     else     {         delete pRet;         pRet = NULL;         return NULL;     } }