标签:style blog http io color os ar sp 文件
1.cocos游戏的出发点
在main函数中有一句: return CCApplication::sharedApplication()->run();
2.经过层层深入发现,真正的入口: bool AppDelegate::applicationDidFinishLaunching()
3.类继承关系图:
4.代码实现:
CCApplicationProtocol的头文件如下,.cpp文件为空
#pragma once class CCApplicationProtocol { public: /*定义了一个虚接口,用于游戏的真正入口*/ virtual bool applicationDidFinishLaunching() = 0; };
CCApplication.h
#pragma once #include "CCApplicationProtocol.h" #include <iostream> using namespace std; class CCApplication :public CCApplicationProtocol { public: CCApplication(); /*run方法*/ virtual int run(); /*返回静态指针*/ static CCApplication* sharedApplication(); protected: /*静态指针,用于实现单例*/ static CCApplication * sm_pSharedApplication; };
CCApplication.cpp
#include "CCApplication.h" /*cpp文件中初始化静态成员*/ CCApplication * CCApplication::sm_pSharedApplication = NULL; CCApplication::CCApplication() { /*将子类对象赋值给父类的静态指针*/ sm_pSharedApplication = this; } CCApplication* CCApplication::sharedApplication() { /*实现单例*/ if (sm_pSharedApplication != NULL) return sm_pSharedApplication; } int CCApplication::run() { /*调用父类的方法,实现游戏的启动*/ applicationDidFinishLaunching(); return 0; }
AppDelegate.h
#pragma once #include "CCApplication.h" class AppDelegate :private CCApplication { public: /*实现了继承来的祖父类方法*/ virtual bool applicationDidFinishLaunching(); };
AppDelegate.cpp
#include "AppDelegate.h" /*实现了继承来的祖父类方法*/ bool AppDelegate::applicationDidFinishLaunching() { /*do somethint to iniialize the game*/ cout << "game start" << endl; return true; }
测试代码:
#include "AppDelegate.h" int main() { AppDelegate app; CCApplication::sharedApplication()->run(); system("pause"); return 0; }
标签:style blog http io color os ar sp 文件
原文地址:http://www.cnblogs.com/ttss/p/4054378.html