Cocos2d-x 3.2 自动更新 -- 使用AssetsManager更新游戏资源包

概述文章摘自：http://www.voidcn.com/article/p-aseyqndm-bcu.html Android和win32已经测试通过，理论上IOS也可以。 1、AssetsManagerDelegateProtocol AssetsManagerDelegateProtocol，用于与服务器校验版本号，更新下载资源包，并对成功、出错、下载进度等进行回调。 2、资源包名称 所下载资源

文章摘自：http://www.jb51.cc/article/p-aseyqndm-bcu.html

AndroID和win32已经测试通过，理论上IOS也可以。

1、AssetsManagerDelegateProtocol

AssetsManagerDelegateProtocol，用于与服务器校验版本号，更新下载资源包，并对成功、出错、下载进度等进行回调。

2、资源包名称

所下载资源包名称默认为：cocos2dx-update-temp-package.zip。

如果想要修改文件名，直接修改引擎下 extensions\assets-manager\AsetsManager.ccp中的TEMP_PACKAGE_file_name

3、服务器

下以是我的资源包路径和本版号。

http://shezzer.sinaapp.com/downloadTest/cocos2dx-update-temp-package.zip

http://shezzer.sinaapp.com/downloadTest/version.php

4、实现

//  Upgrade.h//<img src="http://img.blog.csdn.net/20140728093037654?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvTGlhbmdzaGFvemU=/Font/5a6L5L2T/Fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" alt="" />//  Created by Sharezer on 14-07-26.////#ifndef _UPGRADE_H_#define _UPGRADE_H_#include "cocos2d.h"#include "extensions/cocos-ext.h"class Upgrade : public cocos2d::cclayer,public cocos2d::extension::AssetsManagerDelegateProtocol{public:	Upgrade();	virtual ~Upgrade();	virtual bool init();	voID upgrade(cocos2d::Ref* pSender);	//检查版本更新	voID reset(cocos2d::Ref* pSender);		//重置版本	virtual voID onError(cocos2d::extension::AssetsManager::ErrorCode errorCode);		//错误信息	virtual voID onProgress(int percent);	//更新下载进度	virtual voID onSuccess();		//下载成功	CREATE_FUNC(Upgrade);private:	cocos2d::extension::AssetsManager* getAssetManager();	voID initDownloadDir();		//创建下载目录private:	std::string _pathToSave;	cocos2d::Label *_showDownloadInfo;};#endif

//Upgrade.cpp

    #include "Upgrade.h"      #include "HelloWorldScene.h"            #if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32)      #include <dirent.h>      #include <sys/stat.h>      #endif            USING_NS_CC;      USING_NS_CC_EXT;            #define DOWNLOAD_FIEL       "download"  //下载后保存的文件夹名            Upgrade::Upgrade():      _pathToSave(""),_showDownloadInfo(NulL)      {            }            Upgrade::~Upgrade()      {          AssetsManager* assetManager = getAssetManager();          CC_SAFE_DELETE(assetManager);      }            bool Upgrade::init()      {          if (!cclayer::init())          {              return false;          }          Size winSize = Director::getInstance()->getWinSize();          initDownloadDir();          _showDownloadInfo = Label::createWithSystemFont("","Arial",20);          this->addChild(_showDownloadInfo);          _showDownloadInfo->setposition(Vec2(winSize.wIDth / 2,winSize.height / 2 - 20));                      auto itemLabel1 = MenuItemLabel::create(              Label::createWithSystemFont("reset","arail",20),CC_CALLBACK_1(Upgrade::reset,this));          auto itemLabel2 = MenuItemLabel::create(              Label::createWithSystemFont("Upgrad",CC_CALLBACK_1(Upgrade::upgrade,this));                auto menu = Menu::create(itemLabel1,itemLabel2,NulL);          this->addChild(menu);                itemLabel1->setposition(Vec2(winSize.wIDth / 2,winSize.height / 2 + 20));          itemLabel2->setposition(Vec2(winSize.wIDth / 2,winSize.height / 2 ));                menu->setposition(Vec2::ZERO);                return true;      }            voID Upgrade::onError(AssetsManager::ErrorCode errorCode)      {          if (errorCode == AssetsManager::ErrorCode::NO_NEW_VERSION)          {              _showDownloadInfo->setString("no new version");          }          else if (errorCode == AssetsManager::ErrorCode::NETWORK)          {              _showDownloadInfo->setString("network error");          }          else if (errorCode == AssetsManager::ErrorCode::CREATE_file)          {              _showDownloadInfo->setString("create file error");          }      }            voID Upgrade::onProgress(int percent)      {          if (percent < 0)              return;          char progress[20];          snprintf(progress,20,"download %d%%",percent);          _showDownloadInfo->setString(progress);      }            voID Upgrade::onSuccess()      {          cclOG("download success");          _showDownloadInfo->setString("download success");          std::string path = fileUtils::getInstance()->getWritablePath() + DOWNLOAD_FIEL;          //fileUtils::getInstance()->addSearchPath(path,true);          auto scene = HelloWorld::scene();          Director::getInstance()->replaceScene(scene);      }            AssetsManager* Upgrade::getAssetManager()      {          static AssetsManager *assetManager = NulL;          if (!assetManager)          {              assetManager = new AssetsManager("http://shezzer.sinaapp.com/downloadTest/cocos2dx-update-temp-package.zip","http://shezzer.sinaapp.com/downloadTest/version.PHP",_pathToSave.c_str());              assetManager->setDelegate(this);              assetManager->setConnectionTimeout(3);          }          return assetManager;      }            voID Upgrade::initDownloadDir()      {          cclOG("initDownloadDir");          _pathToSave = CCfileUtils::getInstance()->getWritablePath();          _pathToSave += DOWNLOAD_FIEL;      cclOG("Path: %s",_pathToSave.c_str());      #if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32)          DIR *pDir = NulL;          pDir = opendir(_pathToSave.c_str());          if (!pDir)          {              mkdir(_pathToSave.c_str(),S_IRWXU | S_IRWXG | S_IRWXO);          }      #else          if ((GetfileAttributesA(_pathToSave.c_str())) == INVALID_file_ATTRIBUTES)          {              CreateDirectoryA(_pathToSave.c_str(),0);          }      #endif          cclOG("initDownloadDir end");      }            voID Upgrade::reset(Ref* pSender)      {          _showDownloadInfo->setString("");          // Remove downloaded files      #if (CC_TARGET_PLATFORM != CC_PLATFORM_WIN32)          string command = "rm -r ";          // Path may include space.          command += "\"" + _pathToSave + "\"";          system(command.c_str());      #else          std::string command = "rd /s /q ";          // Path may include space.          command += "\"" + _pathToSave + "\"";          system(command.c_str());      #endif          getAssetManager()->deleteVersion();          initDownloadDir();      }            voID Upgrade::upgrade(Ref* pSender)      {          _showDownloadInfo->setString("");          getAssetManager()->update();            }  

运行：

reset：重置版本号，办删除下载资源。

Upgrad：校验版本号，当有更新时下载新资源。

_pathToSave保存着文件的下载路径，压缩包下载下来后，将被自动解压到_pathToSave中。

以win32为，在cocos2d-x\build\DeBUG.win32\ 中，可以看到我们之前设置的下载目录download。

onSuccess中，当下载成功后，将跳转到HelloWorld。

这时可以在HelloWorld中直接使用已下载的资源。

具体实现代码见下载地址：点击打开链接

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