cocos2dx 3.1.1 在线热更新 自动更新（使用AssetsManager更新游戏资源包）

//Upgrade.cpp
#include "Upgrade.h"
#include "CCLuaEngine.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", "Arail", 20), 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;


    auto engine = LuaEngine::getInstance();
    ScriptEngineManager::getInstance()->setScriptEngine(engine);
    if (engine->executeScriptFile("src/main.lua")) {  
        return ;
    }

}
        
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(8);
    }
    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();
        
}

    auto engine = LuaEngine::getInstance();
    ScriptEngineManager::getInstance()->setScriptEngine(engine);
    if (engine->executeScriptFile("src/main.lua")) {  
        return ;
    }

#include "AppDelegate.h"
#include "CCLuaEngine.h"
#include "SimpleAudioEngine.h"
#include "cocos2d.h"
#include "Upgrade.h"

using namespace CocosDenshion;

USING_NS_CC;
using namespace std;

AppDelegate::AppDelegate()
{
}

AppDelegate::~AppDelegate()
{
    SimpleAudioEngine::end();
}

bool AppDelegate::applicationDidFinishLaunching()
{
    // initialize director
    auto director = Director::getInstance();
	auto glview = director->getOpenGLView();
	if(!glview) {
		glview = GLView::createWithRect("dragan", Rect(0,0,900,640));
		director->setOpenGLView(glview);
	}

    glview->setDesignResolutionSize(480, 320, ResolutionPolicy::NO_BORDER);

    // turn on display FPS
    director->setDisplayStats(true);

    // set FPS. the default value is 1.0/60 if you don't call this
    director->setAnimationInterval(1.0 / 60);


    //auto engine = LuaEngine::getInstance();
    //ScriptEngineManager::getInstance()->setScriptEngine(engine);
    //if (engine->executeScriptFile("src/main.lua")) {  
    //    return false;
    //}

    auto scene = Scene::create();
    auto layer =  Upgrade::create();
    Director::getInstance()->runWithScene(scene);
    scene->addChild(layer);

    return true;
}

// This function will be called when the app is inactive. When comes a phone call,it's be invoked too
void AppDelegate::applicationDidEnterBackground()
{
    Director::getInstance()->stopAnimation();

    SimpleAudioEngine::getInstance()->pauseBackgroundMusic();
}

// this function will be called when the app is active again
void AppDelegate::applicationWillEnterForeground()
{
    Director::getInstance()->startAnimation();

    SimpleAudioEngine::getInstance()->resumeBackgroundMusic();
}