【cocos2d-x v3.1】cocos2dxでzipファイルを扱う場合のまとめ。load timeの計測もあるよ。 ref: http://qiita.com/kuuki_yomenaio/items/b93b236ed5563adf9c39

HelloWorld.cpp

unsigned char* buf = FileUtils::getInstance()->getFileDataFromZip(
                                                     path.c_str() , 
                                                     zipFile.c_str(), 
                                                     (ssize_t*)&size);

HelloWorldScene.cpp

// 片方ずつ行います。(コメントアウトで簡単に)
void exec(){
    // resourceから読み出す
    const auto resourceStartTime = std::chrono::system_clock::now();
    for(int i = 1 ; i < 101 ; i++){
        sprintf(str, "f%03d.png" , i);
        readFromResource(str);
    }
    const auto resourceEndTime = std::chrono::system_clock::now();
    const auto resourceExecTime = resourceEndTime - resourceStartTime;

    CCLOG("resourceExecTime : %lld ms" , std::chrono::duration_cast<std::chrono::milliseconds>(resourceExecTime).count());

    // zipから読み出す
    const auto zipStartTime = std::chrono::system_clock::now();
    for(int i = 1 ; i < 101 ; i++){
        sprintf(str, "f%03d.png" , i);
        readFromZip(str);
    }
    const auto zipEndTime = std::chrono::system_clock::now();
    const auto zipExecTime = zipEndTime - zipStartTime;

    CCLOG("zipExecTime : %lld ms" , std::chrono::duration_cast<std::chrono::milliseconds>(zipExecTime).count());
}

void HelloWorld::readFromResource(const char* _fileName){
    auto sprite = Sprite::create(_fileName);
    this->addChild(sprite);
}

void HelloWorld::readFromZip(const char* _fileName){

    std::string fileName = "img_100/";
    fileName = fileName + _fileName;
    // zip fileから指定した画像を読み出して表示
    unsigned long size = 0;
    unsigned char* buf = FileUtils::getInstance()->getFileDataFromZip(path.c_str() , fileName.c_str(), (ssize_t*)&size);

    auto img = new Image();
    img->initWithImageData(buf , size);

    auto texture = new Texture2D();
    texture->initWithImage(img);

    auto sprite = Sprite::createWithTexture(texture);

    this->addChild(sprite);
}

HelloWorldScene.h

#include "cocos2d.h"
#import "network/HttpClient.h"

USING_NS_CC;
using namespace cocos2d::network;

class HelloWorld : public cocos2d::Layer
{
public:
    // there's no 'id' in cpp, so we recommend returning the class instance pointer
    static cocos2d::Scene* createScene();

    // Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
    virtual bool init();  

    // a selector callback
    void menuCloseCallback(cocos2d::Ref* pSender);

    // implement the "static create()" method manually
    CREATE_FUNC(HelloWorld);

    void httpCallBackResponse(HttpClient* client , HttpResponse* response);
};