100匹のネコ (2)Texture Atlas

HelloWorldScene.cpp

#include "HelloWorldScene.h"
#include "SimpleAudioEngine.h"

using namespace cocos2d;
using namespace CocosDenshion;

CCScene* HelloWorld::scene()
{
    CCScene *scene = CCScene::create();
    HelloWorld *layer = HelloWorld::create();
    scene->addChild(layer);
    
    return scene;
}

bool HelloWorld::init()
{
    if ( !CCLayer::init() )
    {
        return false;
    }
    
    srand((unsigned)time(NULL));
    
    //usingSprite();
    usingSpriteFrameCache();
    
    return true;
}

void HelloWorld::usingSprite()
{
    CCSize winSize = CCDirector::sharedDirector()->getWinSize();
    
    start = clock();
    
    for (int i = 0; i < 100; i++) {
        int random = rand();
        
        // ふつうの表示
        CCString* fileName = CCString::createWithFormat("cat%02d.png", i);
        CCSprite* cat = CCSprite::create(fileName->getCString());
        cat->setPosition(ccp(random % (int)winSize.width,
                             random % (int)winSize.height));
        this->addChild(cat);
    }
    
    CCLog("%f", (double)(clock() - start) / CLOCKS_PER_SEC);
}

void HelloWorld::usingSpriteFrameCache()
{
    CCSize winSize = CCDirector::sharedDirector()->getWinSize();
    
    start = clock();
            
    // キャッシュへ読込み
    CCSpriteFrameCache* cache = CCSpriteFrameCache::sharedSpriteFrameCache();
    cache->addSpriteFramesWithFile("cats1.plist");
    cache->addSpriteFramesWithFile("cats2.plist");
    
    for (int i = 0; i < 100; i++) {
        int random = rand();
        
        // キャッシュから表示
        CCString* fileName = CCString::createWithFormat("cat%02d.png", i);
        CCSprite* cat = CCSprite::createWithSpriteFrameName(fileName->getCString());
        cat->setPosition(ccp(random % (int)winSize.width,
                             random % (int)winSize.height));
        this->addChild(cat);
    }
    
    CCLog("%f", (double)(clock() - start) / CLOCKS_PER_SEC);
}

HelloWorldScene.h

//#ifndef __HELLOWORLD_SCENE_H__
//#define __HELLOWORLD_SCENE_H__

#include "cocos2d.h"

class HelloWorld : public cocos2d::CCLayer
{
private:
    clock_t start;

    void usingSprite();
    void usingSpriteFrameCache();

public:
    virtual bool init();
    static cocos2d::CCScene* scene();
    CREATE_FUNC(HelloWorld);
};

//#endif // __HELLOWORLD_SCENE_H__