cocos2d-x适配多分辨率

现在用的2d-x版本是2.1.1。现在的项目要求是iphone ，iphone Retina，ipad和ipad Retina都有各自的路径来存放各自需要的资源。在AppDelegate的

applicationDidFinishLaunching()函数中根据屏幕分辨率来设置

static Resource iPhoneResource  =  {CCSizeMake(480,320),  "iPhone" };

static Resource iPhoneHDResource   =  {CCSizeMake(480*2,320*2),   "iPhoneHD" };

static Resource iPhoneTallerResource = {CCSizeMake(1136,640),   "iPhoneTaller"};

static Resource iPadResource =  {CCSizeMake(1024,768), "iPad"   };

static Resource iPadHDResource  =  {CCSizeMake(2048,1536),"iPadHD" };

static CCSize designResolutionSize =CCSizeMake(480,320);

static CCSize designTallerResolutionSize =CCSizeMake(568,320);

static CCSize designIpadResolutionSize =CCSizeMake(512,384);

bool AppDelegate::applicationDidFinishLaunching()

{

    // initialize director

    CCDirector *pDirector = CCDirector::sharedDirector();

    

    CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();

    

    pDirector->setOpenGLView(pEGLView);

    

    std::vector<std::string> searchPath =CCFileUtils::sharedFileUtils()->getSearchPaths();

    

    // Set the design resolution

    pEGLView->setDesignResolutionSize(designResolutionSize.width,designResolutionSize.height,kResolutionNoBorder);

    CCSize designSize =designResolutionSize;

    

    CCSize frameSize = pEGLView->getFrameSize();

    _isLongiPhone =false;

    _isIpadHD = false;

    _isIpadNormal =false;

    

    // In this demo, we select resource according to the frame's height.

    // If the resource size is different from design resolution size, you need to set contentScaleFactor.

    // We use the ratio of resource's height to the height of design resolution,

    // this can make sure that the resource's height could fit for the height of design resolution.

    // if the frame's height is larger than the height of medium resource size, select large resource.

    if (frameSize.height ==iPadHDResource.size.height && frameSize.width ==iPadHDResource.size.width)

    {

//iPhoneHDResource.directory是共用路径，这个路径下有共用资源。

        searchPath.push_back(iPadHDResource.directory);

        searchPath.push_back(iPhoneHDResource.directory);

        //设计屏幕大小是512x384

        designSize = designIpadResolutionSize;

        pEGLView->setDesignResolutionSize(designSize.width, designSize.height,kResolutionNoBorder);

        //实际屏幕大小是2048x1536，所以设置ContentScaleFactor为4.

        pDirector->setContentScaleFactor(iPadHDResource.size.height/designIpadResolutionSize.height);

        

        _isIpadHD = true;

    }

    // if the frame's height is larger than the height of small resource size, select medium resource.

    elseif (frameSize.height ==iPadResource.size.height && frameSize.width ==iPadResource.size.width)

    {

        searchPath.push_back(iPadResource.directory);

        searchPath.push_back(iPhoneHDResource.directory);

        

        designSize = designIpadResolutionSize;

        pEGLView->setDesignResolutionSize(designSize.width, designSize.height,kResolutionNoBorder);

        

        pDirector->setContentScaleFactor(iPadResource.size.height/designIpadResolutionSize.height);

        _isIpadNormal =true;

    }

    // if the frame's height is smaller than the height of medium resource size, select small resource.

    elseif (frameSize.height ==iPhoneResource.size.height && frameSize.width ==iPhoneResource.size.width)

    {

        searchPath.push_back(iPhoneResource.directory);

        

        searchPath.push_back(iPhoneHDResource.directory);

        

        pDirector->setContentScaleFactor(iPhoneResource.size.height/designResolutionSize.height);

    }

    elseif (frameSize.height ==iPhoneHDResource.size.height && frameSize.width ==iPhoneHDResource.size.width){

        searchPath.push_back(iPhoneHDResource.directory);

        pDirector->setContentScaleFactor(iPhoneHDResource.size.height/designResolutionSize.height);

        designSize = designResolutionSize;

        pEGLView->setDesignResolutionSize(designSize.width, designSize.height,kResolutionNoBorder);

    }

    elseif (frameSize.height ==iPhoneTallerResource.size.height && frameSize.width ==iPhoneTallerResource.size.width){

        //push taller resources" directory first,so look for resources in  taller resources" directory first

        searchPath.push_back(iPhoneTallerResource.directory);

        searchPath.push_back(iPhoneHDResource.directory);

        

        designSize = designTallerResolutionSize;

        pEGLView->setDesignResolutionSize(designSize.width, designSize.height,kResolutionNoBorder);

        pDirector->setContentScaleFactor(iPhoneTallerResource.size.height/designResolutionSize.height);

        _isLongiPhone =true;

    }

    

CCFileUtils::sharedFileUtils()->setSearchPaths(searchPath);

}

这样设置路径之后，进入游戏时会在SearchPaths里寻找所需要的资源。需要注意的是各个路径下的资源文件名相同就行了，不用根据是否未Retina而添加－HD后缀。