TMXMapInfo * TMXMapInfo::createWithXML(const std::string& tmxString, const std::string& resourcePath)
{
    TMXMapInfo *ret = new (std::nothrow) TMXMapInfo();
    if (ret->initWithXML(tmxString, resourcePath))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}
TMXMapInfo * TMXMapInfo::create(const std::string& tmxFile)
{
    TMXMapInfo *ret = new (std::nothrow) TMXMapInfo();
    if (ret->initWithTMXFile(tmxFile))
    {
        ret->autorelease();
        return ret;
    }
    CC_SAFE_DELETE(ret);
    return nullptr;
}