cocos2d-x用rube box2d editor当关卡编辑器写游戏

std::string fullPath = CCFileUtils::sharedFileUtils()->fullPathFromRelativePath("images.json");
unsigned long size;
unsigned char *file = CCFileUtils::sharedFileUtils()->getFileData(fullPath.c_str(), "rt+", &size);
std::string str = "";
for (int i = 0; i < size; i++)
{
str += file[i];
}
std::string error;
b2dJson json;
world = json.readFromString(str, error)；

b2dJsonImage *image1_ = json.getImageByName("image1");

CCSprite *image1 = CCSprite::create("images/mcclory.png");
image1->setScale((image1_->scale * PTM_RATIO)/ image1->getTexture()->getPixelsHigh());

image1Body->SetUserData(image1);

this->addChild(image1, 0);