Node::getChildByName()で"/"区切りで再帰的に検索し取得できるようにする

Node::getChildByName()で"/"区切りで再帰的に検索し取得する

CCNode.cpp

Node* Node::getChildByName(const std::string& name) const
{
  std::string str = name;
  auto pos = str.find("/");
  if( pos == 0 ){
    str = str.substr(1,std::string::npos);
    pos = str.find("/");
  }
  std::string a = str.substr(0,pos);
  std::string b;
  if( pos != std::string::npos ){
    b = str.substr(pos,std::string::npos);
  }

  std::hash<std::string> h;
  size_t hash = h(a);

  for (const auto& child : _children)
  {
    // Different strings may have the same hash code, but can use it to compare first for speed
    if(child->_hashOfName == hash && child->_name.compare(a) == 0){
      if( b.empty() || b == "/" ){
        return child;
      }
      else{
        return child->getChildByName(b);
      }
    }
  }
  return nullptr;
}