template<class T> void ObjectUpdater::Visit(GridRefManager<T> &m) {
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end();
            ++iter) {
        if (iter->getSource()->IsInWorld())
            iter->getSource()->Update(i_timeDiff);
    }
}

void ObjectUpdater::Visit(GridRefManager<T>& m)
{
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end(); ++iter)
    {
        WorldObject::UpdateHelper helper(iter->getSource());
        helper.Update(i_timeDiff);
    }
}

void ObjectUpdater::Visit(GridRefManager<T> &m)
{
    T* obj;
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end(); )
    {
        obj = iter->GetSource();
        ++iter;
        if (obj->IsInWorld())
            obj->Update(i_timeDiff);
    }
}

void
ObjectGridUnloader::Visit(GridRefManager<T>& m)
{
    // remove all cross-reference before deleting
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end(); ++iter)
        iter->getSource()->CleanupsBeforeDelete();

    while (!m.isEmpty())
    {
        T* obj = m.getFirst()->getSource();
        // if option set then object already saved at this moment
        if (!sWorld.getConfig(CONFIG_BOOL_SAVE_RESPAWN_TIME_IMMEDIATELY))
            obj->SaveRespawnTime();
        ///- object must be out of world before delete
        obj->RemoveFromWorld();
        ///- object will get delinked from the manager when deleted
        delete obj;
    }
}

void ObjectGridCleaner::Visit(GridRefManager<T> &m)
{
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end(); ++iter)
        iter->GetSource()->CleanupsBeforeDelete();
}

void
ObjectGridCleaner::Visit(GridRefManager<T> &m)
{
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end(); ++iter)
        iter->getSource()->RemoveFromWorld();
}

void ObjectUpdater::Visit(GridRefManager<T>& m)
{
    for (typename GridRefManager<T>::iterator iter = m.begin(); iter != m.end(); ++iter)
        iter->getSource()->Update(i_timeDiff);
}