Method Update

Source/Engine/Networking/NetworkReplicationHierarchy.cpp:108–170

}

void NetworkReplicationNode::Update(NetworkReplicationHierarchyUpdateResult* result)
{
    CHECK(result);
    const float networkFPS = NetworkManager::NetworkFPS / result->ReplicationScale;
    for (NetworkReplicationHierarchyObject& obj : Objects)
    {
        if (obj.ReplicationFPS < -ZeroTolerance) // < 0
        {
            if (obj.ReplicationUpdatesLeft)
            {
                // Marked as dirty to sync manually
                obj.ReplicationUpdatesLeft = 0;
                result->AddObject(obj.Object);
            }
            continue;
        }
        else if (obj.ReplicationFPS < ZeroTolerance) // == 0
        {
            // Always relevant
            result->AddObject(obj.Object);
        }
        else if (obj.ReplicationUpdatesLeft > 0)
        {
            // Move to the next frame
            obj.ReplicationUpdatesLeft--;
        }
        else
        {
            NetworkClientsMask targetClients = result->GetClientsMask();
            if (result->_clientsHaveLocation && obj.CullDistance > 0.0f)
            {
                // Cull object against viewers locations
                if (const Actor* actor = obj.GetActor())
                {
                    const Vector3 objPosition = actor->GetPosition();
                    const Real cullDistanceSq = Math::Square(obj.CullDistance);
                    for (int32 clientIndex = 0; clientIndex < result->_clients.Count(); clientIndex++)
                    {
                        const auto& client = result->_clients[clientIndex];
                        if (client.HasLocation)
                        {
                            const Real distanceSq = Vector3::DistanceSquared(objPosition, client.Location);
                            // TODO: scale down replication FPS when object is far away from all clients (eg. by 10-50%)
                            if (distanceSq >= cullDistanceSq)
                            {
                                // Object is too far from this viewer so don't send data to him
                                targetClients.UnsetBit(clientIndex);
                            }
                        }
                    }
                }
            }
            if (targetClients && obj.Object)
            {
                // Replicate this frame
                result->AddObject(obj.Object, targetClients);
            }