/// <summary>
/// Checks for and processes any new entity snapshot updates coming in from the server.
/// </summary>
private void receiveServerUpdates()
{
IncomingMessage incomingMessage;
while ((incomingMessage = this.serverNetworkConnection.GetNextIncomingMessage()) != null)
{
// Get the oldest entity snapshot in the history that should be overwritten with the new incoming data, but only overwrite if the incoming data is actually newer
EntitySnapshot newEntitySnapshot = this.getOldestHistoryEntitySnapshot();
if (!ServerUpdateSerializer.DeserializeIfNewer(incomingMessage, this.entitySnapshotHistory, newEntitySnapshot, out int newLatestClientTickAcknowledgedByServer, out int newCommandingEntityID))
{
continue;
}
if (this.LatestServerTickReceived < 0)
{
// This must be our first update from the server, so sync our ticks with the server's ticks once we start getting data flow from the server
this.FrameTick = newEntitySnapshot.ServerFrameTick;
}
if (this.LatestServerTickReceived < newEntitySnapshot.ServerFrameTick)
{
// This snapshot is the most recent, up-to-date server update we've gotten so track it accordingly
this.LatestServerTickReceived = newEntitySnapshot.ServerFrameTick;
this.LatestFrameTickAcknowledgedByServer = newLatestClientTickAcknowledgedByServer;
this.CommandingEntityID = newCommandingEntityID;
}
}
}
/// <summary>
/// Serializes the given server update (entity snapshot and client-specific data) and immediately sends a packet, only writing data that has changed from a previous snapshot..
/// </summary>
public static void Send(INetworkConnection clientNetworkConnection, EntitySnapshot previousEntitySnapshot, EntitySnapshot latestEntitySnapshot, int latestClientTickReceived, int clientCommandingEntityID)
{
OutgoingMessage outgoingMessage = clientNetworkConnection.GetOutgoingMessageToSend();
ServerUpdateSerializer.Serialize(outgoingMessage, previousEntitySnapshot, latestEntitySnapshot, latestClientTickReceived, clientCommandingEntityID);
clientNetworkConnection.SendMessage(outgoingMessage);
}
/// <summary>
/// Sends the client an update of the given entity state and other information.
/// </summary>
public void SendServerUpdate(EntitySnapshot latestEntitySnapshot)
{
EntitySnapshot previousEntitySnapshot = this.parentServer.getEntitySnapshotForServerFrameTick(this.LatestFrameTickAcknowledgedByClient);
ServerUpdateSerializer.Send(this.clientNetworkConnection, previousEntitySnapshot, latestEntitySnapshot, this.LatestClientTickReceived, this.CommandingEntityID);
}