private static void SendSnapshot(ServerClient client)
{
// send entity states
var message = new BitStream();
// reliable messages
for (uint i = client.ReliableAcknowledged + 1; i <= client.ReliableSequence; i++)
{
// header byte
message.WriteByte(Server.ReliableCommandNumber);
// command number
message.WriteUInt32(i);
// command
message.WriteString(client.ReliableCommands[i & (client.ReliableCommands.Length - 1)]);
}
message.WriteByte(Server.SnapshotNumber);
message.WriteUInt32(_serverTime);
message.WriteUInt32(client.LastReceivedReliableCommand);
var useDelta = true;
if ((client.Channel.SequenceOut - client.LastAcknowledgedMessage) >= 28)
{
useDelta = false;
Log.Write(LogLevel.Warning, "client {0} lagged behind more than [max stored old packets]", client.Name);
}
for (int i = 0; i < Entities.Length; i++)
{
var entity = Entities[i];
if (entity == null)
{
continue;
}
// write the entity number
message.WriteInt32(i, 12);
var entityBase = (useDelta) ? ((client.EntityBases[i] != null) ? client.EntityBases[i].Get() : null) : null;
var deltaMessage = new DeltaBitStream(entityBase, message);
// write the spawn key
deltaMessage.WriteInt32(entity.SpawnKey, 20);
// write the type code
deltaMessage.WriteInt32(entity.TypeCode, 4);
// write the actual data
entity.Serialize(deltaMessage);
// set the new base
if (client.EntityBases[i] == null)
{
client.EntityBases[i] = new ServerClientEntityBase(client);
}
client.EntityBases[i].Set(deltaMessage.NewBase);
}
message.WriteInt32(4095, 12);
message.WriteByte(0xFF);
// send the message
client.Channel.SendMessage(message);
}
private static void ProcessSnapshot(BitStream message)
{
if (State == ClientState.Connected)
{
State = ClientState.Ingame;
}
var snapshot = new Snapshot();
snapshot.Sequence = _serverChannel.SequenceIn;
snapshot.ServerTime = message.ReadUInt32();
_serverTimeDelta = (int)((int)snapshot.ServerTime - (int)_clientTime);
_reliableAcknowledged = message.ReadInt32();
int entityNumber = message.ReadInt32(12);
while (entityNumber != 4095)
{
var entityBase = (_entityBases[entityNumber] != null) ? _entityBases[entityNumber] : null;
var deltaMessage = new DeltaBitStream(entityBase, message);
var spawnKey = deltaMessage.ReadInt32(20);
var typeCode = deltaMessage.ReadInt32(4);
snapshot.Entities[entityNumber] = Entity.Create(typeCode);
snapshot.Entities[entityNumber].Deserialize(deltaMessage);
_entityBases[entityNumber] = deltaMessage.NewBase;
entityNumber = message.ReadInt32(12);
}
// push snapshot history array back by one
for (int i = (_snapHistory.Length - 2); i >= 0; i--)
{
_snapHistory[i + 1] = _snapHistory[i];
}
// and set the first snapshot to the current one
_snapHistory[0] = snapshot;
// define current and previous snapshots
int delayMsec = cl_snapDelay.GetValue <int>();
int numSnaps = 0;
for (int i = 0; i < _snapHistory.Length; i++)
{
if (_snapHistory[i] != null)
{
if (_snapHistory[i].ServerTime < (_snapHistory[0].ServerTime - delayMsec))
{
numSnaps = i;
break;
}
}
}
int snapDelay = Math.Max(0, Math.Min(_snapHistory.Length - 2, numSnaps));
_lastSnap = _snapHistory[snapDelay + 1];
_curSnap = _snapHistory[snapDelay];
if (_curSnap == null)
{
_curSnap = _snapHistory[0];
}
_curSnap.ClientTime = _clientTime;
}
public void SendMessage(BitStream stream)
{
SendMessage(stream.Bytes);
}