private static void SendCommandPacket()
{
var message = new BitStream();
UserCommand?command, lastCommand = null;
// last received server message
message.WriteUInt32(_lastServerMessage);
// last received reliable message
message.WriteUInt32(_lastReliableMessage);
// current server state ID
message.WriteInt32(_svStateID);
// reliable messages
for (int i = _reliableAcknowledged + 1; i <= _reliableSequence; i++)
{
// header byte
message.WriteByte(2);
// command number
message.WriteInt32(i);
// command
message.WriteString(_reliableCommands[i & (_reliableCommands.Length - 1)]);
}
// header byte
message.WriteByte(UserCommand.CommandType);
// command count
message.WriteByte((byte)ClientInput.NumCommands);
while ((command = ClientInput.GetCommand()) != null)
{
// write a command
command.Value.Serialize(message, lastCommand);
// set the new command as base
lastCommand = command;
}
// end of command
message.WriteByte(0xFF);
// now send the command to the server
_serverChannel.SendMessage(message);
_commandSequence++;
}
private static void SendInitializationState(ServerClient client)
{
// send enough state for the client to initialize the game
var message = new BitStream();
message.WriteByte(Server.InitStateNumber);
// current state id
message.WriteInt32(_stateID);
// map name
message.WriteString(_mapName);
// and send the message
message.WriteByte(0xFF);
client.Channel.SendMessage(message);
client.LastInitStateMessage = client.Channel.SequenceOut;
}
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);
}