public void Seek(Int64 offset, SeekOrigin origin)
{
if (readingGameData)
{
Debug.Assert(offset <= Int32.MaxValue);
bitBuffer.SeekBytes((Int32)offset, origin);
}
else
{
fileStream.Seek(offset, origin);
}
}
/// <summary>
/// Parses S2C_PLAYER.
/// </summary>
/// <param name="data"></param>
/// <param name="si"></param>
private void ParsePlayerQueryReply(BitBuffer bitBuffer)
{
Int32 nPlayers = bitBuffer.ReadByte();
for (Int32 i = 0; i < nPlayers; i++)
{
bitBuffer.SeekBytes(1); // skip index
Player player = new Player();
player.Name = bitBuffer.ReadString();
player.Score = bitBuffer.ReadInt32();
Single time = bitBuffer.ReadSingle();
player.Time = (time == -1 ? "BOT" : Common.DurationString(time));
mainWindowInterface.AddPlayerToServer(this, player);
}
}
/// <summary>
/// Parses S2C_INFO.
/// </summary>
/// <param name="data"></param>
/// <param name="si"></param>
private void ParseInfoQueryReply(Byte[] data)
{
BitBuffer bitBuffer = new BitBuffer(data);
if (bitBuffer.ReadInt32() != -1)
{
throw new ApplicationException("Bad A2S_INFO reply");
}
// read reply type
Byte type = bitBuffer.ReadByte();
Boolean sourceEngine;
if (type == S2C_INFO_SOURCE)
{
sourceEngine = true;
}
else if (type == S2C_INFO_GOLDSRC)
{
sourceEngine = false;
}
else
{
throw new ApplicationException(String.Format("Bad A2S_INFO type: {0}", type));
}
mainWindowInterface.SetServerProperty(this, "SourceEngine", sourceEngine);
// read the rest
if (!sourceEngine)
{
bitBuffer.ReadString();
//si.Address = bitBuffer.ReadString(); // resolved hostname
}
else
{
bitBuffer.SeekBytes(1); // network version
}
mainWindowInterface.SetServerProperty(this, "Title", bitBuffer.ReadString()); // server name
mainWindowInterface.SetServerProperty(this, "Map", bitBuffer.ReadString()); // map
String gameFolder = bitBuffer.ReadString();
mainWindowInterface.SetServerProperty(this, "GameFolder", gameFolder); // game folder
String gameName = bitBuffer.ReadString(); // game name
if (sourceEngine)
{
bitBuffer.SeekBytes(2); // app id
}
mainWindowInterface.SetServerProperty(this, "NumSpectators", bitBuffer.ReadByte()); // num spectators
mainWindowInterface.SetServerProperty(this, "MaxSpectators", bitBuffer.ReadByte()); // max spectators
bitBuffer.SeekBytes(1); // goldsrc: network version, source: num bots
bitBuffer.SeekBytes(1); // dedicated
bitBuffer.SeekBytes(1); // os
mainWindowInterface.SetServerProperty(this, "PasswordProtected", (bitBuffer.ReadByte() == 1));
// determine game name
Game game = GameManager.Find((sourceEngine ? Game.Engines.Source : Game.Engines.HalfLife), gameFolder);
if (game == null)
{
mainWindowInterface.SetServerProperty(this, "GameName", gameName);
}
else
{
mainWindowInterface.SetServerProperty(this, "GameName", game.Name);
}
}
public void ParseGameDataMessages(Byte[] frameData, Function <Byte, Byte> userMessageCallback)
{
Int64 gameDataStartOffset = fileStream.Position - frameData.Length;
// read game data frame into memory
bitBuffer = new BitBuffer(frameData);
readingGameData = true;
try
{
BeginMessageLog(gameDataStartOffset, frameData);
// start parsing messages
while (true)
{
Int32 messageFrameOffset = bitBuffer.CurrentByte;
Byte messageId = bitBuffer.ReadByte();
String messageName = Enum.GetName(typeof(MessageId), messageId);
if (messageName == null) // a user message, presumably
{
messageName = FindMessageIdString(messageId);
}
LogMessage(messageId, messageName, messageFrameOffset);
MessageHandler messageHandler = FindMessageHandler(messageId);
// Handle the conversion of user message id's.
// Used by demo writing to convert to the current network protocol.
if (messageId > 64 && userMessageCallback != null)
{
Byte newMessageId = userMessageCallback(messageId);
if (newMessageId != messageId)
{
// write the new id to the bitbuffer
bitBuffer.SeekBytes(-1);
bitBuffer.RemoveBytes(1);
bitBuffer.InsertBytes(new Byte[] { newMessageId });
}
}
// unknown message
if (messageHandler == null)
{
throw new ApplicationException(String.Format("Cannot find message handler for message id \"[{0}] {1}\"", messageId, messageName));
}
// callback takes priority over length
if (messageHandler.Callback != null)
{
messageHandler.Callback();
}
else if (messageHandler.Length != -1)
{
Seek(messageHandler.Length);
}
else
{
// user messages
if (messageId >= 64)
{
// All non-engine user messages start with a byte that is the number of bytes in the message remaining.
Byte length = bitBuffer.ReadByte();
Seek(length);
}
else
{
throw new ApplicationException(String.Format("Unknown message id \"{0}\"", messageId));
}
}
// Check if we've reached the end of the frame, or if any of the messages have called SkipGameDataFrame (readingGameData will be false).
if (bitBuffer.CurrentByte == bitBuffer.Length || !readingGameData)
{
break;
}
}
}
finally
{
readingGameData = false;
}
}
