public Packet(Packet packet)
{
Type = packet.Type;
Data.Clear();
Data.AddRange(packet.Data.ToArray());
Checksum = packet.Checksum;
}
public void TransmitPacket(Packet packet)
{
var e = new PacketSendingEventArgs(packet);
OnPacketSending(e);
if (e.Cancel) return;
Log.Add(Log.Severity.Debug, "TX {0}: {1}", packet.Type.ToString(), packet);
TransmitSignature(packet.Signatures);
}
public static Packet AssignPlayerFailed(UInt16 gameId, UInt16 taggerId)
{
var packet = new Packet();
packet.Type = PacketType.AssignPlayerFailed;
packet.Data.Add(new Signature(SignatureType.Data, gameId));
packet.Data.Add(new Signature(SignatureType.Data, taggerId));
packet.PopulateChecksum();
return packet;
}
public static Packet AnnounceGame(GameDefinition gameDefinition)
{
var packet = new Packet();
packet.Type = gameDefinition.GameTypeInfo.PacketType;
packet.Data.Add(new Signature(SignatureType.Data, gameDefinition.GameId));
packet.Data.Add(new Signature(SignatureType.Data, BinaryCodedDecimal.FromDecimal((byte)gameDefinition.GameTimeMinutes)));
packet.Data.Add(new Signature(SignatureType.Data, BinaryCodedDecimal.FromDecimal((byte)gameDefinition.Tags)));
packet.Data.Add(new Signature(SignatureType.Data, BinaryCodedDecimal.FromDecimal((byte)gameDefinition.Reloads)));
packet.Data.Add(new Signature(SignatureType.Data, BinaryCodedDecimal.FromDecimal((byte)gameDefinition.Shields)));
packet.Data.Add(new Signature(SignatureType.Data, BinaryCodedDecimal.FromDecimal((byte)gameDefinition.Mega)));
var flags1 = (byte) ((gameDefinition.ExtendedTagging ? 1 : 0) << 7 |
(gameDefinition.LimitedReloads ? 1 : 0) << 6 |
(gameDefinition.LimitedMega ? 1 : 0) << 5 |
(gameDefinition.TeamTags ? 1 : 0) << 4 |
(gameDefinition.MedicMode ? 1 : 0) << 3 |
(gameDefinition.SlowTags ? 1 : 0) << 2 |
(gameDefinition.GameTypeInfo.HuntThePrey ? 1 : 0) << 1 |
(gameDefinition.GameTypeInfo.ReverseHuntDirection ? 1 : 0) << 0);
var flags2 = (byte) ((gameDefinition.GameTypeInfo.Zones ? 1 : 0) << 7 |
(gameDefinition.GameTypeInfo.TeamZones ? 1 : 0) << 6 |
(gameDefinition.GameTypeInfo.NeutralizePlayersTaggedInZone ? 1 : 0) << 5 |
(gameDefinition.GameTypeInfo.ZonesRevivePlayers ? 1 : 0) << 4 |
(gameDefinition.GameTypeInfo.HospitalZones ? 1 : 0) << 3 |
(gameDefinition.GameTypeInfo.ZonesTagPlayers ? 1 : 0) << 2 |
(gameDefinition.TeamCount & 0x03));
// hard code these here for now
switch (gameDefinition.GameType)
{
case GameType.Respawn: // RESP
case GameType.RespawnTwoTeams: // 2TRS
case GameType.RespawnThreeTeams: // 3TRS
flags1 |= 0x80;
flags2 |= 0x30;
break;
}
packet.Data.Add(new Signature(SignatureType.Data, flags1));
packet.Data.Add(new Signature(SignatureType.Data, flags2));
if (gameDefinition.GameTypeInfo.PacketType == PacketType.AnnounceGameSpecial)
{
packet.Data.AddRange(gameDefinition.GameTypeInfo.Name.GetSignatures(4, true));
}
packet.PopulateChecksum();
return packet;
}
public bool ProcessPacket(Packet packet)
{
var packetType = (PacketType) packet.PacketTypeSignature.Data;
switch (packetType)
{
case PacketType.SingleTagReport:
if (packet.Data.Count != 4) break;
var isReply = ((packet.Data[1].Data & 0x80) & (packet.Data[2].Data & 0x80)) != 0;
var teamPlayerId1 = TeamPlayerId.FromPacked34(packet.Data[1].Data);
var teamPlayerId2 = TeamPlayerId.FromPacked34(packet.Data[2].Data);
var tagsReceived = packet.Data[3].Data;
var replyText = isReply ? "replied to tag count request from" : "requested tag count from";
Log.Add(Log.Severity.Information, "Player {0} {1} player {2}. Player {0} received {3} tags from player {2}.",
teamPlayerId1, replyText, teamPlayerId2, tagsReceived);
return true;
case PacketType.TextMessage:
var message = new StringBuilder();
var i = 0;
while (i < packet.Data.Count &&
packet.Data[i].Data >= 0x20 &&
packet.Data[i].Data <= 0x7e &&
packet.Data[i].BitCount == 8)
{
message.Append(Convert.ToChar(packet.Data[i].Data));
i++;
}
Log.Add(Log.Severity.Information, "Received Text Message: {0}", message);
return true;
case PacketType.SpecialAttack:
var type = "Unknown Type";
if (packet.Data.Count == 4)
{
switch (packet.Data[2].Data)
{
case 0x77:
type = "EM Peacemaker";
break;
case 0xb1:
type = "Talus Airstrike";
break;
}
}
Log.Add(Log.Severity.Information, "Special Attack: {0} - {1}", type, packet);
AssertUnknownBits("Special Attack Flags 1", packet.Data[1], 0xff);
AssertUnknownBits("Special Attack Flags 2", packet.Data[2], 0xff);
AssertUnknownBits("Special Attack Flags 3", packet.Data[3], 0xff);
AssertUnknownBits("Special Attack Flags 4", packet.Data[4], 0xff);
return true;
}
switch (HostingState)
{
case HostingStates.Idle:
return true;
case HostingStates.Adding:
case HostingStates.AcknowledgePlayerAssignment:
if (packet.Data.Count < 2) return false;
var gameId = packet.Data[0].Data;
var taggerId = packet.Data[1].Data;
switch (packet.Type)
{
case PacketType.RequestJoinGame:
if (packet.Data.Count < 3) return false;
var requestedTeam = (UInt16) (packet.Data[2].Data & 0x03);
return ProcessRequestJoinGame(gameId, taggerId, requestedTeam);
case PacketType.AcknowledgePlayerAssignment:
return ProcessAcknowledgePlayerAssignment(gameId, taggerId);
default:
Log.Add(Log.Severity.Warning, "Unexpected packet: {0}", packet);
return false;
}
case HostingStates.Summary:
switch (packet.Type)
{
case PacketType.TagSummary:
return ProcessTagSummary(packet);
case PacketType.TeamOneTagReport:
case PacketType.TeamTwoTagReport:
case PacketType.TeamThreeTagReport:
return ProcessTeamTagReport(packet);
}
break;
}
return false;
}
private bool ProcessTeamTagReport(Packet packet)
{
if (packet.Data.Count < 4) return false;
var gameId = packet.Data[0].Data;
if (gameId != _gameDefinition.GameId)
{
Log.Add(Log.Severity.Warning, "Wrong game ID.");
return false;
}
// what team do the scores relate to hits from
var taggedByTeamNumber = (int)(packet.PacketTypeSignature.Data - PacketType.TeamOneTagReport + 1);
var teamPlayerId = TeamPlayerId.FromPacked44(packet.Data[1].Data);
var player = Players.Player(teamPlayerId);
if (player == null) return false;
if (player.TagSummaryReceived && !player.TeamTagReportsExpected[taggedByTeamNumber - 1])
{
Log.Add(Log.Severity.Warning, "A tag report from player {0} for team {1} was not expected.",
player.TeamPlayerId, taggedByTeamNumber);
}
if (player.TeamTagReportsReceived[taggedByTeamNumber - 1])
{
Log.Add(Log.Severity.Warning, "A tag report from player {0} for team {1} was already received. Discarding.",
player.TeamPlayerId, taggedByTeamNumber);
return false;
}
player.TeamTagReportsReceived[taggedByTeamNumber - 1] = true;
var scoreBitmask = packet.Data[2].Data;
var packetIndex = 3;
var mask = scoreBitmask;
for (var taggedByTeamPlayerNumber = 1; taggedByTeamPlayerNumber <= 8; taggedByTeamPlayerNumber++)
{
var taggedByTeamPlayerId = new TeamPlayerId(taggedByTeamNumber, taggedByTeamPlayerNumber);
var hasTags = ((mask >> (taggedByTeamPlayerNumber - 1)) & 0x1) != 0;
if (!hasTags) continue;
if (packet.Data.Count <= packetIndex)
{
Log.Add(Log.Severity.Warning, "Ran off end of score report");
return false;
}
var tagsTaken = BinaryCodedDecimal.ToDecimal(packet.Data[packetIndex].Data);
player.TaggedByPlayerCounts[taggedByTeamPlayerId.PlayerNumber - 1] = tagsTaken;
var taggedByPlayer = Players.Player(taggedByTeamPlayerId);
if (taggedByPlayer == null) continue;
taggedByPlayer.TaggedPlayerCounts[player.TeamPlayerId.PlayerNumber - 1] = tagsTaken;
packetIndex++;
}
OnPlayerListChanged(new PlayerListChangedEventArgs(Players));
return true;
}
private bool ProcessTagSummary(Packet packet)
{
if (packet.Type != PacketType.TagSummary)
{
Log.Add(Log.Severity.Warning, "Unexpected packet: {0}", packet);
return false;
}
if (packet.Data.Count != 8)
{
return false;
}
var gameId = packet.Data[0].Data;
if (gameId != _gameDefinition.GameId)
{
Log.Add(Log.Severity.Warning, "Wrong game ID.");
return false;
}
var teamPlayerId = TeamPlayerId.FromPacked44(packet.Data[1].Data);
var tagsTaken = packet.Data[2].Data; // Hex Coded Decimal
var surviveTimeMinutes = packet.Data[3].Data;
var surviveTimeSeconds = packet.Data[4].Data;
var zoneTimeMinutes = packet.Data[5].Data;
var zoneTimeSeconds = packet.Data[6].Data;
var teamTagReports = packet.Data[7];
AssertUnknownBits("teamTagReports", teamTagReports, 0xf1);
var player = _players.Player(teamPlayerId);
if (player == null)
{
Log.Add(Log.Severity.Warning, "Unable to find player for score report.");
return false;
}
player.SurviveTime = new TimeSpan(0, 0, BinaryCodedDecimal.ToDecimal(surviveTimeMinutes), BinaryCodedDecimal.ToDecimal(surviveTimeSeconds));
player.Survived = player.SurviveTime.TotalMinutes >= GameDefinition.GameTimeMinutes;
player.TagsTaken = BinaryCodedDecimal.ToDecimal(tagsTaken);
player.TeamTagReportsExpected[0] = (teamTagReports.Data & 0x2) != 0;
player.TeamTagReportsExpected[1] = (teamTagReports.Data & 0x4) != 0;
player.TeamTagReportsExpected[2] = (teamTagReports.Data & 0x8) != 0;
player.ZoneTime = new TimeSpan(0, 0, BinaryCodedDecimal.ToDecimal(zoneTimeMinutes), BinaryCodedDecimal.ToDecimal(zoneTimeSeconds));
player.TagSummaryReceived = true;
Log.Add(Log.Severity.Information, "Received tag summary from {0}.", player.NameAndNumber);
OnPlayerListChanged(new PlayerListChangedEventArgs(Players));
return true;
}
private static Signature CalculateChecksum(Packet packet)
{
var checksum = (byte) packet.PacketTypeSignature.Data;
foreach (var signature in packet.Data)
{
if (signature.Type != SignatureType.Data) continue;
checksum += (byte) signature.Data;
}
return new Signature(SignatureType.Checksum, checksum);
}
public PacketSendingEventArgs(Packet packet)
{
Cancel = false;
Packet = packet;
}
private void ProcessDataSignature(UInt16 data, byte bitCount)
{
if (bitCount == 9)
{
if ((data & 0x100) == 0) // packet type
{
_incomingPacket = new Packet
{
PacketTypeSignature = new Signature(SignatureType.Packet, data),
};
}
else // checksum
{
if (_incomingPacket == null)
{
Log.Add(Log.Severity.Debug, "Stray checksum signature received.");
return;
}
if (!(_incomingPacket.PacketTypeSignatureValid && _incomingPacket.DataValid))
{
Log.Add(Log.Severity.Debug, "Checksum received for invalid packet: {0}", _incomingPacket);
_incomingPacket = null;
return;
}
_incomingPacket.Checksum = new Signature(SignatureType.Checksum, data);
if (_incomingPacket.ChecksumValid)
{
Log.Add(Log.Severity.Debug, "RX {0}: {1}", _incomingPacket.Type.ToString(), _incomingPacket);
// TODO: Make this event driven
if (!_hostGun.ProcessPacket(_incomingPacket))
{
Log.Add(Log.Severity.Warning, "ProcessPacket() failed: {0}", _incomingPacket);
}
}
else
{
Log.Add(Log.Severity.Debug, "Invalid checksum received. {0}", _incomingPacket);
}
_incomingPacket = null;
}
}
else if (bitCount == 8) // data
{
if (_incomingPacket == null || !_incomingPacket.PacketTypeSignatureValid)
{
Log.Add(Log.Severity.Debug, "Stray data packet received. 0x{0:X2} ({1})", data, bitCount);
_incomingPacket = null;
return;
}
_incomingPacket.Data.Add(new Signature(SignatureType.Data, data));
}
else if (bitCount == 7) // tag
{
_incomingPacket = null;
ProcessTag(new Signature(SignatureType.Tag, data, bitCount));
}
else
{
Log.Add(Log.Severity.Debug, "Stray data packet received. 0x{0:X2} ({1})", data, bitCount);
}
}
public static Packet Countdown(UInt16 gameId, byte remainingSeconds, int playerCountTeam1, int playerCountTeam2, int playerCountTeam3)
{
var packet = new Packet();
packet.Type = PacketType.AnnounceCountdown;
packet.Data.Add(new Signature(SignatureType.Data, gameId));
packet.Data.Add(new Signature(SignatureType.Data, BinaryCodedDecimal.FromDecimal(remainingSeconds)));
packet.Data.Add(new Signature(SignatureType.Data, (UInt16)(playerCountTeam1 & 0xff)));
packet.Data.Add(new Signature(SignatureType.Data, (UInt16)(playerCountTeam2 & 0xff)));
packet.Data.Add(new Signature(SignatureType.Data, (UInt16)(playerCountTeam3 & 0xff)));
packet.PopulateChecksum();
return packet;
}
public static Packet TextMessage(String message)
{
var packet = new Packet();
packet.Type = PacketType.TextMessage;
if (message.Length > 10) message = message.Substring(0, 10);
var messageChars = message.ToCharArray();
foreach (var character in messageChars)
{
packet.Data.Add(new Signature(SignatureType.Data, character));
}
packet.Data.Add(new Signature(SignatureType.Data, 0)); // null terminator
packet.PopulateChecksum();
return packet;
}
public static Packet RequestTagReport(UInt16 gameId, TeamPlayerId teamPlayerId)
{
var packet = new Packet();
packet.Type = PacketType.RequestTagReport;
packet.Data.Add(new Signature(SignatureType.Data, gameId));
packet.Data.Add(new Signature(SignatureType.Data, teamPlayerId.Packed44));
packet.Data.Add(new Signature(SignatureType.Data, 0x0f)); // TODO: Magic Number
packet.PopulateChecksum();
return packet;
}
public static Packet RequestJoinGame(UInt16 gameId, UInt16 taggerId, int preferredTeamNumber)
{
var packet = new Packet();
packet.Type = PacketType.RequestJoinGame;
packet.Data.Add(new Signature(SignatureType.Data, gameId));
packet.Data.Add(new Signature(SignatureType.Data, taggerId));
packet.Data.Add(new Signature(SignatureType.Data, (UInt16)(preferredTeamNumber & 0x3)));
packet.PopulateChecksum();
return packet;
}
public static Packet RankReport(UInt16 gameId, int teamNumber, int teamRank, int[] playerRanks)
{
var packet = new Packet();
packet.Type = PacketType.RankReport;
packet.Data.Add(new Signature(SignatureType.Data, gameId));
var flags = (UInt16) (((teamNumber & 0xf) << 4) | (teamRank & 0xf));
packet.Data.Add(new Signature(SignatureType.Data, flags));
for (int i = 0; i < 8; i++)
{
if (playerRanks.Length > i)
{
packet.Data.Add(new Signature(SignatureType.Data, (UInt16) (playerRanks[i] & 0xff)));
}
else
{
packet.Data.Add(new Signature(SignatureType.Data, 0));
}
}
packet.PopulateChecksum();
return packet;
}
