private static async void Handshake(Connection connection)
{
string line = await connection.reader.ReadLineAsync();
string[] tokens = line.Split(' ');
if (tokens[0] == "Bomberman")
{
string response;
lock(clientsPlaying){
response = "ACK " + clientsPlaying.Count;
connection.position = GameLogic.GetStartPosition(clientsPlaying.Count.ToString());
clientsPlaying.Add(connection);
clientsAll.Add(connection);
connection.playerNumber = clientsPlaying.Count;
}
Send(response, connection);
if (tokens[1] == true.ToString()) // client need updates
{
lock (clientUpdate) clientUpdate.Add(connection);
SendPlayground(connection);
}
if (tokens[2] == false.ToString()) // client is AI
{
lock (clientAI) clientAI.Add(connection);
SendAll("Update " + connection.playerNumber + " AI");
}
else // client is user
{
lock (clientPlayers) clientPlayers.Add(connection);
SendAll("Update " + connection.playerNumber + " Alive");
}
if (clientsPlaying.Count == 4) SendInitUpdate();
StartListening(connection);
}
}
private static void AcceptTcpClient(IAsyncResult ar)
{
try
{
allDone.Set();
TcpListener listener = (TcpListener)ar.AsyncState;
TcpClient client = listener.EndAcceptTcpClient(ar);
Connection connection = new Connection(client);
Handshake(connection);
}
catch (ObjectDisposedException) // server has been stopped
{
return;
}
}
private static void Clean(Connection connection)
{
try
{
clientsPlaying.Remove(connection);
clientAI.Remove(connection);
}
catch (ArgumentOutOfRangeException) // Called in middle of stopping server
{
return;
}
for (int i = 0; i < futureMoves.Count; i++)
{
FutureMove tmp = futureMoves.Dequeue();
if (tmp.connection != connection) futureMoves.Enqueue(tmp);
}
Program.playground.board[connection.position.X][connection.position.Y] = Square.Empty;
GameLogic.changes.Add(new Change(new Point(connection.position.X, connection.position.Y), Square.Empty));
lock (futureMoves)
{
if (futureMoves.Count == clientsPlaying.Count * 2) ProcessMoves();
}
}
private static void Send(string msg, Connection connection)
{
try
{
connection.writer.WriteLine(msg);
}
catch (System.IO.IOException) // client disconected
{
clientUpdate.Remove(connection);
Clean(connection);
SendUpdate("Update " + connection.playerNumber + " Disconected");
connection.client.Close();
lock (futureMoves)
{
if (futureMoves.Count == clientsPlaying.Count * 2) ProcessMoves();
}
return;
}
catch (ObjectDisposedException) // Called in middle of stopping server
{
return;
}
}
private static void AddMoves(string[] moves, Connection connection)
{
if (!clientsPlaying.Contains(connection)) return; // check if sender is regular client
lock (futureMoves)
{
if (futureMoves.Count == 0)
{
for (int i = 0; i < clientAI.Count; i++)
{
Send("SendMoves", clientAI[i]);
}
}
Movement movement = (Movement)int.Parse(moves[1]);
futureMoves.Enqueue(new FutureMove(movement, connection));
movement = (Movement)int.Parse(moves[2]);
futureMoves.Enqueue(new FutureMove(movement, connection));
lock (futureMoves)
{
if (futureMoves.Count == clientsPlaying.Count * 2) ProcessMoves();
}
}
}
private static void ProcessCommand(string command, Connection connection)
{
string[] tokens = command.Split(' ');
switch (tokens[0])
{
case "Move":
AddMoves(tokens, connection);
break;
default:
break;
}
}
private static async void StartListening(Connection connection)
{
string line;
try
{
while (connection.client.Connected)
{
line = await connection.reader.ReadLineAsync();
ProcessCommand(line, connection);
}
}
catch (System.IO.IOException) // connection with client has been lost
{
clientUpdate.Remove(connection);
Clean(connection);
SendUpdate("Update " + connection.playerNumber + " Disconected");
connection.client.Close();
lock (futureMoves)
{
if (futureMoves.Count == clientsPlaying.Count * 2) ProcessMoves();
}
}
catch (NullReferenceException) // client quit game
{
clientUpdate.Remove(connection);
Clean(connection);
SendUpdate("Update " + connection.playerNumber + " Quit");
connection.client.Close();
}
}
/// <summary>
/// Send to coresponding client to connection changes on playground
/// </summary>
/// <param name="connection">Receiver connection</param>
private static void SendChanges(Connection connection)
{
StringBuilder message = new StringBuilder("Change " + GameLogic.changes.Count + " ");
for (int i = 0; i < GameLogic.changes.Count; i++)
{
Change change = GameLogic.changes[i];
message.Append(change.coordinate.X + " " + change.coordinate.Y + " " + (int)change.square + " ");
}
Send(message.ToString(), connection);
}
/// <summary>
/// Send to coresponding client to connection whole playground
/// </summary>
/// <param name="connection">Receiver connection</param>
private static void SendPlayground(Connection connection)
{
StringBuilder message = new StringBuilder("Playground " + Playground.playgroundSize + " ");
for (int i = 0; i < Playground.playgroundSize; i++)
{
for (int j = 0; j < Playground.playgroundSize; j++)
{
message.Append((int)Program.playground.board[i][j] + " ");
}
}
string data = message.ToString();
Send(data, connection);
}