private void CommandRecieved(object sender, CommandEventArgs e)
{
//When a user connects set their client username
if (e.Command.CommandType == CommandType.UserConnected)
{
string username = e.Command.Data.Split(':')[2];
Console.WriteLine("Checking for : " + username);
bool nameAvailability = CheckUsernameAvailability(e.Command.SenderIP, e.Command.SenderPort, username);
if (nameAvailability)
{
string data = CheckForClientData(username);
SetClientUsername(e.Command.SenderIP, e.Command.SenderPort, username);
SetClientData(e.Command.SenderIP, e.Command.SenderPort, data);
SendUserStats(e.Command.SenderIP, e.Command.SenderPort, data);
AnswerUsernameRequest(e.Command.SenderIP, e.Command.SenderPort, nameAvailability);
e.Command.Data += (":" + data);
SendCommandToAll(e.Command);
}
else if (nameAvailability == false)
{
AnswerUsernameRequest(e.Command.SenderIP, e.Command.SenderPort, nameAvailability);
}
}
//User asks to disconnect
if (e.Command.CommandType == CommandType.UserDisconnectRequest)
{
int index = FindClientID(e.Command.SenderIP, e.Command.SenderPort);
string clientDetails = clientList[index].IP.ToString() + ":" + clientList[index].Port.ToString() + ":" + clientList[index].Username;
Console.WriteLine("User {0}:{1} ({2}) has disconnected ({3}/{4})", e.Command.SenderIP, e.Command.SenderPort, clientList[index].Username, DateTime.Now.ToShortTimeString(), DateTime.Now.ToLongDateString());
clientList[index].Disconnect();
clientList.RemoveAt(index);
Command cmd = new Command(CommandType.UserDisconnected, IPAddress.Broadcast);
cmd.SenderName = e.Command.SenderName;
cmd.SenderIP = e.Command.SenderIP;
cmd.SenderPort = e.Command.SenderPort;
cmd.Data = clientDetails;
SendCommandToAll(cmd);
}
//Reply to client list request
if (e.Command.CommandType == CommandType.ClientListRequest)
{
SendClientList(e.Command.SenderIP, e.Command.SenderPort);
}
//Sends message commands to all connected clients
if (e.Command.CommandType == CommandType.Message)
{
if (e.Command.TargetIP.Equals(IPAddress.Broadcast))
{
SendCommandToAll(e.Command);
}
else
{
SendCommandToClient(e.Command);
}
}
//Pass challenge request to challenged user
if (e.Command.CommandType == CommandType.ChallengeRequest)
{
int challengerID = FindClientID(e.Command.SenderIP, e.Command.SenderPort);
e.Command.Data = clientList[challengerID].Wins + ":" + clientList[challengerID].Losses;
SendCommandToClient(e.Command);
}
//Pass challenge response to challenger
if (e.Command.CommandType == CommandType.ChallengeResponse)
{
SendCommandToClient(e.Command);
}
//Handle game start request
if (e.Command.CommandType == CommandType.GameStartRequest)
{
IPAddress client2IP = IPAddress.Parse(e.Command.Data.Split(':')[0]);
int client2Port = int.Parse(e.Command.Data.Split(':')[1]);
int client1ID = FindClientID(e.Command.SenderIP, e.Command.SenderPort);
int client2ID = FindClientID(client2IP, client2Port);
BattleshipsGame game = new BattleshipsGame(clientList[client1ID], clientList[client2ID]);
Command cmd = new Command(CommandType.GameIDInform, e.Command.SenderIP, activeGames.Count.ToString());
cmd.SenderName = "server";
cmd.SenderIP = serverIP;
cmd.SenderPort = serverPort;
cmd.TargetPort = e.Command.SenderPort;
SendCommandToClient(cmd);
cmd.TargetIP = client2IP;
cmd.TargetPort = client2Port;
SendCommandToClient(cmd);
activeGames.Add(game);
}
//Handle ShipPlacementRequest
if (e.Command.CommandType == CommandType.GameShipRequest)
{
activeGames[int.Parse(e.Command.Data.Split(':')[0])].CommandRecieved(e);
}
//Handle GameShotRequest
if (e.Command.CommandType == CommandType.GameShotRequest)
{
activeGames[int.Parse(e.Command.Data.Split(':')[0])].CommandRecieved(e);
}
//Handle GameOverInform
if (e.Command.CommandType == CommandType.GameOverInform)
{
activeGames[int.Parse(e.Command.Data.Split(':')[0])].GameOverMessageCount++;
if (activeGames[int.Parse(e.Command.Data.Split(':')[0])].GameOverMessageCount >= 2)
{
PostGameStatisticsUpdate(activeGames[int.Parse(e.Command.Data.Split(':')[0])].Clients);
activeGames.RemoveAt(int.Parse(e.Command.Data.Split(':')[0]));
GC.Collect();
}
}
//Handle user data request
if (e.Command.CommandType == CommandType.UserDataRequest)
{
int ID = FindClientID(e.Command.TargetIP, e.Command.TargetPort);
string data = CheckForClientData(clientList[ID].Username);
Command cmd = new Command(CommandType.UserDataInform, e.Command.SenderIP, data);
cmd.SenderIP = e.Command.TargetIP;
cmd.SenderPort = e.Command.TargetPort;
cmd.SenderName = clientList[ID].Username; //Client username and IPEndpoint data is stored as command sender data
cmd.TargetPort = e.Command.SenderPort;
SendCommandToClient(cmd);
}
}
private void CommandRecieved(object sender, CommandEventArgs e)
{
//When a user connects set their client username
if (e.Command.CommandType == CommandType.UserConnected)
{
string username = e.Command.Data.Split(':')[2];
Console.WriteLine("Checking for : " + username);
bool nameAvailability = CheckUsernameAvailability(e.Command.SenderIP, e.Command.SenderPort, username);
if (nameAvailability)
{
string data = CheckForClientData(username);
SetClientUsername(e.Command.SenderIP, e.Command.SenderPort, username);
SetClientData(e.Command.SenderIP, e.Command.SenderPort, data);
SendUserStats(e.Command.SenderIP, e.Command.SenderPort, data);
AnswerUsernameRequest(e.Command.SenderIP, e.Command.SenderPort, nameAvailability);
e.Command.Data += (":" + data);
SendCommandToAll(e.Command);
}
else if (nameAvailability == false)
{
AnswerUsernameRequest(e.Command.SenderIP, e.Command.SenderPort, nameAvailability);
}
}
//User asks to disconnect
if (e.Command.CommandType == CommandType.UserDisconnectRequest)
{
int index = FindClientID(e.Command.SenderIP, e.Command.SenderPort);
string clientDetails = clientList[index].IP.ToString() + ":" + clientList[index].Port.ToString() + ":" + clientList[index].Username;
Console.WriteLine("User {0}:{1} ({2}) has disconnected ({3}/{4})", e.Command.SenderIP, e.Command.SenderPort, clientList[index].Username, DateTime.Now.ToShortTimeString(), DateTime.Now.ToLongDateString());
clientList[index].Disconnect();
clientList.RemoveAt(index);
Command cmd = new Command(CommandType.UserDisconnected, Command.BroadcastAddress);
cmd.SenderName = e.Command.SenderName;
cmd.SenderIP = e.Command.SenderIP;
cmd.SenderPort = e.Command.SenderPort;
cmd.Data = clientDetails;
SendCommandToAll(cmd);
}
//Reply to client list request
if (e.Command.CommandType == CommandType.ClientListRequest)
{
SendClientList(e.Command.SenderIP, e.Command.SenderPort);
}
//Sends message commands to all connected clients
if (e.Command.CommandType == CommandType.Message)
{
if (e.Command.TargetIP.Equals(Command.BroadcastAddress))
{
SendCommandToAll(e.Command);
}
else
{
SendCommandToClient(e.Command);
}
}
//Pass challenge request to challenged user
if (e.Command.CommandType == CommandType.ChallengeRequest)
{
int challengerID = FindClientID(e.Command.SenderIP, e.Command.SenderPort);
e.Command.Data = clientList[challengerID].Wins + ":" + clientList[challengerID].Losses;
SendCommandToClient(e.Command);
}
//Pass challenge response to challenger
if (e.Command.CommandType == CommandType.ChallengeResponse)
{
SendCommandToClient(e.Command);
}
//Handle game start request
if (e.Command.CommandType == CommandType.GameStartRequest)
{
IPAddress client2IP = IPAddress.Parse(e.Command.Data.Split(':')[0]);
int client2Port = int.Parse(e.Command.Data.Split(':')[1]);
int client1ID = FindClientID(e.Command.SenderIP, e.Command.SenderPort);
int client2ID = FindClientID(client2IP, client2Port);
BattleshipsGame game = new BattleshipsGame(clientList[client1ID], clientList[client2ID]);
Command cmd = new Command(CommandType.GameIDInform, e.Command.SenderIP, activeGames.Count.ToString());
cmd.SenderName = "server";
cmd.SenderIP = serverIP;
cmd.SenderPort = serverPort;
cmd.TargetPort = e.Command.SenderPort;
SendCommandToClient(cmd);
cmd.TargetIP = client2IP;
cmd.TargetPort = client2Port;
SendCommandToClient(cmd);
activeGames.Add(game);
}
//Handle ShipPlacementRequest
if (e.Command.CommandType == CommandType.GameShipRequest)
{
activeGames[int.Parse(e.Command.Data.Split(':')[0])].CommandRecieved(e);
}
//Handle GameShotRequest
if (e.Command.CommandType == CommandType.GameShotRequest)
{
activeGames[int.Parse(e.Command.Data.Split(':')[0])].CommandRecieved(e);
}
//Handle GameOverInform
if (e.Command.CommandType == CommandType.GameOverInform)
{
activeGames[int.Parse(e.Command.Data.Split(':')[0])].GameOverMessageCount++;
if (activeGames[int.Parse(e.Command.Data.Split(':')[0])].GameOverMessageCount >= 2)
{
PostGameStatisticsUpdate(activeGames[int.Parse(e.Command.Data.Split(':')[0])].Clients);
activeGames.RemoveAt(int.Parse(e.Command.Data.Split(':')[0]));
GC.Collect();
}
}
//Handle user data request
if (e.Command.CommandType == CommandType.UserDataRequest)
{
int ID = FindClientID(e.Command.TargetIP, e.Command.TargetPort);
string data = CheckForClientData(clientList[ID].Username);
Command cmd = new Command(CommandType.UserDataInform, e.Command.SenderIP, data);
cmd.SenderIP = e.Command.TargetIP;
cmd.SenderPort = e.Command.TargetPort;
cmd.SenderName = clientList[ID].Username; //Client username and IPEndpoint data is stored as command sender data
cmd.TargetPort = e.Command.SenderPort;
SendCommandToClient(cmd);
}
}