/// <summary>
/// Proxy function that processes the selected color and sends it to the Game host
/// </summary>
/// <param name="color"></param>
/// <param name="effects"></param>
public async Task SendColorToHost(string color, SpecialCardActions effects)
{
ServerGameSession session = MvcApplication.Manager.FindSessionByClientConnectionId(Context.ConnectionId);
if (session != null)
{
PlayerObject player = session.game.Players.FirstOrDefault(n => n.connid == Context.ConnectionId);
if (player != null)
{
switch (color)
{
case "green":
case "yellow":
case "red":
case "blue":
await session.UpdateColorInHost(player, color, effects);
break;
case "error":
default:
await session.UpdateColorInHost(player, null, null);
break;
}
}
}
}
/// <summary>
/// Proxy function that sends the pressed card to the Game host
/// </summary>
/// <param name="cardName"></param>
public async Task PostCard(string cardName)
{
ServerGameSession sGame = MvcApplication.Manager.FindSessionByClientConnectionId(Context.ConnectionId);
if (sGame != null)
{
UnoGame game = sGame.game;
//get the player object
PlayerObject player = game.Players.FirstOrDefault(n => n.connid == Context.ConnectionId);
if (player != null)
{
//get the card object
CardObject card = player.cards.FirstOrDefault(n => n.name == cardName);
if (card != null)
{
//send the game to the host, and let the host process it
await sGame.PlayCard(player.id, card);
}
else
{
//todo: maybe not end the session, but there is some cheating going on
await Clients.Caller.endSession("The card you played was not in your posession.");
}
}
else
{
await Clients.Caller.endSession("You are not a member of this game");
}
}
else
{
await Clients.Caller.endSession("You are not a member of a game");
}
}
/// <summary>
/// Proxy function that is called after a user picks a color, the function checks if it needs to send cards from the draw four card.
/// </summary>
/// <param name="game">game object</param>
/// <param name="effects">the effects object</param>
/// <returns></returns>
public async Task HandleSpecialAfterColorPick(UnoGame game, SpecialCardActions effects)
{
ServerGameSession sGame = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (effects.sendColorWheel)
{
if (effects.cardDrawAmount != 0)
{
//send the NEXT client the amount of cards.
game.CurrentPlayer = GetNextPlayerId(game, null);
string targetPlayer = new string(game.CurrentPlayer.ToCharArray());
game.CurrentPlayer = GetNextPlayerId(game, null);
await PushGame(game);
Clients.Caller.drawCardFromSpecial(targetPlayer, effects.cardDrawAmount);
}
else
{
game.CurrentPlayer = GetNextPlayerId(game, null);
}
await PushGame(game);
//set the current playing name:
await MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId).UpdateCurrentPlayingName(game.Players.FirstOrDefault(n => n.id == game.CurrentPlayer));
}
}
/// <summary>
/// Checks if the password belongs to a game and if the game is still available
/// </summary>
/// <param name="password"></param>
/// <returns>Returns the status message, if the game exists, a redirect will happen through a seperate client call.</returns>
public string CreateClientSessionFromPassword(string password)
{
ServerGameSession session = MvcApplication.Manager.FindSessionByPassword(password);
if (session == null)
{
return("Game does not exists, try again please.");
}
if (!session.game.HasAvailablePlayerSpots())
{
return("This game is full, you can create a new one or check if you have the correct code.");
}
if (session.GameStarted)
{
return("Game has already started, ask the game owner to wait longer next time.");
}
lock (PlayerSelectionLock) //this is going to cause issues with more active games, players will have to wait a bit longer before they get a selectable game assigned
{
PlayerObject p = session.game.Players.FirstOrDefault(n => n.connid == "" && !n.UserPicked);
p.UserPicked = true;
string clientId = p.id; //todo prevent racecondition / deadlock if 2 players join at the same time by using a request queue of some sort.
Clients.Caller.redirectToClientGame(clientId);
}
return("Game has been found, you will be redirected shortly...");
}
/// <summary>
/// Proxy function that stops the game and sends the clients back to the lobby
/// </summary>
/// <returns></returns>
public async Task EndGame()
{
ServerGameSession sGame = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
await sGame?.EndGameForClients();
MvcApplication.Manager.EndGame(sGame);
await GlobalHost.ConnectionManager.GetHubContext <SessionHub>().Clients.All.setSessions(MvcApplication.Manager.GetGameSessions());
}
/// <summary>
/// Proxy function that reports uno to the Game host
/// </summary>
/// <returns></returns>
public async Task ReportUno()
{
ServerGameSession game = MvcApplication.Manager.FindSessionByClientConnectionId(Context.ConnectionId);
if (game != null)
{
PlayerObject player = game.game.Players.FirstOrDefault(n => n.connid == Context.ConnectionId);
player.reportedUno = true;
await game.UpdateHost();
}
}
/// <summary>
/// Proxy function that requests a card from the Draw Pile at the Game host
/// </summary>
public async Task DrawCardFromDeck()
{
string connId = Context.ConnectionId;
ServerGameSession session = MvcApplication.Manager.FindSessionByClientConnectionId(Context.ConnectionId);
if (session != null)
{
UnoGame game = session.game;
PlayerObject player = game.Players.FirstOrDefault(n => n.connid == connId);
await session.DrawCard(player.id);
}
}
/// <summary>
/// Proxy function that causes a game update on every connected screen
/// </summary>
/// <returns></returns>
public async Task Update()
{
ServerGameSession game = MvcApplication.Manager.FindSessionByClientConnectionId(Context.ConnectionId);
if (game != null)
{
await game.UpdateAll();
}
else
{
await Clients.Caller.endSession("unkown game id was passed to the server.");
}
}
// GET: Host
public ActionResult Index(string id)
{
ServerGameSession game = MvcApplication.Manager.FindSession(id);
if (game != null)
{
return(View(game));
}
else
{
return(View("Error"));
}
}
/// <summary>
/// Proxy function that allows the host to send a message to all connected clients (this is only implemented in the console atm)
/// </summary>
/// <param name="message">the message to relay</param>
public async Task RelayMessage(string message)
{
ServerGameSession sGame = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (sGame != null)
{
await sGame.MessageClients(message);
}
else
{
Clients.Caller.endSession("unkown game id was passed to the server.");
}
}
/// <summary>
/// Proxy function that processes the game after someone won.
/// </summary>
/// <param name="PlayerId">id of the player that won</param>
/// <returns></returns>
public async Task ProcessGameWon(string PlayerId)
{
ServerGameSession game = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (game != null)
{
await game.GameWon(PlayerId);
}
else
{
Clients.Caller.endSession("unkown game id was passed to the server.");
}
}
/// <summary>
/// Proxy function that is called when an Action card is used in the game, the function decides what the game should do.
/// </summary>
/// <param name="game">current game object</param>
/// <param name="effects">effects object</param>
/// <returns></returns>
public async Task HandleSpecialCard(UnoGame game, SpecialCardActions effects)
{
ServerGameSession sGame = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
string currentPlayer = game.CurrentPlayer;
if (effects.sendColorWheel)
{
//send the colorwheel update to the current client.
//after receiving the color wheel update advance the turn
await sGame.ShowColorWheelInClient(effects);
}
else if (effects.cardDrawAmount != 0)
{
//send the NEXT client the amount of cards.
game.CurrentPlayer = GetNextPlayerId(game, null);
string targetPlayer = new string(game.CurrentPlayer.ToCharArray());
game.CurrentPlayer = GetNextPlayerId(game, null);
await PushGame(game);
await Clients.Caller.drawCardFromSpecial(targetPlayer, effects.cardDrawAmount);
}
else if (effects.skipNextPerson)
{
//the skip is handled in code
game.CurrentPlayer = GetNextPlayerId(game, effects);
}
else if (effects.reverseOrder)
{
game.DirectionClockwise = !game.DirectionClockwise;
if (game.Players.Count > 2)
{
game.CurrentPlayer = GetNextPlayerId(game, null);
}
}
int drawCards = CheckUno(game, currentPlayer);
await PushGame(game);
//set the current playing name:
PlayerObject pObject = game.Players.FirstOrDefault(n => n.id == game.CurrentPlayer);
await MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId).UpdateCurrentPlayingName(pObject);
if (drawCards > 0)
{
await Clients.Caller.drawCardFromSpecial(currentPlayer, drawCards);
}
else if (drawCards == -69)
{
await Clients.Caller.gameWon(currentPlayer);
}
}
/// <summary>
/// Proxy function that creates the game object server side.
/// </summary>
/// <param name="gameId"></param>
/// <returns>Return the games password to display to the viewers.</returns>
public async Task <string> InitGame(string gameId)
{
ServerGameSession game = MvcApplication.Manager.FindSession(gameId);
if (game != null)
{
if (string.IsNullOrEmpty(game.GameConnectionId) && !game.GameStarted)
{
game.GameConnectionId = Context.ConnectionId;
await Clients.Caller.setGameMode("AWAITING_PLAYERS");
if (game.game.Players.Count == 0)
{
game.game.CreateNewPlayerObjects();
}
else
{
if (game.game.HasConnectedPlayers())
{
await Clients.Caller.setGameMode("AWAITING_PLAYERS_REFRESHED");
await game.UpdateHost();
}
}
}
else if (string.IsNullOrEmpty(game.GameConnectionId) && game.GameStarted)
{
game.GameConnectionId = Context.ConnectionId;
await Clients.Caller.setGameMode("RESUMING_GAME");
await game.UpdateHost();
PlayerObject pObject = game.game.Players.FirstOrDefault(n => n.id == game.game.CurrentPlayer);
await game.UpdateCurrentPlayingName(pObject);
await Clients.Caller.displayMessage($"Game is resuming");
}
else
{
Clients.Caller.endSession("game is already being hosted somewhere else.");
return(null);
}
return(game.GamePassword);
}
else
{
Clients.Caller.endSession("unkown game id was passed to the server.");
}
return(null);
}
/// <summary>
/// Proxy funtion that causes an update on all connected screens.
/// </summary>
/// <returns></returns>
public async Task Update()
{
ServerGameSession game = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (game != null)
{
await game.UpdateAll();
PlayerObject pObject = game.game.Players.FirstOrDefault(n => n.id == game.game.CurrentPlayer);
await game.UpdateCurrentPlayingName(pObject);
}
else
{
Clients.Caller.endSession("unkown game id was passed to the server.");
}
}
public override Task OnDisconnected(bool stopCalled)
{
//find game by connection id -> dbe1b95e-ea84-40f9-a570-455ca8edf6e2
ServerGameSession game = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (game != null)
{
game.GameConnectionId = null;
if (game.HasGameEnded || !game.game.HasConnectedPlayers())
{
MvcApplication.Manager.EndGame(game);
}
}
return(base.OnDisconnected(stopCalled));
}
// GET: Client
public ActionResult Index(string id)
{
ServerGameSession game = MvcApplication.Manager.FindSessionByClientId(id);
if (game != null)
{
ClientGameSession session = new ClientGameSession();
session.ClientId = id;
session.GameId = game.GameId;
session.GameName = game.GameName;
return(View(session));
}
else
{
return(View("Error"));
}
}
public override Task OnDisconnected(bool stopCalled)
{
ServerGameSession game = MvcApplication.Manager.FindSessionByClientConnectionId(Context.ConnectionId);
if (game != null)
{
lock (PlayerSelectionLock)
{
game.game.Players.First(n => n.connid == Context.ConnectionId).connid = "";
}
//check if this is the last client disconnecting, and if there is no more host, remove the game
if (game.game.Players.Where(n => n.connid != "").Count() == game.game.Players.Count && game.GameConnectionId == "")
{
MvcApplication.Manager.EndGame(game);
}
}
return(base.OnDisconnected(stopCalled));
}
/// <summary>
/// Proxy function that starts the game
/// </summary>
/// <returns></returns>
public async Task StartGame()
{
ServerGameSession game = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (game != null)
{
game.GameStarted = true;
//remove the empty player objects: no need for new players to connect after the game has started
game.game.Players.RemoveAll(n => n.connid == "");
await Clients.Caller.startGame(game.game.Players);
await Clients.Caller.displayMessage($"Game has started");
await game.UpdateCurrentPlayingName(game.game.Players[0]);
}
else
{
await Clients.Caller.endSession("unkown game id was passed to the server.");
}
}
/// <summary>
/// Proxy function that connects this client with a Game host
/// </summary>
/// <param name="hostId">id of the host</param>
/// <param name="clientId">id of the current client (not connection id)</param>
/// <param name="playername">the name provided by the client.</param>
/// <returns></returns>
public async Task SubscribeToHost(string hostId, string clientId, string playername)
{
string connId = Context.ConnectionId;
//find the session in memory
ServerGameSession game = MvcApplication.Manager.FindSession(hostId);
if (game != null)
{
//check if game is at max players
if (game.game.Players.Where(n => n.connid != "").Count() < game.MaxClients)
{
if (game.game.Players.First(n => n.id == clientId).connid != "")
{
//game slot is in use
await Clients.Caller.endSession("This place has already been taken by another player.");
}
else
{
lock (PlayerSelectionLock)
{
PlayerObject p = game.game.Players.First(n => n.id == clientId);
p.connid = connId;
p.name = playername;
}
await game.UpdateAll();
}
}
else
{
await Clients.Caller.endSession("This game is already at its max players.");
}
}
else
{
await Clients.Caller.endSession("This game does not exist");
}
}
/// <summary>
/// Proxy and local function that syncs the JS and C# backend with eachother.
/// </summary>
/// <param name="game"></param>
/// <returns></returns>
public async Task PushGame(UnoGame game)
{
ServerGameSession sGame = MvcApplication.Manager.FindSessionByConnectionId(Context.ConnectionId);
if (sGame != null)
{
if (sGame.game.FullDeck.Count == 0 || sGame.game.CurrentPlayer == null)
{
//new game, select first player from list.
sGame.game = game;
sGame.game.CurrentPlayer = sGame.game.Players[0].id;
}
else
{
sGame.game = game;
}
await sGame.UpdateAll();
}
else
{
await Clients.Caller.endSession("unkown game id was passed to the server.");
}
}
public void EndGame(ServerGameSession session)
{
Sessions.Remove(session);
}
