Add ability for host to change game name

ClientCore/CnCNet5/NameValidator.cs

@@ -60,8 +60,41 @@ public static string GetValidOfflineName(string name)
 
             if (validName.Length > ClientConfiguration.Instance.MaxNameLength)
                 return validName.Substring(0, ClientConfiguration.Instance.MaxNameLength);
-            
+
             return validName;
         }
+
+        /// <summary>
+        /// Checks if a game name is valid for CnCNet.
+        /// </summary>
+        /// <param name="gameName">Game lobby name.</param>
+        /// <returns>Null if the game name is valid, otherwise a string that tells
+        /// what is wrong with the name.</returns>
+        public static string IsGameNameValid(string gameName)
+        {
+
+            if (string.IsNullOrEmpty(gameName))
+            {
+                return "Please enter a game name.".L10N("Client:Main:GameNameMissing");
+            }
+
+            char[] disallowedCharacters = { ',', ';' };
+            if (gameName.IndexOfAny(disallowedCharacters) != -1)
+            {
+                return "Game name contains disallowed characters.".L10N("Client:Main:GameNameDisallowedChars");
+            }
+
+            if (gameName.Length > 23)
+            {
+                return "Game name is too long.".L10N("Client:Main:GameNameTooLong");
+            }
+
+            if (new ProfanityFilter().IsOffensive(gameName))
+            {
+                return "Please enter a less offensive game name.".L10N("Client:Main:GameNameOffensiveText");
+            }
+
+            return null;
+        }
     }
 }

DXMainClient/DXGUI/Multiplayer/CnCNet/GameCreationWindow.cs

@@ -8,6 +8,7 @@
 using Rampastring.XNAUI.XNAControls;
 using System;
 using System.IO;
+using ClientCore.CnCNet5;
 
 namespace DTAClient.DXGUI.Multiplayer.CnCNet
 {
@@ -239,17 +240,14 @@ private void BtnLoadMPGame_LeftClick(object sender, EventArgs e)
 
         private void BtnCreateGame_LeftClick(object sender, EventArgs e)
         {
-            string gameName = tbGameName.Text.Replace(";", string.Empty);
 
-            if (string.IsNullOrEmpty(gameName))
-            {
-                return;
-            }
+            var gameName = tbGameName.Text;
+            var gameNameValid = NameValidator.IsGameNameValid(gameName);
 
-            if (new ProfanityFilter().IsOffensive(gameName))
+            if (!string.IsNullOrEmpty(gameNameValid))
             {
-                XNAMessageBox.Show(WindowManager, "Offensive game name".L10N("Client:Main:GameNameOffensiveTitle"),
-                    "Please enter a less offensive game name.".L10N("Client:Main:GameNameOffensiveText"));
+                XNAMessageBox.Show(WindowManager, "Invalid game name.".L10N("Client:Main:GameNameInvalid"),
+                    gameNameValid);
                 return;
             }
 
@@ -259,7 +257,7 @@ private void BtnCreateGame_LeftClick(object sender, EventArgs e)
             }
 
             GameCreated?.Invoke(this, 
-                new GameCreationEventArgs(gameName,int.Parse(ddMaxPlayers.SelectedItem.Text), 
+                new GameCreationEventArgs(gameName, int.Parse(ddMaxPlayers.SelectedItem.Text), 
                 tbPassword.Text,tunnelHandler.Tunnels[lbTunnelList.SelectedIndex],
                 ddSkillLevel.SelectedIndex)
             );

DXMainClient/DXGUI/Multiplayer/GameLobby/CnCNetGameLobby.cs

@@ -37,6 +37,7 @@ public class CnCNetGameLobby : MultiplayerGameLobby
         private const string MAP_SHARING_DOWNLOAD_REQUEST = "MAPOK";
         private const string MAP_SHARING_UPLOAD_REQUEST = "MAPREQ";
         private const string MAP_SHARING_DISABLED_MESSAGE = "MAPSDISABLED";
+        private const string GAME_NAME_CHANGED = "GNC";
         private const string CHEAT_DETECTED_MESSAGE = "CD";
         private const string DICE_ROLL_MESSAGE = "DR";
         private const string CHANGE_TUNNEL_SERVER_MESSAGE = "CHTNL";
@@ -87,6 +88,7 @@ PrivateMessagingWindow pmWindow
                 new StringCommandHandler("MM", CheaterNotification),
                 new StringCommandHandler(DICE_ROLL_MESSAGE, HandleDiceRollResult),
                 new NoParamCommandHandler(CHEAT_DETECTED_MESSAGE, HandleCheatDetectedMessage),
+                new StringCommandHandler(GAME_NAME_CHANGED, HandleGameNameChangeMessage),
                 new StringCommandHandler(CHANGE_TUNNEL_SERVER_MESSAGE, HandleTunnelServerChangeMessage)
             };
 
@@ -97,6 +99,8 @@ PrivateMessagingWindow pmWindow
 
             AddChatBoxCommand(new ChatBoxCommand("TUNNELINFO",
                 "View tunnel server information".L10N("Client:Main:TunnelInfoCommand"), false, PrintTunnelServerInformation));
+            AddChatBoxCommand(new ChatBoxCommand("GAMENAME",
+                "Change a game's lobby name (game host only).\nExample: \"/gamename 2v2 3v3\"".L10N("Client:Main:ChangeGameNameCommand"), true, s => ChangeGameName(s)));
             AddChatBoxCommand(new ChatBoxCommand("CHANGETUNNEL",
                 "Change the used CnCNet tunnel server (game host only)".L10N("Client:Main:ChangeTunnelCommand"),
                 true, (s) => ShowTunnelSelectionWindow("Select tunnel server:".L10N("Client:Main:SelectTunnelServerCommand"))));
@@ -1561,6 +1565,12 @@ protected override void BanPlayer(int playerIndex)
         private void HandleCheatDetectedMessage(string sender) =>
             AddNotice(string.Format("{0} has modified game files during the client session. They are likely attempting to cheat!".L10N("Client:Main:PlayerModifyFileCheat"), sender), Color.Red);
 
+        private void HandleGameNameChangeMessage(string sender, string newGameName)
+        {
+            AddNotice(String.Format("The game host has changed the game name to {0}".L10N("Client:Main:HostGameNameChanged"), newGameName));
+            channel.UIName = newGameName;
+        }
+
         private void HandleTunnelServerChangeMessage(string sender, string tunnelAddressAndPort)
         {
             if (sender != hostName)
@@ -1882,6 +1892,30 @@ private void DownloadMapByIdCommand(string parameters)
 
         #region Game broadcasting logic
 
+        /// <summary>
+        /// Handles changing the lobby UIName
+        /// </summary>
+        /// <param name="gameName">The new name for the hosted game.</param>
+        private void ChangeGameName(string gameName)
+        {
+            var gameNameValid = NameValidator.IsGameNameValid(gameName);
+
+            if (!string.IsNullOrEmpty(gameNameValid))
+            {
+                XNAMessageBox.Show(WindowManager, "Invalid game name.".L10N("Client:Main:GameNameInvalid"),
+                    gameNameValid);
+                return;
+            }
+
+            //update the name and broadcast to everyone
+            channel.UIName = gameName;
+            AccelerateGameBroadcasting();
+
+            //inform the players in the room
+            channel.SendCTCPMessage(GAME_NAME_CHANGED + " " + gameName, QueuedMessageType.SYSTEM_MESSAGE, priority: 9);
+            AddNotice(String.Format("Game name changed to {0}.".L10N("Client:Main:GameNameChanged"), gameName));
+        }
+
         /// <summary>
         /// Lowers the time until the next game broadcasting message.
         /// </summary>

DXMainClient/Online/Channel.cs

@@ -63,7 +63,7 @@ public Channel(string uiName, string channelName, bool persistent, bool isChatCh
 
         #region Public members
 
-        public string UIName { get; }
+        public string UIName { get; set; }
 
         public string ChannelName { get; }