fix #2453; MOTD for lobby (to be fetched from file); different motd for each mod

OpenRA.Game/GameRules/Settings.cs

@@ -36,7 +36,6 @@ namespace OpenRA.GameRules
 		public int TimeOut = 0;
 		public bool Dedicated = false;
 		public bool DedicatedLoop = true;
-		public string DedicatedMOTD = null;
 
 		public ServerSettings() { }
 
@@ -54,7 +53,6 @@ namespace OpenRA.GameRules
 			TimeOut = other.TimeOut;
 			Dedicated = other.Dedicated;
 			DedicatedLoop = other.DedicatedLoop;
-			DedicatedMOTD = other.DedicatedMOTD;
 		}
 	}
 

OpenRA.Game/Network/Session.cs

@@ -78,7 +78,6 @@ namespace OpenRA.Network
 			public bool LockTeams = true;	// don't allow team changes after game start.
 			public bool AllowCheats = false;
 			public bool Dedicated;
-			public string DedicatedMOTD;
 		}
 
 		public Session(string[] mods)

OpenRA.Game/Server/Server.cs

@@ -119,7 +119,6 @@ namespace OpenRA.Server
 			lobbyInfo.GlobalSettings.ServerName = settings.Name;
 			lobbyInfo.GlobalSettings.Ban = settings.Ban;
 			lobbyInfo.GlobalSettings.Dedicated = settings.Dedicated;
-			lobbyInfo.GlobalSettings.DedicatedMOTD = settings.DedicatedMOTD;
 
 			foreach (var t in ServerTraits.WithInterface<INotifyServerStart>())
 				t.ServerStarted(this);
@@ -329,10 +328,14 @@ namespace OpenRA.Server
 				SyncLobbyInfo();
 				SendChat(newConn, "has joined the game.");
 
+				if ( File.Exists("{0}motd_{1}.txt".F(Platform.SupportDir, lobbyInfo.GlobalSettings.Mods[0])) )
+				{
+					var motd = System.IO.File.ReadAllText("{0}motd_{1}.txt".F(Platform.SupportDir, lobbyInfo.GlobalSettings.Mods[0]));
+					SendChatTo(newConn, motd);
+				}
+
 				if ( lobbyInfo.GlobalSettings.Dedicated )
 				{
-					if (lobbyInfo.GlobalSettings.DedicatedMOTD != null)
-						SendChatTo(newConn, lobbyInfo.GlobalSettings.DedicatedMOTD);
 					if (client.IsAdmin)
 						SendChatTo(newConn, "    You are admin now!");
 					else