Server 2.9.6: no old positions after reset / new game

Late position updates from players that are being reconnected after reset-world or a new game
were stored again, so everyone spawned at their old-world position. Tracking stops for those
clients now. Test added.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

GameServer.cs

@@ -746,6 +746,9 @@ public sealed class GameServer
         int count = 0;
         foreach (var c in clients.Values.Where(x => x.State == ClientState.Joined).ToList())
         {
+            // Positionen/Bedürfnisse aus der alten Welt, die bis zum Trennen noch ankommen, nicht mehr speichern - sonst
+            // erscheint man nach Reset/neuem Spiel wieder dort, wo man in der alten Welt stand
+            c.TrackPositionFrom = DateTime.MaxValue;
             c.Conn.Send(MsgType.Reconnect, Wire.Build(w => w.Write(message)));
             c.Conn.CloseAfterSend("Reconnect after world change");
             count++;

MSCO.Server.csproj

@@ -7,7 +7,7 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <RootNamespace>MSCO.Server</RootNamespace>
     <AssemblyName>MSCO.Server</AssemblyName>
-    <Version>2.9.5</Version>
+    <Version>2.9.6</Version>
     <Company>MBM</Company>
     <Product>MSCO Dedicated Server</Product>
     <InvariantGlobalization>true</InvariantGlobalization>

Tests/Program.cs

@@ -1,4 +1,4 @@
-using System.Net.Sockets;
+using System.Net.Sockets;
 using MSCO.Server;
 
 // Protokoll-Tests gegen den echten Server-Code: startet einen Server offline (ohne Master, ohne Lizenz) auf
@@ -235,11 +235,24 @@ try
 
     Console.WriteLine("== reset-world makes everyone reconnect");
     var r1 = await TestClient.Join("Resetter", 0, null);
+    r1.Send(MsgType.Ready, Array.Empty<byte>());
+    await r1.WaitFor(MsgType.WorldSnapshot);
+    await Task.Delay(8500);
+    r1.Send(MsgType.Player, PlayerPos(950f, 1f, -653f));               // irgendwo in der alten Welt
+    await Task.Delay(300);
     Srv().EnqueueCommand("reset-world");
     var rec = await r1.WaitFor(MsgType.Reconnect);
+    r1.Send(MsgType.Player, PlayerPos(951f, 1f, -654f));               // kommt noch an, bevor die Verbindung zu ist
     Check(rec != null && new BinaryReader(new MemoryStream(rec)).ReadString().Contains("reset"), "Players get the 'world is being reset' reconnect message");
     await Task.Delay(300);
     Check(r1.IsClosedByServer(), "Their connection is closed so they load the fresh world");
+    var rejoined = await TestClient.Join("Resetter", 0, null);
+    rejoined.Send(MsgType.Ready, Array.Empty<byte>());
+    var resetSpawn = Snapshot.Parse(await rejoined.WaitFor(MsgType.WorldSnapshot)).Spawn;
+    Check(resetSpawn == null, "After a reset nobody spawns at their old position (also not from late position updates): " +
+          (resetSpawn == null ? "none" : string.Join(", ", resetSpawn)));
+    rejoined.Close();
+    await Task.Delay(300);
 
     Console.WriteLine("== Joining gets the CURRENT save game from a player in the game");
     var inGame = await TestClient.Join("InGame", 0, null);