Relay vehicle controls; on shutdown tell players to reconnect (restart) instead of a final disconnect

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

GameServer.cs

@@ -162,8 +162,9 @@ public sealed class GameServer
 
         foreach (var c in clients.Values)
         {
-            // Grund mitschicken: die Spieler sehen ihn im Hauptmenü
-            if (c.State == ClientState.Joined) c.Conn.Send(MsgType.Reject, Wire.Build(w => w.Write("The server was shut down.")));
+            // Meist ein Neustart (Update, docker compose up): die Spieler verbinden sich automatisch neu, sobald der
+            // Server wieder da ist. Bleibt er aus, bekommen sie nach ein paar Versuchen einen Hinweis im Hauptmenü.
+            if (c.State == ClientState.Joined) c.Conn.Send(MsgType.Reconnect, Wire.Build(w => w.Write("The server is restarting - reconnecting...")));
             c.Conn.CloseAfterSend("Server shutting down");
         }
         // Kurz warten, bis die Spieler die Meldung gelesen haben (sauber trennen statt hart abbrechen)
@@ -291,7 +292,7 @@ public sealed class GameServer
         t is MsgType.Player or MsgType.ObjStates or MsgType.ObjOwn or MsgType.ObjRelease or MsgType.FsmEvent
           or MsgType.VehicleFx or MsgType.WorldTime or MsgType.MoneyDelta or MsgType.DoorState or MsgType.Chat or MsgType.VarSync
           or MsgType.SpawnItem or MsgType.ItemAppeared or MsgType.ObjDestroy or MsgType.VehicleDamage
-          or MsgType.TrafficStates or MsgType.WorldVars or MsgType.HingeStates;
+          or MsgType.TrafficStates or MsgType.WorldVars or MsgType.HingeStates or MsgType.VehicleControls;
 
     /// <summary>Uhrzeit/Wetter gibt der Spieler mit der kleinsten ID vor (so rechnen es auch die Clients).</summary>
     int WorldAuthorityId => clients.Values.Where(c => c.State == ClientState.Joined).Select(c => c.Id).DefaultIfEmpty(-1).Min();

Protocol.cs

@@ -46,7 +46,8 @@ public enum MsgType : byte
     VehicleDamage = 39, // Unfallschaden (verformte Karosserie): int Mesh-Schlüssel, int Eckpunkte, int n, je [int Index, 3 float]
     TrafficStates = 40, // Verkehr, nur von der Welt-Autorität: int n, je [int Schlüssel, 3 float Pos, 4 float Rot, 3 float Geschw.]
     WorldVars = 41,     // Jobs/Laden: int n, je [int Schlüssel, byte Typ, Wert]
-    HingeStates = 42    // Autotüren/Haube/Kofferraum: int n, je [int Schlüssel, 3 float Pos, 4 float Rot relativ zum Auto]
+    HingeStates = 42,   // Autotüren/Haube/Kofferraum: int n, je [int Schlüssel, 3 float Pos, 4 float Rot relativ zum Auto]
+    VehicleControls = 43 // Zündung/Motor/Licht ...: int n, je [int FSM-Schlüssel, string Zustand]
 }
 
 public readonly record struct Message(MsgType Type, byte[] Payload)

Tests/Program.cs

@@ -128,6 +128,8 @@ try
     Check(await bob.WaitFor(MsgType.WorldVars) != null, "Job/shop values are relayed");
     alice.Send(MsgType.HingeStates, Wire.Build(w => { w.Write(0); }));
     Check(await bob.WaitFor(MsgType.HingeStates) != null, "Car door angles are relayed");
+    alice.Send(MsgType.VehicleControls, Wire.Build(w => { w.Write(1); w.Write(123); w.Write("Lights"); }));
+    Check(await bob.WaitFor(MsgType.VehicleControls) != null, "Vehicle controls (ignition, lights ...) are relayed");
     byte[] trafficPayload = Wire.Build(w => { w.Write(0); });
     bob.Send(MsgType.TrafficStates, trafficPayload);
     Check(await alice.WaitFor(MsgType.TrafficStates, 800) == null, "Traffic from a player who is not the world authority is ignored");