fix race condition issues - WorldEvent and others

src/Core/GauntletRoom.cs

@@ -3,9 +3,11 @@ using sodoffmmo.Data;
 
 namespace sodoffmmo.Core;
 public class GauntletRoom : Room {
+    static object NextRoomLock = new object();
     static GauntletRoom? NextRoom = null;
 
     public static GauntletRoom Get() {
+        lock(NextRoomLock) {
             if (NextRoom != null && NextRoom.ClientsCount == 1) {
                 var ret = NextRoom!;
                 NextRoom = null;
@@ -15,6 +17,7 @@ public class GauntletRoom : Room {
                 return NextRoom!;
             }
         }
+    }
 
     public GauntletRoom() : base (null, "GauntletDO", true) {
         base.RoomVariables.Add(NetworkArray.VlElement("IS_RACE_ROOM", true));

src/Core/Room.cs

@@ -4,6 +4,7 @@ using sodoffmmo.Data;
 namespace sodoffmmo.Core;
 public class Room {
     public static int MaxId { get; private set; } = 2;
+    static object RoomsListLock = new object();
     protected static Dictionary<string, Room> rooms = new();
 
     List<Client> clients = new();
@@ -70,10 +71,12 @@ public class Room {
     public static Room Get(string name) => rooms[name];
     
     public static Room GetOrAdd(string name) {
+        lock(RoomsListLock) {
             if (!Room.Exists(name))
                 return new Room(name);
             return rooms[name];
         }
+    }
 
     public static Room[] AllRooms() {
         return rooms.Values.ToArray();

src/Core/WorldEvent.cs

@@ -10,16 +10,18 @@ class WorldEvent {
         NotActive
     }
     private static WorldEvent? _instance = null;
-    private object EventLock = new object();
+    private static object EventLock = new object();
     private Random random = new Random();
     private System.Timers.Timer? timer = null;
     
     public static WorldEvent Get() {
+        lock(EventLock) {
             if (_instance == null) {
                 _instance = new WorldEvent();
             }
             return _instance;
         }
+    }
     
     private WorldEvent() {
         startTime = DateTime.UtcNow.AddMinutes(-60);