feat: adding option to stop spanwn on unauthenticated

Adding optional check for IsAuthenticated for objects using default visiblity.
Will check IsAuthenticated before adding observer in AddAllReadyServerConnectionsToObservers

Assets/Mirage/Runtime/NetworkIdentity.cs

@@ -815,8 +815,14 @@ internal void AddAllReadyServerConnectionsToObservers()
             // add all server connections
             foreach (var player in Server.Players)
             {
-                if (player.SceneIsReady)
-                    AddObserver(player);
+                if (!player.SceneIsReady)
+                    continue;
+
+                // todo replace this with a better visibility system (where default checks auth/scene ready)
+                if (ServerObjectManager.OnlySpawnOnAuthenticated && !player.IsAuthenticated)
+                    continue;
+
+                AddObserver(player);
             }
 
             // add local host connection (if any)

Assets/Mirage/Runtime/ServerObjectManager.cs

@@ -53,6 +53,10 @@ public class ServerObjectManager : MonoBehaviour
         [FormerlySerializedAs("networkSceneManager")]
         public NetworkSceneManager NetworkSceneManager;
 
+        [Header("Authentication")]
+        [Tooltip("Will only send spawn message to Players who are Authenticated. Checks the Player.IsAuthenticated property")]
+        public bool OnlySpawnOnAuthenticated;
+
         public INetIdGenerator NetIdGenerator;
         private uint _nextNetworkId = 1;
 
@@ -554,6 +558,7 @@ public void Spawn(NetworkIdentity identity, INetworkPlayer owner)
 
         internal void SendSpawnMessage(NetworkIdentity identity, INetworkPlayer player)
         {
+            logger.Assert(!OnlySpawnOnAuthenticated || player.IsAuthenticated, "SendSpawnMessage should only be called if OnlySpanwOnAuthenticated is false or player is authenticated");
             if (logger.LogEnabled()) logger.Log($"Server SendSpawnMessage: name={identity.name} sceneId={identity.SceneId:X} netId={identity.NetId}");
 
             // one writer for owner, one for observers