com.unity.netcode.gameobjects@2.1.1

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

Additional documentation and release notes are available at [Multiplayer Documentation](https://docs-multiplayer.unity3d.com).

## [2.1.1] - 2024-10-18

### Added

- Added ability to edit the `NetworkConfig.AutoSpawnPlayerPrefabClientSide` within the inspector view. (#3097)
- Added `IContactEventHandlerWithInfo` that derives from `IContactEventHandler` that can be updated per frame to provide `ContactEventHandlerInfo` information to the `RigidbodyContactEventManager` when processing collisions. (#3094)
  - `ContactEventHandlerInfo.ProvideNonRigidBodyContactEvents`: When set to true, non-`Rigidbody` collisions with the registered `Rigidbody` will generate contact event notifications. (#3094)
  - `ContactEventHandlerInfo.HasContactEventPriority`: When set to true, the `Rigidbody` will be prioritized as the instance that generates the event if the `Rigidbody` colliding does not have priority. (#3094)
- Added a static `NetworkManager.OnInstantiated` event notification to be able to track when a new `NetworkManager` instance has been instantiated. (#3088)
- Added a static `NetworkManager.OnDestroying` event notification to be able to track when an existing `NetworkManager` instance is being destroyed. (#3088)

### Fixed

- Fixed issue where `NetworkPrefabProcessor` would not mark the prefab list as dirty and prevent saving the `DefaultNetworkPrefabs` asset when only imports or only deletes were detected.(#3103)
- Fixed an issue where nested `NetworkTransform` components in owner authoritative mode cleared their initial settings on the server, causing improper synchronization. (#3099)
- Fixed issue with service not getting synchronized with in-scene placed `NetworkObject` instances when a session owner starts a `SceneEventType.Load` event. (#3096)
- Fixed issue with the in-scene network prefab instance update menu tool where it was not properly updating scenes when invoked on the root prefab instance. (#3092)
- Fixed an issue where newly synchronizing clients would always receive current `NetworkVariable` values, potentially causing issues with collections if there were pending updates. Now, pending state updates serialize previous values to avoid duplicates on new clients. (#3081)
- Fixed issue where changing ownership would mark every `NetworkVariable` dirty. Now, it will only mark any `NetworkVariable` with owner read permissions as dirty and will send/flush any pending updates to all clients prior to sending the change in ownership message. (#3081)
- Fixed an issue where transferring ownership of `NetworkVariable` collections didn't update the new owner’s previous value, causing the last added value to be detected as a change during additions or removals. (#3081)
- Fixed issue where a client (or server) with no write permissions for a `NetworkVariable` using a standard .NET collection type could still modify the collection which could cause various issues depending upon the modification and collection type. (#3081)
- Fixed issue where applying the position and/or rotation to the `NetworkManager.ConnectionApprovalResponse` when connection approval and auto-spawn player prefab were enabled would not apply the position and/or rotation when the player prefab was instantiated. (#3078)
- Fixed issue where `NetworkObject.SpawnWithObservers` was not being honored when spawning the player prefab. (#3077)
- Fixed issue with the client count not being correct on the host or server side when a client disconnects itself from a session. (#3075)

### Changed

- Changed `NetworkConfig.AutoSpawnPlayerPrefabClientSide` is no longer automatically set when starting `NetworkManager`. (#3097)
- Updated `NetworkVariableDeltaMessage` so the server now forwards delta state updates from clients immediately, instead of waiting until the end of the frame or the next network tick. (#3081)

Runtime/Core/NetworkBehaviourUpdater.cs

@@ -19,10 +19,15 @@ namespace Unity.Netcode
 
         internal void AddForUpdate(NetworkObject networkObject)
         {
+            // Since this is a HashSet, we don't need to worry about duplicate entries
             m_PendingDirtyNetworkObjects.Add(networkObject);
         }
 
-        internal void NetworkBehaviourUpdate()
+        /// <summary>
+        /// Sends NetworkVariable deltas
+        /// </summary>
+        /// <param name="forceSend">internal only, when changing ownership we want to send this before the change in ownership message</param>
+        internal void NetworkBehaviourUpdate(bool forceSend = false)
         {
 #if DEVELOPMENT_BUILD || UNITY_EDITOR
             m_NetworkBehaviourUpdate.Begin();
@@ -53,7 +58,7 @@ namespace Unity.Netcode
                                 // Sync just the variables for just the objects this client sees
                                 for (int k = 0; k < dirtyObj.ChildNetworkBehaviours.Count; k++)
                                 {
-                                    dirtyObj.ChildNetworkBehaviours[k].NetworkVariableUpdate(client.ClientId);
+                                    dirtyObj.ChildNetworkBehaviours[k].NetworkVariableUpdate(client.ClientId, forceSend);
                                 }
                             }
                         }
@@ -72,7 +77,7 @@ namespace Unity.Netcode
                             }
                             for (int k = 0; k < sobj.ChildNetworkBehaviours.Count; k++)
                             {
-                                sobj.ChildNetworkBehaviours[k].NetworkVariableUpdate(NetworkManager.ServerClientId);
+                                sobj.ChildNetworkBehaviours[k].NetworkVariableUpdate(NetworkManager.ServerClientId, forceSend);
                             }
                         }
                     }
@@ -85,19 +90,24 @@ namespace Unity.Netcode
                         var behaviour = dirtyObj.ChildNetworkBehaviours[k];
                         for (int i = 0; i < behaviour.NetworkVariableFields.Count; i++)
                         {
+                            // Set to true for NetworkVariable to ignore duplication of the
+                            // "internal original value" for collections support.
+                            behaviour.NetworkVariableFields[i].NetworkUpdaterCheck = true;
                             if (behaviour.NetworkVariableFields[i].IsDirty() &&
                                 !behaviour.NetworkVariableIndexesToResetSet.Contains(i))
                             {
                                 behaviour.NetworkVariableIndexesToResetSet.Add(i);
                                 behaviour.NetworkVariableIndexesToReset.Add(i);
                             }
+                            // Reset back to false when done
+                            behaviour.NetworkVariableFields[i].NetworkUpdaterCheck = false;
                         }
                     }
                 }
                 // Now, reset all the no-longer-dirty variables
                 foreach (var dirtyobj in m_DirtyNetworkObjects)
                 {
-                    dirtyobj.PostNetworkVariableWrite();
+                    dirtyobj.PostNetworkVariableWrite(forceSend);
                     // Once done processing, we set the previous owner id to the current owner id
                     dirtyobj.PreviousOwnerId = dirtyobj.OwnerClientId;
                 }