com.unity.netcode.gameobjects@2.0.0-exp.4

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).

## [2.0.0-exp.4] - 2024-05-31

### Added

- Added `NetworkRigidbodyBase.AttachToFixedJoint` and `NetworkRigidbodyBase.DetachFromFixedJoint` to replace parenting for rigid bodies that have `NetworkRigidbodyBase.UseRigidBodyForMotion` enabled. (#2933)
- Added `NetworkBehaviour.OnNetworkPreSpawn` and `NetworkBehaviour.OnNetworkPostSpawn` methods that provide the ability to handle pre and post spawning actions during the `NetworkObject` spawn sequence. (#2912)
- Added a client-side only `NetworkBehaviour.OnNetworkSessionSynchronized` convenience method that is invoked on all `NetworkBehaviour`s after a newly joined client has finished synchronizing with the network session in progress. (#2912)
- Added `NetworkBehaviour.OnInSceneObjectsSpawned` convenience method that is invoked when all in-scene `NetworkObject`s have been spawned after a scene has been loaded or upon a host or server starting. (#2912)

### Fixed

- Fixed issue where non-authoritative rigid bodies with `NetworkRigidbodyBase.UseRigidBodyForMotion` enabled would constantly log errors about the renderTime being before `StartTimeConsumed`. (#2933)
- Fixed issue where in-scene placed NetworkObjects could be destroyed if a client disconnects early and/or before approval. (#2924)
- Fixed issue where a `NetworkObject` component's associated `NetworkBehaviour` components would not be detected if scene loading is disabled in the editor and the currently loaded scene has in-scene placed `NetworkObject`s. (#2912)
- Fixed issue where an in-scene placed `NetworkObject` with `NetworkTransform` that is also parented under a `GameObject` would not properly synchronize when the parent `GameObject` had a world space position other than 0,0,0. (#2898)

### Changed

- Change all the access modifiers of test class from Public to Internal (#2930)
- Changed messages are now sorted by enum values as opposed to ordinally sorting the messages by their type name. (#2929)
- Changed `NetworkClient.SessionModeTypes` to `NetworkClient.NetworkTopologyTypes`. (#2875)
- Changed `NetworkClient.SessionModeType` to `NetworkClient.NetworkTopologyType`. (#2875)
- Changed `NetworkConfig.SessionMode` to `NeworkConfig.NetworkTopology`. (#2875)

Tests/Runtime/NetworkObject/NetworkObjectSynchronizationTests.cs

@@ -14,7 +14,7 @@ namespace Unity.Netcode.RuntimeTests
     [TestFixture(VariableLengthSafety.EnabledNetVarSafety, HostOrServer.Host)]
     [TestFixture(VariableLengthSafety.DisableNetVarSafety, HostOrServer.Server)]
     [TestFixture(VariableLengthSafety.EnabledNetVarSafety, HostOrServer.Server)]
-    public class NetworkObjectSynchronizationTests : NetcodeIntegrationTest
+    internal class NetworkObjectSynchronizationTests : NetcodeIntegrationTest
     {
         private const int k_NumberToSpawn = 30;
         protected override int NumberOfClients => 0;
@@ -382,7 +382,7 @@ namespace Unity.Netcode.RuntimeTests
     /// the synchronization process will continue (i.e. it will skip over that block
     /// of the reader buffer).
     /// </summary>
-    public class NetworkBehaviourWithNetworkVariables : NetworkBehaviour
+    internal class NetworkBehaviourWithNetworkVariables : NetworkBehaviour
     {
         public static int ServerSpawnCount { get; internal set; }
         public static readonly Dictionary<ulong, int> ClientSpawnCount = new Dictionary<ulong, int>();
@@ -442,7 +442,7 @@ namespace Unity.Netcode.RuntimeTests
     /// when variable length safety checks are off NetworkVariables still are updated
     /// properly.
     /// </summary>
-    public class NetworkBehaviourWithOwnerNetworkVariables : NetworkBehaviour
+    internal class NetworkBehaviourWithOwnerNetworkVariables : NetworkBehaviour
     {
         private NetworkVariableWritePermission m_NetworkVariableWritePermission = NetworkVariableWritePermission.Server;
         /// <summary>
@@ -491,7 +491,7 @@ namespace Unity.Netcode.RuntimeTests
     /// and provides a synchronization success version to validate that synchronization
     /// will continue if user synchronization code fails.
     /// </summary>
-    public class NetworkBehaviourSynchronizeFailureComponent : NetworkBehaviour
+    internal class NetworkBehaviourSynchronizeFailureComponent : NetworkBehaviour
     {
         public static int NumberOfFailureTypes { get; internal set; }
         public static int ServerSpawnCount { get; internal set; }
@@ -661,11 +661,11 @@ namespace Unity.Netcode.RuntimeTests
         }
     }
 
-    public class NetworkBehaviourOnSynchronizeComponent : NetworkBehaviour
+    internal class NetworkBehaviourOnSynchronizeComponent : NetworkBehaviour
     {
         public SomeCustomSerializationData CustomSerializationData = new SomeCustomSerializationData();
 
-        public struct SomeCustomSerializationData : INetworkSerializable
+        internal struct SomeCustomSerializationData : INetworkSerializable
         {
             public uint Value1;
             public bool Value2;