com.unity.netcode.gameobjects@1.7.0

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).

## [1.7.0] - 2023-10-11

### Added

- exposed NetworkObject.GetNetworkBehaviourAtOrderIndex as a public API (#2724)
- Added context menu tool that provides users with the ability to quickly update the GlobalObjectIdHash value for all in-scene placed prefab instances that were created prior to adding a NetworkObject component to it. (#2707)
- Added methods NetworkManager.SetPeerMTU and NetworkManager.GetPeerMTU to be able to set MTU sizes per-peer (#2676)
- Added `GenerateSerializationForGenericParameterAttribute`, which can be applied to user-created Network Variable types to ensure the codegen generates serialization for the generic types they wrap. (#2694)
- Added `GenerateSerializationForTypeAttribute`, which can be applied to any class or method to ensure the codegen generates serialization for the specific provided type. (#2694)
- Exposed `NetworkVariableSerialization<T>.Read`, `NetworkVariableSerialization<T>.Write`, `NetworkVariableSerialization<T>.AreEqual`, and `NetworkVariableSerialization<T>.Duplicate` to further support the creation of user-created network variables by allowing users to access the generated serialization methods and serialize generic types efficiently without boxing. (#2694)
- Added `NetworkVariableBase.MarkNetworkBehaviourDirty` so that user-created network variable types can mark their containing `NetworkBehaviour` to be processed by the update loop. (#2694)

### Fixed

- Fixed issue where the server side `NetworkSceneManager` instance was not adding the currently active scene to its list of scenes loaded. (#2723)
- Generic NetworkBehaviour types no longer result in compile errors or runtime errors (#2720)
- Rpcs within Generic NetworkBehaviour types can now serialize parameters of the class's generic types (but may not have generic types of their own) (#2720)
- Errors are no longer thrown when entering play mode with domain reload disabled (#2720)
- NetworkSpawn is now correctly called each time when entering play mode with scene reload disabled (#2720)
- NetworkVariables of non-integer types will no longer break the inspector (#2714)
- NetworkVariables with NonSerializedAttribute will not appear in the inspector (#2714)
- Fixed issue where `UnityTransport` would attempt to establish WebSocket connections even if using UDP/DTLS Relay allocations when the build target was WebGL. This only applied to working in the editor since UDP/DTLS can't work in the browser. (#2695)
- Fixed issue where a `NetworkBehaviour` component's `OnNetworkDespawn` was not being invoked on the host-server side for an in-scene placed `NetworkObject` when a scene was unloaded (during a scene transition) and the `NetworkBehaviour` component was positioned/ordered before the `NetworkObject` component. (#2685)
- Fixed issue where `SpawnWithObservers` was not being honored when `NetworkConfig.EnableSceneManagement` was disabled. (#2682)
- Fixed issue where `NetworkAnimator` was not internally tracking changes to layer weights which prevented proper layer weight synchronization back to the original layer weight value. (#2674)
- Fixed "writing past the end of the buffer" error when calling ResetDirty() on managed network variables that are larger than 256 bytes when serialized. (#2670)
- Fixed issue where generation of the `DefaultNetworkPrefabs` asset was not enabled by default. (#2662)
- Fixed issue where the `GlobalObjectIdHash` value could be updated but the asset not marked as dirty. (#2662)
- Fixed issue where the `GlobalObjectIdHash` value of a (network) prefab asset could be assigned an incorrect value when editing the prefab in a temporary scene. (#2662)
- Fixed issue where the `GlobalObjectIdHash` value generated after creating a (network) prefab from an object constructed within the scene would not be the correct final value in a stand alone build. (#2662)

### Changed

- Updated dependency on `com.unity.transport` to version 1.4.0. (#2716)

Tests/Runtime/NetworkVariableTests.cs

@@ -50,6 +50,85 @@ namespace Unity.Netcode.RuntimeTests
         }
     }
 
+    internal struct TypeReferencedOnlyInCustomSerialization1 : INetworkSerializeByMemcpy
+    {
+        public int I;
+    }
+
+    internal struct TypeReferencedOnlyInCustomSerialization2 : INetworkSerializeByMemcpy
+    {
+        public int I;
+    }
+
+    internal struct TypeReferencedOnlyInCustomSerialization3 : INetworkSerializeByMemcpy
+    {
+        public int I;
+    }
+
+    internal struct TypeReferencedOnlyInCustomSerialization4 : INetworkSerializeByMemcpy
+    {
+        public int I;
+    }
+
+    internal struct TypeReferencedOnlyInCustomSerialization5 : INetworkSerializeByMemcpy
+    {
+        public int I;
+    }
+
+    internal struct TypeReferencedOnlyInCustomSerialization6 : INetworkSerializeByMemcpy
+    {
+        public int I;
+    }
+
+    // Both T and U are serializable
+    [GenerateSerializationForGenericParameter(0)]
+    [GenerateSerializationForGenericParameter(1)]
+    internal class CustomSerializableClass<TSerializableType1, TSerializableType2>
+    {
+
+    }
+
+    // Only U is serializable
+    [GenerateSerializationForGenericParameter(1)]
+    internal class CustomSerializableBaseClass<TUnserializableType, TSerializableType>
+    {
+
+    }
+
+    // T is serializable, passes TypeReferencedOnlyInCustomSerialization3 as U to the subclass, making it serializable
+    [GenerateSerializationForGenericParameter(0)]
+    internal class CustomSerializableSubclass<TSerializableType> : CustomSerializableBaseClass<TSerializableType, TypeReferencedOnlyInCustomSerialization3>
+    {
+
+    }
+
+    // T is serializable, passes TypeReferencedOnlyInCustomSerialization3 as U to the subclass, making it serializable
+    [GenerateSerializationForGenericParameter(0)]
+    internal class CustomSerializableSubclassWithNativeArray<TSerializableType> : CustomSerializableBaseClass<TSerializableType, NativeArray<TypeReferencedOnlyInCustomSerialization3>>
+    {
+
+    }
+
+    internal class CustomGenericSerializationTestBehaviour : NetworkBehaviour
+    {
+        public CustomSerializableClass<TypeReferencedOnlyInCustomSerialization1, TypeReferencedOnlyInCustomSerialization2> Value1;
+        public CustomSerializableClass<NativeArray<TypeReferencedOnlyInCustomSerialization1>, NativeArray<TypeReferencedOnlyInCustomSerialization2>> Value2;
+        public CustomSerializableSubclass<TypeReferencedOnlyInCustomSerialization4> Value3;
+        public CustomSerializableSubclassWithNativeArray<NativeArray<TypeReferencedOnlyInCustomSerialization4>> Value4;
+    }
+
+    [GenerateSerializationForType(typeof(TypeReferencedOnlyInCustomSerialization5))]
+    [GenerateSerializationForType(typeof(NativeArray<TypeReferencedOnlyInCustomSerialization5>))]
+    internal struct SomeRandomStruct
+    {
+        [GenerateSerializationForType(typeof(TypeReferencedOnlyInCustomSerialization6))]
+        [GenerateSerializationForType(typeof(NativeArray<TypeReferencedOnlyInCustomSerialization6>))]
+        public void Foo()
+        {
+
+        }
+    }
+
     public struct TemplatedValueOnlyReferencedByNetworkVariableSubclass<T> : INetworkSerializeByMemcpy
         where T : unmanaged
     {
@@ -1329,6 +1408,39 @@ namespace Unity.Netcode.RuntimeTests
             Assert.True(WaitForConditionOrTimeOutWithTimeTravel(VerifyCallback));
         }
 
+        [Test]
+        public void TestCustomGenericSerialization()
+        {
+            // Just verifies that the ILPP codegen initialized these values for this type.
+            Assert.AreEqual(typeof(UnmanagedTypeSerializer<TypeReferencedOnlyInCustomSerialization1>), NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization1>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedTypeSerializer<TypeReferencedOnlyInCustomSerialization2>), NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization2>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedTypeSerializer<TypeReferencedOnlyInCustomSerialization3>), NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization3>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedTypeSerializer<TypeReferencedOnlyInCustomSerialization4>), NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization4>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedTypeSerializer<TypeReferencedOnlyInCustomSerialization5>), NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization5>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedTypeSerializer<TypeReferencedOnlyInCustomSerialization6>), NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization6>.Serializer.GetType());
+            Assert.IsNotNull(NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization1>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization2>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization3>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization4>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization5>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<TypeReferencedOnlyInCustomSerialization6>.AreEqual);
+
+            // Verify no issues with generic values...
+
+            Assert.AreEqual(typeof(UnmanagedArraySerializer<TypeReferencedOnlyInCustomSerialization1>), NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization1>>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedArraySerializer<TypeReferencedOnlyInCustomSerialization2>), NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization2>>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedArraySerializer<TypeReferencedOnlyInCustomSerialization3>), NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization3>>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedArraySerializer<TypeReferencedOnlyInCustomSerialization4>), NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization4>>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedArraySerializer<TypeReferencedOnlyInCustomSerialization5>), NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization5>>.Serializer.GetType());
+            Assert.AreEqual(typeof(UnmanagedArraySerializer<TypeReferencedOnlyInCustomSerialization6>), NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization6>>.Serializer.GetType());
+            Assert.IsNotNull(NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization1>>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization2>>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization3>>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization4>>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization5>>.AreEqual);
+            Assert.IsNotNull(NetworkVariableSerialization<NativeArray<TypeReferencedOnlyInCustomSerialization6>>.AreEqual);
+        }
+
         [Test]
         public void TestUnsupportedManagedTypesThrowExceptions()
         {