feat: time mocking (#2472)

* feat: time mocking

* time mocking in NetworkTransformTests

* More mocks.

* Disable LogAllMessages in DeferredMessagingTests

* Standards

* Allow UnityTransport to create its own IRealTimeProvider if no NetworkManager is provided to it.

* XMLDoc updates

* Changed IRealTimeProvider to internal

---------

Co-authored-by: Fatih Mar <mfatihmar@gmail.com>

Author: ShadauxCat

com.unity.netcode.gameobjects/Components/NetworkTransform.cs

@@ -2626,7 +2626,7 @@ protected virtual void Update()
             if (Interpolate)
             {
                 var serverTime = NetworkManager.ServerTime;
-                var cachedDeltaTime = Time.deltaTime;
+                var cachedDeltaTime = NetworkManager.RealTimeProvider.DeltaTime;
                 var cachedServerTime = serverTime.Time;
                 // TODO: Investigate Further
                 // With owner authoritative mode, non-authority clients can lag behind
@@ -2705,4 +2705,3 @@ internal interface INetworkTransformLogStateEntry
         void AddLogEntry(NetworkTransform.NetworkTransformState networkTransformState, ulong targetClient, bool preUpdate = false);
     }
 }
-

com.unity.netcode.gameobjects/Runtime/Core/ComponentFactory.cs

@@ -52,6 +52,8 @@ public static void Deregister<T>()
         public static void SetDefaults()
         {
             SetDefault<IDeferredMessageManager>(networkManager => new DeferredMessageManager(networkManager));
+
+            SetDefault<IRealTimeProvider>(networkManager => new RealTimeProvider());
         }
 
         private static void SetDefault<T>(CreateObjectDelegate creator)

com.unity.netcode.gameobjects/Runtime/Core/NetworkBehaviour.cs

@@ -82,7 +82,7 @@ internal void __endSendServerRpc(ref FastBufferWriter bufferWriter, uint rpcMeth
                 var context = new NetworkContext
                 {
                     SenderId = NetworkManager.ServerClientId,
-                    Timestamp = Time.realtimeSinceStartup,
+                    Timestamp = NetworkManager.RealTimeProvider.RealTimeSinceStartup,
                     SystemOwner = NetworkManager,
                     // header information isn't valid since it's not a real message.
                     // RpcMessage doesn't access this stuff so it's just left empty.
@@ -219,7 +219,7 @@ internal void __endSendClientRpc(ref FastBufferWriter bufferWriter, uint rpcMeth
                 var context = new NetworkContext
                 {
                     SenderId = NetworkManager.ServerClientId,
-                    Timestamp = Time.realtimeSinceStartup,
+                    Timestamp = NetworkManager.RealTimeProvider.RealTimeSinceStartup,
                     SystemOwner = NetworkManager,
                     // header information isn't valid since it's not a real message.
                     // RpcMessage doesn't access this stuff so it's just left empty.

com.unity.netcode.gameobjects/Runtime/Core/NetworkManager.cs

@@ -298,6 +298,8 @@ public GameObject GetNetworkPrefabOverride(GameObject gameObject)
 
         internal IDeferredMessageManager DeferredMessageManager { get; private set; }
 
+        internal IRealTimeProvider RealTimeProvider { get; private set; }
+
         /// <summary>
         /// Gets the CustomMessagingManager for this NetworkManager
         /// </summary>
@@ -753,6 +755,8 @@ internal void Initialize(bool server)
 
             DeferredMessageManager = ComponentFactory.Create<IDeferredMessageManager>(this);
 
+            RealTimeProvider = ComponentFactory.Create<IRealTimeProvider>(this);
+
             CustomMessagingManager = new CustomMessagingManager(this);
 
             SceneManager = new NetworkSceneManager(this);
@@ -1459,7 +1463,7 @@ private void OnNetworkPreUpdate()
             }
 
             // Only update RTT here, server time is updated by time sync messages
-            var reset = NetworkTimeSystem.Advance(Time.unscaledDeltaTime);
+            var reset = NetworkTimeSystem.Advance(RealTimeProvider.UnscaledDeltaTime);
             if (reset)
             {
                 NetworkTickSystem.Reset(NetworkTimeSystem.LocalTime, NetworkTimeSystem.ServerTime);
@@ -1468,7 +1472,7 @@ private void OnNetworkPreUpdate()
 
             if (IsServer == false)
             {
-                NetworkTimeSystem.Sync(NetworkTimeSystem.LastSyncedServerTimeSec + Time.unscaledDeltaTime, NetworkConfig.NetworkTransport.GetCurrentRtt(ServerClientId) / 1000d);
+                NetworkTimeSystem.Sync(NetworkTimeSystem.LastSyncedServerTimeSec + RealTimeProvider.UnscaledDeltaTime, NetworkConfig.NetworkTransport.GetCurrentRtt(ServerClientId) / 1000d);
             }
         }
 
@@ -1554,7 +1558,7 @@ private void SendConnectionRequest()
 
         private IEnumerator ApprovalTimeout(ulong clientId)
         {
-            var timeStarted = IsServer ? LocalTime.TimeAsFloat : Time.realtimeSinceStartup;
+            var timeStarted = IsServer ? LocalTime.TimeAsFloat : RealTimeProvider.RealTimeSinceStartup;
             var timedOut = false;
             var connectionApproved = false;
             var connectionNotApproved = false;
@@ -1564,7 +1568,7 @@ private IEnumerator ApprovalTimeout(ulong clientId)
             {
                 yield return null;
                 // Check if we timed out
-                timedOut = timeoutMarker < (IsServer ? LocalTime.TimeAsFloat : Time.realtimeSinceStartup);
+                timedOut = timeoutMarker < (IsServer ? LocalTime.TimeAsFloat : RealTimeProvider.RealTimeSinceStartup);
 
                 if (IsServer)
                 {

com.unity.netcode.gameobjects/Runtime/Core/NetworkUpdateLoop.cs

@@ -167,7 +167,7 @@ public static void UnregisterNetworkUpdate(this INetworkUpdateSystem updateSyste
         /// </summary>
         public static NetworkUpdateStage UpdateStage;
 
-        private static void RunNetworkUpdateStage(NetworkUpdateStage updateStage)
+        internal static void RunNetworkUpdateStage(NetworkUpdateStage updateStage)
         {
             UpdateStage = updateStage;
 

com.unity.netcode.gameobjects/Runtime/Messaging/DeferredMessageManager.cs

@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using Unity.Collections;
-using Time = UnityEngine.Time;
 
 namespace Unity.Netcode
 {
@@ -49,7 +48,7 @@ public virtual unsafe void DeferMessage(IDeferredMessageManager.TriggerType trig
             {
                 triggerInfo = new TriggerInfo
                 {
-                    Expiry = Time.realtimeSinceStartup + m_NetworkManager.NetworkConfig.SpawnTimeout,
+                    Expiry = m_NetworkManager.RealTimeProvider.RealTimeSinceStartup + m_NetworkManager.NetworkConfig.SpawnTimeout,
                     TriggerData = new NativeList<TriggerData>(Allocator.Persistent)
                 };
                 triggers[key] = triggerInfo;
@@ -77,7 +76,7 @@ public virtual unsafe void CleanupStaleTriggers()
                 int index = 0;
                 foreach (var kvp2 in kvp.Value)
                 {
-                    if (kvp2.Value.Expiry < Time.realtimeSinceStartup)
+                    if (kvp2.Value.Expiry < m_NetworkManager.RealTimeProvider.RealTimeSinceStartup)
                     {
                         staleKeys[index++] = kvp2.Key;
                         PurgeTrigger(kvp.Key, kvp2.Key, kvp2.Value);

com.unity.netcode.gameobjects/Runtime/SceneManagement/SceneEventProgress.cs

@@ -83,7 +83,7 @@ internal class SceneEventProgress
         /// </summary>
         internal bool HasTimedOut()
         {
-            return WhenSceneEventHasTimedOut <= Time.realtimeSinceStartup;
+            return WhenSceneEventHasTimedOut <= m_NetworkManager.RealTimeProvider.RealTimeSinceStartup;
         }
 
         /// <summary>
@@ -164,7 +164,7 @@ internal SceneEventProgress(NetworkManager networkManager, SceneEventProgressSta
                         ClientsProcessingSceneEvent.Add(connectedClientId, false);
                     }
 
-                    WhenSceneEventHasTimedOut = Time.realtimeSinceStartup + networkManager.NetworkConfig.LoadSceneTimeOut;
+                    WhenSceneEventHasTimedOut = networkManager.RealTimeProvider.RealTimeSinceStartup + networkManager.NetworkConfig.LoadSceneTimeOut;
                     m_TimeOutCoroutine = m_NetworkManager.StartCoroutine(TimeOutSceneEventProgress());
                 }
             }

com.unity.netcode.gameobjects/Runtime/Spawning/NetworkSpawnManager.cs

@@ -154,7 +154,7 @@ internal NetworkSpawnManager(NetworkManager networkManager)
 
         internal ulong GetNetworkObjectId()
         {
-            if (ReleasedNetworkObjectIds.Count > 0 && NetworkManager.NetworkConfig.RecycleNetworkIds && (Time.unscaledTime - ReleasedNetworkObjectIds.Peek().ReleaseTime) >= NetworkManager.NetworkConfig.NetworkIdRecycleDelay)
+            if (ReleasedNetworkObjectIds.Count > 0 && NetworkManager.NetworkConfig.RecycleNetworkIds && (NetworkManager.RealTimeProvider.UnscaledTime - ReleasedNetworkObjectIds.Peek().ReleaseTime) >= NetworkManager.NetworkConfig.NetworkIdRecycleDelay)
             {
                 return ReleasedNetworkObjectIds.Dequeue().NetworkId;
             }
@@ -857,7 +857,7 @@ internal void OnDespawnObject(NetworkObject networkObject, bool destroyGameObjec
                     ReleasedNetworkObjectIds.Enqueue(new ReleasedNetworkId()
                     {
                         NetworkId = networkObject.NetworkObjectId,
-                        ReleaseTime = Time.unscaledTime
+                        ReleaseTime = NetworkManager.RealTimeProvider.UnscaledTime
                     });
                 }
 

com.unity.netcode.gameobjects/Runtime/Timing/IRealTimeProvider.cs

@@ -0,0 +1,10 @@
+namespace Unity.Netcode
+{
+    internal interface IRealTimeProvider
+    {
+        float RealTimeSinceStartup { get; }
+        float UnscaledTime { get; }
+        float UnscaledDeltaTime { get; }
+        float DeltaTime { get; }
+    }
+}