From 6929a91312e9cb281ca1a42c097b20a64dd31d32 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Fri, 29 Mar 2024 13:03:38 +0100
Subject: [PATCH] Add support for manually dirtying objects that use
 `ReplicationFPS < 0` for manual-only replication

---
 .../Networking/NetworkReplicationHierarchy.cpp  | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/Source/Engine/Networking/NetworkReplicationHierarchy.cpp b/Source/Engine/Networking/NetworkReplicationHierarchy.cpp
index e3ee09829..224ee9f31 100644
--- a/Source/Engine/Networking/NetworkReplicationHierarchy.cpp
+++ b/Source/Engine/Networking/NetworkReplicationHierarchy.cpp
@@ -80,7 +80,16 @@ bool NetworkReplicationNode::DirtyObject(ScriptingObject* obj)
     if (index != -1)
     {
         NetworkReplicationHierarchyObject& e = Objects[index];
-        e.ReplicationUpdatesLeft = 0;
+        if (e.ReplicationFPS < -ZeroTolerance) // < 0
+        {
+            // Indicate for manual sync (see logic in Update)
+            e.ReplicationUpdatesLeft = 1;
+        }
+        else
+        {
+            // Replicate it next frame
+            e.ReplicationUpdatesLeft = 0;
+        }
     }
     return index != -1;
 }
@@ -93,6 +102,12 @@ void NetworkReplicationNode::Update(NetworkReplicationHierarchyUpdateResult* res
     {
         if (obj.ReplicationFPS < -ZeroTolerance) // < 0
         {
+            if (obj.ReplicationUpdatesLeft)
+            {
+                // Marked as dirty to sync manually
+                obj.ReplicationUpdatesLeft = 0;
+                result->AddObject(obj.Object);
+            }
             continue;
         }
         else if (obj.ReplicationFPS < ZeroTolerance) // == 0