From 38db0c22aee89e356babf6137085a8e942c79c8f Mon Sep 17 00:00:00 2001
From: praydog <praydog@praydog.com>
Date: Mon, 13 May 2024 04:12:54 -0700
Subject: [PATCH] .NET: Add support for nulling out object fields

---
 csharp-api/REFrameworkNET/Field.cpp | 12 ++++++++++++
 csharp-api/test/Test/Test.cs        |  3 +++
 2 files changed, 15 insertions(+)

diff --git a/csharp-api/REFrameworkNET/Field.cpp b/csharp-api/REFrameworkNET/Field.cpp
index 063e030ac..78d73da59 100644
--- a/csharp-api/REFrameworkNET/Field.cpp
+++ b/csharp-api/REFrameworkNET/Field.cpp
@@ -55,6 +55,18 @@ namespace REFrameworkNET {
         }
 
         if (!field_type->IsValueType()) {
+            if (value == nullptr) {
+                // Lightweight managed object
+                auto originalObject = *(reframework::API::ManagedObject**)data_ptr;
+
+                if (originalObject != nullptr && originalObject->get_ref_count() > 0) {
+                    originalObject->release();
+                }
+
+                *(uintptr_t*)data_ptr = 0;
+                return;
+            }
+
             auto iobject = dynamic_cast<REFrameworkNET::IObject^>(value);
 
             if (iobject != nullptr) {
diff --git a/csharp-api/test/Test/Test.cs b/csharp-api/test/Test/Test.cs
index ab8a52196..5febd6815 100644
--- a/csharp-api/test/Test/Test.cs
+++ b/csharp-api/test/Test/Test.cs
@@ -151,6 +151,9 @@ public static void Entry() {
             var position = transform.get_Position();
 
             REFrameworkNET.API.LogInfo("Player position: " + position.x + " " + position.y + " " + position.z);
+
+            position.y += 5.0f;
+            transform.set_Position(position);
         }
     }