From c12ea8428e0fefd6940b5a6d7e7eff356aa32782 Mon Sep 17 00:00:00 2001
From: Wojciech Figat <wojtek@figat.pl>
Date: Thu, 13 Oct 2022 13:35:59 +0200
Subject: [PATCH] Add `FlaxEngine.Object.FromUnmanagedPtr` for native object
 raw pointer conversion to managed object

---
 Source/Engine/Scripting/Object.cs           | 8 ++++++++
 Source/Engine/Scripting/ScriptingObject.cpp | 9 +++++++++
 2 files changed, 17 insertions(+)

diff --git a/Source/Engine/Scripting/Object.cs b/Source/Engine/Scripting/Object.cs
index b86ed00d8..f35f3fffd 100644
--- a/Source/Engine/Scripting/Object.cs
+++ b/Source/Engine/Scripting/Object.cs
@@ -221,6 +221,14 @@ namespace FlaxEngine
             return obj is Object o ? Internal_GetUnmanagedInterface(o.__unmanagedPtr, type) : IntPtr.Zero;
         }
 
+        /// <summary>
+        /// Gets the managed object from the native object pointer.
+        /// </summary>
+        /// <param name="ptr">The pointer to the unmanaged (native) object.</param>
+        /// <returns>The object.</returns>
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public static extern Object FromUnmanagedPtr(IntPtr ptr);
+
         /// <inheritdoc />
         public override int GetHashCode()
         {
diff --git a/Source/Engine/Scripting/ScriptingObject.cpp b/Source/Engine/Scripting/ScriptingObject.cpp
index 8075aa67c..ee3dfc438 100644
--- a/Source/Engine/Scripting/ScriptingObject.cpp
+++ b/Source/Engine/Scripting/ScriptingObject.cpp
@@ -727,6 +727,14 @@ public:
         return nullptr;
     }
 
+    static MonoObject* FromUnmanagedPtr(ScriptingObject* obj)
+    {
+        MonoObject* result = nullptr;
+        if (obj)
+            result = obj->GetOrCreateManagedInstance();
+        return result;
+    }
+
     static void InitRuntime()
     {
         ADD_INTERNAL_CALL("FlaxEngine.Object::Internal_Create1", &Create1);
@@ -739,6 +747,7 @@ public:
         ADD_INTERNAL_CALL("FlaxEngine.Object::Internal_TryFindObject", &TryFindObject);
         ADD_INTERNAL_CALL("FlaxEngine.Object::Internal_ChangeID", &ChangeID);
         ADD_INTERNAL_CALL("FlaxEngine.Object::Internal_GetUnmanagedInterface", &GetUnmanagedInterface);
+        ADD_INTERNAL_CALL("FlaxEngine.Object::FromUnmanagedPtr", &FromUnmanagedPtr);
     }
 
 #else