From e554b7f531b5822aa04af94b9cbd1f0c67d3bb30 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Wed, 13 Apr 2022 21:34:13 +0200
Subject: [PATCH] Move `Actor.DestroyChildren` to C++

---
 Source/Engine/Level/Actor.cpp | 11 +++++++++++
 Source/Engine/Level/Actor.cs  | 17 -----------------
 Source/Engine/Level/Actor.h   |  6 ++++++
 3 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/Source/Engine/Level/Actor.cpp b/Source/Engine/Level/Actor.cpp
index f58dfd587..5ca9e957a 100644
--- a/Source/Engine/Level/Actor.cpp
+++ b/Source/Engine/Level/Actor.cpp
@@ -418,6 +418,17 @@ Array<Actor*> Actor::GetChildren(const MClass* type) const
     return result;
 }
 
+void Actor::DestroyChildren(float timeLeft)
+{
+    Array<Actor*> children = Children;
+    const bool useGameTime = timeLeft > ZeroTolerance;
+    for (Actor* child : children)
+    {
+        child->SetParent(nullptr, false, false);
+        child->DeleteObject(timeLeft, useGameTime);
+    }
+}
+
 bool Actor::HasTag(const StringView& tag) const
 {
     return HasTag() && tag == Level::Tags[_tag];
diff --git a/Source/Engine/Level/Actor.cs b/Source/Engine/Level/Actor.cs
index 077ec346e..91f56798d 100644
--- a/Source/Engine/Level/Actor.cs
+++ b/Source/Engine/Level/Actor.cs
@@ -296,23 +296,6 @@ namespace FlaxEngine
             return output;
         }
 
-        /// <summary>
-        /// Destroys the children. Calls Object.Destroy on every child actor and unlink them for the parent.
-        /// </summary>
-        /// <param name="timeLeft">The time left to destroy object (in seconds).</param>
-        [NoAnimate]
-        public void DestroyChildren(float timeLeft = 0.0f)
-        {
-            if (ChildrenCount == 0)
-                return;
-            Actor[] children = Children;
-            for (var i = 0; i < children.Length; i++)
-            {
-                children[i].Parent = null;
-                Destroy(children[i], timeLeft);
-            }
-        }
-
         /// <summary>
         /// Gets the matrix that transforms a point from the world space to local space of the actor.
         /// </summary>
diff --git a/Source/Engine/Level/Actor.h b/Source/Engine/Level/Actor.h
index b31654c72..85dccfe13 100644
--- a/Source/Engine/Level/Actor.h
+++ b/Source/Engine/Level/Actor.h
@@ -242,6 +242,12 @@ public:
         return result;
     }
 
+    /// <summary>
+    /// Destroys the children. Calls Object.Destroy on every child actor and unlinks them for this actor.
+    /// </summary>
+    /// <param name="timeLeft">The time left to destroy object (in seconds).</param>
+    API_FUNCTION(Attributes="NoAnimate") void DestroyChildren(float timeLeft = 0.0f);
+
 public:
 
     /// <summary>