From fb650dbd52fb0b33e9a0ac59903e76229a38e811 Mon Sep 17 00:00:00 2001
From: Nick Fisher <nick.fisher@avinium.com>
Date: Sat, 30 Nov 2024 14:01:01 +0800
Subject: [PATCH] allow null parent to setParent

---
 .../native/src/c_api/TTransformManager.cpp    | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/thermion_dart/native/src/c_api/TTransformManager.cpp b/thermion_dart/native/src/c_api/TTransformManager.cpp
index f8b862d5..9dee162c 100644
--- a/thermion_dart/native/src/c_api/TTransformManager.cpp
+++ b/thermion_dart/native/src/c_api/TTransformManager.cpp
@@ -81,20 +81,30 @@ extern "C"
         const auto child = Entity::import(childId);
         const auto parent = Entity::import(parentId);
 
-        const auto &parentInstance = tm->getInstance(parent);
+
         const auto &childInstance = tm->getInstance(child);
 
+        if (!childInstance.isValid())
+        {
+            Log("Child instance is not valid");
+            return;
+        }
+
+        if(parent.isNull()) {
+            Log("Unparenting child instance");
+            tm->setParent(childInstance, TransformManager::Instance());
+            return;
+        }
+
+        const auto &parentInstance = tm->getInstance(parent);
+
         if (!parentInstance.isValid())
         {
             Log("Parent instance is not valid");
             return;
         }
 
-        if (!childInstance.isValid())
-        {
-            Log("Child instance is not valid");
-            return;
-        }
+
 
         if (preserveScaling)
         {