From f0332cd36e764436621c25b21c48a99fc1a758f0 Mon Sep 17 00:00:00 2001
From: yokra9 <53964890+yokra9@users.noreply.github.com>
Date: Wed, 18 Jan 2023 19:25:36 +0900
Subject: [PATCH] Fix UnassignedReferenceException when `rootTransform` of
 `PhysBone` is none

---
 Editor/VRoidAvatar.cs | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/Editor/VRoidAvatar.cs b/Editor/VRoidAvatar.cs
index 2446ac8..9c8244c 100644
--- a/Editor/VRoidAvatar.cs
+++ b/Editor/VRoidAvatar.cs
@@ -63,7 +63,7 @@ public class VRoidAvatar
         //// Expressions
         public bool expressionsMenu = true;
         public bool expressionParameters = true;
-        
+
         // Pipeline Manager
         public bool blueprintId = true;
 
@@ -178,8 +178,8 @@ public void CopyToTarget(GameObject targetObject)
             {
                 errors.Add("コピー先アバターにVRCAvatarDescriptorコンポーネントがないためコピーできませんでした。\n VRCAvatarDescriptor配下の項目のチェックを外すか、コピー先アバターにコンポーネントを追加してください");
             }
-            
-            if(ShouldCopyVRCAvatarDescripter() && sourceAvatarDescriptor != null && targetAvatarDescriptor != null)
+
+            if (ShouldCopyVRCAvatarDescripter() && sourceAvatarDescriptor != null && targetAvatarDescriptor != null)
             {
                 if (viewPosition)
                 {
@@ -374,13 +374,16 @@ public void CopyToTarget(GameObject targetObject)
                 {
                     if (avatarMode == 0)
                     {
-                        if (checkExclutionPhysBoneContain(phy.rootTransform.name))
-                        {
-                            continue;
-                        }
-                        else if (!checkPhysBoneContain(phy.rootTransform.name) && !physBones_other)
+                        if (phy.rootTransform != null)
                         {
-                            continue;
+                            if (checkExclutionPhysBoneContain(phy.rootTransform.name))
+                            {
+                                continue;
+                            }
+                            else if (!checkPhysBoneContain(phy.rootTransform.name) && !physBones_other)
+                            {
+                                continue;
+                            }
                         }
                     }
                     ComponentUtility.CopyComponent(phy);
@@ -390,7 +393,10 @@ public void CopyToTarget(GameObject targetObject)
                     VRCPhysBone[] p = targetObj.GetComponents<VRCPhysBone>();
                     VRCPhysBone newPhysBone = p[p.Length - 1];
 
-                    newPhysBone.rootTransform = targetObject.transform.Find(newPhysBone.rootTransform.gameObject.GetFullPath()).gameObject.transform;
+                    if (phy.rootTransform != null)
+                    {
+                        newPhysBone.rootTransform = targetObject.transform.Find(newPhysBone.rootTransform.gameObject.GetFullPath()).gameObject.transform;
+                    }
 
                     List<VRCPhysBoneColliderBase> new_coliders = new List<VRCPhysBoneColliderBase>();
                     foreach (var tarcol in newPhysBone.colliders)