From 3f4885e7072c338a71469ee65dbf5033b438f00e Mon Sep 17 00:00:00 2001
From: bd_ <bdunderscore@fushizen.net>
Date: Sat, 10 Sep 2022 09:08:16 -0700
Subject: [PATCH] Avoid scary errors when entering play mode

As part of our hook processing, we destroy modular-avatar components;
however, when entering play mode (without av3emu), these components
might be prefab assets. To avoid scary unity errors, unpack these prefabs
when entering play mode.
---
 .../Editor/ApplyOnPlay.cs                       | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Packages/net.fushizen.modular-avatar/Editor/ApplyOnPlay.cs b/Packages/net.fushizen.modular-avatar/Editor/ApplyOnPlay.cs
index 906bc297..1a47d935 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/ApplyOnPlay.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/ApplyOnPlay.cs
@@ -23,6 +23,7 @@
  */
 
 using UnityEditor;
+using UnityEngine;
 using UnityEngine.SceneManagement;
 using VRC.SDK3.Avatars.Components;
 using VRC.SDKBase.Editor.BuildPipeline;
@@ -58,11 +59,27 @@ namespace net.fushizen.modular_avatar.core.editor
                     {
                         if (avatar.GetComponentsInChildren<AvatarTagComponent>(true).Length > 0)
                         {
+                            UnpackPrefabsCompletely(avatar.gameObject);
                             VRCBuildPipelineCallbacks.OnPreprocessAvatar(avatar.gameObject);
                         }
                     }
                 }
             }
         }
+
+        private static void UnpackPrefabsCompletely(GameObject obj)
+        {
+            if (PrefabUtility.IsAnyPrefabInstanceRoot(obj))
+            {
+                PrefabUtility.UnpackPrefabInstance(obj, PrefabUnpackMode.Completely, InteractionMode.AutomatedAction);
+            }
+            else
+            {
+                foreach (Transform child in obj.transform)
+                {
+                    UnpackPrefabsCompletely(child.gameObject);
+                }
+            }
+        }
     }
 }
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