chore: workaround IEditorOnly objects being deleted too soon

Packages/nadena.dev.modular-avatar/Editor/PreventStripTagObjects.cs

@@ -0,0 +1,59 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using UnityEditor;
+using UnityEngine;
+using VRC.SDKBase;
+using VRC.SDKBase.Editor.BuildPipeline;
+
+namespace nadena.dev.modular_avatar.core.editor
+{
+    /// <summary>
+    /// See https://feedback.vrchat.com/sdk-bug-reports/p/ieditoronly-components-should-be-destroyed-late-in-the-build-process
+    /// </summary>
+    [InitializeOnLoad]
+    internal static class PreventStripTagObjects
+    {
+        static PreventStripTagObjects()
+        {
+            EditorApplication.delayCall += () =>
+            {
+                var f_callbacks = typeof(VRCBuildPipelineCallbacks).GetField("_preprocessAvatarCallbacks",
+                    BindingFlags.Static | BindingFlags.NonPublic);
+                var callbacks = (List<IVRCSDKPreprocessAvatarCallback>) f_callbacks.GetValue(null);
+
+                var filteredCallbacks = callbacks.Where(c => !(c is RemoveAvatarEditorOnly)).ToList();
+
+                f_callbacks.SetValue(null, filteredCallbacks);
+            };
+        }
+    }
+
+    internal class ReplacementRemoveAvatarEditorOnly : IVRCSDKPreprocessAvatarCallback
+    {
+        public int callbackOrder => -1024;
+
+        public bool OnPreprocessAvatar(GameObject avatarGameObject)
+        {
+            foreach (var xform in avatarGameObject.GetComponentsInChildren<Transform>(true))
+            {
+                if (xform != null && xform.CompareTag("EditorOnly"))
+                {
+                    Object.DestroyImmediate(xform.gameObject);
+                }
+            }
+
+            foreach (var editoronly in avatarGameObject.GetComponentsInChildren<IEditorOnly>(true))
+            {
+                if (editoronly == null || editoronly is AvatarTagComponent)
+                {
+                    continue;
+                }
+
+                Object.DestroyImmediate((Component) editoronly);
+            }
+
+            return true;
+        }
+    }
+}

Packages/nadena.dev.modular-avatar/Editor/PreventStripTagObjects.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: eb8f842fbf1e4efdaf940eaf12cbbbb1
+timeCreated: 1681553175