Fix MonoBehaviour preview, AnimatorOverrideController clips, and lazy-type GUI filter

UnityRiftGUI/Studio.cs

@@ -368,6 +368,24 @@ public static (string, List<TreeNode>) BuildAssetData()
                                 containers.Add((m_Container.Value, m_Container.Key));
                             }
                             break;
+                        case LazyObject lazyAsset:
+                            // Heavy assets are loaded as placeholders; derive exportability from
+                            // the real ClassIDType so lazy Mesh/AnimationClip/Shader/Font/TextAsset/
+                            // MovieTexture are not dropped from the type filter. Avatar and
+                            // AnimatorController placeholders stay non-exportable.
+                            assetItem.Text = lazyAsset.m_Name;
+                            switch (lazyAsset.type)
+                            {
+                                case ClassIDType.Mesh:
+                                case ClassIDType.AnimationClip:
+                                case ClassIDType.Shader:
+                                case ClassIDType.Font:
+                                case ClassIDType.TextAsset:
+                                case ClassIDType.MovieTexture:
+                                    exportable = true;
+                                    break;
+                            }
+                            break;
                         case NamedObject m_NamedObject:
                             assetItem.Text = m_NamedObject.m_Name;
                             break;
@@ -984,6 +1002,25 @@ private static void SelectAssemblyFolder()
         {
             if (!assemblyLoader.Loaded)
             {
+                // Standalone builds strip MonoBehaviour script fields, so without the game's
+                // assemblies the preview reads only the 32-byte base and logs "Failed to read
+                // type, read 32 bytes but expected N bytes" for every field. Auto-load the Mono
+                // "Managed" folder found next to the loaded files before falling back to the
+                // manual picker. IL2CPP games have no Managed folder, so they still fall through
+                // to the manual "Select Assembly Folder" dialog.
+                var paths = assetsManager.AssetsFileList
+                    .Select(f => f.originalPath ?? f.fullName)
+                    .Where(p => p != null)
+                    .Distinct()
+                    .ToList();
+                var managed = AssemblyLoader.FindManagedFolder(paths);
+                if (managed != null)
+                {
+                    assemblyLoader.Load(managed);
+                    AssembliesLoaded?.Invoke();
+                    return;
+                }
+
                 var openFolderDialog = new OpenFolderDialog();
                 openFolderDialog.Title = "Select Assembly Folder";
                 if (openFolderDialog.ShowDialog() == DialogResult.OK)

UnityRiftUtility/ModelConverter.cs

@@ -305,10 +305,22 @@ private void CollectAnimationClip(Animator m_Animator)
             {
                 AnimatorController m_AnimatorController;
                 var animationList = new List<AnimationClip>();
+                var overrideMap = new Dictionary<AnimationClip, AnimationClip>();
                 if (m_Controller is AnimatorOverrideController overrideController)
                 {
                     if (!overrideController.m_Controller.TryGet(out m_AnimatorController))
                         return;
+                    // The base controller only holds empty template_* placeholder clips; the
+                    // real animation data lives in the override map. Map each original clip to
+                    // its override so we collect the playable clips instead of 0.00s templates.
+                    foreach (var clipOverride in overrideController.m_Clips)
+                    {
+                        if (clipOverride.m_OriginalClip.TryGet(out var originalClip)
+                            && clipOverride.m_OverrideClip.TryGet(out var overrideClip))
+                        {
+                            overrideMap[originalClip] = overrideClip;
+                        }
+                    }
                 }
                 else
                 {
@@ -319,7 +331,9 @@ private void CollectAnimationClip(Animator m_Animator)
                 {
                     if (pptr.TryGet(out var m_AnimationClip))
                     {
-                        animationList.Add(m_AnimationClip);
+                        animationList.Add(overrideMap.TryGetValue(m_AnimationClip, out var overrideClip)
+                            ? overrideClip
+                            : m_AnimationClip);
                     }
                 }
                 animationClipUniqArray = animationList.Distinct(animationClipEqComparer).ToArray();