Fixed Inspector editors rendered together with [HideInInspector] for …

…the whole class. Unity 2022.1 and later behaves strange when hideFlags is changed in the editor OnEnable.

AGXUnity/AttachmentPair.cs

@@ -197,6 +197,11 @@ protected override bool Initialize()
       return true;
     }
 
+    protected virtual void Reset()
+    {
+      hideFlags |= HideFlags.HideInInspector;
+    }
+
     private AttachmentPair()
     {
     }

AGXUnity/ElementaryConstraint.cs

@@ -181,5 +181,10 @@ protected override void OnDestroy()
 
       base.OnDestroy();
     }
+
+    protected virtual void Reset()
+    {
+      hideFlags |= HideFlags.HideInInspector;
+    }
   }
 }

AGXUnity/MassProperties.cs

@@ -254,6 +254,11 @@ protected override bool Initialize()
       return true;
     }
 
+    protected virtual void Reset()
+    {
+      hideFlags |= HideFlags.HideInInspector;
+    }
+
     /// <summary>
     /// Finds the native rigid body instance this mass properties belongs to.
     /// </summary>

AGXUnity/Route.cs

@@ -181,6 +181,11 @@ protected override void OnDestroy()
       base.OnDestroy();
     }
 
+    protected virtual void Reset()
+    {
+      hideFlags |= HideFlags.HideInInspector;
+    }
+
     private bool TryInsertAtIndex( int index, T node )
     {
       // According to List documentation having index == m_nodes.Count is

AGXUnity/Utils/OnSelectionProxy.cs

@@ -20,5 +20,10 @@ public ScriptComponent Component
       get { return m_component; }
       set { m_component = value; }
     }
+
+    protected virtual void Reset()
+    {
+      hideFlags |= HideFlags.HideInInspector;
+    }
   }
 }

Editor/AGXUnityEditor/InspectorEditor.cs

@@ -200,8 +200,15 @@ private void OnEnable()
       m_numTargetGameObjectsTargetComponents = m_targetGameObjects.Sum( go => go.GetComponents( m_targetType ).Length );
 
       // Entire class/component marked as hidden - enable "hide in inspector".
-      if ( this.target.GetType().GetCustomAttributes( typeof( HideInInspector ), false ).Length > 0 )
-        this.target.hideFlags |= HideFlags.HideInInspector;
+      // NOTE: This will break Inspector rendering in 2022.1 and later because changing
+      //       hideFlags here results in a destroy of all editors and the editors that
+      //       should be visible are enabled again but never rendered by Unity.
+      // SOLUTION: Add hideFlags |= HideFlags.HideInInspector in Reset method of the class
+      //           that shouldn't be rendered in the Inspector.
+      if ( this.targets.Any( t => !t.hideFlags.HasFlag( HideFlags.HideInInspector ) ) && m_targetType.GetCustomAttribute<HideInInspector>( false ) != null ) {
+        foreach ( var t in this.targets )
+          t.hideFlags |= HideFlags.HideInInspector;
+      }
 
       ToolManager.OnTargetEditorEnable( this.targets, this );
     }