using versions to update instances in property drawer

Editor/ClusterEditor.cs

@@ -22,6 +22,8 @@ namespace NanoBrain.Unity {
         }
 
         public override void OnInspectorGUI() {
+            EditorGUI.BeginChangeCheck();
+
             // Begin horizontal split
             EditorGUILayout.BeginHorizontal();
 
@@ -45,6 +47,16 @@ namespace NanoBrain.Unity {
             EditorGUIUtility.labelWidth = prevLabelWidth;
             EditorGUILayout.EndVertical(); // end right column
             EditorGUILayout.EndHorizontal(); // end split
+
+            if (EditorGUI.EndChangeCheck()) {
+                Undo.RecordObject(target, "Edit ClusterPrefab");
+                SerializedProperty versionProp = serializedObject.FindProperty("version");
+                versionProp.intValue++;
+                serializedObject.ApplyModifiedProperties();
+                EditorUtility.SetDirty(target);
+                Debug.Log($"{name} Prefab changed, version {versionProp.intValue}");
+            }
+
         }
 
         #region Inspector
@@ -78,7 +90,7 @@ namespace NanoBrain.Unity {
                 // Nucleus type
                 System.Type nucleusType = this.view.currentNucleus.GetType();
                 if (nucleusType == typeof(Cluster)) {
-                    Cluster cluster = this.view.currentNucleus as Cluster;                    
+                    Cluster cluster = this.view.currentNucleus as Cluster;
                     GUILayout.Label($"{cluster.prefab.name} {nucleusType.Name}", headerStyle);
                 }
                 else

Editor/Cluster_Drawer.cs

@@ -12,10 +12,6 @@ namespace NanoBrain.Unity {
         static Cluster_Drawer() {
             if (Application.isPlaying)
                 SceneView.duringSceneGui += OnSceneGUI;
-
-            Selection.selectionChanged += OnSelectionChanged;
-            if (currentClusterView != null)
-                currentClusterView.initialized = false;
         }
 
         private const float graphHeight = 500f; // height reserved for the VisualElement
@@ -31,15 +27,16 @@ namespace NanoBrain.Unity {
             SerializedProperty prefabProp = property.FindPropertyRelative(nameof(Cluster.prefab));
             if (prefabProp.objectReferenceValue != null && Cluster_Drawer.currentClusterView.isOpen) {
                 height = graphHeight;
-            } else {
+            }
+            else {
                 // Unclear why this is necessary,
                 // but without this, expanding the graph foldout is not possible
-                height += EditorGUIUtility.singleLineHeight; 
+                height += EditorGUIUtility.singleLineHeight;
             }
             return height;
         }
 
-        private void InitializeCluster(SerializedProperty property, ClusterView clusterView) {
+        private void InstantiateCluster(SerializedProperty property, ClusterView clusterView) {
             if (property == null || property.serializedObject == null || clusterView.initialized)
                 return;
 
@@ -48,9 +45,8 @@ namespace NanoBrain.Unity {
             if (targetObject == null)
                 return;
 
-            // Debug.Log($"Instantiate new Cluster for {targetObject.name}");
+            Debug.Log($"Instantiate new Cluster for {targetObject.name}");
 
-            // This does not work properly yet it seems
             ClusterPrefab clusterPrefab = prefabProp.objectReferenceValue as ClusterPrefab;
             Cluster cluster = new(clusterPrefab);
             object parent = SerializedPropertyUtility.GetParentObjectAndMember(targetObject, property.propertyPath, out var memberInfo, out int outIndex);
@@ -59,11 +55,9 @@ namespace NanoBrain.Unity {
                 EditorUtility.SetDirty(targetObject);
             }
             clusterView.initialized = true;
-
         }
 
         public override void OnGUI(Rect position, SerializedProperty property, GUIContent label) {
-            //Debug.Log(Event.current.type);
             // Not sure if this works properly with multiple Clusters in a single gameObject
             ClusterView clusterView = Cluster_Drawer.currentClusterView;
             if (Cluster_Drawer.currentClusterView == null)
@@ -104,12 +98,12 @@ namespace NanoBrain.Unity {
                     UnityEngine.Object targetObject = property.serializedObject.targetObject;
                     Cluster_Drawer.selectedTarget = targetObject;
 
-                    Cluster cluster = null;
+                    Cluster cluster = SerializedPropertyUtility.GetManagedObjectForProperty(targetObject, property.propertyPath) as Cluster;
-                    if (clusterView.initialized || Application.isPlaying) {
+                    if (cluster.version != cluster.prefab.version) {
-                        cluster = SerializedPropertyUtility.GetManagedObjectForProperty(targetObject, property.propertyPath) as Cluster;
+                        // Debug.Log($"prefab version: {cluster.prefab.version} cluster version: {cluster.version}");
+                        clusterView.initialized = false;
+                        EditorApplication.delayCall += () => InstantiateCluster(property, clusterView);
                     }
-                    else 
-                        EditorApplication.delayCall += () => InitializeCluster(property, clusterView);
 
                     // foldout header rect
                     Rect headerRect = new(fieldRect.x, fieldRect.yMax + 4f, fieldRect.width, EditorGUIUtility.singleLineHeight);
@@ -172,14 +166,6 @@ namespace NanoBrain.Unity {
             }
         }
 
-        private static void OnSelectionChanged() {
-            UnityEngine.Object active = Selection.activeObject;
-            if (active == null)
-                return;
-
-            foreach (ClusterView clusterView in ClusterView.clusterViews.Values)
-                clusterView.initialized = false;
-        }
     }
 
     public static class SerializedPropertyUtility {

Runtime/Scripts/ScriptableObjects/ClusterPrefab.cs

@@ -1,4 +1,3 @@
-using System.Collections.Generic;
 using UnityEngine;
 
 namespace NanoBrain.Unity {
@@ -17,25 +16,43 @@ namespace NanoBrain.Unity {
         //[HideInInspector]
         public int version;
 
-        /// <summary>
+// #if UNITY_EDITOR
-        /// Call this function to ensure that there is at least one nucleus
+//         private bool queuedIncrement = false;
-        /// </summary>
-        /// his is an invariant and should be ensured before the nucleus is used
-        /// because output requires it.
-        // public void EnsureInitialization() {
-        //     this.cluster.prefab = this;
-        //     this.cluster.name = this.name;
-        //     this.cluster.nuclei ??= new List<Nucleus>();
-        //     if (this.cluster.nuclei.Count <= 0)
-        //         new Neuron(this.cluster, "Output"); // Every cluster should have at least 1 neuron
-        //     this.cluster.instanceCount = 1;
-        // }
 
-#if UNITY_EDITOR
+//         private void OnValidate() {
-        private void OnValidate() {
+//             Debug.Log("Validating...");
-            version++;
+//             if (queuedIncrement) {
-        }
+//                 Debug.Log("Re-entry");
-#endif
+//                 return; // avoid re-entrancy
+//             }
+
+//             queuedIncrement = true;
+
+//             // Defer so Unity finishes its internal serialization/validate cycle first
+//             UnityEditor.EditorApplication.update += IncrementVersion;
+//         }
+//         private void IncrementVersion() {
+//             UnityEditor.EditorApplication.update -= IncrementVersion;
+//             Debug.Log("updating version...");
+//             // Ensure object still exists and hasn't been destroyed
+//             if (this == null) {
+//                 queuedIncrement = false;
+//                 return;
+//             }
+
+//             // Record for Undo and mark dirty so change persists
+//             UnityEditor.Undo.RecordObject(this, $"Increment {name} version");
+//             version++;
+//             UnityEditor.EditorUtility.SetDirty(this);
+//             Debug.Log($"{name} Prefab changed, version {version}");
+
+//             // Optional: force Inspector repaint
+//             //UnityEditor.EditorUtility.SetDirty(this);
+//             // clear the flag
+//             queuedIncrement = false;
+
+//         }
+// #endif
     }
 
 }

Samples/Braitenberg/Brains/Braitenberg 1.asset

@@ -17,103 +17,60 @@ MonoBehaviour:
     parent:
       rid: -2
     prefab: {fileID: 11400000}
+    version: 65
+    instances: []
     instanceCount: 1
     nuclei:
-    - rid: 4201949899492425781
+    - rid: 4201950332465446972
-    - rid: 4201949899492425817
+    - rid: 4201950332465446973
+  version: 506
   references:
     version: 2
     RefIds:
     - rid: -2
       type: {class: , ns: , asm: }
-    - rid: 4201949899492425781
+    - rid: 4201950332465446972
       type: {class: Neuron, ns: NanoBrain, asm: Assembly-CSharp}
       data:
         name: Output
         parent:
-          rid: 4201950148723474519
+          rid: 4201950332465446974
         bias: {x: 0, y: 0, z: 1}
         _synapses:
         - neuron:
-            rid: 4201949899492425817
+            rid: 4201950332465446973
           weight: 4
-        combinator: 0
+        combinator: 1
         _activator: 0
-        curve:
-          serializedVersion: 2
-          m_Curve:
-          - serializedVersion: 3
-            time: 0
-            value: 0
-            inSlope: 0
-            outSlope: 1
-            tangentMode: 0
-            weightedMode: 0
-            inWeight: 0
-            outWeight: 0
-          - serializedVersion: 3
-            time: 1000
-            value: 1000
-            inSlope: 1
-            outSlope: 0
-            tangentMode: 0
-            weightedMode: 0
-            inWeight: 0
-            outWeight: 0
-          m_PreInfinity: 2
-          m_PostInfinity: 2
-          m_RotationOrder: 4
-        curveMax: 1
         persistOutput: 0
-        lastUpdate: 19.870863
+        lastUpdate: 35.320103
+        breakOnUpdate: 0
         _receivers: []
-    - rid: 4201949899492425817
+    - rid: 4201950332465446973
       type: {class: Neuron, ns: NanoBrain, asm: Assembly-CSharp}
       data:
         name: Sensor
         parent:
-          rid: 4201950148723474519
+          rid: 4201950332465446974
         bias: {x: 0, y: 0, z: 0}
         _synapses: []
         combinator: 0
         _activator: 0
-        curve:
-          serializedVersion: 2
-          m_Curve:
-          - serializedVersion: 3
-            time: 0
-            value: 0
-            inSlope: 0
-            outSlope: 1
-            tangentMode: 0
-            weightedMode: 0
-            inWeight: 0
-            outWeight: 0
-          - serializedVersion: 3
-            time: 1000
-            value: 1000
-            inSlope: 1
-            outSlope: 0
-            tangentMode: 0
-            weightedMode: 0
-            inWeight: 0
-            outWeight: 0
-          m_PreInfinity: 2
-          m_PostInfinity: 2
-          m_RotationOrder: 4
-        curveMax: 1
         persistOutput: 0
-        lastUpdate: 19.870863
+        lastUpdate: 35.320103
+        breakOnUpdate: 0
         _receivers:
-        - rid: 4201949899492425781
+        - rid: 4201950332465446972
-    - rid: 4201950148723474519
+    - rid: 4201950332465446974
       type: {class: Cluster, ns: NanoBrain, asm: Assembly-CSharp}
       data:
         name: Braitenberg 1
         parent:
           rid: -2
         prefab: {fileID: 11400000}
+        version: 65
+        instances: []
         instanceCount: 1
         nuclei:
-        - rid: 4201949899492425781
+        - rid: 4201950332465446972
-        - rid: 4201949899492425817
+        - rid: 4201950332465446973

Samples/Braitenberg/Brains/Braitenberg 2a.asset

@@ -25,7 +25,7 @@ MonoBehaviour:
     - rid: 4201949899492425817
     - rid: 4201950127862317404
     - rid: 4201950127862317405
-  version: 12
+  version: 21
   references:
     version: 2
     RefIds:

Samples/Braitenberg/Brains/Braitenberg 2b.asset

@@ -25,7 +25,7 @@ MonoBehaviour:
     - rid: 4201949899492425817
     - rid: 4201950127862317404
     - rid: 4201950127862317405
-  version: 3
+  version: 12
   references:
     version: 2
     RefIds:

Samples/Braitenberg/Brains/Braitenberg 3a.asset

@@ -25,7 +25,7 @@ MonoBehaviour:
     - rid: 4201949899492425817
     - rid: 4201950127862317404
     - rid: 4201950127862317405
-  version: 35
+  version: 44
   references:
     version: 2
     RefIds:

Samples/Braitenberg/Brains/Braitenberg 3b.asset

@@ -25,7 +25,7 @@ MonoBehaviour:
     - rid: 4201949899492425817
     - rid: 4201950127862317404
     - rid: 4201950127862317405
-  version: 32
+  version: 41
   references:
     version: 2
     RefIds:

Samples/Braitenberg/Brains/Braitenberg 4a.asset

@@ -29,7 +29,7 @@ MonoBehaviour:
     - rid: 4201950130928877961
     - rid: 4201950130928878008
     - rid: 4201950130928878009
-  version: 2
+  version: 11
   references:
     version: 2
     RefIds:

Samples/Braitenberg/Prefabs/Vehicle 1.prefab

@@ -86,7 +86,7 @@ PrefabInstance:
       objectReference: {fileID: 11400000, guid: c2d142058a073d6fdba2c8fab05834e3, type: 2}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: brain.version
-      value: 8
+      value: 44
       objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: brain.instanceCount
@@ -98,11 +98,11 @@ PrefabInstance:
       objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: 'brain.nuclei.Array.data[0]'
-      value: 4201950310209421437
+      value: 4201950330056344037
       objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: 'brain.nuclei.Array.data[1]'
-      value: 4201950310209421438
+      value: 4201950330056344038
       objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: 'managedReferences[4201950310209421372]'
@@ -128,6 +128,18 @@ PrefabInstance:
       propertyPath: 'managedReferences[4201950310209421439]'
       value: Assembly-CSharp NanoBrain.Cluster
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: 'managedReferences[4201950330056344037]'
+      value: Assembly-CSharp NanoBrain.Neuron
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: 'managedReferences[4201950330056344038]'
+      value: Assembly-CSharp NanoBrain.Neuron
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: 'managedReferences[4201950330056344039]'
+      value: Assembly-CSharp NanoBrain.Cluster
+      objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421372].name
       value: Output
@@ -152,6 +164,18 @@ PrefabInstance:
       propertyPath: managedReferences[4201950310209421439].name
       value: Braitenberg 1
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].name
+      value: Output
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].name
+      value: Sensor
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344039].name
+      value: Braitenberg 1
+      objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421372].bias.x
       value: 0
@@ -232,6 +256,46 @@ PrefabInstance:
       propertyPath: managedReferences[4201950310209421439].prefab
       value: 
       objectReference: {fileID: 11400000, guid: c2d142058a073d6fdba2c8fab05834e3, type: 2}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].bias.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].bias.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].bias.z
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].parent
+      value: 4201950330056344039
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].bias.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].bias.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].bias.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].parent
+      value: 4201950330056344039
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344039].parent
+      value: -2
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344039].prefab
+      value: 
+      objectReference: {fileID: 11400000, guid: c2d142058a073d6fdba2c8fab05834e3, type: 2}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421374].version
       value: 1
@@ -240,6 +304,10 @@ PrefabInstance:
       propertyPath: managedReferences[4201950310209421439].version
       value: 8
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344039].version
+      value: 44
+      objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421372]._activator
       value: 0
@@ -288,6 +356,30 @@ PrefabInstance:
       propertyPath: managedReferences[4201950310209421438].lastUpdate
       value: 305.44333
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037]._activator
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].combinator
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].lastUpdate
+      value: 31.01318
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038]._activator
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].combinator
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].lastUpdate
+      value: 31.01318
+      objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421372].breakOnUpdate
       value: 0
@@ -328,6 +420,26 @@ PrefabInstance:
       propertyPath: managedReferences[4201950310209421439].instanceCount
       value: 1
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].breakOnUpdate
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037].persistOutput
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].breakOnUpdate
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344038].persistOutput
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344039].instanceCount
+      value: 1
+      objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421374].nuclei.Array.size
       value: 2
@@ -336,6 +448,10 @@ PrefabInstance:
       propertyPath: managedReferences[4201950310209421439].nuclei.Array.size
       value: 2
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344039].nuclei.Array.size
+      value: 2
+      objectReference: {fileID: 0}
     - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
       propertyPath: managedReferences[4201950310209421372]._synapses.Array.size
       value: 1
@@ -376,6 +492,26 @@ PrefabInstance:
       propertyPath: 'managedReferences[4201950310209421439].nuclei.Array.data[1]'
       value: 4201950310209421438
       objectReference: {fileID: 0}
+    - target: {fileID: 8280937452374640854, guid: c0398fc7a48853d47acb42e4e3498383, type: 3}
+      propertyPath: managedReferences[4201950330056344037]._synapses.Array.size
+      value: 1
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