Minor bugfixes and cleanup

Changed:
 - Private fields with [Serializable] attributes are now also shown
 - Nodes can now only be dragged by the title
 - Output text alignment
Fixed:
 - NodeEditorWindow fields not resetting to null
 - Field editors

Examples/Nodes/Editor/MathNodeEditor.cs

@@ -7,6 +7,5 @@ public class AddNodeEditor : NodeEditor {
 
     public override void OnNodeGUI() {
         GUILayout.Label("YEAH CUSTOM");
-        base.OnNodeGUI();
     }
 }

Scripts/Editor/NodeEditor.cs

@@ -16,7 +16,8 @@ public class NodeEditor {
         DrawDefaultNodeGUI();
     }
 
-    public void DrawDefaultNodeGUI() {
+    /// <summary> Draws standard field editors for all public fields </summary>
+    protected void DrawDefaultNodeGUI() {
         FieldInfo[] fields = GetInspectorFields(target);
         for (int i = 0; i < fields.Length; i++) {
             Type fieldType = fields[i].FieldType;
@@ -58,16 +59,18 @@ public class NodeEditor {
                 fieldValue = EditorGUILayout.Vector2Field(fieldName, (Vector2)fieldValue);
             }
             else if (fieldType == typeof(Vector3)) {
-                fieldValue = EditorGUILayout.Vector2Field(fieldName, (Vector3)fieldValue);
+                fieldValue = EditorGUILayout.Vector3Field(new GUIContent(fieldName), (Vector3)fieldValue);
             }
             else if (fieldType == typeof(Vector4)) {
-                fieldValue = EditorGUILayout.Vector2Field(fieldName, (Vector4)fieldValue);
+                fieldValue = EditorGUILayout.Vector4Field(fieldName, (Vector4)fieldValue);
             }
             else if (fieldType == typeof(Color)) {
                 fieldValue = EditorGUILayout.ColorField(fieldName, (Color)fieldValue);
             }
             else if (fieldType == typeof(AnimationCurve)) {
-                fieldValue = EditorGUILayout.CurveField(fieldName, fieldValue != null ? (AnimationCurve)fieldValue : new AnimationCurve());
+                AnimationCurve curve = fieldValue != null ? (AnimationCurve)fieldValue : new AnimationCurve();
+                curve = EditorGUILayout.CurveField(fieldName, curve);
+                if (fieldValue != curve) fields[i].SetValue(target, curve);
             }
             else if (fieldType.IsSubclassOf(typeof(UnityEngine.Object)) || fieldType == typeof(UnityEngine.Object)) {
                 fieldValue = EditorGUILayout.ObjectField(fieldName, (UnityEngine.Object)fieldValue, fieldType, true);
@@ -78,8 +81,9 @@ public class NodeEditor {
             }
         }
     }
+
     private static FieldInfo[] GetInspectorFields(Node node) {
-        return node.GetType().GetFields().Where(f => f.IsPublic).ToArray();
+        return node.GetType().GetFields().Where(f => f.IsPublic || f.GetCustomAttributes(typeof(SerializeField),false) != null).ToArray();
     }
 
     private static bool GetAttrib<T>(object[] attribs, out T attribOut) where T : Attribute {

Scripts/Editor/NodeEditorAction.cs

@@ -16,12 +16,13 @@ public partial class NodeEditorWindow {
     private bool IsHoveringNode { get { return hoveredNode != null; } }
     private bool HasSelectedNode { get { return selectedNode != null; } }
 
-    private Node hoveredNode;
-    private Node selectedNode;
-    private Node draggedNode;
-    private NodePort hoveredPort;
-    private NodePort draggedOutput;
-    private NodePort draggedOutputTarget;
+    private Node hoveredNode = null;
+
+    [NonSerialized] private Node selectedNode = null;
+    [NonSerialized] private Node draggedNode = null;
+    [NonSerialized] private NodePort hoveredPort = null;
+    [NonSerialized] private NodePort draggedOutput = null;
+    [NonSerialized] private NodePort draggedOutputTarget = null;
 
     private Rect nodeRects;
 
@@ -81,7 +82,7 @@ public partial class NodeEditorWindow {
                         }
                     }
                 }
-                else if (IsHoveringNode) {
+                else if (IsHoveringNode && IsHoveringTitle(hoveredNode)) {
                     draggedNode = hoveredNode;
                     dragOffset = hoveredNode.position.position - WindowToGridPosition(e.mousePosition);
                 }
@@ -108,9 +109,6 @@ public partial class NodeEditorWindow {
                     isPanning = false;
                 }
                 UpdateHovered();
-                break;
-            case EventType.repaint:
-
                 break;
         }
     }
@@ -171,9 +169,16 @@ public partial class NodeEditorWindow {
             }
             if (newHoverPort != hoveredPort) {
                 hoveredPort = newHoverPort;
-                Repaint();
             }
         }
         else hoveredPort = null;
     }
+
+    bool IsHoveringTitle(Node node) {
+        Vector2 mousePos = Event.current.mousePosition;
+        //Get node position
+        Vector2 nodePos = GridToWindowPosition(node.position.position);
+        Rect windowRect = new Rect(nodePos, new Vector2(node.position.size.x / zoom, 30 / zoom));
+        return windowRect.Contains(mousePos);
+    }
 }

Scripts/Editor/NodeEditorGUI.cs

@@ -12,13 +12,11 @@ public partial class NodeEditorWindow {
         Matrix4x4 m = GUI.matrix;
         Controls();
 
-        if (e.type != EventType.MouseMove && e.type != EventType.MouseDrag) {
         DrawGrid(position, zoom, panOffset);
         DrawNodes();
         DrawConnections();
         DrawDraggedConnection();
         DrawToolbar();
-        }
 
         GUI.matrix = m;
     }
@@ -135,6 +133,7 @@ public partial class NodeEditorWindow {
         BeginZoomed(position, zoom);
         if (e.type == EventType.Repaint) portRects.Clear();
         foreach (Node node in graph.nodes) {
+
             //Get node position
             Vector2 nodePos = GridToWindowPositionNoClipped(node.position.position);
 
@@ -173,13 +172,6 @@ public partial class NodeEditorWindow {
             nodeEditor.OnNodeGUI();
 
             GUILayout.EndArea();
-
-            if (windowRect.position != nodePos) {
-                nodePos = windowRect.position;
-                node.position.position = WindowToGridPosition(nodePos);
-                //Vector2 newPos = windowRect =
-            }
-
         }
         EndZoomed(position, zoom);
         EndWindows();

Scripts/Editor/NodeEditorResources.cs

@@ -37,12 +37,19 @@ public partial class NodeEditorWindow {
             outputColor = new GUIStyle((GUIStyle)"flow shader out 4");
             outputTexture = new GUIStyle((GUIStyle)"flow shader out 5");
 
-            foreach (GUIStyle style in new GUIStyle[] { inputInt, inputString, inputFloat, inputObject, inputTexture, inputColor, outputInt, outputString, outputFloat, outputObject, outputTexture, outputColor }) {
+            foreach (GUIStyle style in new GUIStyle[] { inputInt, inputString, inputFloat, inputObject, inputTexture, inputColor }) {
                 style.normal.textColor = Color.black;
                 style.fixedHeight = 18;
                 style.alignment = TextAnchor.MiddleLeft;
                 style.onHover.textColor = Color.red;
             }
+
+            foreach (GUIStyle style in new GUIStyle[] { outputInt, outputString, outputFloat, outputObject, outputTexture, outputColor }) {
+                style.normal.textColor = Color.black;
+                style.fixedHeight = 18;
+                style.alignment = TextAnchor.MiddleRight;
+                style.onHover.textColor = Color.red;
+            }
         }
 
         public GUIStyle GetInputStyle(Type type) {

Scripts/Editor/NodeEditorToolbar.cs

@@ -13,12 +13,16 @@ public partial class NodeEditorWindow {
         if (DropdownButton("View", 50)) { }
         if (DropdownButton("Settings", 70)) { }
         if (DropdownButton("Tools", 50)) ToolsContextMenu();
+
+        //Draw hover info
+        if (Event.current.type == EventType.Layout || Event.current.type == EventType.Repaint) {
             if (IsHoveringNode) {
                     GUILayout.Space(20);
                     string hoverInfo = hoveredNode.GetType().ToString();
                     if (IsHoveringPort) hoverInfo += " > " + hoveredPort.name;
                     GUILayout.Label(hoverInfo);
             }
+        }
 
         // Make the toolbar extend all throughout the window extension.
         GUILayout.FlexibleSpace();

Scripts/NodePort.cs

@@ -4,7 +4,7 @@ using UnityEngine;
 using System;
 
 [Serializable]
-public class NodePort :ISerializationCallbackReceiver{
+public class NodePort : ISerializationCallbackReceiver{
     public enum IO { Input, Output}
 
     public int ConnectionCount { get { return connections.Count; } }