Base node manipulation finished

Zoom
Node Add / Remove
Node Drag

Scripts/Editor/NodeEditorAction.cs

@@ -7,10 +7,10 @@ using UNEC;
 
 public static class NodeEditorAction {
 
-    public static NodeEditorWindow window { get { return NodeEditorWindow.window; } }
     public static bool dragging;
+    public static Vector2 dragOffset;
 
-    public static void Controls() {
+    public static void Controls(NodeEditorWindow window) {
         Event e = Event.current;
 
         switch (e.type) {
@@ -20,35 +20,46 @@ public static class NodeEditorAction {
                 else window.zoom -= 0.1f * window.zoom;
                 break;
             case EventType.MouseDrag:
-                if (e.button == 1) {
+                if (e.button == 0) {
+                    if (window.activeNode != null) {
+                        window.activeNode.position.position = window.WindowToGridPosition(e.mousePosition) + dragOffset;
+                        window.Repaint();
+                    }
+                } 
+                else if (e.button == 1) {
                     window.panOffset += e.delta * window.zoom;
                     dragging = true;
                 }
                 break;
             case EventType.KeyDown:
-                if (e.keyCode == KeyCode.F) Focus();
+                if (e.keyCode == KeyCode.F) Focus(window);
                 break;
-            case EventType.mouseDown:
+            case EventType.MouseDown:
                 dragging = false;
+                window.SelectNode(window.hoveredNode);
+                if (window.hoveredNode != null) {
+                    dragOffset = window.hoveredNode.position.position - window.WindowToGridPosition(e.mousePosition);
+                }
+                window.Repaint();
                 break;
             case EventType.MouseUp:
                 if (dragging) return;
+
                 if (e.button == 1) {
-                    NodeEditorGUI.RightClickContextMenu();
+                    NodeEditorGUI.RightClickContextMenu(window);
                 }
                 break;
         }
     }
 
     /// <summary> Puts all nodes in focus. If no nodes are present, resets view to  </summary>
-    public static void Focus() {
+    public static void Focus(this NodeEditorWindow window) {
         window.zoom = 2;
         window.panOffset = Vector2.zero;
     }
 
-    public static void CreateNode(Type type, Vector2 position) {
+    public static void CreateNode(this NodeEditorWindow window, Type type, Vector2 position) {
-        Node node = window.currentGraph.AddNode(type);
+        Node node = window.graph.AddNode(type);
-        Debug.Log("SetNode " + position);
         node.position.position = position;
     }
 }

Scripts/Editor/NodeEditorGUI.cs

@@ -8,7 +8,27 @@ namespace UNEC {
     /// <summary> Contains GUI methods </summary>
     public static class NodeEditorGUI {
 
-        public static NodeEditorWindow window { get { return NodeEditorWindow.window; } }
+        public static void BeginZoomed(Rect rect, float zoom) {
+            GUI.EndClip();
+            
+            GUIUtility.ScaleAroundPivot(Vector2.one / zoom, rect.size * 0.5f);
+            Vector4 padding = new Vector4(0, 22, 0, 0);
+            padding *= zoom;
+            GUI.BeginClip(new Rect(
+                -((rect.width * zoom) - rect.width) * 0.5f,
+                -(((rect.height * zoom) - rect.height) * 0.5f) + (22 * zoom),
+                rect.width * zoom,
+                rect.height * zoom));
+        }
+
+        public static void EndZoomed(Rect rect, float zoom) {
+            GUIUtility.ScaleAroundPivot(Vector2.one * zoom, rect.size * 0.5f);
+            Vector3 offset = new Vector3(
+                (((rect.width * zoom) - rect.width) * 0.5f),
+                (((rect.height * zoom) - rect.height) * 0.5f) + (-22 * zoom)+22,
+                0);
+            GUI.matrix = Matrix4x4.TRS(offset, Quaternion.identity, Vector3.one);
+        }
 
         public static void DrawGrid(Rect rect, float zoom, Vector2 panOffset) {
 
@@ -35,11 +55,11 @@ namespace UNEC {
             GUI.DrawTextureWithTexCoords(rect, crossTex, new Rect(tileOffset + new Vector2(0.5f,0.5f), tileAmount));
         }
 
-        public static void DrawToolbar() {
+        public static void DrawToolbar(NodeEditorWindow window) {
             EditorGUILayout.BeginHorizontal("Toolbar");
 
             if (DropdownButton("File", 50)) FileContextMenu();
-            if (DropdownButton("Edit", 50)) EditContextMenu();
+            if (DropdownButton("Edit", 50)) EditContextMenu(window);
             if (DropdownButton("View", 50)) { }
             if (DropdownButton("Settings", 70)) { }
             if (DropdownButton("Tools", 50)) { }
@@ -54,16 +74,22 @@ namespace UNEC {
             return GUILayout.Button(name, EditorStyles.toolbarDropDown, GUILayout.Width(width));
         }
 
-        public static void RightClickContextMenu() {
+        public static void RightClickContextMenu(NodeEditorWindow window) {
             GenericMenu contextMenu = new GenericMenu();
-            Vector2 pos = window.GetMousePositionOnGrid();
-            for (int i = 0; i < NodeEditorReflection.nodeTypes.Length; i++) {
-                Type type = NodeEditorReflection.nodeTypes[i];
-                contextMenu.AddItem(new GUIContent(NodeEditorReflection.nodeTypes[i].ToString()), false, () => {
-                    NodeEditorAction.CreateNode(type, pos);
-                });
-            }
 
+            if (window.hoveredNode != null) {
+                Node node = window.hoveredNode;
+                contextMenu.AddItem(new GUIContent("Remove"), false, () => window.graph.RemoveNode(node));
+            }
+            else {
+                Vector2 pos = window.WindowToGridPosition(Event.current.mousePosition);
+                for (int i = 0; i < NodeEditorReflection.nodeTypes.Length; i++) {
+                    Type type = NodeEditorReflection.nodeTypes[i];
+                    contextMenu.AddItem(new GUIContent(NodeEditorReflection.nodeTypes[i].ToString()), false, () => {
+                        window.CreateNode(type, pos);
+                    });
+                }
+            }
             contextMenu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
         }
 
@@ -79,9 +105,9 @@ namespace UNEC {
             contextMenu.DropDown(new Rect(5f, 17f, 0f, 0f));
         }
 
-        public static void EditContextMenu() {
+        public static void EditContextMenu(NodeEditorWindow window) {
             GenericMenu contextMenu = new GenericMenu();
-            contextMenu.AddItem(new GUIContent("Clear"), false, () => window.currentGraph.Clear());
+            contextMenu.AddItem(new GUIContent("Clear"), false, () => window.graph.Clear());
 
             contextMenu.DropDown(new Rect(5f, 17f, 0f, 0f));
         }

Scripts/Editor/NodeEditorWindow.cs

@@ -6,11 +6,11 @@ using UNEC;
 
 public class NodeEditorWindow : EditorWindow {
 
+    public NodeGraph graph { get { return _graph != null ? _graph : _graph = new NodeGraph(); } }
+    public NodeGraph _graph;
+    public Node hoveredNode;
+    public Node activeNode { get; private set; }
 
-    public static NodeEditorWindow window { get { return focusedWindow as NodeEditorWindow; } }
-
-    public NodeGraph currentGraph { get { return _currentGraph != null ? _currentGraph : _currentGraph = new NodeGraph(); }}
-    public NodeGraph _currentGraph;
     public Vector2 panOffset { get { return _panOffset; } set { _panOffset = value; Repaint(); } }
     private Vector2 _panOffset;
     public float zoom { get { return _zoom; } set { _zoom = Mathf.Clamp(value, 1f, 5f); Repaint(); } }
@@ -25,56 +25,70 @@ public class NodeEditorWindow : EditorWindow {
     }
 
     private void OnGUI() {
-        NodeEditorAction.Controls();
+        Matrix4x4 m = GUI.matrix;
+        NodeEditorAction.Controls(this);
 
 
-        BeginWindows();
         NodeEditorGUI.DrawGrid(position, zoom, panOffset);
-        NodeEditorGUI.DrawToolbar();
         DrawNodes();
-        EndWindows();
+        NodeEditorGUI.DrawToolbar(this);
 
+        GUI.matrix = m;
     }
 
     private void DrawNodes() {
-        Matrix4x4 m = GUI.matrix;
+        BeginWindows();
-        GUI.EndClip();
+        NodeEditorGUI.BeginZoomed(position, zoom);
-        GUIUtility.ScaleAroundPivot(Vector2.one / zoom, position.size * 0.5f);
+        Event e = Event.current;
-        foreach (KeyValuePair<string, Node> kvp in currentGraph.nodes) {
+        hoveredNode = null;
+        foreach (KeyValuePair<int, Node> kvp in graph.nodes) {
             Node node = kvp.Value;
+            int id = kvp.Key;
 
-            //Vector2 p = node.position.position + (position.size *0.5f) + panOffset;
             //Get node position
-            Vector2 windowPos = GridToWindowPosition(node.position.position);
+            Vector2 windowPos = GridToWindowPositionNoClipped(node.position.position);
-            windowPos = -windowPos;
+
+            Rect windowRect = new Rect(windowPos, new Vector2(200, 200));
+            if (windowRect.Contains(e.mousePosition)) hoveredNode = node;
+
+            GUIStyle style = (node == activeNode) ? (GUIStyle)"flow node 0 on" : (GUIStyle)"flow node 0";
+            GUI.Box(windowRect, node.ToString(), style);
+
+
+            if (windowRect.position != windowPos) {
+                windowPos = windowRect.position;
+                node.position.position = WindowToGridPosition(windowPos);
+            //Vector2 newPos = windowRect =
+            }
 
-            Rect windowRect = new Rect(windowPos, new Vector2(200,200));
-            windowRect = GUI.Window(0, windowRect, DraggableWindow, node.ToString());
-            //node.position = windowRect.position;
         }
-        GUI.matrix = m;
+        NodeEditorGUI.EndZoomed(position, zoom);
-        Vector2 padding = new Vector2(0, 0);
+        EndWindows();
-        padding *= zoom;
-        GUI.BeginClip(new Rect(
-            -(((position.width*zoom) - position.width)*0.5f) + (padding.x),
-            -(((position.height * zoom) - position.height) * 0.5f) + (padding.y),
-            (position.width*zoom)- (padding.x * 2),
-            (position.height * zoom) - (padding.y * 2)));
     }
 
     private void DraggableWindow(int windowID) {
-        GUI.DragWindow(new Rect(0, 0, 10000, 20));
+        GUI.DragWindow();
-    }
 
-    public Vector2 GetMousePositionOnGrid() {
+        if (GUILayout.Button("ASDF")) Debug.Log("ASDF");
-        return WindowToGridPosition(Event.current.mousePosition);
+        if (GUI.Button(new Rect(20,20,200,200),"ASDF")) Debug.Log("ASDF");
     }
 
     public Vector2 WindowToGridPosition(Vector2 windowPosition) {
-        return windowPosition - (window.position.size * 0.5f) - (panOffset * zoom);
+        return (windowPosition - (position.size * 0.5f) - (panOffset / zoom)) * zoom;
     }
 
     public Vector2 GridToWindowPosition(Vector2 gridPosition) {
-        return ((window.position.size * 0.5f) - (panOffset * zoom)) + gridPosition;
+        return (position.size * 0.5f) + (panOffset / zoom) + gridPosition;
+    }
+
+    public Vector2 GridToWindowPositionNoClipped(Vector2 gridPosition) {
+        Vector2 center = position.size * 0.5f;
+        float xOffset = (center.x * zoom + (panOffset.x + gridPosition.x));
+        float yOffset = (center.y * zoom + (panOffset.y + gridPosition.y));
+        return new Vector2(xOffset, yOffset);
+    }
+
+    public void SelectNode(Node node) {
+        activeNode = node;
     }
 }

Scripts/NodeGraph.cs

@@ -6,25 +6,47 @@ using System;
 /// <summary> Base class for all node graphs </summary>
 public class NodeGraph {
 
-    public Dictionary<string, Node> nodes = new Dictionary<string, Node>();
+    public Dictionary<int, Node> nodes = new Dictionary<int, Node>();
 
     public T AddNode<T>() where T : Node {
         T node = default(T);
-        nodes.Add(GetGUID(), node);
+        nodes.Add(GetUniqueID(), node);
         return node;
     }
 
     public Node AddNode(Type type)  {
         Node node = (Node)Activator.CreateInstance(type);
         if (node == null) return null;
-        nodes.Add(GetGUID(), node);
+        nodes.Add(GetUniqueID(), node);
         return node;
     }
 
-    private string GetGUID() {
+    public void RemoveNode(Node node) {
-        string guid = Guid.NewGuid().ToString();
+        int id = GetNodeID(node);
-        while(nodes.ContainsKey(guid)) guid = GetGUID();
+        if (id != -1) nodes.Remove(id);
-        return guid;
+        else Debug.LogWarning("Node " + node.ToString() + " is not part of NodeGraph");
+    }
+
+    public void RemoveNode(int id) {
+        nodes.Remove(id);
+    }
+
+    public int GetNodeID(Node node) {
+        foreach(var kvp in nodes) {
+            if (kvp.Value == node) return kvp.Key;
+        }
+        return -1;
+    }
+
+    public Node GetNode(int id) {
+        if (nodes.ContainsKey(id)) return nodes[id];
+        return null;
+    }
+
+    private int GetUniqueID() {
+        int id = 0;
+        while (nodes.ContainsKey(id)) id++;
+        return id;
     }
 
     public void Clear() {