public static uCanvas LoadNodeCanvas(string path)
{
if (string.IsNullOrEmpty(path))
{
Debug.LogWarning("Cannot load: path is null");
return(null);
}
// Fetch all objects in the save file
ScriptableObject[] objects = ResourceManager.LoadResources <ScriptableObject>(path);
if (objects == null || objects.Length == 0)
{
throw new UnityException("Cannot Load NodeCanvas: The specified path '" + path + "' does not point to a save file!");
}
// Filter out the NodeCanvas out of these objects
uCanvas nodeCanvas = objects.Single((ScriptableObject obj) => (obj as uCanvas) != null) as uCanvas;
if (nodeCanvas == null)
{
throw new UnityException("Cannot Load NodeCanvas: The file at the specified path '" + path + "' is no valid save file as it does not contain a NodeCanvas!");
}
uCanvas copy = CreateWorkingCopy(nodeCanvas);
// Path
copy.Path = path;
// Returning
return(copy);
}
// Canvas functions
public void SaveCanvas(string path)
{
if (currentCanvas == null)
{
return;
}
currentCanvas = uNodeEditorSaveManager.SaveNodeCanvas(path, currentCanvas);
}
public uNodeManager()
{
currentCanvas = null;
if (uNodeEditorState.savedCanvas != null)
{
currentCanvas = uNodeEditorState.savedCanvas;
}
uNodeEditorSaveManager.Flush();
}
public void AddConnection(uNode parent, uNode child)
{
if (IsValidConnection(parent, child))
{
parent.AddChild(child);
child.Parent = parent;
currentCanvas = uNodeEditorSaveManager.SaveCanvasState(currentCanvas);
}
}
public void RemoveConnection(uNode child)
{
if (child.Parent != null)
{
child.Parent.RemoveChild(child);
child.Parent = null;
currentCanvas = uNodeEditorSaveManager.SaveCanvasState(currentCanvas);
}
}
public void NewCanvas()
{
if (currentCanvas != null)
{
uNodeEditorSaveManager.Flush();
// @To do ask for confirmation to clear the current canvas
// Ask for save (?)
}
currentCanvas = ScriptableObject.CreateInstance <uCanvas>();
currentCanvas.Init("NewCancas");
currentCanvas = uNodeEditorSaveManager.SaveCanvasState(currentCanvas);
}
public void LoadCanvas(string path)
{
uCanvas c = uNodeEditorSaveManager.LoadNodeCanvas(path);
if (c == null)
{
return;
}
currentCanvas = c;
for (int i = 0; i < currentCanvas.Nodes.Count; i++)
{
currentCanvas.Nodes[i].InputKnob = new uKnob(currentCanvas.Nodes[i]);
currentCanvas.Nodes[i].OutputKnob = new uKnob(currentCanvas.Nodes[i]);
}
uNodeEditorSaveManager.Flush();
}
public void CreateNewNode()
{
if (currentCanvas == null)
{
return;
}
uNode n = ScriptableObject.CreateInstance <uTerrainNode>();
Vector2 p = uNodeEditor.editor.CanvasWindowRect.Contains(uNodeEditorState.mousePosition)
? uNodeEditorState.mousePosition
: new Vector2(200f, 200f);
// @ To do : scale p with EditorZoom
n.Init("Node" + currentCanvas.Nodes.Count, p);
currentCanvas.Nodes.Add(n);
currentCanvas = uNodeEditorSaveManager.SaveCanvasState(currentCanvas);
}
public static uCanvas CreateWorkingCopy(uCanvas canvas)
{
uCanvas ret = ScriptableObject.CreateInstance <uCanvas>();
ret.Init(canvas.Name);
// Copy each node
foreach (uNode n in canvas.Nodes)
{
uNode copy = n.GetCopy();
ret.Nodes.Add(copy);
}
// Restore hirearchy
ret.SetParentFromCopy();
return(ret);
}
public void DeleteNode(uNode n)
{
currentCanvas.Nodes.Remove(n);
if (n.Parent != null)
{
n.Parent.Childrens.Remove(n);
}
if (n.Childrens.Count > 0)
{
for (int i = 0; i < n.Childrens.Count; i++)
{
n.Childrens[i].Parent = null;
}
n.Childrens.Clear();
}
Object.DestroyImmediate(n);
currentCanvas = uNodeEditorSaveManager.SaveCanvasState(currentCanvas);
}
public static uCanvas SaveCanvasState(uCanvas c)
{
// New branch created
if (currentIndex + 1 < canvasStates.Count)
{
for (int i = currentIndex + 1; i < canvasStates.Count; i++)
{
canvasStates.RemoveAt(i);
}
}
canvasStates.Add(CreateWorkingCopy(c));
currentIndex++;
// Maximum amout of canvas saved at runtime
if (canvasStates.Count > uNodeEditorSettings.maxRuntimeCanvasSaved)
{
canvasStates.RemoveAt(0);
currentIndex--;
}
return(c);
}
// Native save
public static uCanvas SaveNodeCanvas(string path, uCanvas nodeCanvas)
{
if (string.IsNullOrEmpty(path))
{
Debug.LogWarning("Cannot save: No path to save");
return(nodeCanvas);
}
if (nodeCanvas == null)
{
Debug.LogWarning("Cannot save: The NodeCanvas is null!");
return(null);
}
string p = path;
path = path.Replace(Application.dataPath, "Assets");
// Write canvas
AssetDatabase.DeleteAsset(path);
AssetDatabase.CreateAsset(nodeCanvas, path);
// Write nodes + contents
for (int i = 0; i < nodeCanvas.Nodes.Count; i++)
{
AddSubAsset(nodeCanvas.Nodes[i], nodeCanvas);
}
// Saving
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
// Returning a copy
uCanvas ret = CreateWorkingCopy(nodeCanvas);
ret.Path = p;
return(ret);
}
public void AddNewNode(uNode n)
{
currentCanvas.Nodes.Add(n);
currentCanvas = uNodeEditorSaveManager.SaveCanvasState(currentCanvas);
}
private void ProcessEvents()
{
// Getting event info
Event e = Event.current;
if (e == null || !CanvasWindowRect.Contains(e.mousePosition))
{
return;
}
uNodeEditorState.mousePosition = e.mousePosition;
bool leftClick = (e.button == 0), rightClick = (e.button == 1);
uNodeEditorState.focusedNode = manager.NodeAtPosition(uNodeEditorState.mousePosition);
uNodeEditorState.selectedInputKnob = manager.InputKnobAtPosition(uNodeEditorState.mousePosition);
uNodeEditorState.selectedOutputKnob = manager.OutputKnobAtPosition(uNodeEditorState.mousePosition);
// Event processing
switch (e.type)
{
case EventType.MouseDrag:
// Drag selected node
if (leftClick && uNodeEditorState.selectedNode != null && uNodeEditorState.outputKnobSaved == null)
{
uNodeEditorState.mouseDelta = e.delta * (1f / uNodeEditorState.zoom);
manager.MoveSelectedNode();
}
// Drawing a connection line
if (leftClick && uNodeEditorState.outputKnobSaved != null)
{
uNodeEditorState.currentLineDrawn = new uLine();
Vector2 mousePosWithZoom = uNodeEditorState.mousePosition * (1f / uNodeEditorState.zoom);
uNodeEditorState.currentLineDrawn.start = new Vector3(uNodeEditorState.outputKnobSaved.Rect.x,
uNodeEditorState.outputKnobSaved.Rect.y,
0f);
uNodeEditorState.currentLineDrawn.end = new Vector3(mousePosWithZoom.x,
mousePosWithZoom.y,
0f);
}
// Left click on canvas : move around canvas
else if (leftClick && uNodeEditorState.outputKnobSaved == null && uNodeEditorState.selectedNode == null)
{
uNodeEditorState.mouseDelta = e.delta * (1f / uNodeEditorState.zoom);
manager.MoveNodesAlongMouse();
}
break;
case EventType.MouseUp:
// Connection began in event MouseDrag, and release on an input connection of another node
// Try to create the connection between the two
if (uNodeEditorState.outputKnobSaved != null && uNodeEditorState.selectedInputKnob != null)
{
manager.AddConnection(uNodeEditorState.outputKnobSaved.Parent, uNodeEditorState.selectedInputKnob.Parent);
}
// Click on a outputKnob without drawing : Collapse/Show children
else if (uNodeEditorState.outputKnobSaved != null && uNodeEditorState.selectedInputKnob == null &&
uNodeEditorState.selectedOutputKnob == uNodeEditorState.outputKnobSaved)
{
uNodeEditorState.selectedOutputKnob.ChangeShowState();
}
else if (uNodeEditorState.selectedNode != null)
{
manager.CurrentCanvas = uNodeEditorSaveManager.SaveCanvasState(manager.CurrentCanvas);
}
// Release selected elements
uNodeEditorState.currentLineDrawn = null;
uNodeEditorState.selectedNode = null;
uNodeEditorState.outputKnobSaved = null;
break;
case EventType.MouseDown:
// Click on node output : Connection creation begin
if (uNodeEditorState.selectedOutputKnob != null)
{
uNodeEditorState.outputKnobSaved = uNodeEditorState.selectedOutputKnob;
}
// Click on node input : remove all connection
if (uNodeEditorState.selectedInputKnob != null)
{
manager.RemoveConnection(uNodeEditorState.selectedInputKnob.Parent);
}
// Click on node : select it
else if (uNodeEditorState.focusedNode != null && uNodeEditorState.selectedNode == null)
{
uNodeEditorState.selectedNode = uNodeEditorState.focusedNode;
}
// Context clicked on a node's property
//if (rightClick && uNodeEditorState.focusedNode != null)
//{
//}
// Context menu when clicked on canvas
if (rightClick && uNodeEditorState.focusedNode == null)
{
manager.ShowCanvasGenericMenu();
}
// Context menu when clicked on node
else if (rightClick && uNodeEditorState.focusedNode != null)
{
manager.ShowNodeGenericMenu();
}
break;
case EventType.ScrollWheel:
uNodeEditorState.zoom = Mathf.Min(uNodeEditorSettings.maxZoom, Mathf.Max(uNodeEditorState.zoom - e.delta.y
/ uNodeEditorSettings.zoomSpeedFactor,
uNodeEditorSettings.minZoom));
break;
case EventType.KeyDown:
if (e.shift && e.keyCode == KeyCode.S && manager.CurrentCanvas != null)
{
manager.SaveCanvas(manager.CurrentCanvas.Path);
}
if (e.shift && e.keyCode == KeyCode.Z && manager.CurrentCanvas != null)
{
uCanvas n = uNodeEditorSaveManager.GetBeforeState();
if (n != null)
{
manager.CurrentCanvas = n;
}
}
else if (e.shift && e.keyCode == KeyCode.Y && manager.CurrentCanvas != null)
{
uCanvas n = uNodeEditorSaveManager.GetNextState();
if (n != null)
{
manager.CurrentCanvas = n;
}
}
break;
}
Repaint();
}
private void DrawSideWindow()
{
sideWindowWidth = Mathf.Min(600, Mathf.Max(200, (int)(position.width / 5)));
GUILayout.BeginArea(SideWindowRect, GUI.skin.box);
// Management
GUILayout.Label(new GUIContent("Management"), uNodeEditorSettings.boldStyle);
if (GUILayout.Button(new GUIContent("New Canvas", "Loads an empty Canvas")))
{
manager.NewCanvas();
flagRepainting = true;
}
if (GUILayout.Button(new GUIContent("Load Canvas", "Loads the Canvas")))
{
string path = EditorUtility.OpenFilePanel("Load Canvas", "Assets/", "asset");
manager.LoadCanvas(path);
}
if (GUILayout.Button(new GUIContent("Save As", "Saves the Canvas")) && manager.CurrentCanvas != null)
{
string path = EditorUtility.SaveFilePanelInProject("Save Canvas", "test", "asset", "Save Canvas");
manager.SaveCanvas(path);
}
if (GUILayout.Button(new GUIContent("Save", "Saves the Canvas")) && manager.CurrentCanvas != null)
{
manager.SaveCanvas(manager.CurrentCanvas.Path);
}
// Actions
GUILayout.Space(20);
GUILayout.Label(new GUIContent("Actions"), uNodeEditorSettings.boldStyle);
if (GUILayout.Button(new GUIContent("New Node", "Creates new uNode")) && manager.CurrentCanvas != null)
{
manager.CreateNewNode();
flagRepainting = true;
}
if (GUILayout.Button(new GUIContent("Undo", "Undo Last Action")) && manager.CurrentCanvas != null)
{
uCanvas n = uNodeEditorSaveManager.GetBeforeState();
if (n != null)
{
manager.CurrentCanvas = n;
flagRepainting = true;
}
}
if (GUILayout.Button(new GUIContent("Redo", "Redo Last Action")) && manager.CurrentCanvas != null)
{
uCanvas n = uNodeEditorSaveManager.GetNextState();
if (n != null)
{
manager.CurrentCanvas = n;
flagRepainting = true;
}
}
if (GUILayout.Button(new GUIContent("Settings", "Open Settings Panel")))
{
uNodeSettingsWindow.ShowWindow(this);
}
// Information
GUILayout.Space(20);
GUILayout.Label("Current Canvas : " + (manager.CurrentCanvas != null ? manager.CurrentCanvas.Name : "No Canvas"), uNodeEditorSettings.boldStyle);
EditorGUILayout.Slider(new GUIContent("Zoom", "Use the Mousewheel to zoom/unzoom"), uNodeEditorState.zoom, 0.6f, 10.0f);
GUILayout.Label("Cursor Position : " + uNodeEditorState.mousePosition);
GUILayout.Label("Cursor delta : " + uNodeEditorState.mouseDelta);
GUILayout.Label("Focused Node : " + (uNodeEditorState.focusedNode == null ? "null" : uNodeEditorState.focusedNode.Position.ToString()));
GUILayout.Label("Selected Node : " + (uNodeEditorState.selectedNode == null ? "null" : uNodeEditorState.selectedNode.Position.ToString()));
GUILayout.Label("Output Knob : " + (uNodeEditorState.outputKnobSaved == null ? "null" : uNodeEditorState.outputKnobSaved.Rect.ToString()));
GUILayout.Label("Input Knob : " + (uNodeEditorState.selectedInputKnob == null ? "null" : uNodeEditorState.selectedInputKnob.Rect.ToString()));
GUILayout.Space(20);
GUILayout.Label("Current Canvas : " + uNodeEditorSaveManager.CurrentIndex);
GUILayout.Label("Saved Canvas Count : " + uNodeEditorSaveManager.CanvasStates.Count);
GUILayout.EndArea();
}