void AddTaskToAssets(BehaviourTreeExecutionNode node, BehaviourTreeTask oldTaskToRemove)
{
if (oldTaskToRemove != null)
{
DestroyImmediate(oldTaskToRemove, true);
}
AssetDatabase.AddObjectToAsset(node.task, behaviourTreeAssetFilesPath);
AssetDatabase.ImportAsset(behaviourTreeAssetFilesPath);
AssetDatabase.Refresh();
}
// Draw the property inside the given rect
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
EditorGUI.BeginProperty(position, label, property);
object variable = property.serializedObject.targetObject;
EditorSharedVariable sharedVariable = Base.Common.EditorHelpers.GetTargetObjectOfProperty(property) as EditorSharedVariable;
BehaviourTreeTask objectVariable = variable as BehaviourTreeTask;
// Draw label
position = EditorGUI.PrefixLabel(position, GUIUtility.GetControlID(FocusType.Passive), label);
// Don't make child fields be indented
var indent = EditorGUI.indentLevel;
EditorGUI.indentLevel = 0;
if (objectVariable.treeOwner == null)
{
return;
}
string[] possibleNames = objectVariable.treeOwner.Blackboard.getNamesOfVariablesByType(sharedVariable.type);
selectedIndex = 0;
for (int a = 0; a < possibleNames.Length; ++a)
{
if (possibleNames[a] == sharedVariable.name)
{
selectedIndex = a;
break;
}
}
// Calculate rect
var nameRect = new Rect(position.x, position.y, 150, position.height);
//choose from possible list
int newIndex = EditorGUI.Popup(nameRect, selectedIndex, possibleNames);
if (possibleNames.Length > 0)
{
sharedVariable.name = possibleNames[newIndex];
selectedIndex = newIndex;
}
// Set indent back to what it was
EditorGUI.indentLevel = indent;
EditorGUI.EndProperty();
}
private void DrawConnections(BehaviourTreeTask node)
{
Vector2 startPosition = new Vector2(node.NodeRect.center.x, node.NodeRect.yMax - 10);
if (!selectedBehaviour.hasAnyChildren(node))
{
return;
}
foreach (BehaviourTreeTask child in selectedBehaviour.getAllChildren(node))
{
Vector2 endPosition = new Vector2(child.NodeRect.center.x, child.NodeRect.yMin + 10);
Vector2 distance = endPosition - startPosition;
distance.x = 0;
distance.y *= 0.8f;
Handles.DrawBezier(startPosition, endPosition, startPosition + distance, endPosition - distance, Color.white, null, 3.0f);
}
}
private Vector2 computeStartPositionFor(BehaviourTreeTask forTask)
{
Rect startRect = forTask.NodeRect;
Vector2 pos = startRect.position;
//check children and put it at the most right position
BehaviourTreeTask lastChild = forTask.getLastChildPos();
if (lastChild == null)
{
pos.y += startRect.height * 2;
}
else
{
pos = lastChild.NodeRect.position;
pos.x += startRect.width * 2;
}
return(pos);
}
private BehaviourTreeTask getNodeAt(Vector2 pos)
{
BehaviourTreeTask selectedNode = null;
pos += scrollPosition;
pos /= scaling;
foreach (BehaviourTreeTask current in selectedBehaviour.GetNodes())
{
Rect local = current.NodeRect;
//local.width *= scaling;
// local.height *= scaling;
if (local.Contains(pos))
{
selectedNode = current;
}
}
return(selectedNode);
}
private void OnGUI()
{
if (selectedBehaviour == null)
{
EditorGUILayout.LabelField("No behaviour tree selected");
}
else
{
processEvents();
GUILayout.BeginVertical();
drawTopPanel();
GUILayout.BeginHorizontal();
drawLeftPanel();
// drawTreeArea();
DrawScrollView();
GUILayout.EndHorizontal();
GUILayout.EndVertical();
if (addNodeFor != null)
{
//add empty child node for selected node
selectedBehaviour.createNode(addNodeFor, Event.current.mousePosition);
addNodeFor = null;
}
if (nodeToRemove != null)
{
//remove selected node and all his connections
Undo.RegisterCompleteObjectUndo(selectedBehaviour, "Remove objects");
selectedBehaviour.removeNode(nodeToRemove);
EditorUtility.SetDirty(selectedBehaviour);
nodeToRemove = null;
}
}
}
public BehaviourTreeDecorator(BehaviourTreeTask Task)
{
this.Task = Task;
}
public BehaviourTreeDecoratorInverter(BehaviourTreeTask task) : base(task)
{
}
public BehaviourTreeDecoratorFilter(Func <bool> Condition, BehaviourTreeTask task) : base(task)
{
this.Condition = Condition;
}
public BehaviourTreeDecoratorUntilFail(BehaviourTreeTask task) : base(task)
{
}
public BehaviourTreeDecoratorLimit(int maxRepetition, BehaviourTreeTask task) : base(task)
{
this.maxRepetition = maxRepetition;
count = 0;
}
///////////////////////////////////////////////////////
#endregion
private void processEvents()
{
Event currentEvent = Event.current;
if (currentEvent.type == EventType.MouseDown && currentNode == null)
{
//Debug.Log("mouse pos scaled: " + mousePosition + " mouse position normal: " + currentEvent.mousePosition+" scaling: "+scaling);
currentNode = getNodeAt(currentEvent.mousePosition - new Vector2(leftPanelSize.x, topPanelHeight));
if (currentNode != null)
{
localOffsetForDrag = currentEvent.mousePosition;
Selection.activeObject = currentNode;
//set as selectd node
selectedNode = currentNode;
ActionTreeTask actionTask = selectedNode as ActionTreeTask;
if (actionTask != null)
{
//create serialized object for editor modification
selectedSerializedAction = new SerializedObject(selectedNode);
selectedSerializedAction.Update();
}
GUI.changed = true;
}
else
{
if (currentEvent.mousePosition.x > leftPanelSize.x && currentEvent.mousePosition.x < this.position.width - GUI.skin.verticalScrollbar.fixedWidth * 2.5f &&
currentEvent.mousePosition.y < this.position.height - 20.0f)
{
draggingCanvas = true;
draggingOffset = currentEvent.mousePosition + scrollPosition;
Selection.activeObject = selectedBehaviour;
}
}
}
else if (currentEvent.type == EventType.MouseDrag && currentNode != null)
{
Undo.RecordObject(selectedBehaviour, "Drag panel");
Rect oldRect = currentNode.NodeRect;
Vector2 offset = (currentEvent.mousePosition - localOffsetForDrag) / scaling;
localOffsetForDrag = currentEvent.mousePosition;
oldRect.position += offset;
oldRect.position = new Vector2(Mathf.Clamp(oldRect.position.x, 0, 10000), Mathf.Clamp(oldRect.position.y, 0, 10000));
currentNode.NodeRect = oldRect;
GUI.changed = true;
}
else if (currentEvent.type == EventType.MouseDrag && draggingCanvas)
{
Undo.RecordObject(selectedBehaviour, "Drag view");
scrollPosition = draggingOffset - currentEvent.mousePosition;
GUI.changed = true;
}
else if (currentEvent.type == EventType.MouseUp && currentNode != null)
{
currentNode = null;
}
else if (currentEvent.type == EventType.MouseUp && draggingCanvas)
{
draggingCanvas = false;
}
}
private void onDrawTasksPanel()
{
if (selectedNode == null)
{
GUILayout.Label("No selected node");
}
else if (selectedNode.taskType == TaskType.ACTION)
{
GUILayout.Label("Selected node is a leaf node");
}
else if (selectedNode.taskType == TaskType.DECORATOR && selectedNode.children.Count > 0 &&
((DecoratorTreeTask)selectedNode).OnlySingleChildAllowed)
{
GUILayout.Label("Selected node has OnlyOneChildAllowed flag enabled, cannot add new childen");
}
else
{
GUILayout.BeginVertical();
GUILayout.Space(20);
GUILayout.Label("__________________COMPOSITES__________________");
GUILayout.Space(20);
foreach (BehaviourTreeTask current in behaviourTasks_Composite)
{
// Debug.Log(current.name);
if (GUILayout.Button(current.taskTypeName))
{
Type toCreate = current.GetType();
Vector2 createAt = computeStartPositionFor(selectedNode);
var element = selectedBehaviour.createNodeOfType(toCreate, selectedNode, createAt);
if (element != null)
{
selectedNode = element;
selectedNode.editorTexture = current.editorTexture;
selectedNode.taskTypeName = current.taskTypeName;
selectedNode.taskType = current.taskType;
}
}
}
GUILayout.Space(20);
GUILayout.Label("__________________DECORATORS__________________");
GUILayout.Space(20);
foreach (BehaviourTreeTask current in behaviourTasks_Decorators)
{
// Debug.Log(current.name);
if (GUILayout.Button(current.taskTypeName))
{
Type toCreate = current.GetType();
Vector2 createAt = computeStartPositionFor(selectedNode);
var element = selectedBehaviour.createNodeOfType(toCreate, selectedNode, createAt);
if (element != null)
{
selectedNode = element;
selectedNode.editorTexture = current.editorTexture;
selectedNode.taskTypeName = current.taskTypeName;
selectedNode.taskType = current.taskType;
}
}
}
GUILayout.Space(20);
GUILayout.Label("__________________ACTIONS__________________");
GUILayout.Space(20);
foreach (BehaviourTreeTask current in behaviourTasks_Actions)
{
// Debug.Log(current.name);
if (GUILayout.Button(current.taskTypeName))
{
Type toCreate = current.GetType();
Vector2 createAt = computeStartPositionFor(selectedNode);
var element = selectedBehaviour.createNodeOfType(toCreate, selectedNode, createAt);
selectedNode = element;
selectedNode.editorTexture = current.editorTexture;
selectedNode.taskTypeName = current.taskTypeName;
selectedNode.taskType = current.taskType;
}
}
GUILayout.EndVertical();
}
}
/// <summary>
/// DRAW UI
/// </summary>
private void DrawNode(BehaviourTreeTask node)
{
Color lastColor = GUI.backgroundColor;
if (selectedNode == node)
{
GUI.backgroundColor = Color.green;
}
else
{
GUI.backgroundColor = lastColor;
}
if (node.taskType != TaskType.ROOT)
{
Rect upperPartRect = new Rect(node.NodeRect.x + node.NodeRect.width * 0.5f - node.NodeRect.width * 0.3f, node.NodeRect.y - node.NodeRect.height * 0.1f,
node.NodeRect.width * 0.6f, node.NodeRect.height * 0.3f);
GUILayout.BeginArea(upperPartRect, nodeStyle);
GUILayout.EndArea();
}
if (node.taskType != TaskType.ACTION)
{
Rect lowerPartRect = new Rect(node.NodeRect.x + node.NodeRect.width * 0.5f - node.NodeRect.width * 0.3f, node.NodeRect.y + node.NodeRect.height * 0.8f,
node.NodeRect.width * 0.6f, node.NodeRect.height * 0.3f);
GUILayout.BeginArea(lowerPartRect, nodeStyle);
GUILayout.EndArea();
}
GUILayout.BeginArea(node.NodeRect, nodeStyle);
GUI.skin.label.alignment = TextAnchor.MiddleCenter;
GUI.skin.box.alignment = TextAnchor.MiddleCenter;
GUILayout.BeginVertical();
GUILayout.Label(node.taskTypeName);
GUILayout.BeginHorizontal();
GUILayout.FlexibleSpace();
GUILayout.Box(node.editorTexture);
GUILayout.FlexibleSpace();
GUILayout.EndHorizontal();
GUILayout.EndVertical();
GUILayout.EndArea();
if (node.taskType != TaskType.ROOT)
{
Rect nodeRectFull = node.NodeRect;
Rect buttonRect = new Rect(nodeRectFull.x - 10.0f + nodeRectFull.width * 0.5f, nodeRectFull.y + nodeRectFull.height * 0.7f, 20.0f, 20.0f);
//buttons for erasing
if (GUI.Button(buttonRect, "x"))
{
//delete node
if (!reparenting)
{
nodeToRemove = node;
}
}
//draw option for reparenting
Rect reparentRect = new Rect(nodeRectFull.x - 10.0f + nodeRectFull.width * 0.8f, nodeRectFull.y + nodeRectFull.height * 0.7f, 20.0f, 20.0f);
if (reparenting)
{
if (selectedForReparenting == node)
{
var oldColor = GUI.backgroundColor;
GUI.backgroundColor = Color.red;
if (GUI.Button(reparentRect, "R"))
{
reparenting = false;
selectedForReparenting = null;
}
GUI.backgroundColor = oldColor;
}
else
{
var oldColor = GUI.backgroundColor;
GUI.backgroundColor = Color.green;
if (GUI.Button(reparentRect, "R"))
{
BehaviourTree.Reparent(node, selectedForReparenting);
reparenting = false;
selectedForReparenting = null;
}
GUI.backgroundColor = oldColor;
}
}
else
{
if (GUI.Button(reparentRect, "R"))
{
reparenting = true;
selectedForReparenting = node;
}
}
}
GUI.backgroundColor = lastColor;
}
public BehaviourTree(BehaviourTreeTask root)
{
this.root = root;
}
void ExecutionWindowFunction(int windowID)
{
BehaviourTreeExecutionNode node = (BehaviourTreeExecutionNode)FindNodeByID(BehaviourTreeEditorWindow.behaviourTree, windowID);
Event current = Event.current;
if (current.mousePosition.x >= 0.0f && current.mousePosition.x <= nodeSize.x * zoomScale &&
current.mousePosition.y >= 0.0f && current.mousePosition.y <= nodeSize.y * zoomScale &&
DragAndDrop.objectReferences.Length == 1)
{
Object taskScriptAsset = DragAndDrop.objectReferences[0];
if (!(taskScriptAsset is MonoScript))
{
DragAndDrop.visualMode = DragAndDropVisualMode.Rejected;
}
else
{
DragAndDrop.visualMode = DragAndDropVisualMode.Link;
}
}
if (current.type == EventType.MouseDown && current.button == 1)
{
this.selectedNode = node;
if (Selection.activeObject != BehaviourTreeEditorWindow.behaviourTree)
{
SelectNodeButDontChangeProjectView();
}
GenericMenu menu = new GenericMenu();
AddInsertNewParentOptions(menu);
AddMoveOption(menu);
menu.AddItem(new GUIContent("Delete Node"), false, DeleteNodeCallback);
menu.ShowAsContext();
current.Use();
}
else if (current.type.Equals(EventType.DragExited))
{
Object taskScriptAsset = DragAndDrop.objectReferences[0];
if (!(taskScriptAsset is MonoScript))
{
current.Use();
return;
}
System.Type taskType = (taskScriptAsset as MonoScript).GetClass();
ScriptableObject so = ScriptableObject.CreateInstance(taskType);
if (!(so is BehaviourTreeTask))
{
current.Use();
return;
}
BehaviourTreeTask oldTaskToRemove = node.task;
node.task = so as BehaviourTreeTask;
node.contextLink.Clear();
PropertyReader.Variable[] variables = PropertyReader.GetFields(node.task.GetType());
foreach (PropertyReader.Variable variable in variables)
{
if (variable.name.StartsWith("in_") || variable.name.StartsWith("out_"))
{
node.contextLink.Add(variable.name, variable.name.Split('_')[1]);
}
}
node.displayedName = taskType.ToString();
AddTaskToAssets(node, oldTaskToRemove);
BehaviourTreeEditorWindow.SaveBehaviourTree();
this.selectedNode = node;
Selection.activeObject = taskScriptAsset;
SelectNodeButDontChangeProjectView();
current.Use();
}
else if (current.type == EventType.MouseDown && current.button == 0 && current.clickCount == 2)
{
this.selectedNode = node;
if (Selection.activeObject != BehaviourTreeEditorWindow.behaviourTree)
{
SelectNodeButDontChangeProjectView();
}
MonoScript monoscript = MonoScript.FromScriptableObject(node.task);
string scriptPath = AssetDatabase.GetAssetPath(monoscript);
UnityEditorInternal.InternalEditorUtility.OpenFileAtLineExternal(scriptPath, 0);
current.Use();
}
else if (current.type == EventType.MouseDown && current.button == 0)
{
this.selectedNode = node;
if (Selection.activeObject != BehaviourTreeEditorWindow.behaviourTree)
{
SelectNodeButDontChangeProjectView();
}
current.Use();
}
}