/// <summary>Draw node's body GUI.</summary>
public override void OnBodyGUI()
{
base.OnBodyGUI();
_composite = target as BTCompositeNode;
// Only work the GUI for the current exits and entries.
int childCount = _composite.ChildCount;
// Render children ports.
EditorGUILayout.Space();
for (int i = 0; i < childCount; i++)
{
BTConnection connection = _composite.GetChildConnection(i);
NodePort port = target.GetOutputPort(connection.PortName);
NodePort connected = port.Connection;
if (connected == null)
{
_composite.RemoveChildConnection(i);
i--;
childCount--;
}
else
{
GUILayout.BeginHorizontal();
EditorGUILayout.Space();
NodeEditorGUILayout.PortField(new GUIContent((i + 1).ToString()), port, GUILayout.Width(50));
GUILayout.EndHorizontal();
}
}
// Check if we need to create new exit.
_newChild = target.GetOutputPort("newChild");
if (_newChild == null)
{
_newChild = target.AddInstanceOutput(typeof(BTConnection), Node.ConnectionType.Override, "newChild");
}
// If exit connection is not empty create new exit.
if (_newChild.Connection != null)
{
_composite.AddChildConnection(_newChild.Connection);
_newChild.Disconnect(_newChild.Connection);
}
GUILayout.BeginHorizontal();
EditorGUILayout.Space();
NodeEditorGUILayout.PortField(_newChild, GUILayout.Width(80));
GUILayout.EndHorizontal();
}
/// <summary>Execute the Behavior Tree.</summary>
protected override BTGraphResult InternalRun()
{
// Init loop.
int[] indices;
object value;
if (BT.Blackboard.variables.TryGetValue("CompositeIndices" + GetInstanceID(), out value))
{
indices = (int[])value;
}
else
{
indices = PrepareChildren();
}
// Traverse all children running them until break point.
BTGraphResult result = BTGraphResult.Failure;
for (int i = 0; i < indices.Length; i++)
{
// Run target child.
BTConnection connection = _children[indices[i]];
result = connection.Run();
// Break if result is running.
if (result.IsRunning)
{
indices = indices.Where((a, index) => index >= i).ToArray();
BT.Blackboard.variables["CompositeIndices" + GetInstanceID()] = indices;
break;
}
// Check if we need to break loop.
if (ShouldBreakLoop(result))
{
break;
}
}
// Reset running child index if not still running.
if (!result.IsRunning)
{
BT.Blackboard.variables.Remove("CompositeIndices" + GetInstanceID());
}
return(result);
}