public void TickNode(BT_BaseNode node)
 {
 }
 public void OpenNode(BT_BaseNode node)
 {
 }
 public void EnterNode(BT_BaseNode node)
 {
     openNodes.Add(node);
 }
 public void ExitNode(BT_BaseNode node)
 {
 }
 public void CloseNode(BT_BaseNode node)
 {
     openNodes.Remove(node);
 }