Merge pull request BehaviorTree#162 from unvestigate/master

facontidavide · web-flow · commit 963c1692135c · 2020-03-19T12:35:50.000+01:00
Tree is declared as a struct, so it needs to be forward-declared as a…
diff --git a/include/behaviortree_cpp_v3/tree_node.h b/include/behaviortree_cpp_v3/tree_node.h
@@ -153,7 +153,7 @@ class TreeNode
     friend class BehaviorTreeFactory;
     friend class DecoratorNode;
     friend class ControlNode;
-    friend class Tree;
+    friend struct Tree;
 
     // Only BehaviorTreeFactory should call this
     void setRegistrationID(StringView ID)
