@psychicparrot42 @crussel Project Shinar is mostly blueprint.
There are some C++ classes in there, primarily a NavigationInstanceSubsystem that handles the grid-based pathfinding and conversion from grid positions to "forward", "turn left", "turn right", etc commands that robots and NPCs follow.
Now whether that's a good idea or not is another matter entirely. So far it's mostly working okay (electric nodes really does help). But I am also a muppet, so it may bite me terribly at some point!