I got through part 10, but noticed that my HP display had stopped working. It looks like you made some changes to hp_display.gd that aren't referenced in the actual tutorial. Once I made the change, it worked.
$ diff part_9/src/GUI/hp_display.gd part_10/src/GUI/hp_display.gd
8c8,9
< await ready
---
> if not is_inside_tree():
> await ready
I got through part 10, but noticed that my HP display had stopped working. It looks like you made some changes to hp_display.gd that aren't referenced in the actual tutorial. Once I made the change, it worked.