Challenge mode: undo buffer preserved.

[Laikulo]

Had a challenge that asked me to move a line, but I misstruck u, which restored the content of the previous part of the challenge, leading to some kerfuffling with undo/redo to get the actualy challenge problem.

[renzorlive]

Thanks for reporting this! I think I saw that behavior too, it’s something I’ll fix soon. Meanwhile, more challenges will be added to keep things interesting and smooth out the experience. Appreciate the feedback!

[iserioton]

Bug: Undo(u) is getting back to the previous levels. Whenever we hit the reset or update the level/challenge, we need to reset the undo/redo tree. _undoStack = []; _redoStack = [];

I'll try to fix this and submit the PR. This project is going to be very interesting.

[renzorlive]

Bug: Undo(u) is getting back to the previous levels. Whenever we hit the reset or update the level/challenge, we need to reset the undo/redo tree. _undoStack = []; _redoStack = [];

I'll try to fix this and submit the PR. This project is going to be very interesting.

Hi, and thank you for the bug report!
I really appreciate you taking the time to point this out. Just a quick heads-up: I’ve been working on a lot of new changes in the advanced-testing branch (new levels, new commands, etc.), but things are still quite buggy at the moment. I also have some updated code locally that I haven’t pushed yet.

It may take me a few more days to get everything in shape—life’s been extra busy this week with my little one keeping me on my toes. Thanks so much for your patience and support! Please wait a little bit with the PR so I can push the new changes.