Hey! Thank you for your dropping in and leaving a feedback.
I really like doing tiny projects this way to practice specific mechanics. I was studying game juice and this felt like the easiest way to practice it. Doing projects this way gives me ideas for other projects, so i will probably reuse this in the future
The background.gd script was made with the help of AI, because I couldn't get the loop effect right. And the punch animation on the HP bar was also corrected with AI. But everything else was written by me.
This is still a work in progress, and I will take a look at your ideia to refactor background.gd. And I totally forgot about ProgressBars.
Anyway, thank you for the thorough analysis.