This is my first post here, so greetings everyone! 😀

But i was curious how to code in collisions
like bumping into walls and enemies.
And creating boundaries for my levels.

Thanks everyone 😊

I'd take a look at the code in the starter pack here:

https://www.lexaloffle.com/bbs/?pid=37157&tid=28793

Just take a look at the examples included in pico-8.

Also the pico zines have examples.

And this might be helpful https://www.gamedev.net/articles/programming/general-and-gameplay-programming/collision-detection-r735