I've seen several carts that implement a cool "laser" bullet effect and without seeing the code, wanted to be sure I was able to reproduce an approximation to the effect without botching collision detection.
Thanks to doc_robs for his splendid series of videos where concisely and with patience explains how to properly do hit box collisions on sprites:
In my journey I still need to learn, amongst many other things, to be able to do better sprite animations. But I must admit I love pico-8 for what it is: an amazing platform that favours convention over configuration so one can quickly prototype and publish an idea without getting bogged down on platform or delivery choices.
It's so cool to be able to have an idea and just quickly cook something up. And the amount of published gems from incredibly talented people on splore is at the same time inspiring and humbling.