Hard Vacuum: Keep the Ship Clean!

I'm working on my first Pico-8 game in which you are a robot vacuum aboard a space ship. My working title is "Hard Vacuum," which is a pun I'm fairly proud of 😅 I've implemented basic movement for the character and a not super efficient method of drawing a trail following the vacuum. This will be used as visual feedback as well as for score calculation. I had hoped that I could fill a circle with a pattern that was half color, half transparent, but apparently that doesn't apply to the fill functions 🥲 Needed a break from coding, so I started on some sprites for the map. CC Welcome!