Thank you :) The whole smoke mechanic is a bit wacky sorry about that. when you touch a smoke pixel with the side of the roomba its not counted as consumed but still despawns i think. its some buggy behaviour that makes wiping the screen with the roomba a worse strategy than just hovering directly over a burning area.
The bar at the bottom right grows either left or right, with the middle being neutral. Shooting uses up some energy, and hovering over burning areas to absorb smoke gives you energy back.
When the bar goes full red you lose, and when it goes full blue you win. That’s all :D
Thanks for playing.