MAIN INSTRUCTIONS: Move with your mouse to point. Space/left click to shoot. WASD to move the cannon, drag for mobile. Right arrow changes the map. I am working on coding the left arrow, due to a bug where the map doesn't show up.
The yellow smiley face skin doesn't work, so if you want it, either wait or go in the code and switch the "Cannon" costume. Thanks to @Griffpatch for making the "How to Make Physics in Scratch" video! More info on updates are in the update log.