Arrow keys move Scratch cat. WASD keys move Pico! Use K and M to resize the cat. T and G to resize Pico. Press space to change which sprite is in front. Press I to invert the black and white pixels. (NEW!) Add any costumes you like...as long as they're black and white, the X-ray machine should still work!
I considerably sped up the scanning process here by building the list all in one go, and reducing laggy list manipulation commands. Thanks to @griffpatch for the original 16-frame Scratch cat walk cycle. https://scratch.mit.edu/projects/10045024/ Music: The Clash, London Calling, 1979
