I developed this project as an attempt to learn more about the functional programming principles and while going through the How To Design Programs (HTDP) book and the How to Code: Simple Data edx online course by Gregor Kiczales, which is based on the same book.
I modified the code a bit to make it work with Racket instead of the Beginning Student Language, and my plan is to keep working on it as I learn more things about Racket.
Press left, right to move the vaccine and space to fire a shot ;) When a virus hits the ground it's game over amigo.
Build dependencies with raco pkg install
Then run raco exe --ico icons/logo_ico.ico --icns icons/logo_ico.icns --gui covid-invaders.rkt to generate an executable for you.
Execute racket covid-invaders.rkt from the command line.