Ordering z-order, or layers, of sprites. This project uses the most efficient method I've seen thus far. @griffpatch uses it in several of his projects, and he explains it really well in his tutorial: https://youtu.be/bxjbYJLAUYU Give credit to @griffpatch if you use any code in this project. I just added very simple math to add some perspective. I'm basically sharing this project so that I can find the code myself in the future ;)
