Jumping Boxes

Hello again! I have another animation for you made in p5js. As usual, the editor and the code at the bottom.

Use if you want better quality and modify the animation:
CODE: https://pastebin.com/crXj9Hs4
EDITOR: https://alpha.editor.p5js.org/

P.S. Do you have any tips on how to make high-quality gifs using one program?