Sound
For those looking for more interactive content like this, albeit with more of a game dev focus, I highly recommend <a href="https://www.redblobgames.com" rel="nofollow">https://www.redblobgames.com</a><p>One of my favorite articles is this one on hex grids: <a href="https://www.redblobgames.com/grids/hexagons/" rel="nofollow">https://www.redblobgames.com/grids/hexagons/</a>
it blew my mind the first time I noticed that all the interactions and code change when you toggle between "flat topped" and "pointy topped".