I'm making a 3D game and I hate flat worlds, a planet is much more elegant, both finite and infinite in gameplay terms since the surface is not expandable, but you can't hit a world border at the same time.

Cartesian coordinates doesn't work well for the player so I wanted a lat/long/altitude grid system.

I could have spent few days walking through stackoverflow and debuging my upcoming flawed implementation.

ChatGPT web version almost one shot the helpers in 2024 and boy, there were a lot of pitfalls.