The original article is here: https://www.gridsagegames.com/blog/2018/10/how-to-make-a-rog...
The author is the creator of the popular commercial roguelike, Cogmind.
The author is the creator of the popular commercial roguelike, Cogmind.
Even made some CSS graphs for it (slightly outdated): https://hypertele.fi/8b7ac4d1cbecbf8b