Yes, having a repl is a superpower. But soon enough you learn which things will find you the most bugs, so you start making a menu out of them. Teleporting to l

Yes, having a repl is a superpower. But soon enough you learn which things will find you the most bugs, so you start making a menu out of them. Teleporting to levels, spawning mobs, etc. In this case they were debugging the render, to fix problems that result in game’s own graphics being unusable. So they added their own system on top, so that they can inspect the data being sent to the gpu, turn on wireframes, etc. It’s a delightful look at what all of computing is going to look like in a thousand years, with layer upon layer of tooling as new generations of engineers adapt older programs to work on new systems. Remember “A Deepness in the Sky”?