vivid childhood memory of trying to learn how to use some ancient BSP map editor (I think for Descent?) and the instructional webpage I found started out by spending pages of text tortuously trying to explain that brushes are subtractive so the universe is an infinite cube of mass and rooms are made of negative mass that eats through the solid void and I'm just like "I am eleven years old what the actual fuck are you talking about" and gave up
monumentally dogshit way of explaining a concept lmao
"draw a box and then you walk around inside the box" there I explained BSP modeling. thats literally all you need to know dude
wasn't that Unreal? I seem to remember Quake editors all being "you have an infinite void so you need to bound your play space with brushes and if there are any gaps into the void the map will fail to compile", while UnrealEd at the time had the whole subtractive geometry concept going on and I distinctly recall going "what, that's nonsense"
I think Descent's editor was just "when you open a new map you'll have a Standard Cube as a starting point, and you can attach further cubes to any side of the cube and then deform them to shape your rooms. Have fun"
