It’s very hard, that’s why I’m asking. But the guy who tried got 2/3rds of the code done. Even got alot of the face code done (3d formats have to import both vertex and face data, vertex first, then face). He quit tho and hasn’t touched the code for 4 years.
I myself have done a map format: wolfenstine:enemyterritory, for this engine. So I know how hard it is. So that’s why I ask.