Scene 2 UWMF is a new level creation tool for Wolfenstein 3D source ports. It allows you to create a scene using Godot and then convert that scene into a UWMF map that can be played using ECWolf or LZWolf.

If you have a copy of Spear of Destiny, then you can checkout the Scene 2 UWMF demo which features two maps created using Scene 2 UWMF. That demo also contains some information about how to start using Scene 2 UWMF.