Simplest way to create map from Sketchfab?

[stevennt]

What would be the easiest way to import a map, say from Sketchfab, to Unvanquished?
Lets say the map is a tube like below. Any tip? Thanks.

https://sketchfab.com/3d-models/metro-tube-46b6647a48c74a05a793875a3baf045a

[illwieckz]

The recommended map editor, NetRadiant, knows how to import .obj and .ase files.

You'll find my most recent Linux build there:
https://forums.xonotic.org/showthread.php?tid=8108&pid=85047#pid85047
Or you can build it from source by following instructions there:
https://gitlab.com/xonotic/netradiant#getting-the-sources
Note that if you build NetRadiant from source you'll miss the tool to compute (optional) navigation meshes for bots, you can find source for it there:
https://github.com/DaemonEngine/daemonmap

So the idea is to export your Sketchfab model as .ase or .obj (I don't know what is better), import it in NetRadiant and build the .map with q3map2 map compiler (shipped with NetRadiant) like other idtech3 games.

[illwieckz]

Note that model has a lot of faces, it may be good to set all of them as details ones and put them within some simple structural brushes.