How to make improvement impassable?

[Lutefisk Mafia]

Arggh!

Terrains and terrain features can be impassable, but terrain improvements do not have the "impassable" tag as a part of the XML Infos entry.

Does anyone know of a workable way to make a terrain improvement impassable? I need to be able to do this for a mod I'm working on.

Thanks!

 

[Lutefisk Mafia]

Never mind. I gave up on this and implemented the fuctionality I was seeking by making multiple versions of a terrain feature instead.