Ah !
The door idea is good !
It would wok best with sliding doors though, because the edges of the door would have to be fully covered as thick as their pieces.
Say: the door is made up of 6 pieces, all one unit thick.
You would need to ensure the @ surface was completely blocking vis.
Like so:
Make sense ?
p.s. He means tex that begin with @.
Such as @TCblinds from ts_normandin.
They are passable to players & weapons, but nothing on the other side gets rendered.
