TLDR:
When walls are open railguns should be able to shoot through those tiles without damaging the walls.
Why?
Since walls can be toggled with the signal network, this would allow railguns (and hopefully any team-damaging turrets added by mods, such as some cannon turret ones) to be implemented in wall defenses without having to be completely exposed. Using turrets or a mod for enemy proximity detection can allow them to be protected by walls which only close when enemies get too close, and the railgun or other turret can be disabled via power switch so it won't destroy it's defenses.
Change open walls to be immune to railguns
Moderator: ickputzdirwech

