Bullet impact trigger (Half-Life 2 SP)
I want to have a door that will open and close when an crossbow bolt hits a box. It doesn't seem like a very difficult concept but I just can't figure it out or find any tutorials. I just can't figure out how to make the bolt (or any bullet) activate a trigger.

Any advice?
Last edited by OttermaticRifle; 15 Apr, 2013 @ 5:50pm