Just had a quick question for you guys: in my ventilation chamber area I'm planning on making a fairly large moving fan. I want the fan to kill on contact as well as move, and I was just wondering how I would go about this. Would it be possible to make a shader that does all this, or would I have to make a rotating brush for this to work? I have no experience with shaders outside of the pre-made light shaders so I'm really not sure what to do.