How to make a door bang when walking into an area?

[MissMarilynn]

Would that make it move a bit without opening as if there was pressure on it? Or make dust come off it like it moved?

Yeah, and AddPropImpulse should leave the door as it was before the impulse effect once the impulse has finished. The dust, however, will have to be created with CreateParticleSystemAtEntity.

Mmkay and I was trying to figure that out earlier to. How do I make a particle system start when I walk into an area?

Thanks for responding to all of my threads by the way haha. You've been a great help.