Obtaining a trigger event off a RigidBody
It is possible to cause a Trigger event to only fire off upon contact with a RigidBody thrown around in the scene under physics. This would be good in a case where a door at the bottom of some stairs is locked and you can't open it. Tipping over a fridge so it falls down some stairs under physics to break the locked door would offer a plausible solution and a good game play challenge.
How to do it...
Create a basic scene using the Midday Lighting map template. Set the GameType for PIE to UTGame. This is done through View | World Properties under Game Type.
Ensure the scene has a Trigger and a Mover at the same location animated by a Matinee action. The Matinee will be set to play when the Trigger is touched, so you'll need to add a Trigger Touch event in Kismet, but we want it so the player doesn't launch this event. So in the Trigger Touch event properties turn off Player Only.
In the Trigger Touch event's properties set the entry for Class Proximity...
