Doors With Triggers

Opening/Closing Doors

Make the mover

Add a static mover and then set it's keyframes. Like it moving up/down or side/side).

Set the Triggers

Then add triggers on both sides. Have the mover trigger toggled and then set the tag of the trigger to a unique name.

Then set the trigger's event to the name of the door mover (it's event-tag property).

Then set the mover's event to the tag of the trigger.

Polish/Finish

Add sounds to the door and your ready to go!