From Eternity Wiki
8:350:Polyobj_DoorSlide(id, speed, angle, distance, delay)
- id: polyobject to move
- speed: speed of polyobject, by eighths of map unit per tic
- angle: byte angle direction to move to, when opening
- distance: how far to move when opening
- delay: time to stay open, in tics.
Slides the polyobject as a door, making it return to the original position after a set time. Cannot be retriggered to close the same way as Door_Raise.