29:Pillar_Build (tag, speed, height)
- tag: Tag of affected sector
- speed: Speed of the build
- height: Height (relative to floor) where the floor and ceiling meet
Raises the floor of a sector and lowers its ceiling so that they meet. The speed argument controls the speed of whichever part of the pillar has to move further, and the other part will have its speed set so that it arrives at its destination at the same time. If height is 0, then the floor and ceiling will meet halfway between their original positions. If tag is 0, then the sector on the line's back side is used.