Added code so that exit doors will search for a destination and place a platform for the player on the other side. However, the search function only searches upward, not downward. I'd like to discuss some details about this before completing the implementation: 1. How should the search work? 2. What should be the likelihood of a dungeon exit leading to a different root dimension than the dungeon's actual root? I've tested the exits and they're working well.
DimDoors
Dimensional Doors for Minecraft Adds several items that allow the player to move between and create dimensions
see the MC forum topic for details