For jumping, I might tie a teleport function to an item on use, gets your position and direction facing, and teleports you 5-10m into that direction, or something like that. Not entirely sure how to script that, but I think it'd be possible. Also not sure what would happen if you used it to try and teleport into a non-AI grid area, but I think it would just send you to the edge of the non-walkable area.
