Compass Commands adds a few commands to set the compass target. This mod can be either on the server or the client; it works either way.
/compass set x y z- Sets the compass target to the coordinates. Theydoesn't really matter, but it has to be there anyway.~can be used./compass north|south|east|west|northwest|northeast|southwest|southeast- Sets the compass target to the specified cardinal direction./compass spawn- Sets the compass target to the world spawn./compass current- Functionally equivalent to/compass set ~ ~ ~.