Ah, see where you're coming from now.
Well, the simple way to do that is store the xyz of where you were and take the xyz of where you are away from it.
ie,
I was at 0,0,0 I am now at 5,3,2
so I moved 5 on X, 3 on Y and 2 on Z.
I'm now at 10,3,2
So I moved 5 on x, 0 on Y and 2 on Z.
Well, the simple way to do that is store the xyz of where you were and take the xyz of where you are away from it.
ie,
I was at 0,0,0 I am now at 5,3,2
so I moved 5 on X, 3 on Y and 2 on Z.
I'm now at 10,3,2
So I moved 5 on x, 0 on Y and 2 on Z.