Java logic.

I think you should put it right between update and positionupdate. I think loop could also be like this.

Also, delete position += diceroll line; position will be added within the loop.

Code:

boolean reach = false;
while(diceroll > 0)
   if(position == 32)
      reach = true;
   if(reach)
      position--;
   else
      position++;
   diceroll--;

That's the case you may need to animate the movement, but if you don't just use this

Code:

position += diceroll;
if(position > 32)
    position = 64 - position;