We can move our space craft on the left or on the right with 'q' and
'd', and we ask to the user where we want to go. But We have to improve
it, especially if we are over of the end grid or if we don't want move.

Update By Morgan Thevenin
We can move on the right or on the left with " q " or " d "

now we have to improve this movement especially if we are over the end's
grid or if we don't want move.

Update by Morgan Thevenin