How to Limit Character movement?

I have a spaceship here that I want to be able to move left, right, up and down.

However, if you press the up and right arrow, it of course goes diagonal up and to the right.

Is there a way to limit the movement of the ship, so it can no longer travel in a diagonal direction?

I can find plenty of tutorials for movement and different ways to achieve the same thing, but all of them seem to still allow my character to move diagonally.

Yes you can, but something else must happen. For example you can have the spaceship going UP if you press UP+RIGHT key. Or you can simply make it stop moving.

I can add an example if you'd like.

I get what you're saying. If you have an example already that wouldn't be too hard for you to show, I'd really appreciate it!

if you are using the 8 direction behaviour you can set, on the left side, from 8 directions to 4.

Yeah I was using a different method, and changed it to 8 directions and found the 4. It seems to be working pretty well now. Thanks guys!