Changing directions with the same key press

Hello,

I have my game set up with 0 deceleration, and I'm trying to have a single key press control left or right (using 8 direction). Basically, I'd like to hit the right arrow and have it move right until I press the right arrow again, at which point it moves left instead.

Any chance someone knows how to accomplish this/if its possible?

8 direction has a revert action.

It will invert the movement direction.