Your team has moved on from the spacecraft bridge user interface to programming the manual controls of the robots. There are $4$ keys able to control a robot on a $2$D surface, $,,,.$ One of your team members has programmed a function to retrieve the input of a key as a $2$D vector.

Your code will be run every time a key is pressed and it should determine the direction that the robot should move in$.$ The final function in your code should be the one above. Your teammate notes that the direction should never exceed a length of $1.$

The answer needs to be a flow with the mathematical functions for each step