This mechanic shows how to implement movement in 2D for a user's character using a set of input keys. The code below is implemented using the WASD and arrow keys, common sets for many games.

There's support for movement keys (d-pad, WASD), start (enter), select (esc) and 8 action buttons for up to 4 players, though only the first player gets the mapping for keyboard out of the box. In ...