left, right, up, down = False, False, False, False

def keyPressed():
    global left, right, up, down
    left = True if keyCode == LEFT else left
    right = True if keyCode == RIGHT else right
    up = True if keyCode == UP else up
    down = True if keyCode == DOWN else down

def keyReleased():
    global left, right, up, down
    left = False if keyCode == LEFT else left
    right = False if keyCode == RIGHT else right
    up = False if keyCode == UP else up
    down = False if keyCode == DOWN else down

#---------------------------

def setup():
    pass

def draw():
    pass