from time import sleep


handlers = {}
STATE = 'idle'  # Also walk, imitate and fallen


def fall_handler():
    pass


def walk_handler():
    pass


def imitation_handler():
    pass


def handle_transition(new_state):
    global STATE
    if STATE == 'walk':
        if new_state in ('fallen', 'idle'):
            STATE = new_state
    elif STATE == 'fallen':
        if new_state == 'idle':
            STATE = new_state
    elif STATE == 'imitate':
        STATE = new_state


if __name__ == '__main__':
    pass
    # initialize stuff