Microbit games

timing.py

import microbit

tolerance=500 # milliseconds

def game():
    target_time = 3 + microbit.random(5)
    microbit.display.scroll('Guess ' + str(target_time))
    for n in '321':
        microbit.display.print(n)
        microbit.sleep(1000)
    microbit.display.print(' ')
        
    then = microbit.running_time()
    while not microbit.button_a.is_pressed():
        pass
    now = microbit.running_time()

    diff = abs((now - then) - 1000*target_time)
    if diff < tolerance:
        microbit.display.print(microbit.Image.HAPPY)
        microbit.sleep(3000)
    else:
        microbit.display.print(microbit.Image.SAD)
        microbit.sleep(2000)
        microbit.display.scroll(str(diff) + 'ms away')
        microbit.sleep(1000)

while True:
    game()

treasure.py

import microbit

def clock_dist(a, b):
    if a > b:
        a, b = b, a
    d1, d2 = b - a, 360 - (b - a)
    return min(d1, d2)

microbit.display.print(microbit.Image.NO)
microbit.compass.calibrate()
while microbit.compass.is_calibrating():
    pass

def one_game():
    target_h = microbit.random(360)
    tolerance = 20
    while True:
        h = microbit.compass.heading()
        d = clock_dist(h, target_h) / float(tolerance)
        if d < 1.0:
            microbit.display.print(microbit.Image.YES)
            microbit.sleep(2000)
            return
        else:
            microbit.display.print(str(int(d)))

while True:
    one_game()