预览：现在我们的 micro:bit 已连接，让我们看一个您今天将要制作的项目的示例。
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microbit = codesters.Microbit()
microbit.show_string("hello")
ball = codesters.Sprite("soccerball")
ball.set_x_speed(5)
ball.set_y_speed(5)
ball.set_size(0.75)
stage.set_background("soccerfield")
sprite = codesters.Sprite("athlete2")
sprite.move_down(140)
def button_a():
sprite.move_left(50)
microbit.event_button_a(button_a)
def button_b():
sprite.move_right(50)
microbit.event_button_b(button_b)
def collision(sprite, hit_sprite):
my_var = hit_sprite.get_y_speed()
hit_sprite.set_y_speed(-my_var + 1)
my_var = hit_sprite.get_x_speed()
hit_sprite.set_x_speed(my_var + 1)
sprite.event_collision(collision)
stage.disable_floor()
