现在按照你的想法扩展程序！你可以试试：
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stage.set_background("city")
sprite = codesters.Sprite("bike")
sprite.set_size(0.5)
sprite.go_to(-200, 0)
stage.set_gravity(10)
stage.disable_all_walls()
def space_bar():
sprite.jump(5)
# add other actions...
stage.event_key("space", space_bar)
def interval():
# add any other actions...
top_height = random.randint(50, 300)
# sprite = codesters.Rectangle(x, y, width, height, "color")
top_block = codesters.Rectangle(300, 0, 100, top_height, "blue")
top_block.set_gravity_off()
top_block.set_top(250)
bot_height = 350 - top_height
# sprite = codesters.Rectangle(x, y, width, height, "color")
bot_block = codesters.Rectangle(300, 0, 100, bot_height, "blue")
bot_block.set_gravity_off()
bot_block.set_bottom(-250)
top_block.set_x_speed(-2)
bot_block.set_x_speed(-2)
stage.event_interval(interval, 5)
def collision(sprite, hit_sprite):
sprite.go_to(0,0)
# add any other actions...
# text = codesters.Text("text")
text = codesters.Text("GAME OVER!")
sprite.event_collision(collision)
