# level 幾就有幾顆球
if ball_counter < level:
launcher.launch_balls(ball_group)
ball_counter += 1
else:
state = "hit"
first_killed_ball_x = None
elif state == "hit":
# 第一顆球落下的位置會是下一次發射的位置
if first_killed_ball_x == None:
for ball in ball_group:
first_killed_ball_x = ball.get_killed_x()
if first_killed_ball_x != None:
launcher.set_pos_x(first_killed_ball_x)
break
# 所有的球都掉下來了 或 按up
keys = pygame.key.get_pressed()
if len(ball_group) == 0 or keys[pygame.K_UP]:
for ball in ball_group:
ball.kill()
state = 'new_block'
level += 1
elif state == "new_block":
for i in range(7):
# 若場面上的方塊大於8個，每一個位子有0.3的機率生成方塊，否則是0.6
if len(block_group) > 8:
prob = 0.3
else:
