c = str(msvcrt.getch()) # 输入读取 无需回车
if c == "b'q'":
running = False
elif c == "b'w'":
snake.set_toward("UP")
elif c == "b's'":
snake.set_toward("DOWN")
elif c == "b'a'":
snake.set_toward("LEFT")
elif c == "b'd'":
snake.set_toward("RIGHT")
input_thread = InputThread()
input_thread.start() # 启动子线程，负责输入读取
while running:
death = snake.action(bug, wall.points)
if death:
print("小蛇死了，\n按Q键退出")
break
displayer.extend_point(wall.points)
displayer.extend_point(snake.points)
displayer.extend_point(bug.point)
# 绘制图像
displayer.draw_graphics(snake.score)
displayer.clear() # 清空这一帧的数据
time.sleep(snake.sleep_time)
