"```python
import random
import curses
# 初始化窗口
s = curses.initscr()
curses.curs_set(0)
sh, sw = s.getmaxyx()
w = curses.newwin(sh, sw, 0, 0)
w.keypad(1)
w.timeout(100)
# 蛇的初始位置
snk_x = sw//4
snk_y = sh//2
snake = [
[snk_y, snk_x],
[snk_y, snk_x-1],
[snk_y, snk_x-2]
]
# 食物的初始位置
food = [sh//2, sw//2]
w.addch(int(food[0]), int(food[1]), curses.ACS_PI)
# 初始方向
key = curses.KEY_RIGHT
# 游戏主循环
while True:
next_key = w.getch()
key = key if next_key == -1 else next_key
# 检查蛇是否撞到边界或自己
if (snake[0][0] in [0, sh] or
snake[0][1] in [0, sw] or
snake[0] in snake[1:]):
curses.endwin()
quit()
# 检查蛇是否吃到食物
new_head = [snake[0][0], snake[0][1]]
if key == curses.KEY_DOWN:
new_head[0] += 1
if key == curses.KEY_UP:
new_head[0] -= 1
if key == curses.KEY_LEFT:
new_head[1] -= 1
if key == curses.KEY_RIGHT:
new_head[1] += 1
snake.insert(0, new_head)
# 如果蛇没有吃到食物,就移除蛇尾
if snake[0] != food:
tail = snake.pop()
w.addch(int(tail[0]), int(tail[1]), ' ')
else:
food = None
while food is None:
nf = [
random.randint(1, sh-1),
random.randint(1, sw-1)
]
food = nf if nf not in snake else None
w.addch(food[0], food[1], curses.ACS_PI)
w.addch(int(snake[0][0]), int(snake[0][1]), curses.ACS_CKBOARD)
```"