python練習實例——用curses在終端實現貪喫蛇小遊戲

   curses包的封裝用於實現終端無關的控制檯輸出以及輸入處理。curses包支持各種終端，從古老的VT100到LINUX控制檯到X11終端如xterm或rxvt。而python中的curses模塊是對curses包的C語言的簡單封裝，並對curses的調用做了簡化，將C接口中的addstr, mvaddstr, mvwaddstr三個函數合併成了一個單獨的addstr函數。

   前幾天在b站上看到一個外國小哥的視頻，用curses寫了一個簡單的貪喫蛇遊戲，代碼不到80行，感覺很有意思。不過有點小bug，我自己動手實現了一下，做了一些完善並附上了註釋，在這裏記錄並分享一下（注意：curses包只能在linux下使用，如果是windows，可以用unofficial curses）

import curses
import random

# initialize the window
s = curses.initscr()
curses.curs_set(0)
hei, wei = s.getmaxyx()  # the value of first getting is y,not x
w = curses.newwin(hei, wei, 0, 0)
w.keypad(1)
w.timeout(100)

# initialize the position of snake
sn_x = int(wei/4)
sn_y = int(hei/2)
snake = [[sn_y, sn_x], [sn_y, sn_x-1], [sn_y, sn_x-2]]

# initialize the position of food
food_pos = [int(hei/2), int(wei/2)]
w.addch(food_pos[0], food_pos[1], '$')

key = curses.KEY_RIGHT

# start
while True:
    next_key = w.getch()  # The program stops waiting for user input. If not input for 100 milliseconds,go on
    if next_key != -1:  # got the input char
        if key == curses.KEY_RIGHT and next_key != curses.KEY_LEFT \
                or key == curses.KEY_LEFT and next_key != curses.KEY_RIGHT \
                or key == curses.KEY_DOWN and next_key != curses.KEY_UP \
                or key == curses.KEY_UP and next_key != curses.KEY_DOWN:
                key = next_key
            
    # the situation of death
    if snake[0][0] in [0, hei] or snake[0][1] in [0, wei] or snake[0] in snake[1:]:
        curses.endwin()
        quit()

    # update the 'snake'
    temp = snake[0][0]
    temp2 = snake[0][1]
    new_head = [temp, temp2]
    if key == curses.KEY_RIGHT:
        new_head[1] += 1
    if key == curses.KEY_LEFT:
        new_head[1] -= 1
    if key == curses.KEY_DOWN:
        new_head[0] += 1
    if key == curses.KEY_UP:
        new_head[0] -= 1
    snake.insert(0, new_head)

    # the situation of eating food
    if snake[0] == food_pos:
        food_pos = None
        while food_pos is None:
            new_food = [random.randint(1, hei-1), random.randint(1, wei-1)]
            if new_food not in snake:
                food_pos = new_food
        w.addch(food_pos[0], food_pos[1], '$')
    else:
        tail = snake.pop()
        w.addch(tail[0], tail[1], ' ')  # remove the tail

    # snake move
    w.addch(snake[0][0], snake[0][1], '@')

代碼寫好後，在程序所在的目錄開啓終端，運行對應的sh文件就可以玩了

謝謝觀看:)