Question

我目前正在使用python（IDLE 3.6.0）制作一个蛇游戏，并且它不断出现一个名为'break'的循环外部错误。那是什么意思？我究竟做错了什么。这是我第一次遇到这个错误。

这是我的代码：

# SNAKES GAME
# Use ARROW KEYS to play, SPACE BAR for pausing/resuming and Esc Key for exiting

import curses
from curses import KEY_RIGHT, KEY_LEFT, KEY_UP, KEY_DOWN
from random import randint


curses.initscr()
win = curses.newwin(20, 60, 0, 0)
win.keypad(1)
curses.noecho()
curses.cur_set(0)
win.border(0)
win.nodelay(1)

key = KEY_RIGHT                                          # Initalizing Values
score = 0

snake = [[4,10], [4,9], [4,8]]                          # Initial snake co-ordinates
food = [10,20]                                          # First food co-ordinates                         

win.addc(food[0], food[1], '*')                             # Prints the food

while key != 27:
    win.border(0)
    win.addstr(0, 2, 'Score :' + str(score) + ' ')          # Printing 'Score' and      
    win.addstr(0, 27, ' SNAKE ')                            # 'SNAKE' strings
    win.timeout(150 - (len(snake)/5 + len(snake)/10)%120)

    prevKey = key                                           # Previous key pressed
    event = win.getch
    key = key if event == -1 else event


    if key == ord(' '):                                     # If SPACE BAR is pressed, wait for another
        key = -1                                            # one (Pause/Resume)
        while key != ord(' '):
            key = win.getch()
    key = prevKey
    continue

if key not in [KEY_LEFT, KEY_RIGHT, KEY_UP, KEY_DOWN, 27]:  # If an invalid key is pressed
    key = prevKey

    # Calculates the new coordinates of the head of the snake. NOTE: len(snake) increases.
    # This is taken care of later at [1].
    snake.insert(0, [snake[0][0] + (key == KEY_DOWN and 1) + (key == KEY_UP and -1), snake[0][1] + (key == KEY_LEFT and -1) + (key == KEY_RIGHT and 1)])

    # If snake crosses the boundaries, make it enter from the other side                
    if snake[0][0] == 0: snake[0][0] = 18
    if snake[0][1] == 0: snake[0][1] = 58
    if snake[0][0] == 19: snake[0][0] = 1
    if snake[0][1] == 59: snake[0][1] = 1

    # Exit if snake crosses the boundaries (Uncomment to enable)
    # if snake[0][0] == 0 or snake[0][0] == 19 or snake[0][1] == 0 or snake[0][1] == 59: break

    # If snake runs over itself
    if snake[0]in snake[1:]:  break


    if snake[0] == food:
        food = []                                                                                                                           
        score += 1
        while food == []:
            food = [randint(1, 18), randint(1, 58)]
            if food in snake: food = []
        win.addch(food[0], food[1], '*')
    else:                                                                                                                       
        last = snake.pop()
        win.addch(last[0], last[1], ' ')
    win.addch(snake[0][0], snake[0][1], '#')                                                                                                                               

curses.erdwin()
print("\nScore - " + str(score))
print("http://bitemelater.in\n")

如果你能提供帮助，我会很高兴的！谢谢！

Answer 1

if snake[0]in snake[1:]: break行是您的错误产生的地方。您可能希望使用某种游戏结束功能来显示积分和高分等等：

def end_game():
    #do your game ending things here

然后你会在这里调用该函数：

if snake[0]in snake[1:]:  end_game()

修改

我发现这与你的诅咒错误有关：Error no module named curses。好像curses不支持Windows机器。尝试安装UniCurses或this binary。

在蛇游戏中“打破”外循环

1 个答案: