這次我們基於 pygame 來做一個掃雷，上次有園友問我程式碼的 python 版本，我說明一下，我所有的程式碼都是基於 python 3.6 的。

先看截圖，仿照 XP 上的掃雷做的，感覺 XP 上的樣式比 win7 上的好看多了。

原諒我手殘，掃雷基本就沒贏過，測試的時候我是偷偷的把雷的數量從99改到50才贏了。。。

程式碼雖然不多，但加上註釋和空行也有350行，另外還有一些圖片資源，就不全帖上來了，完整的程式碼和資源我放到CSDN上了，感興趣的小夥伴可以去下載一下。下載地址

下面將一下我的實現邏輯。

首先，如何表示雷和非雷，一開始想的是，建立一個二維陣列表示整個區域，0表示非地雷，1表示地雷。後來一想不對，還有標記為地雷，標記為問號，還有表示周邊雷數的數字，好多狀態，乾脆就做個類吧

class BlockStatus(Enum):
    normal = 1  # 未點選
    opened = 2  # 已點選
    mine = 3    # 地雷
    flag = 4    # 標記為地雷
    ask = 5   # 標記為問號
    bomb = 6    # 踩中地雷
    hint = 7    # 被雙擊的周圍
    double = 8  # 正被滑鼠左右鍵雙擊


class Mine:
    def __init__(self, x, y, value=0):
        self._x = x
        self._y = y
        self._value = 0
        self._around_mine_count = -1
        self._status = BlockStatus.normal
        self.set_value(value)

    def __repr__(self):
        return str(self._value)
        # return f'({self._x},{self._y})={self._value}, status={self.status}'

    def get_x(self):
        return self._x

    def set_x(self, x):
        self._x = x

    x = property(fget=get_x, fset=set_x)

    def get_y(self):
        return self._y

    def set_y(self, y):
        self._y = y

    y = property(fget=get_y, fset=set_y)

    def get_value(self):
        return self._value

    def set_value(self, value):
        if value:
            self._value = 1
        else:
            self._value = 0

    value = property(fget=get_value, fset=set_value, doc='0:非地雷 1:雷')

    def get_around_mine_count(self):
        return self._around_mine_count

    def set_around_mine_count(self, around_mine_count):
        self._around_mine_count = around_mine_count

    around_mine_count = property(fget=get_around_mine_count, fset=set_around_mine_count, doc='四周地雷數量')

    def get_status(self):
        return self._status

    def set_status(self, value):
        self._status = value

    status = property(fget=get_status, fset=set_status, doc='BlockStatus')
 

佈雷就很簡單了，隨機取99個數，從上往下順序排就是了。

class MineBlock:
    def __init__(self):
        self._block = [[Mine(i, j) for i in range(BLOCK_WIDTH)] for j in range(BLOCK_HEIGHT)]

        # 埋雷
        for i in random.sample(range(BLOCK_WIDTH * BLOCK_HEIGHT), MINE_COUNT):
            self._block[i // BLOCK_WIDTH][i % BLOCK_WIDTH].value = 1
 

我們點選一個格子的時候，只要根據點選的座標，找到對應的 Mine，看它的值是多少，就知道有沒有踩中雷了。

如果沒踩中雷的話，要計算周邊8個位置中有幾個雷，以便顯示對應的數字。

如果周邊有雷，那麼顯示數字，這個簡單，可是如果周邊沒有雷，那就要顯示一片區域，直到有雷出現，如下圖，我只點了當中一下，就出現了那麼大一片區域

這個計算其實也容易，只要用遞迴就可以了，如果計算出周圍的雷數為0，則遞迴計算周邊8個位置的四周雷數，直到雷數不為0。

class MineBlock:
​​​​​​​　　def open_mine(self, x, y):
        # 踩到雷了
        if self._block[y][x].value:
            self._block[y][x].status = BlockStatus.bomb
            return False

        # 先把狀態改為 opened
        self._block[y][x].status = BlockStatus.opened

        around = _get_around(x, y)

        _sum = 0
        for i, j in around:
            if self._block[j][i].value:
                _sum += 1
        self._block[y][x].around_mine_count = _sum

        # 如果周圍沒有雷，那麼將周圍8個未中未點開的遞迴算一遍
        # 這就能實現一點出現一大片開啟的效果了
        if _sum == 0:
            for i, j in around:
                if self._block[j][i].around_mine_count == -1:
                    self.open_mine(i, j)

        return True


def _get_around(x, y):
    """返回(x, y)周圍的點的座標"""
    # 這裡注意，range 末尾是開區間，所以要加 1
    return [(i, j) for i in range(max(0, x - 1), min(BLOCK_WIDTH - 1, x + 1) + 1)
            for j in range(max(0, y - 1), min(BLOCK_HEIGHT - 1, y + 1) + 1) if i != x or j != y]

接下來還有一個麻煩的地方，我們經常滑鼠左右鍵同時按下，如果雷被全部標記，則會一下子開啟周圍所有的格子，如果其中有標記錯的，那麼不好意思，GAME OVER。

如果沒有全標記完，會有一個效果顯示周圍一圈未被開啟和標記的格子

class MineBlock:
​​​​​​​　　 def double_mouse_button_down(self, x, y):
        if self._block[y][x].around_mine_count == 0:
            return True

        self._block[y][x].status = BlockStatus.double

        around = _get_around(x, y)

        sumflag = 0     # 周圍被標記的雷數量
        for i, j in _get_around(x, y):
            if self._block[j][i].status == BlockStatus.flag:
                sumflag += 1
        # 周邊的雷已經全部被標記
        result = True
        if sumflag == self._block[y][x].around_mine_count:
            for i, j in around:
                if self._block[j][i].status == BlockStatus.normal:
                    if not self.open_mine(i, j):
                        result = False
        else:
            for i, j in around:
                if self._block[j][i].status == BlockStatus.normal:
                    self._block[j][i].status = BlockStatus.hint
        return result

    def double_mouse_button_up(self, x, y):
        self._block[y][x].status = BlockStatus.opened
        for i, j in _get_around(x, y):
            if self._block[j][i].status == BlockStatus.hint:
                self._block[j][i].status = BlockStatus.normal

掃雷的主要邏輯就這麼多，剩下來的就是一些雜七雜八的事件了。程式碼也帖一下吧

import sys
import time
from enum import Enum
import pygame
from pygame.locals import *
from mineblock import *


# 遊戲螢幕的寬
SCREEN_WIDTH = BLOCK_WIDTH * SIZE
# 遊戲螢幕的高
SCREEN_HEIGHT = (BLOCK_HEIGHT + 2) * SIZE


class GameStatus(Enum):
    readied = 1,
    started = 2,
    over = 3,
    win = 4


def print_text(screen, font, x, y, text, fcolor=(255, 255, 255)):
    imgText = font.render(text, True, fcolor)
    screen.blit(imgText, (x, y))


def main():
    pygame.init()
    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
    pygame.display.set_caption('掃雷')

    font1 = pygame.font.Font('resources/a.TTF', SIZE * 2)  # 得分的字型
    fwidth, fheight = font1.size('999')
    red = (200, 40, 40)

    # 載入資源圖片，因為資原始檔大小不一，所以做了統一的縮放處理
    img0 = pygame.image.load('resources/0.bmp').convert()
    img0 = pygame.transform.smoothscale(img0, (SIZE, SIZE))
    img1 = pygame.image.load('resources/1.bmp').convert()
    img1 = pygame.transform.smoothscale(img1, (SIZE, SIZE))
    img2 = pygame.image.load('resources/2.bmp').convert()
    img2 = pygame.transform.smoothscale(img2, (SIZE, SIZE))
    img3 = pygame.image.load('resources/3.bmp').convert()
    img3 = pygame.transform.smoothscale(img3, (SIZE, SIZE))
    img4 = pygame.image.load('resources/4.bmp').convert()
    img4 = pygame.transform.smoothscale(img4, (SIZE, SIZE))
    img5 = pygame.image.load('resources/5.bmp').convert()
    img5 = pygame.transform.smoothscale(img5, (SIZE, SIZE))
    img6 = pygame.image.load('resources/6.bmp').convert()
    img6 = pygame.transform.smoothscale(img6, (SIZE, SIZE))
    img7 = pygame.image.load('resources/7.bmp').convert()
    img7 = pygame.transform.smoothscale(img7, (SIZE, SIZE))
    img8 = pygame.image.load('resources/8.bmp').convert()
    img8 = pygame.transform.smoothscale(img8, (SIZE, SIZE))
    img_blank = pygame.image.load('resources/blank.bmp').convert()
    img_blank = pygame.transform.smoothscale(img_blank, (SIZE, SIZE))
    img_flag = pygame.image.load('resources/flag.bmp').convert()
    img_flag = pygame.transform.smoothscale(img_flag, (SIZE, SIZE))
    img_ask = pygame.image.load('resources/ask.bmp').convert()
    img_ask = pygame.transform.smoothscale(img_ask, (SIZE, SIZE))
    img_mine = pygame.image.load('resources/mine.bmp').convert()
    img_mine = pygame.transform.smoothscale(img_mine, (SIZE, SIZE))
    img_blood = pygame.image.load('resources/blood.bmp').convert()
    img_blood = pygame.transform.smoothscale(img_blood, (SIZE, SIZE))
    img_error = pygame.image.load('resources/error.bmp').convert()
    img_error = pygame.transform.smoothscale(img_error, (SIZE, SIZE))
    face_size = int(SIZE * 1.25)
    img_face_fail = pygame.image.load('resources/face_fail.bmp').convert()
    img_face_fail = pygame.transform.smoothscale(img_face_fail, (face_size, face_size))
    img_face_normal = pygame.image.load('resources/face_normal.bmp').convert()
    img_face_normal = pygame.transform.smoothscale(img_face_normal, (face_size, face_size))
    img_face_success = pygame.image.load('resources/face_success.bmp').convert()
    img_face_success = pygame.transform.smoothscale(img_face_success, (face_size, face_size))
    face_pos_x = (SCREEN_WIDTH - face_size) // 2
    face_pos_y = (SIZE * 2 - face_size) // 2

    img_dict = {
        0: img0,
        1: img1,
        2: img2,
        3: img3,
        4: img4,
        5: img5,
        6: img6,
        7: img7,
        8: img8
    }

    bgcolor = (225, 225, 225)   # 背景色

    block = MineBlock()
    game_status = GameStatus.readied
    start_time = None   # 開始時間
    elapsed_time = 0    # 耗時

    while True:
        # 填充背景色
        screen.fill(bgcolor)

        for event in pygame.event.get():
            if event.type == QUIT:
                sys.exit()
            elif event.type == MOUSEBUTTONDOWN:
                mouse_x, mouse_y = event.pos
                x = mouse_x // SIZE
                y = mouse_y // SIZE - 2
                b1, b2, b3 = pygame.mouse.get_pressed()
                if game_status == GameStatus.started:
                    # 滑鼠左右鍵同時按下，如果已經標記了所有雷，則開啟周圍一圈
                    # 如果還未標記完所有雷，則有一個周圍一圈被同時按下的效果
                    if b1 and b3:
                        mine = block.getmine(x, y)
                        if mine.status == BlockStatus.opened:
                            if not block.double_mouse_button_down(x, y):
                                game_status = GameStatus.over
            elif event.type == MOUSEBUTTONUP:
                if y < 0:
                    if face_pos_x <= mouse_x <= face_pos_x + face_size \
                            and face_pos_y <= mouse_y <= face_pos_y + face_size:
                        game_status = GameStatus.readied
                        block = MineBlock()
                        start_time = time.time()
                        elapsed_time = 0
                        continue

                if game_status == GameStatus.readied:
                    game_status = GameStatus.started
                    start_time = time.time()
                    elapsed_time = 0

                if game_status == GameStatus.started:
                    mine = block.getmine(x, y)
                    if b1 and not b3:       # 按滑鼠左鍵
                        if mine.status == BlockStatus.normal:
                            if not block.open_mine(x, y):
                                game_status = GameStatus.over
                    elif not b1 and b3:     # 按滑鼠右鍵
                        if mine.status == BlockStatus.normal:
                            mine.status = BlockStatus.flag
                        elif mine.status == BlockStatus.flag:
                            mine.status = BlockStatus.ask
                        elif mine.status == BlockStatus.ask:
                            mine.status = BlockStatus.normal
                    elif b1 and b3:
                        if mine.status == BlockStatus.double:
                            block.double_mouse_button_up(x, y)

        flag_count = 0
        opened_count = 0

        for row in block.block:
            for mine in row:
                pos = (mine.x * SIZE, (mine.y + 2) * SIZE)
                if mine.status == BlockStatus.opened:
                    screen.blit(img_dict[mine.around_mine_count], pos)
                    opened_count += 1
                elif mine.status == BlockStatus.double:
                    screen.blit(img_dict[mine.around_mine_count], pos)
                elif mine.status == BlockStatus.bomb:
                    screen.blit(img_blood, pos)
                elif mine.status == BlockStatus.flag:
                    screen.blit(img_flag, pos)
                    flag_count += 1
                elif mine.status == BlockStatus.ask:
                    screen.blit(img_ask, pos)
                elif mine.status == BlockStatus.hint:
                    screen.blit(img0, pos)
                elif game_status == GameStatus.over and mine.value:
                    screen.blit(img_mine, pos)
                elif mine.value == 0 and mine.status == BlockStatus.flag:
                    screen.blit(img_error, pos)
                elif mine.status == BlockStatus.normal:
                    screen.blit(img_blank, pos)

        print_text(screen, font1, 30, (SIZE * 2 - fheight) // 2 - 2, '%02d' % (MINE_COUNT - flag_count), red)
        if game_status == GameStatus.started:
            elapsed_time = int(time.time() - start_time)
        print_text(screen, font1, SCREEN_WIDTH - fwidth - 30, (SIZE * 2 - fheight) // 2 - 2, '%03d' % elapsed_time, red)

        if flag_count + opened_count == BLOCK_WIDTH * BLOCK_HEIGHT:
            game_status = GameStatus.win

        if game_status == GameStatus.over:
            screen.blit(img_face_fail, (face_pos_x, face_pos_y))
        elif game_status == GameStatus.win:
            screen.blit(img_face_success, (face_pos_x, face_pos_y))
        else:
            screen.blit(img_face_normal, (face_pos_x, face_pos_y))

        pygame.display.update()


if __name__ == '__main__':
    main()

最後說一句，CSDN 的貼程式碼看起來比部落格園爽多了，黑色背景跟 IDE 的一樣，