Python小项目之五子棋

1.项目简介

在刚刚学习完python套接字的时候做的一个五子棋小游戏，可以在局域网内双人对战，也可以和电脑对战

2.实现思路

局域网对战

对于局域网功能来说，首先建立连接（tcp），然后每次下棋时将棋子的坐标发送给对方，当接收到坐标后实例化成棋子对象，这个接收时用了select函数，因为pygame需要循环渲染图片，所以要用非阻塞方式接收消息

select()的机制中提供一fd_set的数据结构，实际上是一long类型的数组，每一个数组元素都能与一打开的文件句柄（不管是Socket句柄，还是其他文件或命名管道或设备句柄）建立联系，建立联系的工作由程序员完成，当调用select()时，由内核根据IO状态修改fd_set的内容，由此来通知执行了select()的进程哪一Socket或文件可读或可写，主要用于Socket通信当中

主要代码如下：

         # 接收cli的消息

         if is_people:

             rs, ws, es = select.select(inputs, [], [], 0)

             for r in rs:

                 if r is tcpclisock:

                     try:

                         data = r.recv(BUFSIZ)

                         islink = True

                         print(data.decode('utf8'))

                         if data.decode('utf8') == 'again':

                             is_recieve1 = True

                         if data.decode('utf8') == 'yes':

                             is_playagain = True

                             is_play = True

                         if data.decode('utf8') == 'no':

                             is_recieve2 = True

                             islink = False

                         if not is_play and not result:

                             me = storn.Storn_Black(eval(data))

                             black_chesses.append(me)

                             chesses.append(me)

                             is_play = True

                     except error:

                         islink = False

电脑对战

电脑对战的思路也很简单，用了应该是最常见的也是最简单的方法，就是循环遍历棋盘的每一个点，判断该点的价值，选取价值最大的点落子，这个需要对五子棋的棋型有一定了解，这里介绍几种常见的棋型（约定1为己方棋子，2为对方棋子，0为空）

活四（011110）：这时候四颗棋子相连，同时两端为空，已经阻止不了一方的胜利了，此时价值应该设置最高
死四（011112|10111|11011）：四颗棋子，只有一个地方能形成连五，如果是自己的棋可以赢，是对方的也可以阻止对方赢棋，此时价值次高

　　　。。。

就这样把每种棋型判断一下，获得该点的价值，主要代码如下：

 # 判断每个点的价值

 def point_value(pos, white_chesses, black_chesses, identify1, identify2):

     value = 0

     for i in range(1,9):

         # *1111_ 活四

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 5, white_chesses, black_chesses) == 0:

             value += 40000

         # *11112 死四1

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 5, white_chesses, black_chesses) == identify2:

             value += 30000

         # 1*111 死四2

         if get_point(pos, i, -1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1:

             value += 30000

         # 11*11 死四3

         if get_point(pos, i, -2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, -1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1:

             value += 30000

         # *111_ 活三1

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == 0:

             value += 20000

         # *1_11_ 活三2

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 5, white_chesses, black_chesses) == 0:

             value += 20000

         # *1112 死三1

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == identify2:

             value += 15000

         # _1_112 死三2

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 5, white_chesses, black_chesses) == identify2:

             value += 15000

         # _11_12 死三3

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 5, white_chesses, black_chesses) == identify2:

             value += 15000

         # 1__11 死三4

         if get_point(pos, i, -1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 1, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1:

             value += 15000

         # 1_1_1 死三5

         if get_point(pos, i, -1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1:

             value += 15000

         # 2_111_2 死三6

         if get_point(pos, i, -1, white_chesses, black_chesses) == identify2 and \

             get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 5, white_chesses, black_chesses) == identify2:

             value += 15000

         # __11__ 活二1

         if get_point(pos, i, -1, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == 0:

             value += 1000

         # _1_1_ 活二2

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 4, white_chesses, black_chesses) == 0:

             value += 1000

         # *1__

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == 0 and \

             get_point(pos, i, 3, white_chesses, black_chesses) == 0:

             value += 30

         # *1_

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1 and \

             get_point(pos, i, 2, white_chesses, black_chesses) == 0:

             value += 20

         # *1

         if get_point(pos, i, 1, white_chesses, black_chesses) == identify1:

             value += 10

     return value

电脑选择落子位置时，要判断是进攻还是防守，需要两次遍历棋盘，获取进攻时的最大价值和防守的最大价值，主要代码如下：

 # 电脑选取落子的位置

 def ai(white_chesses, black_chesses, chesses):

     value = max1 = max2 = 0

     pos1 = pos2 = ()

     # 进攻时

     for i in range(0,15):

         row = 28 + i * 40

         for j in range(0,15):

             col = 28 + j * 40

             pos = (row,col)

             if is_empty(pos, chesses):

                 continue

             value = point_value(pos, white_chesses, black_chesses, 1, 2)

             if value > max1:

                 max1 = value

                 pos1 = (row,col)

     # 防守时

     for i in range(0,15):

         for j in range(0,15):

             row = 28 + i * 40

             col = 28 + j * 40

             if is_empty((row,col), chesses):

                 continue

             value = point_value((row,col), white_chesses, black_chesses, 2, 1)

             if value > max2:

                 max2 = value

                 pos2 = (row,col)

     if max1 > max2:

         return pos1

     else:

         return pos2

3.游戏截图

源代码地址：https://github.com/tctctctctc/python- 欢迎star

有不足之处还请指正

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