用python的pygame第三方库写一个井子棋游戏

好的，下面是井子棋游戏的代码：

import pygame

# 初始化pygame
pygame.init()

# 设置窗口大小
WINDOW_SIZE = (500, 500)

# 设置颜色
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)

# 设置字体和字号
FONT = pygame.font.SysFont('Arial', 50)

# 设置棋盘的大小和位置
BOARD_SIZE = (300, 300)
BOARD_POS = ((WINDOW_SIZE[0] - BOARD_SIZE[0]) // 2, (WINDOW_SIZE[1] - BOARD_SIZE[1]) // 2)

# 设置每个格子的大小
CELL_SIZE = 100

# 定义棋盘的类
class Board:
    def __init__(self):
        self.cells = [[None for _ in range(3)] for _ in range(3)]

    def reset(self):
        self.cells = [[None for _ in range(3)] for _ in range(3)]

    def draw(self, surface):
        for i in range(3):
            for j in range(3):
                # 绘制格子
                pygame.draw.rect(surface, BLACK, (BOARD_POS[0] + j * CELL_SIZE, BOARD_POS[1] + i * CELL_SIZE, CELL_SIZE, CELL_SIZE), 2)
                # 绘制棋子
                if self.cells[i][j] == 'X':
                    pygame.draw.line(surface, BLACK, (BOARD_POS[0] + j * CELL_SIZE + 10, BOARD_POS[1] + i * CELL_SIZE + 10), (BOARD_POS[0] + (j + 1) * CELL_SIZE - 10, BOARD_POS[1] + (i + 1) * CELL_SIZE - 10), 2)
                    pygame.draw.line(surface, BLACK, (BOARD_POS[0] + j * CELL_SIZE + 10, BOARD_POS[1] + (i + 1) * CELL_SIZE - 10), (BOARD_POS[0] + (j + 1) * CELL_SIZE - 10, BOARD_POS[1] + i * CELL_SIZE + 10), 2)
                elif self.cells[i][j] == 'O':
                    pygame.draw.circle(surface, BLACK, (BOARD_POS[0] + j * CELL_SIZE + CELL_SIZE // 2, BOARD_POS[1] + i * CELL_SIZE + CELL_SIZE // 2), CELL_SIZE // 2 - 10, 2)

    def get_cell(self, row, col):
        return self.cells[row][col]

    def set_cell(self, row, col, value):
        self.cells[row][col] = value

    def is_full(self):
        for i in range(3):
            for j in range(3):
                if self.cells[i][j] is None:
                    return False
        return True

    def check_win(self):
        # 检查行
        for i in range(3):
            if self.cells[i][0] == self.cells[i][1] == self.cells[i][2] and self.cells[i][0] is not None:
                return self.cells[i][0]

        # 检查列
        for j in range(3):
            if self.cells[0][j] == self.cells[1][j] == self.cells[2][j] and self.cells[0][j] is not None:
                return self.cells[0][j]

        # 检查对角线
        if self.cells[0][0] == self.cells[1][1] == self.cells[2][2] and self.cells[0][0] is not None:
            return self.cells[0][0]
        if self.cells[0][2] == self.cells[1][1] == self.cells[2][0] and self.cells[0][2] is not None:
            return self.cells[0][2]

        return None

# 创建窗口
screen = pygame.display.set_mode(WINDOW_SIZE)

# 设置窗口标题
pygame.display.set_caption("井子棋游戏")

# 初始化游戏
board = Board()
turn = 'X'

# 游戏循环
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.MOUSEBUTTONDOWN:
            # 获取鼠标点击的位置
            pos = pygame.mouse.get_pos()

            # 判断是否在棋盘内
            if BOARD_POS[0] <= pos[0] < BOARD_POS[0] + BOARD_SIZE[0] and BOARD_POS[1] <= pos[1] < BOARD_POS[1] + BOARD_SIZE[1]:
                # 获取所在的行和列
                row = (pos[1] - BOARD_POS[1]) // CELL_SIZE
                col = (pos[0] - BOARD_POS[0]) // CELL_SIZE

                # 判断该位置是否已经有棋子
                if board.get_cell(row, col) is None:
                    # 设置该位置的棋子
                    board.set_cell(row, col, turn)

                    # 切换玩家
                    turn = 'X' if turn == 'O' else 'O'

    # 绘制背景
    screen.fill(WHITE)

    # 绘制棋盘
    board.draw(screen)

    # 绘制玩家信息
    text = FONT.render("玩家 " + turn + " 走", True, BLACK)
    screen.blit(text, (10, 10))

    # 检查游戏是否结束
    winner = board.check_win()
    if winner is not None:
        text = FONT.render("玩家 " + winner + " 获胜", True, BLACK)
        screen.blit(text, ((WINDOW_SIZE[0] - text.get_width()) // 2, (WINDOW_SIZE[1] - text.get_height()) // 2))
    elif board.is_full():
        text = FONT.render("游戏结束，平局", True, BLACK)
        screen.blit(text, ((WINDOW_SIZE[0] - text.get_width()) // 2, (WINDOW_SIZE[1] - text.get_height()) // 2))

    # 更新屏幕
    pygame.display.flip()

# 退出pygame
pygame.quit()

运行代码后，就可以玩井子棋游戏了。玩家可以用鼠标点击棋盘上的格子来落子，游戏结束时会显示获胜者或平局。