python国际象棋小游戏代码

Python国际象棋小游戏代码可以通过各种方式实现。这里提供一种简单的实现方式：

class ChessGame:
    def __init__(self):
        self.board = [
            ["R", "N", "B", "Q", "K", "B", "N", "R"],
            ["P", "P", "P", "P", "P", "P", "P", "P"],
            [" ", ".", " ", ".", " ", ".", " ", "."],
            [".", " ", ".", " ", ".", " ", ".", " "],
            [" ", ".", " ", ".", " ", ".", " ", "."],
            [".", " ", ".", " ", ".", " ", ".", " "],
            ["p", "p", "p", "p", "p", "p", "p", "p"],
            ["r", "n", "b", "q", "k", "b", "n", "r"]
        ]
        self.current_player = 0
        self.game_over = False

    def play(self, start, end):
        x1, y1 = start
        x2, y2 = end
        piece = self.board[x1][y1]
        if piece == ' ' or piece == '.':
            return False
        if (piece.islower() and self.current_player == 0) or (piece.isupper() and self.current_player == 1):
            return False
        if piece.lower() == 'p' and x2 == x1 + 2 and y1 == y2:
            if self.board[x1 + 1][y1] != ' ':
                return False
        if piece.lower() == 'p' and x2 == x1 + 1 and abs(y2 - y1) == 1:
            if self.board[x2][y2] == ' ':
                return False
        if piece.lower() == 'p' and x2 == x1 + 1 and y2 == y1:
            if self.board[x2][y2] != ' ':
                return False
        if piece.lower() == 'r' and x1 != x2 and y1 != y2:
            return False
        if piece.lower() == 'n' and not ((abs(x2 - x1) == 2 and abs(y2 - y1) == 1) or (abs(x2 - x1) == 1 and abs(y2 - y1) == 2)):
            return False
        if piece.lower() == 'b' and abs(x2 - x1) != abs(y2 - y1):
            return False
        if piece.lower() == 'q' and not ((x1 == x2 or y1 == y2) or (abs(x2 - x1) == abs(y2 - y1))):
            return False
        if piece.lower() == 'k' and not ((abs(x2 - x1) <= 1) and (abs(y2 - y1) <= 1)):
            return False

        self.board[x2][y2] = self.board[x1][y1]
        self.board[x1][y1] = ' '
        self.current_player = 1 - self.current_player
        return True

    def print_board(self):
        print("   A B C D E F G H ")
        print("  +--+")
        for i in range(8):
            print(str(8-i) + " | ", end="")
            for j in range(8):
                print(self.board[i][j] + " ", end="")
            print("| " + str(8-i))
        print("  +---------------+")
        print("   A B C D E F G H ")

    def check_game_over(self):
        kings = []
        for i in range(8):
            for j in range(8):
                if self.board[i][j].lower() == 'k':
                    kings.append((i, j))

        for king in kings:
            x, y = king
            for i in range(max(0, x-1), min(8, x+2)):
                for j in range(max(0, y-1), min(8, y+2)):
                    if i != x or j != y:
                        if self.board[i][j] == ' ' or self.board[i][j].isupper() == self.board[x][y].isupper():
                            continue
                        if self.check_move_valid((x, y), (i, j)):
                            return False

        self.game_over = True
        return True

    def check_move_valid(self, start, end):
        copy_board = [row[:] for row in self.board]
        copy_game = ChessGame()
        copy_game.board = copy_board
        copy_game.current_player = self.current_player
        return copy_game.play(start, end)

game = ChessGame()

while not game.game_over:
    game.print_board()
    player = game.current_player + 1
    start = input("Player {} move: ".format(player))
    end = input("to: ")
    x1, y1 = ord(start) - ord('A'), 8 - int(start[1])
    x2, y2 = ord(end) - ord('A'), 8 - int(end)
    valid_move = game.check_move_valid((x1, y1), (x2, y2))
    while not valid_move:
        print("Invalid move!")
        start = input("Player {} move: ".format(player))
        end = input("to: ")
        x1, y1 = ord(start) - ord('A'), 8 - int(start)
        x2, y2 = ord(end) - ord('A'), 8 - int(end)
        valid_move = game.check_move_valid((x1, y1), (x2, y2))
    game.play((x1, y1), (x2, y2))
    game.check_game_over()

print("Game over!")