python开发五子棋3 #

1. 规则类的设定1
2. 规则类的设定2

收获 #

了解python类函数的定义方法和原理，通过PyGame实践学会独立建立和更新项目，完成五子棋游戏开发

规则类的设定1 #

本小节为设定五子棋规则类设定之一，判断某一位置是否已经落子，禁止对已落子的位置重复落子

##############################新建一个.py文件，并命名为checkboard.py###############
from collections import namedtuple

Chessman = namedtuple('Chessman', 'Name Value Color')
Point = namedtuple('Point', 'X Y')

BLACK_CHESSMAN = Chessman('黑子', 1, (45, 45, 45))
WHITE_CHESSMAN = Chessman('白子', 2, (219, 219, 219))

offset = [(1, 0), (0, 1), (1, 1), (1, -1)]

class Checkerboard:
    def __init__(self, line_points):
        self._line_points = line_points
        self._checkerboard = [[0] * line_points for _ in range(line_points)]

    def _get_checkerboard(self):
        return self._checkerboard

    checkerboard = property(_get_checkerboard)

    # 判断是否可落子
    def can_drop(self, point):
        return self._checkerboard[point.Y][point.X] == 0

    def drop(self, chessman, point):
        """
        落子
        :param chessman:
        :param point:落子位置
        :return:若该子落下之后即可获胜，则返回获胜方，否则返回 None
        """
        print(f'{chessman.Name} ({point.X}, {point.Y})')
        self._checkerboard[point.Y][point.X] = chessman.Value

        if self._win(point):
            print(f'{chessman.Name}获胜')
            return chessman

规则类的设定2 #

本小节为设定五子棋规则类设定之二，判断是否有获胜者

################################ Checkerboard类下，在drop函数后，添加下列新的功能函数##########################
# 判断是否获胜
def _win(self, point):
    cur_value = self._checkerboard[point.Y][point.X]
    for os in offset:
        if self._get_count_on_direction(point, cur_value, os[0], os[1]):
            return True

def _get_count_on_direction(self, point, value, x_offset, y_offset):
    count = 1
    for step in range(1, 5):
        x = point.X + step * x_offset
        y = point.Y + step * y_offset
        if 0 <= x < self._line_points and 0 <= y < self._line_points and self._checkerboard[y][x] == value:
            count += 1
        else:
            break
    for step in range(1, 5):
        x = point.X - step * x_offset
        y = point.Y - step * y_offset
        if 0 <= x < self._line_points and 0 <= y < self._line_points and self._checkerboard[y][x] == value:
            count += 1
        else:
            break

    return count >= 5

小结 #

本节介绍了五子棋人人交战中规则的设定方法，需要掌握五子棋的规则要点以及在游戏开发中类函数的调用方法

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