python - 如何为国际象棋pygame程序中的棋子制定规则？

Question

我一直在尝试使用 pygame 创建一个国际象棋程序，并且一直在尝试编写棋子应该遵循的规则。我开始只关注国王的作品。这是我的代码：

class Piece(object):
    def __init__(self, x_init, y_init, color):
        self.x_init = x_init
        self.y_init = y_init
        self.color = color
        self.possible_positions = False
        self.width = 60
        self.height = 60
        self.click = False
        self.click_rect = sprites[0].get_rect(topleft=(self.x_init, self.y_init))
        self.init1 = True
        self.x_newinit = 0
        self.y_newinit = 0
        self.final_pos = False

    def movement(self):
        global x, y
        for event in ev:

            if self.init1:
                self.x_newinit = self.x_init
                self.y_newinit = self.y_init

            if event.type == pygame.MOUSEBUTTONDOWN:
                if self.click_rect.collidepoint(event.pos):
                    self.click = True
                    self.init1 = True
                    x, y = event.pos

            elif event.type == pygame.MOUSEBUTTONUP:
                self.click = False
                self.x_init = (((round(self.x_init / 75)) * 75) + 7.5)
                self.y_init = (((round(self.y_init / 75)) * 75) + 7.5)
                if not self.possible_positions:
                    self.x_init = self.x_newinit
                    self.y_init = self.y_newinit

            if event.type == pygame.MOUSEMOTION:
                self.init1 = False
                if self.click:
                    if 25 < x < 580:
                        self.x_init = x - 30
                    if 20 < y < 580:
                        self.y_init = y - 30
                    self.click_rect = sprites[0].get_rect(topleft=(self.x_init, self.y_init))



class King(Piece):
    def __init__(self, x_init, y_init, color):
        super().__init__(x_init, y_init, color)
        self.x_init = x_init
        self.y_init = y_init
        self.color = color
        self.final_pos = False

    def draw(self, gameWindow):
        if not self.final_pos:
            gameWindow.blit(sprites[0], (self.x_init, self.y_init))  # draw white king

    def draw2(self, gameWindow):
        if not self.final_pos:
            gameWindow.blit(sprites[6], (self.x_init, self.y_init))  # draw black king

    def poss_positions(self):
        if self.x_newinit - 37.5 >= self.x_init >= self.x_newinit - 112.5:  # move left
            self.possible_positions = True
        elif self.x_newinit + 37.5 <= self.x_init <= self.x_newinit + 112.5:  # move right
            self.possible_positions = True
        elif self.y_newinit - 37.5 >= self.y_init >= self.y_newinit - 112.5:  # move up
            self.possible_positions = True
        elif self.y_init - 37.5 >= self.y_newinit >= self.y_init - 112.5:  # move down
            self.possible_positions = True
        else:
            self.possible_positions = False

国王棋子遵循self.poss_positions规则，当我试图不正确地移动它们时，它们会被送回它们的起始位置，但随后它们被卡在那里，我无法再次移动它们。我尝试定义新变量并将它们设置为等于self.x_init并self.y_init在某些条件下，以便我可以将变量重置为 0self.x_newinit并self.y_newinit重置整个过程，但这不起作用。我提出的任何可能的解决方案似乎都不起作用。我需要帮助。

标签： pythonpygamechess