Python國際象棋程序

Question

我正在嘗試為我的編碼項目制作一個相當簡單的國際象棋游戲，希望在某個時候也能實現一個計算機對手，有點卡在如何添加移動限制和功能以檢測此時游戲的結束。 身體是由@sloth 設計的，我已經添加了。

我已經完成了相當簡單的工作，加載了所有部件並更改了電路板顏色，但我不太確定此時該做什么。 任何幫助，將不勝感激！

import pygame

TILESIZE = 75
BOARD_POS = (10, 10)

def create_board_surf():
    board_surf = pygame.Surface((TILESIZE*8, TILESIZE*8))
    dark = False
    for y in range(8):
        for x in range(8):
            rect = pygame.Rect(x*TILESIZE, y*TILESIZE, TILESIZE, TILESIZE)
            pygame.draw.rect(board_surf, pygame.Color('darkgreen' if dark else 'beige'), rect)
            dark = not dark
        dark = not dark
    return board_surf

def get_square_under_mouse(board):
    mouse_pos = pygame.Vector2(pygame.mouse.get_pos()) - BOARD_POS
    x, y = [int(v // TILESIZE) for v in mouse_pos]
    try:
        if x >= 0 and y >= 0: return (board[y][x], x, y)
    except IndexError: pass
    return None, None, None

def create_board():
    board = []
    for y in range(8):
        board.append([])
        for x in range(8):
            board[y].append(None)

    ## BLACK PIECES ##

    for x in range(0, 8):
        board[1][x] = ('black', 'pawn')
    for x in range(0, 1):
        board[0][x] = ('black', 'rook')
    for x in range(0, 8):
        board[0][x] = ('black', 'rook')
    for x in range(1, 2):
        board[0][x] = ('black', 'horse')
    for x in range(6, 7):
        board[0][x] = ('black', 'horse')
    for x in range(2, 3):
        board[0][x] = ('black', 'bishop')
    for x in range(5, 6):
        board[0][x] = ('black', 'bishop')
    for x in range(3, 4):
        board[0][x] = ('black', 'queen')
    for x in range(4, 5):
        board[0][x] = ('black', 'king')

    ## WHITE PIECES ##

    for x in range(0, 8):
        board[6][x] = ('white', 'pawn')
    for x in range(0, 1):
        board[7][x] = ('white', 'rook')
    for x in range(7, 8):
        board[7][x] = ('white', 'rook')
    for x in range(1, 2):
        board[7][x] = ('white', 'horse')
    for x in range(6, 7):
        board[7][x] = ('white', 'horse')
    for x in range(2, 3):
        board[7][x] = ('white', 'bishop')
    for x in range(5, 6):
        board[7][x] = ('white', 'bishop')
    for x in range(3, 4):
        board[7][x] = ('white', 'queen')
    for x in range(4, 5):
        board[7][x] = ('white', 'king')



    return board

def draw_pieces(screen, board, font, selected_piece):
    sx, sy = None, None
    if selected_piece:
        piece, sx, sy = selected_piece

    for y in range(8):
        for x in range(8):
            piece = board[y][x]
            if piece:
                selected = x == sx and y == sy
                color, type = piece
                s1 = font.render(type[0], True, pygame.Color('red' if selected else color))
                s2 = font.render(type[0], True, pygame.Color('darkgrey'))
                pos = pygame.Rect(BOARD_POS[0] + x * TILESIZE+1, BOARD_POS[1] + y * TILESIZE + 1, TILESIZE, TILESIZE)
                screen.blit(s2, s2.get_rect(center=pos.center).move(1, 1))
                screen.blit(s1, s1.get_rect(center=pos.center))

def draw_selector(screen, piece, x, y):
    if piece != None:
        rect = (BOARD_POS[0] + x * TILESIZE, BOARD_POS[1] + y * TILESIZE, TILESIZE, TILESIZE)
        pygame.draw.rect(screen, (255, 0, 0, 50), rect, 2)

def draw_drag(screen, board, selected_piece, font):
    if selected_piece:
        piece, x, y = get_square_under_mouse(board)
        if x != None:
            rect = (BOARD_POS[0] + x * TILESIZE, BOARD_POS[1] + y * TILESIZE, TILESIZE, TILESIZE)
            pygame.draw.rect(screen, (0, 255, 0, 50), rect, 2)

        color, type = selected_piece[0]
        s1 = font.render(type[0], True, pygame.Color(color))
        s2 = font.render(type[0], True, pygame.Color('darkgrey'))
        pos = pygame.Vector2(pygame.mouse.get_pos())
        screen.blit(s2, s2.get_rect(center=pos + (1, 1)))
        screen.blit(s1, s1.get_rect(center=pos))
        selected_rect = pygame.Rect(BOARD_POS[0] + selected_piece[1] * TILESIZE, BOARD_POS[1] + selected_piece[2] * TILESIZE, TILESIZE, TILESIZE)
        pygame.draw.line(screen, pygame.Color('red'), selected_rect.center, pos)
        return (x, y)

def main():
    pygame.init()
    font = pygame.font.SysFont('', 64)
    screen = pygame.display.set_mode((620, 620))
    board = create_board()
    board_surf = create_board_surf()
    clock = pygame.time.Clock()
    selected_piece = None
    drop_pos = None
    while True:
        piece, x, y = get_square_under_mouse(board)
        events = pygame.event.get()
        for e in events:
            if e.type == pygame.QUIT:
                return
            if e.type == pygame.MOUSEBUTTONDOWN:
                if piece != None:
                    selected_piece = piece, x, y
            if e.type == pygame.MOUSEBUTTONUP:
                if drop_pos:
                    piece, old_x, old_y = selected_piece
                    board[old_y][old_x] = 0
                    new_x, new_y = drop_pos
                    board[new_y][new_x] = piece
                selected_piece = None
                drop_pos = None

        screen.fill(pygame.Color('grey'))
        screen.blit(board_surf, BOARD_POS)
        draw_pieces(screen, board, font, selected_piece)
        draw_selector(screen, piece, x, y)
        drop_pos = draw_drag(screen, board, selected_piece, font)

        pygame.display.flip()
        clock.tick(60)

if __name__ == '__main__':
    main()

Answer 1

首先，如果您只想完成任務，最好使用 python-chess 庫。 否則，要檢查國際象棋游戲的結束，您需要查看是否有幾個可能的條件為真：

• 是將死嗎（即國王處於受控狀態，不能移動到任何相鄰的方格或以其他方式不受控）
• 是否陷入僵局（即沒有合法舉動）
• 是否重復三次（即position在游戲中重復三次）
• 50 步規則（即如果在 50 步中沒有進行捕獲或典當移動）
• 是不是因為材料不足而無法交配

因此，僅僅因為游戲規則，它就相當復雜。

現在，如果您想選擇合法的移動，請閱讀有關 0x88 代表棋盤的方法。 它將 position 表示為兩塊板，一個包含碎片，另一個包含非法區域。 這提供了對合法動作的簡單檢查，因為您只需將棋盤與生成的動作結合來檢查合法性。 在實施滑動件、國王和通行證時要小心。