1

我正在尝试用 pygame 中的 rects 制作游戏表面。我不确定问题到底是什么，但我相信它与创建矩形时列表的实际迭代有关。对不起，这里的菜鸟。:)

import pygame

w = 800
h = 600
board_pos = 0, 0
tile = 27
playfield = 0

class Board(object):
    def __init__(self, surface, pos, tile_size):
        self.surface = surface
        self.x, self.y = pos
        self.tsize = tile_size
        self.color = 50, 50, 50

        playfield = [list(None for i in xrange(22)) for i in xrange(10)]  

    def draw(self):
        for i in xrange(10):
            for j in xrange(22):
                playfield[i][j] = pygame.draw.rect(self.surface, self.color,
                                                  (self.x + (i * self.tsize),
                                                   self.y + (j * self.tsize),
                                                   self.tsize, self.tsize))

pygame.display.init()
screen = pygame.display.set_mode((w, h))

board = Board(screen, board_pos, tile)
board.draw()

while __name__ == '__main__':
    pygame.display.flip()

我不断收到此错误：

Traceback (most recent call last):
  File "C:\Documents and Settings\Administrator\My
Documents\Dropbox\Programming\DeathTris
\test2.py", line 30, in <module>
    board.draw()
  File "C:\Documents and Settings\Administrator\My
Documents\Dropbox\Programming\DeathTris
\test2.py", line 24, in draw
    self.tsize, self.tsize))
TypeError: 'int' object has no attribute '__getitem__'

任何帮助，将不胜感激。谢谢！

4

1 回答 1

10

您的行在函数playfield = [list(None for i in xrange(22)) for i in xrange(10)]内部创建了一个局部变量__init__。该变量在__init__函数返回后消失。稍后，draw当您执行 时playfield[i][j]，您正在访问 的全局值playfield，该值仍然为 0（因为您在开始时将其初始化为 0）。

If you want to overwrite the global playfield from inside your __init__, you need to do global playfield before you assign to it. (But. . . why are you using a global variable for this anyway?)

于 2012-08-10T20:34:11.420 回答