Question

我在生成地图时遇到问题。它使用了几个包含向量列表的列表。还有壁组列表（该组表示由矢量指向的迷宫）。所以我有随机的问题。当我从迷宫列表中选择随机项目时。程序变得疯狂，并创造了一些没有多大意义的东西。我试图手动挑选每个迷宫，它完美地工作。我试图找到这个问题的解决方案，但没有这个问题的答案。从这个循环中的迷宫列表中取出随机项目有一定的错误编辑：这是可以运行以查看结果的程序。

import pygame, random, sys

WIDTH= 640
HEIGHT = 480
WHITE = (255, 255, 255)
BLUE = (50, 50, 255)
clock = pygame.time.Clock()
screen= pygame.display.set_mode((WIDTH, HEIGHT))
screen.fill(WHITE)

wall_list = pygame.sprite.Group()
all_sprite_list = pygame.sprite.Group()





class Wall(pygame.sprite.Sprite):
    def __init__(self, x, y, width, height):
        super().__init__()

        self.image = pygame.Surface([width, height])
        self.image.fill(BLUE)
        self.rect = self.image.get_rect()
        self.rect.y = y
        self.rect.x = x





def ran_map():
    walls_1 = [ [0, 0, 40, 20],
                 [60, 0, 30, 20],
                 [0, 40, 40, 10],
                 [60, 40, 30, 10]
                 ]
    walls_2 = [ [0, 0, 60, 10],
                 [40, 10, 20, 10],
                 [0, 30, 20, 20],
                 [20, 40, 70, 10],
                 [80, 0, 10, 40]
                 ]
    walls_3 = [ [0, 0, 10, 50],
                 [10, 0, 80, 10],
                 [80, 10, 10, 40],
                 [30, 30, 30, 20]
                 ]
s_maze = [walls_1, walls_2, walls_3]

vectors = [[60, 60], [170, 60], [380, 60], [490, 60], [60, 370], [170, 370], [380, 370], [490, 370]]

for item in vectors:
    v1 = item[0]
    v2 = item[1]
    random_item = random.choice(s_maze)
    for item in random_item:
        w1 = item[0]
        w2 = item[1]
        s1 = w1+ v1
        s2 = w2+ v2
        wall = Wall(s1, s2, item[2], item[3])
        wall_list.add(wall)
        all_sprite_list.add(wall)



def xz():
    done = False
    while not done:
        pygame.init()
        clock.tick(45)
        ran_map()
        all_sprite_list.draw(screen)
        pygame.display.flip()
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                done = True
    pygame.quit()

def main():
    xz()

main()

Answer 1

＆＃34;疯狂＆＃34;很可能是由于这个重复的迭代变量：

for *item* in vectors:
    ...
    for *item* in random_item:

我建议您简化代码的中间部分，如下所示：

...

mazes = {  # a dictionary of mazes
    'walls_1': [ [0, 0, 40, 20],
                 [60, 0, 30, 20],
                 [0, 40, 40, 10],
                 [60, 40, 30, 10]
               ],
    'walls_2': [ [0, 0, 60, 10],
                 [40, 10, 20, 10],
                 [0, 30, 20, 20],
                 [20, 40, 70, 10],
                 [80, 0, 10, 40]
               ],
    'walls_3': [ [0, 0, 10, 50],
                 [10, 0, 80, 10],
                 [80, 10, 10, 40],
                 [30, 30, 30, 20]
               ]
}

vectors = [[60, 60], [170, 60], [380, 60], [490, 60], [60, 370], [170, 370], [380, 370], [490, 370]]

for v1, v2 in vectors:
    random_item = random.choice(list(mazes.values()))

    for w1, w2, w3, w4 in random_item:
        s1 = w1 + v1
        s2 = w2 + v2
        wall = Wall(s1, s2, w3, w4)
        wall_list.add(wall)
        all_sprite_list.add(wall)

...

Python如何从包含列表

1 个答案: