Question

我试图通过在python中使用pygame绘制线条来创建这个迷宫轮廓，但格式搞砸了，我不确定发生了什么。我认为这可能是我创建的用于根据for循环中哪些字符处于活动状态来绘制线条的逻辑问题。

import pygame
pygame.init()
global black, white
white = (255,255,255)
black = (0,0,0)
display_width = 1200
display_height = 800


gameDisplay = pygame.display.set_mode((display_width,display_height))
clock = pygame.time.Clock()


def draw_line(surface,color,start_pos,end_pos,width):
    pygame.draw.line(surface,color,start_pos,end_pos,width)

def game_loop():
    maze = "+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+n\
            |        |     |        |           |     |     |n\
            +  +--+  +  +  +--+  +  +  +  +--+--+  +  +--+  +n\
            |  |     |  |        |  |  |           |  |     |n\
            +  +--+  +  +  +--+--+  +  +--+--+--+--+  +  +  +n\
            |     |     |  |     |  |  |        |     |  |  |n\
            +--+  +--+--+--+  +  +--+  +  +--+--+--+--+  +  +n\
            |     |           |        |                 |  |n\
            +  +  +  +--+--+--+--+--+--+--+--+--+--+--+  +--+n\
            |  |  |  |        |                       |     |n\
            +  +--+  +  +--+  +  +--+--+--+--+--+--+  +  +  +n\
            |        |  |        |        |        |  |  |  |n\
            +  +--+--+  +--+--+--+  +--+  +  +  +--+  +  +  +n\
            |        |           |  |     |  |        |  |  |n\
            +--+--+  +--+--+--+  +  +  +--+  +--+--+--+--+  +n\
            |                    |  |                       |n\
            +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+"

    gameExit = False

    WALL_LENGTH = 20
    x=y=x2=y2=START=5


    gameDisplay.fill(white)

    for i in maze:
        if i == "+" or i == "-":
            x2+=WALL_LENGTH
            draw_line(gameDisplay,black,(x,y),(x2,y2),5)
            x+=WALL_LENGTH
        elif i == "n":
            y+=WALL_LENGTH*2
            y2=y
            x=START
            x2=START
        elif i == "|":
            y2+=WALL_LENGTH*2
            draw_line(gameDisplay,black,(x,y),(x2,y2),5)
            x+=WALL_LENGTH
            x2=x
            y2=y
        elif i == " ":
            x+=WALL_LENGTH
            x2=x





    while not gameExit:

        for event in pygame.event.get():
            if event.type == pygame.QUIT: gameExit = True


        pygame.display.update()
        clock.tick(30)


game_loop()
pygame.quit()
quit()

Answer 1

最简单的调试方法是在代码中放几个print语句，然后查看x，y，x2，y2变量。

我注意到以下问题：

一行末尾的反斜杠告诉python字符串在下一行的开头继续。这意味着你在那里缩进迷宫的所有空格都被计算在内。当代码看到第一个＆＃34; |＆＃34;或＆＃34; +＆＃34;，x计数器已经在245，将整行向右移动。删除每个迷宫线开头的空白以解决此问题。

每次有新行时，都会计算y值。但是，垂直线只连接两条水平线，它们本身并不是真正的迷宫线。所以你需要做两件事之一：

一个。在每个偶数行的末尾往下走，向下拉墙

湾在每个奇数行的末尾往下走，向上画墙（我在下面做过）

最后，我不太清楚你的＆＃34; +＆＃34;应该是。您目前使用它们来表示垂直线，水平线，角，线端以及交叉点。您需要为这些情况找出不同的ASCII符号，并替换您的＆＃34; +＆＃34;通过适当的符号然后调整您的代码以绘制所需的任何内容。否则，当您应该绘制垂直线时，最终会绘制水平线，反之亦然。

这是一个有点固定的代码版本。它仍然没有正确处理＆＃34; +＆＃34;，但是我已经把它绘制成红色的有问题的行，所以应该很容易找出正确的行为。

import pygame pygame.init() global black, white white = (255,255,255) black = (0,0,0) red = (255,0,0) display_width = 1200 display_height = 800 gameDisplay = pygame.display.set_mode((display_width,display_height)) clock = pygame.time.Clock() def draw_line(surface,color,start_pos,end_pos,width): pygame.draw.line(surface,color,start_pos,end_pos,width) def game_loop(): maze = "\ +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+n\ | | | | | | |n\ + +--+ + + +--+ + + + +--+--+ + +--+ +n\ | | | | | | | | | |n\ + +--+ + + +--+--+ + +--+--+--+--+ + + +n\ | | | | | | | | | | |n\ +--+ +--+--+--+ + +--+ + +--+--+--+--+ + +n\ | | | | | |n\ + + + +--+--+--+--+--+--+--+--+--+--+--+ +--+n\ | | | | | | |n\ + +--+ + +--+ + +--+--+--+--+--+--+ + + +n\ | | | | | | | | |n\ + +--+--+ +--+--+--+ +--+ + + +--+ + + +n\ | | | | | | | | |n\ +--+--+ +--+--+--+ + + +--+ +--+--+--+--+ +n\ | | | |n\ +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+" gameExit = False WALL_LENGTH = 20 x=y=x2=y2=START=5 gameDisplay.fill(white) linecount = 0 for i in maze: if i == "-": x2+=WALL_LENGTH draw_line(gameDisplay,black,(x,y),(x2,y2),5) x+=WALL_LENGTH elif i == "+": x2+=WALL_LENGTH draw_line(gameDisplay,red,(x,y),(x2,y2),5) x+=WALL_LENGTH elif i == "n": linecount+=1 if(linecount % 2 == 0): y+=WALL_LENGTH*2 y2=y x=START x2=START elif i == "|": y2-=WALL_LENGTH*2 draw_line(gameDisplay,black,(x,y),(x2,y2),5) x+=WALL_LENGTH x2=x y2=y elif i == " ": x+=WALL_LENGTH x2=x while not gameExit: for event in pygame.event.get(): if event.type == pygame.QUIT: gameExit = True pygame.display.update() clock.tick(30) game_loop() pygame.quit() quit()

当前迷宫输出的屏幕截图：

Python 3 Pygame绘图迷宫

1 个答案: