康威的生命遊戲列表索引錯誤

Question

所以我試圖讓康威的生活在Python/pygame中的遊戲，以及使新的網格工作的第一個迭代，但第二個不會因爲列表索引超出範圍錯誤。我一直試圖弄清楚什麼是錯的，但是列表索引不應該超出範圍。這是我的代碼，錯誤是假想在changevalue()但我懷疑它是不是，因爲第一次迭代的工作原理：

import pygame 
import random 

width = 400 
height = 400 
blocksize = 10 

white = (255, 255, 255) 
black = (0, 0, 0) 

visual = pygame.display.set_mode((width, height)) 
clock = pygame.time.Clock() 

IsOn = True 

grid = [] 
templist = [] 
tempgrid = [] 
class square(object): 
    def __init__(self, x, y, alive): 
     self.x = x 
     self.y = y 
     self.alive = alive 

for y in range(height/blocksize): 
    templist = [] 
    for x in range(width/blocksize): 
     templist.append(square(x, y, random.choice([True, False, False, False]))) 
    grid.append(templist) 

def changevalue(cx, cy, cgrid): 
    neighbours = [] 
    for dy in range(3): 
     ddy = dy - 1 
     for dx in range(3): 
      ddx = dx - 1 
      if not (dx - 1 == 0 and dy - 1 == 0): 
       #print cgrid[(cy + ddy)%len(cgrid)][(cx + ddx)%len(cgrid[y])].alive 
        #NO ERRORS 
       #print len(cgrid) > (cy + ddy)%len(cgrid), len(cgrid[y]) > (cx + ddx)%len(cgrid[cy]) 
        #NO ERRORS 
       neighbours.append(cgrid[(cy + ddy)%len(cgrid)][(cx + ddx)%len(cgrid[cy])].alive) 
    return len(filter(lambda p: p == True, neighbours)) 

while IsOn: 
    for event in pygame.event.get(): 
     if event.type == pygame.QUIT: 
      IsOn = False 
     if event.type == pygame.KEYDOWN: 
      if event.key == pygame.K_c: 
       proceed = True 

    tempgrid = [] 
    for times in range(len(grid)): 
     tempgrid.append([]) 
    for ty in range(len(grid)): 
     for tx in range(len(grid[ty])): 
      if changevalue(tx, ty, grid) < 2 and grid[ty][tx].alive == True: 
       tempgrid[ty].append(square(tx, ty, False)) 
      elif changevalue(tx, ty, grid) > 3 and grid[ty][tx].alive == True: 
       tempgrid[ty].append(square(tx, ty, False)) 
      elif changevalue(tx, ty, grid) == 3 and grid[ty][tx].alive == False: 
       tempgrid[ty].append(square(tx, ty, True)) 

    grid = list(tempgrid) 

    visual.fill(white) 
    for y in range(len(grid)): 
     for x in range(len(grid[y])): 
      if grid[y][x].alive == True: 
       pygame.draw.rect(visual, black, (grid[y][x].x*blocksize, grid[y][x].y*blocksize, blocksize, blocksize)) 
    pygame.display.update() 
    clock.tick(2) 

pygame.quit() 
quit() 

感謝您的幫助！

Answer 1

不要複製方不會改變價值 - 所以新行有不同的長度 - 後來你有index

你需要像這樣

if changevalue ...: 
    ... 
elif changevalue ...: 
    ... 
elif changevalue ...: 
    ... 
else: 
    # copy other elements 
    tempgrid[ty].append(grid[ty][tx])