python - 索引错误: list index out of range on a walking character

Question

我试图让角色移动，但是当我走一定距离时，会出现错误

我找不到可行的解决方案，所以我自己尝试了一些方法

global walkCount
win.blit(bg, (0, 0))
if walkCount + 1 >= 27:
    walkCount = 0
if left:
    win.blit(walkLeft[walkCount//3], (x, y))
    walkCount += 1
    pygame.display.update()
elif right:
      win.blit(walkRight[walkCount//3], (x,y))
      walkCount += 1
      pygame.display.update()

File "C:\Users\drfur\Desktop\Game\game.py", line 166, in <module>
   rwg()

File "C:\Users\drfur\Desktop\Game\game.py", line 55, in rwg
   win.blit(walkRight[walkcount//3], (x,y))

IndexError: list index out of range

它发生在左右两侧

Answer 1

walkCount 的最大值为 26。26//3 的结果为 8。您必须确保列表 walkLeft和 walkRight 有 9 个元素。

通过计算除以列表长度的提醒，可以避免列表索引超出范围的错误。余数可以通过取模运算符(%)来计算。请参阅Operators 。例如:

if left:

    i = (walkCount//3) % len(walkLeft)
    win.blit(walkLeft[i], (x, y))

elif right:

    i = (walkCount//3) % len(walkRight)
    win.blit(walkRight[i], (x,y))

walkCount += 1
pygame.display.update()