Pygame按空格触发攻击动画报IndexError列表索引越界问题

• 索引越界的核心原因：你全局定义的walkLeft、walkRight列表只有3个元素（有效索引为0、1、2），但你在循环的绘制逻辑中设置了walkCount + 1 >= 12才重置walkCount，当walkCount增长到9及以上时，walkCount//3的结果会是3、4，超出了列表的有效索引范围，直接触发IndexError。
• 第二套重绘逻辑完全不生效的原因：
  1. redrawGameWindow2内部定义的walkLeft、walkRight是局部变量，不会修改全局的动画列表，全局列表始终只有3个元素
  2. 你把redrawGameWindow2的定义写在了主循环内部，每次循环都会重复定义函数，且你是在执行完绘制逻辑之后才调用redrawGameWindow2，哪怕修改了列表也不会对本次的绘制生效
  3. 代码语法存在错误，walkRight赋值语句中间错误换行，会直接触发语法报错

你不需要定义两套重绘函数，只需要新增攻击状态标记，统一在一个重绘逻辑里处理不同状态的动画即可，修复后的可运行代码如下：

import pygame
pygame.init()

win = pygame.display.set_mode((1280,800))
pygame.display.set_caption("First Game")

# 提前加载所有动画资源，不要在循环里重复加载
walkLeft = [pygame.image.load('/Users/arnav/Downloads/Jokerattack1.png'), 
            pygame.image.load('/Users/arnav/Downloads/Jokerattack2.png'), 
            pygame.image.load('/Users/arnav/Downloads/Jokerattack3.png')]
walkRight = [pygame.image.load('/Users/arnav/Downloads/Jokerattack1Right.png'), 
             pygame.image.load('/Users/arnav/Downloads/Jokerattack2Right.png'), 
             pygame.image.load('/Users/arnav/Downloads/Jokerattack3Right.png')]
# 提前加载攻击动画
attackLeft = [pygame.image.load('/Users/arnav/Downloads/Jokerattack1.png'), 
              pygame.image.load('/Users/arnav/Downloads/Jokerattack2.png'), 
              pygame.image.load('/Users/arnav/Downloads/Jokerattack3.png'), 
              pygame.image.load('/Users/arnav/Downloads/Jokerattack4.png')]
attackRight = [pygame.image.load('/Users/arnav/Downloads/Jokerattack1Right.png'), 
               pygame.image.load('/Users/arnav/Downloads/Jokerattack2Right.png'), 
               pygame.image.load('/Users/arnav/Downloads/Jokerattack3Right.png'), 
               pygame.image.load('/Users/arnav/Downloads/Jokerattack3Right.png')]

Joker1 = pygame.image.load('/Users/arnav/Downloads/Joker.png')
char = pygame.transform.scale(Joker1, (80, 132)) 
bg1 = pygame.image.load('/Users/arnav/Downloads/GothamCity.jpg')
bg = pygame.transform.scale(bg1, (1280, 800))
x = 0
y = 400
width = 40
height = 60
vel = 5

clock = pygame.time.Clock()

isJump = False
jumpCount = 10
isAttack = False # 新增攻击状态标记
attackCount = 0 # 攻击动画计数器

left = False
right = False
walkCount = 0

def redrawGameWindow():
    global walkCount, attackCount, isAttack
    win.blit(bg, (0,0))
    
    if isAttack:
        # 处理攻击动画
        if attackCount +1 >= 12: # 4帧动画，每帧显示3个tick，总共12个tick完成一轮
            attackCount = 0
            isAttack = False # 攻击动画播放完结束攻击状态
        if left:
            win.blit(attackLeft[attackCount//3], (x,y))
        else:
            win.blit(attackRight[attackCount//3], (x,y))
        attackCount +=1
    else:
        # 处理普通行走/站立动画
        if walkCount + 1 >= 9: # 3帧动画，每帧3tick，总共9tick一轮
            walkCount = 0
        if left:  
            win.blit(walkLeft[walkCount//3], (x,y))
            walkCount += 1                          
        elif right:
            win.blit(walkRight[walkCount//3], (x,y))
            walkCount += 1
        else:
            win.blit(char, (x, y))
            walkCount = 0
    pygame.display.update() 

run = True
while run:
    clock.tick(12)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    keys = pygame.key.get_pressed()
    # 攻击状态下不响应移动和跳跃
    if not isAttack:
        if keys[pygame.K_SPACE]:
            isAttack = True
            attackCount = 0
        else:
            if (keys[pygame.K_LEFT] or keys[ord('a')]) and x > vel: 
                x -= vel
                left = True
                right = False
            elif (keys[pygame.K_RIGHT] or keys[ord('d')]) and x < 1280 - vel - width:  
                x += vel
                left = False
                right = True
            else: 
                left = False
                right = False
                walkCount = 0

            if not(isJump):
                if keys[pygame.K_UP] or keys[ord('w')]:
                    isJump = True
                    left = False
                    right = False
                    walkCount = 0
            else:
                if jumpCount >= -10:
                    y -= (jumpCount * abs(jumpCount)) * 0.5
                    jumpCount -= 1
                else: 
                    jumpCount = 10
                    isJump = False
    # 统一调用重绘函数
    redrawGameWindow()

pygame.quit()

• 提前加载所有动画资源，避免在循环中重复加载拖慢性能
• 新增isAttack状态标记和attackCount计数器，区分普通行走和攻击状态，避免动画逻辑冲突
• 不同状态的动画分别设置对应的walkCount重置阈值，保证索引不会超出列表范围
• 修复了按键判断的优先级，攻击时不响应移动操作，避免动画混乱
• 移除了冗余的重绘函数和循环内的绘制逻辑，代码结构更清晰

内容的提问来源于stack exchange，提问作者user17569387