PyGame游戏子弹触左窗口闪烁问题排查求助

我开发了一款实现角色行走与射击功能的2D PyGame游戏，当前遇到的问题是：子弹触碰到窗口左边缘时画面会闪烁，触碰到右边缘则无此现象。曾猜测是子弹移出数组时屏幕未及时刷新导致，移除循环中的break语句后问题仍未解决，且闪烁现象存在随机性，怀疑可能是代码或其他因素导致，请求帮忙排查。

游戏初始化代码 #

import pygame

pygame.init()

win = pygame.display.set_mode((500, 480))
pygame.display.set_caption('Legend of Zorro')

walkRight = [pygame.image.load('Game/R1.png'), pygame.image.load('Game/R2.png'), pygame.image.load('Game/R3.png'),
             pygame.image.load(
                 'Game/R4.png'), pygame.image.load('Game/R5.png'), pygame.image.load('Game/R6.png'),
             pygame.image.load('Game/R7.png'), pygame.image.load(
        'Game/R8.png'), pygame.image.load('Game/R9.png')]
walkLeft = [pygame.image.load('Game/L1.png'), pygame.image.load('Game/L2.png'), pygame.image.load('Game/L3.png'),
            pygame.image.load(
                'Game/L4.png'), pygame.image.load('Game/L5.png'), pygame.image.load('Game/L6.png'),
            pygame.image.load('Game/L7.png'), pygame.image.load(
        'Game/L8.png'), pygame.image.load('Game/L9.png')]
bg = pygame.image.load('Game/bg.jpg')
char = pygame.image.load('Game/standing.png')

clock = pygame.time.Clock()
framerate = 45

Player类实现 #

class Player(object):
    def __init__(self, x, y, width, height):
        self.x = x
        self.y = y
        self.width = width
        self.height = height
        self.vel = 10
        self.isJump = False
        self.jumpCount = 10
        self.left = True
        self.right = False
        self.walkCount = 0
        self.standing = True

    def draw(self, win):
        if self.walkCount + 1 >= 27:
            self.walkCount = 0

        if not self.standing:

            if self.left:
                win.blit(walkLeft[self.walkCount // 3], (self.x, self.y))
                self.walkCount += 1
            elif self.right:
                win.blit(walkRight[self.walkCount // 3], (self.x, self.y))
                self.walkCount += 1
        else:
            if self.right:
                win.blit(walkRight[0], (self.x, self.y))
            else:
                win.blit(walkLeft[0], (self.x, self.y))

Projectile类实现（怀疑问题相关） #

class projectile(object):
    def __init__(self, x, y, radius, colour, facing):
        self.x = x
        self.y = y
        self.radius = radius
        self.colour = colour
        self.facing = facing
        self.vel = 8 * facing

    def draw(self, win):
        pygame.draw.circle(win, self.colour, (self.x, self.y), self.radius)

画面重绘函数 #

def redrawGameWindow():
    win.blit(bg, (0, 0))
    man.draw(win)
    for bullet in bullets:
        bullet.draw(win)

    pygame.display.update()


man = Player(300, 410, 64, 64)
bullets = []

主循环与核心逻辑 #

run = True
while run:
    clock.tick(framerate)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            run = False

    # 子弹更新与移除逻辑
    for bullet in bullets:
        if 500 > bullet.x > 0:
            bullet.x += bullet.vel
        else:
            bullets.remove(bullet)
            break  # 已移除该语句，问题仍存在

    # 角色控制逻辑
    keys = pygame.key.get_pressed()

    if keys[pygame.K_SPACE]:
        if man.left:
            facing = -1
        else:
            facing = 1

        if len(bullets) < 1:
            bullets.append(
                projectile(round(man.x + man.width // 2), round(man.y + man.height // 2), 6, (0, 0, 0), facing))

    if keys[pygame.K_LEFT] and man.x > man.vel:
        man.x -= man.vel
        man.left = True
        man.right = False
        man.standing = False
    elif keys[pygame.K_RIGHT] and man.x < 500 - man.width - man.vel:
        man.x += man.vel
        man.right = True
        man.left = False
        man.standing = False

    else:
        man.standing = True
        man.walkCount = 0

    if not man.isJump:
        if keys[pygame.K_UP]:
            man.isJump = True
            man.walkCount = 0
    else:
        if man.jumpCount >= -10:
            neg = 1
            if man.jumpCount < 0:
                neg = -1
            man.y -= (man.jumpCount ** 2) * 0.5 * neg
            man.jumpCount -= 1
        else:
            man.isJump = False
            man.jumpCount = 10

    redrawGameWindow()

pygame.quit()

补充说明（编辑#1） #

• 移除break语句后无改善，该语句是之前添加后忘记删除的，移除后闪烁问题依然存在。
• 闪烁似乎仅发生在子弹碰撞窗口左边缘时，但存在随机不出现的情况，因此怀疑问题可能并非完全由代码导致。

内容的提问来源于stack exchange，提问作者Crazy MANE41