Python pygame检测绘制的圆形精灵是否被点击失败

我正在做一个小游戏，如果你点击一个圆圈，它会发出砰砰的声音并返回到底部.我的问题是，当我切换到使用类和精灵来允许多个圆圈时，它将不再检测是否点击了一个圆圈.我做错了什么？

class Bubble(pygame.sprite.Sprite):
    def __init__(self):

        self.radius = random.randint(50,100)
        self.image = pygame.Surface([self.radius/2,self.radius/2])
        self.image.fill(blue)
        self.image = pygame.image.load(bPath+"Images\\Bubble.png")
        self.rect = self.image.get_rect()
        self.bx = random.randint(70, 1466)
        self.x = self.bx
        self.y = 930
        self.way = 0
        self.rect.x = self.x
        self.rect.y = self.y

    def move(self):
        pygame.draw.circle(tv,blue,(self.x,self.y),self.radius)
        
        self.y -= 2

        if self.x == self.bx+20:
            self.way = 1
        elif self.x == self.bx-20:
            self.way = 0
        else:
            pass

        if self.way == 0:
            self.x += 1
        else:
            self.x -= 1

        if self.y <= 0:
            self.bx = random.randint(70, 1466)
            self.x = self.bx
            self.y = 930
            self.radius=random.randint(50,100)
        else:
            pass

bubbleList = []

nBubble = 0
while True:
    tv.fill(white)

    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == KEYDOWN:
            if event.key == K_ESCAPE:
                pygame.quit()
                sys.exit()
        elif event.type == pygame.MOUSEBUTTONDOWN:
            for b in bubbleList:
                if b.rect.collidepoint(pygame.mouse.get_pos()):
                    print("hi")
                    pygame.mixer.music.play()

    if pygame.time.get_ticks() > nBubble:
        nBubble += 5000

        if len(bubbleList) < 10:
            bubbleList.append(Bubble())
        else:
            pass
        
    for b in bubbleList:
        b.move()
    
    pygame.display.update()
    FramePerSec.tick(fps)

我已经在这里查看了其他几个类似的帖子，并实现了它们，正如您可能看到的那样.它不会在我的电脑上抛出任何错误，只是单击时什么也不做.