光标不断切换

Question

因此，我编写了一个函数，当我将鼠标悬停在按钮上时，该函数可以更改光标。我写了它，以便可以将图片用作按钮并将其放置在我想要的任何位置。它适用于一个按钮，但是当我添加多个按钮时，光标会不断地来回切换。我猜要怪“如果”的说法，有什么想法吗？谢谢。

def hover_button(variable_name, scale_percentage, x, y):

    mouse_position = pygame.mouse.get_pos()

    image_width = pygame.Surface.get_width(variable_name)
    image_height = pygame.Surface.get_height(variable_name)

    new_width = int(image_width * (scale_percentage/100))
    new_height = int(image_height * (scale_percentage/100))

    variable_name = pygame.transform.scale(variable_name,(new_width,new_height))
    rectang = variable_name.get_rect()
    rectangm = rectang.move((x,y))
    display.blit(variable_name, rectangm)   

    if rectangm.collidepoint(mouse_position):
        print("mouse is over 'Button'")

        _HAND_CURSOR = (
        "     XX         ",
        "    X..X        ",
        "    X..X        ",
        "    X..X        ",
        "    X..XXXXX    ",
        "    X..X..X.XX  ",
        " XX X..X..X.X.X ",
        "X..XX.........X ",
        "X...X.........X ",
        " X.....X.X.X..X ",
        "  X....X.X.X..X ",
        "  X....X.X.X.X  ",
        "   X...X.X.X.X  ",
        "    X.......X   ",
        "     X....X.X   ",
        "     XXXXX XX   ")

        _HCURS, _HMASK = pygame.cursors.compile(_HAND_CURSOR, ".", "X")
        HAND_CURSOR = ((16, 16), (5, 1), _HCURS, _HMASK)      
        pygame.mouse.set_cursor(*HAND_CURSOR)

    else:
        cursor = pygame.cursors.compile(pygame.cursors.textmarker_strings)
        pygame.mouse.set_cursor(*pygame.cursors.arrow)

def title_screen():   

    button1 = pygame.image.load("button1.png")

    while True:

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

        hover_button(button1,90,250,250)

        pygame.display.update()
        clock.tick(15)

title_screen()