为什么按钮不绘制？

我不明白为什么按钮不绘制在它之前工作的背景上 这不会显示错误。 这是代码------> 这段代码是错误的吗？我的问题是否可以重现？它可能在按钮的代码中，我将不胜感激

import pygame
pygame.init()
screen = pygame.display.set_mode((3840,2160))
running = True
mouse = pygame.mouse.get_pos()

pygame.display.set_caption("GermanBall")
bg = pygame.image.load(r"C:\Users\tomarj\OneDrive - Tata Advanced Systems Limited\Desktop\War Crime\Tan.jpg")
icon = pygame.image.load(r"C:\Users\tomarj\OneDrive - Tata Advanced Systems Limited\Desktop\War Crime\box.png")
button1 = pygame.image.load(r"C:\Users\tomarj\OneDrive - Tata Advanced Systems Limited\Desktop\War Crime\shirt.png").convert_alpha()
class Button():
        def __init__(self,x,y,image, scale):
            width = image.get_width()
            height = image.get_height()
            self.image = pygame.transform.scale(image, (int(width * scale), int(height * scale)))
            self.rect = self.image.get_rect()
            self.rect.topleft = (x,y)
            posmoose = pygame.mouse.get_pos()
            if self.rect.collidepoint(posmoose):
                if pygame.mouse.get_pressed()[0] == 1:
                    print("click")
        def draw(self):
            screen.blit(self.image,(self.rect.x,self.rect.y))
stat = Button(1550,700,button1,0.5) 




pygame.display.set_icon(icon)

while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
screen.blit(bg,(0,0))
stat.draw()
pygame.display.update()

你的类中的缩进是错误的：方法draw, intro, ... 应该处于同一水平__init__。但基本上你的类是无用的，因为你没有创建该类的任何对象。你应该有类似的东西my_button = Button(...)在您的代码中（以及类本身之外）。

将你的班级提升到最高水平也是一个很好的做法。

所以也许你应该从这样的事情开始：

import pygame
pygame.init()
screen = pygame.display.set_mode((3840,2160))
running = True
mouse = pygame.mouse.get_pos()

pygame.display.set_caption("GermanBall")
bg = pygame.image.load(r"C:\Users\tomarj\OneDrive - Tata Advanced Systems Limited\Desktop\War Crime\Tan.jpg")
icon = pygame.image.load(r"C:\Users\tomarj\OneDrive - Tata Advanced Systems Limited\Desktop\War Crime\box.png")
button1 = pygame.image.load(r"C:\Users\tomarj\OneDrive - Tata Advanced Systems Limited\Desktop\War Crime\shirt.png").convert_alpha()

pygame.display.set_icon(icon)

class Button():
    def __init__(self,x,y,image, scale):
        ...
    def draw(self):
        ...
    def intro(self):
        ...
    def game(self):
        ...
    def manager():
        ...

my_button = Button(100, 200, button1, 1.0)  # <- create a button
while running == True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
    screen.blit(bg,(0,0))
    my_button.draw()  # <- draw the button
    pygame.display.update()