运行此脚本时出现奇怪的顺序问题[重复]

Question

所以我正在为 sea jam 制作一个游戏，并且我一直在运行我的两个按钮时遇到这个错误，我认为它不是函数或类之一，但如果它是请分享我需要在 29 日之前完成这个，这是我的第一次果酱，这里是代码：

import pygame

sh = 400
sw = 400

pygame.font.init() # you have to call this at the start, 
                   # if you want to use this module.


screen = pygame.display.set_mode((sh, sw))
b = pygame.image.load("b.png").convert_alpha()
ub = pygame.image.load("ub.png").convert_alpha()
scr = 0


class ubut():
  def __init__(self,x,y,image):
    self.image = image
    self.rect = self.image.get_rect()
    self.rect.topleft = (x, y)
  def draw(self):
    screen.blit(self.image, (self.rect.x, self.rect.y))
    mpos = pygame.mouse.get_pos()
    global scr
    for event in pygame.event.get():
      if event.type == pygame.MOUSEBUTTONUP:
        if self.rect.collidepoint(mpos):
          print("x")


class but():
  def __init__(self,x,y,image):
    self.image = image
    self.rect = self.image.get_rect()
    self.rect.topleft = (x, y)
  def draw(self):
    screen.blit(self.image, (self.rect.x, self.rect.y))
    mpos = pygame.mouse.get_pos()
    for event in pygame.event.get():
      if event.type == pygame.MOUSEBUTTONUP:
        if self.rect.collidepoint(mpos):
          global scr
          scr += 1
          print(scr)
  def redb(self):
        mpos = pygame.mouse.get_pos()
        for event in pygame.event.get():
          if event.type == pygame.MOUSEBUTTONUP:
            if self.rect.collidepoint(mpos):
              global scr
              scr += 1
              print(scr)
  def purpb(self):
        mpos = pygame.mouse.get_pos()
        for event in pygame.event.get():
          if event.type == pygame.MOUSEBUTTONUP:
            if self.rect.collidepoint(mpos):
              print("x")




buttton = but(125,125 , b)
ubutton = but(125,225,ub)
run = True

while run:
  screen.fill((0,255,0))
  ubutton.purpb()
  ubutton.draw()
  buttton.draw()
  buttton.redb()
  
  mpos = pygame.mouse.get_pos()
  
  pygame.display.update()

感谢您的帮助。

Answer 1

pygame.event.get()](https://www.pygame.org/docs/ref/event.html#pygame.event.get) 获取所有消息并将它们从队列中删除。请参阅文档：

这将获取所有消息并将它们从队列中删除。 [...]

如果在多个事件循环中调用pygame.event.get()，则只有一个循环接收事件。结果，似乎错过了一些事件。每帧获取一次事件并将事件列表传递给处理它们的方法：

class ubut():
  # [...]
  def draw(self, event_list):
    screen.blit(self.image, (self.rect.x, self.rect.y))
    global scr
    for event in event_list:
      if event.type == pygame.MOUSEBUTTONUP:
        if self.rect.collidepoint(event.pos):
          print("x")


class but():
  # [...]

  def draw(self, event_list):
    screen.blit(self.image, (self.rect.x, self.rect.y))
    for event in event_list:
      if event.type == pygame.MOUSEBUTTONUP:
        if self.rect.collidepoint(event.pos):
          global scr
          scr += 1
          print(scr)

while run:
  # [...]

  event_list = pygame.event.get()
  ubutton.draw(event_list)
  buttton.draw(event_list)

  # [...]