为什么我的 PyGame 应用程序根本没有运行? [英] Why is my PyGame application not running at all?

问题描述

我有一个简单的 Pygame 程序:

#!/usr/bin/env python导入pygame从 pygame.locals 导入 *pygame.init()赢 = pygame.display.set_mode((400,400))pygame.display.set_caption(我的第一场比赛")

但是每次我尝试运行它时，我都会得到这个:

pygame 2.0.0 (SDL 2.0.12, python 3.8.3)来自 pygame 社区的您好.https://www.pygame.org/contribute.html

然后什么也没发生.为什么我不能运行这个程序?

解决方案

您的应用程序运行良好.但是，您还没有实现应用程序循环:

导入pygame从 pygame.locals 导入 *pygame.init()赢 = pygame.display.set_mode((400,400))pygame.display.set_caption(我的第一场比赛")时钟 = pygame.time.Clock()运行 = 真运行时:# 处理事件对于 pygame.event.get() 中的事件:如果 event.type == pygame.QUIT:运行 = 错误# 更新游戏对象# [...]# 清除显示win.fill((0, 0, 0))# 绘制游戏对象# [...]# 更新显示pygame.display.flip()# 限制每秒帧数时钟滴答(60)pygame.quit()

典型的 PyGame 应用程序循环必须:

• 通过调用 另见 事件和应用程序循环

  I have a simple Pygame program:

  #!/usr/bin/env python
  
  import pygame
  from pygame.locals import *
  
  pygame.init()
  
  win = pygame.display.set_mode((400,400))
  pygame.display.set_caption("My first game")
  

  But every time I try to run it, I get this:

  pygame 2.0.0 (SDL 2.0.12, python 3.8.3)
  Hello from the pygame community. https://www.pygame.org/contribute.html
  

  And then nothing happens. Why I can't run this program?

  解决方案

  Your application works well. However, you haven't implemented an application loop:

  import pygame
  from pygame.locals import *
  
  pygame.init()
  
  win = pygame.display.set_mode((400,400))
  pygame.display.set_caption("My first game")
  clock = pygame.time.Clock()
  
  run = True
  while run:
  
      # handle events
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              run = False
  
      # update game objects
      # [...]
  
      # clear display
      win.fill((0, 0, 0))
  
      # draw game objects
      # [...]
  
      # update display
      pygame.display.flip()
  
      # limit frames per second
      clock.tick(60) 
  
  pygame.quit()
  

  The typical PyGame application loop has to:

  • handle the events by calling either pygame.event.pump() or pygame.event.get().
  • update the game states and positions of objects dependent on the input events and time (respectively frames)
  • clear the entire display or draw the background
  • draw the entire scene (blit all the objects)
  • update the display by calling either pygame.display.update() or pygame.display.flip()
  • limit frames per second to limit CPU usage with pygame.time.Clock.tick

  See also Event and application loop

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