python pygame暂停功能

Question

我是初学者，我的代码有问题。在这里，您可以看到我的代码的简短摘录。这是我创建的一个简单的蛇游戏，但是我试图添加一个暂停。我知道了，但是当我开始暂停时，我无法关闭它。我的代码中可能存在一个基本错误，所以我无法前进。我希望你能帮助我。预先谢谢！

def checkquit(e):
    running = True
    pause = False
    for ev in e:
        if ev.type == pygame.QUIT:
            exit(0)
            running = True

        if ev.type == pygame.KEYDOWN and ev.key == pygame.K_ESCAPE:
            quit(0)
            running = True

        if ev.type == pygame.KEYDOWN and ev.key == pygame.K_p:
            pause = True




    while pause:
        #running = False
        pause = True   
        red = (255,0,0)
        screen = pygame.display.set_mode((800,500))
        screen.fill((0,0,0))
        myfont=pygame.font.SysFont("monospace",50)
        myfonttwo=pygame.font.SysFont("monospace",10)
        text1=myfont.render("Pause!",100,red)
        text2=myfont.render("Please restart the game",100,red)
        screen.blit(text2,(10,200))
        screen.blit(text1,(230,100))
        pygame.display.update()

        for ev in e:
            if ev.type == pygame.QUIT:
                pause = False
            if ev.type == pygame.KEYDOWN and ev.key == pygame.K_ESCAPE:
                pause = False      
            if ev.type == pygame.KEYDOWN and ev.key == pygame.K_p:
                pause = True

Answer 1

暂停屏幕在单独的应用程序循环中显示。您还必须在该循环中获取事件。注意，在您的代码中，e的内容在“暂停”循环中永远不会更改：

def checkquit(e):
    global running
    running = True
    pause = False
    for ev in e:
        if ev.type == pygame.QUIT:
            exit(0)
            running = True
        if ev.type == pygame.KEYDOWN and ev.key == pygame.K_ESCAPE:
            quit(0)
            running = True
        if ev.type == pygame.KEYDOWN and ev.key == pygame.K_p:
            pause = True

    while pause:

        # [...]


        # get the new events
        e = pygame.event.get()

        # handle the events in the loop
        for ev in e:
            if ev.type == pygame.QUIT:
                pause = False
            if ev.type == pygame.KEYDOWN and ev.key == pygame.K_ESCAPE:
                pause = False      
            if ev.type == pygame.KEYDOWN and ev.key == pygame.K_p:
                pause = True

runnung似乎是全局名称空间中的变量。您必须使用global statement更改其状态。此外，在“暂停”循环中重新创建窗口表面是多余的。

global

---

我建议更改游戏过程。使用1个应用程序循环。例如：

screen = pygame.display.set_mode((800,500))