如何通过按下按钮 'r' 来重新启动我的程序？

Question

好的，我已经在 Python 3.7.4 和 Pygame 1.9.6 中创建了 Space Invaders。我已经让一切正常工作，没有错误或任何东西。我什至让暂停按钮工作得很好。就在屏幕显示 'GAME OVER' 文本表示你输了的时候。我想在文本消失后弹出一个 window 要求再次播放。但我只是不知道从哪里开始。我查看了 How do I restart a program based on user input? 寻求帮助，但我不明白在哪里实施它或在哪里查看。这是我在 Pygame.

中创建的第一个真正的 project/game

代码：

paused = False
running = True
while running:
    # RGB =  Red, Green, Blue
    screen.fill((0, 0, 0))
    # Background Image
    screen.blit(background, (0, 0))
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_p:  # Pausing
                paused = True
            if event.key == pygame.K_u:  # Unpausing
                paused = False
    if not paused:
                '''The rest of the code, with the movement key presses, etc.'''

由于 'while running loop' 以上的所有内容都在不断加载或用于数据检索，例如图像、图像应位于的坐标、背景音乐等。所以我希望它像 pausing/unpausing 当我按下说 'r' 时的部分代码。我想在不退出的情况下重播该程序。所以我会非常感谢人们的帮助。谢谢大家

Answer 1

您必须在对象中创建函数或方法来重置数据并在每场比赛前使用它。您可以为此使用外部 while 循环。

# executed only once
pygame.init()
screen = ...
# .. load data ...
player = ...
enemy = ...

gameing = True
while gameing:
    
    # reset data before every game
    player.reset()
    enemy.reset()
    score = 0
    
    paused = False
    running = True
    
    while running:

        for event in pygame.event.get():
            if event.type == pygame.QUIT:  # exit game
                running = False
                gameing = False
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_r:  # restart game (but don't exit)
                    running = False
                    #gameing = True
                if event.key == pygame.K_x:  # exit game and program
                    running = False
                    gameing = False

        if game_over:  # restart game (but don't exit)
           running = False
           #gameing = True

您也可以按照评论中提到的@Starbuck5 组织它 - 但是您应该使用 running 退出程序而不是在游戏结束时退出游戏

def reset():
    global score, paused, running

    player.reset()
    enemy.reset()
    score = 0
    paused = False
    running = True

# executed only once
pygame.init()
screen = ...
# .. load data ...
player = ...
enemy = ...

# (re)set data before first game
reset()    

while running:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:  # exit game
            running = False
            gameing = False
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_r:  # restart game (but don't exit)
                #running = False  # DON'T DO THIS
                reset()

            if event.key == pygame.K_x:  # exit game and program
                running = False

   if game_over:  # restart game (but don't exit)
      #running = False  # DON'T DO THIS
      reset()

这需要对每个必须重置的变量使用 global，这样当您在类中有代码时它会更有用，您可以使用 self. 而不是 global

如何通过按下按钮 'r' 来重新启动我的程序？

How to restart my program with a button press 'r'?

python

pygame

python-3.7