Python:在 pygame 中进行多个循环的更好方法是什么? [英] Python : What is the better way to make multiple loops in pygame?

问题描述

我想知道在我的 pygame 项目中进行多个循环的最佳方法是什么.这是我想要的所有循环:

I would know what is the best way to make multiple loops inside my pygame project. This is all loops I would have :

load loop
game loop
main loop
setting loop
pause loop

但这是最好的方法吗?

这是我的代码的样子

run = True
while run :
   # do load loop

def main():
   run = True
   while run :
      if loop == 'main' :
         run2 = True
         while run2 :
             # pygame loop

      if loop == 'pause' :
         run2 = True
         while run2 :
            # other loop
...

if __name__ == '__main__' :
   main()

推荐答案

为什么需要多个嵌套循环?一个存储游戏当前状态的变量就足够了:

Why do you need multiple nested loops? A variabel which stores the current state of the game is sufficient:

def main():
    gamestate = 'load'
    run = True
    while run:

        if gamestate == 'load':
            # [...]

        elif gamestate == 'game':
            # [...]

        # [...]
            # [...]

        pygame.display.flip()

if __name__ == '__main__' :
    main()

如果你想切换游戏的状态，那么你所要做的就是改变变量gamestate.
您只需要一个运行游戏的主循环.循环中发生的事情可能会有所不同，具体取决于游戏的当前状态.但它始终是同一个循环，处理事件、清除显示、绘制场景并最终更新显示.

If you want to switch the state of the game, then all you have to do is change the variable gamestate.
One main loop which runs the game is all you need. That what happens in the loop, may vary, dependent on the current state of the game. But it is always the same loop, which handles the events, clears the display, draws the scene and finally updates the display.

注意，您甚至可以定义执行游戏不同部分的函数，但函数中不需要循环:

Note, you can even define functions which do the different parts of the game, but you don't need a loop in the functions:

def load(events):
    # [...]

def game(events):
    # [...]

def main():
    gamestate = 'load'
    run = True
    while run:

        events = pygame.event.get()
        for event in events:
            if event.type == pygame.QUIT:
                run = False

        # [...]

        if gamestate == 'load':
            load(events)

        elif gamestate == 'game':
            game(events)

        # [...]
            # [...]

        pygame.display.flip()

if __name__ == '__main__' :
    main()

甚至在课堂上:

class MyGame:
    def __init__(self):
        self.gamestate = 'load'
        self.run = True
        self.events = []

    def load(self):
        # [...]

    def game(self):
        # [...]

    def main(self):
        while self.run:

            self.events = pygame.event.get()
            for event in self.events:
                if event.type == pygame.QUIT:
                    self.run = False

            # [...]

            if self.gamestate == 'load':
                self.load()
            elif self.gamestate == 'game':
                self.game()
            # [...]
                # [...]

            pygame.display.flip()

if __name__ == '__main__' :
    app = MyGame()
    app.main()

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