python - 如何在 Pygame 中每次重置游戏时初始化新对象

Question

每次用户按 c 键时，我都会尝试重新创建新对象，以便我可以从起点再次加载游戏。但我找不到办法这样做。

这是我迄今为止尝试过的:

def initializeGame(theGame):

    while run:
        theGame.clock.tick(FPS)

        # This function consists code for Events
        theGame.events()
        # This function consists code from enemy hit events
        theGame.hit_or_not()
        # This function consists code for bullet hit events
        theGame.bulletHit_or_not()
        # This function consists code for player movements
        theGame.movements()
        # This function consists code for drawing the sprites over the screen
        theGame.redrawGameWindow()

def startGame(run):
    first_game = Game()

    while run:
        initializeGame(first_game)

        keys = pygame.key.get_pressed()

        if keys[pygame.K_ESCAPE]:
            run = False

        if keys[pygame.K_c]:
            new_game = Game()
            initializeGame(new_game)

startGame(True)

我想做的就是当我按“c”键时，游戏必须从起点重新启动，为此我必须重新创建新的“Game()”类对象并初始化游戏

游戏类代码 - https://pastebin.com/abAiey34

Answer 1

避免游戏循环中出现游戏循环，这意味着从 initializeGame 中删除循环。
initializeGame 名称具有误导性，请将其命名为 runGame:

def runGame(theGame):

    # This function consists code for Events
    theGame.events()
    # This function consists code from enemy hit events
    theGame.hit_or_not()
    # This function consists code for bullet hit events
    theGame.bulletHit_or_not()
    # This function consists code for player movements
    theGame.movements()
    # This function consists code for drawing the sprites over the screen
    theGame.redrawGameWindow()

因此，拥有一个游戏就足够了，它只是“重置”创建一个新的游戏对象。
在唯一的游戏循环中，必须调用 runGame:

def startGame(run):

    game = Game()
    while run:
        theGame.clock.tick(FPS)

        # run the game
        runGame(game)

        # get keys
        keys = pygame.key.get_pressed()

        # handle keys
        if keys[pygame.K_ESCAPE]:
            run = False
        if keys[pygame.K_c]:
            game = Game()

startGame(True)

注意，startGame() 已经有一个循环，因此没有必要在任何函数中进行进一步的游戏循环。 runGame() 完成游戏框架中完成的所有操作。 runGame() 在 startGame() 的游戏循环中不断调用。
如果必须开始一个新游戏，创建一个新的 Game 对象就足够了。

<小时/>

注意，pygame.key.get_pressed() 返回的状态被评估，当 pygame.events由 pygame.event.get() 处理或pygame.event.pump() .
在事件循环后调用 pygame.key.get_pressed()。

我更喜欢稍微不同的设计。获取主循环中的事件 (pygame.event.get()) 并将它们传递给 runGame() 并进一步传递给 Game.events():

class Game:

    # [...]

    def events(self, eventlist):

        for event in eventlist:
            # handle events
            # [...]

def runGame(theGame, eventlist):

    # This function consists code for Events
    theGame.events(eventlist)

    # [...]

def startGame(run):

    game = Game()
    while run:
        theGame.clock.tick(FPS)

        # run the game
        eventlist = pygame.event.get()
        runGame(game, eventlist)

        # get keys
        keys = pygame.key.get_pressed()

        # handle keys
        if keys[pygame.K_ESCAPE]:
            run = False
        if keys[pygame.K_c]:
            game = Game()