Python 单击“重试”按钮时无法关闭pygame窗口

我正在制作一个宇宙飞船游戏，你可以控制一艘宇宙飞船并发射子弹来摧毁敌人的宇宙飞船。当你输了点击重试按钮时，你应该能够重播和关闭游戏。然而，即使我能玩多次，我也不能关上窗户。我认为这与检查是否单击了重试按钮的if语句有关。或者可能与其他事情有关。我怎样才能把它修好，这样我就可以随时关上窗户了

这是我当前的代码：

import pygame
from pygame.locals import *
from random import randint, choice
from tools import *

pygame.init()
pygame.font.init()

SCREEN_X = 800
SCREEN_Y = 500
CENTER_POS = (400, 225)

screen = pygame.display.set_mode((SCREEN_X, SCREEN_Y))


class Spaceship(pygame.sprite.Sprite):
    """A spaceship object. Used for the player."""

    def __init__(self, s, x, y):
        pygame.sprite.Sprite.__init__(self)

        self.screen = s
        self.x, self.y = x, y
        self.image = pygame.image.load("spaceship.png")
        self.image = pygame.transform.scale(self.image, (175, 175))
        self.rect = self.image.get_rect()
        self.rect.center = (self.x, self.y)

    def update(self):
        """Updates the spaceship rect"""
        self.rect.center = (self.x, self.y)


class Bullet(pygame.sprite.Sprite):
    """A bullet object. Appears when the player clicks."""

    def __init__(self, s, x, y):
        pygame.sprite.Sprite.__init__(self)

        self.screen = s
        self.x, self.y = x, y
        self.image = pygame.image.load("bullet.png")
        self.image = pygame.transform.scale(self.image, (100, 100))
        self.rect = self.image.get_rect()
        self.rect.center = (self.x, self.y)

    def update(self):
        """Let's the bullet move upward."""

        self.y -= 5
        self.rect.center = (self.x, self.y)
        if self.y < 0:
            self.kill()


class Enemy(pygame.sprite.Sprite):
    """An enemy object. The player's job is to destroy enemies."""

    def __init__(self, s, x, y, t):
        pygame.sprite.Sprite.__init__(self)

        self.type = t
        self.screen, self.x, self.y = s, x, y
        self.image = pygame.image.load(get_enemy_image()[self.type])

        # There is an if statement because the
        # N1 Galaxy Fighter and M7 Comet Glider need different sizes

        if self.type == "N1 Galaxy Fighter":
            self.image = pygame.transform.scale(self.image, (235, 215))
        elif self.type == "M7 Comet Glider":
            self.image = pygame.transform.scale(self.image, (155, 215))
        self.rect = self.image.get_rect()
        self.rect = self.image.get_rect()
        self.rect.center = (self.x, self.y)
        self.score_given = get_enemy_given_score()[self.type]

    def update(self):
        if self.y < 0:
            self.kill()
        self.y += 3
        self.rect.center = (self.x, self.y)


class GameOverBackground(pygame.sprite.Sprite):
    """The game over background object."""

    def __init__(self, s, x, y, size=(100, 100)):
        pygame.sprite.Sprite.__init__(self)

        self.screen, self.x, self.y = s, x, y
        self.size = size
        self.image = pygame.image.load("Game_Over.jpg")
        self.image = pygame.transform.scale(self.image, self.size)
        self.rect = self.image.get_rect()

    def blitme(self):
        """Blits the game over image on the screen"""
        self.screen.blit(self.image, self.rect)


class Coin(pygame.sprite.Sprite):
    """A coin object."""

    def __init__(self, pos=(0, 0), size=(100, 100)):
        pygame.sprite.Sprite.__init__(self)

        self.x, self.y = pos[0], pos[1]
        self.size = size
        self.image = pygame.image.load("coin.png")
        self.image = pygame.transform.scale(self.image, self.size)
        self.rect = self.image.get_rect()
        self.rect.center = (self.x, self.y)

    def update(self):
        """Updates the coin rect"""
        self.rect.center = (self.x, self.y)


class StartButton(pygame.sprite.Sprite):
    def __init__(self, s, x, y, size=None):
        pygame.sprite.Sprite.__init__(self)

        self.screen = s
        self.x = x
        self.y = y
        self.image = pygame.image.load("start_button.png")

        if size is not None:
            self.image = pygame.transform.scale(self.image, size)

        self.rect = self.image.get_rect()
        self.rect.center = (self.x, self.y)

    def blitme(self):
        self.screen.blit(self.image, self.rect)


class TryAgainButton(pygame.sprite.Sprite):
    def __init__(self, s, x, y, size=None):
        pygame.sprite.Sprite.__init__(self)

        self.screen = s
        self.x = x
        self.y = y
        self.image = pygame.image.load("try_again.png")

        if size is not None:
            self.image = pygame.transform.scale(self.image, size)

        self.rect = self.image.get_rect()
        self.rect.center = (self.x, self.y)

    def blitme(self):
        self.screen.blit(self.image, self.rect)


def main():
    bg = GameOverBackground(screen, 0, 0, size=(800, 500))

    spaceship = Spaceship(screen, 400, 400)

    start_button = StartButton(screen, CENTER_POS[0], CENTER_POS[1], size=(300, 195))
    button_rect = start_button.image.get_rect(topleft=(start_button.x, start_button.y))
    game_started = False

    try_again_button = TryAgainButton(screen, CENTER_POS[0], CENTER_POS[1]+215, size=(300, 195))
    button_rect_2 = try_again_button.image.get_rect(topleft=(try_again_button.x, try_again_button.y))
    try_again = False

    bullets = pygame.sprite.Group()
    enemies = pygame.sprite.Group()
    coins = pygame.sprite.Group()

    clock = pygame.time.Clock()

    enemy_interval = 2000
    enemy_event = pygame.USEREVENT + 1
    pygame.time.set_timer(enemy_event, enemy_interval)

    coin_interval = 3500
    coin_event = pygame.USEREVENT + 1
    pygame.time.set_timer(coin_event, coin_interval)

    score = 0
    lives = 3

    with open("high_score.txt", "r") as file:
        highscore = file.read()

    font = pygame.font.SysFont("Arial", 30)
    score_text_surface = font.render("Score: {:,}".format(score), True, (0, 0, 0))
    lives_text_surface = font.render("HP: %s" % lives, True, (0, 0, 0))
    high_score_text_surface = font.render("High Score: %s" % highscore, True, (0, 0, 0))

    spaceship_collided = False

    running = True
    while running:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False

            if event.type == MOUSEBUTTONDOWN:
                if not game_started:
                    if button_rect.collidepoint(event.pos):
                        game_started = True

                if game_started is True and button_rect_2.collidepoint(event.pos):
                    try_again = True

            if game_started and event.type == MOUSEBUTTONDOWN:
                bullet = Bullet(screen, spaceship.x, spaceship.y - 20)
                bullets.add(bullet)

            if game_started and event.type == enemy_event and not lives <= 0:
                enemy = Enemy(screen, randint(-100, 725), 0, choice(["N1 Galaxy Fighter", "M7 Comet Glider"]))
                enemies.add(enemy)

            if game_started and event.type == coin_event and not lives <= 0:
                if len(coins) < 100:
                    coins.add(Coin((randint(-125, 750), randint(-200, 400))))

        screen.fill((255, 255, 255))  # DO NOT DRAW ANYTHING IN FRONT OF THIS LINE, I'M WARNING YOU

        if not game_started:
            start_button.blitme()

        if try_again:
            main()

        if game_started:
            bullets.update()

            key = pygame.key.get_pressed()
            amount = 5

            if key[pygame.K_a]:
                spaceship.x -= amount
            elif key[pygame.K_d]:
                spaceship.x += amount
            elif key[pygame.K_w]:
                spaceship.y -= amount
            elif key[pygame.K_s]:
                spaceship.y += amount

            spaceship.update()

            if not lives <= 0:
                screen.blit(spaceship.image, spaceship.rect)

            if not lives <= 0:
                bullets.draw(screen)
                enemies.draw(screen)

                coins.update()
                coins.draw(screen)

                for i in enemies:
                    i.update()
                    if pygame.sprite.spritecollide(i, bullets, True):
                        score += i.score_given
                        i.kill()

            if spaceship_collided and lives <= 0:
                bg.blitme()
                if score > int(highscore):
                    with open("high_score.txt", "w") as file:
                        file.write(str(score))

            if score >= 99999:
                score = 99999

            if not lives <= 0:
                score_text_surface = font.render("Score: {:,}".format(score), True, (0, 0, 0))
                screen.blit(score_text_surface, (590, 0))

                lives_text_surface = font.render("HP: %s" % lives, True, (0, 0, 0))
                screen.blit(lives_text_surface, (260, 0))

                high_score_text_surface = font.render("High Score: %s" % highscore, True, (0, 0, 0))
                screen.blit(high_score_text_surface, (360, 0))

            if pygame.sprite.spritecollide(spaceship, enemies, dokill=True):
                lives -= 1
                spaceship_collided = True

            if pygame.sprite.spritecollide(spaceship, coins, dokill=True):
                score += 10

        if lives <= 0:
            try_again_button.blitme()

        pygame.display.update()
        clock.tick(60)


if __name__ == "__main__":
    main()

---

你不能那样做。永远不要递归地运行主应用程序循环。问题是

如果重试： 主要的 你实际上在做的是在正在进行的游戏中开始一个新游戏。如果要关闭游戏，则需要关闭以前启动的所有游戏。因此，您必须多次按下close

与递归调用main不同，您要么重置所有游戏状态，要么在循环中调用main。 在您的特定情况下，后一种解决方案更容易实现。删除递归调用，但设置running=False，从main返回try\u，并在返回True时调用main：

def主： [...] 再试一次=False 运行=真 运行时： [...] 如果重试：

---

main你不能那样做。永远不要递归地运行主应用程序循环。问题是

如果重试： 主要的 你实际上在做的是在正在进行的游戏中开始一个新游戏。如果要关闭游戏，则需要关闭以前启动的所有游戏。因此，您必须多次按下close

与递归调用main不同，您要么重置所有游戏状态，要么在循环中调用main。 在您的特定情况下，后一种解决方案更容易实现。删除递归调用，但设置running=False，从main返回try\u，并在返回True时调用main：

def主： [...] 再试一次=False 运行=真 运行时： [...] 如果重试：

---

好的，现在我明白了。谢谢好了，现在我明白了。谢谢