为什么我的重播按钮在pygame中不起作用？

Question

I am making a replay button when my player loses on the game over screen. However, when I press replay, the screen appears for split second and then the game over screen reappears. I know I somehow have to make game_over = False, but I can't figure that out. Can anyone fix this? NOTE: Not all of the code is included, such as code in the button class " init ", game_over_screen design, etc.

class Button(object):

        mouse = pygame.mouse.get_pos()

        if event.type == pygame.MOUSEMOTION:
            self.hovered = self.rect.collidepoint(mouse)
        if event.type == pygame.MOUSEBUTTONDOWN and command is not None:
            if self.hovered:
                if command == 'play':
                    game_loop()
                elif command == 'quit':
                    pygame.quit()
                    quit()
                elif command == 'instructions':
                    instructions()
                elif command == 'credits':
                    credits()
                elif command == 'back':
                    start_screen()

def game_over_screen():

    b_play = Button("Replay", 55, WHITE, 180, 285, 120, 60, BLUE, LIGHT_BLUE)

    game_over = True

    while game_over:
        clock.tick(FPS)
        for events in pygame.event.get():
            if events.type == pygame.QUIT:
                pygame.quit()
                quit()

            b_play.handle_event(events, 'play')

        b_play.update()

        b_play.draw(screen)

        pygame.display.flip()


def game_loop():  # Game loop

    game_over = False

    running = True

    while running:

        clock.tick(FPS)
        events = pygame.event.get()
        for events in events:
            if events.type == pygame.QUIT:
                pygame.quit()
                quit()

        # shows game over screen and resets stats and graphics
        if game_over:
            game_over_screen()
            game_over = False
            global all_sprites, mobs, bullets, powerups, player, score
            all_sprites = pygame.sprite.Group()
            mobs = pygame.sprite.Group()
            bullets = pygame.sprite.Group()
            powerups = pygame.sprite.Group()
            player = Player()
            all_sprites.add(player)
            for i in range(8):
                newmob()
            score = 0

Answer 1

I'm not sure if this is the problem but I see some problem: game_loop runs game_over_screen which should use return to go back to game_loop and it should continue code inside if game_over: and reset all varaibles. But instead of returning to previous place it runs again game_loop from beginning and it resets only game_over = False and it starts while running -loop. But it didn't reset other variables (ie. Player's energy) so these variables can ends game sooner then you expected. And it can run game_over_screen again so fast.

Button should have command return which doesn't run function but returns True

    if event.type == pygame.MOUSEBUTTONDOWN and command is not None:
        if self.hovered:
            if command == 'play':
                game_loop()
            elif command == 'quit':
                pygame.quit()
                quit()
            elif command == 'instructions':
                instructions()
            elif command == 'credits':
                credits()
            elif command == 'back':
                start_screen()
            elif command == 'return':
                return True

and then you can use True to return to previous function

if b_play.handle_event(events, 'return') is True:
     return