如何使用搁置模块保存pygame精灵组

Question

我正在制作一个游戏，我想在其中有一个保存游戏功能。我有一个精灵组，我想使用工具架模块保存它，但在尝试保存我的精灵组时，我得到了一个'can't pickle Surface objects‘错误。我想知道是否有任何方法可以使用工具架模块来保存sprite组，如果没有，我应该使用什么其他保存方法？

Answer 1

当用户想要保存游戏时，我会将sprites的相关值存储在一个json文件中。要加载游戏，请清空精灵组，使用加载的数据重建精灵，并将它们添加到组中。例如(单击子画面将它们拖来拖去，按"s“保存，按"w”加载)：

import json

import pygame as pg


class Actor(pg.sprite.Sprite):

    def __init__(self, pos, color):
        super().__init__()
        self.color = color
        self.image = pg.Surface((32, 52))
        self.image.fill(self.color)
        self.rect = self.image.get_rect(topleft=pos)


class Game:

    def __init__(self):
        self.fps = 30
        self.done = False
        self.bg_color = pg.Color('gray13')
        self.clock = pg.time.Clock()
        self.screen = pg.display.set_mode((640, 480))
        actor1 = Actor((250, 120), pg.Color('steelblue1'))
        actor2 = Actor((400, 260), pg.Color('sienna1'))
        self.all_sprites = pg.sprite.Group(actor1, actor2)
        self.selected = None

    def run(self):
        while not self.done:
            self.handle_events()
            self.run_logic()
            self.draw()
            self.clock.tick(self.fps)

    def handle_events(self):
        for event in pg.event.get():
            if event.type == pg.QUIT:
                self.done = True
            elif event.type == pg.MOUSEBUTTONDOWN:
                if self.selected:
                    self.selected = None
                else:
                    for sprite in self.all_sprites:
                        if sprite.rect.collidepoint(event.pos):
                            self.selected = sprite
            elif event.type == pg.MOUSEMOTION:
                if self.selected:
                    self.selected.rect.x += event.rel[0]
                    self.selected.rect.y += event.rel[1]
            elif event.type == pg.KEYDOWN:
                if event.key == pg.K_s:
                    self.save()
                elif event.key == pg.K_w:
                    self.load()

    def run_logic(self):
        self.all_sprites.update()

    def draw(self):
        self.screen.fill(self.bg_color)
        self.all_sprites.draw(self.screen)
        pg.display.flip()

    def save(self):
        with open('save_game.json', 'w') as file:
            print('Saving')
            data = [(sprite.rect.topleft, sprite.color[:4])
                    for sprite in self.all_sprites]
            json.dump(data, file)

    def load(self):
        with open('save_game.json', 'r') as file:
            print('Loading')
            data = json.load(file)
            self.selected = None
            self.all_sprites.empty()
            for pos, color in data:
                self.all_sprites.add(Actor(pos, color))


if __name__ == '__main__':
    pg.init()
    Game().run()
    pg.quit()