# 开发日期: 2024/4/26
import pickle
class GameStats():
    """跟踪游戏的统计信息"""

    def __init__(self, ai_settings):
        """初始化统计信息"""
        self.ai_settings = ai_settings
        self.reset_stats()
        # 游戏刚启动的时候处于活动状态
        self.game_active = False
        # 在任何情况下都不应该重置最高分
        self.high_score = 0

    def reset_stats(self):
        """初始化在游戏运行期间可能变化的统计信息"""
        self.ships_left = self.ai_settings.ship_limit
        self.score = 0
        self.level = 1
    def save_high_score(self):
        # 以二进制写入模式打开名为"high_score.pk1"的文件
        f = open("high_score.pk1", 'wb')
        # 使用pickle模块将high_score的字符串表现形式写入文件
        pickle.dump(str(self.high_score), f, 0)
        f.close()
    def load_high_score(self):
        # 以二进制读取模式打开名为"high_score.pk1"的文件
        f = open("high_score.pk1", 'rb')
        try:
            # 从文件中加载（反序列化）数据
            str_high_score = pickle.load(f)
            self.high_score = int(str_high_score)
        except EOFError:
            # 如果文件意外结束（EOFError）或没有文件可加载，则设置 self.high_score 为 0
            self.high_score = 0
        finally:
            f.close()