import pygame.font
from pygame.sprite import Group
from ship import Ship
class Scoreboard:
        #"""显示得分信息的类"""

    def __init__(self, ai_game):
        #"""初始化显示得分涉及的属性"""
        self.screen = ai_game.screen
        self.screen_rect = self.screen.get_rect()
        self.settings = ai_game.settings
        self.stats = ai_game.stats
        
        # """显示得分信息时使用的字体设置"""
        self.text_color = (30, 30, 30)
        self.font = pygame.font.SysFont(None, 48)
        # """准备包含最高得分和当前得分的图像"""
        self.prep_score()
        self.prep_high_score()
        self.prep_level()
        self.prep_ships()

    def prep_score(self):
        #"""将得分转换为一幅渲染的图像"""
        score_str = str(self.stats.score)
        self.score_image = self.font.render(score_str, True,
                self.text_color, self.settings.bg_color)
                
        # """在屏幕右上角显示得分"""
        self.score_rect = self.score_image.get_rect()
        self.score_rect.right = self.screen_rect.right - 20
        self.score_rect.top = 20

    def show_score(self):
        #"""在屏幕上显示得分、等级和余下的飞船数"""
        self.screen.blit(self.score_image, self.score_rect)
        self.screen.blit(self.high_score_image, self.high_score_rect)
        self.screen.blit(self.level_image, self.level_rect)
        self.ships.draw(self.screen)

    def prep_high_score(self):
        #"""将最高得分转换为渲染的图像"""
        high_score = round(self.stats.high_score, -1)
        high_score_str = "{:,}".format(high_score)
        self.high_score_image = self.font.render(high_score_str, True,
                 self.text_color, self.settings.bg_color)

        # """将最高得分放在屏幕顶部中央"""
        self.high_score_rect = self.high_score_image.get_rect()
        self.high_score_rect.centerx = self.screen_rect.centerx
        self.high_score_rect.top = self.score_rect.top