scoreboard.py

import pygame.font

from pygame.sprite import Group
from ship import Ship

class Scoreboard:
    """显示得分信息
    """
    def __init__(self, ai_game):
        """初始化显示信息属性"""
        self.ai_game = ai_game
        self.screen = ai_game.screen
        self.screen_rect = ai_game.screen.get_rect()
        self.settings = ai_game.settings
        self.stats = ai_game.stats

        # 得分信息字体属性设置
        self.text_color = (33, 33, 33)
        self.font = pygame.font.SysFont(None, 48)
        # 初始化图像
        self.prep_score()
        self.prep_level()
        self.prep_ships()
        self.prep_high_score()

    def prep_score(self):
        """渲染得分数据为图像
        """
        rounded_score = round(self.stats.score, -1)
        score_str = "{:,}".format(rounded_score)
        self.score_image = self.font.render(score_str, 
                                            True, 
                                            self.text_color, 
                                            self.settings.bg_color)

        # 将代码显示到屏幕右上角
        self.score_rect = self.score_image.get_rect()
        self.score_rect.right = self.screen_rect.right - 20
        self.score_rect.top = 20

    def prep_high_score(self):
        """渲染最高得分为图像
        """
        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)

        # 将代码显示到屏幕右上角
        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

    def prep_level(self):
        """渲染等级的图像
        """
        self.level_str = str(self.stats.level)
        self.level_image = self.font.render(self.level_str,
                                             True,
                                             self.text_color,
                                             self.settings.bg_color)
        
        self.level_rect = self.level_image.get_rect()
        self.level_rect.right = self.score_rect.right
        self.level_rect.top = self.score_rect.bottom + 10

    def prep_ships(self):
        """显示剩余飞船数量
        """
        self.ships = Group()
        for ship_number in range(self.stats.ships_left):
            ship = Ship(self.ai_game)
            ship.rect.x = 10 + ship_number * ship.rect.width
            ship.rect.y = 10
            self.ships.add(ship)

    def show_score(self):
        """显示得分数据
        """
        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 check_high_score(self):
        """检查更新最高得分
        """
        if self.stats.score > self.stats.high_score:
            self.stats.high_score = self.stats.score
            self.prep_high_score()