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scoreboard.py

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+import pygame.font
+from pygame.sprite import Group
+
+from man import Man
+
+class Scoreboard():
+    """创建一个分数的类"""
+
+    def __init__(self, ai_settings, screen, stats):
+        """初始化计分属性"""
+        self.screen = screen
+        self.screen_rect = screen.get_rect()
+        self.ai_settings = ai_settings
+        self.stats = stats
+        
+        # 设置分数信息的字体
+        self.text_color = (30, 30, 30)
+        self.font = pygame.font.SysFont(None, 48)
+
+        # 准备初始化分数
+        self.prep_score()
+        self.prep_high_score()
+        self.prep_level()
+        self.prep_mans()
+
+    def prep_score(self):
+        """将分数转换成渲染图象"""
+        rounded_score = int(round(self.stats.score, -1))
+        score_str = "{:,}".format(rounded_score)
+        self.score_image = self.font.render(score_str, True, self.text_color,
+            self.ai_settings.bg_color)
+            
+        # 在屏幕右上角显示分数
+        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):
+        """将最高分转换为图像"""
+        high_score = int(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.ai_settings.bg_color)
+                
+        # 将最高分居中显示在屏幕顶部
+        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):
+        """将标高转换为渲染图像"""
+        self.level_image = self.font.render(str(self.stats.level), True,
+                self.text_color, self.ai_settings.bg_color)
+        
+        # 将级别定位在分数以下
+        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_mans(self):
+        """显示还剩下多少艘船"""
+        self.mans = Group()
+        for man_number in range(self.stats.mans_left):
+            man = Man(self.ai_settings, self.screen)
+            man.rect.x = 10 + man_number * man.rect.width
+            man.rect.y = 10
+            self.mans.add(man)
+        
+    def show_score(self):
+        """在屏幕上画分数"""
+        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)
+        # 绘制人
+        self.mans.draw(self.screen)