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settings.py

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+class Settings:
+    """存储游戏《外星人入侵》中所有设置的类"""
+
+    def __init__(self):
+        """初始化游戏的静态设置"""
+        # 屏幕设置
+        self.screen_width = 1200
+        self.screen_height = 800
+        self.bg_color = (230, 230, 230)
+        # 飞船设置
+        self.ship_speed = 1.5
+        self.ship_limit = 3
+        # 子弹设置
+        self.bullet_speed = 1.5
+        self.bullet_width = 1200
+        self.bullet_height = 15
+        self.bullet_color = (60, 60, 60)
+        self.bullets_allowed = 3
+        # 外星人设置
+        self.alien_speed = 1.0
+        self.fleet_drop_speed = 10
+        # fleet_direction为1表示向右移，为-1表示向左移
+        self.fleet_direction = 1
+        # 加快游戏节奏的速度
+        self.speedup_scale = 1.1
+        # 外星人分数的提高速度
+        self.score_scale = 1.5
+
+        self.initialize_dynamic_settings()
+
+    def initialize_dynamic_settings(self):
+        """初始化随游戏进行而变化的设置"""
+        self.ship_speed = 1.5
+        self.bullet_speed = 3.0
+        self.alien_speed = 1.0
+
+        # fleet_direction为1表示向右，为-1表示向左
+        self.fleet_direction = 1
+
+        #计分
+        self.alien_points = 50
+
+    def increase_speed(self):
+        """提高速度设置和外星人分数"""
+        self.ship_speed *= self.speedup_scale
+        self.bullet_speed *= self.speedup_scale
+        self.alien_speed *= self.speedup_scale
+
+        self.alien_points = int(self.alien_points * self.score_scale)
+        print(self.alien_points)