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class Settings():
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"""存储《外星人入侵》的所有设置的类"""
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def __init__(self):
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"""初始化游戏的静态设置"""
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# 屏幕设置
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self.screen_width = 1200
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self.screen_height = 800
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self.bg_color = (230, 230, 230)
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# 飞船的设置
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self.ship_speed_factor = 0.3
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# 子弹设置
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self.bullet_speed_factor =1
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self.ship_limit = 3
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