更新 'alien.py'
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alien.py
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alien.py
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@ -37,5 +37,5 @@ class Alien(Sprite):
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def update(self):
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def update(self):
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"""向左或右移动外星人"""
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"""向左或右移动外星人"""
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self.x += (self.ai_settings.alien_speed_factor *
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self.x += (self.ai_settings.alien_speed_factor *
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self.ai_settings.fleet_direction)
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self.ai_settings.fleet_direction)
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self.rect.x = self.x
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self.rect.x = self.x
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