class Settings():
	"""外星人所有的设置的类"""
	def __init__(self):
		self.screen_width = 1200
		self.screen_height = 800
		self.bg_color = (230, 230, 230)
		# 飞船的设置
		self.ship_limit = 3
		# 子弹设置
		self.bullet_width = 3
		self.bullet_height = 15
		self.bullet_color = (60, 60, 60)
		self.bullet_allowed = 10
		# 外星人设置
		self.fleet_drop_speed = 10
		self.speedup_scale = 1.1
		self.score_scale = 1.5
		# 历史最高分
		self.high_score_file = "high_score.json"
		# 背景音乐
		self.bg_music = 'bg.mp3'
		self.initialize_dynamic_settings()

	def initialize_dynamic_settings(self):
		self.ship_speed_factor = 1.5
		self.bullet_speed_factor = 3
		self.alien_speed_factor = 1
		# 1向右移动 -1向左移动
		self.fleet_direction = 1
		# 计分
		self.alien_points = 50

	def increase_speed(self):
		self.ship_speed_factor *= self.speedup_scale
		self.bullet_speed_factor *= self.speedup_scale
		self.alien_speed_factor *= self.speedup_scale
		self.alien_points = int(self.alien_points * self.score_scale) 




		