<gh_stars>0
class Settings():
	def __init__(self):
		self.screen_width = 1200
		self.screen_height = 800
		self.bg_color = (230, 230, 230)
		self.ship_speed_factor = 1.5

		#子弹设置
		self.bullet_speed_factor = 1
		self.bullet_width = 3
		self.bullet_height = 15
		self.bullet_color = 60, 60, 60