import pygame
from  pygame.sprite import Sprite
class Alien(Sprite):
	def __init__(self,ai_settings,screen):
		super(Alien,self).__init__()
		self.screen=screen
		self.ai_settings =ai_settings
		self.image = pygame.image.load('images/alien.bmp')
		self.rect =self.image.get_rect()
		self.rect.x=self.rect.width
		self.rect.y=self.rect.height
		self.x = self.rect.x
	def blitme(self):
		self.screen.blit(self.image,self.rect)
	def check_edges(self):
		screen_rect = self.screen.get_rect()
		if self.rect.right >= screen_rect.right:
			return True
		if self.rect.left <= 0:
			return True
	def update(self):
		self.x += (self.ai_settings.alien_speed_factor*self.ai_settings.fleet_dir)
		self.rect.x=self.x
	
