alien.py

import pygame
from pygame.sprite import Sprite 

class Alien(Sprite):


	def __init__(self,ai_settings,screen):
		#initialize the alien and its starting position
		super().__init__()
		self.screen = screen
		self.ai_settings = ai_settings
		#load the alien image and set its rect attribute
		self.image = pygame.image.load("/home/foreign/Python/images/alien.bmp")
		self.rect = self.image.get_rect()
		#start each new alien near the top left of the screen
		self.rect.x = self.rect.width
		self.rect.y = self.rect.height
		#store the alien exact position
		self.x = float(self.rect.x)




	def blitme(self):
		#draw the alien at its current location
		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
		elif self.rect.left<=0:
			return True

	def update(self):
		self.x += (self.ai_settings.alien_speed_factor * self.ai_settings.fleet_direction)
		self.rect.x = self.x