#!/usr/bin/python
import pygame,Settings
aliens = pygame.sprite.Group()
settings = Settings.AllSettings()
class AllAliens (pygame.sprite.Sprite):
'''创建外星人的类'''
def __init__ (self, settings, screen):
'''初始化外星人坐标并设置起始位置'''
super(AllAliens,self).__init__()
self.screen = screen
self.settings = settings
self.direction = 1
self.virtical_time = 0
self.screen_rect = screen.get_rect()
# 加载外星人图像,并设置其rect属性
self.image = pygame.image.load(r'./images/alien.bmp')
self.rect = self.image.get_rect()
self.rect.x = self.rect.width
self.rect.y = self.rect.height
def draw_alien(self):
'''绘制外星人'''
self.screen.blit(self.image, self.rect)
def move(self):
'''使外星人移动'''
