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alien.py
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alien.py
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import pygame
from pygame.sprite import Sprite
class Alien(Sprite):
def __init__(self, ai_game):
super().__init__()
self.screen = ai_game.screen
self.settings = ai_game.settings
#load image
self.image = pygame.image.load('images/alien.bmp')
self.rect = self.image.get_rect()
#self.image = pygame.transform.scale(self.image, (110, 110))
# Start each alien near the top left of the screen
self.rect.x = self.rect.width
self.rect.y = self.rect.height
# store the alien's exact horizontal position
self.x = float(self.rect.x)
def check_edges(self):
screen_rect = self.screen.get_rect()
return (self.rect.right >= screen_rect.right) or (self.rect.left <= 0)
def update(self):
#self.x += self.settings.alien_speed
self.x += self.settings.alien_speed * self.settings.fleet_direction
self.rect.x = self.x