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45 lines (28 loc) · 1.14 KB
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import pygame
from pygame.sprite import Sprite
class Alien(Sprite):
"""Una clase para representar un solo alien de la flota."""
def __init__(self, ai_game):
super().__init__()
self.screen = ai_game.screen
self.settings = ai_game.settings
# Cargar imagen de alien y establecer su atributo rectangular.
self.image = pygame.image.load('images/alien.bmp')
self.rect = self.image.get_rect()
#Crear cada alien cerca del borde superior derecho de la pantalla.
self.rect.x = self.rect.width
self.rect.y = self.rect.height
#Guardar la posición horizontal exacta del alien.
self.x = float(self.rect.x)
def draw_alien(self):
"""Dibujar el alien en la pantalla"""
pygame.draw.rect(self.screen, self.color, self.rect)
def update(self):
"""Mover el alien a la izquierda o derecha"""
self.x += (self.settings.alien_speed * self.settings.fleet_direction)
self.rect.x = self.x
def check_edges(self):
"""Devolver True si el alien toca un borde de la pantalla."""
screen_rect = self.screen.get_rect()
if self.rect.right >= screen_rect.right or self.rect.left <= 0:
return True