python之外星人入侵完整版程序源码

import sys from time import sleep from alien import Alien import pygame from bullet import Bullet def update_bullets(ai_settings,screen,ship,aliens,bullets,stats,sb): """更新子弹的位置""" bullets.update() #删除已消失的子弹 for bullet in bullets.copy(): if bullet.rect.bottom<=0: bullets.remove(bullet) #print(len(bullets)) check_bullet_alien_collisions(ai_settings,screen,ship,aliens,bullets, stats,sb) def check_bullet_alien_collisions(ai_settings,screen,ship,aliens,bullets, stats,sb): #检查是否有子弹击中外星人 #如果是这样，就删除相应的子弹和外星人 collisions=pygame.sprite.groupcollide(bullets,aliens,True,True) if collisions: for aliens in collisions.values(): stats.score+=ai_settings.alien_points*len(aliens) sb.prep_score() check_high_score(stats,sb) if len(aliens)==0: #删除现有的子弹并新建一群外星人 bullets.empty() ai_settings.increase_speed() #提高等级 stats.level+=1 sb.prep_level() create_fleet(ai_settings,screen,ship,aliens) def fire_bullet(ai_settings,screen,ship,bullets): if len(bullets)<ai_settings.bullets_allowed: #创建一颗子弹，并将其加入到编组bullets中 new_bullet=Bullet(ai_settings,screen,ship) bullets.add(new_bullet) def check_high_score(stats,sb): """检查是否诞生了新的最高分""" if stats.score>stats.high_score: stats.high_score=stats.score sb.prep_high_score() def check_keydown_events(event,ai_settings,screen,ship,bullets): if event.key==pygame.K_RIGHT: ship.moving_right=True elif event.key==pygame.K_LEFT: ship.moving_left=True elif event.key==pygame.K_SPACE: fire_bullet(ai_settings,screen,ship,bullets) elif event.key==pygame.K_q: pygame.quit(); sys.exit() def check_keyup_events(event,ship): if event.key==pygame.K_RIGHT: ship.moving_right=False elif event.key==pygame.K_LEFT: ship.moving_left=False def check_play_button(ai_settings,screen,stats,play_button,ship, aliens,bullets,mouse_x,mouse_y,sb): """在玩家单击Play按钮是开始新的游戏""" #print(stats.game_active) button_clicked=play_button.rect.collidepoint(mouse_x,mouse_y) #print("b") if button_clicked and not stats.game_active: #重置游戏设置 ai_settings.initialize_dynamic_settings() #隐藏光标 pygame.mouse.set_visible(False) #print("c") stats.game_active=True if play_button.rect.collidepoint(mouse_x,mouse_y): #重置游戏统计信息 stats.reset_stats() stats.game_active=True #重置记分牌图像 sb.prep_score() sb.prep_high_score() sb.prep_level() sb.prep_ships() #清空外星人列表和子弹列表 aliens.empty() bullets.empty() #创建一群新的外星人，并让飞船居中 create_fleet(ai_settings,screen ,ship,aliens) ship.center_ship() def check_events(ai_settings,screen,stats,play_button,ship,aliens,bullets,sb): """响应按键和鼠标事件""" for event in pygame.event.get(): if event.type==pygame.QUIT: pygame.quit(); sys.exit() elif event.type==pygame.KEYDOWN: check_keydown_events(event,ai_settings,screen,ship,bullets) elif event.type==pygame.KEYUP: check_keyup_events(event,ship) #print("keyup") elif event.type==pygame.MOUSEBUTTONDOWN: mouse_x,mouse_y=pygame.mouse.get_pos() check_play_button(ai_settings,screen,stats,play_button,ship, aliens,bullets,mouse_x,mouse_y,sb) #print("a") def update_screen(ai_settings,stats,screen,ship,aliens, bullets,play_button,sb): """更新屏幕上的图像，并切换到新屏幕""" #每次循环时都重绘屏幕 screen.fill(ai_settings.bg_color) #在飞船和外星人后面绘制所有子弹 for bullet in bullets.sprites(): bullet.draw_bullet() ship.blitme() aliens.draw(screen) #显示得分 sb.show_score() #如果游戏处于非活跃状态，就绘制Play按钮 if not stats.game_active: play_button.draw_button() #让最近重绘的屏幕可见 pygame.display.flip() def get_number_aliens_x(ai_settings,alien_width): """计算每行可以容纳多少个外星人""" available_space_x=ai_settings.screen_width-2*alien_width number_aliens_x=int(available_space_x/(2*alien_width)) return number_aliens_x def get_number_rows(ai_settings,ship_height,alien_height): """计算屏幕可容纳多少行外星人""" available_space_y=ai_settings.screen_height-3*alien_height-ship_height number_rows=int(available_space_y/(2*alien_height)) return number_rows def create_alien(ai_settings,screen,aliens,alien_number,row_number): """创建一个外星人并将其放在当前行""" alien=Alien(ai_settings,screen) alien_width=alien.rect.width alien.x=alien_width+2*alien_width*alien_number alien.rect.x=alien.x alien.rect.y=alien.rect.height+2*alien.rect.height*row_number aliens.add(alien) def create_fleet(ai_settings,screen,ship,aliens): """创建外星人群""" #创建一个外星人，并计算一行可以容纳多少外星人 #外星人间距为外星人宽度 alien=Alien(ai_settings,screen) number_aliens_x=get_number_aliens_x(ai_settings,alien.rect.width) number_rows=get_number_rows(ai_settings,ship.rect.height,alien.rect.height) #创建外星人群 for row_number in range(number_rows): for alien_number in range(number_aliens_x): create_alien(ai_settings,screen,aliens,alien_number,row_number) def ship_hit(ai_settings,stats,screen,ship,aliens,bullets,sb): """响应被外星人撞到的飞船""" if stats.ships_left>0: #将ships_left减一 stats.ships_left-=1 #更新记分牌 sb.prep_ships() #清空外星人列表和子弹列表 aliens.empty() bullets.empty() #创建一群新的外星人，并将飞船放到屏幕底部中央 create_fleet(ai_settings,screen,ship,aliens) ship.center_ship() #暂停 sleep(0.5) else: stats.game_active=False pygame.mouse.set_visible(True) def update_aliens(ai_settings,stats,screen,ship,aliens,bullets,sb): """检查是否有外星人到达屏幕边缘，并 更新外星人群中所有外星人的位置""" check_fleet_edges(ai_settings,aliens) aliens.update() #检测外星人和飞船之间的碰撞 if pygame.sprite.spritecollideany(ship,aliens): #print ("Ship hit!") ship_hit(ai_settings,stats,screen,ship,aliens,bullets,sb) #检查是否有外星人到达屏幕底端 check_aliens_bottom(ai_settings,stats,screen,ship,aliens,bullets,sb) def check_fleet_edges(ai_settings,aliens): """有外星人到达边缘时采取相应的措施""" for alien in aliens.sprites(): if alien.check_edges(): change_fleet_direction(ai_settings,aliens) break def change_fleet_direction(ai_settings,aliens): """将整群外星人下一，并改变他�