pytho自带飞机大战python_pygame.zip

import sys import pygame from bullet import Bullet from time import sleep from alien import Alien def check_keydown_events(event,ai_settings,screen,ship,bullets): """响应按键""" 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) #添加一个结束游戏的快捷键 elif event.key == pygame.K_q: sys.exit() def check_keyup_events(event,ship): """响应松开""" if event.key == pygame.K_RIGHT: ship.moving_right = False elif event.key == pygame.K_LEFT: ship.moving_left = False def check_events(ai_settings,screen,ship,bullets): """响应按键和鼠标事件""" for event in pygame.event.get(): if event.type == 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) def update_screen(ai_setting,screen,ship,aliens,bullets): """更新屏幕上的图像，并切换到新屏幕""" #每次循环时都重新绘制 screen.fill(ai_setting.bg_color) #在飞船和外星人后面重绘所有子弹 for bullet in bullets.sprites(): bullet.draw_bullet() ship.blitme() aliens.draw(screen) #让最新绘制的屏幕可见 pygame.display.flip() def update_bullets(bullets): """更新子弹的位置，并删除已消失的子弹""" #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) def fire_bullet(ai_settings,screen,ship,bullets): """如果还没有达到限制，就发射一颗子弹""" ##创建一颗子弹，并将其加入到标注bullets中 if len(bullets) < ai_settings.bullets_allowed: new_bullet = Bullet(ai_settings,screen,ship) bullets.add(new_bullet) def create_fleet(ai_settings,screen,aliens): """创建外星人群""" #创建一个外星人，并计算一行可容纳多少个外星人 #外星人间距外星人宽度 alien = Alien(ai_settings,screen) alien_width = alien.rect.width available_space_x = ai_settings.screen_width - 2*alien_width number_aliens_x = int(available_space_x / (2*alien_width)) #创建第一行外星人 for alien_number in range(number_aliens_x): #创建一个外星人并将其加入前行 alien = Alien(ai_settings,screen) alien.x = alien_width + 2 * alien_width *alien_number alien.rect.x = alien.x aliens.add(alien)