python外星人入侵，武装飞船，代码写好后，不显示子弹

Question

按照书上写的武装飞船，写到能够左右移动了，但到了射击（装子弹）时候，按照书上的代码照搬了，运行时没显示代码有问题，但就是按了空格键，不见有子弹，其他都正常。代码：alien_invasion.pyimportsysimportpygamefrompygame.spriteimportGroupfromsettingsimportSettingsfromshipimportShipimportgame_functionsasgfdefrun_game():#初始化pygame、设置和屏幕对象pygame.init()ai_settings=Settings()screen=pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))pygame.display.set_caption("AlienInvasion")#创建一艘飞船ship=Ship(ai_settings,screen)#创建一个用于存储子弹的编组bullets=Group()#开始游戏主循环whileTrue:gf.check_events(ai_settings,screen,ship,bullets)ship.update()bullets.update()gf.update_screen(ai_settings,screen,ship,bullets)run_game()**game_functions.py**importsysimportpygamefrombulletimportBulletdefcheck_keydown_events(event,ai_settings,screen,ship,bullets):"""响应按键"""ifevent.key==pygame.K_RIGHT:ship.moving_right=Trueelifevent.key==pygame.K_LEFT:ship.moving_left=Trueelifevent.key==pygame.K_SPACE:#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)defcheck_keyup_events(event,ship):"""响应松开"""ifevent.key==pygame.K_RIGHT:ship.moving_right=Falseelifevent.key==pygame.K_LEFT:ship.moving_left=Falsedefcheck_events(ai_settings,screen,ship,bullets):"""响应按键和鼠标事件"""foreventinpygame.event.get():ifevent.type==pygame.QUIT:sys.exit()elifevent.type==pygame.KEYDOWN:check_keydown_events(event,ai_settings,screen,ship,bullets)elifevent.type==pygame.KEYUP:check_keyup_events(event,ship)defupdate_screen(ai_settings,screen,ship,bullets):"""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)ship.blitme()#让最近绘制的屏幕可见pygame.display.flip()#在飞船和外星人后面重绘所有子弹forbulletinbullets.sprites():bullet.draw_bullet()**bullet.py**importpygamefrompygame.spriteimportSpriteclassBullet(Sprite):"""一个对飞船发射的子弹进行管理的类"""def__init__(self,ai_settings,screen,ship):"""在飞船所处的位置创建一个子弹对象"""super(Bullet,self).__init__()self.screen=screen#在(0,0)处创建一个表示子弹的举行，再设置正确的位置self.rect=pygame.Rect(0,0,ai_settings.bullet_width,ai_settings.bullet_height)self.rect.centerx=ship.rect.centerxself.rect.top=ship.rect.top#存储用小数表示的子弹位置self.y=float(self.rect.y)self.color=ai_settings.bullet_colorself.speed_factor=ai_settings.bullet_speed_factordefupdate(self):"""向上移动子弹"""#更新表示子弹位置的小数值self.y-=self.speed_factor#更新表示子弹的rect的位置self.rect.y=self.ydefdraw_bullet(self):"""在屏幕上绘制子弹"""pygame.draw.rect(self.screen,self.color,self.rect)settings.pyclassSettings():"""存储《外星人入侵》的所有设置的类"""def__init__(self):"""初始化游戏的设置"""#屏幕设置self.screen_width=1200self.screen_height=800self.bg_color=(230,230,230)#飞船的设置self.ship_speed_factor=1.5#子弹设置self.bullet_speed_factor=1self.bullet_width=3self.bullet_height=15self.bullet_color=60,60,60ship.pyimportpygameclassShip():def__init__(self,ai_settings,screen):"""初始化飞船并设置其初始位置"""self.screen=screenself.ai_settings=ai_settings#加载飞船图像并获取其外接矩形self.image=pygame.image.load('images/ship.bmp')self.rect=self.image.get_rect()self.screen_rect=screen.get_rect()#将每艘新飞船放在屏幕底部中央self.rect.centerx=self.screen_rect.centerxself.rect.bottom=self.screen_rect.bottom#在飞船的属性center中存储小数值self.center=float(self.rect.centerx)#移动标志self.moving_right=Falseself.moving_left=Falsedefupdate(self):"""根据移动标志调整飞船的位置"""#更新飞船的center值，而不是rectifself.moving_rightandself.rect.right0:self.center-=self.ai_settings.ship_speed_factor#根据self.center更新rect对象self.rect.centerx=self.centerdefblitme(self):"""在指定位置绘制飞船"""self.screen.blit(self.image,self.rect)

Answer 1

楼主你好，请问你的问题解决了了吗，我遇到了和你一模一样的问题