alien_invasion.py
import sys import pygame from settings import Settings from ship import Ship from pygame.sprite import Group import game_functions as gf #as是别名 def run_game(): #初始化游戏 pygame.init()#这个是pygame的初始化 pygame.display.set_caption("飞机大战") ai_settings = Settings() #创建屏幕对象 screen = pygame.display.set_mode([ai_settings.screen_width,ai_settings.screen_height]) #创建一艘飞船 ship = Ship(ai_settings,screen) #创建子弹编组 bullets = Group() #游戏的主循环 while True: #监听键盘鼠标事件 #gf.check_events(ship) gf.check_events(ai_settings,screen,ship,bullets) ship.update() bullets.update() gf.update_screen(ai_settings,screen,ship,bullets) run_game() import pygame from pygame.sprite import Sprite class Bullet(Sprite): """对子弹进行管理的类""" def __init__(self,ai_settings,screen,ship): super(Bullet,self).__init__() self.screen = screen #设置子弹大小 self.rect = pygame.Rect(0,0,ai_settings.bullet_width,ai_settings.bullet_height) self.rect.centerx = ship.rect.centerx self.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_color self.speed_factor = ai_settings.bullet_speed_factor def update(self): """向上移动子弹""" self.y -= self.speed_factor self.rect.y = self.y def draw_bullet(self): """绘制子弹""" #网站上给出的官网用法如下 #pygame.draw.rect(Surface, color, Rect, width=0): return Rect pygame.draw.rect(self.screen,self.color,self.rect)game_functions.py
import sys import pygame from bullet import Bullet def check_keydown_events(event,ai_settings,screen,ship,bullets): """响应按键""" if event.key == pygame.K_RIGHT: ship.moving_right = True if event.key == pygame.K_LEFT: ship.moving_left = True elif event.key == pygame.K_SPACE: new_bullet = Bullet(ai_settings,screen,ship) bullets.add(new_bullet) def check_keyup_events(event,ship): """响应松开按键""" if event.key == pygame.K_RIGHT: ship.moving_right = False if event.key == pygame.K_LEFT: ship.moving_left = False def check_events(ai_settings,screen,ship,bullets): """响应鼠标事件""" #监听键盘鼠标事件 for event in pygame.event.get():#键盘鼠标事件 if event.type == pygame.QUIT:#注意 == 两个等号 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_settings,screen,ship,bullets): """更新图像""" #用背景色填充屏幕 screen.fill(ai_settings.bg_color) for bullet in bullets.sprites(): bullet.draw_bullet() #将飞船的图像绘制到屏幕上 ship.blitme() #在while里面一直刷新屏幕,这一条程序放到最下面 pygame.display.flip()settings.py
class Settings(): """存储设置的类""" def __init__(self): """初始化游戏设置""" #屏幕的设置 self.screen_width = 800 self.screen_height = 600 self.bg_color = (230,230,230) #飞船的设置 self.ship_speed_factor = 0.5 #子弹的设置 self.bullet_speed_factor = 1 self.bullet_width = 3 self.bullet_height = 15 self.bullet_color = 60,60,60ship.py
import pygame from bullet import Bullet class Ship(): def __init__(self,ai_settings,screen): self.screen = screen self.ai_settings = ai_settings #加载飞船图像 self.image = pygame.image.load("images/ship.bmp") #获取飞船的属性rect self.rect = self.image.get_rect() self.screen_rect = screen.get_rect() #让游戏元素居中，设置相应rect对象的center,centerx,centery. self.rect.centerx = self.screen_rect.centerx #让游戏元素与边缘对齐，top,bottom,left,right. self.rect.bottom = self.screen_rect.bottom self.center = float(self.rect.centerx) #移动标志 self.moving_right = False self.moving_left = False #def update(self): def update(self): """根据移动标志调整飞船的位置，可以连续移动""" if self.moving_right and self.rect.right < self.screen_rect.right: self.center += self.ai_settings.ship_speed_factor if self.moving_left and self.rect.left > 0: self.center -= self.ai_settings.ship_speed_factor #根据self.center更新rect对象 self.rect.centerx = self.center def blitme(self): #将飞船的图像绘制到屏幕上 self.screen.blit(self.image,self.rect)
