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alien_invasion.py

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+import pygame
+from pygame.sprite import Group
+
+from settings import Settings
+from ship import Ship
+import game_functions as gf
+
+
+def run_game():
+   """初始化游戏并创建一个屏幕对象"""
+   pygame.init()
+   ai_settings = Settings()
+   screen = pygame.display.set_mode(
+      (ai_settings.screen_width, ai_settings.screen_height))
+   pygame.display.set_caption('Alien Invasion')
+
+   # 创建一个飞船的实例
+   ship = Ship(screen, ai_settings)
+   # 创建一个用于存储子弹的编组
+   bullets = Group()
+
+   while True:
+       # 创建一个监视键盘和鼠标事件的循环
+       gf.check_events(ai_settings, screen, ship, bullets)
+       ship.update()
+       gf.update_bullets(bullets)
+       # 更新屏幕
+       gf.update_screen(ai_settings, screen, ship, bullets)
+
+
+run_game()

game_functions.py

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+import sys
+
+import pygame
+
+from bullet import Bullet
+
+
+def check_keydown_events(event, ai_settings, screen, ship, bullets):
+   # 移动飞船
+   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)
+
+
+def check_keyup_events(event, ship):
+   # 停止移动飞船
+   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 fire_bullet(ai_settings, screen, ship, bullets):
+   """如果还没有达到限制，就发射一颗子弹"""
+   if len(bullets) < ai_settings.bullets_allowed:
+       # 创建一个子弹，并将其加入编组bullets
+       new_bullet = Bullet(ai_settings, screen, ship)
+       bullets.add(new_bullet)
+
+
+def update_screen(ai_settings, screen, ship, bullets):
+   """更新屏幕上的图像，并切换到新屏幕"""
+   # 用背景色填充屏幕
+   screen.fill(ai_settings.bg_color)
+   # 在飞船和外星人后面重新绘制所有的子弹
+   for bullet in bullets.sprites():
+       bullet.draw_bullet()
+
+   # 绘制飞船图形
+   ship.blitme()
+
+   # 让最近绘制的屏幕可见(刷新屏幕)
+   pygame.display.flip()
+
+
+def update_bullets(bullets):
+   """更新子弹位置，并删除已经消失的子弹"""
+   bullets.update()
+
+   # 删除子弹
+   for bullet in bullets.copy():
+       if bullet.rect.bottom <= 0:
+           bullets.remove(bullet)

l.py

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+import pygame				#导入pygame模块
+from pygame.locals import *			#导入pygame.locals模块
+import time				#导入time模块
+
+#子弹类
+class Bullet(object):
+    #构造方法，用于初始化子弹对象的属性
+    def __init__(self, screen_temp, x, y):
+        self.x = x+40						#子弹起始x坐标
+        self.y = y-20						#子弹起始y坐标
+        self.screen = screen_temp				#窗口
+        self.image = pygame.image.load("C:/work/youxi/zidan.png")	#创建一个子弹图片
+    #显示子弹图片的方法
+    def display(self):
+        self.screen.blit(self.image, (self.x, self.y))			#显示子弹图片
+    #子弹移动方法
+    def move(self):
+        self.y-=10	#子弹y坐标自减10
+     #判断子弹是否越界的方法
+    def judge(self):
+        if self.y<0:		#如果子弹的y坐标小于0
+            return True		#返回true正确
+        else:
+            return False	#返回false错误
+
+
+
+
+
+

main.py

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+print("hellow me web")