diff --git "a/Aircraft Wars/hm_01_pygame\345\205\245\351\227\250.py" "b/Aircraft Wars/hm_01_pygame\345\205\245\351\227\250.py"
new file mode 100644
index 0000000..3fb4a70
--- /dev/null
+++ "b/Aircraft Wars/hm_01_pygame\345\205\245\351\227\250.py"	
@@ -0,0 +1,8 @@
+import pygame
+
+pygame.init()
+
+# 编写游戏的代码
+print("游戏的代码...")
+
+pygame.quit()
\ No newline at end of file
diff --git "a/Aircraft Wars/hm_02_\344\275\277\347\224\250Rect\346\217\217\350\277\260\350\213\261\351\233\204.py" "b/Aircraft Wars/hm_02_\344\275\277\347\224\250Rect\346\217\217\350\277\260\350\213\261\351\233\204.py"
new file mode 100644
index 0000000..0481688
--- /dev/null
+++ "b/Aircraft Wars/hm_02_\344\275\277\347\224\250Rect\346\217\217\350\277\260\350\213\261\351\233\204.py"	
@@ -0,0 +1,7 @@
+import pygame
+
+hero_rect = pygame.Rect(100, 500, 120, 125)
+
+print("英雄的原点 %d %d" % (hero_rect.x, hero_rect.y))
+print("英雄的尺寸 %d %d" % (hero_rect.width, hero_rect.height))
+print("%d %d" % hero_rect.size)
diff --git "a/Aircraft Wars/hm_03_\345\210\233\345\273\272\346\270\270\346\210\217\347\252\227\345\217\243.py" "b/Aircraft Wars/hm_03_\345\210\233\345\273\272\346\270\270\346\210\217\347\252\227\345\217\243.py"
new file mode 100644
index 0000000..5fd3cfe
--- /dev/null
+++ "b/Aircraft Wars/hm_03_\345\210\233\345\273\272\346\270\270\346\210\217\347\252\227\345\217\243.py"	
@@ -0,0 +1,11 @@
+import pygame
+
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+while True:
+    pass
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_04_\347\273\230\345\210\266\345\233\276\345\203\217.py" "b/Aircraft Wars/hm_04_\347\273\230\345\210\266\345\233\276\345\203\217.py"
new file mode 100644
index 0000000..fefa7f3
--- /dev/null
+++ "b/Aircraft Wars/hm_04_\347\273\230\345\210\266\345\233\276\345\203\217.py"	
@@ -0,0 +1,19 @@
+import pygame
+
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+# 1> 加载图像数据
+bg = pygame.image.load("./images/background.png")
+# 2> blit 绘制图像
+screen.blit(bg, (0, 0))
+# 3> update 更新屏幕显示
+pygame.display.update()
+
+while True:
+    pass
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_05_\347\273\230\345\210\266\350\213\261\351\233\204\345\233\276\345\203\217.py" "b/Aircraft Wars/hm_05_\347\273\230\345\210\266\350\213\261\351\233\204\345\233\276\345\203\217.py"
new file mode 100644
index 0000000..404e2a5
--- /dev/null
+++ "b/Aircraft Wars/hm_05_\347\273\230\345\210\266\350\213\261\351\233\204\345\233\276\345\203\217.py"	
@@ -0,0 +1,24 @@
+import pygame
+
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+# 1> 加载图像数据
+bg = pygame.image.load("./images/background.png")
+# 2> blit 绘制图像
+screen.blit(bg, (0, 0))
+# 3> update 更新屏幕显示
+pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+pygame.display.update()
+
+while True:
+    pass
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_06_update\346\226\271\346\263\225.py" "b/Aircraft Wars/hm_06_update\346\226\271\346\263\225.py"
new file mode 100644
index 0000000..75c763a
--- /dev/null
+++ "b/Aircraft Wars/hm_06_update\346\226\271\346\263\225.py"	
@@ -0,0 +1,23 @@
+import pygame
+
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+while True:
+    pass
+ 
+pygame.quit()
diff --git "a/Aircraft Wars/hm_07_\350\256\244\350\257\206\346\270\270\346\210\217\345\276\252\347\216\257.py" "b/Aircraft Wars/hm_07_\350\256\244\350\257\206\346\270\270\346\210\217\345\276\252\347\216\257.py"
new file mode 100644
index 0000000..f6205da
--- /dev/null
+++ "b/Aircraft Wars/hm_07_\350\256\244\350\257\206\346\270\270\346\210\217\345\276\252\347\216\257.py"	
@@ -0,0 +1,38 @@
+import pygame
+
+# 游戏的初始化
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+# 创建时钟对象
+clock = pygame.time.Clock()
+
+# 游戏循环 -> 意味着游戏的正式开始！
+i = 0
+
+while True:
+
+    # 可以指定循环体内部的代码执行的频率
+    clock.tick(1)
+
+    print(i)
+
+    i += 1
+
+    pass
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_08_\346\233\264\346\226\260\350\213\261\351\233\204\344\275\215\347\275\256.py" "b/Aircraft Wars/hm_08_\346\233\264\346\226\260\350\213\261\351\233\204\344\275\215\347\275\256.py"
new file mode 100644
index 0000000..d7b6219
--- /dev/null
+++ "b/Aircraft Wars/hm_08_\346\233\264\346\226\260\350\213\261\351\233\204\344\275\215\347\275\256.py"	
@@ -0,0 +1,43 @@
+import pygame
+
+# 游戏的初始化
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+# 创建时钟对象
+clock = pygame.time.Clock()
+
+# 1. 定义rect记录飞机的初始位置
+hero_rect = pygame.Rect(150, 300, 102, 126)
+
+# 游戏循环 -> 意味着游戏的正式开始！
+while True:
+
+    # 可以指定循环体内部的代码执行的频率
+    clock.tick(60)
+
+    # 2. 修改飞机的位置
+    hero_rect.y -= 1
+
+    # 3. 调用blit方法绘制图
+    screen.blit(bg, (0, 0))
+    screen.blit(hero, hero_rect)
+
+    # 4. 调用update方法更新显示
+    pygame.display.update()
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_09_\350\213\261\351\233\204\345\276\252\347\216\257\351\243\236\350\241\214.py" "b/Aircraft Wars/hm_09_\350\213\261\351\233\204\345\276\252\347\216\257\351\243\236\350\241\214.py"
new file mode 100644
index 0000000..42e9183
--- /dev/null
+++ "b/Aircraft Wars/hm_09_\350\213\261\351\233\204\345\276\252\347\216\257\351\243\236\350\241\214.py"	
@@ -0,0 +1,47 @@
+import pygame
+
+# 游戏的初始化
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+# 创建时钟对象
+clock = pygame.time.Clock()
+
+# 1. 定义rect记录飞机的初始位置
+hero_rect = pygame.Rect(150, 300, 102, 126)
+
+# 游戏循环 -> 意味着游戏的正式开始！
+while True:
+
+    # 可以指定循环体内部的代码执行的频率
+    clock.tick(60)
+
+    # 2. 修改飞机的位置
+    hero_rect.y -= 1
+
+    # 判断飞机的位置
+    if hero_rect.y <= -102:
+        hero_rect.y = 700
+
+    # 3. 调用blit方法绘制图
+    screen.blit(bg, (0, 0))
+    screen.blit(hero, hero_rect)
+
+    # 4. 调用update方法更新显示
+    pygame.display.update()
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_10_\344\272\213\344\273\266\347\233\221\345\220\254.py" "b/Aircraft Wars/hm_10_\344\272\213\344\273\266\347\233\221\345\220\254.py"
new file mode 100644
index 0000000..c73b075
--- /dev/null
+++ "b/Aircraft Wars/hm_10_\344\272\213\344\273\266\347\233\221\345\220\254.py"	
@@ -0,0 +1,52 @@
+import pygame
+
+# 游戏的初始化
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+# 创建时钟对象
+clock = pygame.time.Clock()
+
+# 1. 定义rect记录飞机的初始位置
+hero_rect = pygame.Rect(150, 300, 102, 126)
+
+# 游戏循环 -> 意味着游戏的正式开始！
+while True:
+
+    # 可以指定循环体内部的代码执行的频率
+    clock.tick(60)
+
+    # 捕获事件
+    event_list = pygame.event.get()
+    if len(event_list) > 0:
+        print(event_list)
+
+    # 2. 修改飞机的位置
+    hero_rect.y -= 1
+
+    # 判断飞机的位置
+    if hero_rect.y <= -102:
+        hero_rect.y = 700
+
+    # 3. 调用blit方法绘制图
+    screen.blit(bg, (0, 0))
+    screen.blit(hero, hero_rect)
+
+    # 4. 调用update方法更新显示
+    pygame.display.update()
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_11_\347\233\221\345\220\254\351\200\200\345\207\272\344\272\213\344\273\266.py" "b/Aircraft Wars/hm_11_\347\233\221\345\220\254\351\200\200\345\207\272\344\272\213\344\273\266.py"
new file mode 100644
index 0000000..727e4ad
--- /dev/null
+++ "b/Aircraft Wars/hm_11_\347\233\221\345\220\254\351\200\200\345\207\272\344\272\213\344\273\266.py"	
@@ -0,0 +1,60 @@
+import pygame
+
+# 游戏的初始化
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+# 创建时钟对象
+clock = pygame.time.Clock()
+
+# 1. 定义rect记录飞机的初始位置
+hero_rect = pygame.Rect(150, 300, 102, 126)
+
+# 游戏循环 -> 意味着游戏的正式开始！
+while True:
+
+    # 可以指定循环体内部的代码执行的频率
+    clock.tick(60)
+
+    # 监听事件
+    for event in pygame.event.get():
+
+        # 判断事件类型是否是退出事件
+        if event.type == pygame.QUIT:
+            print("游戏退出...")
+
+            # quit 卸载所有的模块
+            pygame.quit()
+
+            # exit() 直接终止当前正在执行的程序
+            exit()
+
+    # 2. 修改飞机的位置
+    hero_rect.y -= 1
+
+    # 判断飞机的位置
+    if hero_rect.y <= -102:
+        hero_rect.y = 700
+
+    # 3. 调用blit方法绘制图
+    screen.blit(bg, (0, 0))
+    screen.blit(hero, hero_rect)
+
+    # 4. 调用update方法更新显示
+    pygame.display.update()
+
+pygame.quit()
diff --git "a/Aircraft Wars/hm_12_\346\274\224\347\273\203\347\262\276\347\201\265.py" "b/Aircraft Wars/hm_12_\346\274\224\347\273\203\347\262\276\347\201\265.py"
new file mode 100644
index 0000000..4a96d27
--- /dev/null
+++ "b/Aircraft Wars/hm_12_\346\274\224\347\273\203\347\262\276\347\201\265.py"	
@@ -0,0 +1,78 @@
+import pygame
+from plane_sprites import *
+
+
+# 游戏的初始化
+pygame.init()
+
+# 创建游戏的窗口
+screen = pygame.display.set_mode((480, 700))
+
+# 绘制背景图像
+bg = pygame.image.load("./images/background.png")
+screen.blit(bg, (0, 0))
+# pygame.display.update()
+
+# 绘制英雄的飞机
+hero = pygame.image.load("./images/me1.png")
+screen.blit(hero, (150, 300))
+
+# 可以在所有绘制工作完成之后，统一调用update方法
+pygame.display.update()
+
+# 创建时钟对象
+clock = pygame.time.Clock()
+
+# 1. 定义rect记录飞机的初始位置
+hero_rect = pygame.Rect(150, 300, 102, 126)
+
+
+# 创建敌机的精灵
+enemy = GameSprite("./images/enemy1.png")
+enemy1 = GameSprite("./images/enemy1.png", 2)
+# 创建敌机的精灵组
+enemy_group = pygame.sprite.Group(enemy, enemy1)
+
+
+# 游戏循环 -> 意味着游戏的正式开始！
+while True:
+
+    # 可以指定循环体内部的代码执行的频率
+    clock.tick(60)
+
+    # 监听事件
+    for event in pygame.event.get():
+
+        # 判断事件类型是否是退出事件
+        if event.type == pygame.QUIT:
+            print("游戏退出...")
+
+            # quit 卸载所有的模块
+            pygame.quit()
+
+            # exit() 直接终止当前正在执行的程序
+            exit()
+
+    # 2. 修改飞机的位置
+    hero_rect.y -= 1
+
+    # 判断飞机的位置
+    if hero_rect.y <= -102:
+        hero_rect.y = 700
+
+    # 3. 调用blit方法绘制图
+    screen.blit(bg, (0, 0))
+    screen.blit(hero, hero_rect)
+
+    # 让精灵组调用两个方法
+    # update - 让组中的所有精灵更新位置
+    enemy_group.update()
+
+    # draw - 在screen上绘制所有的精灵
+    enemy_group.draw(screen)
+
+
+    # 4. 调用update方法更新显示
+    pygame.display.update()
+
+pygame.quit()
diff --git a/Aircraft Wars/images/again.png b/Aircraft Wars/images/again.png
new file mode 100755
index 0000000..4d9c80e
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diff --git a/Aircraft Wars/images/background.png b/Aircraft Wars/images/background.png
new file mode 100755
index 0000000..8f1c51c
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diff --git a/Aircraft Wars/images/bomb.png b/Aircraft Wars/images/bomb.png
new file mode 100755
index 0000000..d7f44fa
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diff --git a/Aircraft Wars/images/bomb_supply.png b/Aircraft Wars/images/bomb_supply.png
new file mode 100755
index 0000000..763220c
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diff --git a/Aircraft Wars/images/bullet1.png b/Aircraft Wars/images/bullet1.png
new file mode 100755
index 0000000..c3d289e
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diff --git a/Aircraft Wars/images/bullet2.png b/Aircraft Wars/images/bullet2.png
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index 0000000..1481916
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diff --git a/Aircraft Wars/images/bullet_supply.png b/Aircraft Wars/images/bullet_supply.png
new file mode 100755
index 0000000..f04be50
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diff --git a/Aircraft Wars/images/enemy1.png b/Aircraft Wars/images/enemy1.png
new file mode 100755
index 0000000..b58494c
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diff --git a/Aircraft Wars/images/enemy1_down1.png b/Aircraft Wars/images/enemy1_down1.png
new file mode 100755
index 0000000..eb143a4
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diff --git a/Aircraft Wars/images/enemy1_down2.png b/Aircraft Wars/images/enemy1_down2.png
new file mode 100755
index 0000000..d4e02d8
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diff --git a/Aircraft Wars/images/enemy1_down3.png b/Aircraft Wars/images/enemy1_down3.png
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index 0000000..5a4d5bc
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diff --git a/Aircraft Wars/images/enemy1_down4.png b/Aircraft Wars/images/enemy1_down4.png
new file mode 100755
index 0000000..8cf3b5c
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diff --git a/Aircraft Wars/images/enemy2.png b/Aircraft Wars/images/enemy2.png
new file mode 100755
index 0000000..71abebe
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diff --git a/Aircraft Wars/images/enemy2_down1.png b/Aircraft Wars/images/enemy2_down1.png
new file mode 100755
index 0000000..6128d78
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diff --git a/Aircraft Wars/images/enemy2_down2.png b/Aircraft Wars/images/enemy2_down2.png
new file mode 100755
index 0000000..07a837e
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diff --git a/Aircraft Wars/images/enemy2_down3.png b/Aircraft Wars/images/enemy2_down3.png
new file mode 100755
index 0000000..618ca36
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diff --git a/Aircraft Wars/images/enemy2_down4.png b/Aircraft Wars/images/enemy2_down4.png
new file mode 100755
index 0000000..1d04321
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diff --git a/Aircraft Wars/images/enemy2_hit.png b/Aircraft Wars/images/enemy2_hit.png
new file mode 100755
index 0000000..a119255
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diff --git a/Aircraft Wars/images/enemy3_down1.png b/Aircraft Wars/images/enemy3_down1.png
new file mode 100755
index 0000000..96e95b6
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diff --git a/Aircraft Wars/images/enemy3_down2.png b/Aircraft Wars/images/enemy3_down2.png
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diff --git a/Aircraft Wars/plane_main.py b/Aircraft Wars/plane_main.py
new file mode 100644
index 0000000..8575ff3
--- /dev/null
+++ b/Aircraft Wars/plane_main.py	
@@ -0,0 +1,127 @@
+import pygame
+from plane_sprites import *
+
+
+class PlaneGame(object):
+    """飞机大战主游戏"""
+
+    def __init__(self):
+        print("游戏初始化")
+
+        # 1. 创建游戏的窗口
+        self.screen = pygame.display.set_mode(SCREEN_RECT.size)
+        # 2. 创建游戏的时钟
+        self.clock = pygame.time.Clock()
+        # 3. 调用私有方法，精灵和精灵组的创建
+        self.__create_sprites()
+
+        # 4. 设置定时器事件 - 创建敌机  1s
+        pygame.time.set_timer(CREATE_ENEMY_EVENT, 1000)
+        pygame.time.set_timer(HERO_FIRE_EVENT, 500)
+
+    def __create_sprites(self):
+
+        # 创建背景精灵和精灵组
+        bg1 = Background()
+        bg2 = Background(True)
+
+        self.back_group = pygame.sprite.Group(bg1, bg2)
+
+        # 创建敌机的精灵组
+        self.enemy_group = pygame.sprite.Group()
+
+        # 创建英雄的精灵和精灵组
+        self.hero = Hero()
+        self.hero_group = pygame.sprite.Group(self.hero)
+
+
+    def start_game(self):
+        print("游戏开始...")
+
+        while True:
+            # 1. 设置刷新帧率
+            self.clock.tick(FRAME_PRE_SEC)
+            # 2. 事件监听
+            self.__event_handler()
+            # 3. 碰撞检测
+            self.__check_collide()
+            # 4. 更新/绘制精灵组
+            self.__update_sprites()
+            # 5. 更新显示
+            pygame.display.update()
+
+    def __event_handler(self):
+
+        for event in pygame.event.get():
+
+            # 判断是否退出游戏
+            if event.type == pygame.QUIT:
+                PlaneGame.__game_over()
+            elif event.type == CREATE_ENEMY_EVENT:
+                # print("敌机出场...")
+                # 创建敌机精灵
+                enemy = Enemy()
+
+                # 将敌机精灵添加到敌机精灵组
+                self.enemy_group.add(enemy)
+            elif event.type == HERO_FIRE_EVENT:
+                self.hero.fire()
+            # elif event.type == pygame.KEYDOWN and event.key == pygame.K_RIGHT:
+            #     print("向右移动...")
+
+        # 使用键盘提供的方法获取键盘按键
+        keys_pressed = pygame.key.get_pressed()
+        # 判断元组中对应的按键索引值 1
+        if keys_pressed[pygame.K_RIGHT]:
+            self.hero.speed = 2
+        elif keys_pressed[pygame.K_LEFT]:
+            self.hero.speed = -2
+        else:
+            self.hero.speed = 0
+
+
+    def __check_collide(self):
+
+        # 1. 子弹摧毁敌机
+        pygame.sprite.groupcollide(self.hero.bullets, self.enemy_group, True, True)
+
+        # 2. 敌机撞毁英雄
+        enemies = pygame.sprite.spritecollide(self.hero, self.enemy_group, True)
+
+        # 判断列表是否有内容
+        if len(enemies) > 0:
+
+            # 让英雄牺牲
+            self.hero.kill()
+
+            # 结束游戏
+            PlaneGame.__game_over()
+            
+    def __update_sprites(self):
+
+        self.back_group.update()
+        self.back_group.draw(self.screen)
+
+        self.enemy_group.update()
+        self.enemy_group.draw(self.screen)
+
+        self.hero_group.update()
+        self.hero_group.draw(self.screen)
+
+        self.hero.bullets.update()
+        self.hero.bullets.draw(self.screen)
+
+    @staticmethod
+    def __game_over():
+        print("游戏结束")
+
+        pygame.quit()
+        exit()
+
+if __name__ == '__main__':
+
+    # 创建游戏对象
+    game = PlaneGame()
+
+    # 启动游戏
+    game.start_game()
\ No newline at end of file
diff --git a/Aircraft Wars/plane_sprites.py b/Aircraft Wars/plane_sprites.py
new file mode 100644
index 0000000..7f23392
--- /dev/null
+++ b/Aircraft Wars/plane_sprites.py	
@@ -0,0 +1,146 @@
+import pygame
+import random
+
+# 屏幕大小的常量
+SCREEN_RECT = pygame.Rect(0, 0, 480, 700)
+# 刷新的帧率
+FRAME_PRE_SEC = 60
+# 创建敌机的定时器常量
+CREATE_ENEMY_EVENT = pygame.USEREVENT
+# 英雄发射子弹事件
+HERO_FIRE_EVENT = pygame.USEREVENT + 1
+
+
+class GameSprite(pygame.sprite.Sprite):
+    """飞机大战游戏精灵"""
+
+    def __init__(self, image_name, speed = 1):
+
+        # 调用父类的初始化方法
+        super().__init__()
+
+        #定义对象的属性
+        self.image = pygame.image.load(image_name)
+        self.rect = self.image.get_rect()
+        self.speed = speed
+
+    def update(self):
+
+        # 在屏幕的垂直方向上移动
+        self.rect.y += self.speed
+
+
+class Background(GameSprite):
+    """游戏背景精灵"""
+
+    def __init__(self, is_alt = False):
+
+        # 1. 调用父类的方法实现
+        super().__init__("./images/background.png")
+
+        # 2. 判断是否是交替图像，如果是，需要设置初始位置
+        if is_alt:
+            self.rect.y = -self.rect.height
+
+    def update(self):
+
+        # 1. 调用父类的方法实现
+        super().update()
+
+        # 2. 判断是否移出屏幕，如果移出屏幕，将图像设置到屏幕的上方
+        if self.rect.y >= SCREEN_RECT.height:
+            self.rect.y = -self.rect.height
+
+
+class Enemy(GameSprite):
+    """敌机精灵"""
+
+    def __init__(self):
+
+        # 1. 调用父类方法，创建敌机精灵，同时指定敌机图片
+        super().__init__("./images/enemy1.png")
+
+        # 2. 指定敌机的初试随机速度 1 ~ 3
+        self.speed = random.randint(1, 3)
+
+        # 3. 指定敌机的初试随机位置
+        self.rect.bottom = 0
+
+        max_x = SCREEN_RECT.w - self.rect.width
+        self.rect.x = random.randint(0, max_x)
+
+    def update(self):
+
+        # 1. 调用父类方法，保持垂直方向飞行
+        super().update()
+
+        # 2. 判断是否飞出屏幕，如果是，需要从精灵组删除敌机
+        if self.rect.y >= SCREEN_RECT.height:
+            # print("飞出屏幕，需要从精灵组删除...")
+            # kill方法可以将精灵从所有精灵组中移出，精灵就会被销毁
+            self.kill()
+
+    def __del__(self):
+        # print("敌机挂了 %s" % self.rect)
+        pass
+
+
+class Hero(GameSprite):
+    """英雄精灵"""
+
+    def __init__(self):
+
+        # 1. 调用父类方法，设置images&speed
+        super().__init__("./images/me1.png", 0)
+
+        # 2. 设置英雄的初始位置
+        self.rect.centerx = SCREEN_RECT.centerx
+        self.rect.bottom = SCREEN_RECT.bottom - 120
+
+        # 3. 创建子弹的精灵组
+        self.bullets = pygame.sprite.Group()
+
+    def update(self):
+
+        # 英雄在水平方向移动
+        self.rect.x += self.speed
+
+        # 控制英雄不能离开屏幕
+        if self.rect.x < 0:
+            self.rect.x = 0
+        elif self.rect.right > SCREEN_RECT.right:
+            self.rect.right = SCREEN_RECT.right
+
+    def fire(self):
+        print("发射子弹...")
+
+        for i in (0, 1, 2):
+            # 1. 创建子弹的精灵
+            bullet = Bullet()
+
+            # 2. 设置精灵的位置
+            bullet.rect.bottom = self.rect.y - i * 20
+            bullet.rect.centerx = self.rect.centerx
+
+            # 3. 将精灵添加到精灵组
+            self.bullets.add(bullet)
+
+class Bullet(GameSprite):
+    """子弹精灵"""
+
+    def __init__(self):
+
+        # 调用父类方法，设置子弹图片，设置初始速度
+        super().__init__("./images/bullet1.png", -2)
+
+    def update(self):
+
+        # 调用父类方法，让子弹沿垂直方向飞行
+        super().update()
+
+        # 判断子弹是否飞出屏幕
+        if self.rect.bottom < 0:
+            self.kill()
+
+    def __del__(self):
+        print("子弹被销毁...")