diff --git a/alien_invasion.py b/alien_invasion.py
new file mode 100644
index 0000000..0e8b078
--- /dev/null
+++ b/alien_invasion.py
@@ -0,0 +1,230 @@
+import random
+import sys
+import time
+
+import pygame
+import event as E
+from settings import Settings
+from ship import Ship
+from background import BackGround
+from alien import Rock, Alien1, Alien2, Alien3
+from explode import Explode, Explode1
+from stats import Stats
+from explode import Explode2
+from power import Prop
+
+
+class AlienInvasion:
+    def __init__(self):
+        # 初始化
+        pygame.init()
+        pygame.mixer.init()
+        # 设置对象
+        self.settings = Settings(self)
+        # 屏幕对象
+        self.screen = pygame.display.set_mode((self.settings.screen_width, self.settings.screen_height))
+        self.screen_rect = self.screen.get_rect()
+        pygame.display.set_caption("AlienInvasion")
+        # 飞船精灵
+        self.ship = Ship(self)
+        self.ships = self.settings.ships
+        self.ships.add(self.ship)
+        # boss
+        self.boss = Alien3(self)
+        # 子弹精灵
+        self.bullets = self.settings.bullets
+        # 外星人精灵
+        self.aliens = self.settings.aliens
+        self.boss_aliens = self.settings.boss_aliens
+        # 敌人子弹精灵
+        self.enemy_bullets = self.settings.enemy_bullets
+        self.boss_bullets = self.settings.boss_bullets
+        # 背景精灵
+        self.background = BackGround(self)
+        self.background1 = BackGround(self)
+        self.background1.rect.bottom = self.background.rect.top
+        self.backgrounds = self.settings.backgrounds
+        self.backgrounds.add(self.background, self.background1)
+        # 炸弹精灵
+        self.explodes = self.settings.explodes
+        # 道具类
+        self.props = self.settings.props
+        # 统计对象
+        self.stats = Stats(self)  # 用于管理分数  需要传入ship，所以要写在ship创建后的后面
+
+        # 事件触发
+        self.flag1 = 0
+        self.flag1_time = pygame.time.get_ticks()
+        self.flag2 = 0
+        self.flag2_time = pygame.time.get_ticks()
+        self.flag3 = 0
+        self.flag3_time = pygame.time.get_ticks()
+        self.flag4 = 0
+        self.flag4_time = pygame.time.get_ticks()
+        self.init_time = pygame.time.get_ticks()
+        self.now_time = pygame.time.get_ticks()
+        # 出怪数量
+        self.number_of_enemy = 2
+
+    def run_game(self):
+        while True:
+            # 设置刷新率
+            self.settings.clock.tick(self.settings.clock_fps)
+            # 检测事件
+            self._check_events()
+            # 检测碰撞
+            self._check_collide()
+            # 游戏更新
+            self._update_sprites()
+            # 屏幕更新
+            self._update_screen()
+
+    def _check_events(self):
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT or (event.type == pygame.KEYDOWN and event.key == pygame.K_q):
+                sys.exit()
+            if event.type == E.CREATE_ENEMY:
+                for i in range(2):
+                    rock = Rock(self)
+                    self.aliens.add(rock)
+            self._create_enemy()    # 生成外星人事件
+
+    def _create_enemy(self):
+        self.now_time = pygame.time.get_ticks()
+        if self.now_time - self.init_time > 10000:  # 触发事件，当游戏时间超过10s后，没过3s出现一次一级飞船
+            if self.flag1 == 0:
+                self.flag1_time = self.now_time
+                self.flag1 = 1
+            if self.now_time - self.flag1_time > 3000 and self.flag1 == 1:
+                self.flag1_time = self.now_time
+                for i in range(self.number_of_enemy):
+                    alien = Alien1(self)
+                    self.aliens.add(alien)
+
+        if self.now_time - self.init_time > 15000:  # 当游戏时间超过10s后，每隔4s出现一次ufo
+            if self.flag2 == 0:
+                self.flag2_time = self.now_time
+                self.flag2 = 1
+            if self.now_time - self.flag2_time > 4000 and self.flag2 == 1:
+                self.flag2_time = self.now_time
+                for i in range(self.number_of_enemy):
+                    alien = Alien2(self)
+                    self.aliens.add(alien)
+
+        if self.now_time - self.init_time > 60000:  # 当游戏时间超过60s后，出现boss
+            if self.flag3 == 0:
+                self.boss_aliens.add(self.boss)
+                self.flag3 = 1
+            if self.flag3 == 1:  # boss一出现，其它的外星人就不会出现
+                self.flag1 = 2
+                self.flag2 = 2
+                self.flag3 = 2
+        if 30000 >= self.now_time - self.init_time > 20000:
+            self.number_of_enemy = 3
+        elif 35000 < self.now_time - self.init_time < 40000:
+            self.number_of_enemy = 4
+
+    def _check_collide(self):
+        # 敌人与我方子弹碰撞
+        collisions = pygame.sprite.groupcollide(self.aliens, self.bullets, True, True)
+        for alien in collisions:
+            self.stats.score += int(alien.radius / 8)
+            explode = Explode(self)
+            explode.rect.center = alien.rect.center
+            self.explodes.add(explode)
+            if random.random() > 0.95:
+                prop = Prop(self)
+                prop.rect.center = alien.rect.center
+                self.props.add(prop)
+
+        # boss和我方子弹
+        if self.boss.alive and self.boss.rect.top > 0:
+            collisions = pygame.sprite.spritecollide(self.boss, self.bullets, True)
+            for hit in collisions:
+                explode = Explode(self)
+                explode.rect.center = hit.rect.center
+                if self.boss.hp >= 0:
+                    self.boss.hp -= 1
+                elif self.boss.hp < 0:
+                    self.boss.alive = 0
+                    self.boss.kill()
+
+        # 敌人子弹和飞船碰撞
+        if self.ship.alive:
+            collisions = pygame.sprite.spritecollide(self.ship, self.enemy_bullets, True)
+            for hit in collisions:
+                explode = Explode2(self)
+                self.explodes.add(explode)
+                if self.ship.hp >= 0:
+                    self.ship.hp -= 5
+                elif self.ship.hp < 0:
+                    self.ship.alive = 0
+                    self.ship.kill()
+
+        # boss子弹和飞船碰撞
+        if self.ship.alive:
+            collisions = pygame.sprite.spritecollide(self.ship, self.boss_bullets, True)
+            for hit in collisions:
+                explode = Explode2(self)
+                self.explodes.add(explode)
+                if self.ship.hp > 0:
+                    self.ship.hp -= 20
+                elif self.ship.hp < 0:
+                    self.ship.alive = 0
+                    self.ship.kill()
+
+        # 敌人与飞机的碰撞
+        if self.ship.alive:
+            ship_collision = pygame.sprite.spritecollide(self.ship, self.aliens, True, pygame.sprite.collide_circle)
+            for enemy in ship_collision:
+                self.ship.hp -= (enemy.radius / 2)
+                explode1 = Explode(self)
+                explode1.rect.center = enemy.rect.center
+                explode = Explode2(self)
+                self.explodes.add(explode, explode1)
+                if self.ship.hp <= 0:
+                    self.ship.alive = 0
+                    explode1 = Explode1(self)
+                    explode1.rect = self.ship.rect
+                    self.explodes.add(explode1)
+                    self.ship.kill()
+
+        # 宝物碰撞
+        if self.ship.alive:
+            prop_collision = pygame.sprite.spritecollide(self.ship, self.props, True)
+            for prop in prop_collision:
+                if prop.type == 'shield':
+                    self.ship.hp += 10
+                    sound = pygame.mixer.Sound('resource/Bonus/sfx_shieldUp.ogg')
+                    sound.set_volume(0.3)
+                    sound.play()
+                    if self.ship.hp > 100:
+                        self.ship.hp = 100
+                elif prop.type == 'bolt':
+                    self.ship.grade_up()
+
+        if self.ship.alive == 0:
+            self._game_over()
+
+    def _update_sprites(self):
+        for group in [self.backgrounds, self.ships, self.bullets, self.aliens, self.boss_aliens,
+                      self.enemy_bullets, self.boss_bullets, self.explodes, self.props]:
+            group.update()
+
+    def _update_screen(self):
+        for group in [self.backgrounds, self.ships, self.bullets, self.aliens, self.boss_aliens,
+                      self.enemy_bullets, self.boss_bullets, self.explodes, self.props]:
+            group.draw(self.screen)
+        self.stats.update()  # 更新统计
+        # print(self.explodes)
+        pygame.display.update()
+        # print(self.enemy_bullets)
+
+    def _game_over(self):
+        # print("game over")
+        pass
+
+
+if __name__ == '__main__':
+    ai = AlienInvasion()
+    ai.run_game()