diff --git a/游戏结束4 b/游戏结束4
new file mode 100644
index 0000000..ebf5f3a
--- /dev/null
+++ b/游戏结束4
@@ -0,0 +1,43 @@
+class GameSta():
+    def __init__(self,ai_settings):
+        self.ai_settings=ai_settings
+        self.reset_sta()
+        self.game_active=True
+    def reset_sta(self):
+        self.ship_counts=self.ai_settings.ship_limit
+ self.ship_limit=3
+from game_sta import GameSta
+ sta=GameSta(ai_settings)
+ gf.update_aliens(ai_settings,aliens,screen,ship,bullets,sta)
+
+
+def ship_col(ai_settings, aliens, screen, ship, bullets, sta):
+    if sta.ship_counts > 0:
+        sta.ship_counts -= 1
+        aliens.empty()
+        bullets.empty()
+        creat_aliens(ai_settings, screen, aliens, ship)
+        ship.ship_center()
+        sleep(1)
+    else:
+        sta.game_active = False
+def check_aliens_bottom(ai_settings, aliens, screen, ship, bullets, sta):
+    for alien in aliens.sprites():
+        if alien.rect.bottom >= screen.get_rect().bottom:
+            ship_col(ai_settings, aliens, screen, ship, bullets, sta)
+            break
+def update_aliens(ai_settings, aliens, screen, ship, bullets, sta):
+    check_aliens_edge(ai_settings, aliens)
+    aliens.update()
+    if pygame.sprite.spritecollideany(ship, aliens):
+        ship_col(ai_settings, aliens, screen, ship, bullets, sta)
+    check_aliens_bottom(ai_settings, aliens, screen, ship, bullets, sta)
+def ship_center(self):
+    self.center = self.screen_rect.centerx
+    while True:
+        gf.check_events(ship, ai_settings, screen, bullets)
+        if sta.game_active:
+            ship.update()
+            gf.update_bullets(ai_settings, screen, ship, bullets, aliens)
+            gf.update_aliens(ai_settings, aliens, screen, ship, bullets, sta)
+        gf.update_screen(ai_settings, screen, ship, bullets, aliens)