save project

my_game.py

@@ -64,7 +64,7 @@ while True:
         if index >= 5:
             index = 0
     # 将背景图画上去
-    shan_x -=2
+    shan_x -=20
     if shan_x <-1000:
         shan_x=0
     screen.blit(background, (shan_x, 0))     # 远处背景
@@ -83,4 +83,4 @@ while True:
     screen.blit(aa.image, (aa.rect.x, aa.rect.y)) 
     # 刷新画面
     pygame.display.update()
-    FPS.tick(60)
\ No newline at end of file
+    FPS.tick(50)
\ No newline at end of file