save project

my_game.py

@@ -19,6 +19,7 @@ hero = [pygame.image.load('hero1.png'),
         pygame.image.load('hero4.png'),
         pygame.image.load('hero5.png')]
 index = 0   
+bg_x=0
 y = 400
 jumpState = "runing"
 t = 30
@@ -61,7 +62,10 @@ while True:
     # 将背景图画上去
     if road_x<=-1000:
         road_x=0
-    screen.blit(background, (0, 0))
+    if bg_x<=-1000:
+        bg_x=0
+    bg_x-=2
+    screen.blit(background, (bg_x, 0))
     road_x-=8                       # 远处背景
     screen.blit(road, (road_x, 500))     # 路
     screen.blit(wukong, (150, y))     # 悟空