save project

my_game.py

@@ -27,6 +27,7 @@ rect = obstacle.get_rect()
 rect.x = 1000
 rect.y = 500 - rect.height
 road_x=0
+bg_x=0
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -60,8 +61,11 @@ while True:
     road_x-=8
     if road_x<-1000:
         road_x=0
+    bg_x-=1
+    if bg_x <-1000:
+        bg_x=0 
     # 将背景图画上去
-    screen.blit(background, (0, 0))     # 远处背景
+    screen.blit(background, (bg_x, 0))     # 远处背景
     screen.blit(road, (road_x, 500))     # 路
     screen.blit(wukong, (150, y))     # 悟空