save project

my_game.py

@@ -32,7 +32,8 @@ y = 400
 jumpState = "runing"
 t = 30
 aa=Block(bush,cacti,stone)
-
+background_x=0
+road_x=0
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -63,6 +64,14 @@ while True:
         index += 1
         if index >= 5:
             index = 0
+    background_x-=1
+    if background_x<=-1000
+        background_x=0
+    screen.blit(background(background_x,0))
+    road_x-=8
+    if road_x<=-1000:
+        road_x=0
+    screen.blit(road,(road_x,500))
     # 将背景图画上去
     shan_x -=2
     if shan_x <-1000: