save project

my_game.py

@@ -26,6 +26,7 @@ obstacle=random.choice([bush,stone,cacti])
 rect=obstacle.get_rect()
 rect.x=1000
 rect.y=500-rect.height
+road_x=0
 
 
 
@@ -64,11 +65,14 @@ while True:
         rect.x=1000
         rect.y=500-rect.height
     rect.x-=8
+    road_x-=8
+    if road_x<-1000:
+        road_x=0
     
     
     # 将背景图画上去
     screen.blit(background, (0, 0))
-    screen.blit(road, (0, 500))
+    screen.blit(road, (road_x, 500))
     screen.blit(wukong, (150, y))
     screen.blit(obstacle,(rect.x,rect.y))