save project

my_game.py

@@ -27,6 +27,9 @@ rect = obstacle.get_rect()
 rect.x = 1000
 rect.y = 500 - rect.height
 
+bg_x = 0
+road_x = 0
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -68,6 +71,17 @@ while True:
         rect = obstacle.get_rect()
         rect.x = 1000
         rect.y = 500 - rect.height
+
+    bg_x -= 1
+    if bg_x<=-1000:
+        bg_x = 0
+    screen.blit(background, (bg_x, 0))
+    road_x -= 8
+    
+    if road_x<=-1000:
+        road_x = 0
+    screen.blit(road, (road_x, 500))
+    
     rect.x -= 8
     screen.blit(obstacle, (rect.x, rect.y)) 
     # 刷新画面