save project

my_game.py

@@ -27,6 +27,7 @@ rect = obstacle.get_rect()
 rect.x = 1000
 rect.y = 500 - rect.height
 road_x=0
+background_x=0
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -58,7 +59,10 @@ while True:
         if index >= 5:
             index = 0
     # 将背景图画上去
-    screen.blit(background, (0, 0))     # 远处背景
+    background_x-=1
+    if background_x<=-1000:
+        background_x=0
+    screen.blit(background, (background_x, 0))     # 远处背景
     screen.blit(road, (0, 500))     # 路
     screen.blit(wukong, (150, y))     # 悟空
     road_x-=8