save project

snake.py

@@ -35,6 +35,14 @@ while True:
         if event.KEY == locals.K_RIGHT and setheading !="up":
                 setheading = 'down'
                 snake_head = down
+        if setheading == "right":
+            x += 30 
+        elif setheading == "left"
+            x -= 30
+        elif setheading == "up"
+            y += 30 
+        elif setheading == "down"
+            y -= 30           
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去