auto save

snake.py

@@ -32,24 +32,34 @@ while True:
             if event.tey==locals.K_RIGHT and setheading!="left":
                 setheading="right"
                 snake_head=right
-        if event.tey==locals.K_LEFT and setheading!="right":
+            if event.tey==locals.K_LEFT and setheading!="right":
                 setheading="left"
                 snake_head=left
-        if event.tey==locals.K_UP and setheading!="down":
+            if event.tey==locals.K_UP and setheading!="down":
                 setheading="up"
                 snake_head=up
-        if event.tey==locals.K_DOWN and setheading!="up":
+            if event.tey==locals.K_DOWN and setheading!="up":
                 setheading="down"
                 snake_head=down
 
+
+
     # 将背景图画上去
-    x+=30
+    if setheading=="right":
+        x+=30
+    elif setheading=="left":
+        x-=30
+    elif setheading=="up":
+        y-=30
+    else:
+        y+=30
     position.append((x, y))
     position.pop(0)
     # 将贪吃蛇画上去
     screen.blit(background,(0,0))
     #screen.blit(right, (x, y))
     # 将贪吃蛇的身体画上去
+    screen.blit(snake_head,position[-1])
     for i in range(len(position)-1):
         screen.blit(body,position[1])