save project

snake.py

@@ -25,19 +25,19 @@ while True:
             # 接收到退出事件后退出程序
             exit()
         if event.type==locals.KEYDOWN:
-            if  event.key==locals.K_RIGHT and setheading!=right:
+            if  event.key==locals.K_RIGHT and setheading!=left:
                 setheading='right'
                 snakehead=right        
 
-            if  event.key==locals.K_LEFT and setheading!=left:
+            if  event.key==locals.K_LEFT and setheading!=right:
                 setheding='left'
                 snakehead=left
         
-            if  event.key==locals.K_DOWN and setheading!=down:
+            if  event.key==locals.K_DOWN and setheading!=up:
                 setheading='down'
                 snakehead=down
                
-            if  event.key==locals.K_UP and setheading!=up:   
+            if  event.key==locals.K_UP and setheading!=down:   
                 setheading='up' 
                 snakehead=up