auto save

snake.py

@@ -17,30 +17,30 @@ food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 a = [(180,90),(180,120),(210,120),(x,y)]
 head = right
-w = "right"
+setheading = "right"
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 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 w != "left":
+            if event.key == locals.K_RIGHT and setheading != "left":
                 head = right
-                w = "right"
-            if event.key == locals.K_LEFT and w != "right":
+                setheading = "right"
+            if event.key == locals.K_LEFT and setheading != "right":
                 head = left
-                w = "left"
-            if event.key == locals.K_UP and w != "down":
+                setheading = "left"
+            if event.key == locals.K_UP and setheading != "down":
                 head = up
-                w = "up"
-            if event.key == locals.K_DOWN and w != "up":
+                setheading = "up"
+            if event.key == locals.K_DOWN and setheading != "up":
                 head = down
-                w = "down"
-    if w == "right":
+                setheading = "down"
+    if setheading == "right":
         x += 30
-    elif w == "left":
+    elif setheading == "left":
         x -= 30
-    elif w == "up":
+    elif setheading == "up":
         y -= 30
     else:
         y +=30