save project

snake.py

@@ -28,20 +28,20 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
-        if event.type==locals.KEYDOWN:
+
+        elif event.type==locals.KEYDOWN:
             if event.key==locals.K_RIGHT and setheading !="left":
                 setheading = 'right'
-            snake_head = 'right'
+                snake_head = right
             if event.key==locals.K_LEFT and setheading !="right":
                 setheading = 'left'
-            snake_head = 'left'
+                snake_head = left
             if event.key==locals.K_DOWN and setheading !="down":
                 setheading = 'up'
-            snake_head = 'up'
+                snake_head = up
             if event.key==locals.K_UP and setheading !="up":
                 setheading = 'down'
-            snake_head = 'down'
-
+                snake_head = down
 
     if setheading=="right":
         x+=30
@@ -56,9 +56,14 @@ while True:
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
+
     screen.blit(snake_head,position[-1])
+
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
     # 将贪吃蛇画上去
     screen.blit(right, position[-1])
+
     for i in range(len(position)-1):
         screen.blit(body,position[i])