save project

snake.py

 import pygame
 from pygame import locals
+left = pygame.image.load('left.png')
+up = pygame.image.load('up.png')
+down = pygame.image.load('down.png')
 x=240
 y=120
 position = [(180,90),(180,120),(210,120),(x,y)]
+setheading="right"
+snake_head=right
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -20,6 +25,19 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
+        elif event.type==locals.KEYDOWN:
+            if event.key == locals.K_right:
+                setheading="right"
+                snake_head=right 
+            if event.key == locals.K_left:
+                setheading="left"
+                snake_head=left 
+            if event.key == locals.K_up:
+                setheading="up"
+                snake_head=up 
+            if event.key == locals.K_down:
+                setheading="down"
+                snake_head=down         
     x += 30
     position.append((x,y))
     position.pop(0)