save project

snake.py

@@ -12,8 +12,10 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left=pygame.image.load('left.png')
+up=pygame.image.load('up.png')
 x,y=240,120
-position=[(180,90),]
+position=[(180,90),(180,120)]
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -28,6 +30,15 @@ while True:
                 setheading='up'
             if event.key==locals.K_DOWN and setheading !='up':
                 setheading='down'
+                snake_head=down
+        if setheading=="right":
+            x+=30
+        elif setheading=="up":
+            y-=30
+        else:
+            y+=30
+        position.append((x,y))
+        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去