save project

snake.py

@@ -18,6 +18,7 @@ body = pygame.image.load('body.png')
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
 setheading = "right"
+snake_head = right 
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -26,12 +27,16 @@ while True:
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_RIGHT and setheading !="left":
                 setheading = 'right'
+                snake_head = right
             if event.key == locals.K_LEFT and setheading !="right":
                 setheading = 'left'
+                snake_head = left
             if event.key == locals.K_DOWN and setheading !="up":
                 setheading = 'down'
+                snake_head = down
             if event.key == locals.K_UP and setheading !="down":
                 setheading = 'up'
+                snake_head = up
     if setheading =="right":
         x += 30
     elif setheading =="left":
@@ -45,7 +50,7 @@ while True:
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right,  position[-1])
+    screen.blit(snake_head,  position[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])