save project

snake.py

@@ -13,8 +13,12 @@ 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')
+down = pygame.image.load('down.png')
 a=[(180,90),(180,120),(210,120),(x,y)]
 seatheading='right'
+snake_head=right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -24,12 +28,16 @@ while True:
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_RIGHT and seatheading !='left':
                 seatheading='right'
+                snake_head=right
             if event.key==locals.K_LEFT and seatheading !='right':
                 seatheading='left'
+                snake_head=left
             if event.key==locals.K_UP and seatheading !='down':
                 seatheading='up'
+                snake_head=up
             if event.key==locals.K_DOWN and seatheading !='up':
                 seatheading='down'
+                snake_head=down
     if seatheading =='right':
         x+=30
     if seatheading =='left':
@@ -45,7 +53,7 @@ while True:
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x,y))
+    screen.blit(snake_head, (x,y))
     # 将贪吃蛇的身体画上去
     for i in range(len(a)-1):
         screen.blit(body,a[i])