save project

snake.py

@@ -13,9 +13,13 @@ 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')
 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:
@@ -24,13 +28,24 @@ 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'   
+                setheading = 'left'
+                snake_head = left  
             if event.key == locals.K_UP and setheading != "down": 
-                setheading = 'up'   
+                setheading = 'up'
+                snake_head = up 
             if event.key == locals.K_DOWN and setheading != "up": 
-                setheading = 'down'       
-    x +=30
+                setheading = 'down'
+               snake_head = down  
+    if setheading=="right":                     
+        x +=30
+    elif setheading =="left": 
+        x -=30
+    elif setheading =="up":
+        y -=30    
+    elif :
+        y +=30     
     position.append((x,y))# 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去