save project

snake.py

@@ -12,14 +12,38 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
-up=pygame.image.load
+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)]
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
+
             # 接收到退出事件后退出程序
             exit()
+        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_UP  and setheading != 'down':   
+                setheading = "up"
+                snake_head =  up
+            if event.key == locals.K_DOWN and setheading != 'up': 
+                setheading = "down"
+                snake_head =  down
+    if setheading  == 'right':
+        x += 30
+    elif setheading  == 'left':
+        x -= 30
+    elif setheading  == 'up':   
+        y -= 30
+    else:
+        y += 30
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
@@ -39,181 +63,3 @@ while True:
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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