auto save

snake.py

 import pygame
-
+from pygame import locals
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
 # 创建一个窗口
-??
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+a=pygame.time.Clock()
+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')
+screen = pygame.display.set_mode((660,480))
+x,y = 240,120
+p=[(180,90),(180,120),(210,120),(x,y)]
+b="right"
+
+while True:
+    for event in pygame.event.get():
+        if event.type == locals.QUIT:
+            exit()
+        if event.type == locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and b !="left":
+                b='right'
+                snake_head = right
+            if event.key==locals.K_LEFT and b != "right":
+                b='left'
+                snake_head = left
+            if event.key==locals.K_UP and b != "down":
+                b='up'
+                snake_head = up
+            if event.key==locals.K_DOWN and b != "up":
+                b='down'
+                snake_head = down
+    if b == "right":
+        x += 30
+    elif b == "left":
+        x -= 30
+    elif b == "up":
+        y -= 30
+    else:
+        y += 30       
+    p.append((x,y))
+    p.pop(0)
+    #将背景图画上去
+    screen.blit(background,(0,0))
+    screen.blit(snake_head,position[-1])
+    #将蛇头画上去
+    screen.blit(right,p[-1])
+    for i in range(len(p)-1):
+        screen.blit(body,p[i])
+    #screen.blit(body,(210,120))
+    #screen.blit(body,(180,120))
+    #将苹果画上去
+    screen.blit(food,(0,0))
+    #刷新画面
+    pygame.display.update()
+    a.tick(3)
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