auto save

snake.py

 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
+import random
 
 
 pygame.init()
 pygame.init()
-# 初始化pygame，为使用pygame做准备
 screen=pygame.display.set_mode((660,480))
 screen=pygame.display.set_mode((660,480))
+# 初始化pygame，为使用pygame做准备 
 background=pygame.image.load("bg.png")
 background=pygame.image.load("bg.png")
 right=pygame.image.load("right.png")
 right=pygame.image.load("right.png")
+left = pygame.image.load("left.png")
+up = pygame.image.load("up.png")
+down = pygame.image.load("down.png")
+food = pygame.image.load("apple.png")
 body=pygame.image.load("body.png")
 body=pygame.image.load("body.png")
-apple=pygame.image.load("apple.png")
+FPSCLOCK = pygame.time.Clock()
+
+x,y = (240,120)
+position=[(180,90),(180,120),(210,120),(x,y)]
+setheading ="right"
+snake_head = right
 
 
 while True:
 while True:
     for event in pygame.event.get():
     for event in pygame.event.get():
         if event.type==locals.QUIT:
         if event.type==locals.QUIT:
             exit()
             exit()
         
         
+        if event.type==locals.KEYDOWN:
+            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 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 setheading == "right":                   
+        x+=30
+    if setheading == "left":                   
+        x-=30
+    if setheading == "down":                   
+        y+=30
+    if setheading == "up":                   
+        y-=30
+    
+    position.append((x,y))
+    position.pop(0)
     screen.blit(background,(0,0))
     screen.blit(background,(0,0))
-    screen.blit(right,(240,120))
-    screen.blit(body,(210,120))
-    screen.blit(body,(180,120))
-    screen.blit(body,(180,90))
-    screen.blit(apple,(90,120))
+    screen.blit(snake_head,position[-1])
+    for i in range(len(position)-1):
+        screen.blit(body,position[i])
+    
     pygame.display.update()
     pygame.display.update()
+    FPSCLOCK.tick(3)
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