auto save

snake.py

 import pygame
 from pygame import locals
 import random
+
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -16,15 +17,15 @@ body = pygame.image.load('body.png')        # 身体
 left = pygame.image.load('left.png')        # 头 朝左
 up = pygame.image.load('up.png')            # 头 朝上
 down = pygame.image.load('down.png')        # 头 朝下
-my_font=pygame.font.Font('neuropol.ttf',18)
+
 x, y = 240, 120
+apple_x = 360
+apple_y = 300
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-apple_x=300
-apple_y=360
 
 setheading = "right"
 snake_head = right
-score=0
+
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -53,15 +54,15 @@ while True:
         y -= 30
     else:
         y += 30
-    position.append((x, y))
-    
-    if x == apple_x and y == apple_y:
+    if apple_x == x and apple_y == y:
         a=random.randint(0,21)
         b=random.randint(0,15)
-        apple_x=30*a
-        apple_y=30*b
+        apple_x = a*30
+        apple_y = b*30
     else:
-        position.pop(0)
+         x<0 or x>630 or y<0 or y>450
+    position.pop(0)
+    position.append((x, y))
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -72,9 +73,9 @@ while True:
 
     # 将果实画上去
     screen.blit(food, (apple_x, apple_y))
+    into='Score'+str(score)
+    text= my_font.render(info,True,(1,5,2))
     # 刷新画面
-    info="Score"+str(score)
-    text=my_font.render(info,True,(0,0,0))
-    screen.blit(text,(540,10))
     pygame.display.update()
-    FPSCLOCK.tick(3)
\ No newline at end of file
+    FPSCLOCK.tick(3)
+