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()
@@ -20,50 +19,12 @@ down = pygame.image.load('down.png')        # 头 朝下
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
-apple_x = 360
-apple_y = 300
-
-setheading = "right"
-snake_head = right
 
 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
-
-    # 设置贪吃蛇的头部坐标
-    if setheading == "right":
-        x += 30
-    elif setheading == "left":
-        x -= 30
-    elif setheading == "up":
-        y -= 30
-    else:
-        y += 30
-    position.append((x, y))
+            exit()# 接收到退出事件后退出程序
 
-    #贪吃蛇吃苹果
-    if x == apple_x and y == apple_y:
-        num1 = random.randint(1,22)
-        num2 = random.randint(1,16)
-        apple_x = 30*num1-30
-        apple_y = 30*num2-30
-    else:
-        position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -71,8 +32,14 @@ while True:
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
+        
     # 将果实画上去
     screen.blit(food, (apple_x, apple_y))
+
+    x += 30             
+    position.append((x, y))
+    position.pop(0)
+    
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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