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()
 
@@ -16,9 +16,16 @@ 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
+#创建字体对象
+my_font=pygame.font.Font("neuropol.ttf",18)
+#创建分数变量Score，初始值为0
+score=0
 
 x, y = 240, 120
 position = [(180, 90), (180, 120), (210, 120), (x, y)]
+#创建两个变量，苹果的x坐标（初始值为360），苹果的y坐标（初始值为300）
+apple_x=360
+apple_y=300
 
 setheading = "right"
 snake_head = right
@@ -52,6 +59,13 @@ while True:
     else:
         y += 30
     position.append((x, y))
+    #吃苹果：苹果的x、y坐标与蛇头的x、y坐标相同时，苹果消失，再移动随机位置
+    if apple_x==x and apple_y ==y:
+        apple_x = random.randint(0,21)*30
+        apple_y = random.randint(0,15)*30
+        #分数增加10
+        score = score + 10
+    else:
         position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
@@ -62,7 +76,15 @@ while True:
         screen.blit(body, position[i])
 
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x, apple_y))
     # 刷新画面
+
+    #用info保存需要展示的信息内容
+    info = "Score " + str(score)
+    #用render函数渲染信息
+    text = my_font.render(info, True, (0,0,0))
+    #调用blit方法显示
+    screen.blit(text, (540,30))
+
     pygame.display.update()
     FPSCLOCK.tick(3)
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