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()
@@ -19,9 +20,20 @@ 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   # 苹果横坐标
+apple_y = 300   # 苹果纵坐标
 
 setheading = "right"
 snake_head = right
+my_font = pygame.font.Font('neuropol.ttf', 18)  # 字体
+
+def newAppleXY():
+    global apple_x,apple_y
+    num1= random.randint(0, 21)   # 横排第几个格子
+    num2 = random.randint(0, 15)   # 竖排第几个格子
+    apple_x = 30*num1   # 苹果的x坐标
+    apple_y = 30*num2   # 苹果的y坐标
+score = 0
 
 while True:
     for event in pygame.event.get():
@@ -51,8 +63,26 @@ while True:
         y -= 30
     else:
         y += 30
+
+    # if x < 0 or x > 630 or y < 0 or y > 450:
+
+    if x < 0:
+        x = 630
+    if x > 630:
+        x = 0
     position.append((x, y))
+    # 贪吃蛇吃到了苹果
+    if (x , y) ==  (apple_x,apple_y):
+        score += 10
+        newAppleXY()
+        while (apple_x,apple_y) in position:
+            newAppleXY()
+    else:
         position.pop(0)
+
+    #蛇头不能碰到蛇身（不能吃自己）
+    if (x , y) == position[0:-1]:
+        exit()
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
@@ -62,7 +92,10 @@ 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))
+    info = "Score:"+ str(score)
+    text = my_font.render(info, True, (0, 0, 0))
+    screen.blit(text, (540, 10))
     # 刷新画面
     pygame.display.update()
     FPSCLOCK.tick(3)
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