auto save

snake.py

 import pygame
-import random
 from pygame import locals
+import random
+
+# 初始化pygame，为使用硬件做准备
 pygame.init()
 
-screen = pygame.display.set_mode((661, 481))
-FPSCLOCK = pygame.time.Clock()
+# 创建一个窗口
+screen = pygame.display.set_mode((660, 480))
+FPSCLOCK = pygame.time.Clock()  # pygame时钟，控制游戏速度（帧数）
 
+# 背景
 background = pygame.image.load('bg.png')
-right = pygame.image.load('right.png')
-food = pygame.image.load('apple.png')
-body = pygame.image.load('body.png')
-left = pygame.image.load('left.png')
-up = pygame.image.load('up.png')
-down = pygame.image.load('down.png')
+right = pygame.image.load('right.png')      # 头 朝右
+food = pygame.image.load('apple.png')       # 食物 苹果
+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',10)
 
-
-x2=330
-y2=330
 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
+score = 0
 
 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":
@@ -41,8 +45,9 @@ while True:
                 snake_head = up
             if event.key == locals.K_DOWN and setheading != "up":
                 setheading = 'down'
-                snake_head = down       
+                snake_head = down
 
+    # 设置贪吃蛇的头部坐标
     if setheading == "right":
         x += 30
     elif setheading == "left":
@@ -51,23 +56,29 @@ while True:
         y -= 30
     else:
         y += 30
-
     position.append((x, y))
-
-    if x2==x and y2==y:
-        x2=random.randint(0,21)
-        y2=random.randint(0,15)
-        x2=x2*30
-        y2=y2*30
+    # 贪吃蛇吃到了苹果
+    if x == apple_x and y == apple_y:
+        num1= random.randint(1, 22)   # 横排第几个格子
+        num2 = random.randint(1, 16)   # 竖排第几个格子
+        apple_x = 30*num1-30   # 苹果的x坐标
+        apple_y = 30*num2-30   # 苹果的y坐标
     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
     screen.blit(snake_head, position[-1])
-
+    # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body, position[i])
 
-    screen.blit(food, (x2, y2))
+    # 将果实画上去
+    screen.blit(food, (apple_x, apple_y))
+
+    info = "Scoret:"+ str(score)
+    text = my_font.render(info,True,(0,0,255))
+    screen.blit(text,(540,10))
+    # 刷新画面
     pygame.display.update()
-    FPSCLOCK.tick(0.01)
\ No newline at end of file
+    FPSCLOCK.tick(3)
\ No newline at end of file