auto save

lesson2-diy1.py → lesson2-diy2.py

 import pygame
 from pygame import locals
 
-# 初始化pygame，为使用硬件做准备
+# 初始化pygame，为使用硬件做准备            
 pygame.init()
 
 # 创建一个窗口
@@ -14,7 +14,8 @@ right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
-x, y = 240, 120   #
+x, y = 240, 120
+position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 while True:
     for event in pygame.event.get():
@@ -22,14 +23,16 @@ while True:
             # 接收到退出事件后退出程序
             exit()
     x += 30   #
+    position.append((x, y))
+    position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right, (x, y))  #
+    # 将贪吃蛇的头画上去
+    screen.blit(right, position[-1])  #
     # 将贪吃蛇的身体画上去
-    screen.blit(body, (210, 120))
-    screen.blit(body, (180, 120))
-    screen.blit(body, (180, 90))
+    for i in range(len(position)-1):
+        screen.blit(body, position[i])
+
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面