auto save

snake.py

@@ -4,6 +4,7 @@ from pygame import locals
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 x,y=240,120
+position=[(180,90),(180,120),(210,120),(x,y)]
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
 fpsclock=pygame.time.Clock()
@@ -20,13 +21,14 @@ while True:
             exit()
     # 将背景图画上去
     x+=30
+    position.append((x,y))
+    position.pop(0)
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x, y))
+    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