save project

snake.py

 import pygame
 from pygame import locals
 
+headPosX = 240
+
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
@@ -21,12 +23,15 @@ while True:
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (240, 120))
+    screen.blit(right, (headPosX, 30))
     # 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))
     # 将果实画上去
     screen.blit(food, (360, 300))
+
+    headPosX += 30
+
     # 刷新画面
     pygame.display.update()
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