save project

snake.py

@@ -16,6 +16,7 @@ food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 
 x, y = 240,120
+position = [(180, 90), (180, 120), (210, 120), (x, y)]
 
 while True:
     for event in pygame.event.get():
@@ -23,14 +24,16 @@ while True:
             # 接收到退出事件后退出程序
             exit()
     x += 30
-    # 将背景图画上去
+    position.append((x, y))
+    position.pop(0)
     screen.blit(background, (0, 0))
+    screen.blit(right,  position[-1])
+    for i in range(len(position)-1):
+        screen.blit(body, position[i])
     # 将贪吃蛇画上去
     screen.blit(right, (x, y))
     # 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))
     # 刷新画面