save project

snake.py

@@ -13,6 +13,7 @@ right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 x,y=240,120
+BT=[(180,90),(180,120),(210,120),(x,y)]
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -20,16 +21,17 @@ while True:
             exit()
     # 将背景图画上去
     x += 30
+    BT.append((x,y))
+    BT.pop(0)
 
     SB=pygame.time.Clock()
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right, (x,y))
+    screen.blit(right, BT[-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))
-    # 将果实画上去
+    for i in range(len(BT)-1):
+        screen.blit(body,BT[i])
+    
     screen.blit(food, (360, 300))
     # 刷新画面
     pygame.display.update()