save project

snake.py

@@ -14,6 +14,8 @@ right = pygame.image.load('right.png')
 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():
         if event.type == locals.QUIT:
@@ -21,14 +23,13 @@ while True:
             exit()
 
     x += 30
-    # 将背景图画上去
-    screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-    screen.blit(right, (x,y))
-    # 将贪吃蛇的身体画上去
-    screen.blit(body, (x-30, y))
-    screen.blit(body, (x-60, y))
-    screen.blit(body, (x-90, y))
+    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])
+    
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面