save project

snake.py

 import pygame
 from pygame import locals
-xy = [()]
+x = [180,180,210,240]
+y = [90,120,120,120]
 FPS = pygame.time.Clock()
 
 # 初始化pygame，为使用硬件做准备
@@ -21,16 +22,23 @@ while True:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             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))
+    screen.blit(right, (x[3],y[3]))
     # 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))
+    screen.blit(body, (x[2],y[2]))
+    screen.blit(body, (x[1],y[1]))
+    screen.blit(body, (x[0],y[0]))
     # 将果实画上去
     screen.blit(food, (360, 300))
     # 刷新画面
-    pygame.display.update()
\ No newline at end of file
+    pygame.display.update()
+    for i in range(len(x)):
+        if y[i] == y[3]:
+            x[i] = x[i] + 30
+        else:
+            if y[i] > y[3]:
+                y[i] = y[i] -30
+            else:
+                y[i] = y[i] + 30
\ No newline at end of file