auto save

snake.py

 import pygame
 import pygame
 from pygame import locals
 from pygame import locals
-xy = [(180,90),(210,90),(240,90),(270,90)]
+xy = [(0,90),(30,90),(60,90),(90,90)]
 FPS = pygame.time.Clock()
 FPS = pygame.time.Clock()
-fx = 'right'
-x = 0
-y = 0
+x = 90
+y = 90
 
 
 # 初始化pygame，为使用硬件做准备
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 pygame.init()
@@ -15,9 +14,6 @@ screen = pygame.display.set_mode((660, 480))
 # 背景
 # 背景
 background = pygame.image.load('bg.png')
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 right = pygame.image.load('right.png')
-left = pygame.image.load('left.png')
-up = pygame.image.load('up.png')
-down = pygame.image.load('down.png')
 food = pygame.image.load('apple.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
 body = pygame.image.load('body.png')
 
 
@@ -27,36 +23,14 @@ while True:
         if event.type == locals.QUIT:
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             # 接收到退出事件后退出程序
             exit()
             exit()
-        if event.type == locals.KEYDOWN:
-            if event.key == K_RIGHT and fx != 'left':
-                fx = 'right'
-            elif event.key == K_LEFT and fx != 'right':
-                fx = 'left'
-            elif event.key == K_UP and fx != 'down':
-                fx = 'up'
-            else:
-                if fx != 'up':
-                    fx = 'down'
-    xy.append((x,y))
-    xy.pop(0)
+    x += 30
+    for i in range(4):
+        xy.del(i)
+        xy.insert(i,(x-4*30+i*30,y))
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
     # 将贪吃蛇画上去
-    if fx == 'right':
-        screen.blit(right, xy[3])
-        x += 30
-    else:
-        if fx == 'left':
-            screen.blit(left,xy[3])
-            x -= 30
-        else:
-            if fx == 'up':
-                screen.blit(up,xy[3])
-                y -= 30
-            else:
-                screen.blit(down,xy[3])
-                y += 30
-
+    screen.blit(right, xy[3])
     # 将贪吃蛇的身体画上去
     # 将贪吃蛇的身体画上去
     screen.blit(body, xy[2])
     screen.blit(body, xy[2])
     screen.blit(body, xy[1])
     screen.blit(body, xy[1])