save project

snake.py

 import pygame
 from pygame import locals
 fkfs = pygame.time.Clock()
-
+import random
 # 初始化pygame，为使用硬件做准备
 pygame.init()
 
 # 创建一个窗口
 screen = pygame.display.set_mode((660, 480))
-
 # 背景
 background = pygame.image.load('bg.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')
 body = pygame.image.load('body.png')
 x,y = 240, 120
+a_x,a_y = 12, 10
 snake = [(180,90),(180,120),(210,120),(x,y)]
 setheading = "right"
+st = right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -24,15 +28,18 @@ while True:
         if event.type == locals.KEYDOWN:
             if event.key ==locals.K_UP and setheading !="down":
                 setheading = "up"
+                st = up
             if event.key ==locals.K_DOWN and setheading !="up":
                 setheading = "down"
+                st = down
             if event.key ==locals.K_LEFT and setheading !="right":
                 setheading = "left"
+                st = left
             if event.key ==locals.K_RIGHT and setheading !="left":
                 setheading = "right"
+                st = right
     # 将背景图画上去
-    a=(x,y)
-    snake.append(a)
+  
     if setheading == "up":
         y-=30
     if setheading == "down":
@@ -41,18 +48,25 @@ while True:
         x-=30
     if setheading == "right":
         x+=30
+    a=(x,y)
+    snake.append(a)
+    if x == a_x*30 and y == a_y*30:
+        a_x = random.randint(0,22)
+        a_y = random.randint(0,16)
+    snake.pop(0)
+    # 将贪吃蛇的身体画上去
     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(st, (x,y))
+    screen.blit(body, snake[-4])
     screen.blit(body, snake[-3])
     screen.blit(body, snake[-2])
-    screen.blit(body, snake[-1])
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (a_x*30,a_y*30))
     # 刷新画面
     pygame.display.update()
     fkfs.tick(3)
+    
     # a=(x,y)
     # snake.append(a)
-    snake.pop(0)
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+  
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