save project

snake.py

 import pygame
 from pygame import locals
-
+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')
@@ -19,8 +17,8 @@ f=pygame.time.Clock()
 x,y=240,120
 p=[(180,90),(180,120),(210,120),(x,y)]
 setheading="right"
-
-
+apple_x=300
+apple_y=360
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -35,14 +33,9 @@ while True:
                 setheading="up"
             if event.key==locals.K_DOWN and setheading != "up":
                 setheading="down"
-            
-            
-
-    
     # 将背景图画上去
     screen.blit(background, (0, 0))
-    # 将贪吃蛇画上去
-   # screen.blit(right, (x, y))
+    # 将贪吃蛇画上去   
     # 将贪吃蛇的身体画上去
     if setheading=="right":
         x+=30
@@ -56,16 +49,16 @@ while True:
     else :
         y+=30
         screen.blit(down,(x,y))
-    p.append((x,y))
-    p.pop(0)
-    #screen.blit(body, (210, 120))
-    #screen.blit(body, (180, 120))
-    #screen.blit(body, (180, 90))
+    p.append((x,y))  
     for i in range (len(p)-1):
         screen.blit(body,p[i])
-
+    if x==apple_x and y==apple_y:
+        apple_x=random.randint(0,21)*30
+        apple_y=random.randint(0,15)*30
+    else:
+        p.pop(0)    
      # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x,apple_y))
     # 刷新画面
     pygame.display.update()
-    f.tick(3)
\ No newline at end of file
+    f.tick(3)