save project

snake.py

@@ -11,7 +11,7 @@ FPSCLOCK=pygame.time.Clock()
 # 背景
 background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
-food = pygame.image.load('apple.png')
+food = pygame.image.load('apple1.png')
 body = pygame.image.load('body.png')
 left= pygame.image.load('left.png')
 up = pygame.image.load('up.png')
@@ -53,9 +53,11 @@ while True:
         y += 30 
     position.append((x,y))
     if x==apple_x and y == apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
-
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
+        apple_x=30*num1-30
+        apple_y=30*num2-30
+    else:
         position.pop(0)       
     # 将背景图画上去
     screen.blit(background, (0, 0))