int sinking(object ob)

{
	int i;
	int damage;
        if( ob && environment(ob) == this_object())
	{
	message_vision(HIW"$N又在流沙中陷深了一些！！", ob);
	message_vision("$N几乎在绝望中哭了出来！！\n"NOR, ob);
	damage = random(5)+1;
	i =  (int)ob->query("kee");
	ob->set("kee",(int) i - damage);
	if( environment(ob) == this_object())
	call_out("sinking",random(5)+5, ob);	
	}
	else

	return 1;
}

int cmd_darkshift(string str) {
    object ob;    
    int stealth, faith, intelligence, dex, stlth;

   if (!abil()) {
      notify_fail("What?\n");
      return 0;
   }
   if(this_player()->query_ghost()) return 0;
   if(this_player()->query_invis()) 
   { 
       notify_fail("You are already walking in darkness.\n");
       return 0;
   }
    stlth = (int)this_player()->query_skill("stealth");
    dex = (int)this_player()->query_stats("dexterity");
    faith = (int)this_player()->query_skill("faith");
    intelligence = (int)this_player()->query_stats("intelligence");
    stealth = ((stlth/3)+(dex)+(intelligence)+(faith/3));

    if(stealth < 15) {
        notify_fail("The demons laugh at you.\n");
        return 0;
    }
   if((int)this_player()->query_sp() < 50) {
        notify_fail("You are too tired.\n");
        return 0;
    }
   if((int)this_player()->query_mp() < 75) {
      notify_fail("You lack the magical energy needed.\n");
      return 0;
    }

    this_player()->set_invis();
    call_out("take_off", ((stlth/2)+dex+random(faith/2)), this_player());

    this_player()->add_mp(-((faith/3)+random(faith/3)));

    write("%^BLUE%^You shift into %^BOLD%^%^BLACK%^darkness%^RESET%^%^BLUE%^ and become completely undetectable!%^RESET%^\n");
    return 1;


}

void greeting(object me)
{
        object basket,food;
        
        if(!me->query("food_carrier")) return ;
        if(me->query("food_carrier")+60>time())
        {
                message_vision(CYN"�����������һ�ۣ�˵��������ʹ������Ҫ�ٵ�һ�