Pvp command

ACMD(do_pvp)
{
    if (ch->GetArena() != NULL || CArenaManager::instance().IsArenaMap(ch->GetMapIndex()) == true)
    {
        ch->ChatPacket(CHAT_TYPE_INFO, LC_TEXT("You can't use this in the arena."));
        return;
    }

#ifdef ENABLE_DUEL_OPTIONS
    char arg1[256], arg2[256];
    two_arguments(argument, arg1, sizeof(arg1), arg2, sizeof(arg2));

    DWORD vid = 0;
    BYTE bIsSpecial = 0;
    str_to_number(vid, arg1);
    str_to_number(bIsSpecial, arg2);
#else
    char arg1[256];
    one_argument(argument, arg1, sizeof(arg1));

    DWORD vid = 0;
    str_to_number(vid, arg1);
#endif

    LPCHARACTER pkVictim = CHARACTER_MANAGER::instance().Find(vid);

    if (!pkVictim)
        return;

    if (pkVictim->IsNPC())
        return;

    if (pkVictim->GetArena() != NULL)
    {
        pkVictim->ChatPacket(CHAT_TYPE_INFO, LC_TEXT("You can't use this in the arena."));
        return;
    }

#ifdef ENABLE_DUEL_OPTIONS
    CPVPManager::instance().Insert(ch, pkVictim, bIsSpecial ? true : false);
#else
    CPVPManager::instance().Insert(ch, pkVictim);
#endif
}