Walk pvp

bool Player::canWalkthrough(const Creature* creature) const
{
    if(creature == this || hasFlag(PlayerFlag_CanPassThroughAllCreatures) || creature->isWalkable() ||
        std::find(forceWalkthrough.begin(), forceWalkthrough.end(), creature->getID()) != forceWalkthrough.end()
        || (creature->getMaster() && creature->getMaster() != this && canWalkthrough(creature->getMaster())))
        return true;

    const Player* player = creature->getPlayer();
    if(!player)
        return false;

    if(((g_game.getWorldType() == WORLDTYPE_OPTIONAL && !player->isEnemy(this, true) &&
        !player->isProtected()) || player->getTile()->hasFlag(TILESTATE_PROTECTIONZONE) || player->isProtected()) && player->getTile()->ground
        && Item::items[player->getTile()->ground->getID()].walkStack && (!player->hasCustomFlag(PlayerCustomFlag_GamemasterPrivileges)
        || player->getAccess() <= getAccess()))
        return true;

    return (player->isGhost() && getGhostAccess() < player->getGhostAccess())
        || (isGhost() && getGhostAccess() > player->getGhostAccess());
}

void Player::setWalkthrough(const Creature* creature, bool walkthrough)
{
    std::vector<uint32_t>::iterator it = std::find(forceWalkthrough.begin(),
        forceWalkthrough.end(), creature->getID());
    bool update = false;
    if(walkthrough && it == forceWalkthrough.end())
    {
        forceWalkthrough.push_back(creature->getID());
        update = true;
    }
    else if(!walkthrough && it != forceWalkthrough.end())
    {
        forceWalkthrough.erase(it);
        update = true;
    }

    if(update)
        sendCreatureWalkthrough(creature, !walkthrough ? canWalkthrough(creature) : walkthrough);
}