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I'm getting this error when trying to compile my c++ program, does anyone know where to start to fix this? Undefined reference to `PacketProcessor: :SetSeqStart (unsigned char)'|


when trying to change this

Code:

---

#include "packet.hpp"

PacketProcessor::PacketProcessor()
{
    this->firstdec = true;
    this->seqval = 1;
}

std::string PacketProcessor::GetFamilyName(PacketFamily family)
{
    switch (family)
    {
        case PACKET_CONNECTION: return "Connection";
        case PACKET_ACCOUNT: return "Account";
        case PACKET_CHARACTER: return "Character";
        case PACKET_LOGIN: return "Login";
        case PACKET_WELCOME: return "Welcome";
        case PACKET_WALK: return "Walk";
        case PACKET_FACE: return "Face";
        case PACKET_CHAIR: return "Chair";
        case PACKET_EMOTE: return "Emote";
        case PACKET_ATTACK: return "Attack";
        case PACKET_SHOP: return "Shop";
        case PACKET_ITEM: return "Item";
        case PACKET_STATSKILL: return "StatSkill";
        case PACKET_GLOBAL: return "Global";
        case PACKET_TALK: return "Talk";
        case PACKET_WARP: return "Warp";
        case PACKET_JUKEBOX: return "Jukebox";
        case PACKET_PLAYERS: return "Players";
        case PACKET_CLOTHES: return "Clothes";
        case PACKET_PARTY: return "Party";
        case PACKET_REFRESH: return "Refresh";
        case PACKET_NPC: return "NPC";
        case PACKET_AUTOREFRESH: return "AutoRefresh";
        case PACKET_APPEAR: return "Appear";
        case PACKET_PAPERDOLL: return "Paperdoll";
        case PACKET_EFFECT: return "Effect";
        case PACKET_TRADE: return "Trade";
        case PACKET_CHEST: return "Chest";
        case PACKET_DOOR: return "Door";
        case PACKET_PING: return "Ping";
        case PACKET_BANK: return "Bank";
        case PACKET_LOCKER: return "Locker";
        case PACKET_GUILD: return "Guild";
        case PACKET_SIT: return "Sit";
        case PACKET_BOARD: return "Board";
        case PACKET_ARENA: return "Arena";
        case PACKET_ADMININTERACT: return "AdminInteract";
        case PACKET_CITIZEN: return "Citizen";
        case PACKET_QUEST: return "Quest";
        case PACKET_BOOK: return "Book";
        case PACKET_F_INIT: return "Init";
        default: return "UNKNOWN";
    }
}

std::string PacketProcessor::GetActionName(PacketAction action)
{
    switch (action)
    {
        case PACKET_REQUEST: return "Request";
        case PACKET_ACCEPT: return "Accept";
        case PACKET_REPLY: return "Reply";
        case PACKET_REMOVE: return "Remove";
        case PACKET_AGREE: return "Agree";
        case PACKET_CREATE: return "Create";
        case PACKET_ADD: return "Add";
        case PACKET_PLAYER: return "Player";
        case PACKET_TAKE: return "Take";
        case PACKET_USE: return "Use";
        case PACKET_BUY: return "Buy";
        case PACKET_SELL: return "Sell";
        case PACKET_OPEN: return "Open";
        case PACKET_CLOSE: return "Close";
        case PACKET_MSG: return "Msg";
        case PACKET_SPEC: return "Spec";
        case PACKET_ADMIN: return "Admin";
        case PACKET_LIST: return "List";
        case PACKET_TELL: return "Tell";
        case PACKET_REPORT: return "Report";
        case PACKET_ANNOUNCE: return "Announce";
        case PACKET_SERVER: return "Server";
        case PACKET_DROP: return "Drop";
        case PACKET_JUNK: return "Junk";
        case PACKET_GET: return "Get";
        case PACKET_NET: return "Net";
        case PACKET_NET2: return "Net2";
        case PACKET_NET3: return "Net3";
        case PACKET_A_INIT: return "Init";
        default: return "UNKNOWN";
    }
}

std::string PacketProcessor::Decode(const std::string &str)
{
    std::string newstr;
    int length = str.length();
    int i = 0;
    int ii = 0;

    if (this->firstdec)
    {
        this->firstdec = false;
        return str;
    }

    newstr.resize(length);

    while (i < length)
    {
        newstr[ii++] = (unsigned char)str[i] ^ 0x80;
        i += 2;
    }

    --i;

    if (length % 2)
    {
        i -= 2;
    }

    do
    {
        newstr[ii++] = (unsigned char)str[i] ^ 0x80;
        i -= 2;
    } while (i >= 0);

    for (int i = 2; i < length; ++i)
    {
        if (static_cast<unsigned char>(newstr[i]) == 128)
        {
            newstr[i] = 0;
        }
        else if (newstr[i] == 0)
        {
            newstr[i] = 128;
        }
    }

    return this->DickWinderD(newstr);
}

std::string PacketProcessor::Encode(const std::string &rawstr)
{
    std::string fullstr;

    if (rawstr[1] != 255)
    {
        fullstr += rawstr.substr(0,4);
        fullstr += this->Sequence();
        fullstr += rawstr.substr(4);
    }

    std::string str = this->DickWinderE(fullstr);
    std::string newstr;
    int length = str.length();
    int i = 2;
    int ii = 2;

    newstr.resize(length);

    newstr[0] = str[0];
    newstr[1] = str[1];

    while (i < length)
    {
        newstr[i] = (unsigned char)str[ii++] ^ 0x80;
        i += 2;
    }

    i = length - 1;

    if (length % 2)
    {
        --i;
    }

    while (i >= 2)
    {
        newstr[i] = (unsigned char)str[ii++] ^ 0x80;
        i -= 2;
    }

    for (int i = 2; i < length; ++i)
    {
        if (static_cast<unsigned char>(newstr[i]) == 128)
        {
            newstr[i] = 0;
        }
        else if (newstr[i] == 0)
        {
            newstr[i] = 128;
        }
    }

    return newstr;
}

std::string PacketProcessor::DickWinder(const std::string &str, unsigned char emulti)
{
    std::string newstr;
    int length = str.length();
    std::string buffer;
    unsigned char c;

    if (emulti == 0)
    {
        return str;
    }

    for (int i = 0; i < length; ++i)
    {
        c = str[i];

        if (c % emulti == 0)
        {
            buffer += c;
        }
        else
        {
            if (buffer.length() > 0)
            {
                std::reverse(buffer.begin(), buffer.end());
                newstr += buffer;
                buffer.clear();
            }
            newstr += c;
        }
    }

    if (buffer.length() > 0)
    {
        std::reverse(buffer.begin(), buffer.end());
        newstr += buffer;
    }

    return newstr;
}

std::string PacketProcessor::DickWinderE(const std::string &str)
{
    return PacketProcessor::DickWinder(str, this->emulti_e);
}

std::string PacketProcessor::DickWinderD(const std::string &str)
{
    return PacketProcessor::DickWinder(str, this->emulti_d);
}

void PacketProcessor::SetEMulti(unsigned char emulti_e, unsigned char emulti_d)
{
    this->emulti_e = emulti_e;
    this->emulti_d = emulti_d;
}

void PacketProcessor::SetSeqStart(unsigned char val)
{
    this->seqstart = val;
}

unsigned char PacketProcessor::Sequence()
{
    int val = this->seqval;

    if (++this->seqval >= 10)
    {
        this->seqval = 0;
    }

    return this->seqstart + val;
}

unsigned int PacketProcessor::Number(unsigned char b1, unsigned char b2, unsigned char b3, unsigned char b4)
{
    if (b1 == 0 || b1 == 254) b1 = 1;
    if (b2 == 0 || b2 == 254) b2 = 1;
    if (b3 == 0 || b3 == 254) b3 = 1;
    if (b4 == 0 || b4 == 254) b4 = 1;

    --b1;
    --b2;
    --b3;
    --b4;

    return (b4*PacketProcessor::MAX3 + b3*PacketProcessor::MAX2 + b2*PacketProcessor::MAX1 + b1);
}

util::quadchar PacketProcessor::ENumber(unsigned int number)
{
    std::size_t throwaway;

    return PacketProcessor::ENumber(number, throwaway);
}

util::quadchar PacketProcessor::ENumber(unsigned int number, std::size_t &size)
{
    util::quadchar bytes(254);
    unsigned int onumber = number;

    if (onumber >= PacketProcessor::MAX3)
    {
        bytes[3] = number / PacketProcessor::MAX3 + 1;
        number = number % PacketProcessor::MAX3;
    }

    if (onumber >= PacketProcessor::MAX2)
    {
        bytes[2] = number / PacketProcessor::MAX2 + 1;
        number = number % PacketProcessor::MAX2;
    }

    if (onumber >= PacketProcessor::MAX1)
    {
        bytes[1] = number / PacketProcessor::MAX1 + 1;
        number = number % PacketProcessor::MAX1;
    }

    bytes[0] = number + 1;

    for (int i = 3; i >= 0; --i)
    {
        if (i == 0)
        {
            size = 1;
            break;
        }
        else if (bytes[i] > 0)
        {
            size = i + 1;
            break;
        }
    }

    return bytes;
}

unsigned short PacketProcessor::PID(PacketFamily b1, PacketAction b2)
{
    return b1 + b2*256;
}

util::pairchar PacketProcessor::EPID(unsigned short pid)
{
    util::pairchar bytes;

    bytes[1] = pid % 256;
    bytes[0] = pid / 256;

    return bytes;
}

PacketReader::PacketReader(const std::string &data)
{
    this->data = data;
    this->length = data.length();

//    for (std::size_t i = 0; i < data.length(); ++i)
//    {
//        printf("%s\n", data.c_str());
//        printf("%i_", int(data[i]));
//        printf("\n");
//    }
}

std::size_t PacketReader::Length()
{
    return this->length;
}

std::size_t PacketReader::Remaining()
{
    return this->data.length();
}

unsigned char PacketReader::PeekByte()
{
    unsigned char ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    ret = this->data[0];

    return ret;
}

unsigned char PacketReader::PeekChar()
{
    unsigned char ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    ret = PacketProcessor::Number(this->data[0]);

    return ret;
}

unsigned short PacketReader::PeekShort()
{
    unsigned short ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    if (this->data.length() < 2)
    {
        ret = PacketProcessor::Number(this->data[0]);
        this->data.erase(0, 1);
        return ret;
    }

    ret = PacketProcessor::Number(this->data[0], this->data[1]);

    return ret;
}

unsigned int PacketReader::PeekThree()
{
    unsigned int ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    if (this->data.length() < 2)
    {
        ret = PacketProcessor::Number(this->data[0]);
        this->data.erase(0, 1);
        return ret;
    }

    if (this->data.length() < 3)
    {
        ret = PacketProcessor::Number(this->data[0], this->data[1]);
        this->data.erase(0, 2);
        return ret;
    }

    ret = PacketProcessor::Number(this->data[0], this->data[1], this->data[2]);

    return ret;
}

unsigned int PacketReader::PeekInt()
{
    unsigned int ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    if (this->data.length() < 2)
    {
        ret = PacketProcessor::Number(this->data[0]);
        this->data.erase(0, 1);
        return ret;
    }

    if (this->data.length() < 3)
    {
        ret = PacketProcessor::Number(this->data[0], this->data[1]);
        this->data.erase(0, 2);
        return ret;
    }

    if (this->data.length() < 4)
    {
        ret = PacketProcessor::Number(this->data[0], this->data[1], this->data[2]);
        this->data.erase(0, 3);
        return ret;
    }

    ret = PacketProcessor::Number(this->data[0], this->data[1], this->data[2], this->data[3]);

    return ret;
}

unsigned char PacketReader::GetByte()
{
    unsigned char ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    ret = this->data[0];
    this->data.erase(0, 1);

    return ret;
}

unsigned char PacketReader::GetChar()
{
    unsigned char ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    ret = PacketProcessor::Number(this->data[0]);
    this->data.erase(0, 1);

    return ret;
}

unsigned short PacketReader::GetShort()
{
    unsigned short ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    if (this->data.length() < 2)
    {
        ret = PacketProcessor::Number(this->data[0]);
        this->data.erase(0, 1);
        return ret;
    }

    ret = PacketProcessor::Number(this->data[0], this->data[1]);
    this->data.erase(0, 2);

    return ret;
}

unsigned int PacketReader::GetThree()
{
    unsigned int ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    if (this->data.length() < 2)
    {
        ret = PacketProcessor::Number(this->data[0]);
        this->data.erase(0, 1);
        return ret;
    }

    if (this->data.length() < 3)
    {
        ret = PacketProcessor::Number(this->data[0], this->data[1]);
        this->data.erase(0, 2);
        return ret;
    }

    ret = PacketProcessor::Number(this->data[0], this->data[1], this->data[2]);
    this->data.erase(0, 3);

    return ret;
}

unsigned int PacketReader::GetInt()
{
    unsigned int ret;

    if (this->data.length() < 1)
    {
        return 0;
    }

    if (this->data.length() < 2)
    {
        ret = PacketProcessor::Number(this->data[0]);
        this->data.erase(0, 1);
        return ret;
    }

    if (this->data.length() < 3)
    {
        ret = PacketProcessor::Number(this->data[0], this->data[1]);
        this->data.erase(0, 2);
        return ret;
    }

    if (this->data.length() < 4)
    {
        ret = PacketProcessor::Number(this->data[0], this->data[1], this->data[2]);
        this->data.erase(0, 3);
        return ret;
    }

    ret = PacketProcessor::Number(this->data[0], this->data[1], this->data[2], this->data[3]);
    this->data.erase(0, 4);

    return ret;
}

std::string PacketReader::GetFixedString(std::size_t length)
{
    std::string ret;

    if (length == 0 || this->data.length() < length)
    {
        return ret;
    }

    ret = this->data.substr(0, length);
    this->data.erase(0, length);

    return ret;
}

std::string PacketReader::GetBreakString(unsigned char breakchar)
{
    std::string ret;
    std::size_t length;

    length = this->data.find_first_of(breakchar);

    if (length == std::string::npos)
    {
        return ret;
    }

    ret = this->data.substr(0, length);
    this->data.erase(0, length+1);

    return ret;
}

std::string PacketReader::GetEndString()
{
    std::string ret = this->data;

    this->data.erase();

    return ret;
}

PacketBuilder::PacketBuilder()
{
    this->length = 0;
    this->id = 0;
}

PacketBuilder::PacketBuilder(unsigned short id)
{
    this->length = 0;
    this->SetID(id);
}

PacketBuilder::PacketBuilder(PacketFamily family, PacketAction action)
{
    this->length = 0;
    this->SetID(family, action);
}

unsigned short PacketBuilder::SetID(unsigned short id)
{
    if (id == 0)
    {
        id = PacketProcessor::PID(PACKET_F_INIT, PACKET_A_INIT);
    }

    this->id = id;

    return this->id;
}

unsigned short PacketBuilder::SetID(PacketFamily family, PacketAction action)
{
    return this->SetID(PacketProcessor::PID(family, action));
}

unsigned char PacketBuilder::AddByte(unsigned char byte)
{
    ++this->length;
    this->data += byte;
    return byte;
}

unsigned char PacketBuilder::AddChar(unsigned char num)
{
    util::quadchar bytes;
    ++this->length;
    bytes = PacketProcessor::ENumber(num);
    this->data += bytes[0];
    return num;
}

unsigned short PacketBuilder::AddShort(unsigned short num)
{
    util::quadchar bytes;
    this->length += 2;
    bytes = PacketProcessor::ENumber(num);
    this->data += bytes[0];
    this->data += bytes[1];
    return num;
}

unsigned int PacketBuilder::AddThree(unsigned int num)
{
    util::quadchar bytes;
    this->length += 3;
    bytes = PacketProcessor::ENumber(num);
    this->data += bytes[0];
    this->data += bytes[1];
    this->data += bytes[2];
    return num;
}

unsigned int PacketBuilder::AddInt(unsigned int num)
{
    util::quadchar bytes;
    this->length += 4;
    bytes = PacketProcessor::ENumber(num);
    this->data += bytes[0];
    this->data += bytes[1];
    this->data += bytes[2];
    this->data += bytes[3];
    return num;
}

unsigned int PacketBuilder::AddVar(int min, int max, unsigned int num)
{
    if (min <= 1)
    {
        if (max <= 1 || num < PacketProcessor::MAX1)
        {
            this->AddChar(num);
            return num;
        }
    }

    if (min <= 2)
    {
        if (max <= 2 || num < PacketProcessor::MAX2)
        {
            this->AddShort(num);
            return num;
        }
    }

    if (min <= 3)
    {
        if (max <= 3 || num < PacketProcessor::MAX3)
        {
            this->AddThree(num);
            return num;
        }
    }

    this->AddInt(num);
    return num;
}

const std::string &PacketBuilder::AddString(const std::string &str)
{
    this->length += str.length();
    this->data += str;

    return str;
}

const std::string &PacketBuilder::AddBreakString(const std::string &str, unsigned char breakchar)
{
    std::string tempstr(str);
    std::size_t breakin = tempstr.find_first_of(breakchar);
    while (breakin != std::string::npos)
    {
        tempstr[breakin] = 'y';
        breakin = tempstr.find_first_of(breakchar, breakin+1);
    }

    this->length += tempstr.length() + 1;
    this->data += tempstr;
    this->data += breakchar;

    return str;
}

void PacketBuilder::Reset()
{
    this->length = 0;
    this->data.erase();
}

std::string PacketBuilder::Get()
{
    std::string retdata;
    util::pairchar id = PacketProcessor::EPID(this->id);
    util::quadchar length = PacketProcessor::ENumber(this->length + 2 + (id[1] != 255));

    retdata += length[0];
    retdata += length[1];
    retdata += id[0];
    retdata += id[1];
    retdata += this->data;

    return retdata;
}

PacketBuilder::operator std::string()
{
    return this->Get();
}

---

with this tutorial

Code:

---



in packet.cpp under the includes add


unsigned short seqstart;
unsigned char seqval = 1;

unsigned short Sequence()
{
    unsigned short val = seqval;

    if (++seqval >= 10)
    {
        seqval = 0;//was 0
    }

    return seqstart + val;
}

void SetSeqStart(unsigned short val)
{
    seqstart = val;
}
and remove these variables and functions

PacketProcessor::seqstartPacketProcessor::seqvalunsigned short PacketProcessor::Sequence()
{
    unsigned short val = seqval;

    if (++seqval >= 10)
    {
        seqval = 0;//was 0
    }

    return seqstart + val;
}

void PacketProcessor::SetSeqStart(unsigned short val)
{
    seqstart = val;
}
Replace your packet encode function with this

std::string PacketProcessor::Encode(const std::string &rawstr)
{

    std::string str = this->DickWinderE(rawstr);
    std::string newstr;
    int length = str.length();

    int i = 2;
    int ii = 2;

    newstr.resize(length);

    newstr[0] = str[0];
    newstr[1] = str[1];

    while (i < length)
    {
        newstr[i] = (unsigned char)str[ii++] ^ 0x80;
        i += 2;
    }

    i = length - 1;

    if (length % 2)
    {
        --i;
    }

    while (i >= 2)
    {
        newstr[i] = (unsigned char)str[ii++] ^ 0x80;
        i -= 2;
    }

    for (int i = 2; i < length; ++i)
    {
        if (static_cast<unsigned char>(newstr[i]) == 128)
        {
            newstr[i] = 0;
        }
        else if (newstr[i] == 0)
        {
            newstr[i] = 128;
        }
    }

    return newstr;
}
Near the bottom replace your PacketBulder::Get function with this

std::string PacketBuilder::Get()
{
    std::string retdata;
    util::pairchar id = PacketProcessor::EPID(this->id);

    int extra = (id[1] != 255);
    unsigned short sequence =  0;
    int bytes_ = 1;
    std::string seqdata = "";

    if(extra)
    {
        sequence = Sequence();

        if(sequence >= 253)
            bytes_ = 2;

        util::quadchar seq_ = PacketProcessor::ENumber(sequence);

        if(bytes_ == 1)
        {
            seqdata += seq_[0];
        }
        else
        {
            seqdata += seq_[0];
            seqdata += seq_[1];
        }
    }

    util::quadchar length = PacketProcessor::ENumber(this->length + 2 + (extra + bytes_ -1));

    retdata += length[0];
    retdata += length[1];
    retdata += id[0];
    retdata += id[1];
    retdata += seqdata;
    retdata += this->data;
    return retdata;
}



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Duplicate of this -> https://cboard.cprogramming.com/cplu...ed-char-|.html