OpenFusion/src/ChatManager.cpp

#include "CNShardServer.hpp"
#include "CNStructs.hpp"
#include "ChatManager.hpp"
#include "PlayerManager.hpp"
#include "TransportManager.hpp"
#include "TableData.hpp"
#include "NPCManager.hpp"
#include "MobManager.hpp"
#include "MissionManager.hpp"

#include <sstream>
#include <iterator>

std::map<std::string, ChatCommand> ChatManager::commands;

std::vector<std::string> parseArgs(std::string full) {
    std::stringstream ss(full);
    std::istream_iterator<std::string> begin(ss);
    std::istream_iterator<std::string> end;
    return std::vector<std::string>(begin, end);
}

bool runCmd(std::string full, CNSocket* sock) {
    std::vector<std::string> args = parseArgs(full);
    std::string cmd = args[0].substr(1, args[0].size() - 1);

    // check if the command exists
    if (ChatManager::commands.find(cmd) != ChatManager::commands.end()) {
        Player* plr = PlayerManager::getPlayer(sock);
        ChatCommand command = ChatManager::commands[cmd];

        // sanity check + does the player have the required account level to use the command?
        if (plr != nullptr && plr->accountLevel <= command.requiredAccLevel) {
            command.handlr(full, args, sock);
            return true;
        } else {
            ChatManager::sendServerMessage(sock, "You don't have access to that command!");
            return false;
        }
    }

    ChatManager::sendServerMessage(sock, "Unknown command!");
    return false;
}

void helpCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    ChatManager::sendServerMessage(sock, "Commands available to you:");
    Player *plr = PlayerManager::getPlayer(sock);

    for (auto& cmd : ChatManager::commands) {
        if (cmd.second.requiredAccLevel >= plr->accountId)
            ChatManager::sendServerMessage(sock, "/" + cmd.first + (cmd.second.help.length() > 0 ? " - " + cmd.second.help : ""));
    }
}

void accessCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    ChatManager::sendServerMessage(sock, "Your access level is " + std::to_string(PlayerManager::getPlayer(sock)->accountLevel));
}

void populationCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    ChatManager::sendServerMessage(sock, std::to_string(PlayerManager::players.size()) + " players online");
}

void levelCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    if (args.size() < 2) {
        ChatManager::sendServerMessage(sock, "/level: no level specified");
        return;
    }

    Player *plr = PlayerManager::getPlayer(sock);
    if (plr == nullptr)
        return;

    char *tmp;
    int level = std::strtol(args[1].c_str(), &tmp, 10);
    if (*tmp)
        return;

    if ((level < 1 || level > 36) && plr->accountLevel > 30)
        return;

    if (!(level < 1 || level > 36))
        plr->level = level;

    INITSTRUCT(sP_FE2CL_REP_PC_CHANGE_LEVEL, resp);

    resp.iPC_ID = plr->iID;
    resp.iPC_Level = level;

    sock->sendPacket((void*)&resp, P_FE2CL_REP_PC_CHANGE_LEVEL, sizeof(sP_FE2CL_REP_PC_CHANGE_LEVEL));
    PlayerManager::sendToViewable(sock, (void*)&resp, P_FE2CL_REP_PC_CHANGE_LEVEL, sizeof(sP_FE2CL_REP_PC_CHANGE_LEVEL));
}

void mssCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    if (args.size() < 2) {
        ChatManager::sendServerMessage(sock, "[MSS] Too few arguments");
        ChatManager::sendServerMessage(sock, "[MSS] Usage: /mss <route> <add/remove/goto/clear/test/export> <<height>>");
        return;
    }

    // Validate route number
    char* routeNumC;
    int routeNum = std::strtol(args[1].c_str(), &routeNumC, 10);
    if (*routeNumC) {
        // not an integer
        ChatManager::sendServerMessage(sock, "[MSS] Invalid route number '" + args[1] + "'");
        return;
    }

    if (args.size() < 3) {
        ChatManager::sendServerMessage(sock, "[MSS] Too few arguments");
        ChatManager::sendServerMessage(sock, "[MSS] Usage: /mss <route> <add/remove/goto/clear/test> <<height>>");
        return;
    }

    // get the route (if it doesn't exist yet, this will also make it)
    std::vector<WarpLocation>* route = &TableData::RunningSkywayRoutes[routeNum];

    // mss <route> add <height>
    if (args[2] == "add") {
        // make sure height token exists
        if (args.size() < 4) {
            ChatManager::sendServerMessage(sock, "[MSS] Point height must be specified");
            ChatManager::sendServerMessage(sock, "[MSS] Usage: /mss <route> add <height>");
            return;
        }
        // validate height token
        char* heightC;
        int height = std::strtol(args[3].c_str(), &heightC, 10);
        if (*heightC) {
            ChatManager::sendServerMessage(sock, "[MSS] Invalid height " + args[3]);
            return;
        }

        Player* plr = PlayerManager::getPlayer(sock);
        route->push_back({ plr->x, plr->y, height }); // add point
        ChatManager::sendServerMessage(sock, "[MSS] Added point (" + std::to_string(plr->x) + ", " + std::to_string(plr->y) + ", " + std::to_string(height) + ") to route " + std::to_string(routeNum));
        return;
    }

    // mss <route> remove
    if (args[2] == "remove") {
        if (route->empty()) {
            ChatManager::sendServerMessage(sock, "[MSS] Route " + std::to_string(routeNum) + " is empty");
            return;
        }

        WarpLocation pulled = route->back();
        route->pop_back(); // remove point at top of stack
        ChatManager::sendServerMessage(sock, "[MSS] Removed point (" + std::to_string(pulled.x) + ", " + std::to_string(pulled.y) + ", " + std::to_string(pulled.z) + ") from route " + std::to_string(routeNum));
        return;
    }

    // mss <route> goto
    if (args[2] == "goto") {
        if (route->empty()) {
            ChatManager::sendServerMessage(sock, "[MSS] Route " + std::to_string(routeNum) + " is empty");
            return;
        }

        WarpLocation pulled = route->back();
        PlayerManager::sendPlayerTo(sock, pulled.x, pulled.y, pulled.z);
        return;
    }

    // mss <route> clear
    if (args[2] == "clear") {
        route->clear();
        ChatManager::sendServerMessage(sock, "[MSS] Cleared route " + std::to_string(routeNum));
        return;
    }

    // mss <route> test
    if (args[2] == "test") {
        if (route->empty()) {
            ChatManager::sendServerMessage(sock, "[MSS] Route " + std::to_string(routeNum) + " is empty");
            return;
        }

        WarpLocation pulled = route->front();
        PlayerManager::sendPlayerTo(sock, pulled.x, pulled.y, pulled.z);
        TransportManager::testMssRoute(sock, route);
        return;
    }

    // for compatibility: mss <route> export
    if (args[2] == "export") {
        ChatManager::sendServerMessage(sock, "Wrote gruntwork to " + settings::GRUNTWORKJSON);
        TableData::flush();
        return;
    }

    // mss ????
    ChatManager::sendServerMessage(sock, "[MSS] Unknown command '" + args[2] + "'");
}

void summonWCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    if (args.size() < 2) {
        ChatManager::sendServerMessage(sock, "/summonW: no mob type specified");
        return;
    }
    Player* plr = PlayerManager::getPlayer(sock);

    char *rest;
    int type = std::strtol(args[1].c_str(), &rest, 10);
    if (*rest) {
        ChatManager::sendServerMessage(sock, "Invalid NPC number: " + args[1]);
        return;
    }

    // permission & sanity check
    if (plr == nullptr || type >= 3314)
        return;

    int team = NPCManager::NPCData[type]["m_iTeam"];

    assert(NPCManager::nextId < INT32_MAX);

#define EXTRA_HEIGHT 200
    BaseNPC *npc = nullptr;
    int id = NPCManager::nextId++;
    if (team == 2) {
        npc = new Mob(plr->x, plr->y, plr->z + EXTRA_HEIGHT, plr->instanceID, type, NPCManager::NPCData[type], id);
        MobManager::Mobs[npc->appearanceData.iNPC_ID] = (Mob*)npc;

        // re-enable respawning
        ((Mob*)npc)->summoned = false;
    } else {
        npc = new BaseNPC(plr->x, plr->y, plr->z + EXTRA_HEIGHT, 0, plr->instanceID, type, id);
    }

    npc->appearanceData.iAngle = (plr->angle + 180) % 360;
    NPCManager::NPCs[npc->appearanceData.iNPC_ID] = npc;

    NPCManager::updateNPCPosition(npc->appearanceData.iNPC_ID, plr->x, plr->y, plr->z);

    // if we're in a lair, we need to spawn the NPC in both the private instance and the template
    if (PLAYERID(plr->instanceID) != 0) {
        id = NPCManager::nextId++;

        if (team == 2) {
            npc = new Mob(plr->x, plr->y, plr->z + EXTRA_HEIGHT, MAPNUM(plr->instanceID), type, NPCManager::NPCData[type], id);

            MobManager::Mobs[npc->appearanceData.iNPC_ID] = (Mob*)npc;

            ((Mob*)npc)->summoned = false;
        } else {
            npc = new BaseNPC(plr->x, plr->y, plr->z + EXTRA_HEIGHT, 0, MAPNUM(plr->instanceID), type, id);
        }

        npc->appearanceData.iAngle = (plr->angle + 180) % 360;
        NPCManager::NPCs[npc->appearanceData.iNPC_ID] = npc;

        NPCManager::updateNPCPosition(npc->appearanceData.iNPC_ID, plr->x, plr->y, plr->z);
    }

    ChatManager::sendServerMessage(sock, "/summonW: placed mob with type: " + std::to_string(type) +
        ", id: " + std::to_string(npc->appearanceData.iNPC_ID));
    TableData::RunningMobs[npc->appearanceData.iNPC_ID] = npc; // only record the one in the template
}

void unsummonWCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    PlayerView& plrv = PlayerManager::players[sock];
    Player* plr = plrv.plr;

    BaseNPC* npc = NPCManager::getNearestNPC(plrv.currentChunks, plr->x, plr->y, plr->z);

    if (npc == nullptr) {
        ChatManager::sendServerMessage(sock, "/unsummonW: No NPCs found nearby");
        return;
    }

    if (TableData::RunningMobs.find(npc->appearanceData.iNPC_ID) == TableData::RunningMobs.end()) {
        ChatManager::sendServerMessage(sock, "/unsummonW: Closest NPC is not a gruntwork mob.");
        return;
    }

    ChatManager::sendServerMessage(sock, "/unsummonW: removed mob with type: " + std::to_string(npc->appearanceData.iNPCType) +
        ", id: " + std::to_string(npc->appearanceData.iNPC_ID));

    TableData::RunningMobs.erase(npc->appearanceData.iNPC_ID);

    NPCManager::destroyNPC(npc->appearanceData.iNPC_ID);
}

void toggleAiCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    MobManager::simulateMobs = !MobManager::simulateMobs;

    if (MobManager::simulateMobs)
        return;

    // return all mobs to their spawn points
    for (auto& pair : MobManager::Mobs) {
        pair.second->state = MobState::RETREAT;
        pair.second->target = nullptr;
        pair.second->nextMovement = getTime();

        // mobs with static paths can chill where they are
        if (pair.second->staticPath) {
            pair.second->roamX = pair.second->appearanceData.iX;
            pair.second->roamY = pair.second->appearanceData.iY;
            pair.second->roamZ = pair.second->appearanceData.iZ;
        } else {
            pair.second->roamX = pair.second->spawnX;
            pair.second->roamY = pair.second->spawnY;
            pair.second->roamZ = pair.second->spawnZ;
        }
    }
}

void npcRotateCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    PlayerView& plrv = PlayerManager::players[sock];
    Player* plr = plrv.plr;

    BaseNPC* npc = NPCManager::getNearestNPC(plrv.currentChunks, plr->x, plr->y, plr->z);

    if (npc == nullptr) {
        ChatManager::sendServerMessage(sock, "[NPCR] No NPCs found nearby");
        return;
    }

    int angle = (plr->angle + 180) % 360;
    NPCManager::updateNPCPosition(npc->appearanceData.iNPC_ID, npc->appearanceData.iX, npc->appearanceData.iY, npc->appearanceData.iZ, angle);

    // if it's a gruntwork NPC, rotate in-place
    if (TableData::RunningMobs.find(npc->appearanceData.iNPC_ID) != TableData::RunningMobs.end()) {
        NPCManager::updateNPCPosition(npc->appearanceData.iNPC_ID, npc->appearanceData.iX, npc->appearanceData.iY, npc->appearanceData.iZ, angle);

        ChatManager::sendServerMessage(sock, "[NPCR] Successfully set angle to " + std::to_string(angle) + " for gruntwork NPC "
            + std::to_string(npc->appearanceData.iNPC_ID));
    } else {
        TableData::RunningNPCRotations[npc->appearanceData.iNPC_ID] = angle;

        ChatManager::sendServerMessage(sock, "[NPCR] Successfully set angle to " + std::to_string(angle) + " for NPC "
            + std::to_string(npc->appearanceData.iNPC_ID));
    }

    // update rotation clientside
    INITSTRUCT(sP_FE2CL_NPC_ENTER, pkt);
    pkt.NPCAppearanceData = npc->appearanceData;
    sock->sendPacket((void*)&pkt, P_FE2CL_NPC_ENTER, sizeof(sP_FE2CL_NPC_ENTER));
}

void refreshCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    Player* plr = PlayerManager::getPlayer(sock);
    PlayerManager::sendPlayerTo(sock, plr->x, plr->y, plr->z);
}

void instanceCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {

    Player* plr = PlayerManager::getPlayer(sock);

    // no additional arguments: report current instance ID
    if (args.size() < 2) {
        ChatManager::sendServerMessage(sock, "[INST] Current instance ID: " + std::to_string(plr->instanceID));
        ChatManager::sendServerMessage(sock, "[INST] (Map " + std::to_string(MAPNUM(plr->instanceID)) + ", instance " + std::to_string(PLAYERID(plr->instanceID)) + ")");
        return;
    }

    // move player to specified instance
    // validate instance ID
    char* instanceS;
    int instance = std::strtol(args[1].c_str(), &instanceS, 10);
    if (*instanceS) {
        ChatManager::sendServerMessage(sock, "[INST] Invalid instance ID: " + args[1]);
        return;
    }

    PlayerManager::sendPlayerTo(sock, plr->x, plr->y, plr->z, instance);
    ChatManager::sendServerMessage(sock, "[INST] Switched to instance with ID " + std::to_string(instance));
}

void npcInstanceCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    PlayerView& plrv = PlayerManager::players[sock];
    Player* plr = plrv.plr;

    if (args.size() < 2) {
        ChatManager::sendServerMessage(sock, "[NPCI] Instance ID must be specified");
        ChatManager::sendServerMessage(sock, "[NPCI] Usage: /npci <instance ID>");
        return;
    }

    BaseNPC* npc = NPCManager::getNearestNPC(plrv.currentChunks, plr->x, plr->y, plr->z);

    if (npc == nullptr) {
        ChatManager::sendServerMessage(sock, "[NPCI] No NPCs found nearby");
        return;
    }

    // validate instance ID
    char* instanceS;
    int instance = std::strtol(args[1].c_str(), &instanceS, 10);
    if (*instanceS) {
        ChatManager::sendServerMessage(sock, "[NPCI] Invalid instance ID: " + args[1]);
        return;
    }

    ChatManager::sendServerMessage(sock, "[NPCI] Moving NPC with ID " + std::to_string(npc->appearanceData.iNPC_ID) + " to instance " + std::to_string(instance));
    TableData::RunningNPCMapNumbers[npc->appearanceData.iNPC_ID] = instance;
    NPCManager::updateNPCInstance(npc->appearanceData.iNPC_ID, instance);
}

void minfoCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    Player* plr = PlayerManager::getPlayer(sock);
    ChatManager::sendServerMessage(sock, "[MINFO] Current mission ID: " + std::to_string(plr->CurrentMissionID));

    for (int i = 0; i < ACTIVE_MISSION_COUNT; i++) {
        if (plr->tasks[i] != 0) {
            TaskData& task = *MissionManager::Tasks[plr->tasks[i]];
            if ((int)(task["m_iHMissionID"]) == plr->CurrentMissionID) {
                ChatManager::sendServerMessage(sock, "[MINFO] Current task ID: " + std::to_string(plr->tasks[i]));
                ChatManager::sendServerMessage(sock, "[MINFO] Current task type: " + std::to_string((int)(task["m_iHTaskType"])));
                ChatManager::sendServerMessage(sock, "[MINFO] Current waypoint NPC ID: " + std::to_string((int)(task["m_iSTGrantWayPoint"])));
                ChatManager::sendServerMessage(sock, "[MINFO] Current terminator NPC ID: " + std::to_string((int)(task["m_iHTerminatorNPCID"])));

                for (int j = 0; j < 3; j++)
                    if ((int)(task["m_iCSUEnemyID"][j]) != 0)
                        ChatManager::sendServerMessage(sock, "[MINFO] Current task mob #" + std::to_string(j+1) +": " + std::to_string((int)(task["m_iCSUEnemyID"][j])));

                return;
            }
        }
    }
}

void tasksCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {

    Player* plr = PlayerManager::getPlayer(sock);

    for (int i = 0; i < ACTIVE_MISSION_COUNT; i++) {
        if (plr->tasks[i] != 0) {
            TaskData& task = *MissionManager::Tasks[plr->tasks[i]];
            ChatManager::sendServerMessage(sock, "[TASK-" + std::to_string(i) + "] mission ID: " + std::to_string((int)(task["m_iHMissionID"])));
            ChatManager::sendServerMessage(sock, "[TASK-" + std::to_string(i) + "] task ID: " + std::to_string(plr->tasks[i]));
        }
    }
}

void flushCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {
    TableData::flush();
    ChatManager::sendServerMessage(sock, "Wrote gruntwork to " + settings::GRUNTWORKJSON);
}

void ChatManager::init() {
    REGISTER_SHARD_PACKET(P_CL2FE_REQ_SEND_FREECHAT_MESSAGE, chatHandler);
    REGISTER_SHARD_PACKET(P_CL2FE_REQ_PC_AVATAR_EMOTES_CHAT, emoteHandler);
    REGISTER_SHARD_PACKET(P_CL2FE_REQ_SEND_MENUCHAT_MESSAGE, menuChatHandler);

    registerCommand("help", 100, helpCommand, "list all unlocked server-side commands");
    registerCommand("access", 100, accessCommand, "print your access level");
    registerCommand("instance", 30, instanceCommand, "print or change your current instance");
    registerCommand("mss", 30, mssCommand, "edit Monkey Skyway routes");
    registerCommand("npcr", 30, npcRotateCommand, "rotate NPCs");
    registerCommand("npci", 30, npcInstanceCommand, "move NPCs across instances");
    registerCommand("summonW", 30, summonWCommand, "permanently summon NPCs");
    registerCommand("unsummonW", 30, unsummonWCommand, "delete permanently summoned NPCs");
    registerCommand("toggleai", 30, toggleAiCommand, "enable/disable mob AI");
    registerCommand("flush", 30, flushCommand, "save gruntwork to file");
    registerCommand("level", 50, levelCommand, "change your character's level");
    registerCommand("population", 100, populationCommand, "check how many players are online");
    registerCommand("refresh", 100, refreshCommand, "teleport yourself to your current location");
    registerCommand("minfo", 30, minfoCommand, "show details of the current mission and task.");
    registerCommand("tasks", 30, tasksCommand, "list all active missions and their respective task ids.");
}

void ChatManager::registerCommand(std::string cmd, int requiredLevel, CommandHandler handlr, std::string help) {
    commands[cmd] = ChatCommand(requiredLevel, handlr, help);
}

void ChatManager::chatHandler(CNSocket* sock, CNPacketData* data) {
    if (data->size != sizeof(sP_CL2FE_REQ_SEND_FREECHAT_MESSAGE))
        return; // malformed packet

    sP_CL2FE_REQ_SEND_FREECHAT_MESSAGE* chat = (sP_CL2FE_REQ_SEND_FREECHAT_MESSAGE*)data->buf;
    Player* plr = PlayerManager::getPlayer(sock);

    std::string fullChat = U16toU8(chat->szFreeChat);

    if (fullChat.length() > 1 && fullChat[0] == CMD_PREFIX) { // PREFIX
        runCmd(fullChat, sock);
        return;
    }

    // send to client
    INITSTRUCT(sP_FE2CL_REP_SEND_FREECHAT_MESSAGE_SUCC, resp);
    memcpy(resp.szFreeChat, chat->szFreeChat, sizeof(chat->szFreeChat));
    resp.iPC_ID = plr->iID;
    resp.iEmoteCode = chat->iEmoteCode;
    sock->sendPacket((void*)&resp, P_FE2CL_REP_SEND_FREECHAT_MESSAGE_SUCC, sizeof(sP_FE2CL_REP_SEND_FREECHAT_MESSAGE_SUCC));

    // send to visible players
    PlayerManager::sendToViewable(sock, (void*)&resp, P_FE2CL_REP_SEND_FREECHAT_MESSAGE_SUCC, sizeof(sP_FE2CL_REP_SEND_FREECHAT_MESSAGE_SUCC));
}

void ChatManager::menuChatHandler(CNSocket* sock, CNPacketData* data) {
    if (data->size != sizeof(sP_CL2FE_REQ_SEND_MENUCHAT_MESSAGE))
        return; // malformed packet
    sP_CL2FE_REQ_SEND_MENUCHAT_MESSAGE* chat = (sP_CL2FE_REQ_SEND_MENUCHAT_MESSAGE*)data->buf;

    // send to client
    INITSTRUCT(sP_FE2CL_REP_SEND_MENUCHAT_MESSAGE_SUCC, resp);
    memcpy(resp.szFreeChat, chat->szFreeChat, sizeof(chat->szFreeChat));
    resp.iPC_ID = PlayerManager::players[sock].plr->iID;
    resp.iEmoteCode = chat->iEmoteCode;
    sock->sendPacket((void*)&resp, P_FE2CL_REP_SEND_MENUCHAT_MESSAGE_SUCC, sizeof(sP_FE2CL_REP_SEND_MENUCHAT_MESSAGE_SUCC));

    // send to visible players
    PlayerManager::sendToViewable(sock, (void*)&resp, P_FE2CL_REP_SEND_MENUCHAT_MESSAGE_SUCC, sizeof(sP_FE2CL_REP_SEND_MENUCHAT_MESSAGE_SUCC));
}

void ChatManager::emoteHandler(CNSocket* sock, CNPacketData* data) {
    if (data->size != sizeof(sP_CL2FE_REQ_PC_AVATAR_EMOTES_CHAT))
        return; // ignore the malformed packet

    // you can dance with friends!!!!!!!!

    sP_CL2FE_REQ_PC_AVATAR_EMOTES_CHAT* emote = (sP_CL2FE_REQ_PC_AVATAR_EMOTES_CHAT*)data->buf;
    Player* plr = PlayerManager::getPlayer(sock);

    // send to client
    INITSTRUCT(sP_FE2CL_REP_PC_AVATAR_EMOTES_CHAT, resp);
    resp.iEmoteCode = emote->iEmoteCode;
    resp.iID_From = plr->iID;
    sock->sendPacket((void*)&resp, P_FE2CL_REP_PC_AVATAR_EMOTES_CHAT, sizeof(sP_FE2CL_REP_PC_AVATAR_EMOTES_CHAT));

    // send to visible players (players within render distance)
    PlayerManager::sendToViewable(sock, (void*)&resp, P_FE2CL_REP_PC_AVATAR_EMOTES_CHAT, sizeof(sP_FE2CL_REP_PC_AVATAR_EMOTES_CHAT));
}

void ChatManager::sendServerMessage(CNSocket* sock, std::string msg) {
    INITSTRUCT(sP_FE2CL_PC_MOTD_LOGIN, motd);

    motd.iType = 1;
    // convert string to u16 and write it to the buffer
    U8toU16(msg, (char16_t*)motd.szSystemMsg, sizeof(motd.szSystemMsg));

    // send the packet :)
    sock->sendPacket((void*)&motd, P_FE2CL_PC_MOTD_LOGIN, sizeof(sP_FE2CL_PC_MOTD_LOGIN));
}