/*  Starshatter OpenSource Distribution
    Copyright (c) 1997-2004, Destroyer Studios LLC.
    All Rights Reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name "Destroyer Studios" nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    SUBSYSTEM:    Stars.exe
    FILE:         NetUtil.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Utility class to simplify sending NetData messages.
*/


#include "MemDebug.h"
#include "NetUtil.h"
#include "NetData.h"
#include "NetGame.h"
#include "NetGameServer.h"

#include "Element.h"
#include "Instruction.h"
#include "Random.h"
#include "Ship.h"
#include "Shot.h"
#include "System.h"
#include "Weapon.h"

// +-------------------------------------------------------------------+

void
NetUtil::SendObjDamage(SimObject* obj, double dmg, Shot* shot)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj) return;

    if (net_game->IsServer() && obj->GetObjID()) {
        NetObjDamage damage;
        damage.SetObjID(obj->GetObjID());
        damage.SetDamage((float) dmg);

        if (shot)
        damage.SetShotID(shot->GetObjID());

        net_game->SendData(&damage);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendSysDamage(Ship* obj, System* sys, double dmg)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj || !sys) return;

    if (net_game->IsServer() && obj->GetObjID()) {
        NetSysDamage damage;
        damage.SetObjID(obj->GetObjID());
        damage.SetDamage(dmg);
        damage.SetSystem(sys->GetID());

        net_game->SendData(&damage);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendSysStatus(Ship* obj, System* sys)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj || !sys) return;

    if (obj->GetObjID()) {
        NetSysStatus status;
        status.SetObjID(obj->GetObjID());
        status.SetSystem( (int) sys->GetID());
        status.SetStatus( (int) sys->Status());
        status.SetPower(  (int) sys->GetPowerLevel());
        status.SetReactor((int) sys->GetSourceIndex());
        status.SetAvailablility(sys->Availability());

        net_game->SendData(&status);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendObjKill(Ship* obj, const Ship* killer, int type, int deck)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj) return;

    if (type == NetObjKill::KILL_DOCK || (net_game->IsServer() && obj->GetObjID())) {
        NetObjKill kill;
        kill.SetObjID(obj->GetObjID());
        kill.SetFlightDeck(deck);

        if (killer)
        kill.SetKillerID(killer->GetObjID());

        kill.SetKillType(type);

        if (type != NetObjKill::KILL_DOCK && obj->RespawnCount() > 0) {
            Print("NetObjKill preparing respawn for %s\n", obj->Name());

            Point respawn_loc = RandomPoint() * 1.75;
            kill.SetRespawn(true);
            kill.SetRespawnLoc(respawn_loc);
            obj->SetRespawnLoc(respawn_loc);
        }
        else {
            Print("NetObjKill no respawn for %s\n", obj->Name());
        }

        net_game->SendData(&kill);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendObjHyper(Ship* obj, const char* rgn, const Point& loc,
const Ship* fc1, const Ship* fc2, int transtype)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj) return;

    if (obj->GetObjID()) {
        NetObjHyper obj_hyper;
        obj_hyper.SetObjID(obj->GetObjID());
        obj_hyper.SetRegion(rgn);
        obj_hyper.SetLocation(loc);
        obj_hyper.SetTransitionType(transtype);

        if (fc1)
        obj_hyper.SetFarcaster1(fc1->GetObjID());

        if (fc2)
        obj_hyper.SetFarcaster2(fc2->GetObjID());

        net_game->SendData(&obj_hyper);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendObjTarget(Ship* obj)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj) return;

    if (obj->GetObjID()) {
        NetObjTarget obj_target;
        obj_target.SetObjID(obj->GetObjID());

        SimObject* target = obj->GetTarget();
        if (target) {
            obj_target.SetTgtID(target->GetObjID());

            System* subtarget = obj->GetSubTarget();

            if (subtarget) {
                Ship* s = (Ship*) target;
                obj_target.SetSubtarget(subtarget->GetID());
            }
        }

        net_game->SendData(&obj_target);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendObjEmcon(Ship* obj)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj) return;

    if (obj->GetObjID()) {
        NetObjEmcon obj_emcon;
        obj_emcon.SetObjID(obj->GetObjID());
        obj_emcon.SetEMCON(obj->GetEMCON());
        net_game->SendData(&obj_emcon);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendWepTrigger(Weapon* wep, int count)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !wep) return;

    if (wep->IsPrimary() || net_game->IsClient()) {
        NetWepTrigger trigger;
        trigger.SetObjID(wep->Owner()->GetObjID());

        SimObject* target = wep->GetTarget();
        if (target) {
            trigger.SetTgtID(target->GetObjID());

            System* subtarget = wep->GetSubTarget();

            if (subtarget) {
                Ship* s = (Ship*) target;
                trigger.SetSubtarget(subtarget->GetID());
            }
        }

        trigger.SetIndex(wep->GetIndex());
        trigger.SetCount(count);
        trigger.SetDecoy(wep->IsDecoy());
        trigger.SetProbe(wep->IsProbe());

        net_game->SendData(&trigger);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendWepRelease(Weapon* wep, Shot* shot)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !wep || !shot) return;

    if (net_game->IsServer() && wep->IsMissile()) {
        DWORD wepid = NetGame::GetNextObjID(NetGame::SHOT);
        shot->SetObjID(wepid);

        NetWepRelease release;
        release.SetObjID(wep->Owner()->GetObjID());

        SimObject* target = wep->GetTarget();
        if (target)
        release.SetTgtID(target->GetObjID());

        System* subtarget = wep->GetSubTarget();
        if (target && subtarget && target->Type() == SimObject::SIM_SHIP) {
            Ship* tgt = (Ship*) target;
            release.SetSubtarget(subtarget->GetID());
        }

        release.SetWepID(wepid);
        release.SetIndex(wep->GetIndex());
        release.SetDecoy(shot->IsDecoy());
        release.SetProbe(shot->IsProbe());

        net_game->SendData(&release);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendWepDestroy(Shot* shot)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !shot) return;

    if (net_game->IsServer() && shot->GetObjID()) {
        NetWepDestroy destroy;

        destroy.SetObjID(shot->GetObjID());

        net_game->SendData(&destroy);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendChat(DWORD dst, const char* name, const char* text)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !name || !*name || !text || !*text) return;

    NetChatMsg chat_msg;
    chat_msg.SetDstID(dst);
    chat_msg.SetName(name);
    chat_msg.SetText(text);

    if (net_game->IsClient()) {
        net_game->SendData(&chat_msg);
    }

    else {
        NetGameServer* net_game_server = (NetGameServer*) net_game;
        net_game_server->RouteChatMsg(chat_msg);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendElemRequest(const char* name)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !name) return;

    NetElemRequest elem_request;
    elem_request.SetName(name);

    ::Print("NetUtil::SendElemRequest name: '%s'\n", name);
    net_game->SendData(&elem_request);
}

// +-------------------------------------------------------------------+

void
NetUtil::SendElemCreate(Element* elem, int squadron, int* slots, bool alert, bool in_flight)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !elem) return;

    NetElemCreate elem_create;
    elem_create.SetName(elem->Name());
    elem_create.SetType(elem->Type());
    elem_create.SetIFF(elem->GetIFF());
    elem_create.SetIntel(elem->IntelLevel());
    elem_create.SetLoadout(elem->Loadout());
    elem_create.SetSquadron(squadron);
    elem_create.SetSlots(slots);
    elem_create.SetAlert(alert);
    elem_create.SetInFlight(in_flight);

    if (elem->NumObjectives() > 0) {
        Instruction* obj = elem->GetObjective(0);

        if (obj) {
            elem_create.SetObjCode(obj->Action());
            elem_create.SetObjective(obj->TargetName());
        }
    }

    if (elem->GetCarrier())
    elem_create.SetCarrier(elem->GetCarrier()->Name());

    if (elem->GetCommander())
    elem_create.SetCommander(elem->GetCommander()->Name());

    ::Print("NetUtil::SendElemCreate iff: %d name: '%s'\n", elem->GetIFF(), elem->Name().data());
    net_game->SendData(&elem_create);
}

// +-------------------------------------------------------------------+

void
NetUtil::SendShipLaunch(Ship* carrier, int squadron, int slot)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !carrier) return;

    if (carrier->GetObjID()) {
        NetShipLaunch ship_launch;

        ship_launch.SetObjID(carrier->GetObjID());
        ship_launch.SetSquadron(squadron);
        ship_launch.SetSlot(slot);

        net_game->SendData(&ship_launch);
    }
}

// +-------------------------------------------------------------------+

void
NetUtil::SendNavData(bool add, Element* elem, int index, Instruction* navpt)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !elem || !navpt) return;

    // resolve rloc before copying the navpoint into the net nav data structure:
    Point loc = navpt->Location();

    NetNavData nav_data;
    nav_data.SetObjID(net_game->GetObjID());
    nav_data.SetAdd(add);
    nav_data.SetElem(elem->Name());
    nav_data.SetIndex(index);
    nav_data.SetNavPoint(navpt);

    net_game->SendData(&nav_data);
}

// +-------------------------------------------------------------------+

void
NetUtil::SendNavDelete(Element* elem, int index)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !elem) return;

    NetNavDelete nav_delete;
    nav_delete.SetObjID(net_game->GetObjID());
    nav_delete.SetElem(elem->Name());
    nav_delete.SetIndex(index);

    net_game->SendData(&nav_delete);
}

// +-------------------------------------------------------------------+

void
NetUtil::SendSelfDestruct(Ship* obj, double dmg)
{
    NetGame* net_game = NetGame::GetInstance();
    if (!net_game || !obj) return;

    if (obj->GetObjID()) {
        NetSelfDestruct sd;
        sd.SetObjID(obj->GetObjID());
        sd.SetDamage((float) dmg);

        net_game->SendData(&sd);
    }
}