/*  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:         NetGame.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Network Game Manager class
*/

#include "MemDebug.h"
#include "NetGame.h"
#include "NetGameClient.h"
#include "NetGameServer.h"
#include "NetClientConfig.h"
#include "NetServerConfig.h"
#include "NetPlayer.h"

#include "NetMsg.h"
#include "NetData.h"
#include "NetLayer.h"

#include "Player.h"
#include "Ship.h"
#include "ShipDesign.h"
#include "Sim.h"
#include "Element.h"
#include "HUDView.h"

#include "NetHost.h"
#include "Game.h"
#include "Light.h"

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

const int MAX_NET_FPS   = 20;
const int MIN_NET_FRAME = 1000 / MAX_NET_FPS;

const DWORD SHIP_ID_START = 0x0010;
const DWORD SHOT_ID_START = 0x0400;

static NetGame* netgame    = 0;

static DWORD   ship_id_key = SHIP_ID_START;
static DWORD   shot_id_key = SHOT_ID_START;

static long    start_time  = 0;

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

NetGame::NetGame()
: objid(0), netid(0), link(0), local_player(0), last_send_time(0), active(true)
{
    netgame = this;
    sim = Sim::GetSim();

    ship_id_key = SHIP_ID_START;
    shot_id_key = SHOT_ID_START;

    if (sim)
    local_player = sim->GetPlayerShip();

    Player* player = Player::GetCurrentPlayer();
    if (player) {
        player_name = player->Name();
        player_pass = player->Password();
    }

    start_time = NetLayer::GetUTC();
}

NetGame::~NetGame()
{
    netgame      = 0;
    local_player = 0;
    players.destroy();

    if (link) {
        double delta     = fabs((double)(NetLayer::GetUTC() - start_time));
        double bandwidth = 10.0 * (link->GetBytesSent() + link->GetBytesRecv()) / delta;
        double recvrate  = link->GetPacketsRecv() / delta;

        Print("NetGame Stats\n-------------\n");
        Print("  packets sent %d\n",          link->GetPacketsSent());
        Print("  packets recv %d\n",          link->GetPacketsRecv());
        Print("  bytes sent   %d\n",          link->GetBytesSent());
        Print("  bytes recv   %d\n",          link->GetBytesRecv());
        Print("  retries      %d\n",          link->GetRetries());
        Print("  drops        %d\n",          link->GetDrops());
        Print("  avg lag      %d msec\n",     link->GetLag());
        Print("  time         %d sec\n",      (int) delta);
        Print("  bandwidth    %d bps\n",      (int) bandwidth);
        Print("  packet rate  %d pps in\n\n", (int) recvrate);

        delete link;
    }
}

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

NetGame*
NetGame::Create()
{
    if (!netgame) {
        if (NetServerConfig::GetInstance())
        netgame = new(__FILE__,__LINE__) NetGameServer;

        else if (NetClientConfig::GetInstance() && NetClientConfig::GetInstance()->GetSelectedServer())
        netgame = new(__FILE__,__LINE__) NetGameClient;
    }

    return netgame;
}

NetGame*
NetGame::GetInstance()
{
    return netgame;
}

DWORD
NetGame::GetObjID() const
{
    if (local_player)
    return local_player->GetObjID();

    return 0;
}

DWORD
NetGame::GetNextObjID(int type)
{
    if (type == SHIP) {
        if (ship_id_key >= SHOT_ID_START)
        ship_id_key = SHIP_ID_START;

        return ship_id_key++;
    }

    else if (type == SHOT) {
        if (shot_id_key >= 0xFFFE)
        shot_id_key = SHOT_ID_START;

        return shot_id_key++;
    }

    return 0;
}

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

void
NetGame::ExecFrame()
{
    Send();
    Recv();
}

void
NetGame::Recv()
{
    NetMsg* msg = link->GetMessage();

    while (msg) {
        if (active) {
            // For Debug Convenience:
            // NetPlayer* player = FindPlayerByNetID(msg->NetID());

            switch (msg->Type()) {
            case NET_JOIN_REQUEST:     DoJoinRequest(msg);     break;
            case NET_JOIN_ANNOUNCE:    DoJoinAnnounce(msg);    break;
            case NET_QUIT_REQUEST:     DoQuitRequest(msg);     break;
            case NET_QUIT_ANNOUNCE:    DoQuitAnnounce(msg);    break;
            case NET_GAME_OVER:        DoGameOver(msg);        break;
            case NET_DISCONNECT:       DoDisconnect(msg);      break;

            case NET_OBJ_LOC:          DoObjLoc(msg);          break;
            case NET_OBJ_DAMAGE:       DoObjDamage(msg);       break;
            case NET_OBJ_KILL:         DoObjKill(msg);         break;
            case NET_OBJ_SPAWN:        DoObjSpawn(msg);        break;
            case NET_OBJ_HYPER:        DoObjHyper(msg);        break;
            case NET_OBJ_TARGET:       DoObjTarget(msg);       break;
            case NET_OBJ_EMCON:        DoObjEmcon(msg);        break;
            case NET_SYS_DAMAGE:       DoSysDamage(msg);       break;
            case NET_SYS_STATUS:       DoSysStatus(msg);       break;

            case NET_ELEM_CREATE:      DoElemCreate(msg);      break;
            case NET_ELEM_REQUEST:     DoElemRequest(msg);     break;
            case NET_SHIP_LAUNCH:      DoShipLaunch(msg);      break;
            case NET_NAV_DATA:         DoNavData(msg);         break;
            case NET_NAV_DELETE:       DoNavDelete(msg);       break;

            case NET_WEP_TRIGGER:      DoWepTrigger(msg);      break;
            case NET_WEP_RELEASE:      DoWepRelease(msg);      break;
            case NET_WEP_DESTROY:      DoWepDestroy(msg);      break;

            case NET_COMM_MESSAGE:     DoCommMsg(msg);         break;
            case NET_CHAT_MESSAGE:     DoChatMsg(msg);         break;
            case NET_SELF_DESTRUCT:    DoSelfDestruct(msg);    break;
            }
        }

        delete msg;
        msg = link->GetMessage();
    }
}

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

void
NetGame::Send()
{
}

int
NetGame::NumPlayers()
{
    if (netgame) {
        int num_players = netgame->players.size();

        if (netgame->local_player)
        num_players++;

        return num_players;
    }

    return 0;
}

NetPlayer*
NetGame::FindPlayerByName(const char* name)
{
    for (int i = 0; i < players.size(); i++) {
        NetPlayer* p = players[i];

        if (!strcmp(p->Name(), name))
        return p;
    }

    return 0;
}

NetPlayer*
NetGame::FindPlayerByNetID(DWORD netid)
{
    for (int i = 0; i < players.size(); i++) {
        NetPlayer* p = players[i];

        if (p->GetNetID() == netid)
        return p;
    }

    return 0;
}

NetPlayer*
NetGame::FindPlayerByObjID(DWORD objid)
{
    for (int i = 0; i < players.size(); i++) {
        NetPlayer* p = players[i];

        if (p->GetObjID() == objid)
        return p;
    }

    return 0;
}

Ship*
NetGame::FindShipByObjID(DWORD objid)
{
    if (sim)
    return sim->FindShipByObjID(objid);

    return 0;
}

Shot*
NetGame::FindShotByObjID(DWORD objid)
{
    if (sim)
    return sim->FindShotByObjID(objid);

    return 0;
}

NetPeer*
NetGame::GetPeer(NetPlayer* player)
{
    if (player && link) {
        return link->FindPeer(player->GetNetID());
    }

    return 0;
}

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

void
NetGame::Respawn(DWORD objid, Ship* spawn)
{
}

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

bool
NetGame::IsNetGame()
{
    return netgame != 0;
}

bool
NetGame::IsNetGameClient()
{
    if (netgame)
    return netgame->IsClient();
    return false;
}

bool
NetGame::IsNetGameServer()
{
    if (netgame)
    return netgame->IsServer();
    return false;
}