d_net.h

//
// Copyright (C) 1993-1996 Id Software, Inc.
// Copyright (C) 2016-2017 Alexey Khokholov (Nuke.YKT)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// DESCRIPTION:
//	Networking stuff.
//

#ifndef __D_NET__
#define __D_NET__

#include "i_ibm.h"

#include "d_player.h"

//
// Network play related stuff.
// There is a data struct that stores network
//  communication related stuff, and another
//  one that defines the actual packets to
//  be transmitted.
//

#define DOOMCOM_ID 0x12345678l

// Networking and tick handling related.
#define BACKUPTICS 12

//
// Network packet data.
//
typedef struct
{
    byte starttic;
    byte numtics;

} doomdata_t;

typedef struct
{
    // Supposed to be DOOMCOM_ID?
    long id;

    // DOOM executes an int to execute commands.
    short intnum;
    // Communication between DOOM and the driver.
    // Is CMD_SEND or CMD_GET.
    short command;
    // Number of bytes in doomdata to be sent
    short datalength;

    // Info common to all nodes.
    // Flag: 1 = no duplication, 2-5 = dup for slow nets.
    short ticdup;
    // Flag: 1 = deathmatch.
    short deathmatch;
    // Flag: -1 = new game, 0-5 = load savegame
    short savegame;
    short episode; // 1-3
    short map;     // 1-9
    short skill;   // 1-5

    // These are related to the 3-display mode,
    //  in which two drones looking left and right
    //  were used to render two additional views
    //  on two additional computers.
    // Probably not operational anymore.
    // 1 = left, 0 = center, -1 = right
    short angleoffset;
    // 1 = drone
    short drone;

    // The packet data to be sent.
    doomdata_t data;

} doomcom_t;

// Create any new ticcmds and broadcast to other players.
void NetUpdate(void);

//? how many ticks to run?
void TryRunTics(void);

#endif