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// Emacs style mode select   -*- C++ -*-

//-----------------------------------------------------------------------------

//

// $Id:$

//

// Copyright (C) 1993-1996 by id Software, Inc.

//

// This source is available for distribution and/or modification

// only under the terms of the DOOM Source Code License as

// published by id Software. All rights reserved.

//

// The source is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License

// for more details.

//

// DESCRIPTION:

//	Networking stuff.

//

//-----------------------------------------------------------------------------

#ifndef __D_NET__

#define __D_NET__

#include "d_player.h"

#ifdef __GNUG__

#pragma interface

#endif

//

// 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

// Max computers/players in a game.

#define MAXNETNODES		8

// Networking and tick handling related.

#define BACKUPTICS		12

typedef enum

{

    CMD_SEND	= 1,

    CMD_GET	= 2

} command_t;

//

// Network packet data.

//

typedef struct

{

    // High bit is retransmit request.

    unsigned		checksum;

    // Only valid if NCMD_RETRANSMIT.

    byte		retransmitfrom;

    byte		starttic;

    byte		player;

    byte		numtics;

    ticcmd_t		cmds[BACKUPTICS];

} 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;

    // Is dest for send, set by get (-1 = no packet).

    short		remotenode;

    // Number of bytes in doomdata to be sent

    short		datalength;

    // Info common to all nodes.

    // Console is allways node 0.

    short		numnodes;

    // Flag: 1 = no duplication, 2-5 = dup for slow nets.

    short		ticdup;

    // Flag: 1 = send a backup tic in every packet.

    short		extratics;

    // 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

    // Info specific to this node.

    short		consoleplayer;

    short		numplayers;

    // 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);

// Broadcasts special packets to other players

//  to notify of game exit

void D_QuitNetGame (void);

//? how many ticks to run?

void TryRunTics (void);

#endif

//-----------------------------------------------------------------------------

//

// $Log:$

//

//-----------------------------------------------------------------------------