ref: 8d9a94a66ed80605cb21be1a091a9b6fe02bd023
dir: /sys/src/games/doom/d_net.h/
// 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
//-----------------------------------------------------------------------------
//
// $Log:$
//
//-----------------------------------------------------------------------------