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/* Emacs style mode select -*- C++ -*-
*-----------------------------------------------------------------------------
*
*
* PrBoom a Doom port merged with LxDoom and LSDLDoom
* based on BOOM, a modified and improved DOOM engine
* Copyright (C) 1999 by
* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
* Copyright (C) 1999-2000 by
* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* 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;
//
// Startup packet difference
// SG: 4/12/98
// Added so we can send more startup data to synch things like
// bobbing, recoil, etc.
// this is just mapped over the ticcmd_t array when setup packet is sent
//
// Note: the original code takes care of startskill, deathmatch, nomonsters
// respawn, startepisode, startmap
// Note: for phase 1 we need to add monsters_remember, variable_friction,
// weapon_recoil, allow_pushers, over_under, player_bobbing,
// fastparm, demo_insurance, and the rngseed
//Stick all options into bytes so we don't need to mess with bitfields
//WARNING: make sure this doesn't exceed the size of the ticcmds area!
//sizeof(ticcmd_t)*BACKUPTICS
//This is the current length of our extra stuff
//
//killough 5/2/98: this should all be replaced by calls to G_WriteOptions()
//and G_ReadOptions(), which were specifically designed to set up packets.
//By creating a separate struct and functions to read/write the options,
//you now have two functions and data to maintain instead of just one.
//If the array in g_game.c which G_WriteOptions()/G_ReadOptions() operates
//on, is too large (more than sizeof(ticcmd_t)*BACKUPTICS), it can
//either be shortened, or the net code needs to divide it up
//automatically into packets. The STARTUPLEN below is non-portable.
//There's a portable way to do it without having to know the sizes.
#define STARTUPLEN 12
typedef struct
{
byte monsters_remember;
byte variable_friction;
byte weapon_recoil;
byte allow_pushers;
byte over_under;
byte player_bobbing;
byte fastparm;
byte demo_insurance;
unsigned long rngseed;
char filler[sizeof(ticcmd_t)*BACKUPTICS-STARTUPLEN];
} startup_t;
typedef enum {
// Leave space, so low values corresponding to normal netgame setup packets can be ignored
nm_plcolour = 3,
nm_savegamename = 4,
} netmisctype_t;
typedef struct
{
netmisctype_t type;
size_t len;
byte value[sizeof(ticcmd_t)*BACKUPTICS - sizeof(netmisctype_t) - sizeof(size_t)];
} netmisc_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);
// Create any new ticcmds
void D_BuildNewTiccmds (void);
// Broadcasts special packets to other players
// to notify of game exit
void D_QuitNetGame (void);
//? how many ticks to run?
void TryRunTics (void);
// CPhipps - move to header file
void D_InitNetGame (void); // This does the setup
void D_CheckNetGame(void); // This waits for game start
// CPhipps - misc info broadcast
void D_NetSendMisc(netmisctype_t type, size_t len, void* data);
// CPhipps - ask server for a wad file we need
boolean D_NetGetWad(const char* name);
#endif
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