ref: ab56f8d2ce035f9b6f165f6d63dc031f069d6b45
dir: /src/doom/d_net.c/
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005-2014 Simon Howard
//
// 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:
// DOOM Network game communication and protocol,
// all OS independend parts.
//
#include <stdlib.h>
#include "d_main.h"
#include "m_argv.h"
#include "m_menu.h"
#include "m_misc.h"
#include "i_system.h"
#include "i_timer.h"
#include "i_video.h"
#include "g_game.h"
#include "doomdef.h"
#include "doomstat.h"
#include "w_checksum.h"
#include "w_wad.h"
#include "deh_main.h"
#include "d_loop.h"
ticcmd_t *netcmds;
// Called when a player leaves the game
static void PlayerQuitGame(player_t *player)
{
static char exitmsg[80];
unsigned int player_num;
player_num = player - players;
// Do this the same way as Vanilla Doom does, to allow dehacked
// replacements of this message
M_StringCopy(exitmsg, DEH_String("Player 1 left the game"),
sizeof(exitmsg));
exitmsg[7] += player_num;
playeringame[player_num] = false;
players[consoleplayer].message = exitmsg;
// TODO: check if it is sensible to do this:
if (demorecording)
{
G_CheckDemoStatus ();
}
}
static void RunTic(ticcmd_t *cmds, boolean *ingame)
{
extern boolean advancedemo;
unsigned int i;
// Check for player quits.
for (i = 0; i < MAXPLAYERS; ++i)
{
if (!demoplayback && playeringame[i] && !ingame[i])
{
PlayerQuitGame(&players[i]);
}
}
netcmds = cmds;
// check that there are players in the game. if not, we cannot
// run a tic.
if (advancedemo)
D_DoAdvanceDemo ();
G_Ticker ();
}
static loop_interface_t doom_loop_interface = {
D_ProcessEvents,
G_BuildTiccmd,
RunTic,
M_Ticker
};
// Load game settings from the specified structure and
// set global variables.
static void LoadGameSettings(net_gamesettings_t *settings)
{
unsigned int i;
deathmatch = settings->deathmatch;
startepisode = settings->episode;
startmap = settings->map;
startskill = settings->skill;
startloadgame = settings->loadgame;
lowres_turn = settings->lowres_turn;
nomonsters = settings->nomonsters;
fastparm = settings->fast_monsters;
respawnparm = settings->respawn_monsters;
timelimit = settings->timelimit;
consoleplayer = settings->consoleplayer;
if (lowres_turn)
{
printf("NOTE: Turning resolution is reduced; this is probably "
"because there is a client recording a Vanilla demo.\n");
}
for (i = 0; i < MAXPLAYERS; ++i)
{
playeringame[i] = i < settings->num_players;
}
}
// Save the game settings from global variables to the specified
// game settings structure.
static void SaveGameSettings(net_gamesettings_t *settings)
{
// Fill in game settings structure with appropriate parameters
// for the new game
settings->deathmatch = deathmatch;
settings->episode = startepisode;
settings->map = startmap;
settings->skill = startskill;
settings->loadgame = startloadgame;
settings->gameversion = gameversion;
settings->nomonsters = nomonsters;
settings->fast_monsters = fastparm;
settings->respawn_monsters = respawnparm;
settings->timelimit = timelimit;
settings->lowres_turn = (M_ParmExists("-record")
&& !M_ParmExists("-longtics"))
|| M_ParmExists("-shorttics");
}
static void InitConnectData(net_connect_data_t *connect_data)
{
boolean shorttics;
connect_data->max_players = MAXPLAYERS;
connect_data->drone = false;
//!
// @category net
//
// Run as the left screen in three screen mode.
//
if (M_CheckParm("-left") > 0)
{
viewangleoffset = ANG90;
connect_data->drone = true;
}
//!
// @category net
//
// Run as the right screen in three screen mode.
//
if (M_CheckParm("-right") > 0)
{
viewangleoffset = ANG270;
connect_data->drone = true;
}
//
// Connect data
//
// Game type fields:
connect_data->gamemode = gamemode;
connect_data->gamemission = gamemission;
//!
// @category demo
//
// Play with low turning resolution to emulate demo recording.
//
shorttics = M_ParmExists("-shorttics");
// Are we recording a demo? Possibly set lowres turn mode
connect_data->lowres_turn = (M_ParmExists("-record")
&& !M_ParmExists("-longtics"))
|| shorttics;
// Read checksums of our WAD directory and dehacked information
W_Checksum(connect_data->wad_sha1sum);
DEH_Checksum(connect_data->deh_sha1sum);
// Are we playing with the Freedoom IWAD?
connect_data->is_freedoom = W_CheckNumForName("FREEDOOM") >= 0;
}
void D_ConnectNetGame(void)
{
net_connect_data_t connect_data;
InitConnectData(&connect_data);
netgame = D_InitNetGame(&connect_data);
//!
// @category net
//
// Start the game playing as though in a netgame with a single
// player. This can also be used to play back single player netgame
// demos.
//
if (M_CheckParm("-solo-net") > 0)
{
netgame = true;
}
}
//
// D_CheckNetGame
// Works out player numbers among the net participants
//
void D_CheckNetGame (void)
{
net_gamesettings_t settings;
if (netgame)
{
autostart = true;
}
D_RegisterLoopCallbacks(&doom_loop_interface);
SaveGameSettings(&settings);
D_StartNetGame(&settings, NULL);
LoadGameSettings(&settings);
DEH_printf("startskill %i deathmatch: %i startmap: %i startepisode: %i\n",
startskill, deathmatch, startmap, startepisode);
DEH_printf("player %i of %i (%i nodes)\n",
consoleplayer+1, settings.num_players, settings.num_players);
// Show players here; the server might have specified a time limit
if (timelimit > 0 && deathmatch)
{
// Gross hack to work like Vanilla:
if (timelimit == 20 && M_CheckParm("-avg"))
{
DEH_printf("Austin Virtual Gaming: Levels will end "
"after 20 minutes\n");
}
else
{
DEH_printf("Levels will end after %d minute", timelimit);
if (timelimit > 1)
printf("s");
printf(".\n");
}
}
}