/*

Copyright (C) 1996-1997 Id Software, Inc.

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.

*/

// host.c -- coordinates spawning and killing of local servers

#include "quakedef.h"

#include <time.h>

#include "libcurl.h"

#ifdef CONFIG_CD

#include "cdaudio.h"

#endif

#include "cl_video.h"

#include "progsvm.h"

#include "csprogs.h"

#include "sv_demo.h"

#include "snd_main.h"

#include "thread.h"

#include "utf8lib.h"

#include "irc.h"

#include "random.h"

/*

A server can always be started, even if the system started out as a client

to a remote system.

A client can NOT be started if the system started as a dedicated server.

Memory is cleared / released when a server or client begins, not when they end.

*/

// how many frames have occurred

// (checked by Host_Error and Host_SaveConfig_f)

int host_framecount = 0;

// LordHavoc: set when quit is executed

qboolean host_shuttingdown = false;

// the accumulated mainloop time since application started (with filtering), without any slowmo or clamping

double realtime;

// the main loop wall time for this frame

double host_dirtytime;

// current client

client_t *host_client;

jmp_buf host_abortframe;

// pretend frames take this amount of time (in seconds), 0 = realtime

cvar_t host_framerate = {0, "host_framerate","0", "locks frame timing to this value in seconds, 0.05 is 20fps for example, note that this can easily run too fast, use cl_maxfps if you want to limit your framerate instead, or sys_ticrate to limit server speed"};

cvar_t cl_maxphysicsframesperserverframe = {0, "cl_maxphysicsframesperserverframe","10", "maximum number of physics frames per server frame"};

// shows time used by certain subsystems

cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};

cvar_t host_maxwait = {0, "host_maxwait","1000", "maximum sleep time requested from the operating system in millisecond. Larger sleeps will be done using multiple host_maxwait length sleeps. Lowering this value will increase CPU load, but may help working around problems with accuracy of sleep times."};

cvar_t cl_minfps = {CVAR_SAVE, "cl_minfps", "40", "minimum fps target - while the rendering performance is below this, it will drift toward lower quality"};

cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "1", "how fast the quality adapts to varying framerate"};

cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};

cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};

cvar_t cl_minfps_qualitymultiply = {CVAR_SAVE, "cl_minfps_qualitymultiply", "0.2", "multiplier for quality changes in quality change per second render time (1 assumes linearity of quality and render time)"};

cvar_t cl_minfps_qualityhysteresis = {CVAR_SAVE, "cl_minfps_qualityhysteresis", "0.05", "reduce all quality increments by this to reduce flickering"};

cvar_t cl_minfps_qualitystepmax = {CVAR_SAVE, "cl_minfps_qualitystepmax", "0.1", "maximum quality change in a single frame"};

cvar_t cl_minfps_force = {0, "cl_minfps_force", "0", "also apply quality reductions in timedemo/capturevideo"};

cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "0", "maximum fps cap, 0 = unlimited, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};

cvar_t cl_maxfps_alwayssleep = {CVAR_SAVE, "cl_maxfps_alwayssleep","1", "gives up some processing time to other applications each frame, value in milliseconds, disabled if cl_maxfps is 0"};

cvar_t cl_maxidlefps = {CVAR_SAVE, "cl_maxidlefps", "20", "maximum fps cap when the game is not the active window (makes cpu time available to other programs"};

cvar_t sys_first_run = {CVAR_SAVE, "sys_first_run", "1", "active when the game is run for the first time"};

cvar_t developer = {CVAR_SAVE, "developer","0", "shows debugging messages and information (recommended for all developers and level designers); the value -1 also suppresses buffering and logging these messages"};

cvar_t developer_extra = {0, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};

cvar_t developer_insane = {0, "developer_insane", "0", "prints huge streams of information about internal workings, entire contents of files being read/written, etc. Not recommended!"};

cvar_t developer_loadfile = {0, "developer_loadfile","0", "prints name and size of every file loaded via the FS_LoadFile function (which is almost everything)"};

cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};

cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};

cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};

cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};

cvar_t sessionid = {CVAR_READONLY, "sessionid", "", "ID of the current session (use the -sessionid parameter to set it); this is always either empty or begins with a dot (.)"};

cvar_t locksession = {0, "locksession", "0", "Lock the session? 0 = no, 1 = yes and abort on failure, 2 = yes and continue on failure"};

/*

================

Host_AbortCurrentFrame

aborts the current host frame and goes on with the next one

================

*/

void Host_AbortCurrentFrame(void) DP_FUNC_NORETURN;

void Host_AbortCurrentFrame(void)

{

// in case we were previously nice, make us mean again

Sys_MakeProcessMean();

longjmp (host_abortframe, 1);

}

/*

================

Host_Error

This shuts down both the client and server

================

*/

void Host_Error (const char *error, ...)

{

static char hosterrorstring1[MAX_INPUTLINE]; // THREAD UNSAFE

static char hosterrorstring2[MAX_INPUTLINE]; // THREAD UNSAFE

static qboolean hosterror = false;

va_list argptr;

// turn off rcon redirect if it was active when the crash occurred

// to prevent loops when it is a networking problem

Con_Rcon_Redirect_Abort();

va_start (argptr,error);

dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);

va_end (argptr);

Con_Printf("Host_Error: %s\n", hosterrorstring1);

// LordHavoc: if crashing very early, or currently shutting down, do

// Sys_Error instead

if (host_framecount < 3 || host_shuttingdown)

Sys_Error ("Host_Error: %s", hosterrorstring1);

if (hosterror)

Sys_Error ("Host_Error: recursively entered (original error was: %s new error is: %s)", hosterrorstring2, hosterrorstring1);

hosterror = true;

strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));

CL_Parse_DumpPacket();

CL_Parse_ErrorCleanUp();

//PR_Crash();

// print out where the crash happened, if it was caused by QC (and do a cleanup)

PRVM_Crash(SVVM_prog);

PRVM_Crash(CLVM_prog);

#ifdef CONFIG_MENU

PRVM_Crash(MVM_prog);

#endif

cl.csqc_loaded = false;

Cvar_SetValueQuick(&csqc_progcrc, -1);

Cvar_SetValueQuick(&csqc_progsize, -1);

SV_LockThreadMutex();

Host_ShutdownServer ();

SV_UnlockThreadMutex();

if (cls.state == ca_dedicated)

Sys_Error ("Host_Error: %s",hosterrorstring2); // dedicated servers exit

CL_Disconnect ();

cls.demonum = -1;

hosterror = false;

Host_AbortCurrentFrame();

}

static void Host_ServerOptions (void)

{

int i;

// general default

svs.maxclients = 8;

// COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8

// COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8

// if no client is in the executable or -dedicated is specified on

// commandline, start a dedicated server

i = COM_CheckParm ("-dedicated");

if (i || !cl_available)

{

cls.state = ca_dedicated;

// check for -dedicated specifying how many players

if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)

svs.maxclients = atoi (com_argv[i+1]);

if (COM_CheckParm ("-listen"))

Con_Printf ("Only one of -dedicated or -listen can be specified\n");

// default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)

Cvar_SetValue("sv_public", 1);

}

else if (cl_available)

{

// client exists and not dedicated, check if -listen is specified

cls.state = ca_disconnected;

i = COM_CheckParm ("-listen");

if (i)

{

// default players unless specified

if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)

svs.maxclients = atoi (com_argv[i+1]);

}

else

{

// default players in some games, singleplayer in most

if (gamemode != GAME_GOODVSBAD2 && !IS_NEXUIZ_DERIVED(gamemode) && gamemode != GAME_BATTLEMECH)

svs.maxclients = 1;

}

}

svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);

svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);

if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)

Cvar_SetValueQuick(&deathmatch, 1);

}

/*

=======================

Host_InitLocal

======================

*/

void Host_SaveConfig_f(void);

void Host_LoadConfig_f(void);

extern cvar_t sv_writepicture_quality;

extern cvar_t r_texture_jpeg_fastpicmip;

static void Host_InitLocal (void)

{

Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");

Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");

Cvar_RegisterVariable (&cl_maxphysicsframesperserverframe);

Cvar_RegisterVariable (&host_framerate);

Cvar_RegisterVariable (&host_speeds);

Cvar_RegisterVariable (&host_maxwait);

Cvar_RegisterVariable (&cl_minfps);

Cvar_RegisterVariable (&cl_minfps_fade);

Cvar_RegisterVariable (&cl_minfps_qualitymax);

Cvar_RegisterVariable (&cl_minfps_qualitymin);

Cvar_RegisterVariable (&cl_minfps_qualitystepmax);

Cvar_RegisterVariable (&cl_minfps_qualityhysteresis);

Cvar_RegisterVariable (&cl_minfps_qualitymultiply);

Cvar_RegisterVariable (&cl_minfps_force);

Cvar_RegisterVariable (&cl_maxfps);

Cvar_RegisterVariable (&cl_maxfps_alwayssleep);

Cvar_RegisterVariable (&cl_maxidlefps);

Cvar_RegisterVariable (&sys_first_run);

Cvar_RegisterVariable (&developer);

Cvar_RegisterVariable (&developer_extra);

Cvar_RegisterVariable (&developer_insane);

Cvar_RegisterVariable (&developer_loadfile);

Cvar_RegisterVariable (&developer_loading);

Cvar_RegisterVariable (&developer_entityparsing);

Cvar_RegisterVariable (&timestamps);

Cvar_RegisterVariable (&timeformat);

Cvar_RegisterVariable (&sv_writepicture_quality);

Cvar_RegisterVariable (&r_texture_jpeg_fastpicmip);

}

/*

===============

Host_SaveConfig_f

Writes key bindings and archived cvars to config.cfg

===============

*/

static void Host_SaveConfig_to(const char *file)

{

qfile_t *f;

Cvar_SetQuick(&sys_first_run, "0");

// dedicated servers initialize the host but don't parse and set the

// config.cfg cvars

// LordHavoc: don't save a config if it crashed in startup

if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))

{

f = FS_OpenRealFile(file, "wb", false);

if (!f)

{

Con_Printf("Couldn't write %s.\n", file);

return;

}

Key_WriteBindings (f);

Cvar_WriteVariables (f);

FS_Close (f);

}

}

void Host_SaveConfig(void)

{

Host_SaveConfig_to(CONFIGFILENAME);

}

void Host_SaveConfig_f(void)

{

const char *file = CONFIGFILENAME;

if(Cmd_Argc() >= 2) {

file = Cmd_Argv(1);

Con_Printf("Saving to %s\n", file);

}

Host_SaveConfig_to(file);

}

static void Host_AddConfigText(void)

{

// set up the default startmap_sp and startmap_dm aliases (mods can

// override these) and then execute the quake.rc startup script

if (gamemode == GAME_NEHAHRA)

Cbuf_InsertText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");

else if (gamemode == GAME_TRANSFUSION)

Cbuf_InsertText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");

else if (gamemode == GAME_TEU)

Cbuf_InsertText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");

else

Cbuf_InsertText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");

}

/*

===============

Host_LoadConfig_f

Resets key bindings and cvars to defaults and then reloads scripts

===============

*/

void Host_LoadConfig_f(void)

{

// reset all cvars, commands and aliases to init values

Cmd_RestoreInitState();

#ifdef CONFIG_MENU

// prepend a menu restart command to execute after the config

Cbuf_InsertText("\nmenu_restart\n");

#endif

// reset cvars to their defaults, and then exec startup scripts again

Host_AddConfigText();

}

/*

=================

SV_ClientPrint

Sends text across to be displayed

FIXME: make this just a stuffed echo?

=================

*/

void SV_ClientPrint(const char *msg)

{

if (host_client->netconnection)

{

MSG_WriteByte(&host_client->netconnection->message, svc_print);

MSG_WriteString(&host_client->netconnection->message, msg);

}

}

/*

=================

SV_ClientPrintf

Sends text across to be displayed

FIXME: make this just a stuffed echo?

=================

*/

void SV_ClientPrintf(const char *fmt, ...)

{

va_list argptr;

char msg[MAX_INPUTLINE];

va_start(argptr,fmt);

dpvsnprintf(msg,sizeof(msg),fmt,argptr);

va_end(argptr);

SV_ClientPrint(msg);

}

/*

=================

SV_BroadcastPrint

Sends text to all active clients

=================

*/

void SV_BroadcastPrint(const char *msg)

{

int i;

client_t *client;

for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)

{

if (client->active && client->netconnection)

{

MSG_WriteByte(&client->netconnection->message, svc_print);

MSG_WriteString(&client->netconnection->message, msg);

}

}

if (sv_echobprint.integer && cls.state == ca_dedicated)

Con_Print(msg);

}

/*

=================

SV_BroadcastPrintf

Sends text to all active clients

=================

*/

void SV_BroadcastPrintf(const char *fmt, ...)

{

va_list argptr;

char msg[MAX_INPUTLINE];

va_start(argptr,fmt);

dpvsnprintf(msg,sizeof(msg),fmt,argptr);

va_end(argptr);

SV_BroadcastPrint(msg);

}

/*

=================

Host_ClientCommands

Send text over to the client to be executed

=================

*/

void Host_ClientCommands(const char *fmt, ...)

{

va_list argptr;

char string[MAX_INPUTLINE];

if (!host_client->netconnection)

return;

va_start(argptr,fmt);

dpvsnprintf(string, sizeof(string), fmt, argptr);

va_end(argptr);

MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);

MSG_WriteString(&host_client->netconnection->message, string);

}

/*

=====================

SV_DropClient

Called when the player is getting totally kicked off the host

if (crash = true), don't bother sending signofs

=====================

*/

void SV_DropClient(qboolean crash)

{

prvm_prog_t *prog = SVVM_prog;

int i;

Con_Printf("Client \"%s\" dropped\n", host_client->name);

SV_StopDemoRecording(host_client);

// make sure edict is not corrupt (from a level change for example)

host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);

if (host_client->netconnection)

{

// tell the client to be gone

if (!crash)

{

// LordHavoc: no opportunity for resending, so use unreliable 3 times

unsigned char bufdata[8];

sizebuf_t buf;

memset(&buf, 0, sizeof(buf));

buf.data = bufdata;

buf.maxsize = sizeof(bufdata);

MSG_WriteByte(&buf, svc_disconnect);

NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, 0, false);

NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, 0, false);

NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, 0, false);

}

}

// call qc ClientDisconnect function

// LordHavoc: don't call QC if server is dead (avoids recursive

// Host_Error in some mods when they run out of edicts)

if (host_client->clientconnectcalled && sv.active && host_client->edict)

{

// call the prog function for removing a client

// this will set the body to a dead frame, among other things

int saveSelf = PRVM_serverglobaledict(self);

host_client->clientconnectcalled = false;

PRVM_serverglobalfloat(time) = sv.time;

PRVM_serverglobaledict(self) = PRVM_EDICT_TO_PROG(host_client->edict);

prog->ExecuteProgram(prog, PRVM_serverfunction(ClientDisconnect), "QC function ClientDisconnect is missing");

PRVM_serverglobaledict(self) = saveSelf;

}

if (host_client->netconnection)

{

// break the net connection

NetConn_Close(host_client->netconnection);

host_client->netconnection = NULL;

}

// if a download is active, close it

if (host_client->download_file)

{

Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);

FS_Close(host_client->download_file);

host_client->download_file = NULL;

host_client->download_name[0] = 0;

host_client->download_expectedposition = 0;

host_client->download_started = false;

}

// remove leaving player from scoreboard

host_client->name[0] = 0;

host_client->colors = 0;

host_client->frags = 0;

// send notification to all clients

// get number of client manually just to make sure we get it right...

i = host_client - svs.clients;

MSG_WriteByte (&sv.reliable_datagram, svc_updatename);

MSG_WriteByte (&sv.reliable_datagram, i);

MSG_WriteString (&sv.reliable_datagram, host_client->name);

MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);

MSG_WriteByte (&sv.reliable_datagram, i);

MSG_WriteByte (&sv.reliable_datagram, host_client->colors);

MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);

MSG_WriteByte (&sv.reliable_datagram, i);

MSG_WriteShort (&sv.reliable_datagram, host_client->frags);

// free the client now

if (host_client->entitydatabase)

EntityFrame_FreeDatabase(host_client->entitydatabase);

if (host_client->entitydatabase4)

EntityFrame4_FreeDatabase(host_client->entitydatabase4);

if (host_client->entitydatabase5)

EntityFrame5_FreeDatabase(host_client->entitydatabase5);

if (sv.active)

{

// clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags

PRVM_ED_ClearEdict(prog, host_client->edict);

}

// clear the client struct (this sets active to false)

memset(host_client, 0, sizeof(*host_client));

// update server listing on the master because player count changed

// (which the master uses for filtering empty/full servers)

NetConn_Heartbeat(1);

if (sv.loadgame)

{

for (i = 0;i < svs.maxclients;i++)

if (svs.clients[i].active && !svs.clients[i].spawned)

break;

if (i == svs.maxclients)

{

Con_Printf("Loaded game, everyone rejoined - unpausing\n");

sv.paused = sv.loadgame = false; // we're basically done with loading now

}

}

}

/*

==================

Host_ShutdownServer

This only happens at the end of a game, not between levels

==================

*/

void Host_ShutdownServer(void)

{

prvm_prog_t *prog = SVVM_prog;

int i;

Con_DPrintf("Host_ShutdownServer\n");

if (!sv.active)

return;

NetConn_Heartbeat(2);

NetConn_Heartbeat(2);

// make sure all the clients know we're disconnecting

World_End(&sv.world);

if(prog->loaded)

{

if(PRVM_serverfunction(SV_Shutdown))

{

func_t s = PRVM_serverfunction(SV_Shutdown);

PRVM_serverglobalfloat(time) = sv.time;

PRVM_serverfunction(SV_Shutdown) = 0; // prevent it from getting called again

prog->ExecuteProgram(prog, s,"SV_Shutdown() required");

}

}

for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)

if (host_client->active)

SV_DropClient(false); // server shutdown

NetConn_CloseServerPorts();

sv.active = false;

//

// clear structures

//

memset(&sv, 0, sizeof(sv));

memset(svs.clients, 0, svs.maxclients*sizeof(client_t));

cl.islocalgame = false;

}

//============================================================================

/*

===================

Host_GetConsoleCommands

Add them exactly as if they had been typed at the console

===================

*/

static void Host_GetConsoleCommands (void)

{

char *cmd;

while (1)

{

cmd = Sys_ConsoleInput ();

if (!cmd)

break;

Cbuf_AddText (cmd);

}

}

/*

==================

Host_TimeReport

Returns a time report string, for example for

==================

*/

const char *Host_TimingReport(char *buf, size_t buflen)

{

return va(buf, buflen, "%.1f%% CPU, %.2f%% lost, offset avg %.1fms, max %.1fms, sdev %.1fms", svs.perf_cpuload * 100, svs.perf_lost * 100, svs.perf_offset_avg * 1000, svs.perf_offset_max * 1000, svs.perf_offset_sdev * 1000);

}

#include "timedemo.h"

/*

==================

Host_Frame

Runs all active servers

==================

*/

static void Host_Init(void);

void Host_Main(void)

{

double time1 = 0;

double time2 = 0;

double time3 = 0;

double cl_timer = 0, sv_timer = 0;

double clframetime, deltacleantime, olddirtytime, dirtytime;

double wait;

int pass1, pass2, pass3, i;

char vabuf[1024];

qboolean playing;

Host_Init();

realtime = 0;

host_dirtytime = Sys_DirtyTime();

for (;;)

{

if (setjmp(host_abortframe))

{

SCR_ClearLoadingScreen(false);

continue; // something bad happened, or the server disconnected

}

olddirtytime = host_dirtytime;

dirtytime = Sys_DirtyTime();

deltacleantime = dirtytime - olddirtytime;

if (deltacleantime < 0)

{

// warn if it's significant

if (deltacleantime < -0.01)

Con_Printf("Host_Mingled: time stepped backwards (went from %f to %f, difference %f)\n", olddirtytime, dirtytime, deltacleantime);

deltacleantime = 0;

}

else if (deltacleantime >= 1800)

{

Con_Printf("Host_Mingled: time stepped forward (went from %f to %f, difference %f)\n", olddirtytime, dirtytime, deltacleantime);

deltacleantime = 0;

}

realtime += deltacleantime;

host_dirtytime = dirtytime;

cl_timer += deltacleantime;

sv_timer += deltacleantime;

if (!svs.threaded)

{

svs.perf_acc_realtime += deltacleantime;

// Look for clients who have spawned

playing = false;

for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)

if(host_client->begun)

if(host_client->netconnection)

playing = true;

if(sv.time < 10)

{

// don't accumulate time for the first 10 seconds of a match

// so things can settle

svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;

}

else if(svs.perf_acc_realtime > 5)

{

svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;

svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;

if(svs.perf_acc_offset_samples > 0)

{

svs.perf_offset_max = svs.perf_acc_offset_max;

svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;

svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);

}

if(svs.perf_lost > 0 && developer_extra.integer)

if(playing) // only complain if anyone is looking

Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport(vabuf, sizeof(vabuf)));

svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;

}

}

if (slowmo.value < 0.00001 && slowmo.value != 0)

Cvar_SetValue("slowmo", 0);

if (host_framerate.value < 0.00001 && host_framerate.value != 0)

Cvar_SetValue("host_framerate", 0);

// keep the random time dependent, but not when playing demos/benchmarking

if(!*sv_random_seed.string && !cls.demoplayback) {

xrand();

rand();

}

// get new key events

Key_EventQueue_Unblock();

SndSys_SendKeyEvents();

Sys_SendKeyEvents();

NetConn_UpdateSockets();

Log_DestBuffer_Flush();

// receive packets on each main loop iteration, as the main loop may

// be undersleeping due to select() detecting a new packet

if (sv.active && !svs.threaded)

NetConn_ServerFrame();

Curl_Run();

// check for commands typed to the host

Host_GetConsoleCommands();

// when a server is running we only execute console commands on server frames

// (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)

// otherwise we execute them on client frames

if (sv.active ? sv_timer > 0 : cl_timer > 0)

{

// process console commands

// R_TimeReport("preconsole");

CL_VM_PreventInformationLeaks();

Cbuf_Frame();

// R_TimeReport("console");

}

//Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);

// if the accumulators haven't become positive yet, wait a while

if (cls.state == ca_dedicated)

wait = sv_timer * -1000000.0;

else if (!sv.active || svs.threaded)

wait = cl_timer * -1000000.0;

else

wait = max(cl_timer, sv_timer) * -1000000.0;

if (!cls.timedemo && wait >= 1)

{

double time0, delta;

if(host_maxwait.value <= 0)

wait = min(wait, 1000000.0);

else

wait = min(wait, host_maxwait.value * 1000.0);

if(wait < 1)

wait = 1; // because we cast to int

time0 = Sys_DirtyTime();

if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer && !svs.threaded) {

NetConn_SleepMicroseconds((int)wait);

if (cls.state != ca_dedicated)

NetConn_ClientFrame(); // helps server browser get good ping values

// TODO can we do the same for ServerFrame? Probably not.

}

else

Sys_Sleep((int)wait);

delta = Sys_DirtyTime() - time0;

if (delta < 0 || delta >= 1800) delta = 0;

if (!svs.threaded)

svs.perf_acc_sleeptime += delta;

// R_TimeReport("sleep");

continue;

}

// limit the frametime steps to no more than 100ms each

if (cl_timer > 0.1)

cl_timer = 0.1;

if (sv_timer > 0.1)

{

if (!svs.threaded)

svs.perf_acc_lost += (sv_timer - 0.1);

sv_timer = 0.1;

}

R_TimeReport("---");

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

//

// server operations

//

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

// limit the frametime steps to no more than 100ms each

if (sv.active && sv_timer > 0 && !svs.threaded)

{

// execute one or more server frames, with an upper limit on how much

// execution time to spend on server frames to avoid freezing the game if

// the server is overloaded, this execution time limit means the game will

// slow down if the server is taking too long.

int framecount, framelimit = 1;

double advancetime, aborttime = 0;

float offset;

prvm_prog_t *prog = SVVM_prog;

// run the world state

// don't allow simulation to run too fast or too slow or logic glitches can occur

// stop running server frames if the wall time reaches this value

if (sys_ticrate.value <= 0)

advancetime = sv_timer;

else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)

{

// synchronize to the client frametime, but no less than 10ms and no more than 100ms

advancetime = bound(0.01, cl_timer, 0.1);

}

else

{

advancetime = sys_ticrate.value;

// listen servers can run multiple server frames per client frame

framelimit = cl_maxphysicsframesperserverframe.integer;

aborttime = Sys_DirtyTime() + 0.1;

}

if(slowmo.value > 0 && slowmo.value < 1)

advancetime = min(advancetime, 0.1 / slowmo.value);

else

advancetime = min(advancetime, 0.1);

if(advancetime > 0)

{

offset = Sys_DirtyTime() - dirtytime;if (offset < 0 || offset >= 1800) offset = 0;

offset += sv_timer;

++svs.perf_acc_offset_samples;

svs.perf_acc_offset += offset;

svs.perf_acc_offset_squared += offset * offset;

if(svs.perf_acc_offset_max < offset)

svs.perf_acc_offset_max = offset;

}

// only advance time if not paused

// the game also pauses in singleplayer when menu or console is used

sv.frametime = advancetime * slowmo.value;

if (host_framerate.value)

sv.frametime = host_framerate.value;

if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))

sv.frametime = 0;

for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)

{

sv_timer -= advancetime;

// move things around and think unless paused

if (sv.frametime)

SV_Physics();

// if this server frame took too long, break out of the loop

if (framelimit > 1 && Sys_DirtyTime() >= aborttime)

break;

}

R_TimeReport("serverphysics");

// send all messages to the clients

SV_SendClientMessages();

if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {

prog->globals.fp[OFS_PARM0] = realtime - sv.pausedstart;

PRVM_serverglobalfloat(time) = sv.time;

prog->ExecuteProgram(prog, PRVM_serverfunction(SV_PausedTic), "QC function SV_PausedTic is missing");

}

// send an heartbeat if enough time has passed since the last one

NetConn_Heartbeat(0);

R_TimeReport("servernetwork");

}

else if (!svs.threaded)

{

// don't let r_speeds display jump around

R_TimeReport("serverphysics");

R_TimeReport("servernetwork");

}

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

//

// client operations

//

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

if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))

{

if(cls.td_frames < -2 || cls.td_frames > 0) {

TimeDemo_BeginFrame(&tdstats);

}

R_TimeReport("---");

Collision_Cache_NewFrame();

R_TimeReport("photoncache");

// decide the simulation time

if (cls.capturevideo.active)

{

//***

if (cls.capturevideo.realtime)

clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);

else

{

clframetime = 1.0 / cls.capturevideo.framerate;

cl.realframetime = max(cl_timer, clframetime);

}

}

else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)

{

clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);

// when running slow, we need to sleep to keep input responsive

wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);

if (wait > 0)

Sys_Sleep((int)wait);

}

else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)

clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);

else

clframetime = cl.realframetime = cl_timer;

// apply slowmo scaling

clframetime *= cl.movevars_timescale;

// scale playback speed of demos by slowmo cvar

if (cls.demoplayback)

{

clframetime *= slowmo.value;

// if demo playback is paused, don't advance time at all

if (cls.demopaused)

clframetime = 0;

}

else

{

// host_framerate overrides all else

if (host_framerate.value)

clframetime = host_framerate.value;

if (cl.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))

clframetime = 0;

}

if (cls.timedemo)

clframetime = cl.realframetime = cl_timer;