host.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // host.c -- coordinates spawning and killing of local servers
  21
  22 #include "quakedef.h"
  23
  24 #include <time.h>
  25 #include "libcurl.h"
  26 #include "cdaudio.h"
  27 #include "cl_gecko.h"
  28 #include "cl_video.h"
  29 #include "progsvm.h"
  30 #include "csprogs.h"
  31 #include "sv_demo.h"
  32
  33 /*
  34
  35 A server can always be started, even if the system started out as a client
  36 to a remote system.
  37
  38 A client can NOT be started if the system started as a dedicated server.
  39
  40 Memory is cleared / released when a server or client begins, not when they end.
  41
  42 */
  43
  44 // how many frames have occurred
  45 // (checked by Host_Error and Host_SaveConfig_f)
  46 int host_framecount = 0;
  47 // LordHavoc: set when quit is executed
  48 qboolean host_shuttingdown = false;
  49
  50 // the real time since application started, without any slowmo or clamping
  51 double realtime;
  52
  53 // current client
  54 client_t *host_client;
  55
  56 jmp_buf host_abortframe;
  57 double host_starttime = 0;
  58
  59 // pretend frames take this amount of time (in seconds), 0 = realtime
  60 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"};
  61 // shows time used by certain subsystems
  62 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  63 cvar_t host_sleep = {0, "host_sleep","1", "gives up some processing time to other applications each frame, value in milliseconds"};
  64 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"};
  65 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
  66 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
  67 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
  68 cvar_t cl_minfps_qualitypower = {CVAR_SAVE, "cl_minfps_qualitypower", "4", "raises quality value to a power of itself, higher values make quality drop more sharply in relation to framerate"};
  69 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
  70 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)"};
  71 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"};
  72
  73 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  74 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)"};
  75 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
  76 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  77
  78 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  79 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  80
  81 /*
  82 ================
  83 Host_AbortCurrentFrame
  84
  85 aborts the current host frame and goes on with the next one
  86 ================
  87 */
  88 void Host_AbortCurrentFrame(void)
  89 {
  90         longjmp (host_abortframe, 1);
  91 }
  92
  93 /*
  94 ================
  95 Host_Error
  96
  97 This shuts down both the client and server
  98 ================
  99 */
 100 void Host_Error (const char *error, ...)
 101 {
 102         static char hosterrorstring1[MAX_INPUTLINE];
 103         static char hosterrorstring2[MAX_INPUTLINE];
 104         static qboolean hosterror = false;
 105         va_list argptr;
 106
 107         // turn off rcon redirect if it was active when the crash occurred
 108         // to prevent loops when it is a networking problem
 109         Con_Rcon_Redirect_Abort();
 110
 111         va_start (argptr,error);
 112         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 113         va_end (argptr);
 114
 115         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 116
 117         // LordHavoc: if crashing very early, or currently shutting down, do
 118         // Sys_Error instead
 119         if (host_framecount < 3 || host_shuttingdown)
 120                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 121
 122         if (hosterror)
 123                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 124         hosterror = true;
 125
 126         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 127
 128         CL_Parse_DumpPacket();
 129
 130         CL_Parse_ErrorCleanUp();
 131
 132         //PR_Crash();
 133
 134         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 135         PRVM_Crash();
 136
 137
 138         Host_ShutdownServer ();
 139
 140         if (cls.state == ca_dedicated)
 141                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 142
 143         CL_Disconnect ();
 144         cls.demonum = -1;
 145
 146         hosterror = false;
 147
 148         Host_AbortCurrentFrame();
 149 }
 150
 151 void Host_ServerOptions (void)
 152 {
 153         int i;
 154
 155         // general default
 156         svs.maxclients = 8;
 157
 158 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 159 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 160         // if no client is in the executable or -dedicated is specified on
 161         // commandline, start a dedicated server
 162         i = COM_CheckParm ("-dedicated");
 163         if (i || !cl_available)
 164         {
 165                 cls.state = ca_dedicated;
 166                 // check for -dedicated specifying how many players
 167                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 168                         svs.maxclients = atoi (com_argv[i+1]);
 169                 if (COM_CheckParm ("-listen"))
 170                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 171                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 172                 Cvar_SetValue("sv_public", 1);
 173         }
 174         else if (cl_available)
 175         {
 176                 // client exists and not dedicated, check if -listen is specified
 177                 cls.state = ca_disconnected;
 178                 i = COM_CheckParm ("-listen");
 179                 if (i)
 180                 {
 181                         // default players unless specified
 182                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 183                                 svs.maxclients = atoi (com_argv[i+1]);
 184                 }
 185                 else
 186                 {
 187                         // default players in some games, singleplayer in most
 188                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 189                                 svs.maxclients = 1;
 190                 }
 191         }
 192
 193         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
 194
 195         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 196
 197         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 198                 Cvar_SetValueQuick(&deathmatch, 1);
 199 }
 200
 201 /*
 202 =======================
 203 Host_InitLocal
 204 ======================
 205 */
 206 void Host_SaveConfig_f(void);
 207 void Host_LoadConfig_f(void);
 208 extern cvar_t sv_writepicture_quality;
 209 static void Host_InitLocal (void)
 210 {
 211         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 212         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 213
 214         Cvar_RegisterVariable (&host_framerate);
 215         Cvar_RegisterVariable (&host_speeds);
 216         Cvar_RegisterVariable (&host_sleep);
 217         Cvar_RegisterVariable (&cl_minfps);
 218         Cvar_RegisterVariable (&cl_minfps_fade);
 219         Cvar_RegisterVariable (&cl_minfps_qualitymax);
 220         Cvar_RegisterVariable (&cl_minfps_qualitymin);
 221         Cvar_RegisterVariable (&cl_minfps_qualitypower);
 222         Cvar_RegisterVariable (&cl_minfps_qualityscale);
 223         Cvar_RegisterVariable (&cl_maxfps);
 224         Cvar_RegisterVariable (&cl_maxidlefps);
 225
 226         Cvar_RegisterVariable (&developer);
 227         Cvar_RegisterVariable (&developer_loadfile);
 228         Cvar_RegisterVariable (&developer_loading);
 229         Cvar_RegisterVariable (&developer_entityparsing);
 230
 231         Cvar_RegisterVariable (&timestamps);
 232         Cvar_RegisterVariable (&timeformat);
 233
 234         Cvar_RegisterVariable (&sv_writepicture_quality);
 235 }
 236
 237
 238 /*
 239 ===============
 240 Host_SaveConfig_f
 241
 242 Writes key bindings and archived cvars to config.cfg
 243 ===============
 244 */
 245 void Host_SaveConfig_to(const char *file)
 246 {
 247         qfile_t *f;
 248
 249 // dedicated servers initialize the host but don't parse and set the
 250 // config.cfg cvars
 251         // LordHavoc: don't save a config if it crashed in startup
 252         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 253         {
 254                 f = FS_OpenRealFile(file, "wb", false);
 255                 if (!f)
 256                 {
 257                         Con_Printf("Couldn't write %s.\n", file);
 258                         return;
 259                 }
 260
 261                 Key_WriteBindings (f);
 262                 Cvar_WriteVariables (f);
 263
 264                 FS_Close (f);
 265         }
 266 }
 267 void Host_SaveConfig(void)
 268 {
 269         Host_SaveConfig_to("config.cfg");
 270 }
 271 void Host_SaveConfig_f(void)
 272 {
 273         const char *file = "config.cfg";
 274
 275         if(Cmd_Argc() >= 2) {
 276                 file = Cmd_Argv(1);
 277                 Con_Printf("Saving to %s\n", file);
 278         }
 279
 280         Host_SaveConfig_to(file);
 281 }
 282
 283 /*
 284 ===============
 285 Host_LoadConfig_f
 286
 287 Resets key bindings and cvars to defaults and then reloads scripts
 288 ===============
 289 */
 290 void Host_LoadConfig_f(void)
 291 {
 292         // unlock the cvar default strings so they can be updated by the new default.cfg
 293         Cvar_UnlockDefaults();
 294         // reset cvars to their defaults, and then exec startup scripts again
 295         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 296 }
 297
 298 /*
 299 =================
 300 SV_ClientPrint
 301
 302 Sends text across to be displayed
 303 FIXME: make this just a stuffed echo?
 304 =================
 305 */
 306 void SV_ClientPrint(const char *msg)
 307 {
 308         if (host_client->netconnection)
 309         {
 310                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 311                 MSG_WriteString(&host_client->netconnection->message, msg);
 312         }
 313 }
 314
 315 /*
 316 =================
 317 SV_ClientPrintf
 318
 319 Sends text across to be displayed
 320 FIXME: make this just a stuffed echo?
 321 =================
 322 */
 323 void SV_ClientPrintf(const char *fmt, ...)
 324 {
 325         va_list argptr;
 326         char msg[MAX_INPUTLINE];
 327
 328         va_start(argptr,fmt);
 329         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 330         va_end(argptr);
 331
 332         SV_ClientPrint(msg);
 333 }
 334
 335 /*
 336 =================
 337 SV_BroadcastPrint
 338
 339 Sends text to all active clients
 340 =================
 341 */
 342 void SV_BroadcastPrint(const char *msg)
 343 {
 344         int i;
 345         client_t *client;
 346
 347         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 348         {
 349                 if (client->active && client->netconnection)
 350                 {
 351                         MSG_WriteByte(&client->netconnection->message, svc_print);
 352                         MSG_WriteString(&client->netconnection->message, msg);
 353                 }
 354         }
 355
 356         if (sv_echobprint.integer && cls.state == ca_dedicated)
 357                 Con_Print(msg);
 358 }
 359
 360 /*
 361 =================
 362 SV_BroadcastPrintf
 363
 364 Sends text to all active clients
 365 =================
 366 */
 367 void SV_BroadcastPrintf(const char *fmt, ...)
 368 {
 369         va_list argptr;
 370         char msg[MAX_INPUTLINE];
 371
 372         va_start(argptr,fmt);
 373         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 374         va_end(argptr);
 375
 376         SV_BroadcastPrint(msg);
 377 }
 378
 379 /*
 380 =================
 381 Host_ClientCommands
 382
 383 Send text over to the client to be executed
 384 =================
 385 */
 386 void Host_ClientCommands(const char *fmt, ...)
 387 {
 388         va_list argptr;
 389         char string[MAX_INPUTLINE];
 390
 391         if (!host_client->netconnection)
 392                 return;
 393
 394         va_start(argptr,fmt);
 395         dpvsnprintf(string, sizeof(string), fmt, argptr);
 396         va_end(argptr);
 397
 398         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 399         MSG_WriteString(&host_client->netconnection->message, string);
 400 }
 401
 402 /*
 403 =====================
 404 SV_DropClient
 405
 406 Called when the player is getting totally kicked off the host
 407 if (crash = true), don't bother sending signofs
 408 =====================
 409 */
 410 void SV_DropClient(qboolean crash)
 411 {
 412         int i;
 413         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 414
 415         SV_StopDemoRecording(host_client);
 416
 417         // make sure edict is not corrupt (from a level change for example)
 418         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 419
 420         if (host_client->netconnection)
 421         {
 422                 // free the client (the body stays around)
 423                 if (!crash)
 424                 {
 425                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 426                         unsigned char bufdata[8];
 427                         sizebuf_t buf;
 428                         memset(&buf, 0, sizeof(buf));
 429                         buf.data = bufdata;
 430                         buf.maxsize = sizeof(bufdata);
 431                         MSG_WriteByte(&buf, svc_disconnect);
 432                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 433                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 434                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 435                 }
 436                 // break the net connection
 437                 NetConn_Close(host_client->netconnection);
 438                 host_client->netconnection = NULL;
 439         }
 440
 441         // call qc ClientDisconnect function
 442         // LordHavoc: don't call QC if server is dead (avoids recursive
 443         // Host_Error in some mods when they run out of edicts)
 444         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 445         {
 446                 // call the prog function for removing a client
 447                 // this will set the body to a dead frame, among other things
 448                 int saveSelf = prog->globals.server->self;
 449                 host_client->clientconnectcalled = false;
 450                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 451                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 452                 prog->globals.server->self = saveSelf;
 453         }
 454
 455         // if a download is active, close it
 456         if (host_client->download_file)
 457         {
 458                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 459                 FS_Close(host_client->download_file);
 460                 host_client->download_file = NULL;
 461                 host_client->download_name[0] = 0;
 462                 host_client->download_expectedposition = 0;
 463                 host_client->download_started = false;
 464         }
 465
 466         // remove leaving player from scoreboard
 467         host_client->name[0] = 0;
 468         host_client->colors = 0;
 469         host_client->frags = 0;
 470         // send notification to all clients
 471         // get number of client manually just to make sure we get it right...
 472         i = host_client - svs.clients;
 473         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 474         MSG_WriteByte (&sv.reliable_datagram, i);
 475         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 476         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 477         MSG_WriteByte (&sv.reliable_datagram, i);
 478         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 479         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 480         MSG_WriteByte (&sv.reliable_datagram, i);
 481         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 482
 483         // free the client now
 484         if (host_client->entitydatabase)
 485                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 486         if (host_client->entitydatabase4)
 487                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 488         if (host_client->entitydatabase5)
 489                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 490
 491         if (sv.active)
 492         {
 493                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 494                 PRVM_ED_ClearEdict(host_client->edict);
 495         }
 496
 497         // clear the client struct (this sets active to false)
 498         memset(host_client, 0, sizeof(*host_client));
 499
 500         // update server listing on the master because player count changed
 501         // (which the master uses for filtering empty/full servers)
 502         NetConn_Heartbeat(1);
 503
 504         if (sv.loadgame)
 505         {
 506                 for (i = 0;i < svs.maxclients;i++)
 507                         if (svs.clients[i].active && !svs.clients[i].spawned)
 508                                 break;
 509                 if (i == svs.maxclients)
 510                 {
 511                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 512                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 513                 }
 514         }
 515 }
 516
 517 /*
 518 ==================
 519 Host_ShutdownServer
 520
 521 This only happens at the end of a game, not between levels
 522 ==================
 523 */
 524 void Host_ShutdownServer(void)
 525 {
 526         int i;
 527
 528         Con_DPrintf("Host_ShutdownServer\n");
 529
 530         if (!sv.active)
 531                 return;
 532
 533         NetConn_Heartbeat(2);
 534         NetConn_Heartbeat(2);
 535
 536 // make sure all the clients know we're disconnecting
 537         SV_VM_Begin();
 538         if(prog->loaded)
 539                 if(prog->funcoffsets.SV_Shutdown)
 540                 {
 541                         func_t s = prog->funcoffsets.SV_Shutdown;
 542                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
 543                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
 544                 }
 545         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 546                 if (host_client->active)
 547                         SV_DropClient(false); // server shutdown
 548         SV_VM_End();
 549
 550         NetConn_CloseServerPorts();
 551
 552         if(sv.csqc_progdata)
 553         {
 554                 Con_DPrintf("Unloading CSQC data.\n");
 555                 Mem_Free(sv.csqc_progdata);
 556                 if(sv.csqc_progdata_deflated)
 557                         Mem_Free(sv.csqc_progdata_deflated);
 558         }
 559
 560         sv.active = false;
 561 //
 562 // clear structures
 563 //
 564         memset(&sv, 0, sizeof(sv));
 565         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 566 }
 567
 568
 569 //============================================================================
 570
 571 /*
 572 ===================
 573 Host_GetConsoleCommands
 574
 575 Add them exactly as if they had been typed at the console
 576 ===================
 577 */
 578 void Host_GetConsoleCommands (void)
 579 {
 580         char *cmd;
 581
 582         while (1)
 583         {
 584                 cmd = Sys_ConsoleInput ();
 585                 if (!cmd)
 586                         break;
 587                 Cbuf_AddText (cmd);
 588         }
 589 }
 590
 591 /*
 592 ==================
 593 Host_TimeReport
 594
 595 Returns a time report string, for example for
 596 ==================
 597 */
 598 const char *Host_TimingReport()
 599 {
 600         return va("%.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);
 601 }
 602
 603 /*
 604 ==================
 605 Host_Frame
 606
 607 Runs all active servers
 608 ==================
 609 */
 610 static void Host_Init(void);
 611 void Host_Main(void)
 612 {
 613         double time1 = 0;
 614         double time2 = 0;
 615         double time3 = 0;
 616         double cl_timer, sv_timer;
 617         double clframetime, deltarealtime, oldrealtime;
 618         double wait;
 619         int pass1, pass2, pass3, i;
 620
 621         Host_Init();
 622
 623         cl_timer = 0;
 624         sv_timer = 0;
 625
 626         realtime = host_starttime = Sys_DoubleTime();
 627         for (;;)
 628         {
 629                 if (setjmp(host_abortframe))
 630                         continue;                       // something bad happened, or the server disconnected
 631
 632                 oldrealtime = realtime;
 633                 realtime = Sys_DoubleTime();
 634
 635                 deltarealtime = realtime - oldrealtime;
 636                 cl_timer += deltarealtime;
 637                 sv_timer += deltarealtime;
 638
 639                 svs.perf_acc_realtime += deltarealtime;
 640
 641                 // Look for clients who have spawned
 642                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 643                         if(host_client->spawned)
 644                                 if(host_client->netconnection)
 645                                         break;
 646                 if(i == svs.maxclients)
 647                 {
 648                         // Nobody is looking? Then we won't do timing...
 649                         // Instead, reset it to zero
 650                         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;
 651                 }
 652                 else if(svs.perf_acc_realtime > 5)
 653                 {
 654                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 655                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 656                         if(svs.perf_acc_offset_samples > 0)
 657                         {
 658                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 659                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 660                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 661                         }
 662                         if(svs.perf_lost > 0)
 663                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 664                         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;
 665                 }
 666
 667                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 668                         Cvar_SetValue("slowmo", 0);
 669                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 670                         Cvar_SetValue("host_framerate", 0);
 671
 672                 // keep the random time dependent, but not when playing demos/benchmarking
 673                 if(!*sv_random_seed.string && !cls.demoplayback)
 674                         rand();
 675
 676                 cl.islocalgame = NetConn_IsLocalGame();
 677
 678                 // begin gathering mouse input
 679                 in_mouse_x = in_mouse_y = 0;
 680
 681                 // get new key events
 682                 Sys_SendKeyEvents();
 683
 684                 NetConn_UpdateSockets();
 685
 686                 Log_DestBuffer_Flush();
 687
 688                 // receive packets on each main loop iteration, as the main loop may
 689                 // be undersleeping due to select() detecting a new packet
 690                 if (sv.active)
 691                         NetConn_ServerFrame();
 692
 693                 Curl_Run();
 694
 695                 // check for commands typed to the host
 696                 Host_GetConsoleCommands();
 697
 698                 // when a server is running we only execute console commands on server frames
 699                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 700                 // otherwise we execute them on client frames
 701                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
 702                 {
 703                         // process console commands
 704                         Cbuf_Execute();
 705                 }
 706
 707                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 708
 709                 // if the accumulators haven't become positive yet, wait a while
 710                 if (cls.state == ca_dedicated)
 711                         wait = sv_timer * -1000000.0;
 712                 else if (!sv.active)
 713                         wait = cl_timer * -1000000.0;
 714                 else
 715                         wait = max(cl_timer, sv_timer) * -1000000.0;
 716                 wait = bound(0, wait, 100000);
 717
 718                 if (!cls.timedemo && wait >= 1)
 719                 {
 720                         double time0 = Sys_DoubleTime();
 721                         if (sv_checkforpacketsduringsleep.integer)
 722                                 NetConn_SleepMicroseconds((int)wait);
 723                         else
 724                                 Sys_Sleep((int)wait);
 725                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 726                         continue;
 727                 }
 728
 729         //-------------------
 730         //
 731         // server operations
 732         //
 733         //-------------------
 734
 735                 // limit the frametime steps to no more than 100ms each
 736                 if (cl_timer > 0.1)
 737                         cl_timer = 0.1;
 738                 if (sv_timer > 0.1)
 739                 {
 740                         svs.perf_acc_lost += (sv_timer - 0.1);
 741                         sv_timer = 0.1;
 742                 }
 743
 744                 if (sv.active && sv_timer > 0)
 745                 {
 746                         // execute one or more server frames, with an upper limit on how much
 747                         // execution time to spend on server frames to avoid freezing the game if
 748                         // the server is overloaded, this execution time limit means the game will
 749                         // slow down if the server is taking too long.
 750                         int framecount, framelimit = 1;
 751                         double advancetime, aborttime = 0;
 752                         float offset;
 753
 754                         // run the world state
 755                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 756
 757                         // stop running server frames if the wall time reaches this value
 758                         if (sys_ticrate.value <= 0)
 759                                 advancetime = sv_timer;
 760                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 761                         {
 762                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 763                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 764                                 framelimit = 10;
 765                                 aborttime = realtime + 0.1;
 766                         }
 767                         else
 768                         {
 769                                 advancetime = sys_ticrate.value;
 770                                 // listen servers can run multiple server frames per client frame
 771                                 if (cls.state == ca_connected)
 772                                 {
 773                                         framelimit = 10;
 774                                         aborttime = realtime + 0.1;
 775                                 }
 776                         }
 777                         advancetime = min(advancetime, 0.1);
 778
 779                         if(advancetime > 0)
 780                         {
 781                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 782                                 ++svs.perf_acc_offset_samples;
 783                                 svs.perf_acc_offset += offset;
 784                                 svs.perf_acc_offset_squared += offset * offset;
 785                                 if(svs.perf_acc_offset_max < offset)
 786                                         svs.perf_acc_offset_max = offset;
 787                         }
 788
 789                         // only advance time if not paused
 790                         // the game also pauses in singleplayer when menu or console is used
 791                         sv.frametime = advancetime * slowmo.value;
 792                         if (host_framerate.value)
 793                                 sv.frametime = host_framerate.value;
 794                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 795                                 sv.frametime = 0;
 796
 797                         // setup the VM frame
 798                         SV_VM_Begin();
 799
 800                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 801                         {
 802                                 sv_timer -= advancetime;
 803
 804                                 // move things around and think unless paused
 805                                 if (sv.frametime)
 806                                         SV_Physics();
 807
 808                                 // if this server frame took too long, break out of the loop
 809                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 810                                         break;
 811                         }
 812
 813                         // send all messages to the clients
 814                         SV_SendClientMessages();
 815
 816                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
 817                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
 818                                 PRVM_ExecuteProgram(prog->funcoffsets.SV_PausedTic, "QC function SV_PausedTic is missing");
 819                         }
 820
 821                         // end the server VM frame
 822                         SV_VM_End();
 823
 824                         // send an heartbeat if enough time has passed since the last one
 825                         NetConn_Heartbeat(0);
 826                 }
 827
 828         //-------------------
 829         //
 830         // client operations
 831         //
 832         //-------------------
 833
 834                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 835                 {
 836                         // decide the simulation time
 837                         if (cls.capturevideo.active)
 838                         {
 839                                 if (cls.capturevideo.realtime)
 840                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 841                                 else
 842                                 {
 843                                         clframetime = 1.0 / cls.capturevideo.framerate;
 844                                         cl.realframetime = max(cl_timer, clframetime);
 845                                 }
 846                         }
 847                         else if (vid_activewindow && cl_maxfps.value >= 1)
 848                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
 849                         else if (!vid_activewindow && cl_maxidlefps.value >= 1)
 850                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
 851                         else
 852                                 clframetime = cl.realframetime = cl_timer;
 853
 854                         // apply slowmo scaling
 855                         clframetime *= cl.movevars_timescale;
 856                         // scale playback speed of demos by slowmo cvar
 857                         if (cls.demoplayback)
 858                         {
 859                                 clframetime *= slowmo.value;
 860                                 // if demo playback is paused, don't advance time at all
 861                                 if (cls.demopaused)
 862                                         clframetime = 0;
 863                         }
 864
 865                         // host_framerate overrides all else
 866                         if (host_framerate.value)
 867                                 clframetime = host_framerate.value;
 868
 869                         if (cls.timedemo)
 870                                 clframetime = cl.realframetime = cl_timer;
 871
 872                         // deduct the frame time from the accumulator
 873                         cl_timer -= cl.realframetime;
 874
 875                         cl.oldtime = cl.time;
 876                         cl.time += clframetime;
 877
 878                         // Collect input into cmd
 879                         CL_Input();
 880
 881                         // check for new packets
 882                         NetConn_ClientFrame();
 883
 884                         // read a new frame from a demo if needed
 885                         CL_ReadDemoMessage();
 886
 887                         // now that packets have been read, send input to server
 888                         CL_SendMove();
 889
 890                         // update client world (interpolate entities, create trails, etc)
 891                         CL_UpdateWorld();
 892
 893                         // update video
 894                         if (host_speeds.integer)
 895                                 time1 = Sys_DoubleTime();
 896
 897                         CL_Video_Frame();
 898                         CL_Gecko_Frame();
 899
 900                         CL_UpdateScreen();
 901
 902                         if (host_speeds.integer)
 903                                 time2 = Sys_DoubleTime();
 904
 905                         // update audio
 906                         if(cl.csqc_usecsqclistener)
 907                         {
 908                                 S_Update(&cl.csqc_listenermatrix);
 909                                 cl.csqc_usecsqclistener = false;
 910                         }
 911                         else
 912                                 S_Update(&r_refdef.view.matrix);
 913
 914                         CDAudio_Update();
 915
 916                         if (host_speeds.integer)
 917                         {
 918                                 pass1 = (int)((time1 - time3)*1000000);
 919                                 time3 = Sys_DoubleTime();
 920                                 pass2 = (int)((time2 - time1)*1000000);
 921                                 pass3 = (int)((time3 - time2)*1000000);
 922                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 923                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 924                         }
 925                         wait = bound(0, host_sleep.value * 1000, 100000);
 926                         if (!cls.timedemo && wait >= 1)
 927                                 Sys_Sleep((int)wait);
 928                 }
 929
 930                 // if there is some time remaining from this frame, reset the timers
 931                 if (cl_timer >= 0)
 932                         cl_timer = 0;
 933                 if (sv_timer >= 0)
 934                 {
 935                         svs.perf_acc_lost += sv_timer;
 936                         sv_timer = 0;
 937                 }
 938
 939                 host_framecount++;
 940         }
 941 }
 942
 943 //============================================================================
 944
 945 qboolean vid_opened = false;
 946 void Host_StartVideo(void)
 947 {
 948         if (!vid_opened && cls.state != ca_dedicated)
 949         {
 950                 vid_opened = true;
 951                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
 952                 NetConn_UpdateSockets();
 953                 VID_Start();
 954                 CDAudio_Startup();
 955         }
 956 }
 957
 958 char engineversion[128];
 959
 960 qboolean sys_nostdout = false;
 961
 962 extern void Render_Init(void);
 963 extern void Mathlib_Init(void);
 964 extern void FS_Init(void);
 965 extern void FS_Shutdown(void);
 966 extern void PR_Cmd_Init(void);
 967 extern void COM_Init_Commands(void);
 968 extern void FS_Init_Commands(void);
 969 extern qboolean host_stuffcmdsrun;
 970
 971 /*
 972 ====================
 973 Host_Init
 974 ====================
 975 */
 976 static void Host_Init (void)
 977 {
 978         int i;
 979         const char* os;
 980
 981         if (COM_CheckParm("-profilegameonly"))
 982                 Sys_AllowProfiling(false);
 983
 984         // LordHavoc: quake never seeded the random number generator before... heh
 985         if (COM_CheckParm("-benchmark"))
 986                 srand(0); // predictable random sequence for -benchmark
 987         else
 988                 srand(time(NULL));
 989
 990         // FIXME: this is evil, but possibly temporary
 991 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 992         if (COM_CheckParm("-developer"))
 993         {
 994                 developer.value = developer.integer = 1;
 995                 developer.string = "1";
 996         }
 997
 998         if (COM_CheckParm("-developer2"))
 999         {
1000                 developer.value = developer.integer = 100;
1001                 developer.string = "100";
1002                 developer_memory.value = developer_memory.integer = 100;
1003                 developer.string = "100";
1004                 developer_memorydebug.value = developer_memorydebug.integer = 100;
1005                 developer_memorydebug.string = "100";
1006         }
1007
1008 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1009         if (COM_CheckParm("-nostdout"))
1010                 sys_nostdout = 1;
1011
1012         // used by everything
1013         Memory_Init();
1014
1015         // initialize console command/cvar/alias/command execution systems
1016         Cmd_Init();
1017
1018         // initialize memory subsystem cvars/commands
1019         Memory_Init_Commands();
1020
1021         // initialize console and logging and its cvars/commands
1022         Con_Init();
1023
1024         // initialize various cvars that could not be initialized earlier
1025         Curl_Init_Commands();
1026         Cmd_Init_Commands();
1027         Sys_Init_Commands();
1028         COM_Init_Commands();
1029         FS_Init_Commands();
1030
1031         // initialize console window (only used by sys_win.c)
1032         Sys_InitConsole();
1033
1034         // detect gamemode from commandline options or executable name
1035         COM_InitGameType();
1036
1037         // construct a version string for the corner of the console
1038         os = DP_OS_NAME;
1039         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1040         Con_Printf("%s\n", engineversion);
1041
1042         // initialize ixtable
1043         Mathlib_Init();
1044
1045         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1046         FS_Init();
1047
1048         NetConn_Init();
1049         Curl_Init();
1050         //PR_Init();
1051         //PR_Cmd_Init();
1052         PRVM_Init();
1053         Mod_Init();
1054         World_Init();
1055         SV_Init();
1056         Host_InitCommands();
1057         Host_InitLocal();
1058         Host_ServerOptions();
1059
1060         if (cls.state == ca_dedicated)
1061                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1062         else
1063         {
1064                 Con_DPrintf("Initializing client\n");
1065
1066                 R_Modules_Init();
1067                 Palette_Init();
1068                 MR_Init_Commands();
1069                 VID_Shared_Init();
1070                 VID_Init();
1071                 Render_Init();
1072                 S_Init();
1073                 CDAudio_Init();
1074                 Key_Init();
1075                 V_Init();
1076                 CL_Init();
1077         }
1078
1079         // set up the default startmap_sp and startmap_dm aliases (mods can
1080         // override these) and then execute the quake.rc startup script
1081         if (gamemode == GAME_NEHAHRA)
1082                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1083         else if (gamemode == GAME_TRANSFUSION)
1084                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1085         else if (gamemode == GAME_TEU)
1086                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1087         else
1088                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1089         Cbuf_Execute();
1090
1091         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1092         if (!host_stuffcmdsrun)
1093         {
1094                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1095                 Cbuf_Execute();
1096         }
1097
1098         // put up the loading image so the user doesn't stare at a black screen...
1099         SCR_BeginLoadingPlaque();
1100
1101         // FIXME: put this into some neat design, but the menu should be allowed to crash
1102         // without crashing the whole game, so this should just be a short-time solution
1103
1104         // here comes the not so critical stuff
1105         if (setjmp(host_abortframe)) {
1106                 return;
1107         }
1108
1109         if (cls.state != ca_dedicated)
1110         {
1111                 MR_Init();
1112         }
1113
1114         // check for special benchmark mode
1115 // COMMANDLINEOPTION: Client: -benchmark <demoname> runs a timedemo and quits, results of any timedemo can be found in gamedir/benchmark.log (for example id1/benchmark.log)
1116         i = COM_CheckParm("-benchmark");
1117         if (i && i + 1 < com_argc)
1118         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1119         {
1120                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1121                 Cbuf_Execute();
1122         }
1123
1124         // check for special demo mode
1125 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1126         i = COM_CheckParm("-demo");
1127         if (i && i + 1 < com_argc)
1128         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1129         {
1130                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1131                 Cbuf_Execute();
1132         }
1133
1134 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1135         i = COM_CheckParm("-capturedemo");
1136         if (i && i + 1 < com_argc)
1137         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1138         {
1139                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1140                 Cbuf_Execute();
1141         }
1142
1143         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1144         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1145         {
1146                 Cbuf_AddText("startmap_dm\n");
1147                 Cbuf_Execute();
1148         }
1149
1150         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1151         {
1152                 Cbuf_AddText("togglemenu\n");
1153                 Cbuf_Execute();
1154         }
1155
1156         Con_DPrint("========Initialized=========\n");
1157
1158         //Host_StartVideo();
1159 }
1160
1161
1162 /*
1163 ===============
1164 Host_Shutdown
1165
1166 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1167 to run quit through here before the final handoff to the sys code.
1168 ===============
1169 */
1170 void Host_Shutdown(void)
1171 {
1172         static qboolean isdown = false;
1173
1174         if (isdown)
1175         {
1176                 Con_Print("recursive shutdown\n");
1177                 return;
1178         }
1179         if (setjmp(host_abortframe))
1180         {
1181                 Con_Print("aborted the quitting frame?!?\n");
1182                 return;
1183         }
1184         isdown = true;
1185
1186         // be quiet while shutting down
1187         S_StopAllSounds();
1188
1189         // disconnect client from server if active
1190         CL_Disconnect();
1191
1192         // shut down local server if active
1193         Host_ShutdownServer ();
1194
1195         // Shutdown menu
1196         if(MR_Shutdown)
1197                 MR_Shutdown();
1198
1199         // AK shutdown PRVM
1200         // AK hmm, no PRVM_Shutdown(); yet
1201
1202         CL_Gecko_Shutdown();
1203         CL_Video_Shutdown();
1204
1205         Host_SaveConfig();
1206
1207         CDAudio_Shutdown ();
1208         S_Terminate ();
1209         Curl_Shutdown ();
1210         NetConn_Shutdown ();
1211         //PR_Shutdown ();
1212
1213         if (cls.state != ca_dedicated)
1214         {
1215                 R_Modules_Shutdown();
1216                 VID_Shutdown();
1217         }
1218
1219         Cmd_Shutdown();
1220         CL_Shutdown();
1221         Sys_Shutdown();
1222         Log_Close();
1223         FS_Shutdown();
1224         Memory_Shutdown();
1225 }
1226