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
  58 // pretend frames take this amount of time (in seconds), 0 = realtime
  59 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"};
  60 // shows time used by certain subsystems
  61 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  62 // LordHavoc: framerate upper cap
  63 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "1000000", "maximum fps cap, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};
  64 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"};
  65
  66 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  67 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  68
  69 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  70 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  71
  72 /*
  73 ================
  74 Host_AbortCurrentFrame
  75
  76 aborts the current host frame and goes on with the next one
  77 ================
  78 */
  79 void Host_AbortCurrentFrame(void)
  80 {
  81         longjmp (host_abortframe, 1);
  82 }
  83
  84 /*
  85 ================
  86 Host_Error
  87
  88 This shuts down both the client and server
  89 ================
  90 */
  91 void Host_Error (const char *error, ...)
  92 {
  93         static char hosterrorstring1[MAX_INPUTLINE];
  94         static char hosterrorstring2[MAX_INPUTLINE];
  95         static qboolean hosterror = false;
  96         va_list argptr;
  97
  98         // turn off rcon redirect if it was active when the crash occurred
  99         rcon_redirect = false;
 100
 101         va_start (argptr,error);
 102         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 103         va_end (argptr);
 104
 105         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 106
 107         // LordHavoc: if crashing very early, or currently shutting down, do
 108         // Sys_Error instead
 109         if (host_framecount < 3 || host_shuttingdown)
 110                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 111
 112         if (hosterror)
 113                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 114         hosterror = true;
 115
 116         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 117
 118         CL_Parse_DumpPacket();
 119
 120         CL_Parse_ErrorCleanUp();
 121
 122         //PR_Crash();
 123
 124         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 125         PRVM_Crash();
 126
 127
 128         Host_ShutdownServer ();
 129
 130         if (cls.state == ca_dedicated)
 131                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 132
 133         CL_Disconnect ();
 134         cls.demonum = -1;
 135
 136         hosterror = false;
 137
 138         Host_AbortCurrentFrame();
 139 }
 140
 141 void Host_ServerOptions (void)
 142 {
 143         int i;
 144
 145         // general default
 146         svs.maxclients = 8;
 147
 148 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 149 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 150         // if no client is in the executable or -dedicated is specified on
 151         // commandline, start a dedicated server
 152         i = COM_CheckParm ("-dedicated");
 153         if (i || !cl_available)
 154         {
 155                 cls.state = ca_dedicated;
 156                 // check for -dedicated specifying how many players
 157                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 158                         svs.maxclients = atoi (com_argv[i+1]);
 159                 if (COM_CheckParm ("-listen"))
 160                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 161                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 162                 Cvar_SetValue("sv_public", 1);
 163         }
 164         else if (cl_available)
 165         {
 166                 // client exists and not dedicated, check if -listen is specified
 167                 cls.state = ca_disconnected;
 168                 i = COM_CheckParm ("-listen");
 169                 if (i)
 170                 {
 171                         // default players unless specified
 172                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 173                                 svs.maxclients = atoi (com_argv[i+1]);
 174                 }
 175                 else
 176                 {
 177                         // default players in some games, singleplayer in most
 178                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 179                                 svs.maxclients = 1;
 180                 }
 181         }
 182
 183         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 184
 185         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 186
 187         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 188                 Cvar_SetValueQuick(&deathmatch, 1);
 189 }
 190
 191 /*
 192 =======================
 193 Host_InitLocal
 194 ======================
 195 */
 196 void Host_SaveConfig_f(void);
 197 void Host_LoadConfig_f(void);
 198 static void Host_InitLocal (void)
 199 {
 200         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg immediately (also automatic when quitting)");
 201         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 202
 203         Cvar_RegisterVariable (&host_framerate);
 204         Cvar_RegisterVariable (&host_speeds);
 205         Cvar_RegisterVariable (&cl_maxfps);
 206         Cvar_RegisterVariable (&cl_maxidlefps);
 207
 208         Cvar_RegisterVariable (&developer);
 209         Cvar_RegisterVariable (&developer_entityparsing);
 210
 211         Cvar_RegisterVariable (&timestamps);
 212         Cvar_RegisterVariable (&timeformat);
 213 }
 214
 215
 216 /*
 217 ===============
 218 Host_SaveConfig_f
 219
 220 Writes key bindings and archived cvars to config.cfg
 221 ===============
 222 */
 223 void Host_SaveConfig_f(void)
 224 {
 225         qfile_t *f;
 226
 227 // dedicated servers initialize the host but don't parse and set the
 228 // config.cfg cvars
 229         // LordHavoc: don't save a config if it crashed in startup
 230         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 231         {
 232                 f = FS_Open ("config.cfg", "wb", false, false);
 233                 if (!f)
 234                 {
 235                         Con_Print("Couldn't write config.cfg.\n");
 236                         return;
 237                 }
 238
 239                 Key_WriteBindings (f);
 240                 Cvar_WriteVariables (f);
 241
 242                 FS_Close (f);
 243         }
 244 }
 245
 246
 247 /*
 248 ===============
 249 Host_LoadConfig_f
 250
 251 Resets key bindings and cvars to defaults and then reloads scripts
 252 ===============
 253 */
 254 void Host_LoadConfig_f(void)
 255 {
 256         // unlock the cvar default strings so they can be updated by the new default.cfg
 257         Cvar_UnlockDefaults();
 258         // reset cvars to their defaults, and then exec startup scripts again
 259         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 260 }
 261
 262 /*
 263 =================
 264 SV_ClientPrint
 265
 266 Sends text across to be displayed
 267 FIXME: make this just a stuffed echo?
 268 =================
 269 */
 270 void SV_ClientPrint(const char *msg)
 271 {
 272         if (host_client->netconnection)
 273         {
 274                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 275                 MSG_WriteString(&host_client->netconnection->message, msg);
 276         }
 277 }
 278
 279 /*
 280 =================
 281 SV_ClientPrintf
 282
 283 Sends text across to be displayed
 284 FIXME: make this just a stuffed echo?
 285 =================
 286 */
 287 void SV_ClientPrintf(const char *fmt, ...)
 288 {
 289         va_list argptr;
 290         char msg[MAX_INPUTLINE];
 291
 292         va_start(argptr,fmt);
 293         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 294         va_end(argptr);
 295
 296         SV_ClientPrint(msg);
 297 }
 298
 299 /*
 300 =================
 301 SV_BroadcastPrint
 302
 303 Sends text to all active clients
 304 =================
 305 */
 306 void SV_BroadcastPrint(const char *msg)
 307 {
 308         int i;
 309         client_t *client;
 310
 311         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 312         {
 313                 if (client->active && client->netconnection)
 314                 {
 315                         MSG_WriteByte(&client->netconnection->message, svc_print);
 316                         MSG_WriteString(&client->netconnection->message, msg);
 317                 }
 318         }
 319
 320         if (sv_echobprint.integer && cls.state == ca_dedicated)
 321                 Con_Print(msg);
 322 }
 323
 324 /*
 325 =================
 326 SV_BroadcastPrintf
 327
 328 Sends text to all active clients
 329 =================
 330 */
 331 void SV_BroadcastPrintf(const char *fmt, ...)
 332 {
 333         va_list argptr;
 334         char msg[MAX_INPUTLINE];
 335
 336         va_start(argptr,fmt);
 337         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 338         va_end(argptr);
 339
 340         SV_BroadcastPrint(msg);
 341 }
 342
 343 /*
 344 =================
 345 Host_ClientCommands
 346
 347 Send text over to the client to be executed
 348 =================
 349 */
 350 void Host_ClientCommands(const char *fmt, ...)
 351 {
 352         va_list argptr;
 353         char string[MAX_INPUTLINE];
 354
 355         if (!host_client->netconnection)
 356                 return;
 357
 358         va_start(argptr,fmt);
 359         dpvsnprintf(string, sizeof(string), fmt, argptr);
 360         va_end(argptr);
 361
 362         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 363         MSG_WriteString(&host_client->netconnection->message, string);
 364 }
 365
 366 /*
 367 =====================
 368 SV_DropClient
 369
 370 Called when the player is getting totally kicked off the host
 371 if (crash = true), don't bother sending signofs
 372 =====================
 373 */
 374 void SV_DropClient(qboolean crash)
 375 {
 376         int i;
 377         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 378
 379         SV_StopDemoRecording(host_client);
 380
 381         // make sure edict is not corrupt (from a level change for example)
 382         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 383
 384         if (host_client->netconnection)
 385         {
 386                 // free the client (the body stays around)
 387                 if (!crash)
 388                 {
 389                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 390                         unsigned char bufdata[8];
 391                         sizebuf_t buf;
 392                         memset(&buf, 0, sizeof(buf));
 393                         buf.data = bufdata;
 394                         buf.maxsize = sizeof(bufdata);
 395                         MSG_WriteByte(&buf, svc_disconnect);
 396                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 397                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 398                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 399                 }
 400                 // break the net connection
 401                 NetConn_Close(host_client->netconnection);
 402                 host_client->netconnection = NULL;
 403         }
 404
 405         // call qc ClientDisconnect function
 406         // LordHavoc: don't call QC if server is dead (avoids recursive
 407         // Host_Error in some mods when they run out of edicts)
 408         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 409         {
 410                 // call the prog function for removing a client
 411                 // this will set the body to a dead frame, among other things
 412                 int saveSelf = prog->globals.server->self;
 413                 host_client->clientconnectcalled = false;
 414                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 415                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 416                 prog->globals.server->self = saveSelf;
 417         }
 418
 419         // if a download is active, close it
 420         if (host_client->download_file)
 421         {
 422                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 423                 FS_Close(host_client->download_file);
 424                 host_client->download_file = NULL;
 425                 host_client->download_name[0] = 0;
 426                 host_client->download_expectedposition = 0;
 427                 host_client->download_started = false;
 428         }
 429
 430         // remove leaving player from scoreboard
 431         host_client->name[0] = 0;
 432         host_client->colors = 0;
 433         host_client->frags = 0;
 434         // send notification to all clients
 435         // get number of client manually just to make sure we get it right...
 436         i = host_client - svs.clients;
 437         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 438         MSG_WriteByte (&sv.reliable_datagram, i);
 439         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 440         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 441         MSG_WriteByte (&sv.reliable_datagram, i);
 442         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 443         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 444         MSG_WriteByte (&sv.reliable_datagram, i);
 445         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 446
 447         // free the client now
 448         if (host_client->entitydatabase)
 449                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 450         if (host_client->entitydatabase4)
 451                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 452         if (host_client->entitydatabase5)
 453                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 454
 455         if (sv.active)
 456         {
 457                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 458                 PRVM_ED_ClearEdict(host_client->edict);
 459         }
 460
 461         // clear the client struct (this sets active to false)
 462         memset(host_client, 0, sizeof(*host_client));
 463
 464         // update server listing on the master because player count changed
 465         // (which the master uses for filtering empty/full servers)
 466         NetConn_Heartbeat(1);
 467
 468         if (sv.loadgame)
 469         {
 470                 for (i = 0;i < svs.maxclients;i++)
 471                         if (svs.clients[i].active && !svs.clients[i].spawned)
 472                                 break;
 473                 if (i == svs.maxclients)
 474                 {
 475                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 476                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 477                 }
 478         }
 479 }
 480
 481 /*
 482 ==================
 483 Host_ShutdownServer
 484
 485 This only happens at the end of a game, not between levels
 486 ==================
 487 */
 488 void Host_ShutdownServer(void)
 489 {
 490         int i;
 491
 492         Con_DPrintf("Host_ShutdownServer\n");
 493
 494         if (!sv.active)
 495                 return;
 496
 497         NetConn_Heartbeat(2);
 498         NetConn_Heartbeat(2);
 499
 500 // make sure all the clients know we're disconnecting
 501         SV_VM_Begin();
 502         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 503                 if (host_client->active)
 504                         SV_DropClient(false); // server shutdown
 505         SV_VM_End();
 506
 507         NetConn_CloseServerPorts();
 508
 509         sv.active = false;
 510 //
 511 // clear structures
 512 //
 513         memset(&sv, 0, sizeof(sv));
 514         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 515 }
 516
 517
 518 //============================================================================
 519
 520 /*
 521 ===================
 522 Host_GetConsoleCommands
 523
 524 Add them exactly as if they had been typed at the console
 525 ===================
 526 */
 527 void Host_GetConsoleCommands (void)
 528 {
 529         char *cmd;
 530
 531         while (1)
 532         {
 533                 cmd = Sys_ConsoleInput ();
 534                 if (!cmd)
 535                         break;
 536                 Cbuf_AddText (cmd);
 537         }
 538 }
 539
 540 /*
 541 ==================
 542 Host_TimeReport
 543
 544 Returns a time report string, for example for
 545 ==================
 546 */
 547 const char *Host_TimingReport()
 548 {
 549         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);
 550 }
 551
 552 /*
 553 ==================
 554 Host_Frame
 555
 556 Runs all active servers
 557 ==================
 558 */
 559 static void Host_Init(void);
 560 void Host_Main(void)
 561 {
 562         double time1 = 0;
 563         double time2 = 0;
 564         double time3 = 0;
 565         double cl_timer, sv_timer;
 566         double clframetime, deltarealtime, oldrealtime;
 567         double wait;
 568         int pass1, pass2, pass3, i;
 569
 570         Host_Init();
 571
 572         cl_timer = 0;
 573         sv_timer = 0;
 574
 575         realtime = Sys_DoubleTime();
 576         for (;;)
 577         {
 578                 if (setjmp(host_abortframe))
 579                         continue;                       // something bad happened, or the server disconnected
 580
 581                 oldrealtime = realtime;
 582                 realtime = Sys_DoubleTime();
 583
 584                 deltarealtime = realtime - oldrealtime;
 585                 cl_timer += deltarealtime;
 586                 sv_timer += deltarealtime;
 587
 588                 svs.perf_acc_realtime += deltarealtime;
 589
 590                 // Look for clients who have spawned
 591                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 592                         if(host_client->spawned)
 593                                 if(host_client->netconnection)
 594                                         break;
 595                 if(i == svs.maxclients)
 596                 {
 597                         // Nobody is looking? Then we won't do timing...
 598                         // Instead, reset it to zero
 599                         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;
 600                 }
 601                 else if(svs.perf_acc_realtime > 5)
 602                 {
 603                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 604                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 605                         if(svs.perf_acc_offset_samples > 0)
 606                         {
 607                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 608                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 609                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 610                         }
 611                         if(svs.perf_lost > 0)
 612                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 613                         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;
 614                 }
 615
 616                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 617                         Cvar_SetValue("slowmo", 0);
 618                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 619                         Cvar_SetValue("host_framerate", 0);
 620
 621                 // keep the random time dependent, but not when playing demos/benchmarking
 622                 if(!*sv_random_seed.string && !cls.demoplayback)
 623                         rand();
 624
 625                 cl.islocalgame = NetConn_IsLocalGame();
 626
 627                 // get new key events
 628                 Sys_SendKeyEvents();
 629
 630                 NetConn_UpdateSockets();
 631
 632                 Log_DestBuffer_Flush();
 633
 634                 // receive packets on each main loop iteration, as the main loop may
 635                 // be undersleeping due to select() detecting a new packet
 636                 if (sv.active)
 637                         NetConn_ServerFrame();
 638
 639                 Curl_Run();
 640
 641                 // check for commands typed to the host
 642                 Host_GetConsoleCommands();
 643
 644                 // when a server is running we only execute console commands on server frames
 645                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 646                 // otherwise we execute them on all frames
 647                 if (sv_timer > 0 || !sv.active)
 648                 {
 649                         // process console commands
 650                         Cbuf_Execute();
 651                 }
 652
 653                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 654
 655                 // if the accumulators haven't become positive yet, wait a while
 656                 if (cls.state == ca_dedicated)
 657                         wait = sv_timer * -1000000.0;
 658                 else if (!sv.active)
 659                         wait = cl_timer * -1000000.0;
 660                 else
 661                         wait = max(cl_timer, sv_timer) * -1000000.0;
 662                 if (wait > 100000)
 663                         wait = 100000;
 664
 665                 if (!cls.timedemo && wait > 0)
 666                 {
 667                         double time0 = Sys_DoubleTime();
 668                         if (sv_checkforpacketsduringsleep.integer)
 669                         {
 670                                 if (wait >= 1)
 671                                         NetConn_SleepMicroseconds((int)wait);
 672                         }
 673                         else
 674                         {
 675                                 if (wait >= 1000)
 676                                         Sys_Sleep((int)wait / 1000);
 677                         }
 678                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 679                         continue;
 680                 }
 681
 682         //-------------------
 683         //
 684         // server operations
 685         //
 686         //-------------------
 687
 688                 // limit the frametime steps to no more than 100ms each
 689                 if (cl_timer > 0.1)
 690                         cl_timer = 0.1;
 691                 if (sv_timer > 0.1)
 692                 {
 693                         svs.perf_acc_lost += (sv_timer - 0.1);
 694                         sv_timer = 0.1;
 695                 }
 696
 697                 if (sv.active && sv_timer > 0)
 698                 {
 699                         // execute one or more server frames, with an upper limit on how much
 700                         // execution time to spend on server frames to avoid freezing the game if
 701                         // the server is overloaded, this execution time limit means the game will
 702                         // slow down if the server is taking too long.
 703                         int framecount, framelimit = 1;
 704                         double advancetime, aborttime = 0;
 705                         float offset;
 706
 707                         // run the world state
 708                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 709
 710                         // stop running server frames if the wall time reaches this value
 711                         if (sys_ticrate.value <= 0)
 712                                 advancetime = sv_timer;
 713                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 714                         {
 715                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 716                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 717                                 framelimit = 10;
 718                                 aborttime = realtime + 0.1;
 719                         }
 720                         else
 721                         {
 722                                 advancetime = sys_ticrate.value;
 723                                 // listen servers can run multiple server frames per client frame
 724                                 if (cls.state == ca_connected)
 725                                 {
 726                                         framelimit = 10;
 727                                         aborttime = realtime + 0.1;
 728                                 }
 729                         }
 730                         advancetime = min(advancetime, 0.1);
 731
 732                         if(advancetime > 0)
 733                         {
 734                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 735                                 ++svs.perf_acc_offset_samples;
 736                                 svs.perf_acc_offset += offset;
 737                                 svs.perf_acc_offset_squared += offset * offset;
 738                                 if(svs.perf_acc_offset_max < offset)
 739                                         svs.perf_acc_offset_max = offset;
 740                         }
 741
 742                         // only advance time if not paused
 743                         // the game also pauses in singleplayer when menu or console is used
 744                         sv.frametime = advancetime * slowmo.value;
 745                         if (host_framerate.value)
 746                                 sv.frametime = host_framerate.value;
 747                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 748                                 sv.frametime = 0;
 749
 750                         // setup the VM frame
 751                         SV_VM_Begin();
 752
 753                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 754                         {
 755                                 sv_timer -= advancetime;
 756
 757                                 // move things around and think unless paused
 758                                 if (sv.frametime)
 759                                         SV_Physics();
 760
 761                                 // if this server frame took too long, break out of the loop
 762                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 763                                         break;
 764                         }
 765
 766                         // send all messages to the clients
 767                         SV_SendClientMessages();
 768
 769                         // end the server VM frame
 770                         SV_VM_End();
 771
 772                         // send an heartbeat if enough time has passed since the last one
 773                         NetConn_Heartbeat(0);
 774                 }
 775
 776         //-------------------
 777         //
 778         // client operations
 779         //
 780         //-------------------
 781
 782                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 783                 {
 784                         // decide the simulation time
 785                         if (cls.capturevideo.active)
 786                         {
 787                                 if (cls.capturevideo.realtime)
 788                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 789                                 else
 790                                 {
 791                                         clframetime = 1.0 / cls.capturevideo.framerate;
 792                                         cl.realframetime = max(cl_timer, clframetime);
 793                                 }
 794                         }
 795                         else if (vid_activewindow)
 796                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 797                         else
 798                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 799
 800                         // apply slowmo scaling
 801                         clframetime *= cl.movevars_timescale;
 802                         // scale playback speed of demos by slowmo cvar
 803                         if (cls.demoplayback)
 804                         {
 805                                 clframetime *= slowmo.value;
 806                                 // if demo playback is paused, don't advance time at all
 807                                 if (cls.demopaused)
 808                                         clframetime = 0;
 809                         }
 810
 811                         // host_framerate overrides all else
 812                         if (host_framerate.value)
 813                                 clframetime = host_framerate.value;
 814
 815                         if (cls.timedemo)
 816                                 clframetime = cl.realframetime = cl_timer;
 817
 818                         // deduct the frame time from the accumulator
 819                         cl_timer -= cl.realframetime;
 820
 821                         cl.oldtime = cl.time;
 822                         cl.time += clframetime;
 823
 824                         // Collect input into cmd
 825                         CL_Input();
 826
 827                         // check for new packets
 828                         NetConn_ClientFrame();
 829
 830                         // read a new frame from a demo if needed
 831                         CL_ReadDemoMessage();
 832
 833                         // now that packets have been read, send input to server
 834                         CL_SendMove();
 835
 836                         // update client world (interpolate entities, create trails, etc)
 837                         CL_UpdateWorld();
 838
 839                         // update video
 840                         if (host_speeds.integer)
 841                                 time1 = Sys_DoubleTime();
 842
 843                         //ui_update();
 844
 845                         CL_Video_Frame();
 846 #ifdef SUPPORT_GECKO
 847                         CL_Gecko_Frame();
 848 #endif
 849
 850                         CL_UpdateScreen();
 851
 852                         if (host_speeds.integer)
 853                                 time2 = Sys_DoubleTime();
 854
 855                         // update audio
 856                         if(cl.csqc_usecsqclistener)
 857                         {
 858                                 S_Update(&cl.csqc_listenermatrix);
 859                                 cl.csqc_usecsqclistener = false;
 860                         }
 861                         else
 862                                 S_Update(&r_view.matrix);
 863
 864                         CDAudio_Update();
 865
 866                         if (host_speeds.integer)
 867                         {
 868                                 pass1 = (int)((time1 - time3)*1000000);
 869                                 time3 = Sys_DoubleTime();
 870                                 pass2 = (int)((time2 - time1)*1000000);
 871                                 pass3 = (int)((time3 - time2)*1000000);
 872                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 873                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 874                         }
 875                 }
 876
 877                 // if there is some time remaining from this frame, reset the timers
 878                 if (cl_timer >= 0)
 879                         cl_timer = 0;
 880                 if (sv_timer >= 0)
 881                 {
 882                         svs.perf_acc_lost += sv_timer;
 883                         sv_timer = 0;
 884                 }
 885
 886                 host_framecount++;
 887         }
 888 }
 889
 890 //============================================================================
 891
 892 qboolean vid_opened = false;
 893 void Host_StartVideo(void)
 894 {
 895         if (!vid_opened && cls.state != ca_dedicated)
 896         {
 897                 vid_opened = true;
 898                 VID_Start();
 899                 CDAudio_Startup();
 900         }
 901 }
 902
 903 char engineversion[128];
 904
 905 qboolean sys_nostdout = false;
 906
 907 extern void Render_Init(void);
 908 extern void Mathlib_Init(void);
 909 extern void FS_Init(void);
 910 extern void FS_Shutdown(void);
 911 extern void PR_Cmd_Init(void);
 912 extern void COM_Init_Commands(void);
 913 extern void FS_Init_Commands(void);
 914 extern qboolean host_stuffcmdsrun;
 915
 916 /*
 917 ====================
 918 Host_Init
 919 ====================
 920 */
 921 static void Host_Init (void)
 922 {
 923         int i;
 924         const char* os;
 925
 926         if (COM_CheckParm("-profilegameonly"))
 927                 Sys_AllowProfiling(false);
 928
 929         // LordHavoc: quake never seeded the random number generator before... heh
 930         if (COM_CheckParm("-benchmark"))
 931                 srand(0); // predictable random sequence for -benchmark
 932         else
 933                 srand(time(NULL));
 934
 935         // FIXME: this is evil, but possibly temporary
 936 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 937         if (COM_CheckParm("-developer"))
 938         {
 939                 developer.value = developer.integer = 100;
 940                 developer.string = "100";
 941         }
 942
 943         if (COM_CheckParm("-developer2"))
 944         {
 945                 developer.value = developer.integer = 100;
 946                 developer.string = "100";
 947                 developer_memory.value = developer_memory.integer = 100;
 948                 developer.string = "100";
 949                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 950                 developer_memorydebug.string = "100";
 951         }
 952
 953 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 954         if (COM_CheckParm("-nostdout"))
 955                 sys_nostdout = 1;
 956
 957         // used by everything
 958         Memory_Init();
 959
 960         // initialize console command/cvar/alias/command execution systems
 961         Cmd_Init();
 962
 963         // initialize memory subsystem cvars/commands
 964         Memory_Init_Commands();
 965
 966         // initialize console and logging and its cvars/commands
 967         Con_Init();
 968
 969         // initialize various cvars that could not be initialized earlier
 970         Curl_Init_Commands();
 971         Cmd_Init_Commands();
 972         Sys_Init_Commands();
 973         COM_Init_Commands();
 974         FS_Init_Commands();
 975
 976         // initialize console window (only used by sys_win.c)
 977         Sys_InitConsole();
 978
 979         // detect gamemode from commandline options or executable name
 980         COM_InitGameType();
 981
 982         // construct a version string for the corner of the console
 983 #if defined(__linux__)
 984         os = "Linux";
 985 #elif defined(WIN32)
 986         os = "Windows";
 987 #elif defined(__FreeBSD__)
 988         os = "FreeBSD";
 989 #elif defined(__NetBSD__)
 990         os = "NetBSD";
 991 #elif defined(__OpenBSD__)
 992         os = "OpenBSD";
 993 #elif defined(MACOSX)
 994         os = "Mac OS X";
 995 #elif defined(__MORPHOS__)
 996         os = "MorphOS";
 997 #else
 998         os = "Unknown";
 999 #endif
1000         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1001         Con_Printf("%s\n", engineversion);
1002
1003         // initialize ixtable
1004         Mathlib_Init();
1005
1006         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1007         FS_Init();
1008
1009         NetConn_Init();
1010         Curl_Init();
1011         //PR_Init();
1012         //PR_Cmd_Init();
1013         PRVM_Init();
1014         Mod_Init();
1015         World_Init();
1016         SV_Init();
1017         Host_InitCommands();
1018         Host_InitLocal();
1019         Host_ServerOptions();
1020
1021         if (cls.state != ca_dedicated)
1022         {
1023                 Con_Printf("Initializing client\n");
1024
1025                 R_Modules_Init();
1026                 Palette_Init();
1027                 MR_Init_Commands();
1028                 VID_Shared_Init();
1029                 VID_Init();
1030                 Render_Init();
1031                 S_Init();
1032                 CDAudio_Init();
1033                 Key_Init();
1034                 V_Init();
1035                 CL_Init();
1036         }
1037
1038         // set up the default startmap_sp and startmap_dm aliases (mods can
1039         // override these) and then execute the quake.rc startup script
1040         if (gamemode == GAME_NEHAHRA)
1041                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1042         else if (gamemode == GAME_TRANSFUSION)
1043                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1044         else if (gamemode == GAME_TEU)
1045                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1046         else
1047                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1048         Cbuf_Execute();
1049
1050         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1051         if (!host_stuffcmdsrun)
1052         {
1053                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1054                 Cbuf_Execute();
1055         }
1056
1057         // put up the loading image so the user doesn't stare at a black screen...
1058         SCR_BeginLoadingPlaque();
1059
1060         // FIXME: put this into some neat design, but the menu should be allowed to crash
1061         // without crashing the whole game, so this should just be a short-time solution
1062
1063         // here comes the not so critical stuff
1064         if (setjmp(host_abortframe)) {
1065                 return;
1066         }
1067
1068         if (cls.state != ca_dedicated)
1069         {
1070                 MR_Init();
1071         }
1072
1073         // check for special benchmark mode
1074 // 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)
1075         i = COM_CheckParm("-benchmark");
1076         if (i && i + 1 < com_argc)
1077         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1078         {
1079                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1080                 Cbuf_Execute();
1081         }
1082
1083         // check for special demo mode
1084 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1085         i = COM_CheckParm("-demo");
1086         if (i && i + 1 < com_argc)
1087         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1088         {
1089                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1090                 Cbuf_Execute();
1091         }
1092
1093 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1094         i = COM_CheckParm("-capturedemo");
1095         if (i && i + 1 < com_argc)
1096         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1097         {
1098                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1099                 Cbuf_Execute();
1100         }
1101
1102         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1103         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1104         {
1105                 Cbuf_AddText("startmap_dm\n");
1106                 Cbuf_Execute();
1107         }
1108
1109         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1110         {
1111                 if (gamemode == GAME_NEXUIZ)
1112                         Cbuf_AddText("togglemenu\nplayvideo logo\ncd loop 1\n");
1113                 else
1114                         Cbuf_AddText("togglemenu\n");
1115                 Cbuf_Execute();
1116         }
1117
1118         Con_DPrint("========Initialized=========\n");
1119
1120         //Host_StartVideo();
1121 }
1122
1123
1124 /*
1125 ===============
1126 Host_Shutdown
1127
1128 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1129 to run quit through here before the final handoff to the sys code.
1130 ===============
1131 */
1132 void Host_Shutdown(void)
1133 {
1134         static qboolean isdown = false;
1135
1136         if (isdown)
1137         {
1138                 Con_Print("recursive shutdown\n");
1139                 return;
1140         }
1141         if (setjmp(host_abortframe))
1142         {
1143                 Con_Print("aborted the quitting frame?!?\n");
1144                 return;
1145         }
1146         isdown = true;
1147
1148         // be quiet while shutting down
1149         S_StopAllSounds();
1150
1151         // disconnect client from server if active
1152         CL_Disconnect();
1153
1154         // shut down local server if active
1155         Host_ShutdownServer ();
1156
1157         // Shutdown menu
1158         if(MR_Shutdown)
1159                 MR_Shutdown();
1160
1161         // AK shutdown PRVM
1162         // AK hmm, no PRVM_Shutdown(); yet
1163
1164 #ifdef SUPPORT_GECKO
1165         CL_Gecko_Shutdown();
1166 #endif
1167         CL_Video_Shutdown();
1168
1169         Host_SaveConfig_f();
1170
1171         CDAudio_Shutdown ();
1172         S_Terminate ();
1173         Curl_Shutdown ();
1174         NetConn_Shutdown ();
1175         //PR_Shutdown ();
1176
1177         if (cls.state != ca_dedicated)
1178         {
1179                 R_Modules_Shutdown();
1180                 VID_Shutdown();
1181         }
1182
1183         Cmd_Shutdown();
1184         CL_Shutdown();
1185         Sys_Shutdown();
1186         Log_Close();
1187         FS_Shutdown();
1188         Memory_Shutdown();
1189 }
1190