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 (or a specified filename) 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_to(const char *file)
 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 (file, "wb", false, false);
 233                 if (!f)
 234                 {
 235                         Con_Printf("Couldn't write %s.\n", file);
 236                         return;
 237                 }
 238
 239                 Key_WriteBindings (f);
 240                 Cvar_WriteVariables (f);
 241
 242                 FS_Close (f);
 243         }
 244 }
 245 void Host_SaveConfig(void)
 246 {
 247         Host_SaveConfig_to("config.cfg");
 248 }
 249 void Host_SaveConfig_f(void)
 250 {
 251         const char *file = "config.cfg";
 252
 253         if(Cmd_Argc() >= 2) {
 254                 file = Cmd_Argv(1);
 255                 Con_Printf("Saving to %s\n", file);
 256         }
 257
 258         Host_SaveConfig_to(file);
 259 }
 260
 261 /*
 262 ===============
 263 Host_LoadConfig_f
 264
 265 Resets key bindings and cvars to defaults and then reloads scripts
 266 ===============
 267 */
 268 void Host_LoadConfig_f(void)
 269 {
 270         // unlock the cvar default strings so they can be updated by the new default.cfg
 271         Cvar_UnlockDefaults();
 272         // reset cvars to their defaults, and then exec startup scripts again
 273         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 274 }
 275
 276 /*
 277 =================
 278 SV_ClientPrint
 279
 280 Sends text across to be displayed
 281 FIXME: make this just a stuffed echo?
 282 =================
 283 */
 284 void SV_ClientPrint(const char *msg)
 285 {
 286         if (host_client->netconnection)
 287         {
 288                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 289                 MSG_WriteString(&host_client->netconnection->message, msg);
 290         }
 291 }
 292
 293 /*
 294 =================
 295 SV_ClientPrintf
 296
 297 Sends text across to be displayed
 298 FIXME: make this just a stuffed echo?
 299 =================
 300 */
 301 void SV_ClientPrintf(const char *fmt, ...)
 302 {
 303         va_list argptr;
 304         char msg[MAX_INPUTLINE];
 305
 306         va_start(argptr,fmt);
 307         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 308         va_end(argptr);
 309
 310         SV_ClientPrint(msg);
 311 }
 312
 313 /*
 314 =================
 315 SV_BroadcastPrint
 316
 317 Sends text to all active clients
 318 =================
 319 */
 320 void SV_BroadcastPrint(const char *msg)
 321 {
 322         int i;
 323         client_t *client;
 324
 325         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 326         {
 327                 if (client->active && client->netconnection)
 328                 {
 329                         MSG_WriteByte(&client->netconnection->message, svc_print);
 330                         MSG_WriteString(&client->netconnection->message, msg);
 331                 }
 332         }
 333
 334         if (sv_echobprint.integer && cls.state == ca_dedicated)
 335                 Con_Print(msg);
 336 }
 337
 338 /*
 339 =================
 340 SV_BroadcastPrintf
 341
 342 Sends text to all active clients
 343 =================
 344 */
 345 void SV_BroadcastPrintf(const char *fmt, ...)
 346 {
 347         va_list argptr;
 348         char msg[MAX_INPUTLINE];
 349
 350         va_start(argptr,fmt);
 351         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 352         va_end(argptr);
 353
 354         SV_BroadcastPrint(msg);
 355 }
 356
 357 /*
 358 =================
 359 Host_ClientCommands
 360
 361 Send text over to the client to be executed
 362 =================
 363 */
 364 void Host_ClientCommands(const char *fmt, ...)
 365 {
 366         va_list argptr;
 367         char string[MAX_INPUTLINE];
 368
 369         if (!host_client->netconnection)
 370                 return;
 371
 372         va_start(argptr,fmt);
 373         dpvsnprintf(string, sizeof(string), fmt, argptr);
 374         va_end(argptr);
 375
 376         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 377         MSG_WriteString(&host_client->netconnection->message, string);
 378 }
 379
 380 /*
 381 =====================
 382 SV_DropClient
 383
 384 Called when the player is getting totally kicked off the host
 385 if (crash = true), don't bother sending signofs
 386 =====================
 387 */
 388 void SV_DropClient(qboolean crash)
 389 {
 390         int i;
 391         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 392
 393         SV_StopDemoRecording(host_client);
 394
 395         // make sure edict is not corrupt (from a level change for example)
 396         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 397
 398         if (host_client->netconnection)
 399         {
 400                 // free the client (the body stays around)
 401                 if (!crash)
 402                 {
 403                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 404                         unsigned char bufdata[8];
 405                         sizebuf_t buf;
 406                         memset(&buf, 0, sizeof(buf));
 407                         buf.data = bufdata;
 408                         buf.maxsize = sizeof(bufdata);
 409                         MSG_WriteByte(&buf, svc_disconnect);
 410                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 411                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 412                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 413                 }
 414                 // break the net connection
 415                 NetConn_Close(host_client->netconnection);
 416                 host_client->netconnection = NULL;
 417         }
 418
 419         // call qc ClientDisconnect function
 420         // LordHavoc: don't call QC if server is dead (avoids recursive
 421         // Host_Error in some mods when they run out of edicts)
 422         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 423         {
 424                 // call the prog function for removing a client
 425                 // this will set the body to a dead frame, among other things
 426                 int saveSelf = prog->globals.server->self;
 427                 host_client->clientconnectcalled = false;
 428                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 429                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 430                 prog->globals.server->self = saveSelf;
 431         }
 432
 433         // if a download is active, close it
 434         if (host_client->download_file)
 435         {
 436                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 437                 FS_Close(host_client->download_file);
 438                 host_client->download_file = NULL;
 439                 host_client->download_name[0] = 0;
 440                 host_client->download_expectedposition = 0;
 441                 host_client->download_started = false;
 442         }
 443
 444         // remove leaving player from scoreboard
 445         host_client->name[0] = 0;
 446         host_client->colors = 0;
 447         host_client->frags = 0;
 448         // send notification to all clients
 449         // get number of client manually just to make sure we get it right...
 450         i = host_client - svs.clients;
 451         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 452         MSG_WriteByte (&sv.reliable_datagram, i);
 453         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 454         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 455         MSG_WriteByte (&sv.reliable_datagram, i);
 456         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 457         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 458         MSG_WriteByte (&sv.reliable_datagram, i);
 459         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 460
 461         // free the client now
 462         if (host_client->entitydatabase)
 463                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 464         if (host_client->entitydatabase4)
 465                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 466         if (host_client->entitydatabase5)
 467                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 468
 469         if (sv.active)
 470         {
 471                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 472                 PRVM_ED_ClearEdict(host_client->edict);
 473         }
 474
 475         // clear the client struct (this sets active to false)
 476         memset(host_client, 0, sizeof(*host_client));
 477
 478         // update server listing on the master because player count changed
 479         // (which the master uses for filtering empty/full servers)
 480         NetConn_Heartbeat(1);
 481
 482         if (sv.loadgame)
 483         {
 484                 for (i = 0;i < svs.maxclients;i++)
 485                         if (svs.clients[i].active && !svs.clients[i].spawned)
 486                                 break;
 487                 if (i == svs.maxclients)
 488                 {
 489                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 490                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 491                 }
 492         }
 493 }
 494
 495 /*
 496 ==================
 497 Host_ShutdownServer
 498
 499 This only happens at the end of a game, not between levels
 500 ==================
 501 */
 502 void Host_ShutdownServer(void)
 503 {
 504         int i;
 505
 506         Con_DPrintf("Host_ShutdownServer\n");
 507
 508         if (!sv.active)
 509                 return;
 510
 511         NetConn_Heartbeat(2);
 512         NetConn_Heartbeat(2);
 513
 514 // make sure all the clients know we're disconnecting
 515         SV_VM_Begin();
 516         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 517                 if (host_client->active)
 518                         SV_DropClient(false); // server shutdown
 519         SV_VM_End();
 520
 521         NetConn_CloseServerPorts();
 522
 523         sv.active = false;
 524 //
 525 // clear structures
 526 //
 527         memset(&sv, 0, sizeof(sv));
 528         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 529 }
 530
 531
 532 //============================================================================
 533
 534 /*
 535 ===================
 536 Host_GetConsoleCommands
 537
 538 Add them exactly as if they had been typed at the console
 539 ===================
 540 */
 541 void Host_GetConsoleCommands (void)
 542 {
 543         char *cmd;
 544
 545         while (1)
 546         {
 547                 cmd = Sys_ConsoleInput ();
 548                 if (!cmd)
 549                         break;
 550                 Cbuf_AddText (cmd);
 551         }
 552 }
 553
 554 /*
 555 ==================
 556 Host_TimeReport
 557
 558 Returns a time report string, for example for
 559 ==================
 560 */
 561 const char *Host_TimingReport()
 562 {
 563         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);
 564 }
 565
 566 /*
 567 ==================
 568 Host_Frame
 569
 570 Runs all active servers
 571 ==================
 572 */
 573 static void Host_Init(void);
 574 void Host_Main(void)
 575 {
 576         double time1 = 0;
 577         double time2 = 0;
 578         double time3 = 0;
 579         double cl_timer, sv_timer;
 580         double clframetime, deltarealtime, oldrealtime;
 581         double wait;
 582         int pass1, pass2, pass3, i;
 583
 584         Host_Init();
 585
 586         cl_timer = 0;
 587         sv_timer = 0;
 588
 589         realtime = Sys_DoubleTime();
 590         for (;;)
 591         {
 592                 if (setjmp(host_abortframe))
 593                         continue;                       // something bad happened, or the server disconnected
 594
 595                 oldrealtime = realtime;
 596                 realtime = Sys_DoubleTime();
 597
 598                 deltarealtime = realtime - oldrealtime;
 599                 cl_timer += deltarealtime;
 600                 sv_timer += deltarealtime;
 601
 602                 svs.perf_acc_realtime += deltarealtime;
 603
 604                 // Look for clients who have spawned
 605                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 606                         if(host_client->spawned)
 607                                 if(host_client->netconnection)
 608                                         break;
 609                 if(i == svs.maxclients)
 610                 {
 611                         // Nobody is looking? Then we won't do timing...
 612                         // Instead, reset it to zero
 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                 else if(svs.perf_acc_realtime > 5)
 616                 {
 617                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 618                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 619                         if(svs.perf_acc_offset_samples > 0)
 620                         {
 621                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 622                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 623                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 624                         }
 625                         if(svs.perf_lost > 0)
 626                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 627                         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;
 628                 }
 629
 630                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 631                         Cvar_SetValue("slowmo", 0);
 632                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 633                         Cvar_SetValue("host_framerate", 0);
 634
 635                 // keep the random time dependent, but not when playing demos/benchmarking
 636                 if(!*sv_random_seed.string && !cls.demoplayback)
 637                         rand();
 638
 639                 cl.islocalgame = NetConn_IsLocalGame();
 640
 641                 // get new key events
 642                 Sys_SendKeyEvents();
 643
 644                 NetConn_UpdateSockets();
 645
 646                 Log_DestBuffer_Flush();
 647
 648                 // receive packets on each main loop iteration, as the main loop may
 649                 // be undersleeping due to select() detecting a new packet
 650                 if (sv.active)
 651                         NetConn_ServerFrame();
 652
 653                 Curl_Run();
 654
 655                 // check for commands typed to the host
 656                 Host_GetConsoleCommands();
 657
 658                 // when a server is running we only execute console commands on server frames
 659                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 660                 // otherwise we execute them on all frames
 661                 if (sv_timer > 0 || !sv.active)
 662                 {
 663                         // process console commands
 664                         Cbuf_Execute();
 665                 }
 666
 667                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 668
 669                 // if the accumulators haven't become positive yet, wait a while
 670                 if (cls.state == ca_dedicated)
 671                         wait = sv_timer * -1000000.0;
 672                 else if (!sv.active)
 673                         wait = cl_timer * -1000000.0;
 674                 else
 675                         wait = max(cl_timer, sv_timer) * -1000000.0;
 676                 if (wait > 100000)
 677                         wait = 100000;
 678
 679                 if (!cls.timedemo && wait > 0)
 680                 {
 681                         double time0 = Sys_DoubleTime();
 682                         if (sv_checkforpacketsduringsleep.integer)
 683                         {
 684                                 if (wait >= 1)
 685                                         NetConn_SleepMicroseconds((int)wait);
 686                         }
 687                         else
 688                         {
 689                                 if (wait >= 1000)
 690                                         Sys_Sleep((int)wait / 1000);
 691                         }
 692                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 693                         continue;
 694                 }
 695
 696         //-------------------
 697         //
 698         // server operations
 699         //
 700         //-------------------
 701
 702                 // limit the frametime steps to no more than 100ms each
 703                 if (cl_timer > 0.1)
 704                         cl_timer = 0.1;
 705                 if (sv_timer > 0.1)
 706                 {
 707                         svs.perf_acc_lost += (sv_timer - 0.1);
 708                         sv_timer = 0.1;
 709                 }
 710
 711                 if (sv.active && sv_timer > 0)
 712                 {
 713                         // execute one or more server frames, with an upper limit on how much
 714                         // execution time to spend on server frames to avoid freezing the game if
 715                         // the server is overloaded, this execution time limit means the game will
 716                         // slow down if the server is taking too long.
 717                         int framecount, framelimit = 1;
 718                         double advancetime, aborttime = 0;
 719                         float offset;
 720
 721                         // run the world state
 722                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 723
 724                         // stop running server frames if the wall time reaches this value
 725                         if (sys_ticrate.value <= 0)
 726                                 advancetime = sv_timer;
 727                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 728                         {
 729                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 730                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 731                                 framelimit = 10;
 732                                 aborttime = realtime + 0.1;
 733                         }
 734                         else
 735                         {
 736                                 advancetime = sys_ticrate.value;
 737                                 // listen servers can run multiple server frames per client frame
 738                                 if (cls.state == ca_connected)
 739                                 {
 740                                         framelimit = 10;
 741                                         aborttime = realtime + 0.1;
 742                                 }
 743                         }
 744                         advancetime = min(advancetime, 0.1);
 745
 746                         if(advancetime > 0)
 747                         {
 748                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 749                                 ++svs.perf_acc_offset_samples;
 750                                 svs.perf_acc_offset += offset;
 751                                 svs.perf_acc_offset_squared += offset * offset;
 752                                 if(svs.perf_acc_offset_max < offset)
 753                                         svs.perf_acc_offset_max = offset;
 754                         }
 755
 756                         // only advance time if not paused
 757                         // the game also pauses in singleplayer when menu or console is used
 758                         sv.frametime = advancetime * slowmo.value;
 759                         if (host_framerate.value)
 760                                 sv.frametime = host_framerate.value;
 761                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 762                                 sv.frametime = 0;
 763
 764                         // setup the VM frame
 765                         SV_VM_Begin();
 766
 767                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 768                         {
 769                                 sv_timer -= advancetime;
 770
 771                                 // move things around and think unless paused
 772                                 if (sv.frametime)
 773                                         SV_Physics();
 774
 775                                 // if this server frame took too long, break out of the loop
 776                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 777                                         break;
 778                         }
 779
 780                         // send all messages to the clients
 781                         SV_SendClientMessages();
 782
 783                         // end the server VM frame
 784                         SV_VM_End();
 785
 786                         // send an heartbeat if enough time has passed since the last one
 787                         NetConn_Heartbeat(0);
 788                 }
 789
 790         //-------------------
 791         //
 792         // client operations
 793         //
 794         //-------------------
 795
 796                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 797                 {
 798                         // decide the simulation time
 799                         if (cls.capturevideo.active)
 800                         {
 801                                 if (cls.capturevideo.realtime)
 802                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 803                                 else
 804                                 {
 805                                         clframetime = 1.0 / cls.capturevideo.framerate;
 806                                         cl.realframetime = max(cl_timer, clframetime);
 807                                 }
 808                         }
 809                         else if (vid_activewindow)
 810                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 811                         else
 812                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 813
 814                         // apply slowmo scaling
 815                         clframetime *= cl.movevars_timescale;
 816                         // scale playback speed of demos by slowmo cvar
 817                         if (cls.demoplayback)
 818                         {
 819                                 clframetime *= slowmo.value;
 820                                 // if demo playback is paused, don't advance time at all
 821                                 if (cls.demopaused)
 822                                         clframetime = 0;
 823                         }
 824
 825                         // host_framerate overrides all else
 826                         if (host_framerate.value)
 827                                 clframetime = host_framerate.value;
 828
 829                         if (cls.timedemo)
 830                                 clframetime = cl.realframetime = cl_timer;
 831
 832                         // deduct the frame time from the accumulator
 833                         cl_timer -= cl.realframetime;
 834
 835                         cl.oldtime = cl.time;
 836                         cl.time += clframetime;
 837
 838                         // Collect input into cmd
 839                         CL_Input();
 840
 841                         // check for new packets
 842                         NetConn_ClientFrame();
 843
 844                         // read a new frame from a demo if needed
 845                         CL_ReadDemoMessage();
 846
 847                         // now that packets have been read, send input to server
 848                         CL_SendMove();
 849
 850                         // update client world (interpolate entities, create trails, etc)
 851                         CL_UpdateWorld();
 852
 853                         // update video
 854                         if (host_speeds.integer)
 855                                 time1 = Sys_DoubleTime();
 856
 857                         //ui_update();
 858
 859                         CL_Video_Frame();
 860                         CL_Gecko_Frame();
 861
 862                         CL_UpdateScreen();
 863
 864                         if (host_speeds.integer)
 865                                 time2 = Sys_DoubleTime();
 866
 867                         // update audio
 868                         if(cl.csqc_usecsqclistener)
 869                         {
 870                                 S_Update(&cl.csqc_listenermatrix);
 871                                 cl.csqc_usecsqclistener = false;
 872                         }
 873                         else
 874                                 S_Update(&r_refdef.view.matrix);
 875
 876                         CDAudio_Update();
 877
 878                         if (host_speeds.integer)
 879                         {
 880                                 pass1 = (int)((time1 - time3)*1000000);
 881                                 time3 = Sys_DoubleTime();
 882                                 pass2 = (int)((time2 - time1)*1000000);
 883                                 pass3 = (int)((time3 - time2)*1000000);
 884                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 885                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 886                         }
 887                 }
 888
 889                 // if there is some time remaining from this frame, reset the timers
 890                 if (cl_timer >= 0)
 891                         cl_timer = 0;
 892                 if (sv_timer >= 0)
 893                 {
 894                         svs.perf_acc_lost += sv_timer;
 895                         sv_timer = 0;
 896                 }
 897
 898                 host_framecount++;
 899         }
 900 }
 901
 902 //============================================================================
 903
 904 qboolean vid_opened = false;
 905 void Host_StartVideo(void)
 906 {
 907         if (!vid_opened && cls.state != ca_dedicated)
 908         {
 909                 vid_opened = true;
 910                 VID_Start();
 911                 CDAudio_Startup();
 912         }
 913 }
 914
 915 char engineversion[128];
 916
 917 qboolean sys_nostdout = false;
 918
 919 extern void Render_Init(void);
 920 extern void Mathlib_Init(void);
 921 extern void FS_Init(void);
 922 extern void FS_Shutdown(void);
 923 extern void PR_Cmd_Init(void);
 924 extern void COM_Init_Commands(void);
 925 extern void FS_Init_Commands(void);
 926 extern qboolean host_stuffcmdsrun;
 927
 928 /*
 929 ====================
 930 Host_Init
 931 ====================
 932 */
 933 static void Host_Init (void)
 934 {
 935         int i;
 936         const char* os;
 937
 938         if (COM_CheckParm("-profilegameonly"))
 939                 Sys_AllowProfiling(false);
 940
 941         // LordHavoc: quake never seeded the random number generator before... heh
 942         if (COM_CheckParm("-benchmark"))
 943                 srand(0); // predictable random sequence for -benchmark
 944         else
 945                 srand(time(NULL));
 946
 947         // FIXME: this is evil, but possibly temporary
 948 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 949         if (COM_CheckParm("-developer"))
 950         {
 951                 developer.value = developer.integer = 100;
 952                 developer.string = "100";
 953         }
 954
 955         if (COM_CheckParm("-developer2"))
 956         {
 957                 developer.value = developer.integer = 100;
 958                 developer.string = "100";
 959                 developer_memory.value = developer_memory.integer = 100;
 960                 developer.string = "100";
 961                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 962                 developer_memorydebug.string = "100";
 963         }
 964
 965 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 966         if (COM_CheckParm("-nostdout"))
 967                 sys_nostdout = 1;
 968
 969         // used by everything
 970         Memory_Init();
 971
 972         // initialize console command/cvar/alias/command execution systems
 973         Cmd_Init();
 974
 975         // initialize memory subsystem cvars/commands
 976         Memory_Init_Commands();
 977
 978         // initialize console and logging and its cvars/commands
 979         Con_Init();
 980
 981         // initialize various cvars that could not be initialized earlier
 982         Curl_Init_Commands();
 983         Cmd_Init_Commands();
 984         Sys_Init_Commands();
 985         COM_Init_Commands();
 986         FS_Init_Commands();
 987
 988         // initialize console window (only used by sys_win.c)
 989         Sys_InitConsole();
 990
 991         // detect gamemode from commandline options or executable name
 992         COM_InitGameType();
 993
 994         // construct a version string for the corner of the console
 995 #if defined(__linux__)
 996         os = "Linux";
 997 #elif defined(WIN32)
 998         os = "Windows";
 999 #elif defined(__FreeBSD__)
1000         os = "FreeBSD";
1001 #elif defined(__NetBSD__)
1002         os = "NetBSD";
1003 #elif defined(__OpenBSD__)
1004         os = "OpenBSD";
1005 #elif defined(MACOSX)
1006         os = "Mac OS X";
1007 #elif defined(__MORPHOS__)
1008         os = "MorphOS";
1009 #else
1010         os = "Unknown";
1011 #endif
1012         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1013         Con_Printf("%s\n", engineversion);
1014
1015         // initialize ixtable
1016         Mathlib_Init();
1017
1018         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1019         FS_Init();
1020
1021         NetConn_Init();
1022         Curl_Init();
1023         //PR_Init();
1024         //PR_Cmd_Init();
1025         PRVM_Init();
1026         Mod_Init();
1027         World_Init();
1028         SV_Init();
1029         Host_InitCommands();
1030         Host_InitLocal();
1031         Host_ServerOptions();
1032
1033         if (cls.state != ca_dedicated)
1034         {
1035                 Con_Printf("Initializing client\n");
1036
1037                 R_Modules_Init();
1038                 Palette_Init();
1039                 MR_Init_Commands();
1040                 VID_Shared_Init();
1041                 VID_Init();
1042                 Render_Init();
1043                 S_Init();
1044                 CDAudio_Init();
1045                 Key_Init();
1046                 V_Init();
1047                 CL_Init();
1048         }
1049
1050         // set up the default startmap_sp and startmap_dm aliases (mods can
1051         // override these) and then execute the quake.rc startup script
1052         if (gamemode == GAME_NEHAHRA)
1053                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1054         else if (gamemode == GAME_TRANSFUSION)
1055                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1056         else if (gamemode == GAME_TEU)
1057                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1058         else
1059                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1060         Cbuf_Execute();
1061
1062         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1063         if (!host_stuffcmdsrun)
1064         {
1065                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1066                 Cbuf_Execute();
1067         }
1068
1069         // put up the loading image so the user doesn't stare at a black screen...
1070         SCR_BeginLoadingPlaque();
1071
1072         // FIXME: put this into some neat design, but the menu should be allowed to crash
1073         // without crashing the whole game, so this should just be a short-time solution
1074
1075         // here comes the not so critical stuff
1076         if (setjmp(host_abortframe)) {
1077                 return;
1078         }
1079
1080         if (cls.state != ca_dedicated)
1081         {
1082                 MR_Init();
1083         }
1084
1085         // check for special benchmark mode
1086 // 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)
1087         i = COM_CheckParm("-benchmark");
1088         if (i && i + 1 < com_argc)
1089         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1090         {
1091                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1092                 Cbuf_Execute();
1093         }
1094
1095         // check for special demo mode
1096 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1097         i = COM_CheckParm("-demo");
1098         if (i && i + 1 < com_argc)
1099         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1100         {
1101                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1102                 Cbuf_Execute();
1103         }
1104
1105 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1106         i = COM_CheckParm("-capturedemo");
1107         if (i && i + 1 < com_argc)
1108         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1109         {
1110                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1111                 Cbuf_Execute();
1112         }
1113
1114         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1115         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1116         {
1117                 Cbuf_AddText("startmap_dm\n");
1118                 Cbuf_Execute();
1119         }
1120
1121         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1122         {
1123                 Cbuf_AddText("togglemenu\n");
1124                 Cbuf_Execute();
1125         }
1126
1127         Con_DPrint("========Initialized=========\n");
1128
1129         //Host_StartVideo();
1130 }
1131
1132
1133 /*
1134 ===============
1135 Host_Shutdown
1136
1137 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1138 to run quit through here before the final handoff to the sys code.
1139 ===============
1140 */
1141 void Host_Shutdown(void)
1142 {
1143         static qboolean isdown = false;
1144
1145         if (isdown)
1146         {
1147                 Con_Print("recursive shutdown\n");
1148                 return;
1149         }
1150         if (setjmp(host_abortframe))
1151         {
1152                 Con_Print("aborted the quitting frame?!?\n");
1153                 return;
1154         }
1155         isdown = true;
1156
1157         // be quiet while shutting down
1158         S_StopAllSounds();
1159
1160         // disconnect client from server if active
1161         CL_Disconnect();
1162
1163         // shut down local server if active
1164         Host_ShutdownServer ();
1165
1166         // Shutdown menu
1167         if(MR_Shutdown)
1168                 MR_Shutdown();
1169
1170         // AK shutdown PRVM
1171         // AK hmm, no PRVM_Shutdown(); yet
1172
1173         CL_Gecko_Shutdown();
1174         CL_Video_Shutdown();
1175
1176         Host_SaveConfig();
1177
1178         CDAudio_Shutdown ();
1179         S_Terminate ();
1180         Curl_Shutdown ();
1181         NetConn_Shutdown ();
1182         //PR_Shutdown ();
1183
1184         if (cls.state != ca_dedicated)
1185         {
1186                 R_Modules_Shutdown();
1187                 VID_Shutdown();
1188         }
1189
1190         Cmd_Shutdown();
1191         CL_Shutdown();
1192         Sys_Shutdown();
1193         Log_Close();
1194         FS_Shutdown();
1195         Memory_Shutdown();
1196 }
1197