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_video.h"
  28 #include "progsvm.h"
  29 #include "csprogs.h"
  30 #include "sv_demo.h"
  31
  32 /*
  33
  34 A server can always be started, even if the system started out as a client
  35 to a remote system.
  36
  37 A client can NOT be started if the system started as a dedicated server.
  38
  39 Memory is cleared / released when a server or client begins, not when they end.
  40
  41 */
  42
  43 // how many frames have occurred
  44 // (checked by Host_Error and Host_SaveConfig_f)
  45 int host_framecount = 0;
  46 // LordHavoc: set when quit is executed
  47 qboolean host_shuttingdown = false;
  48
  49 // the real time since application started, without any slowmo or clamping
  50 double realtime;
  51
  52 // current client
  53 client_t *host_client;
  54
  55 jmp_buf host_abortframe;
  56
  57 // pretend frames take this amount of time (in seconds), 0 = realtime
  58 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"};
  59 // shows time used by certain subsystems
  60 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
  61 // LordHavoc: framerate upper cap
  62 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "1000", "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)"};
  63 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"};
  64
  65 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  66 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  67
  68 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  69 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  70
  71 /*
  72 ================
  73 Host_AbortCurrentFrame
  74
  75 aborts the current host frame and goes on with the next one
  76 ================
  77 */
  78 void Host_AbortCurrentFrame(void)
  79 {
  80         longjmp (host_abortframe, 1);
  81 }
  82
  83 /*
  84 ================
  85 Host_Error
  86
  87 This shuts down both the client and server
  88 ================
  89 */
  90 void Host_Error (const char *error, ...)
  91 {
  92         static char hosterrorstring1[MAX_INPUTLINE];
  93         static char hosterrorstring2[MAX_INPUTLINE];
  94         static qboolean hosterror = false;
  95         va_list argptr;
  96
  97         // turn off rcon redirect if it was active when the crash occurred
  98         rcon_redirect = false;
  99
 100         va_start (argptr,error);
 101         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 102         va_end (argptr);
 103
 104         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 105
 106         // LordHavoc: if crashing very early, or currently shutting down, do
 107         // Sys_Error instead
 108         if (host_framecount < 3 || host_shuttingdown)
 109                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 110
 111         if (hosterror)
 112                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 113         hosterror = true;
 114
 115         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 116
 117         CL_Parse_DumpPacket();
 118
 119         CL_Parse_ErrorCleanUp();
 120
 121         //PR_Crash();
 122
 123         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 124         PRVM_Crash();
 125
 126
 127         Host_ShutdownServer ();
 128
 129         if (cls.state == ca_dedicated)
 130                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 131
 132         CL_Disconnect ();
 133         cls.demonum = -1;
 134
 135         hosterror = false;
 136
 137         Host_AbortCurrentFrame();
 138 }
 139
 140 void Host_ServerOptions (void)
 141 {
 142         int i;
 143
 144         // general default
 145         svs.maxclients = 8;
 146
 147 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 148 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 149         // if no client is in the executable or -dedicated is specified on
 150         // commandline, start a dedicated server
 151         i = COM_CheckParm ("-dedicated");
 152         if (i || !cl_available)
 153         {
 154                 cls.state = ca_dedicated;
 155                 // check for -dedicated specifying how many players
 156                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 157                         svs.maxclients = atoi (com_argv[i+1]);
 158                 if (COM_CheckParm ("-listen"))
 159                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 160                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 161                 Cvar_SetValue("sv_public", 1);
 162         }
 163         else if (cl_available)
 164         {
 165                 // client exists and not dedicated, check if -listen is specified
 166                 cls.state = ca_disconnected;
 167                 i = COM_CheckParm ("-listen");
 168                 if (i)
 169                 {
 170                         // default players unless specified
 171                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 172                                 svs.maxclients = atoi (com_argv[i+1]);
 173                 }
 174                 else
 175                 {
 176                         // default players in some games, singleplayer in most
 177                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 178                                 svs.maxclients = 1;
 179                 }
 180         }
 181
 182         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 183
 184         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 185
 186         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 187                 Cvar_SetValueQuick(&deathmatch, 1);
 188 }
 189
 190 /*
 191 =======================
 192 Host_InitLocal
 193 ======================
 194 */
 195 void Host_SaveConfig_f(void);
 196 void Host_LoadConfig_f(void);
 197 static void Host_InitLocal (void)
 198 {
 199         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg immediately (also automatic when quitting)");
 200         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 201
 202         Cvar_RegisterVariable (&host_framerate);
 203         Cvar_RegisterVariable (&host_speeds);
 204         Cvar_RegisterVariable (&cl_maxfps);
 205         Cvar_RegisterVariable (&cl_maxidlefps);
 206
 207         Cvar_RegisterVariable (&developer);
 208         Cvar_RegisterVariable (&developer_entityparsing);
 209
 210         Cvar_RegisterVariable (&timestamps);
 211         Cvar_RegisterVariable (&timeformat);
 212 }
 213
 214
 215 /*
 216 ===============
 217 Host_SaveConfig_f
 218
 219 Writes key bindings and archived cvars to config.cfg
 220 ===============
 221 */
 222 void Host_SaveConfig_f(void)
 223 {
 224         qfile_t *f;
 225
 226 // dedicated servers initialize the host but don't parse and set the
 227 // config.cfg cvars
 228         // LordHavoc: don't save a config if it crashed in startup
 229         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 230         {
 231                 f = FS_Open ("config.cfg", "wb", false, false);
 232                 if (!f)
 233                 {
 234                         Con_Print("Couldn't write config.cfg.\n");
 235                         return;
 236                 }
 237
 238                 Key_WriteBindings (f);
 239                 Cvar_WriteVariables (f);
 240
 241                 FS_Close (f);
 242         }
 243 }
 244
 245
 246 /*
 247 ===============
 248 Host_LoadConfig_f
 249
 250 Resets key bindings and cvars to defaults and then reloads scripts
 251 ===============
 252 */
 253 void Host_LoadConfig_f(void)
 254 {
 255         // unlock the cvar default strings so they can be updated by the new default.cfg
 256         Cvar_UnlockDefaults();
 257         // reset cvars to their defaults, and then exec startup scripts again
 258         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 259 }
 260
 261 /*
 262 =================
 263 SV_ClientPrint
 264
 265 Sends text across to be displayed
 266 FIXME: make this just a stuffed echo?
 267 =================
 268 */
 269 void SV_ClientPrint(const char *msg)
 270 {
 271         if (host_client->netconnection)
 272         {
 273                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 274                 MSG_WriteString(&host_client->netconnection->message, msg);
 275         }
 276 }
 277
 278 /*
 279 =================
 280 SV_ClientPrintf
 281
 282 Sends text across to be displayed
 283 FIXME: make this just a stuffed echo?
 284 =================
 285 */
 286 void SV_ClientPrintf(const char *fmt, ...)
 287 {
 288         va_list argptr;
 289         char msg[MAX_INPUTLINE];
 290
 291         va_start(argptr,fmt);
 292         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 293         va_end(argptr);
 294
 295         SV_ClientPrint(msg);
 296 }
 297
 298 /*
 299 =================
 300 SV_BroadcastPrint
 301
 302 Sends text to all active clients
 303 =================
 304 */
 305 void SV_BroadcastPrint(const char *msg)
 306 {
 307         int i;
 308         client_t *client;
 309
 310         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 311         {
 312                 if (client->active && client->netconnection)
 313                 {
 314                         MSG_WriteByte(&client->netconnection->message, svc_print);
 315                         MSG_WriteString(&client->netconnection->message, msg);
 316                 }
 317         }
 318
 319         if (sv_echobprint.integer && cls.state == ca_dedicated)
 320                 Con_Print(msg);
 321 }
 322
 323 /*
 324 =================
 325 SV_BroadcastPrintf
 326
 327 Sends text to all active clients
 328 =================
 329 */
 330 void SV_BroadcastPrintf(const char *fmt, ...)
 331 {
 332         va_list argptr;
 333         char msg[MAX_INPUTLINE];
 334
 335         va_start(argptr,fmt);
 336         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 337         va_end(argptr);
 338
 339         SV_BroadcastPrint(msg);
 340 }
 341
 342 /*
 343 =================
 344 Host_ClientCommands
 345
 346 Send text over to the client to be executed
 347 =================
 348 */
 349 void Host_ClientCommands(const char *fmt, ...)
 350 {
 351         va_list argptr;
 352         char string[MAX_INPUTLINE];
 353
 354         if (!host_client->netconnection)
 355                 return;
 356
 357         va_start(argptr,fmt);
 358         dpvsnprintf(string, sizeof(string), fmt, argptr);
 359         va_end(argptr);
 360
 361         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 362         MSG_WriteString(&host_client->netconnection->message, string);
 363 }
 364
 365 /*
 366 =====================
 367 SV_DropClient
 368
 369 Called when the player is getting totally kicked off the host
 370 if (crash = true), don't bother sending signofs
 371 =====================
 372 */
 373 void SV_DropClient(qboolean crash)
 374 {
 375         int i;
 376         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 377
 378         SV_StopDemoRecording(host_client);
 379
 380         // make sure edict is not corrupt (from a level change for example)
 381         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 382
 383         if (host_client->netconnection)
 384         {
 385                 // free the client (the body stays around)
 386                 if (!crash)
 387                 {
 388                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 389                         unsigned char bufdata[8];
 390                         sizebuf_t buf;
 391                         memset(&buf, 0, sizeof(buf));
 392                         buf.data = bufdata;
 393                         buf.maxsize = sizeof(bufdata);
 394                         MSG_WriteByte(&buf, svc_disconnect);
 395                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 396                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 397                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 398                 }
 399                 // break the net connection
 400                 NetConn_Close(host_client->netconnection);
 401                 host_client->netconnection = NULL;
 402         }
 403
 404         // call qc ClientDisconnect function
 405         // LordHavoc: don't call QC if server is dead (avoids recursive
 406         // Host_Error in some mods when they run out of edicts)
 407         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 408         {
 409                 // call the prog function for removing a client
 410                 // this will set the body to a dead frame, among other things
 411                 int saveSelf = prog->globals.server->self;
 412                 host_client->clientconnectcalled = false;
 413                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 414                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 415                 prog->globals.server->self = saveSelf;
 416         }
 417
 418         // if a download is active, close it
 419         if (host_client->download_file)
 420         {
 421                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 422                 FS_Close(host_client->download_file);
 423                 host_client->download_file = NULL;
 424                 host_client->download_name[0] = 0;
 425                 host_client->download_expectedposition = 0;
 426                 host_client->download_started = false;
 427         }
 428
 429         // remove leaving player from scoreboard
 430         host_client->name[0] = 0;
 431         host_client->colors = 0;
 432         host_client->frags = 0;
 433         // send notification to all clients
 434         // get number of client manually just to make sure we get it right...
 435         i = host_client - svs.clients;
 436         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 437         MSG_WriteByte (&sv.reliable_datagram, i);
 438         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 439         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 440         MSG_WriteByte (&sv.reliable_datagram, i);
 441         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 442         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 443         MSG_WriteByte (&sv.reliable_datagram, i);
 444         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 445
 446         // free the client now
 447         if (host_client->entitydatabase)
 448                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 449         if (host_client->entitydatabase4)
 450                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 451         if (host_client->entitydatabase5)
 452                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 453
 454         if (sv.active)
 455         {
 456                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 457                 PRVM_ED_ClearEdict(host_client->edict);
 458         }
 459
 460         // clear the client struct (this sets active to false)
 461         memset(host_client, 0, sizeof(*host_client));
 462
 463         // update server listing on the master because player count changed
 464         // (which the master uses for filtering empty/full servers)
 465         NetConn_Heartbeat(1);
 466
 467         if (sv.loadgame)
 468         {
 469                 for (i = 0;i < svs.maxclients;i++)
 470                         if (svs.clients[i].active && !svs.clients[i].spawned)
 471                                 break;
 472                 if (i == svs.maxclients)
 473                 {
 474                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 475                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 476                 }
 477         }
 478 }
 479
 480 /*
 481 ==================
 482 Host_ShutdownServer
 483
 484 This only happens at the end of a game, not between levels
 485 ==================
 486 */
 487 void Host_ShutdownServer(void)
 488 {
 489         int i;
 490
 491         Con_DPrintf("Host_ShutdownServer\n");
 492
 493         if (!sv.active)
 494                 return;
 495
 496         NetConn_Heartbeat(2);
 497         NetConn_Heartbeat(2);
 498
 499 // make sure all the clients know we're disconnecting
 500         SV_VM_Begin();
 501         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 502                 if (host_client->active)
 503                         SV_DropClient(false); // server shutdown
 504         SV_VM_End();
 505
 506         NetConn_CloseServerPorts();
 507
 508         sv.active = false;
 509 //
 510 // clear structures
 511 //
 512         memset(&sv, 0, sizeof(sv));
 513         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 514 }
 515
 516
 517 //============================================================================
 518
 519 /*
 520 ===================
 521 Host_GetConsoleCommands
 522
 523 Add them exactly as if they had been typed at the console
 524 ===================
 525 */
 526 void Host_GetConsoleCommands (void)
 527 {
 528         char *cmd;
 529
 530         while (1)
 531         {
 532                 cmd = Sys_ConsoleInput ();
 533                 if (!cmd)
 534                         break;
 535                 Cbuf_AddText (cmd);
 536         }
 537 }
 538
 539 /*
 540 ==================
 541 Host_TimeReport
 542
 543 Returns a time report string, for example for
 544 ==================
 545 */
 546 const char *Host_TimingReport()
 547 {
 548         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);
 549 }
 550
 551 /*
 552 ==================
 553 Host_Frame
 554
 555 Runs all active servers
 556 ==================
 557 */
 558 static void Host_Init(void);
 559 void Host_Main(void)
 560 {
 561         double time1 = 0;
 562         double time2 = 0;
 563         double time3 = 0;
 564         double cl_timer, sv_timer;
 565         double clframetime, deltarealtime, oldrealtime;
 566         double wait;
 567         int pass1, pass2, pass3, i;
 568
 569         Host_Init();
 570
 571         cl_timer = 0;
 572         sv_timer = 0;
 573
 574         realtime = Sys_DoubleTime();
 575         for (;;)
 576         {
 577                 if (setjmp(host_abortframe))
 578                         continue;                       // something bad happened, or the server disconnected
 579
 580                 oldrealtime = realtime;
 581                 realtime = Sys_DoubleTime();
 582
 583                 deltarealtime = realtime - oldrealtime;
 584                 cl_timer += deltarealtime;
 585                 sv_timer += deltarealtime;
 586
 587                 svs.perf_acc_realtime += deltarealtime;
 588
 589                 // Look for clients who have spawned
 590                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 591                         if(host_client->spawned)
 592                                 if(host_client->netconnection)
 593                                         break;
 594                 if(i == svs.maxclients)
 595                 {
 596                         // Nobody is looking? Then we won't do timing...
 597                         // Instead, reset it to zero
 598                         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;
 599                 }
 600                 else if(svs.perf_acc_realtime > 5)
 601                 {
 602                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 603                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 604                         if(svs.perf_acc_offset_samples > 0)
 605                         {
 606                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 607                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 608                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 609                         }
 610                         if(svs.perf_lost > 0)
 611                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 612                         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;
 613                 }
 614
 615                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 616                         Cvar_SetValue("slowmo", 0);
 617                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 618                         Cvar_SetValue("host_framerate", 0);
 619
 620                 // keep the random time dependent, but not when playing demos/benchmarking
 621                 if(!*sv_random_seed.string && !cls.demoplayback)
 622                         rand();
 623
 624                 cl.islocalgame = NetConn_IsLocalGame();
 625
 626                 // get new key events
 627                 Sys_SendKeyEvents();
 628
 629                 NetConn_UpdateSockets();
 630
 631                 Log_DestBuffer_Flush();
 632
 633                 // receive packets on each main loop iteration, as the main loop may
 634                 // be undersleeping due to select() detecting a new packet
 635                 if (sv.active)
 636                         NetConn_ServerFrame();
 637
 638                 Curl_Run();
 639
 640                 // check for commands typed to the host
 641                 Host_GetConsoleCommands();
 642
 643                 // when a server is running we only execute console commands on server frames
 644                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 645                 // otherwise we execute them on all frames
 646                 if (sv_timer > 0 || !sv.active)
 647                 {
 648                         // process console commands
 649                         Cbuf_Execute();
 650                 }
 651
 652                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 653
 654                 // if the accumulators haven't become positive yet, wait a while
 655                 if (cls.state == ca_dedicated)
 656                         wait = sv_timer * -1000000.0;
 657                 else if (!sv.active)
 658                         wait = cl_timer * -1000000.0;
 659                 else
 660                         wait = max(cl_timer, sv_timer) * -1000000.0;
 661                 if (wait > 100000)
 662                         wait = 100000;
 663
 664                 if (!cls.timedemo && wait > 0)
 665                 {
 666                         double time0 = Sys_DoubleTime();
 667                         if (sv_checkforpacketsduringsleep.integer)
 668                         {
 669                                 if (wait >= 1)
 670                                         NetConn_SleepMicroseconds((int)wait);
 671                         }
 672                         else
 673                         {
 674                                 if (wait >= 1000)
 675                                         Sys_Sleep((int)wait / 1000);
 676                         }
 677                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 678                         continue;
 679                 }
 680
 681         //-------------------
 682         //
 683         // server operations
 684         //
 685         //-------------------
 686
 687                 // limit the frametime steps to no more than 100ms each
 688                 if (cl_timer > 0.1)
 689                         cl_timer = 0.1;
 690                 if (sv_timer > 0.1)
 691                 {
 692                         svs.perf_acc_lost += (sv_timer - 0.1);
 693                         sv_timer = 0.1;
 694                 }
 695
 696                 if (sv.active && sv_timer > 0)
 697                 {
 698                         // execute one or more server frames, with an upper limit on how much
 699                         // execution time to spend on server frames to avoid freezing the game if
 700                         // the server is overloaded, this execution time limit means the game will
 701                         // slow down if the server is taking too long.
 702                         int framecount, framelimit = 1;
 703                         double advancetime, aborttime = 0;
 704                         float offset;
 705
 706                         // run the world state
 707                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 708
 709                         // stop running server frames if the wall time reaches this value
 710                         if (sys_ticrate.value <= 0)
 711                                 advancetime = sv_timer;
 712                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 713                         {
 714                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 715                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 716                                 framelimit = 10;
 717                                 aborttime = realtime + 0.1;
 718                         }
 719                         else
 720                         {
 721                                 advancetime = sys_ticrate.value;
 722                                 // listen servers can run multiple server frames per client frame
 723                                 if (cls.state == ca_connected)
 724                                 {
 725                                         framelimit = 10;
 726                                         aborttime = realtime + 0.1;
 727                                 }
 728                         }
 729                         advancetime = min(advancetime, 0.1);
 730
 731                         if(advancetime > 0)
 732                         {
 733                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 734                                 ++svs.perf_acc_offset_samples;
 735                                 svs.perf_acc_offset += offset;
 736                                 svs.perf_acc_offset_squared += offset * offset;
 737                                 if(svs.perf_acc_offset_max < offset)
 738                                         svs.perf_acc_offset_max = offset;
 739                         }
 740
 741                         // only advance time if not paused
 742                         // the game also pauses in singleplayer when menu or console is used
 743                         sv.frametime = advancetime * slowmo.value;
 744                         if (host_framerate.value)
 745                                 sv.frametime = host_framerate.value;
 746                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 747                                 sv.frametime = 0;
 748
 749                         // setup the VM frame
 750                         SV_VM_Begin();
 751
 752                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 753                         {
 754                                 sv_timer -= advancetime;
 755
 756                                 // move things around and think unless paused
 757                                 if (sv.frametime)
 758                                         SV_Physics();
 759
 760                                 // if this server frame took too long, break out of the loop
 761                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 762                                         break;
 763                         }
 764
 765                         // send all messages to the clients
 766                         SV_SendClientMessages();
 767
 768                         // end the server VM frame
 769                         SV_VM_End();
 770
 771                         // send an heartbeat if enough time has passed since the last one
 772                         NetConn_Heartbeat(0);
 773                 }
 774
 775         //-------------------
 776         //
 777         // client operations
 778         //
 779         //-------------------
 780
 781                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 782                 {
 783                         // decide the simulation time
 784                         if (cls.capturevideo.active)
 785                         {
 786                                 if (cls.capturevideo.realtime)
 787                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 788                                 else
 789                                 {
 790                                         clframetime = 1.0 / cls.capturevideo.framerate;
 791                                         cl.realframetime = max(cl_timer, clframetime);
 792                                 }
 793                         }
 794                         else if (vid_activewindow)
 795                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 796                         else
 797                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 798
 799                         // apply slowmo scaling
 800                         clframetime *= cl.movevars_timescale;
 801                         // scale playback speed of demos by slowmo cvar
 802                         if (cls.demoplayback)
 803                         {
 804                                 clframetime *= slowmo.value;
 805                                 // if demo playback is paused, don't advance time at all
 806                                 if (cls.demopaused)
 807                                         clframetime = 0;
 808                         }
 809
 810                         // host_framerate overrides all else
 811                         if (host_framerate.value)
 812                                 clframetime = host_framerate.value;
 813
 814                         if (cls.timedemo)
 815                                 clframetime = cl.realframetime = cl_timer;
 816
 817                         // deduct the frame time from the accumulator
 818                         cl_timer -= cl.realframetime;
 819
 820                         cl.oldtime = cl.time;
 821                         cl.time += clframetime;
 822
 823                         // Collect input into cmd
 824                         CL_Input();
 825
 826                         // check for new packets
 827                         NetConn_ClientFrame();
 828
 829                         // read a new frame from a demo if needed
 830                         CL_ReadDemoMessage();
 831
 832                         // now that packets have been read, send input to server
 833                         CL_SendMove();
 834
 835                         // update client world (interpolate entities, create trails, etc)
 836                         CL_UpdateWorld();
 837
 838                         // update video
 839                         if (host_speeds.integer)
 840                                 time1 = Sys_DoubleTime();
 841
 842                         //ui_update();
 843
 844                         CL_VideoFrame();
 845
 846                         CL_UpdateScreen();
 847
 848                         if (host_speeds.integer)
 849                                 time2 = Sys_DoubleTime();
 850
 851                         // update audio
 852                         if(cl.csqc_usecsqclistener)
 853                         {
 854                                 S_Update(&cl.csqc_listenermatrix);
 855                                 cl.csqc_usecsqclistener = false;
 856                         }
 857                         else
 858                                 S_Update(&r_view.matrix);
 859
 860                         CDAudio_Update();
 861
 862                         if (host_speeds.integer)
 863                         {
 864                                 pass1 = (int)((time1 - time3)*1000000);
 865                                 time3 = Sys_DoubleTime();
 866                                 pass2 = (int)((time2 - time1)*1000000);
 867                                 pass3 = (int)((time3 - time2)*1000000);
 868                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 869                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 870                         }
 871                 }
 872
 873                 // if there is some time remaining from this frame, reset the timers
 874                 if (cl_timer >= 0)
 875                         cl_timer = 0;
 876                 if (sv_timer >= 0)
 877                 {
 878                         svs.perf_acc_lost += sv_timer;
 879                         sv_timer = 0;
 880                 }
 881
 882                 host_framecount++;
 883         }
 884 }
 885
 886 //============================================================================
 887
 888 qboolean vid_opened = false;
 889 void Host_StartVideo(void)
 890 {
 891         if (!vid_opened && cls.state != ca_dedicated)
 892         {
 893                 vid_opened = true;
 894                 VID_Start();
 895                 CDAudio_Startup();
 896         }
 897 }
 898
 899 char engineversion[128];
 900
 901 qboolean sys_nostdout = false;
 902
 903 extern void Render_Init(void);
 904 extern void Mathlib_Init(void);
 905 extern void FS_Init(void);
 906 extern void FS_Shutdown(void);
 907 extern void PR_Cmd_Init(void);
 908 extern void COM_Init_Commands(void);
 909 extern void FS_Init_Commands(void);
 910 extern qboolean host_stuffcmdsrun;
 911
 912 /*
 913 ====================
 914 Host_Init
 915 ====================
 916 */
 917 static void Host_Init (void)
 918 {
 919         int i;
 920         const char* os;
 921
 922         if (COM_CheckParm("-profilegameonly"))
 923                 Sys_AllowProfiling(false);
 924
 925         // LordHavoc: quake never seeded the random number generator before... heh
 926         if (COM_CheckParm("-benchmark"))
 927                 srand(0); // predictable random sequence for -benchmark
 928         else
 929                 srand(time(NULL));
 930
 931         // FIXME: this is evil, but possibly temporary
 932 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 933         if (COM_CheckParm("-developer"))
 934         {
 935                 developer.value = developer.integer = 100;
 936                 developer.string = "100";
 937         }
 938
 939         if (COM_CheckParm("-developer2"))
 940         {
 941                 developer.value = developer.integer = 100;
 942                 developer.string = "100";
 943                 developer_memory.value = developer_memory.integer = 100;
 944                 developer.string = "100";
 945                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 946                 developer_memorydebug.string = "100";
 947         }
 948
 949 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 950         if (COM_CheckParm("-nostdout"))
 951                 sys_nostdout = 1;
 952
 953         // used by everything
 954         Memory_Init();
 955
 956         // initialize console command/cvar/alias/command execution systems
 957         Cmd_Init();
 958
 959         // initialize memory subsystem cvars/commands
 960         Memory_Init_Commands();
 961
 962         // initialize console and logging and its cvars/commands
 963         Con_Init();
 964
 965         // initialize various cvars that could not be initialized earlier
 966         Curl_Init_Commands();
 967         Cmd_Init_Commands();
 968         Sys_Init_Commands();
 969         COM_Init_Commands();
 970         FS_Init_Commands();
 971
 972         // initialize console window (only used by sys_win.c)
 973         Sys_InitConsole();
 974
 975         // detect gamemode from commandline options or executable name
 976         COM_InitGameType();
 977
 978         // construct a version string for the corner of the console
 979 #if defined(__linux__)
 980         os = "Linux";
 981 #elif defined(WIN32)
 982         os = "Windows";
 983 #elif defined(__FreeBSD__)
 984         os = "FreeBSD";
 985 #elif defined(__NetBSD__)
 986         os = "NetBSD";
 987 #elif defined(__OpenBSD__)
 988         os = "OpenBSD";
 989 #elif defined(MACOSX)
 990         os = "Mac OS X";
 991 #elif defined(__MORPHOS__)
 992         os = "MorphOS";
 993 #else
 994         os = "Unknown";
 995 #endif
 996         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
 997         Con_Printf("%s\n", engineversion);
 998
 999         // initialize ixtable
1000         Mathlib_Init();
1001
1002         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1003         FS_Init();
1004
1005         NetConn_Init();
1006         Curl_Init();
1007         //PR_Init();
1008         //PR_Cmd_Init();
1009         PRVM_Init();
1010         Mod_Init();
1011         World_Init();
1012         SV_Init();
1013         Host_InitCommands();
1014         Host_InitLocal();
1015         Host_ServerOptions();
1016
1017         if (cls.state != ca_dedicated)
1018         {
1019                 Con_Printf("Initializing client\n");
1020
1021                 R_Modules_Init();
1022                 Palette_Init();
1023                 MR_Init_Commands();
1024                 VID_Shared_Init();
1025                 VID_Init();
1026                 Render_Init();
1027                 S_Init();
1028                 CDAudio_Init();
1029                 Key_Init();
1030                 V_Init();
1031                 CL_Init();
1032         }
1033
1034         // set up the default startmap_sp and startmap_dm aliases (mods can
1035         // override these) and then execute the quake.rc startup script
1036         if (gamemode == GAME_NEHAHRA)
1037                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1038         else if (gamemode == GAME_TRANSFUSION)
1039                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1040         else if (gamemode == GAME_TEU)
1041                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1042         else
1043                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1044         Cbuf_Execute();
1045
1046         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1047         if (!host_stuffcmdsrun)
1048         {
1049                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1050                 Cbuf_Execute();
1051         }
1052
1053         // put up the loading image so the user doesn't stare at a black screen...
1054         SCR_BeginLoadingPlaque();
1055
1056         // FIXME: put this into some neat design, but the menu should be allowed to crash
1057         // without crashing the whole game, so this should just be a short-time solution
1058
1059         // here comes the not so critical stuff
1060         if (setjmp(host_abortframe)) {
1061                 return;
1062         }
1063
1064         if (cls.state != ca_dedicated)
1065         {
1066                 MR_Init();
1067         }
1068
1069         // check for special benchmark mode
1070 // 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)
1071         i = COM_CheckParm("-benchmark");
1072         if (i && i + 1 < com_argc)
1073         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1074         {
1075                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1076                 Cbuf_Execute();
1077         }
1078
1079         // check for special demo mode
1080 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1081         i = COM_CheckParm("-demo");
1082         if (i && i + 1 < com_argc)
1083         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1084         {
1085                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1086                 Cbuf_Execute();
1087         }
1088
1089 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1090         i = COM_CheckParm("-capturedemo");
1091         if (i && i + 1 < com_argc)
1092         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1093         {
1094                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1095                 Cbuf_Execute();
1096         }
1097
1098         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1099         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1100         {
1101                 Cbuf_AddText("startmap_dm\n");
1102                 Cbuf_Execute();
1103         }
1104
1105         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1106         {
1107                 if (gamemode == GAME_NEXUIZ)
1108                         Cbuf_AddText("togglemenu\nplayvideo logo\ncd loop 1\n");
1109                 else
1110                         Cbuf_AddText("togglemenu\n");
1111                 Cbuf_Execute();
1112         }
1113
1114         Con_DPrint("========Initialized=========\n");
1115
1116         //Host_StartVideo();
1117 }
1118
1119
1120 /*
1121 ===============
1122 Host_Shutdown
1123
1124 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1125 to run quit through here before the final handoff to the sys code.
1126 ===============
1127 */
1128 void Host_Shutdown(void)
1129 {
1130         static qboolean isdown = false;
1131
1132         if (isdown)
1133         {
1134                 Con_Print("recursive shutdown\n");
1135                 return;
1136         }
1137         if (setjmp(host_abortframe))
1138         {
1139                 Con_Print("aborted the quitting frame?!?\n");
1140                 return;
1141         }
1142         isdown = true;
1143
1144         // be quiet while shutting down
1145         S_StopAllSounds();
1146
1147         // disconnect client from server if active
1148         CL_Disconnect();
1149
1150         // shut down local server if active
1151         Host_ShutdownServer ();
1152
1153         // Shutdown menu
1154         if(MR_Shutdown)
1155                 MR_Shutdown();
1156
1157         // AK shutdown PRVM
1158         // AK hmm, no PRVM_Shutdown(); yet
1159
1160         CL_Video_Shutdown();
1161
1162         Host_SaveConfig_f();
1163
1164         CDAudio_Shutdown ();
1165         S_Terminate ();
1166         Curl_Shutdown ();
1167         NetConn_Shutdown ();
1168         //PR_Shutdown ();
1169
1170         if (cls.state != ca_dedicated)
1171         {
1172                 R_Modules_Shutdown();
1173                 VID_Shutdown();
1174         }
1175
1176         Cmd_Shutdown();
1177         CL_Shutdown();
1178         Sys_Shutdown();
1179         Log_Close();
1180         FS_Shutdown();
1181         Memory_Shutdown();
1182 }
1183