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 cvar_t cl_minfps = {CVAR_SAVE, "cl_minfps", "40", "minimum fps target - while the rendering performance is below this, it will drift toward lower quality"};
  63 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
  64 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
  65 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
  66 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
  67 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)"};
  68 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"};
  69
  70 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
  71 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  72
  73 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  74 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  75
  76 /*
  77 ================
  78 Host_AbortCurrentFrame
  79
  80 aborts the current host frame and goes on with the next one
  81 ================
  82 */
  83 void Host_AbortCurrentFrame(void)
  84 {
  85         longjmp (host_abortframe, 1);
  86 }
  87
  88 /*
  89 ================
  90 Host_Error
  91
  92 This shuts down both the client and server
  93 ================
  94 */
  95 void Host_Error (const char *error, ...)
  96 {
  97         static char hosterrorstring1[MAX_INPUTLINE];
  98         static char hosterrorstring2[MAX_INPUTLINE];
  99         static qboolean hosterror = false;
 100         va_list argptr;
 101
 102         // turn off rcon redirect if it was active when the crash occurred
 103         rcon_redirect = false;
 104
 105         va_start (argptr,error);
 106         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 107         va_end (argptr);
 108
 109         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 110
 111         // LordHavoc: if crashing very early, or currently shutting down, do
 112         // Sys_Error instead
 113         if (host_framecount < 3 || host_shuttingdown)
 114                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 115
 116         if (hosterror)
 117                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 118         hosterror = true;
 119
 120         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 121
 122         CL_Parse_DumpPacket();
 123
 124         CL_Parse_ErrorCleanUp();
 125
 126         //PR_Crash();
 127
 128         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 129         PRVM_Crash();
 130
 131
 132         Host_ShutdownServer ();
 133
 134         if (cls.state == ca_dedicated)
 135                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 136
 137         CL_Disconnect ();
 138         cls.demonum = -1;
 139
 140         hosterror = false;
 141
 142         Host_AbortCurrentFrame();
 143 }
 144
 145 void Host_ServerOptions (void)
 146 {
 147         int i;
 148
 149         // general default
 150         svs.maxclients = 8;
 151
 152 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 153 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 154         // if no client is in the executable or -dedicated is specified on
 155         // commandline, start a dedicated server
 156         i = COM_CheckParm ("-dedicated");
 157         if (i || !cl_available)
 158         {
 159                 cls.state = ca_dedicated;
 160                 // check for -dedicated specifying how many players
 161                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 162                         svs.maxclients = atoi (com_argv[i+1]);
 163                 if (COM_CheckParm ("-listen"))
 164                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 165                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 166                 Cvar_SetValue("sv_public", 1);
 167         }
 168         else if (cl_available)
 169         {
 170                 // client exists and not dedicated, check if -listen is specified
 171                 cls.state = ca_disconnected;
 172                 i = COM_CheckParm ("-listen");
 173                 if (i)
 174                 {
 175                         // default players unless specified
 176                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 177                                 svs.maxclients = atoi (com_argv[i+1]);
 178                 }
 179                 else
 180                 {
 181                         // default players in some games, singleplayer in most
 182                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 183                                 svs.maxclients = 1;
 184                 }
 185         }
 186
 187         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 188
 189         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 190
 191         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 192                 Cvar_SetValueQuick(&deathmatch, 1);
 193 }
 194
 195 /*
 196 =======================
 197 Host_InitLocal
 198 ======================
 199 */
 200 void Host_SaveConfig_f(void);
 201 void Host_LoadConfig_f(void);
 202 static void Host_InitLocal (void)
 203 {
 204         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 205         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 206
 207         Cvar_RegisterVariable (&host_framerate);
 208         Cvar_RegisterVariable (&host_speeds);
 209         Cvar_RegisterVariable (&cl_minfps);
 210         Cvar_RegisterVariable (&cl_minfps_fade);
 211         Cvar_RegisterVariable (&cl_minfps_qualitymax);
 212         Cvar_RegisterVariable (&cl_minfps_qualitymin);
 213         Cvar_RegisterVariable (&cl_minfps_qualityscale);
 214         Cvar_RegisterVariable (&cl_maxfps);
 215         Cvar_RegisterVariable (&cl_maxidlefps);
 216
 217         Cvar_RegisterVariable (&developer);
 218         Cvar_RegisterVariable (&developer_entityparsing);
 219
 220         Cvar_RegisterVariable (&timestamps);
 221         Cvar_RegisterVariable (&timeformat);
 222 }
 223
 224
 225 /*
 226 ===============
 227 Host_SaveConfig_f
 228
 229 Writes key bindings and archived cvars to config.cfg
 230 ===============
 231 */
 232 void Host_SaveConfig_to(const char *file)
 233 {
 234         qfile_t *f;
 235
 236 // dedicated servers initialize the host but don't parse and set the
 237 // config.cfg cvars
 238         // LordHavoc: don't save a config if it crashed in startup
 239         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 240         {
 241                 f = FS_Open (file, "wb", false, false);
 242                 if (!f)
 243                 {
 244                         Con_Printf("Couldn't write %s.\n", file);
 245                         return;
 246                 }
 247
 248                 Key_WriteBindings (f);
 249                 Cvar_WriteVariables (f);
 250
 251                 FS_Close (f);
 252         }
 253 }
 254 void Host_SaveConfig(void)
 255 {
 256         Host_SaveConfig_to("config.cfg");
 257 }
 258 void Host_SaveConfig_f(void)
 259 {
 260         const char *file = "config.cfg";
 261
 262         if(Cmd_Argc() >= 2) {
 263                 file = Cmd_Argv(1);
 264                 Con_Printf("Saving to %s\n", file);
 265         }
 266
 267         Host_SaveConfig_to(file);
 268 }
 269
 270 /*
 271 ===============
 272 Host_LoadConfig_f
 273
 274 Resets key bindings and cvars to defaults and then reloads scripts
 275 ===============
 276 */
 277 void Host_LoadConfig_f(void)
 278 {
 279         // unlock the cvar default strings so they can be updated by the new default.cfg
 280         Cvar_UnlockDefaults();
 281         // reset cvars to their defaults, and then exec startup scripts again
 282         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 283 }
 284
 285 /*
 286 =================
 287 SV_ClientPrint
 288
 289 Sends text across to be displayed
 290 FIXME: make this just a stuffed echo?
 291 =================
 292 */
 293 void SV_ClientPrint(const char *msg)
 294 {
 295         if (host_client->netconnection)
 296         {
 297                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 298                 MSG_WriteString(&host_client->netconnection->message, msg);
 299         }
 300 }
 301
 302 /*
 303 =================
 304 SV_ClientPrintf
 305
 306 Sends text across to be displayed
 307 FIXME: make this just a stuffed echo?
 308 =================
 309 */
 310 void SV_ClientPrintf(const char *fmt, ...)
 311 {
 312         va_list argptr;
 313         char msg[MAX_INPUTLINE];
 314
 315         va_start(argptr,fmt);
 316         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 317         va_end(argptr);
 318
 319         SV_ClientPrint(msg);
 320 }
 321
 322 /*
 323 =================
 324 SV_BroadcastPrint
 325
 326 Sends text to all active clients
 327 =================
 328 */
 329 void SV_BroadcastPrint(const char *msg)
 330 {
 331         int i;
 332         client_t *client;
 333
 334         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 335         {
 336                 if (client->active && client->netconnection)
 337                 {
 338                         MSG_WriteByte(&client->netconnection->message, svc_print);
 339                         MSG_WriteString(&client->netconnection->message, msg);
 340                 }
 341         }
 342
 343         if (sv_echobprint.integer && cls.state == ca_dedicated)
 344                 Con_Print(msg);
 345 }
 346
 347 /*
 348 =================
 349 SV_BroadcastPrintf
 350
 351 Sends text to all active clients
 352 =================
 353 */
 354 void SV_BroadcastPrintf(const char *fmt, ...)
 355 {
 356         va_list argptr;
 357         char msg[MAX_INPUTLINE];
 358
 359         va_start(argptr,fmt);
 360         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 361         va_end(argptr);
 362
 363         SV_BroadcastPrint(msg);
 364 }
 365
 366 /*
 367 =================
 368 Host_ClientCommands
 369
 370 Send text over to the client to be executed
 371 =================
 372 */
 373 void Host_ClientCommands(const char *fmt, ...)
 374 {
 375         va_list argptr;
 376         char string[MAX_INPUTLINE];
 377
 378         if (!host_client->netconnection)
 379                 return;
 380
 381         va_start(argptr,fmt);
 382         dpvsnprintf(string, sizeof(string), fmt, argptr);
 383         va_end(argptr);
 384
 385         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 386         MSG_WriteString(&host_client->netconnection->message, string);
 387 }
 388
 389 /*
 390 =====================
 391 SV_DropClient
 392
 393 Called when the player is getting totally kicked off the host
 394 if (crash = true), don't bother sending signofs
 395 =====================
 396 */
 397 void SV_DropClient(qboolean crash)
 398 {
 399         int i;
 400         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 401
 402         SV_StopDemoRecording(host_client);
 403
 404         // make sure edict is not corrupt (from a level change for example)
 405         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 406
 407         if (host_client->netconnection)
 408         {
 409                 // free the client (the body stays around)
 410                 if (!crash)
 411                 {
 412                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 413                         unsigned char bufdata[8];
 414                         sizebuf_t buf;
 415                         memset(&buf, 0, sizeof(buf));
 416                         buf.data = bufdata;
 417                         buf.maxsize = sizeof(bufdata);
 418                         MSG_WriteByte(&buf, svc_disconnect);
 419                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 420                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 421                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 422                 }
 423                 // break the net connection
 424                 NetConn_Close(host_client->netconnection);
 425                 host_client->netconnection = NULL;
 426         }
 427
 428         // call qc ClientDisconnect function
 429         // LordHavoc: don't call QC if server is dead (avoids recursive
 430         // Host_Error in some mods when they run out of edicts)
 431         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 432         {
 433                 // call the prog function for removing a client
 434                 // this will set the body to a dead frame, among other things
 435                 int saveSelf = prog->globals.server->self;
 436                 host_client->clientconnectcalled = false;
 437                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 438                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 439                 prog->globals.server->self = saveSelf;
 440         }
 441
 442         // if a download is active, close it
 443         if (host_client->download_file)
 444         {
 445                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 446                 FS_Close(host_client->download_file);
 447                 host_client->download_file = NULL;
 448                 host_client->download_name[0] = 0;
 449                 host_client->download_expectedposition = 0;
 450                 host_client->download_started = false;
 451         }
 452
 453         // remove leaving player from scoreboard
 454         host_client->name[0] = 0;
 455         host_client->colors = 0;
 456         host_client->frags = 0;
 457         // send notification to all clients
 458         // get number of client manually just to make sure we get it right...
 459         i = host_client - svs.clients;
 460         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 461         MSG_WriteByte (&sv.reliable_datagram, i);
 462         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 463         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 464         MSG_WriteByte (&sv.reliable_datagram, i);
 465         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 466         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 467         MSG_WriteByte (&sv.reliable_datagram, i);
 468         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 469
 470         // free the client now
 471         if (host_client->entitydatabase)
 472                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 473         if (host_client->entitydatabase4)
 474                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 475         if (host_client->entitydatabase5)
 476                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 477
 478         if (sv.active)
 479         {
 480                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 481                 PRVM_ED_ClearEdict(host_client->edict);
 482         }
 483
 484         // clear the client struct (this sets active to false)
 485         memset(host_client, 0, sizeof(*host_client));
 486
 487         // update server listing on the master because player count changed
 488         // (which the master uses for filtering empty/full servers)
 489         NetConn_Heartbeat(1);
 490
 491         if (sv.loadgame)
 492         {
 493                 for (i = 0;i < svs.maxclients;i++)
 494                         if (svs.clients[i].active && !svs.clients[i].spawned)
 495                                 break;
 496                 if (i == svs.maxclients)
 497                 {
 498                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 499                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 500                 }
 501         }
 502 }
 503
 504 /*
 505 ==================
 506 Host_ShutdownServer
 507
 508 This only happens at the end of a game, not between levels
 509 ==================
 510 */
 511 void Host_ShutdownServer(void)
 512 {
 513         int i;
 514
 515         Con_DPrintf("Host_ShutdownServer\n");
 516
 517         if (!sv.active)
 518                 return;
 519
 520         NetConn_Heartbeat(2);
 521         NetConn_Heartbeat(2);
 522
 523 // make sure all the clients know we're disconnecting
 524         SV_VM_Begin();
 525         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 526                 if (host_client->active)
 527                         SV_DropClient(false); // server shutdown
 528         if(prog->loaded)
 529                 if(prog->funcoffsets.SV_Shutdown)
 530                 {
 531                         func_t s = prog->funcoffsets.SV_Shutdown;
 532                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
 533                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
 534                 }
 535         SV_VM_End();
 536
 537         NetConn_CloseServerPorts();
 538
 539         sv.active = false;
 540 //
 541 // clear structures
 542 //
 543         memset(&sv, 0, sizeof(sv));
 544         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 545 }
 546
 547
 548 //============================================================================
 549
 550 /*
 551 ===================
 552 Host_GetConsoleCommands
 553
 554 Add them exactly as if they had been typed at the console
 555 ===================
 556 */
 557 void Host_GetConsoleCommands (void)
 558 {
 559         char *cmd;
 560
 561         while (1)
 562         {
 563                 cmd = Sys_ConsoleInput ();
 564                 if (!cmd)
 565                         break;
 566                 Cbuf_AddText (cmd);
 567         }
 568 }
 569
 570 /*
 571 ==================
 572 Host_TimeReport
 573
 574 Returns a time report string, for example for
 575 ==================
 576 */
 577 const char *Host_TimingReport()
 578 {
 579         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);
 580 }
 581
 582 /*
 583 ==================
 584 Host_Frame
 585
 586 Runs all active servers
 587 ==================
 588 */
 589 static void Host_Init(void);
 590 void Host_Main(void)
 591 {
 592         double time1 = 0;
 593         double time2 = 0;
 594         double time3 = 0;
 595         double cl_timer, sv_timer;
 596         double clframetime, deltarealtime, oldrealtime;
 597         double wait;
 598         int pass1, pass2, pass3, i;
 599
 600         Host_Init();
 601
 602         cl_timer = 0;
 603         sv_timer = 0;
 604
 605         realtime = Sys_DoubleTime();
 606         for (;;)
 607         {
 608                 if (setjmp(host_abortframe))
 609                         continue;                       // something bad happened, or the server disconnected
 610
 611                 oldrealtime = realtime;
 612                 realtime = Sys_DoubleTime();
 613
 614                 deltarealtime = realtime - oldrealtime;
 615                 cl_timer += deltarealtime;
 616                 sv_timer += deltarealtime;
 617
 618                 svs.perf_acc_realtime += deltarealtime;
 619
 620                 // Look for clients who have spawned
 621                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 622                         if(host_client->spawned)
 623                                 if(host_client->netconnection)
 624                                         break;
 625                 if(i == svs.maxclients)
 626                 {
 627                         // Nobody is looking? Then we won't do timing...
 628                         // Instead, reset it to zero
 629                         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;
 630                 }
 631                 else if(svs.perf_acc_realtime > 5)
 632                 {
 633                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 634                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 635                         if(svs.perf_acc_offset_samples > 0)
 636                         {
 637                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 638                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 639                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 640                         }
 641                         if(svs.perf_lost > 0)
 642                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 643                         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;
 644                 }
 645
 646                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 647                         Cvar_SetValue("slowmo", 0);
 648                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 649                         Cvar_SetValue("host_framerate", 0);
 650
 651                 // keep the random time dependent, but not when playing demos/benchmarking
 652                 if(!*sv_random_seed.string && !cls.demoplayback)
 653                         rand();
 654
 655                 cl.islocalgame = NetConn_IsLocalGame();
 656
 657                 // get new key events
 658                 Sys_SendKeyEvents();
 659
 660                 NetConn_UpdateSockets();
 661
 662                 Log_DestBuffer_Flush();
 663
 664                 // receive packets on each main loop iteration, as the main loop may
 665                 // be undersleeping due to select() detecting a new packet
 666                 if (sv.active)
 667                         NetConn_ServerFrame();
 668
 669                 Curl_Run();
 670
 671                 // check for commands typed to the host
 672                 Host_GetConsoleCommands();
 673
 674                 // when a server is running we only execute console commands on server frames
 675                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 676                 // otherwise we execute them on all frames
 677                 if (sv_timer > 0 || !sv.active)
 678                 {
 679                         // process console commands
 680                         Cbuf_Execute();
 681                 }
 682
 683                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 684
 685                 // if the accumulators haven't become positive yet, wait a while
 686                 if (cls.state == ca_dedicated)
 687                         wait = sv_timer * -1000000.0;
 688                 else if (!sv.active)
 689                         wait = cl_timer * -1000000.0;
 690                 else
 691                         wait = max(cl_timer, sv_timer) * -1000000.0;
 692                 if (wait > 100000)
 693                         wait = 100000;
 694
 695                 if (!cls.timedemo && wait > 0)
 696                 {
 697                         double time0 = Sys_DoubleTime();
 698                         if (sv_checkforpacketsduringsleep.integer)
 699                         {
 700                                 if (wait >= 1)
 701                                         NetConn_SleepMicroseconds((int)wait);
 702                         }
 703                         else
 704                         {
 705                                 if (wait >= 1000)
 706                                         Sys_Sleep((int)wait / 1000);
 707                         }
 708                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 709                         continue;
 710                 }
 711
 712         //-------------------
 713         //
 714         // server operations
 715         //
 716         //-------------------
 717
 718                 // limit the frametime steps to no more than 100ms each
 719                 if (cl_timer > 0.1)
 720                         cl_timer = 0.1;
 721                 if (sv_timer > 0.1)
 722                 {
 723                         svs.perf_acc_lost += (sv_timer - 0.1);
 724                         sv_timer = 0.1;
 725                 }
 726
 727                 if (sv.active && sv_timer > 0)
 728                 {
 729                         // execute one or more server frames, with an upper limit on how much
 730                         // execution time to spend on server frames to avoid freezing the game if
 731                         // the server is overloaded, this execution time limit means the game will
 732                         // slow down if the server is taking too long.
 733                         int framecount, framelimit = 1;
 734                         double advancetime, aborttime = 0;
 735                         float offset;
 736
 737                         // run the world state
 738                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 739
 740                         // stop running server frames if the wall time reaches this value
 741                         if (sys_ticrate.value <= 0)
 742                                 advancetime = sv_timer;
 743                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 744                         {
 745                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 746                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 747                                 framelimit = 10;
 748                                 aborttime = realtime + 0.1;
 749                         }
 750                         else
 751                         {
 752                                 advancetime = sys_ticrate.value;
 753                                 // listen servers can run multiple server frames per client frame
 754                                 if (cls.state == ca_connected)
 755                                 {
 756                                         framelimit = 10;
 757                                         aborttime = realtime + 0.1;
 758                                 }
 759                         }
 760                         advancetime = min(advancetime, 0.1);
 761
 762                         if(advancetime > 0)
 763                         {
 764                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 765                                 ++svs.perf_acc_offset_samples;
 766                                 svs.perf_acc_offset += offset;
 767                                 svs.perf_acc_offset_squared += offset * offset;
 768                                 if(svs.perf_acc_offset_max < offset)
 769                                         svs.perf_acc_offset_max = offset;
 770                         }
 771
 772                         // only advance time if not paused
 773                         // the game also pauses in singleplayer when menu or console is used
 774                         sv.frametime = advancetime * slowmo.value;
 775                         if (host_framerate.value)
 776                                 sv.frametime = host_framerate.value;
 777                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 778                                 sv.frametime = 0;
 779
 780                         // setup the VM frame
 781                         SV_VM_Begin();
 782
 783                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 784                         {
 785                                 sv_timer -= advancetime;
 786
 787                                 // move things around and think unless paused
 788                                 if (sv.frametime)
 789                                         SV_Physics();
 790
 791                                 // if this server frame took too long, break out of the loop
 792                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 793                                         break;
 794                         }
 795
 796                         // send all messages to the clients
 797                         SV_SendClientMessages();
 798
 799                         // end the server VM frame
 800                         SV_VM_End();
 801
 802                         // send an heartbeat if enough time has passed since the last one
 803                         NetConn_Heartbeat(0);
 804                 }
 805
 806         //-------------------
 807         //
 808         // client operations
 809         //
 810         //-------------------
 811
 812                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 813                 {
 814                         // decide the simulation time
 815                         if (cls.capturevideo.active)
 816                         {
 817                                 if (cls.capturevideo.realtime)
 818                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 819                                 else
 820                                 {
 821                                         clframetime = 1.0 / cls.capturevideo.framerate;
 822                                         cl.realframetime = max(cl_timer, clframetime);
 823                                 }
 824                         }
 825                         else if (vid_activewindow)
 826                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 827                         else
 828                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 829
 830                         // apply slowmo scaling
 831                         clframetime *= cl.movevars_timescale;
 832                         // scale playback speed of demos by slowmo cvar
 833                         if (cls.demoplayback)
 834                         {
 835                                 clframetime *= slowmo.value;
 836                                 // if demo playback is paused, don't advance time at all
 837                                 if (cls.demopaused)
 838                                         clframetime = 0;
 839                         }
 840
 841                         // host_framerate overrides all else
 842                         if (host_framerate.value)
 843                                 clframetime = host_framerate.value;
 844
 845                         if (cls.timedemo)
 846                                 clframetime = cl.realframetime = cl_timer;
 847
 848                         // deduct the frame time from the accumulator
 849                         cl_timer -= cl.realframetime;
 850
 851                         cl.oldtime = cl.time;
 852                         cl.time += clframetime;
 853
 854                         // Collect input into cmd
 855                         CL_Input();
 856
 857                         // check for new packets
 858                         NetConn_ClientFrame();
 859
 860                         // read a new frame from a demo if needed
 861                         CL_ReadDemoMessage();
 862
 863                         // now that packets have been read, send input to server
 864                         CL_SendMove();
 865
 866                         // update client world (interpolate entities, create trails, etc)
 867                         CL_UpdateWorld();
 868
 869                         // update video
 870                         if (host_speeds.integer)
 871                                 time1 = Sys_DoubleTime();
 872
 873                         //ui_update();
 874
 875                         CL_Video_Frame();
 876                         CL_Gecko_Frame();
 877
 878                         CL_UpdateScreen();
 879
 880                         if (host_speeds.integer)
 881                                 time2 = Sys_DoubleTime();
 882
 883                         // update audio
 884                         if(cl.csqc_usecsqclistener)
 885                         {
 886                                 S_Update(&cl.csqc_listenermatrix);
 887                                 cl.csqc_usecsqclistener = false;
 888                         }
 889                         else
 890                                 S_Update(&r_refdef.view.matrix);
 891
 892                         CDAudio_Update();
 893
 894                         if (host_speeds.integer)
 895                         {
 896                                 pass1 = (int)((time1 - time3)*1000000);
 897                                 time3 = Sys_DoubleTime();
 898                                 pass2 = (int)((time2 - time1)*1000000);
 899                                 pass3 = (int)((time3 - time2)*1000000);
 900                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 901                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 902                         }
 903                 }
 904
 905                 // if there is some time remaining from this frame, reset the timers
 906                 if (cl_timer >= 0)
 907                         cl_timer = 0;
 908                 if (sv_timer >= 0)
 909                 {
 910                         svs.perf_acc_lost += sv_timer;
 911                         sv_timer = 0;
 912                 }
 913
 914                 host_framecount++;
 915         }
 916 }
 917
 918 //============================================================================
 919
 920 qboolean vid_opened = false;
 921 void Host_StartVideo(void)
 922 {
 923         if (!vid_opened && cls.state != ca_dedicated)
 924         {
 925                 vid_opened = true;
 926                 VID_Start();
 927                 CDAudio_Startup();
 928         }
 929 }
 930
 931 char engineversion[128];
 932
 933 qboolean sys_nostdout = false;
 934
 935 extern void Render_Init(void);
 936 extern void Mathlib_Init(void);
 937 extern void FS_Init(void);
 938 extern void FS_Shutdown(void);
 939 extern void PR_Cmd_Init(void);
 940 extern void COM_Init_Commands(void);
 941 extern void FS_Init_Commands(void);
 942 extern qboolean host_stuffcmdsrun;
 943
 944 /*
 945 ====================
 946 Host_Init
 947 ====================
 948 */
 949 static void Host_Init (void)
 950 {
 951         int i;
 952         const char* os;
 953
 954         if (COM_CheckParm("-profilegameonly"))
 955                 Sys_AllowProfiling(false);
 956
 957         // LordHavoc: quake never seeded the random number generator before... heh
 958         if (COM_CheckParm("-benchmark"))
 959                 srand(0); // predictable random sequence for -benchmark
 960         else
 961                 srand(time(NULL));
 962
 963         // FIXME: this is evil, but possibly temporary
 964 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 965         if (COM_CheckParm("-developer"))
 966         {
 967                 developer.value = developer.integer = 100;
 968                 developer.string = "100";
 969         }
 970
 971         if (COM_CheckParm("-developer2"))
 972         {
 973                 developer.value = developer.integer = 100;
 974                 developer.string = "100";
 975                 developer_memory.value = developer_memory.integer = 100;
 976                 developer.string = "100";
 977                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 978                 developer_memorydebug.string = "100";
 979         }
 980
 981 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 982         if (COM_CheckParm("-nostdout"))
 983                 sys_nostdout = 1;
 984
 985         // used by everything
 986         Memory_Init();
 987
 988         // initialize console command/cvar/alias/command execution systems
 989         Cmd_Init();
 990
 991         // initialize memory subsystem cvars/commands
 992         Memory_Init_Commands();
 993
 994         // initialize console and logging and its cvars/commands
 995         Con_Init();
 996
 997         // initialize various cvars that could not be initialized earlier
 998         Curl_Init_Commands();
 999         Cmd_Init_Commands();
1000         Sys_Init_Commands();
1001         COM_Init_Commands();
1002         FS_Init_Commands();
1003
1004         // initialize console window (only used by sys_win.c)
1005         Sys_InitConsole();
1006
1007         // detect gamemode from commandline options or executable name
1008         COM_InitGameType();
1009
1010         // construct a version string for the corner of the console
1011         os = DP_OS_NAME;
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