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