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", "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)"};
  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_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
  73
  74 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
  75 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
  76
  77 /*
  78 ================
  79 Host_AbortCurrentFrame
  80
  81 aborts the current host frame and goes on with the next one
  82 ================
  83 */
  84 void Host_AbortCurrentFrame(void)
  85 {
  86         longjmp (host_abortframe, 1);
  87 }
  88
  89 /*
  90 ================
  91 Host_Error
  92
  93 This shuts down both the client and server
  94 ================
  95 */
  96 void Host_Error (const char *error, ...)
  97 {
  98         static char hosterrorstring1[MAX_INPUTLINE];
  99         static char hosterrorstring2[MAX_INPUTLINE];
 100         static qboolean hosterror = false;
 101         va_list argptr;
 102
 103         // turn off rcon redirect if it was active when the crash occurred
 104         rcon_redirect = false;
 105
 106         va_start (argptr,error);
 107         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
 108         va_end (argptr);
 109
 110         Con_Printf("Host_Error: %s\n", hosterrorstring1);
 111
 112         // LordHavoc: if crashing very early, or currently shutting down, do
 113         // Sys_Error instead
 114         if (host_framecount < 3 || host_shuttingdown)
 115                 Sys_Error ("Host_Error: %s", hosterrorstring1);
 116
 117         if (hosterror)
 118                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
 119         hosterror = true;
 120
 121         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
 122
 123         CL_Parse_DumpPacket();
 124
 125         CL_Parse_ErrorCleanUp();
 126
 127         //PR_Crash();
 128
 129         // print out where the crash happened, if it was caused by QC (and do a cleanup)
 130         PRVM_Crash();
 131
 132
 133         Host_ShutdownServer ();
 134
 135         if (cls.state == ca_dedicated)
 136                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
 137
 138         CL_Disconnect ();
 139         cls.demonum = -1;
 140
 141         hosterror = false;
 142
 143         Host_AbortCurrentFrame();
 144 }
 145
 146 void Host_ServerOptions (void)
 147 {
 148         int i;
 149
 150         // general default
 151         svs.maxclients = 8;
 152
 153 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
 154 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
 155         // if no client is in the executable or -dedicated is specified on
 156         // commandline, start a dedicated server
 157         i = COM_CheckParm ("-dedicated");
 158         if (i || !cl_available)
 159         {
 160                 cls.state = ca_dedicated;
 161                 // check for -dedicated specifying how many players
 162                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 163                         svs.maxclients = atoi (com_argv[i+1]);
 164                 if (COM_CheckParm ("-listen"))
 165                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
 166                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
 167                 Cvar_SetValue("sv_public", 1);
 168         }
 169         else if (cl_available)
 170         {
 171                 // client exists and not dedicated, check if -listen is specified
 172                 cls.state = ca_disconnected;
 173                 i = COM_CheckParm ("-listen");
 174                 if (i)
 175                 {
 176                         // default players unless specified
 177                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
 178                                 svs.maxclients = atoi (com_argv[i+1]);
 179                 }
 180                 else
 181                 {
 182                         // default players in some games, singleplayer in most
 183                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
 184                                 svs.maxclients = 1;
 185                 }
 186         }
 187
 188         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
 189
 190         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
 191
 192         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
 193                 Cvar_SetValueQuick(&deathmatch, 1);
 194 }
 195
 196 /*
 197 =======================
 198 Host_InitLocal
 199 ======================
 200 */
 201 void Host_SaveConfig_f(void);
 202 void Host_LoadConfig_f(void);
 203 static void Host_InitLocal (void)
 204 {
 205         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
 206         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
 207
 208         Cvar_RegisterVariable (&host_framerate);
 209         Cvar_RegisterVariable (&host_speeds);
 210         Cvar_RegisterVariable (&cl_minfps);
 211         Cvar_RegisterVariable (&cl_minfps_fade);
 212         Cvar_RegisterVariable (&cl_minfps_qualitymax);
 213         Cvar_RegisterVariable (&cl_minfps_qualitymin);
 214         Cvar_RegisterVariable (&cl_minfps_qualitypower);
 215         Cvar_RegisterVariable (&cl_minfps_qualityscale);
 216         Cvar_RegisterVariable (&cl_maxfps);
 217         Cvar_RegisterVariable (&cl_maxidlefps);
 218
 219         Cvar_RegisterVariable (&developer);
 220         Cvar_RegisterVariable (&developer_entityparsing);
 221
 222         Cvar_RegisterVariable (&timestamps);
 223         Cvar_RegisterVariable (&timeformat);
 224 }
 225
 226
 227 /*
 228 ===============
 229 Host_SaveConfig_f
 230
 231 Writes key bindings and archived cvars to config.cfg
 232 ===============
 233 */
 234 void Host_SaveConfig_to(const char *file)
 235 {
 236         qfile_t *f;
 237
 238 // dedicated servers initialize the host but don't parse and set the
 239 // config.cfg cvars
 240         // LordHavoc: don't save a config if it crashed in startup
 241         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
 242         {
 243                 f = FS_Open (file, "wb", false, false);
 244                 if (!f)
 245                 {
 246                         Con_Printf("Couldn't write %s.\n", file);
 247                         return;
 248                 }
 249
 250                 Key_WriteBindings (f);
 251                 Cvar_WriteVariables (f);
 252
 253                 FS_Close (f);
 254         }
 255 }
 256 void Host_SaveConfig(void)
 257 {
 258         Host_SaveConfig_to("config.cfg");
 259 }
 260 void Host_SaveConfig_f(void)
 261 {
 262         const char *file = "config.cfg";
 263
 264         if(Cmd_Argc() >= 2) {
 265                 file = Cmd_Argv(1);
 266                 Con_Printf("Saving to %s\n", file);
 267         }
 268
 269         Host_SaveConfig_to(file);
 270 }
 271
 272 /*
 273 ===============
 274 Host_LoadConfig_f
 275
 276 Resets key bindings and cvars to defaults and then reloads scripts
 277 ===============
 278 */
 279 void Host_LoadConfig_f(void)
 280 {
 281         // unlock the cvar default strings so they can be updated by the new default.cfg
 282         Cvar_UnlockDefaults();
 283         // reset cvars to their defaults, and then exec startup scripts again
 284         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
 285 }
 286
 287 /*
 288 =================
 289 SV_ClientPrint
 290
 291 Sends text across to be displayed
 292 FIXME: make this just a stuffed echo?
 293 =================
 294 */
 295 void SV_ClientPrint(const char *msg)
 296 {
 297         if (host_client->netconnection)
 298         {
 299                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
 300                 MSG_WriteString(&host_client->netconnection->message, msg);
 301         }
 302 }
 303
 304 /*
 305 =================
 306 SV_ClientPrintf
 307
 308 Sends text across to be displayed
 309 FIXME: make this just a stuffed echo?
 310 =================
 311 */
 312 void SV_ClientPrintf(const char *fmt, ...)
 313 {
 314         va_list argptr;
 315         char msg[MAX_INPUTLINE];
 316
 317         va_start(argptr,fmt);
 318         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 319         va_end(argptr);
 320
 321         SV_ClientPrint(msg);
 322 }
 323
 324 /*
 325 =================
 326 SV_BroadcastPrint
 327
 328 Sends text to all active clients
 329 =================
 330 */
 331 void SV_BroadcastPrint(const char *msg)
 332 {
 333         int i;
 334         client_t *client;
 335
 336         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
 337         {
 338                 if (client->active && client->netconnection)
 339                 {
 340                         MSG_WriteByte(&client->netconnection->message, svc_print);
 341                         MSG_WriteString(&client->netconnection->message, msg);
 342                 }
 343         }
 344
 345         if (sv_echobprint.integer && cls.state == ca_dedicated)
 346                 Con_Print(msg);
 347 }
 348
 349 /*
 350 =================
 351 SV_BroadcastPrintf
 352
 353 Sends text to all active clients
 354 =================
 355 */
 356 void SV_BroadcastPrintf(const char *fmt, ...)
 357 {
 358         va_list argptr;
 359         char msg[MAX_INPUTLINE];
 360
 361         va_start(argptr,fmt);
 362         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
 363         va_end(argptr);
 364
 365         SV_BroadcastPrint(msg);
 366 }
 367
 368 /*
 369 =================
 370 Host_ClientCommands
 371
 372 Send text over to the client to be executed
 373 =================
 374 */
 375 void Host_ClientCommands(const char *fmt, ...)
 376 {
 377         va_list argptr;
 378         char string[MAX_INPUTLINE];
 379
 380         if (!host_client->netconnection)
 381                 return;
 382
 383         va_start(argptr,fmt);
 384         dpvsnprintf(string, sizeof(string), fmt, argptr);
 385         va_end(argptr);
 386
 387         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
 388         MSG_WriteString(&host_client->netconnection->message, string);
 389 }
 390
 391 /*
 392 =====================
 393 SV_DropClient
 394
 395 Called when the player is getting totally kicked off the host
 396 if (crash = true), don't bother sending signofs
 397 =====================
 398 */
 399 void SV_DropClient(qboolean crash)
 400 {
 401         int i;
 402         Con_Printf("Client \"%s\" dropped\n", host_client->name);
 403
 404         SV_StopDemoRecording(host_client);
 405
 406         // make sure edict is not corrupt (from a level change for example)
 407         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
 408
 409         if (host_client->netconnection)
 410         {
 411                 // free the client (the body stays around)
 412                 if (!crash)
 413                 {
 414                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
 415                         unsigned char bufdata[8];
 416                         sizebuf_t buf;
 417                         memset(&buf, 0, sizeof(buf));
 418                         buf.data = bufdata;
 419                         buf.maxsize = sizeof(bufdata);
 420                         MSG_WriteByte(&buf, svc_disconnect);
 421                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 422                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 423                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
 424                 }
 425                 // break the net connection
 426                 NetConn_Close(host_client->netconnection);
 427                 host_client->netconnection = NULL;
 428         }
 429
 430         // call qc ClientDisconnect function
 431         // LordHavoc: don't call QC if server is dead (avoids recursive
 432         // Host_Error in some mods when they run out of edicts)
 433         if (host_client->clientconnectcalled && sv.active && host_client->edict)
 434         {
 435                 // call the prog function for removing a client
 436                 // this will set the body to a dead frame, among other things
 437                 int saveSelf = prog->globals.server->self;
 438                 host_client->clientconnectcalled = false;
 439                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
 440                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
 441                 prog->globals.server->self = saveSelf;
 442         }
 443
 444         // if a download is active, close it
 445         if (host_client->download_file)
 446         {
 447                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
 448                 FS_Close(host_client->download_file);
 449                 host_client->download_file = NULL;
 450                 host_client->download_name[0] = 0;
 451                 host_client->download_expectedposition = 0;
 452                 host_client->download_started = false;
 453         }
 454
 455         // remove leaving player from scoreboard
 456         host_client->name[0] = 0;
 457         host_client->colors = 0;
 458         host_client->frags = 0;
 459         // send notification to all clients
 460         // get number of client manually just to make sure we get it right...
 461         i = host_client - svs.clients;
 462         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
 463         MSG_WriteByte (&sv.reliable_datagram, i);
 464         MSG_WriteString (&sv.reliable_datagram, host_client->name);
 465         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
 466         MSG_WriteByte (&sv.reliable_datagram, i);
 467         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
 468         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
 469         MSG_WriteByte (&sv.reliable_datagram, i);
 470         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
 471
 472         // free the client now
 473         if (host_client->entitydatabase)
 474                 EntityFrame_FreeDatabase(host_client->entitydatabase);
 475         if (host_client->entitydatabase4)
 476                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
 477         if (host_client->entitydatabase5)
 478                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
 479
 480         if (sv.active)
 481         {
 482                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
 483                 PRVM_ED_ClearEdict(host_client->edict);
 484         }
 485
 486         // clear the client struct (this sets active to false)
 487         memset(host_client, 0, sizeof(*host_client));
 488
 489         // update server listing on the master because player count changed
 490         // (which the master uses for filtering empty/full servers)
 491         NetConn_Heartbeat(1);
 492
 493         if (sv.loadgame)
 494         {
 495                 for (i = 0;i < svs.maxclients;i++)
 496                         if (svs.clients[i].active && !svs.clients[i].spawned)
 497                                 break;
 498                 if (i == svs.maxclients)
 499                 {
 500                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
 501                         sv.paused = sv.loadgame = false; // we're basically done with loading now
 502                 }
 503         }
 504 }
 505
 506 /*
 507 ==================
 508 Host_ShutdownServer
 509
 510 This only happens at the end of a game, not between levels
 511 ==================
 512 */
 513 void Host_ShutdownServer(void)
 514 {
 515         int i;
 516
 517         Con_DPrintf("Host_ShutdownServer\n");
 518
 519         if (!sv.active)
 520                 return;
 521
 522         NetConn_Heartbeat(2);
 523         NetConn_Heartbeat(2);
 524
 525 // make sure all the clients know we're disconnecting
 526         SV_VM_Begin();
 527         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 528                 if (host_client->active)
 529                         SV_DropClient(false); // server shutdown
 530         if(prog->loaded)
 531                 if(prog->funcoffsets.SV_Shutdown)
 532                 {
 533                         func_t s = prog->funcoffsets.SV_Shutdown;
 534                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
 535                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
 536                 }
 537         SV_VM_End();
 538
 539         NetConn_CloseServerPorts();
 540
 541         sv.active = false;
 542 //
 543 // clear structures
 544 //
 545         memset(&sv, 0, sizeof(sv));
 546         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
 547 }
 548
 549
 550 //============================================================================
 551
 552 /*
 553 ===================
 554 Host_GetConsoleCommands
 555
 556 Add them exactly as if they had been typed at the console
 557 ===================
 558 */
 559 void Host_GetConsoleCommands (void)
 560 {
 561         char *cmd;
 562
 563         while (1)
 564         {
 565                 cmd = Sys_ConsoleInput ();
 566                 if (!cmd)
 567                         break;
 568                 Cbuf_AddText (cmd);
 569         }
 570 }
 571
 572 /*
 573 ==================
 574 Host_TimeReport
 575
 576 Returns a time report string, for example for
 577 ==================
 578 */
 579 const char *Host_TimingReport()
 580 {
 581         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);
 582 }
 583
 584 /*
 585 ==================
 586 Host_Frame
 587
 588 Runs all active servers
 589 ==================
 590 */
 591 static void Host_Init(void);
 592 void Host_Main(void)
 593 {
 594         double time1 = 0;
 595         double time2 = 0;
 596         double time3 = 0;
 597         double cl_timer, sv_timer;
 598         double clframetime, deltarealtime, oldrealtime;
 599         double wait;
 600         int pass1, pass2, pass3, i;
 601
 602         Host_Init();
 603
 604         cl_timer = 0;
 605         sv_timer = 0;
 606
 607         realtime = Sys_DoubleTime();
 608         for (;;)
 609         {
 610                 if (setjmp(host_abortframe))
 611                         continue;                       // something bad happened, or the server disconnected
 612
 613                 oldrealtime = realtime;
 614                 realtime = Sys_DoubleTime();
 615
 616                 deltarealtime = realtime - oldrealtime;
 617                 cl_timer += deltarealtime;
 618                 sv_timer += deltarealtime;
 619
 620                 svs.perf_acc_realtime += deltarealtime;
 621
 622                 // Look for clients who have spawned
 623                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
 624                         if(host_client->spawned)
 625                                 if(host_client->netconnection)
 626                                         break;
 627                 if(i == svs.maxclients)
 628                 {
 629                         // Nobody is looking? Then we won't do timing...
 630                         // Instead, reset it to zero
 631                         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;
 632                 }
 633                 else if(svs.perf_acc_realtime > 5)
 634                 {
 635                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
 636                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
 637                         if(svs.perf_acc_offset_samples > 0)
 638                         {
 639                                 svs.perf_offset_max = svs.perf_acc_offset_max;
 640                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
 641                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
 642                         }
 643                         if(svs.perf_lost > 0)
 644                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
 645                         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;
 646                 }
 647
 648                 if (slowmo.value < 0.00001 && slowmo.value != 0)
 649                         Cvar_SetValue("slowmo", 0);
 650                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
 651                         Cvar_SetValue("host_framerate", 0);
 652
 653                 // keep the random time dependent, but not when playing demos/benchmarking
 654                 if(!*sv_random_seed.string && !cls.demoplayback)
 655                         rand();
 656
 657                 cl.islocalgame = NetConn_IsLocalGame();
 658
 659                 // get new key events
 660                 Sys_SendKeyEvents();
 661
 662                 NetConn_UpdateSockets();
 663
 664                 Log_DestBuffer_Flush();
 665
 666                 // receive packets on each main loop iteration, as the main loop may
 667                 // be undersleeping due to select() detecting a new packet
 668                 if (sv.active)
 669                         NetConn_ServerFrame();
 670
 671                 Curl_Run();
 672
 673                 // check for commands typed to the host
 674                 Host_GetConsoleCommands();
 675
 676                 // when a server is running we only execute console commands on server frames
 677                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
 678                 // otherwise we execute them on all frames
 679                 if (sv_timer > 0 || !sv.active)
 680                 {
 681                         // process console commands
 682                         Cbuf_Execute();
 683                 }
 684
 685                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
 686
 687                 // if the accumulators haven't become positive yet, wait a while
 688                 if (cls.state == ca_dedicated)
 689                         wait = sv_timer * -1000000.0;
 690                 else if (!sv.active)
 691                         wait = cl_timer * -1000000.0;
 692                 else
 693                         wait = max(cl_timer, sv_timer) * -1000000.0;
 694                 if (wait > 100000)
 695                         wait = 100000;
 696
 697                 if (!cls.timedemo && wait > 0)
 698                 {
 699                         double time0 = Sys_DoubleTime();
 700                         if (sv_checkforpacketsduringsleep.integer)
 701                         {
 702                                 if (wait >= 1)
 703                                         NetConn_SleepMicroseconds((int)wait);
 704                         }
 705                         else
 706                         {
 707                                 if (wait >= 1000)
 708                                         Sys_Sleep((int)wait / 1000);
 709                         }
 710                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
 711                         continue;
 712                 }
 713
 714         //-------------------
 715         //
 716         // server operations
 717         //
 718         //-------------------
 719
 720                 // limit the frametime steps to no more than 100ms each
 721                 if (cl_timer > 0.1)
 722                         cl_timer = 0.1;
 723                 if (sv_timer > 0.1)
 724                 {
 725                         svs.perf_acc_lost += (sv_timer - 0.1);
 726                         sv_timer = 0.1;
 727                 }
 728
 729                 if (sv.active && sv_timer > 0)
 730                 {
 731                         // execute one or more server frames, with an upper limit on how much
 732                         // execution time to spend on server frames to avoid freezing the game if
 733                         // the server is overloaded, this execution time limit means the game will
 734                         // slow down if the server is taking too long.
 735                         int framecount, framelimit = 1;
 736                         double advancetime, aborttime = 0;
 737                         float offset;
 738
 739                         // run the world state
 740                         // don't allow simulation to run too fast or too slow or logic glitches can occur
 741
 742                         // stop running server frames if the wall time reaches this value
 743                         if (sys_ticrate.value <= 0)
 744                                 advancetime = sv_timer;
 745                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
 746                         {
 747                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
 748                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
 749                                 framelimit = 10;
 750                                 aborttime = realtime + 0.1;
 751                         }
 752                         else
 753                         {
 754                                 advancetime = sys_ticrate.value;
 755                                 // listen servers can run multiple server frames per client frame
 756                                 if (cls.state == ca_connected)
 757                                 {
 758                                         framelimit = 10;
 759                                         aborttime = realtime + 0.1;
 760                                 }
 761                         }
 762                         advancetime = min(advancetime, 0.1);
 763
 764                         if(advancetime > 0)
 765                         {
 766                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
 767                                 ++svs.perf_acc_offset_samples;
 768                                 svs.perf_acc_offset += offset;
 769                                 svs.perf_acc_offset_squared += offset * offset;
 770                                 if(svs.perf_acc_offset_max < offset)
 771                                         svs.perf_acc_offset_max = offset;
 772                         }
 773
 774                         // only advance time if not paused
 775                         // the game also pauses in singleplayer when menu or console is used
 776                         sv.frametime = advancetime * slowmo.value;
 777                         if (host_framerate.value)
 778                                 sv.frametime = host_framerate.value;
 779                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
 780                                 sv.frametime = 0;
 781
 782                         // setup the VM frame
 783                         SV_VM_Begin();
 784
 785                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
 786                         {
 787                                 sv_timer -= advancetime;
 788
 789                                 // move things around and think unless paused
 790                                 if (sv.frametime)
 791                                         SV_Physics();
 792
 793                                 // if this server frame took too long, break out of the loop
 794                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
 795                                         break;
 796                         }
 797
 798                         // send all messages to the clients
 799                         SV_SendClientMessages();
 800
 801                         // end the server VM frame
 802                         SV_VM_End();
 803
 804                         // send an heartbeat if enough time has passed since the last one
 805                         NetConn_Heartbeat(0);
 806                 }
 807
 808         //-------------------
 809         //
 810         // client operations
 811         //
 812         //-------------------
 813
 814                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
 815                 {
 816                         // decide the simulation time
 817                         if (cls.capturevideo.active)
 818                         {
 819                                 if (cls.capturevideo.realtime)
 820                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
 821                                 else
 822                                 {
 823                                         clframetime = 1.0 / cls.capturevideo.framerate;
 824                                         cl.realframetime = max(cl_timer, clframetime);
 825                                 }
 826                         }
 827                         else if (vid_activewindow)
 828                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
 829                         else
 830                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
 831
 832                         // apply slowmo scaling
 833                         clframetime *= cl.movevars_timescale;
 834                         // scale playback speed of demos by slowmo cvar
 835                         if (cls.demoplayback)
 836                         {
 837                                 clframetime *= slowmo.value;
 838                                 // if demo playback is paused, don't advance time at all
 839                                 if (cls.demopaused)
 840                                         clframetime = 0;
 841                         }
 842
 843                         // host_framerate overrides all else
 844                         if (host_framerate.value)
 845                                 clframetime = host_framerate.value;
 846
 847                         if (cls.timedemo)
 848                                 clframetime = cl.realframetime = cl_timer;
 849
 850                         // deduct the frame time from the accumulator
 851                         cl_timer -= cl.realframetime;
 852
 853                         cl.oldtime = cl.time;
 854                         cl.time += clframetime;
 855
 856                         // Collect input into cmd
 857                         CL_Input();
 858
 859                         // check for new packets
 860                         NetConn_ClientFrame();
 861
 862                         // read a new frame from a demo if needed
 863                         CL_ReadDemoMessage();
 864
 865                         // now that packets have been read, send input to server
 866                         CL_SendMove();
 867
 868                         // update client world (interpolate entities, create trails, etc)
 869                         CL_UpdateWorld();
 870
 871                         // update video
 872                         if (host_speeds.integer)
 873                                 time1 = Sys_DoubleTime();
 874
 875                         //ui_update();
 876
 877                         CL_Video_Frame();
 878                         CL_Gecko_Frame();
 879
 880                         CL_UpdateScreen();
 881
 882                         if (host_speeds.integer)
 883                                 time2 = Sys_DoubleTime();
 884
 885                         // update audio
 886                         if(cl.csqc_usecsqclistener)
 887                         {
 888                                 S_Update(&cl.csqc_listenermatrix);
 889                                 cl.csqc_usecsqclistener = false;
 890                         }
 891                         else
 892                                 S_Update(&r_refdef.view.matrix);
 893
 894                         CDAudio_Update();
 895
 896                         if (host_speeds.integer)
 897                         {
 898                                 pass1 = (int)((time1 - time3)*1000000);
 899                                 time3 = Sys_DoubleTime();
 900                                 pass2 = (int)((time2 - time1)*1000000);
 901                                 pass3 = (int)((time3 - time2)*1000000);
 902                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
 903                                                         pass1+pass2+pass3, pass1, pass2, pass3);
 904                         }
 905                 }
 906
 907                 // if there is some time remaining from this frame, reset the timers
 908                 if (cl_timer >= 0)
 909                         cl_timer = 0;
 910                 if (sv_timer >= 0)
 911                 {
 912                         svs.perf_acc_lost += sv_timer;
 913                         sv_timer = 0;
 914                 }
 915
 916                 host_framecount++;
 917         }
 918 }
 919
 920 //============================================================================
 921
 922 qboolean vid_opened = false;
 923 void Host_StartVideo(void)
 924 {
 925         if (!vid_opened && cls.state != ca_dedicated)
 926         {
 927                 vid_opened = true;
 928                 VID_Start();
 929                 CDAudio_Startup();
 930         }
 931 }
 932
 933 char engineversion[128];
 934
 935 qboolean sys_nostdout = false;
 936
 937 extern void Render_Init(void);
 938 extern void Mathlib_Init(void);
 939 extern void FS_Init(void);
 940 extern void FS_Shutdown(void);
 941 extern void PR_Cmd_Init(void);
 942 extern void COM_Init_Commands(void);
 943 extern void FS_Init_Commands(void);
 944 extern qboolean host_stuffcmdsrun;
 945
 946 /*
 947 ====================
 948 Host_Init
 949 ====================
 950 */
 951 static void Host_Init (void)
 952 {
 953         int i;
 954         const char* os;
 955
 956         if (COM_CheckParm("-profilegameonly"))
 957                 Sys_AllowProfiling(false);
 958
 959         // LordHavoc: quake never seeded the random number generator before... heh
 960         if (COM_CheckParm("-benchmark"))
 961                 srand(0); // predictable random sequence for -benchmark
 962         else
 963                 srand(time(NULL));
 964
 965         // FIXME: this is evil, but possibly temporary
 966 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
 967         if (COM_CheckParm("-developer"))
 968         {
 969                 developer.value = developer.integer = 100;
 970                 developer.string = "100";
 971         }
 972
 973         if (COM_CheckParm("-developer2"))
 974         {
 975                 developer.value = developer.integer = 100;
 976                 developer.string = "100";
 977                 developer_memory.value = developer_memory.integer = 100;
 978                 developer.string = "100";
 979                 developer_memorydebug.value = developer_memorydebug.integer = 100;
 980                 developer_memorydebug.string = "100";
 981         }
 982
 983 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
 984         if (COM_CheckParm("-nostdout"))
 985                 sys_nostdout = 1;
 986
 987         // used by everything
 988         Memory_Init();
 989
 990         // initialize console command/cvar/alias/command execution systems
 991         Cmd_Init();
 992
 993         // initialize memory subsystem cvars/commands
 994         Memory_Init_Commands();
 995
 996         // initialize console and logging and its cvars/commands
 997         Con_Init();
 998
 999         // initialize various cvars that could not be initialized earlier
1000         Curl_Init_Commands();
1001         Cmd_Init_Commands();
1002         Sys_Init_Commands();
1003         COM_Init_Commands();
1004         FS_Init_Commands();
1005
1006         // initialize console window (only used by sys_win.c)
1007         Sys_InitConsole();
1008
1009         // detect gamemode from commandline options or executable name
1010         COM_InitGameType();
1011
1012         // construct a version string for the corner of the console
1013         os = DP_OS_NAME;
1014         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1015         Con_Printf("%s\n", engineversion);
1016
1017         // initialize ixtable
1018         Mathlib_Init();
1019
1020         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1021         FS_Init();
1022
1023         NetConn_Init();
1024         Curl_Init();
1025         //PR_Init();
1026         //PR_Cmd_Init();
1027         PRVM_Init();
1028         Mod_Init();
1029         World_Init();
1030         SV_Init();
1031         Host_InitCommands();
1032         Host_InitLocal();
1033         Host_ServerOptions();
1034
1035         if (cls.state != ca_dedicated)
1036         {
1037                 Con_Printf("Initializing client\n");
1038
1039                 R_Modules_Init();
1040                 Palette_Init();
1041                 MR_Init_Commands();
1042                 VID_Shared_Init();
1043                 VID_Init();
1044                 Render_Init();
1045                 S_Init();
1046                 CDAudio_Init();
1047                 Key_Init();
1048                 V_Init();
1049                 CL_Init();
1050         }
1051
1052         // set up the default startmap_sp and startmap_dm aliases (mods can
1053         // override these) and then execute the quake.rc startup script
1054         if (gamemode == GAME_NEHAHRA)
1055                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1056         else if (gamemode == GAME_TRANSFUSION)
1057                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1058         else if (gamemode == GAME_TEU)
1059                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1060         else
1061                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1062         Cbuf_Execute();
1063
1064         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1065         if (!host_stuffcmdsrun)
1066         {
1067                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1068                 Cbuf_Execute();
1069         }
1070
1071         // put up the loading image so the user doesn't stare at a black screen...
1072         SCR_BeginLoadingPlaque();
1073
1074         // FIXME: put this into some neat design, but the menu should be allowed to crash
1075         // without crashing the whole game, so this should just be a short-time solution
1076
1077         // here comes the not so critical stuff
1078         if (setjmp(host_abortframe)) {
1079                 return;
1080         }
1081
1082         if (cls.state != ca_dedicated)
1083         {
1084                 MR_Init();
1085         }
1086
1087         // check for special benchmark mode
1088 // 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)
1089         i = COM_CheckParm("-benchmark");
1090         if (i && i + 1 < com_argc)
1091         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1092         {
1093                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1094                 Cbuf_Execute();
1095         }
1096
1097         // check for special demo mode
1098 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1099         i = COM_CheckParm("-demo");
1100         if (i && i + 1 < com_argc)
1101         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1102         {
1103                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1104                 Cbuf_Execute();
1105         }
1106
1107 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1108         i = COM_CheckParm("-capturedemo");
1109         if (i && i + 1 < com_argc)
1110         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1111         {
1112                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1113                 Cbuf_Execute();
1114         }
1115
1116         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1117         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1118         {
1119                 Cbuf_AddText("startmap_dm\n");
1120                 Cbuf_Execute();
1121         }
1122
1123         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1124         {
1125                 Cbuf_AddText("togglemenu\n");
1126                 Cbuf_Execute();
1127         }
1128
1129         Con_DPrint("========Initialized=========\n");
1130
1131         //Host_StartVideo();
1132 }
1133
1134
1135 /*
1136 ===============
1137 Host_Shutdown
1138
1139 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1140 to run quit through here before the final handoff to the sys code.
1141 ===============
1142 */
1143 void Host_Shutdown(void)
1144 {
1145         static qboolean isdown = false;
1146
1147         if (isdown)
1148         {
1149                 Con_Print("recursive shutdown\n");
1150                 return;
1151         }
1152         if (setjmp(host_abortframe))
1153         {
1154                 Con_Print("aborted the quitting frame?!?\n");
1155                 return;
1156         }
1157         isdown = true;
1158
1159         // be quiet while shutting down
1160         S_StopAllSounds();
1161
1162         // disconnect client from server if active
1163         CL_Disconnect();
1164
1165         // shut down local server if active
1166         Host_ShutdownServer ();
1167
1168         // Shutdown menu
1169         if(MR_Shutdown)
1170                 MR_Shutdown();
1171
1172         // AK shutdown PRVM
1173         // AK hmm, no PRVM_Shutdown(); yet
1174
1175         CL_Gecko_Shutdown();
1176         CL_Video_Shutdown();
1177
1178         Host_SaveConfig();
1179
1180         CDAudio_Shutdown ();
1181         S_Terminate ();
1182         Curl_Shutdown ();
1183         NetConn_Shutdown ();
1184         //PR_Shutdown ();
1185
1186         if (cls.state != ca_dedicated)
1187         {
1188                 R_Modules_Shutdown();
1189                 VID_Shutdown();
1190         }
1191
1192         Cmd_Shutdown();
1193         CL_Shutdown();
1194         Sys_Shutdown();
1195         Log_Close();
1196         FS_Shutdown();
1197         Memory_Shutdown();
1198 }
1199