DP_QC_GETTIME
[divverent/darkplaces.git] / 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 double host_starttime = 0;
58
59 // pretend frames take this amount of time (in seconds), 0 = realtime
60 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"};
61 // shows time used by certain subsystems
62 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
63 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"};
64 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
65 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
66 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
67 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"};
68 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
69 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)"};
70 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"};
71
72 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
73 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)"};
74 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
75 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
76
77 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
78 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
79
80 /*
81 ================
82 Host_AbortCurrentFrame
83
84 aborts the current host frame and goes on with the next one
85 ================
86 */
87 void Host_AbortCurrentFrame(void)
88 {
89         longjmp (host_abortframe, 1);
90 }
91
92 /*
93 ================
94 Host_Error
95
96 This shuts down both the client and server
97 ================
98 */
99 void Host_Error (const char *error, ...)
100 {
101         static char hosterrorstring1[MAX_INPUTLINE];
102         static char hosterrorstring2[MAX_INPUTLINE];
103         static qboolean hosterror = false;
104         va_list argptr;
105
106         // turn off rcon redirect if it was active when the crash occurred
107         // to prevent loops when it is a networking problem
108         Con_Rcon_Redirect_Abort();
109
110         va_start (argptr,error);
111         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
112         va_end (argptr);
113
114         Con_Printf("Host_Error: %s\n", hosterrorstring1);
115
116         // LordHavoc: if crashing very early, or currently shutting down, do
117         // Sys_Error instead
118         if (host_framecount < 3 || host_shuttingdown)
119                 Sys_Error ("Host_Error: %s", hosterrorstring1);
120
121         if (hosterror)
122                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
123         hosterror = true;
124
125         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
126
127         CL_Parse_DumpPacket();
128
129         CL_Parse_ErrorCleanUp();
130
131         //PR_Crash();
132
133         // print out where the crash happened, if it was caused by QC (and do a cleanup)
134         PRVM_Crash();
135
136
137         Host_ShutdownServer ();
138
139         if (cls.state == ca_dedicated)
140                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
141
142         CL_Disconnect ();
143         cls.demonum = -1;
144
145         hosterror = false;
146
147         Host_AbortCurrentFrame();
148 }
149
150 void Host_ServerOptions (void)
151 {
152         int i;
153
154         // general default
155         svs.maxclients = 8;
156
157 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
158 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
159         // if no client is in the executable or -dedicated is specified on
160         // commandline, start a dedicated server
161         i = COM_CheckParm ("-dedicated");
162         if (i || !cl_available)
163         {
164                 cls.state = ca_dedicated;
165                 // check for -dedicated specifying how many players
166                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
167                         svs.maxclients = atoi (com_argv[i+1]);
168                 if (COM_CheckParm ("-listen"))
169                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
170                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
171                 Cvar_SetValue("sv_public", 1);
172         }
173         else if (cl_available)
174         {
175                 // client exists and not dedicated, check if -listen is specified
176                 cls.state = ca_disconnected;
177                 i = COM_CheckParm ("-listen");
178                 if (i)
179                 {
180                         // default players unless specified
181                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
182                                 svs.maxclients = atoi (com_argv[i+1]);
183                 }
184                 else
185                 {
186                         // default players in some games, singleplayer in most
187                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
188                                 svs.maxclients = 1;
189                 }
190         }
191
192         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
193
194         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
195
196         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
197                 Cvar_SetValueQuick(&deathmatch, 1);
198 }
199
200 /*
201 =======================
202 Host_InitLocal
203 ======================
204 */
205 void Host_SaveConfig_f(void);
206 void Host_LoadConfig_f(void);
207 extern cvar_t sv_writepicture_quality;
208 static void Host_InitLocal (void)
209 {
210         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
211         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
212
213         Cvar_RegisterVariable (&host_framerate);
214         Cvar_RegisterVariable (&host_speeds);
215         Cvar_RegisterVariable (&cl_minfps);
216         Cvar_RegisterVariable (&cl_minfps_fade);
217         Cvar_RegisterVariable (&cl_minfps_qualitymax);
218         Cvar_RegisterVariable (&cl_minfps_qualitymin);
219         Cvar_RegisterVariable (&cl_minfps_qualitypower);
220         Cvar_RegisterVariable (&cl_minfps_qualityscale);
221         Cvar_RegisterVariable (&cl_maxfps);
222         Cvar_RegisterVariable (&cl_maxidlefps);
223
224         Cvar_RegisterVariable (&developer);
225         Cvar_RegisterVariable (&developer_loadfile);
226         Cvar_RegisterVariable (&developer_loading);
227         Cvar_RegisterVariable (&developer_entityparsing);
228
229         Cvar_RegisterVariable (&timestamps);
230         Cvar_RegisterVariable (&timeformat);
231
232         Cvar_RegisterVariable (&sv_writepicture_quality);
233 }
234
235
236 /*
237 ===============
238 Host_SaveConfig_f
239
240 Writes key bindings and archived cvars to config.cfg
241 ===============
242 */
243 void Host_SaveConfig_to(const char *file)
244 {
245         qfile_t *f;
246
247 // dedicated servers initialize the host but don't parse and set the
248 // config.cfg cvars
249         // LordHavoc: don't save a config if it crashed in startup
250         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
251         {
252                 f = FS_OpenRealFile(file, "wb", false);
253                 if (!f)
254                 {
255                         Con_Printf("Couldn't write %s.\n", file);
256                         return;
257                 }
258
259                 Key_WriteBindings (f);
260                 Cvar_WriteVariables (f);
261
262                 FS_Close (f);
263         }
264 }
265 void Host_SaveConfig(void)
266 {
267         Host_SaveConfig_to("config.cfg");
268 }
269 void Host_SaveConfig_f(void)
270 {
271         const char *file = "config.cfg";
272
273         if(Cmd_Argc() >= 2) {
274                 file = Cmd_Argv(1);
275                 Con_Printf("Saving to %s\n", file);
276         }
277
278         Host_SaveConfig_to(file);
279 }
280
281 /*
282 ===============
283 Host_LoadConfig_f
284
285 Resets key bindings and cvars to defaults and then reloads scripts
286 ===============
287 */
288 void Host_LoadConfig_f(void)
289 {
290         // unlock the cvar default strings so they can be updated by the new default.cfg
291         Cvar_UnlockDefaults();
292         // reset cvars to their defaults, and then exec startup scripts again
293         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
294 }
295
296 /*
297 =================
298 SV_ClientPrint
299
300 Sends text across to be displayed
301 FIXME: make this just a stuffed echo?
302 =================
303 */
304 void SV_ClientPrint(const char *msg)
305 {
306         if (host_client->netconnection)
307         {
308                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
309                 MSG_WriteString(&host_client->netconnection->message, msg);
310         }
311 }
312
313 /*
314 =================
315 SV_ClientPrintf
316
317 Sends text across to be displayed
318 FIXME: make this just a stuffed echo?
319 =================
320 */
321 void SV_ClientPrintf(const char *fmt, ...)
322 {
323         va_list argptr;
324         char msg[MAX_INPUTLINE];
325
326         va_start(argptr,fmt);
327         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
328         va_end(argptr);
329
330         SV_ClientPrint(msg);
331 }
332
333 /*
334 =================
335 SV_BroadcastPrint
336
337 Sends text to all active clients
338 =================
339 */
340 void SV_BroadcastPrint(const char *msg)
341 {
342         int i;
343         client_t *client;
344
345         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
346         {
347                 if (client->active && client->netconnection)
348                 {
349                         MSG_WriteByte(&client->netconnection->message, svc_print);
350                         MSG_WriteString(&client->netconnection->message, msg);
351                 }
352         }
353
354         if (sv_echobprint.integer && cls.state == ca_dedicated)
355                 Con_Print(msg);
356 }
357
358 /*
359 =================
360 SV_BroadcastPrintf
361
362 Sends text to all active clients
363 =================
364 */
365 void SV_BroadcastPrintf(const char *fmt, ...)
366 {
367         va_list argptr;
368         char msg[MAX_INPUTLINE];
369
370         va_start(argptr,fmt);
371         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
372         va_end(argptr);
373
374         SV_BroadcastPrint(msg);
375 }
376
377 /*
378 =================
379 Host_ClientCommands
380
381 Send text over to the client to be executed
382 =================
383 */
384 void Host_ClientCommands(const char *fmt, ...)
385 {
386         va_list argptr;
387         char string[MAX_INPUTLINE];
388
389         if (!host_client->netconnection)
390                 return;
391
392         va_start(argptr,fmt);
393         dpvsnprintf(string, sizeof(string), fmt, argptr);
394         va_end(argptr);
395
396         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
397         MSG_WriteString(&host_client->netconnection->message, string);
398 }
399
400 /*
401 =====================
402 SV_DropClient
403
404 Called when the player is getting totally kicked off the host
405 if (crash = true), don't bother sending signofs
406 =====================
407 */
408 void SV_DropClient(qboolean crash)
409 {
410         int i;
411         Con_Printf("Client \"%s\" dropped\n", host_client->name);
412
413         SV_StopDemoRecording(host_client);
414
415         // make sure edict is not corrupt (from a level change for example)
416         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
417
418         if (host_client->netconnection)
419         {
420                 // free the client (the body stays around)
421                 if (!crash)
422                 {
423                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
424                         unsigned char bufdata[8];
425                         sizebuf_t buf;
426                         memset(&buf, 0, sizeof(buf));
427                         buf.data = bufdata;
428                         buf.maxsize = sizeof(bufdata);
429                         MSG_WriteByte(&buf, svc_disconnect);
430                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
431                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
432                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
433                 }
434                 // break the net connection
435                 NetConn_Close(host_client->netconnection);
436                 host_client->netconnection = NULL;
437         }
438
439         // call qc ClientDisconnect function
440         // LordHavoc: don't call QC if server is dead (avoids recursive
441         // Host_Error in some mods when they run out of edicts)
442         if (host_client->clientconnectcalled && sv.active && host_client->edict)
443         {
444                 // call the prog function for removing a client
445                 // this will set the body to a dead frame, among other things
446                 int saveSelf = prog->globals.server->self;
447                 host_client->clientconnectcalled = false;
448                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
449                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
450                 prog->globals.server->self = saveSelf;
451         }
452
453         // if a download is active, close it
454         if (host_client->download_file)
455         {
456                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
457                 FS_Close(host_client->download_file);
458                 host_client->download_file = NULL;
459                 host_client->download_name[0] = 0;
460                 host_client->download_expectedposition = 0;
461                 host_client->download_started = false;
462         }
463
464         // remove leaving player from scoreboard
465         host_client->name[0] = 0;
466         host_client->colors = 0;
467         host_client->frags = 0;
468         // send notification to all clients
469         // get number of client manually just to make sure we get it right...
470         i = host_client - svs.clients;
471         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
472         MSG_WriteByte (&sv.reliable_datagram, i);
473         MSG_WriteString (&sv.reliable_datagram, host_client->name);
474         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
475         MSG_WriteByte (&sv.reliable_datagram, i);
476         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
477         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
478         MSG_WriteByte (&sv.reliable_datagram, i);
479         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
480
481         // free the client now
482         if (host_client->entitydatabase)
483                 EntityFrame_FreeDatabase(host_client->entitydatabase);
484         if (host_client->entitydatabase4)
485                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
486         if (host_client->entitydatabase5)
487                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
488
489         if (sv.active)
490         {
491                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
492                 PRVM_ED_ClearEdict(host_client->edict);
493         }
494
495         // clear the client struct (this sets active to false)
496         memset(host_client, 0, sizeof(*host_client));
497
498         // update server listing on the master because player count changed
499         // (which the master uses for filtering empty/full servers)
500         NetConn_Heartbeat(1);
501
502         if (sv.loadgame)
503         {
504                 for (i = 0;i < svs.maxclients;i++)
505                         if (svs.clients[i].active && !svs.clients[i].spawned)
506                                 break;
507                 if (i == svs.maxclients)
508                 {
509                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
510                         sv.paused = sv.loadgame = false; // we're basically done with loading now
511                 }
512         }
513 }
514
515 /*
516 ==================
517 Host_ShutdownServer
518
519 This only happens at the end of a game, not between levels
520 ==================
521 */
522 void Host_ShutdownServer(void)
523 {
524         int i;
525
526         Con_DPrintf("Host_ShutdownServer\n");
527
528         if (!sv.active)
529                 return;
530
531         NetConn_Heartbeat(2);
532         NetConn_Heartbeat(2);
533
534 // make sure all the clients know we're disconnecting
535         SV_VM_Begin();
536         if(prog->loaded)
537                 if(prog->funcoffsets.SV_Shutdown)
538                 {
539                         func_t s = prog->funcoffsets.SV_Shutdown;
540                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
541                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
542                 }
543         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
544                 if (host_client->active)
545                         SV_DropClient(false); // server shutdown
546         SV_VM_End();
547
548         NetConn_CloseServerPorts();
549
550         sv.active = false;
551 //
552 // clear structures
553 //
554         memset(&sv, 0, sizeof(sv));
555         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
556 }
557
558
559 //============================================================================
560
561 /*
562 ===================
563 Host_GetConsoleCommands
564
565 Add them exactly as if they had been typed at the console
566 ===================
567 */
568 void Host_GetConsoleCommands (void)
569 {
570         char *cmd;
571
572         while (1)
573         {
574                 cmd = Sys_ConsoleInput ();
575                 if (!cmd)
576                         break;
577                 Cbuf_AddText (cmd);
578         }
579 }
580
581 /*
582 ==================
583 Host_TimeReport
584
585 Returns a time report string, for example for
586 ==================
587 */
588 const char *Host_TimingReport()
589 {
590         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);
591 }
592
593 /*
594 ==================
595 Host_Frame
596
597 Runs all active servers
598 ==================
599 */
600 static void Host_Init(void);
601 void Host_Main(void)
602 {
603         double time1 = 0;
604         double time2 = 0;
605         double time3 = 0;
606         double cl_timer, sv_timer;
607         double clframetime, deltarealtime, oldrealtime;
608         double wait;
609         int pass1, pass2, pass3, i;
610
611         Host_Init();
612
613         cl_timer = 0;
614         sv_timer = 0;
615
616         realtime = host_starttime = Sys_DoubleTime();
617         for (;;)
618         {
619                 if (setjmp(host_abortframe))
620                         continue;                       // something bad happened, or the server disconnected
621
622                 oldrealtime = realtime;
623                 realtime = Sys_DoubleTime();
624
625                 deltarealtime = realtime - oldrealtime;
626                 cl_timer += deltarealtime;
627                 sv_timer += deltarealtime;
628
629                 svs.perf_acc_realtime += deltarealtime;
630
631                 // Look for clients who have spawned
632                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
633                         if(host_client->spawned)
634                                 if(host_client->netconnection)
635                                         break;
636                 if(i == svs.maxclients)
637                 {
638                         // Nobody is looking? Then we won't do timing...
639                         // Instead, reset it to zero
640                         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;
641                 }
642                 else if(svs.perf_acc_realtime > 5)
643                 {
644                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
645                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
646                         if(svs.perf_acc_offset_samples > 0)
647                         {
648                                 svs.perf_offset_max = svs.perf_acc_offset_max;
649                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
650                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
651                         }
652                         if(svs.perf_lost > 0)
653                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
654                         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;
655                 }
656
657                 if (slowmo.value < 0.00001 && slowmo.value != 0)
658                         Cvar_SetValue("slowmo", 0);
659                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
660                         Cvar_SetValue("host_framerate", 0);
661
662                 // keep the random time dependent, but not when playing demos/benchmarking
663                 if(!*sv_random_seed.string && !cls.demoplayback)
664                         rand();
665
666                 cl.islocalgame = NetConn_IsLocalGame();
667
668                 // begin gathering mouse input
669                 in_mouse_x = in_mouse_y = 0;
670
671                 // get new key events
672                 Sys_SendKeyEvents();
673
674                 NetConn_UpdateSockets();
675
676                 Log_DestBuffer_Flush();
677
678                 // receive packets on each main loop iteration, as the main loop may
679                 // be undersleeping due to select() detecting a new packet
680                 if (sv.active)
681                         NetConn_ServerFrame();
682
683                 Curl_Run();
684
685                 // check for commands typed to the host
686                 Host_GetConsoleCommands();
687
688                 // when a server is running we only execute console commands on server frames
689                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
690                 // otherwise we execute them on client frames
691                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
692                 {
693                         // process console commands
694                         Cbuf_Execute();
695                 }
696
697                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
698
699                 // if the accumulators haven't become positive yet, wait a while
700                 if (cls.state == ca_dedicated)
701                         wait = sv_timer * -1000000.0;
702                 else if (!sv.active)
703                         wait = cl_timer * -1000000.0;
704                 else
705                         wait = max(cl_timer, sv_timer) * -1000000.0;
706                 wait = bound(0, wait, 100000);
707
708                 if (!cls.timedemo && wait >= 1)
709                 {
710                         double time0 = Sys_DoubleTime();
711                         if (sv_checkforpacketsduringsleep.integer)
712                                 NetConn_SleepMicroseconds((int)wait);
713                         else
714                                 Sys_Sleep((int)wait);
715                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
716                         continue;
717                 }
718
719         //-------------------
720         //
721         // server operations
722         //
723         //-------------------
724
725                 // limit the frametime steps to no more than 100ms each
726                 if (cl_timer > 0.1)
727                         cl_timer = 0.1;
728                 if (sv_timer > 0.1)
729                 {
730                         svs.perf_acc_lost += (sv_timer - 0.1);
731                         sv_timer = 0.1;
732                 }
733
734                 if (sv.active && sv_timer > 0)
735                 {
736                         // execute one or more server frames, with an upper limit on how much
737                         // execution time to spend on server frames to avoid freezing the game if
738                         // the server is overloaded, this execution time limit means the game will
739                         // slow down if the server is taking too long.
740                         int framecount, framelimit = 1;
741                         double advancetime, aborttime = 0;
742                         float offset;
743
744                         // run the world state
745                         // don't allow simulation to run too fast or too slow or logic glitches can occur
746
747                         // stop running server frames if the wall time reaches this value
748                         if (sys_ticrate.value <= 0)
749                                 advancetime = sv_timer;
750                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
751                         {
752                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
753                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
754                                 framelimit = 10;
755                                 aborttime = realtime + 0.1;
756                         }
757                         else
758                         {
759                                 advancetime = sys_ticrate.value;
760                                 // listen servers can run multiple server frames per client frame
761                                 if (cls.state == ca_connected)
762                                 {
763                                         framelimit = 10;
764                                         aborttime = realtime + 0.1;
765                                 }
766                         }
767                         advancetime = min(advancetime, 0.1);
768
769                         if(advancetime > 0)
770                         {
771                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
772                                 ++svs.perf_acc_offset_samples;
773                                 svs.perf_acc_offset += offset;
774                                 svs.perf_acc_offset_squared += offset * offset;
775                                 if(svs.perf_acc_offset_max < offset)
776                                         svs.perf_acc_offset_max = offset;
777                         }
778
779                         // only advance time if not paused
780                         // the game also pauses in singleplayer when menu or console is used
781                         sv.frametime = advancetime * slowmo.value;
782                         if (host_framerate.value)
783                                 sv.frametime = host_framerate.value;
784                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
785                                 sv.frametime = 0;
786
787                         // setup the VM frame
788                         SV_VM_Begin();
789
790                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
791                         {
792                                 sv_timer -= advancetime;
793
794                                 // move things around and think unless paused
795                                 if (sv.frametime)
796                                         SV_Physics();
797
798                                 // if this server frame took too long, break out of the loop
799                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
800                                         break;
801                         }
802
803                         // send all messages to the clients
804                         SV_SendClientMessages();
805                         
806                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
807                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
808                                 PRVM_ExecuteProgram(prog->funcoffsets.SV_PausedTic, "QC function SV_PausedTic is missing");
809                         }
810
811                         // end the server VM frame
812                         SV_VM_End();
813
814                         // send an heartbeat if enough time has passed since the last one
815                         NetConn_Heartbeat(0);
816                 }
817
818         //-------------------
819         //
820         // client operations
821         //
822         //-------------------
823
824                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
825                 {
826                         // decide the simulation time
827                         if (cls.capturevideo.active)
828                         {
829                                 if (cls.capturevideo.realtime)
830                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
831                                 else
832                                 {
833                                         clframetime = 1.0 / cls.capturevideo.framerate;
834                                         cl.realframetime = max(cl_timer, clframetime);
835                                 }
836                         }
837                         else if (vid_activewindow && cl_maxfps.value >= 1)
838                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
839                         else if (!vid_activewindow && cl_maxidlefps.value >= 1)
840                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
841                         else
842                                 clframetime = cl.realframetime = cl_timer;
843
844                         // apply slowmo scaling
845                         clframetime *= cl.movevars_timescale;
846                         // scale playback speed of demos by slowmo cvar
847                         if (cls.demoplayback)
848                         {
849                                 clframetime *= slowmo.value;
850                                 // if demo playback is paused, don't advance time at all
851                                 if (cls.demopaused)
852                                         clframetime = 0;
853                         }
854
855                         // host_framerate overrides all else
856                         if (host_framerate.value)
857                                 clframetime = host_framerate.value;
858
859                         if (cls.timedemo)
860                                 clframetime = cl.realframetime = cl_timer;
861
862                         // deduct the frame time from the accumulator
863                         cl_timer -= cl.realframetime;
864
865                         cl.oldtime = cl.time;
866                         cl.time += clframetime;
867
868                         // Collect input into cmd
869                         CL_Input();
870
871                         // check for new packets
872                         NetConn_ClientFrame();
873
874                         // read a new frame from a demo if needed
875                         CL_ReadDemoMessage();
876
877                         // now that packets have been read, send input to server
878                         CL_SendMove();
879
880                         // update client world (interpolate entities, create trails, etc)
881                         CL_UpdateWorld();
882
883                         // update video
884                         if (host_speeds.integer)
885                                 time1 = Sys_DoubleTime();
886
887                         CL_Video_Frame();
888                         CL_Gecko_Frame();
889
890                         CL_UpdateScreen();
891
892                         if (host_speeds.integer)
893                                 time2 = Sys_DoubleTime();
894
895                         // update audio
896                         if(cl.csqc_usecsqclistener)
897                         {
898                                 S_Update(&cl.csqc_listenermatrix);
899                                 cl.csqc_usecsqclistener = false;
900                         }
901                         else
902                                 S_Update(&r_refdef.view.matrix);
903
904                         CDAudio_Update();
905
906                         if (host_speeds.integer)
907                         {
908                                 pass1 = (int)((time1 - time3)*1000000);
909                                 time3 = Sys_DoubleTime();
910                                 pass2 = (int)((time2 - time1)*1000000);
911                                 pass3 = (int)((time3 - time2)*1000000);
912                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
913                                                         pass1+pass2+pass3, pass1, pass2, pass3);
914                         }
915                 }
916
917                 // if there is some time remaining from this frame, reset the timers
918                 if (cl_timer >= 0)
919                         cl_timer = 0;
920                 if (sv_timer >= 0)
921                 {
922                         svs.perf_acc_lost += sv_timer;
923                         sv_timer = 0;
924                 }
925
926                 host_framecount++;
927         }
928 }
929
930 //============================================================================
931
932 qboolean vid_opened = false;
933 void Host_StartVideo(void)
934 {
935         if (!vid_opened && cls.state != ca_dedicated)
936         {
937                 vid_opened = true;
938                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
939                 NetConn_UpdateSockets();
940                 VID_Start();
941                 CDAudio_Startup();
942         }
943 }
944
945 char engineversion[128];
946
947 qboolean sys_nostdout = false;
948
949 extern void Render_Init(void);
950 extern void Mathlib_Init(void);
951 extern void FS_Init(void);
952 extern void FS_Shutdown(void);
953 extern void PR_Cmd_Init(void);
954 extern void COM_Init_Commands(void);
955 extern void FS_Init_Commands(void);
956 extern qboolean host_stuffcmdsrun;
957
958 /*
959 ====================
960 Host_Init
961 ====================
962 */
963 static void Host_Init (void)
964 {
965         int i;
966         const char* os;
967
968         if (COM_CheckParm("-profilegameonly"))
969                 Sys_AllowProfiling(false);
970
971         // LordHavoc: quake never seeded the random number generator before... heh
972         if (COM_CheckParm("-benchmark"))
973                 srand(0); // predictable random sequence for -benchmark
974         else
975                 srand(time(NULL));
976
977         // FIXME: this is evil, but possibly temporary
978 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
979         if (COM_CheckParm("-developer"))
980         {
981                 developer.value = developer.integer = 1;
982                 developer.string = "1";
983         }
984
985         if (COM_CheckParm("-developer2"))
986         {
987                 developer.value = developer.integer = 100;
988                 developer.string = "100";
989                 developer_memory.value = developer_memory.integer = 100;
990                 developer.string = "100";
991                 developer_memorydebug.value = developer_memorydebug.integer = 100;
992                 developer_memorydebug.string = "100";
993         }
994
995 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
996         if (COM_CheckParm("-nostdout"))
997                 sys_nostdout = 1;
998
999         // used by everything
1000         Memory_Init();
1001
1002         // initialize console command/cvar/alias/command execution systems
1003         Cmd_Init();
1004
1005         // initialize memory subsystem cvars/commands
1006         Memory_Init_Commands();
1007
1008         // initialize console and logging and its cvars/commands
1009         Con_Init();
1010
1011         // initialize various cvars that could not be initialized earlier
1012         Curl_Init_Commands();
1013         Cmd_Init_Commands();
1014         Sys_Init_Commands();
1015         COM_Init_Commands();
1016         FS_Init_Commands();
1017
1018         // initialize console window (only used by sys_win.c)
1019         Sys_InitConsole();
1020
1021         // detect gamemode from commandline options or executable name
1022         COM_InitGameType();
1023
1024         // construct a version string for the corner of the console
1025         os = DP_OS_NAME;
1026         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1027         Con_Printf("%s\n", engineversion);
1028
1029         // initialize ixtable
1030         Mathlib_Init();
1031
1032         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1033         FS_Init();
1034
1035         NetConn_Init();
1036         Curl_Init();
1037         //PR_Init();
1038         //PR_Cmd_Init();
1039         PRVM_Init();
1040         Mod_Init();
1041         World_Init();
1042         SV_Init();
1043         Host_InitCommands();
1044         Host_InitLocal();
1045         Host_ServerOptions();
1046
1047         if (cls.state == ca_dedicated)
1048                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1049         else
1050         {
1051                 Con_DPrintf("Initializing client\n");
1052
1053                 R_Modules_Init();
1054                 Palette_Init();
1055                 MR_Init_Commands();
1056                 VID_Shared_Init();
1057                 VID_Init();
1058                 Render_Init();
1059                 S_Init();
1060                 CDAudio_Init();
1061                 Key_Init();
1062                 V_Init();
1063                 CL_Init();
1064         }
1065
1066         // set up the default startmap_sp and startmap_dm aliases (mods can
1067         // override these) and then execute the quake.rc startup script
1068         if (gamemode == GAME_NEHAHRA)
1069                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1070         else if (gamemode == GAME_TRANSFUSION)
1071                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1072         else if (gamemode == GAME_TEU)
1073                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1074         else
1075                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1076         Cbuf_Execute();
1077
1078         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1079         if (!host_stuffcmdsrun)
1080         {
1081                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1082                 Cbuf_Execute();
1083         }
1084
1085         // put up the loading image so the user doesn't stare at a black screen...
1086         SCR_BeginLoadingPlaque();
1087
1088         // FIXME: put this into some neat design, but the menu should be allowed to crash
1089         // without crashing the whole game, so this should just be a short-time solution
1090
1091         // here comes the not so critical stuff
1092         if (setjmp(host_abortframe)) {
1093                 return;
1094         }
1095
1096         if (cls.state != ca_dedicated)
1097         {
1098                 MR_Init();
1099         }
1100
1101         // check for special benchmark mode
1102 // 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)
1103         i = COM_CheckParm("-benchmark");
1104         if (i && i + 1 < com_argc)
1105         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1106         {
1107                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1108                 Cbuf_Execute();
1109         }
1110
1111         // check for special demo mode
1112 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1113         i = COM_CheckParm("-demo");
1114         if (i && i + 1 < com_argc)
1115         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1116         {
1117                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1118                 Cbuf_Execute();
1119         }
1120
1121 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1122         i = COM_CheckParm("-capturedemo");
1123         if (i && i + 1 < com_argc)
1124         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1125         {
1126                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1127                 Cbuf_Execute();
1128         }
1129
1130         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1131         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1132         {
1133                 Cbuf_AddText("startmap_dm\n");
1134                 Cbuf_Execute();
1135         }
1136
1137         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1138         {
1139                 Cbuf_AddText("togglemenu\n");
1140                 Cbuf_Execute();
1141         }
1142
1143         Con_DPrint("========Initialized=========\n");
1144
1145         //Host_StartVideo();
1146 }
1147
1148
1149 /*
1150 ===============
1151 Host_Shutdown
1152
1153 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1154 to run quit through here before the final handoff to the sys code.
1155 ===============
1156 */
1157 void Host_Shutdown(void)
1158 {
1159         static qboolean isdown = false;
1160
1161         if (isdown)
1162         {
1163                 Con_Print("recursive shutdown\n");
1164                 return;
1165         }
1166         if (setjmp(host_abortframe))
1167         {
1168                 Con_Print("aborted the quitting frame?!?\n");
1169                 return;
1170         }
1171         isdown = true;
1172
1173         // be quiet while shutting down
1174         S_StopAllSounds();
1175
1176         // disconnect client from server if active
1177         CL_Disconnect();
1178
1179         // shut down local server if active
1180         Host_ShutdownServer ();
1181
1182         // Shutdown menu
1183         if(MR_Shutdown)
1184                 MR_Shutdown();
1185
1186         // AK shutdown PRVM
1187         // AK hmm, no PRVM_Shutdown(); yet
1188
1189         CL_Gecko_Shutdown();
1190         CL_Video_Shutdown();
1191
1192         Host_SaveConfig();
1193
1194         CDAudio_Shutdown ();
1195         S_Terminate ();
1196         Curl_Shutdown ();
1197         NetConn_Shutdown ();
1198         //PR_Shutdown ();
1199
1200         if (cls.state != ca_dedicated)
1201         {
1202                 R_Modules_Shutdown();
1203                 VID_Shutdown();
1204         }
1205
1206         Cmd_Shutdown();
1207         CL_Shutdown();
1208         Sys_Shutdown();
1209         Log_Close();
1210         FS_Shutdown();
1211         Memory_Shutdown();
1212 }
1213