added prvm_offsets.h which centralizes field/global/function lookups for
[xonotic/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 #include "snd_main.h"
33 #include "thread.h"
34
35 /*
36
37 A server can always be started, even if the system started out as a client
38 to a remote system.
39
40 A client can NOT be started if the system started as a dedicated server.
41
42 Memory is cleared / released when a server or client begins, not when they end.
43
44 */
45
46 // how many frames have occurred
47 // (checked by Host_Error and Host_SaveConfig_f)
48 int host_framecount = 0;
49 // LordHavoc: set when quit is executed
50 qboolean host_shuttingdown = false;
51
52 // the real time since application started, without any slowmo or clamping
53 double realtime;
54
55 // current client
56 client_t *host_client;
57
58 jmp_buf host_abortframe;
59 double host_starttime = 0;
60
61 // pretend frames take this amount of time (in seconds), 0 = realtime
62 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"};
63 // shows time used by certain subsystems
64 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
65 cvar_t host_maxwait = {0, "host_maxwait","1000", "maximum sleep time requested from the operating system in millisecond. Larger sleeps will be done using multiple host_maxwait length sleeps. Lowering this value will increase CPU load, but may help working around problems with accuracy of sleep times."};
66 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"};
67 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
68 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
69 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
70 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"};
71 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
72 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)"};
73 cvar_t cl_maxfps_alwayssleep = {0, "cl_maxfps_alwayssleep","1", "gives up some processing time to other applications each frame, value in milliseconds, disabled if cl_maxfps is 0"};
74 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"};
75
76 cvar_t developer = {CVAR_SAVE, "developer","0", "shows debugging messages and information (recommended for all developers and level designers); the value -1 also suppresses buffering and logging these messages"};
77 cvar_t developer_extra = {0, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
78 cvar_t developer_insane = {0, "developer_insane", "0", "prints huge streams of information about internal workings, entire contents of files being read/written, etc.  Not recommended!"};
79 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)"};
80 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
81 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
82
83 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
84 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
85
86 /*
87 ================
88 Host_AbortCurrentFrame
89
90 aborts the current host frame and goes on with the next one
91 ================
92 */
93 void Host_AbortCurrentFrame(void)
94 {
95         longjmp (host_abortframe, 1);
96 }
97
98 /*
99 ================
100 Host_Error
101
102 This shuts down both the client and server
103 ================
104 */
105 void Host_Error (const char *error, ...)
106 {
107         static char hosterrorstring1[MAX_INPUTLINE];
108         static char hosterrorstring2[MAX_INPUTLINE];
109         static qboolean hosterror = false;
110         va_list argptr;
111
112         // turn off rcon redirect if it was active when the crash occurred
113         // to prevent loops when it is a networking problem
114         Con_Rcon_Redirect_Abort();
115
116         va_start (argptr,error);
117         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
118         va_end (argptr);
119
120         Con_Printf("Host_Error: %s\n", hosterrorstring1);
121
122         // LordHavoc: if crashing very early, or currently shutting down, do
123         // Sys_Error instead
124         if (host_framecount < 3 || host_shuttingdown)
125                 Sys_Error ("Host_Error: %s", hosterrorstring1);
126
127         if (hosterror)
128                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
129         hosterror = true;
130
131         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
132
133         CL_Parse_DumpPacket();
134
135         CL_Parse_ErrorCleanUp();
136
137         //PR_Crash();
138
139         // print out where the crash happened, if it was caused by QC (and do a cleanup)
140         PRVM_Crash();
141
142
143         Host_ShutdownServer ();
144
145         if (cls.state == ca_dedicated)
146                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
147
148         CL_Disconnect ();
149         cls.demonum = -1;
150
151         hosterror = false;
152
153         Host_AbortCurrentFrame();
154 }
155
156 void Host_ServerOptions (void)
157 {
158         int i;
159
160         // general default
161         svs.maxclients = 8;
162
163 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
164 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
165         // if no client is in the executable or -dedicated is specified on
166         // commandline, start a dedicated server
167         i = COM_CheckParm ("-dedicated");
168         if (i || !cl_available)
169         {
170                 cls.state = ca_dedicated;
171                 // check for -dedicated specifying how many players
172                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
173                         svs.maxclients = atoi (com_argv[i+1]);
174                 if (COM_CheckParm ("-listen"))
175                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
176                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
177                 Cvar_SetValue("sv_public", 1);
178         }
179         else if (cl_available)
180         {
181                 // client exists and not dedicated, check if -listen is specified
182                 cls.state = ca_disconnected;
183                 i = COM_CheckParm ("-listen");
184                 if (i)
185                 {
186                         // default players unless specified
187                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
188                                 svs.maxclients = atoi (com_argv[i+1]);
189                 }
190                 else
191                 {
192                         // default players in some games, singleplayer in most
193                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_XONOTIC && gamemode != GAME_BATTLEMECH)
194                                 svs.maxclients = 1;
195                 }
196         }
197
198         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
199
200         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
201
202         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
203                 Cvar_SetValueQuick(&deathmatch, 1);
204 }
205
206 /*
207 =======================
208 Host_InitLocal
209 ======================
210 */
211 void Host_SaveConfig_f(void);
212 void Host_LoadConfig_f(void);
213 extern cvar_t sv_writepicture_quality;
214 extern cvar_t r_texture_jpeg_fastpicmip;
215 static void Host_InitLocal (void)
216 {
217         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
218         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
219
220         Cvar_RegisterVariable (&host_framerate);
221         Cvar_RegisterVariable (&host_speeds);
222         Cvar_RegisterVariable (&host_maxwait);
223         Cvar_RegisterVariable (&cl_minfps);
224         Cvar_RegisterVariable (&cl_minfps_fade);
225         Cvar_RegisterVariable (&cl_minfps_qualitymax);
226         Cvar_RegisterVariable (&cl_minfps_qualitymin);
227         Cvar_RegisterVariable (&cl_minfps_qualitypower);
228         Cvar_RegisterVariable (&cl_minfps_qualityscale);
229         Cvar_RegisterVariable (&cl_maxfps);
230         Cvar_RegisterVariable (&cl_maxfps_alwayssleep);
231         Cvar_RegisterVariable (&cl_maxidlefps);
232
233         Cvar_RegisterVariable (&developer);
234         Cvar_RegisterVariable (&developer_extra);
235         Cvar_RegisterVariable (&developer_insane);
236         Cvar_RegisterVariable (&developer_loadfile);
237         Cvar_RegisterVariable (&developer_loading);
238         Cvar_RegisterVariable (&developer_entityparsing);
239
240         Cvar_RegisterVariable (&timestamps);
241         Cvar_RegisterVariable (&timeformat);
242
243         Cvar_RegisterVariable (&sv_writepicture_quality);
244         Cvar_RegisterVariable (&r_texture_jpeg_fastpicmip);
245 }
246
247
248 /*
249 ===============
250 Host_SaveConfig_f
251
252 Writes key bindings and archived cvars to config.cfg
253 ===============
254 */
255 void Host_SaveConfig_to(const char *file)
256 {
257         qfile_t *f;
258
259 // dedicated servers initialize the host but don't parse and set the
260 // config.cfg cvars
261         // LordHavoc: don't save a config if it crashed in startup
262         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
263         {
264                 f = FS_OpenRealFile(file, "wb", false);
265                 if (!f)
266                 {
267                         Con_Printf("Couldn't write %s.\n", file);
268                         return;
269                 }
270
271                 Key_WriteBindings (f);
272                 Cvar_WriteVariables (f);
273
274                 FS_Close (f);
275         }
276 }
277 void Host_SaveConfig(void)
278 {
279         Host_SaveConfig_to(CONFIGFILENAME);
280 }
281 void Host_SaveConfig_f(void)
282 {
283         const char *file = CONFIGFILENAME;
284
285         if(Cmd_Argc() >= 2) {
286                 file = Cmd_Argv(1);
287                 Con_Printf("Saving to %s\n", file);
288         }
289
290         Host_SaveConfig_to(file);
291 }
292
293 void Host_AddConfigText(void)
294 {
295         // set up the default startmap_sp and startmap_dm aliases (mods can
296         // override these) and then execute the quake.rc startup script
297         if (gamemode == GAME_NEHAHRA)
298                 Cbuf_InsertText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");
299         else if (gamemode == GAME_TRANSFUSION)
300                 Cbuf_InsertText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");
301         else if (gamemode == GAME_TEU)
302                 Cbuf_InsertText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
303         else
304                 Cbuf_InsertText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");
305 }
306
307 /*
308 ===============
309 Host_LoadConfig_f
310
311 Resets key bindings and cvars to defaults and then reloads scripts
312 ===============
313 */
314 void Host_LoadConfig_f(void)
315 {
316         // reset all cvars, commands and aliases to init values
317         Cmd_RestoreInitState();
318         // prepend a menu restart command to execute after the config
319         Cbuf_InsertText("\nmenu_restart\n");
320         // reset cvars to their defaults, and then exec startup scripts again
321         Host_AddConfigText();
322 }
323
324 /*
325 =================
326 SV_ClientPrint
327
328 Sends text across to be displayed
329 FIXME: make this just a stuffed echo?
330 =================
331 */
332 void SV_ClientPrint(const char *msg)
333 {
334         if (host_client->netconnection)
335         {
336                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
337                 MSG_WriteString(&host_client->netconnection->message, msg);
338         }
339 }
340
341 /*
342 =================
343 SV_ClientPrintf
344
345 Sends text across to be displayed
346 FIXME: make this just a stuffed echo?
347 =================
348 */
349 void SV_ClientPrintf(const char *fmt, ...)
350 {
351         va_list argptr;
352         char msg[MAX_INPUTLINE];
353
354         va_start(argptr,fmt);
355         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
356         va_end(argptr);
357
358         SV_ClientPrint(msg);
359 }
360
361 /*
362 =================
363 SV_BroadcastPrint
364
365 Sends text to all active clients
366 =================
367 */
368 void SV_BroadcastPrint(const char *msg)
369 {
370         int i;
371         client_t *client;
372
373         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
374         {
375                 if (client->active && client->netconnection)
376                 {
377                         MSG_WriteByte(&client->netconnection->message, svc_print);
378                         MSG_WriteString(&client->netconnection->message, msg);
379                 }
380         }
381
382         if (sv_echobprint.integer && cls.state == ca_dedicated)
383                 Con_Print(msg);
384 }
385
386 /*
387 =================
388 SV_BroadcastPrintf
389
390 Sends text to all active clients
391 =================
392 */
393 void SV_BroadcastPrintf(const char *fmt, ...)
394 {
395         va_list argptr;
396         char msg[MAX_INPUTLINE];
397
398         va_start(argptr,fmt);
399         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
400         va_end(argptr);
401
402         SV_BroadcastPrint(msg);
403 }
404
405 /*
406 =================
407 Host_ClientCommands
408
409 Send text over to the client to be executed
410 =================
411 */
412 void Host_ClientCommands(const char *fmt, ...)
413 {
414         va_list argptr;
415         char string[MAX_INPUTLINE];
416
417         if (!host_client->netconnection)
418                 return;
419
420         va_start(argptr,fmt);
421         dpvsnprintf(string, sizeof(string), fmt, argptr);
422         va_end(argptr);
423
424         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
425         MSG_WriteString(&host_client->netconnection->message, string);
426 }
427
428 /*
429 =====================
430 SV_DropClient
431
432 Called when the player is getting totally kicked off the host
433 if (crash = true), don't bother sending signofs
434 =====================
435 */
436 void SV_DropClient(qboolean crash)
437 {
438         int i;
439         Con_Printf("Client \"%s\" dropped\n", host_client->name);
440
441         SV_StopDemoRecording(host_client);
442
443         // make sure edict is not corrupt (from a level change for example)
444         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
445
446         if (host_client->netconnection)
447         {
448                 // tell the client to be gone
449                 if (!crash)
450                 {
451                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
452                         unsigned char bufdata[8];
453                         sizebuf_t buf;
454                         memset(&buf, 0, sizeof(buf));
455                         buf.data = bufdata;
456                         buf.maxsize = sizeof(bufdata);
457                         MSG_WriteByte(&buf, svc_disconnect);
458                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
459                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
460                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
461                 }
462         }
463
464         // call qc ClientDisconnect function
465         // LordHavoc: don't call QC if server is dead (avoids recursive
466         // Host_Error in some mods when they run out of edicts)
467         if (host_client->clientconnectcalled && sv.active && host_client->edict)
468         {
469                 // call the prog function for removing a client
470                 // this will set the body to a dead frame, among other things
471                 int saveSelf = prog->globals.server->self;
472                 host_client->clientconnectcalled = false;
473                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
474                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
475                 prog->globals.server->self = saveSelf;
476         }
477
478         if (host_client->netconnection)
479         {
480                 // break the net connection
481                 NetConn_Close(host_client->netconnection);
482                 host_client->netconnection = NULL;
483         }
484
485         // if a download is active, close it
486         if (host_client->download_file)
487         {
488                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
489                 FS_Close(host_client->download_file);
490                 host_client->download_file = NULL;
491                 host_client->download_name[0] = 0;
492                 host_client->download_expectedposition = 0;
493                 host_client->download_started = false;
494         }
495
496         // remove leaving player from scoreboard
497         host_client->name[0] = 0;
498         host_client->colors = 0;
499         host_client->frags = 0;
500         // send notification to all clients
501         // get number of client manually just to make sure we get it right...
502         i = host_client - svs.clients;
503         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
504         MSG_WriteByte (&sv.reliable_datagram, i);
505         MSG_WriteString (&sv.reliable_datagram, host_client->name);
506         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
507         MSG_WriteByte (&sv.reliable_datagram, i);
508         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
509         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
510         MSG_WriteByte (&sv.reliable_datagram, i);
511         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
512
513         // free the client now
514         if (host_client->entitydatabase)
515                 EntityFrame_FreeDatabase(host_client->entitydatabase);
516         if (host_client->entitydatabase4)
517                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
518         if (host_client->entitydatabase5)
519                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
520
521         if (sv.active)
522         {
523                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
524                 PRVM_ED_ClearEdict(host_client->edict);
525         }
526
527         // clear the client struct (this sets active to false)
528         memset(host_client, 0, sizeof(*host_client));
529
530         // update server listing on the master because player count changed
531         // (which the master uses for filtering empty/full servers)
532         NetConn_Heartbeat(1);
533
534         if (sv.loadgame)
535         {
536                 for (i = 0;i < svs.maxclients;i++)
537                         if (svs.clients[i].active && !svs.clients[i].spawned)
538                                 break;
539                 if (i == svs.maxclients)
540                 {
541                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
542                         sv.paused = sv.loadgame = false; // we're basically done with loading now
543                 }
544         }
545 }
546
547 /*
548 ==================
549 Host_ShutdownServer
550
551 This only happens at the end of a game, not between levels
552 ==================
553 */
554 void Host_ShutdownServer(void)
555 {
556         int i;
557
558         Con_DPrintf("Host_ShutdownServer\n");
559
560         if (!sv.active)
561                 return;
562
563         NetConn_Heartbeat(2);
564         NetConn_Heartbeat(2);
565
566 // make sure all the clients know we're disconnecting
567         SV_VM_Begin();
568         World_End(&sv.world);
569         if(prog->loaded)
570                 if(PRVM_serverfunction(SV_Shutdown))
571                 {
572                         func_t s = PRVM_serverfunction(SV_Shutdown);
573                         PRVM_serverfunction(SV_Shutdown) = 0; // prevent it from getting called again
574                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
575                 }
576         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
577                 if (host_client->active)
578                         SV_DropClient(false); // server shutdown
579         SV_VM_End();
580
581         NetConn_CloseServerPorts();
582
583         sv.active = false;
584 //
585 // clear structures
586 //
587         memset(&sv, 0, sizeof(sv));
588         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
589 }
590
591
592 //============================================================================
593
594 /*
595 ===================
596 Host_GetConsoleCommands
597
598 Add them exactly as if they had been typed at the console
599 ===================
600 */
601 void Host_GetConsoleCommands (void)
602 {
603         char *cmd;
604
605         while (1)
606         {
607                 cmd = Sys_ConsoleInput ();
608                 if (!cmd)
609                         break;
610                 Cbuf_AddText (cmd);
611         }
612 }
613
614 /*
615 ==================
616 Host_TimeReport
617
618 Returns a time report string, for example for
619 ==================
620 */
621 const char *Host_TimingReport(void)
622 {
623         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);
624 }
625
626 /*
627 ==================
628 Host_Frame
629
630 Runs all active servers
631 ==================
632 */
633 static void Host_Init(void);
634 void Host_Main(void)
635 {
636         double time1 = 0;
637         double time2 = 0;
638         double time3 = 0;
639         double cl_timer, sv_timer;
640         double clframetime, deltarealtime, oldrealtime;
641         double wait;
642         int pass1, pass2, pass3, i;
643
644         Host_Init();
645
646         cl_timer = 0;
647         sv_timer = 0;
648
649         realtime = host_starttime = Sys_DoubleTime();
650         for (;;)
651         {
652                 if (setjmp(host_abortframe))
653                 {
654                         SCR_ClearLoadingScreen(false);
655                         continue;                       // something bad happened, or the server disconnected
656                 }
657
658                 oldrealtime = realtime;
659                 realtime = Sys_DoubleTime();
660
661                 deltarealtime = realtime - oldrealtime;
662                 cl_timer += deltarealtime;
663                 sv_timer += deltarealtime;
664
665                 svs.perf_acc_realtime += deltarealtime;
666
667                 // Look for clients who have spawned
668                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
669                         if(host_client->spawned)
670                                 if(host_client->netconnection)
671                                         break;
672                 if(i == svs.maxclients)
673                 {
674                         // Nobody is looking? Then we won't do timing...
675                         // Instead, reset it to zero
676                         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;
677                 }
678                 else if(svs.perf_acc_realtime > 5)
679                 {
680                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
681                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
682                         if(svs.perf_acc_offset_samples > 0)
683                         {
684                                 svs.perf_offset_max = svs.perf_acc_offset_max;
685                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
686                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
687                         }
688                         if(svs.perf_lost > 0 && developer_extra.integer)
689                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
690                         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;
691                 }
692
693                 if (slowmo.value < 0.00001 && slowmo.value != 0)
694                         Cvar_SetValue("slowmo", 0);
695                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
696                         Cvar_SetValue("host_framerate", 0);
697
698                 // keep the random time dependent, but not when playing demos/benchmarking
699                 if(!*sv_random_seed.string && !cls.demoplayback)
700                         rand();
701
702                 cl.islocalgame = NetConn_IsLocalGame();
703
704                 // get new key events
705                 Key_EventQueue_Unblock();
706                 SndSys_SendKeyEvents();
707                 Sys_SendKeyEvents();
708
709                 NetConn_UpdateSockets();
710
711                 Log_DestBuffer_Flush();
712
713                 // receive packets on each main loop iteration, as the main loop may
714                 // be undersleeping due to select() detecting a new packet
715                 if (sv.active)
716                         NetConn_ServerFrame();
717
718                 Curl_Run();
719
720                 // check for commands typed to the host
721                 Host_GetConsoleCommands();
722
723                 // when a server is running we only execute console commands on server frames
724                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
725                 // otherwise we execute them on client frames
726                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
727                 {
728                         // process console commands
729 //                      R_TimeReport("preconsole");
730                         CL_VM_PreventInformationLeaks();
731                         Cbuf_Execute();
732 //                      R_TimeReport("console");
733                 }
734
735                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
736
737                 // if the accumulators haven't become positive yet, wait a while
738                 if (cls.state == ca_dedicated)
739                         wait = sv_timer * -1000000.0;
740                 else if (!sv.active)
741                         wait = cl_timer * -1000000.0;
742                 else
743                         wait = max(cl_timer, sv_timer) * -1000000.0;
744
745                 if (!cls.timedemo && wait >= 1)
746                 {
747                         double time0;
748
749                         if(host_maxwait.value <= 0)
750                                 wait = min(wait, 1000000.0);
751                         else
752                                 wait = min(wait, host_maxwait.value * 1000.0);
753                         if(wait < 1)
754                                 wait = 1; // because we cast to int
755
756                         time0 = Sys_DoubleTime();
757                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer)
758                                 NetConn_SleepMicroseconds((int)wait);
759                         else
760                                 Sys_Sleep((int)wait);
761                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
762 //                      R_TimeReport("sleep");
763                         continue;
764                 }
765
766                 R_TimeReport("---");
767
768         //-------------------
769         //
770         // server operations
771         //
772         //-------------------
773
774                 // limit the frametime steps to no more than 100ms each
775                 if (cl_timer > 0.1)
776                         cl_timer = 0.1;
777                 if (sv_timer > 0.1)
778                 {
779                         svs.perf_acc_lost += (sv_timer - 0.1);
780                         sv_timer = 0.1;
781                 }
782
783                 if (sv.active && sv_timer > 0)
784                 {
785                         // execute one or more server frames, with an upper limit on how much
786                         // execution time to spend on server frames to avoid freezing the game if
787                         // the server is overloaded, this execution time limit means the game will
788                         // slow down if the server is taking too long.
789                         int framecount, framelimit = 1;
790                         double advancetime, aborttime = 0;
791                         float offset;
792
793                         if (cls.state == ca_dedicated)
794                                 Collision_Cache_NewFrame();
795
796                         // run the world state
797                         // don't allow simulation to run too fast or too slow or logic glitches can occur
798
799                         // stop running server frames if the wall time reaches this value
800                         if (sys_ticrate.value <= 0)
801                                 advancetime = sv_timer;
802                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
803                         {
804                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
805                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
806                                 framelimit = 10;
807                                 aborttime = realtime + 0.1;
808                         }
809                         else
810                         {
811                                 advancetime = sys_ticrate.value;
812                                 // listen servers can run multiple server frames per client frame
813                                 if (cls.state == ca_connected)
814                                 {
815                                         framelimit = 10;
816                                         aborttime = realtime + 0.1;
817                                 }
818                         }
819                         if(slowmo.value > 0 && slowmo.value < 1)
820                                 advancetime = min(advancetime, 0.1 / slowmo.value);
821                         else
822                                 advancetime = min(advancetime, 0.1);
823
824                         if(advancetime > 0)
825                         {
826                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
827                                 ++svs.perf_acc_offset_samples;
828                                 svs.perf_acc_offset += offset;
829                                 svs.perf_acc_offset_squared += offset * offset;
830                                 if(svs.perf_acc_offset_max < offset)
831                                         svs.perf_acc_offset_max = offset;
832                         }
833
834                         // only advance time if not paused
835                         // the game also pauses in singleplayer when menu or console is used
836                         sv.frametime = advancetime * slowmo.value;
837                         if (host_framerate.value)
838                                 sv.frametime = host_framerate.value;
839                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))
840                                 sv.frametime = 0;
841
842                         // setup the VM frame
843                         SV_VM_Begin();
844
845                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
846                         {
847                                 sv_timer -= advancetime;
848
849                                 // move things around and think unless paused
850                                 if (sv.frametime)
851                                         SV_Physics();
852
853                                 // if this server frame took too long, break out of the loop
854                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
855                                         break;
856                         }
857                         R_TimeReport("serverphysics");
858
859                         // send all messages to the clients
860                         SV_SendClientMessages();
861                         
862                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
863                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
864                                 PRVM_ExecuteProgram(PRVM_serverfunction(SV_PausedTic), "QC function SV_PausedTic is missing");
865                         }
866
867                         // end the server VM frame
868                         SV_VM_End();
869
870                         // send an heartbeat if enough time has passed since the last one
871                         NetConn_Heartbeat(0);
872                         R_TimeReport("servernetwork");
873                 }
874                 else
875                 {
876                         // don't let r_speeds display jump around
877                         R_TimeReport("serverphysics");
878                         R_TimeReport("servernetwork");
879                 }
880
881         //-------------------
882         //
883         // client operations
884         //
885         //-------------------
886
887                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
888                 {
889                         R_TimeReport("---");
890                         Collision_Cache_NewFrame();
891                         R_TimeReport("collisioncache");
892                         // decide the simulation time
893                         if (cls.capturevideo.active)
894                         {
895                                 //***
896                                 if (cls.capturevideo.realtime)
897                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
898                                 else
899                                 {
900                                         clframetime = 1.0 / cls.capturevideo.framerate;
901                                         cl.realframetime = max(cl_timer, clframetime);
902                                 }
903                         }
904                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
905                         {
906                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
907                                 // when running slow, we need to sleep to keep input responsive
908                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
909                                 if (wait > 0)
910                                         Sys_Sleep((int)wait);
911                         }
912                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
913                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
914                         else
915                                 clframetime = cl.realframetime = cl_timer;
916
917                         // apply slowmo scaling
918                         clframetime *= cl.movevars_timescale;
919                         // scale playback speed of demos by slowmo cvar
920                         if (cls.demoplayback)
921                         {
922                                 clframetime *= slowmo.value;
923                                 // if demo playback is paused, don't advance time at all
924                                 if (cls.demopaused)
925                                         clframetime = 0;
926                         }
927
928                         // host_framerate overrides all else
929                         if (host_framerate.value)
930                                 clframetime = host_framerate.value;
931
932                         if (cl.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))
933                                 clframetime = 0;
934
935                         if (cls.timedemo)
936                                 clframetime = cl.realframetime = cl_timer;
937
938                         // deduct the frame time from the accumulator
939                         cl_timer -= cl.realframetime;
940
941                         cl.oldtime = cl.time;
942                         cl.time += clframetime;
943
944                         // update video
945                         if (host_speeds.integer)
946                                 time1 = Sys_DoubleTime();
947                         R_TimeReport("pre-input");
948
949                         // Collect input into cmd
950                         CL_Input();
951
952                         R_TimeReport("input");
953
954                         // check for new packets
955                         NetConn_ClientFrame();
956
957                         // read a new frame from a demo if needed
958                         CL_ReadDemoMessage();
959                         R_TimeReport("clientnetwork");
960
961                         // now that packets have been read, send input to server
962                         CL_SendMove();
963                         R_TimeReport("sendmove");
964
965                         // update client world (interpolate entities, create trails, etc)
966                         CL_UpdateWorld();
967                         R_TimeReport("lerpworld");
968
969                         CL_Video_Frame();
970                         CL_Gecko_Frame();
971
972                         R_TimeReport("client");
973
974                         CL_UpdateScreen();
975                         R_TimeReport("render");
976
977                         if (host_speeds.integer)
978                                 time2 = Sys_DoubleTime();
979
980                         // update audio
981                         if(cl.csqc_usecsqclistener)
982                         {
983                                 S_Update(&cl.csqc_listenermatrix);
984                                 cl.csqc_usecsqclistener = false;
985                         }
986                         else
987                                 S_Update(&r_refdef.view.matrix);
988
989                         CDAudio_Update();
990                         R_TimeReport("audio");
991
992                         // reset gathering of mouse input
993                         in_mouse_x = in_mouse_y = 0;
994
995                         if (host_speeds.integer)
996                         {
997                                 pass1 = (int)((time1 - time3)*1000000);
998                                 time3 = Sys_DoubleTime();
999                                 pass2 = (int)((time2 - time1)*1000000);
1000                                 pass3 = (int)((time3 - time2)*1000000);
1001                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
1002                                                         pass1+pass2+pass3, pass1, pass2, pass3);
1003                         }
1004                 }
1005
1006 #if MEMPARANOIA
1007                 Mem_CheckSentinelsGlobal();
1008 #else
1009                 if (developer_memorydebug.integer)
1010                         Mem_CheckSentinelsGlobal();
1011 #endif
1012
1013                 // if there is some time remaining from this frame, reset the timers
1014                 if (cl_timer >= 0)
1015                         cl_timer = 0;
1016                 if (sv_timer >= 0)
1017                 {
1018                         svs.perf_acc_lost += sv_timer;
1019                         sv_timer = 0;
1020                 }
1021
1022                 host_framecount++;
1023         }
1024 }
1025
1026 //============================================================================
1027
1028 qboolean vid_opened = false;
1029 void Host_StartVideo(void)
1030 {
1031         if (!vid_opened && cls.state != ca_dedicated)
1032         {
1033                 vid_opened = true;
1034                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
1035                 NetConn_UpdateSockets();
1036                 VID_Start();
1037                 CDAudio_Startup();
1038         }
1039 }
1040
1041 char engineversion[128];
1042
1043 qboolean sys_nostdout = false;
1044
1045 extern void u8_Init(void);
1046 extern void Render_Init(void);
1047 extern void Mathlib_Init(void);
1048 extern void FS_Init_SelfPack(void);
1049 extern void FS_Init(void);
1050 extern void FS_Shutdown(void);
1051 extern void PR_Cmd_Init(void);
1052 extern void COM_Init_Commands(void);
1053 extern void FS_Init_Commands(void);
1054 extern qboolean host_stuffcmdsrun;
1055
1056 /*
1057 ====================
1058 Host_Init
1059 ====================
1060 */
1061 static void Host_Init (void)
1062 {
1063         int i;
1064         const char* os;
1065
1066         if (COM_CheckParm("-profilegameonly"))
1067                 Sys_AllowProfiling(false);
1068
1069         // LordHavoc: quake never seeded the random number generator before... heh
1070         if (COM_CheckParm("-benchmark"))
1071                 srand(0); // predictable random sequence for -benchmark
1072         else
1073                 srand((unsigned int)time(NULL));
1074
1075         // FIXME: this is evil, but possibly temporary
1076         // LordHavoc: doesn't seem very temporary...
1077         // LordHavoc: made this a saved cvar
1078 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
1079         if (COM_CheckParm("-developer"))
1080         {
1081                 developer.value = developer.integer = 1;
1082                 developer.string = "1";
1083         }
1084
1085         if (COM_CheckParm("-developer2"))
1086         {
1087                 developer.value = developer.integer = 1;
1088                 developer.string = "1";
1089                 developer_extra.value = developer_extra.integer = 1;
1090                 developer_extra.string = "1";
1091                 developer_insane.value = developer_insane.integer = 1;
1092                 developer_insane.string = "1";
1093                 developer_memory.value = developer_memory.integer = 1;
1094                 developer_memory.string = "1";
1095                 developer_memorydebug.value = developer_memorydebug.integer = 1;
1096                 developer_memorydebug.string = "1";
1097         }
1098
1099 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1100         if (COM_CheckParm("-nostdout"))
1101                 sys_nostdout = 1;
1102
1103         // used by everything
1104         Memory_Init();
1105
1106         // initialize console command/cvar/alias/command execution systems
1107         Cmd_Init();
1108
1109         // initialize memory subsystem cvars/commands
1110         Memory_Init_Commands();
1111
1112         // initialize console and logging and its cvars/commands
1113         Con_Init();
1114
1115         // initialize various cvars that could not be initialized earlier
1116         u8_Init();
1117         Curl_Init_Commands();
1118         Cmd_Init_Commands();
1119         Sys_Init_Commands();
1120         COM_Init_Commands();
1121         FS_Init_Commands();
1122
1123         // initialize console window (only used by sys_win.c)
1124         Sys_InitConsole();
1125
1126         // initialize the self-pack (must be before COM_InitGameType as it may add command line options)
1127         FS_Init_SelfPack();
1128
1129         // detect gamemode from commandline options or executable name
1130         COM_InitGameType();
1131
1132         // construct a version string for the corner of the console
1133         os = DP_OS_NAME;
1134         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1135         Con_Printf("%s\n", engineversion);
1136
1137         // initialize ixtable
1138         Mathlib_Init();
1139
1140         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1141         FS_Init();
1142
1143         // must be after FS_Init
1144         Crypto_Init();
1145         Crypto_Init_Commands();
1146
1147         NetConn_Init();
1148         Curl_Init();
1149         //PR_Init();
1150         //PR_Cmd_Init();
1151         PRVM_Init();
1152         Mod_Init();
1153         World_Init();
1154         SV_Init();
1155         V_Init(); // some cvars needed by server player physics (cl_rollangle etc)
1156         Host_InitCommands();
1157         Host_InitLocal();
1158         Host_ServerOptions();
1159
1160         if (cls.state == ca_dedicated)
1161                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1162         else
1163         {
1164                 Con_DPrintf("Initializing client\n");
1165
1166                 R_Modules_Init();
1167                 Palette_Init();
1168                 MR_Init_Commands();
1169                 Thread_Init();
1170                 VID_Shared_Init();
1171                 VID_Init();
1172                 Render_Init();
1173                 S_Init();
1174                 CDAudio_Init();
1175                 Key_Init();
1176                 CL_Init();
1177         }
1178
1179         // save off current state of aliases, commands and cvars for later restore if FS_GameDir_f is called
1180         // NOTE: menu commands are freed by Cmd_RestoreInitState
1181         Cmd_SaveInitState();
1182
1183         // FIXME: put this into some neat design, but the menu should be allowed to crash
1184         // without crashing the whole game, so this should just be a short-time solution
1185
1186         // here comes the not so critical stuff
1187         if (setjmp(host_abortframe)) {
1188                 return;
1189         }
1190
1191         Host_AddConfigText();
1192         Cbuf_Execute();
1193
1194         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1195         if (!host_stuffcmdsrun)
1196         {
1197                 Cbuf_AddText("exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\nstuffcmds\n");
1198                 Cbuf_Execute();
1199         }
1200
1201         // put up the loading image so the user doesn't stare at a black screen...
1202         SCR_BeginLoadingPlaque();
1203
1204         if (cls.state != ca_dedicated)
1205         {
1206                 MR_Init();
1207         }
1208
1209         // check for special benchmark mode
1210 // 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)
1211         i = COM_CheckParm("-benchmark");
1212         if (i && i + 1 < com_argc)
1213         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1214         {
1215                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1216                 Cbuf_Execute();
1217         }
1218
1219         // check for special demo mode
1220 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1221         i = COM_CheckParm("-demo");
1222         if (i && i + 1 < com_argc)
1223         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1224         {
1225                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1226                 Cbuf_Execute();
1227         }
1228
1229 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1230         i = COM_CheckParm("-capturedemo");
1231         if (i && i + 1 < com_argc)
1232         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1233         {
1234                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1235                 Cbuf_Execute();
1236         }
1237
1238         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1239         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1240         {
1241                 Cbuf_AddText("startmap_dm\n");
1242                 Cbuf_Execute();
1243         }
1244
1245         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1246         {
1247                 Cbuf_AddText("togglemenu\n");
1248                 Cbuf_Execute();
1249         }
1250
1251         Con_DPrint("========Initialized=========\n");
1252
1253         //Host_StartVideo();
1254 }
1255
1256
1257 /*
1258 ===============
1259 Host_Shutdown
1260
1261 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1262 to run quit through here before the final handoff to the sys code.
1263 ===============
1264 */
1265 void Host_Shutdown(void)
1266 {
1267         static qboolean isdown = false;
1268
1269         if (isdown)
1270         {
1271                 Con_Print("recursive shutdown\n");
1272                 return;
1273         }
1274         if (setjmp(host_abortframe))
1275         {
1276                 Con_Print("aborted the quitting frame?!?\n");
1277                 return;
1278         }
1279         isdown = true;
1280
1281         // be quiet while shutting down
1282         S_StopAllSounds();
1283
1284         // disconnect client from server if active
1285         CL_Disconnect();
1286
1287         // shut down local server if active
1288         Host_ShutdownServer ();
1289
1290         // Shutdown menu
1291         if(MR_Shutdown)
1292                 MR_Shutdown();
1293
1294         // AK shutdown PRVM
1295         // AK hmm, no PRVM_Shutdown(); yet
1296
1297         CL_Gecko_Shutdown();
1298         CL_Video_Shutdown();
1299
1300         Host_SaveConfig();
1301
1302         CDAudio_Shutdown ();
1303         S_Terminate ();
1304         Curl_Shutdown ();
1305         NetConn_Shutdown ();
1306         //PR_Shutdown ();
1307
1308         if (cls.state != ca_dedicated)
1309         {
1310                 R_Modules_Shutdown();
1311                 VID_Shutdown();
1312                 Thread_Shutdown();
1313         }
1314
1315         Cmd_Shutdown();
1316         Key_Shutdown();
1317         CL_Shutdown();
1318         Sys_Shutdown();
1319         Log_Close();
1320         Crypto_Shutdown();
1321         FS_Shutdown();
1322         Con_Shutdown();
1323         Memory_Shutdown();
1324 }
1325