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Pause demo playback when no spectators are watching

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svdemo_pauseEmpty (default: 1) pauses frame processing when no
client is CS_ACTIVE during demo playback. Prevents the demo from
advancing with nobody watching. Time residual is cleared so the
demo resumes from where it paused when a spectator connects.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
serge_shubin 2026-03-23 06:25:16 +08:00
parent b79eb77bb3
commit 300e7c431a
4 changed files with 28 additions and 0 deletions
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1
code/server/server.h
View file

@ -357,6 +357,7 @@ void SVD_Stop_f( void );
qboolean SVD_PlaybackFrame( void );
qboolean SVD_IsRecording( void );
qboolean SVD_IsPlaying( void );
qboolean SVD_ShouldPause( void );
//============================================================
//

1
code/server/sv_init.c
View file

@ -624,6 +624,7 @@ void SV_Init (void) {
// server-side demo settings
Cvar_Get ("svdemo_autorecord", "0", CVAR_ARCHIVE);
Cvar_Get ("svdemo_compress", "1", CVAR_ARCHIVE);
Cvar_Get ("svdemo_pauseEmpty", "1", CVAR_ARCHIVE);
// initialize bot cvars so they are listed and can be set before loading the botlib
SV_BotInitCvars();

6
code/server/sv_main.c
View file

@ -828,6 +828,12 @@ void SV_Frame( int msec ) {
if (com_dedicated->integer) SV_BotFrame( svs.time );
// demo playback: pause if no spectators are watching
if ( SVD_IsPlaying() && SVD_ShouldPause() ) {
sv.timeResidual = 0;
return;
}
// run the game simulation in chunks
while ( sv.timeResidual >= frameMsec ) {
sv.timeResidual -= frameMsec;

20
code/server/sv_netdemo.c
View file

@ -1017,3 +1017,23 @@ qboolean SVD_IsPlaying( void ) {
return demo.playing;
}
/*
Returns qtrue if demo playback should pause (no active spectators).
Controlled by svdemo_pauseEmpty cvar.
*/
qboolean SVD_ShouldPause( void ) {
int i;
if ( !Cvar_VariableIntegerValue( "svdemo_pauseEmpty" ) ) {
return qfalse;
}
for ( i = 0; i < sv_maxclients->integer; i++ ) {
if ( svs.clients[i].state == CS_ACTIVE ) {
return qfalse; // someone is watching
}
}
return qtrue; // nobody connected, pause
}