From 1f133ea702a094c9ad107be65856fa9835bc8810 Mon Sep 17 00:00:00 2001
From: SNMetamorph <25657591+SNMetamorph@users.noreply.github.com>
Date: Mon, 9 Mar 2026 22:41:55 +0400
Subject: [PATCH] engine: client: add steam broker messages for game init &
 shutdown events

---
 engine/client/cl_main.c  |  2 +-
 engine/client/cl_steam.c | 49 ++++++++++++++++++++++++++++++++++++----
 engine/client/client.h   |  2 ++
 3 files changed, 48 insertions(+), 5 deletions(-)

diff --git a/engine/client/cl_main.c b/engine/client/cl_main.c
index 2220cfc4..b72447f5 100644
--- a/engine/client/cl_main.c
+++ b/engine/client/cl_main.c
@@ -94,7 +94,7 @@ static CVAR_DEFINE_AUTO( topcolor, "0", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTE
 static CVAR_DEFINE_AUTO( bottomcolor, "0", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTERABLE, "player bottom color" );
 CVAR_DEFINE_AUTO( rate, "25000", FCVAR_USERINFO|FCVAR_ARCHIVE|FCVAR_FILTERABLE, "player network rate" );
 
-static CVAR_DEFINE_AUTO( cl_ticket_generator, "revemu2013", FCVAR_ARCHIVE, "you wouldn't steal a car" );
+CVAR_DEFINE_AUTO( cl_ticket_generator, "revemu2013", FCVAR_ARCHIVE, "you wouldn't steal a car" );
 static CVAR_DEFINE_AUTO( cl_advertise_engine_in_name, "1", FCVAR_ARCHIVE|FCVAR_PRIVILEGED, "add [Xash3D] to the nickname when connecting to GoldSrc servers" );
 static CVAR_DEFINE_AUTO( cl_log_outofband, "0", FCVAR_ARCHIVE, "log out of band messages, can be useful for server admins and for engine debugging" );
 static CVAR_DEFINE_AUTO( cl_autorecord, "0", 0, "automatically start recording a demo after joining the server" );
diff --git a/engine/client/cl_steam.c b/engine/client/cl_steam.c
index 5cf8d624..398e5391 100644
--- a/engine/client/cl_steam.c
+++ b/engine/client/cl_steam.c
@@ -41,15 +41,22 @@ static struct
 	netadr_t serveradr;
 } broker;
 
-qboolean SteamBroker_InitiateGameConnection( netadr_t serveradr, int challenge )
+static qboolean SteamBroker_UpdateBrokerAddress( void )
 {
 	if( NET_NetadrType( &broker.adr ) == NA_UNDEFINED )
 	{
 		if( !NET_StringToAdr( cl_steam_broker_addr.string, &broker.adr ))
-		{
-			Con_Printf( "%s: NET_StringToAdr( %s ) failed\n", __func__, cl_steam_broker_addr.string );
 			return false;
-		}
+	}
+	return true;
+}
+
+qboolean SteamBroker_InitiateGameConnection( netadr_t serveradr, int challenge )
+{
+	if( !SteamBroker_UpdateBrokerAddress( ))
+	{
+		Con_Printf( "%s: failed to resolve broker address \"%s\"\n", __func__, cl_steam_broker_addr.string );
+		return false;
 	}
 
 	// only ipv4 supported
@@ -88,6 +95,39 @@ void SteamBroker_TerminateGameConnection( void )
 	NET_NetadrSetType( &broker.adr, NA_UNDEFINED );
 }
 
+void SteamBroker_AnnounceGameStart( const char *gamedir )
+{
+	if( Q_stricmp( cl_ticket_generator.string, "steam" ) != 0 )
+		return;
+
+	if( !SteamBroker_UpdateBrokerAddress( ))
+	{
+		Con_Printf( "%s: failed to resolve broker address \"%s\"\n", __func__, cl_steam_broker_addr.string );
+		return;
+	}
+
+	NET_Config( true, true ); // initialize sockets to be able to send packets to broker
+
+	char buf[512];
+	int len = Q_snprintf( buf, sizeof( buf ), "sb_gamedir %s", gamedir );
+
+	NET_SendPacket( NS_CLIENT, len, buf, broker.adr );
+}
+
+void SteamBroker_AnnounceGameShutdown( void )
+{
+	if( Q_stricmp( cl_ticket_generator.string, "steam" ) != 0 )
+		return;
+
+	if( !SteamBroker_UpdateBrokerAddress( ))
+	{
+		Con_Printf( "%s: failed to resolve broker address \"%s\"\n", __func__, cl_steam_broker_addr.string );
+		return;
+	}
+
+	NET_SendPacket( NS_CLIENT, sizeof( "sb_terminate" ) - 1, "sb_terminate", broker.adr );
+}
+
 void SteamBroker_HandlePacket( netadr_t from, sizebuf_t *msg )
 {
 	// message format
@@ -127,4 +167,5 @@ void SteamBroker_Init( void )
 
 void SteamBroker_Shutdown( void )
 {
+	SteamBroker_AnnounceGameShutdown();
 }
diff --git a/engine/client/client.h b/engine/client/client.h
index 0e3e8578..45a56f02 100644
--- a/engine/client/client.h
+++ b/engine/client/client.h
@@ -723,6 +723,7 @@ extern convar_t	scr_loading;
 extern convar_t	v_dark;	// start from dark
 extern convar_t	net_graph;
 extern convar_t	rate;
+extern convar_t cl_ticket_generator;
 extern convar_t	m_ignore;
 extern convar_t	r_showtree;
 extern convar_t	ui_renderworld;
@@ -1214,6 +1215,7 @@ void CL_GetSecuredClientAPI( CL_EXPORT_FUNCS F );
 //
 void SteamBroker_Init( void );
 void SteamBroker_Shutdown( void );
+void SteamBroker_AnnounceGameStart( const char *gamedir );
 void SteamBroker_HandlePacket( netadr_t from, sizebuf_t *msg );
 int SteamBroker_InitiateGameConnection( netadr_t serveradr, int challenge );
 void SteamBroker_TerminateGameConnection( void );