From 6c31780ccad14a4dd97e8dfc5cc60b5726a7913e Mon Sep 17 00:00:00 2001
From: mittorn <mittorn@sibmail.com>
Date: Wed, 8 Aug 2018 02:33:48 +0700
Subject: [PATCH] Add option to controls decals on server

---
 dlls/gravgunmod.cpp |  5 +++++
 dlls/gravgunmod.h   | 13 +++++++++++++
 dlls/util.cpp       |  9 +++++++++
 3 files changed, 27 insertions(+)

diff --git a/dlls/gravgunmod.cpp b/dlls/gravgunmod.cpp
index a4c0243f..55c911b6 100644
--- a/dlls/gravgunmod.cpp
+++ b/dlls/gravgunmod.cpp
@@ -31,6 +31,7 @@ cvar_t mp_maxotherdist = { "mp_maxotherdist", "4096", FCVAR_SERVER};
 cvar_t mp_maxmonsterdist = { "mp_maxmonsterdist", "4096", FCVAR_SERVER};
 cvar_t mp_servercliptents = { "mp_servercliptents", "0", FCVAR_SERVER};
 cvar_t mp_maxtentdist = { "mp_maxtentdist", "4096", FCVAR_SERVER};
+cvar_t mp_maxdecals = { "mp_maxdecals", "-1", FCVAR_SERVER };
 
 void Ent_RunGC_f( void );
 
@@ -107,6 +108,7 @@ void GGM_RegisterCVars( void )
 	CVAR_REGISTER( &mp_maxotherdist );
 	CVAR_REGISTER( &mp_servercliptents );
 	CVAR_REGISTER( &mp_maxtentdist );
+	CVAR_REGISTER( &mp_maxdecals );
 
 	g_engfuncs.pfnAddServerCommand( "ent_rungc", Ent_RunGC_f );
 }
@@ -751,6 +753,9 @@ void GGM_InitialMenus( CBasePlayer *pPlayer )
 				.Add("Join coop", "joincoop")
 				.Add("Spectate", "spectate")
 				.Show();
+
+	if( mp_maxdecals.value >= 0 )
+		CLIENT_COMMAND( pPlayer->edict(), UTIL_VarArgs("r_decals %f\n", mp_maxdecals.value ) );
 }
 
 bool GGM_TouchCommand( CBasePlayer *pPlayer, const char *pcmd )
diff --git a/dlls/gravgunmod.h b/dlls/gravgunmod.h
index 3dd1d8ac..beaf980c 100644
--- a/dlls/gravgunmod.h
+++ b/dlls/gravgunmod.h
@@ -20,15 +20,28 @@ extern cvar_t mp_checkentities;
 extern cvar_t mp_touchmenu;
 
 // distance clipping (client.cpp)
+// useful for open world
 extern cvar_t mp_serverdistclip;
 extern cvar_t mp_maxbmodeldist;
 extern cvar_t mp_maxtrashdist;
 extern cvar_t mp_maxwaterdist;
 extern cvar_t mp_maxmonsterdist;
 extern cvar_t mp_maxotherdist;
+
+// tempentity clipping
+// if enabled, ignores PVS, so use only on open world
 extern cvar_t mp_servercliptents;
 extern cvar_t mp_maxtentdist;
 
+// control decals count from server
+// decals is unuseful on sandbox servers
+// 100 instancs of single bmodel with 100 decals
+// will cause in 10000 decals in frame
+// r_decals limit does not cover it because it
+// only limit decal count on different models
+
+extern cvar_t mp_maxdecals;
+
 void GGM_RegisterCVars( void );
 void Ent_RunGC( bool common, bool enttools, const char *userid, const char *pattern = NULL );
 bool Q_stricmpext( const char *pattern, const char *text );
diff --git a/dlls/util.cpp b/dlls/util.cpp
index 68ea0865..60567a5d 100644
--- a/dlls/util.cpp
+++ b/dlls/util.cpp
@@ -1251,6 +1251,9 @@ void UTIL_DecalTrace( TraceResult *pTrace, int decalNumber )
 	if( decalNumber < 0 )
 		return;
 
+	if( !mp_maxdecals.value ) // even do not send if decals disabled
+		return;
+
 	index = gDecals[decalNumber].index;
 
 	if( index < 0 )
@@ -1363,6 +1366,9 @@ void UTIL_PlayerDecalTrace( TraceResult *pTrace, int playernum, int decalNumber,
 	if( pTrace->flFraction == 1.0 )
 		return;
 
+	if( !mp_maxdecals.value ) // even do not send if decals disabled
+		return;
+
 	if( mp_serverdistclip.value && mp_servercliptents.value )
 	{
 		// loop through all players
@@ -1411,6 +1417,9 @@ void UTIL_PlayerDecalTrace( TraceResult *pTrace, int playernum, int decalNumber,
 
 void UTIL_GunshotDecalTrace( TraceResult *pTrace, int decalNumber )
 {
+	if( !mp_maxdecals.value ) // even do not send if decals disabled
+		return;
+
 	if( decalNumber < 0 )
 		return;