From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Fri, 30 Mar 2007 08:48:11 +0000 (+0000)
Subject: make timedemo and -benchmark use srand(0) to get more predictable results
X-Git-Tag: xonotic-v0.1.0preview~3388
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=b290a6cace16fb813438af50629fb7876862294e;p=xonotic%2Fdarkplaces.git

make timedemo and -benchmark use srand(0) to get more predictable results


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@7030 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/cl_demo.c b/cl_demo.c
index 5539c70c..ce5f95d7 100644
--- a/cl_demo.c
+++ b/cl_demo.c
@@ -421,6 +421,8 @@ void CL_TimeDemo_f (void)
 		return;
 	}
 
+	srand(0); // predictable random sequence for benchmarking
+
 	CL_PlayDemo_f ();
 
 // cls.td_starttime will be grabbed at the second frame of the demo, so
diff --git a/host.c b/host.c
index aea36ef3..13cd0591 100644
--- a/host.c
+++ b/host.c
@@ -613,8 +613,8 @@ void Host_Main(void)
 		if (cl_maxfps.value < 1)
 			Cvar_SetValue("cl_maxfps", 1);
 
-		// keep the random time dependent
-		if(!*sv_random_seed.string)
+		// keep the random time dependent, but not when playing demos/benchmarking
+		if(!*sv_random_seed.string && !cls.demoplayback)
 			rand();
 
 		cl.islocalgame = NetConn_IsLocalGame();
@@ -888,7 +888,10 @@ static void Host_Init (void)
 	const char* os;
 
 	// LordHavoc: quake never seeded the random number generator before... heh
-	srand(time(NULL));
+	if (COM_CheckParm("-benchmark"))
+		srand(0); // predictable random sequence for -benchmark
+	else
+		srand(time(NULL));
 
 	// FIXME: this is evil, but possibly temporary
 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)