From 13b36e66b351138a59b2135bed803fa6d7f00a62 Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Fri, 25 Feb 2022 02:12:44 +0300
Subject: [PATCH] engine: client: workaround buggy position history times going
 backwards in interpolation code

---
 engine/client/cl_frame.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/engine/client/cl_frame.c b/engine/client/cl_frame.c
index f0ab2d2b..a9181ffb 100644
--- a/engine/client/cl_frame.c
+++ b/engine/client/cl_frame.c
@@ -486,7 +486,9 @@ int CL_InterpolateModel( cl_entity_t *e )
 		return 0;
 	}
 
-	if( Q_equal( t2, t1 ))
+	// HACKHACK: workaround buggy position history animtime
+	// going backward sometimes
+	if( Q_equal( t2, t1 ) || t2 < t1 )
 	{
 		VectorCopy( ph0->origin, e->origin );
 		VectorCopy( ph0->angles, e->angles );