From bf629d259088e3f862a3d4238bdd49787150f78f Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@users.noreply.github.com>
Date: Sun, 17 Apr 2016 20:14:25 -0500
Subject: [PATCH] Use a range instead of strict equality when deciding head
 sounds

- See http://forum.zdoom.org/viewtopic.php?f=7&t=51583
---
 src/sound/fmodsound.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sound/fmodsound.cpp b/src/sound/fmodsound.cpp
index d1a4efd17..a62998d3d 100644
--- a/src/sound/fmodsound.cpp
+++ b/src/sound/fmodsound.cpp
@@ -2090,7 +2090,7 @@ FMOD_MODE FMODSoundRenderer::SetChanHeadSettings(SoundListener *listener, FMOD::
 		}
 		return oldmode;
 	}
-	else if (cpos == pos)
+	else if ((cpos - pos).LengthSquared() < (0.0004 * 0.0004))
 	{ // Head relative
 		return (oldmode & ~FMOD_3D) | FMOD_2D;
 	}