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Assets/SteamVR/Scripts/SteamVR_Ears.cs

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+//======= Copyright (c) Valve Corporation, All rights reserved. ===============
+//
+// Purpose: Handles aligning audio listener when using speakers.
+//
+//=============================================================================
+
+using UnityEngine;
+using Valve.VR;
+
+namespace Valve.VR
+{
+    [RequireComponent(typeof(AudioListener))]
+    public class SteamVR_Ears : MonoBehaviour
+    {
+        public SteamVR_Camera vrcam;
+
+        bool usingSpeakers;
+        Quaternion offset;
+
+        private void OnNewPosesApplied()
+        {
+            var origin = vrcam.origin;
+            var baseRotation = origin != null ? origin.rotation : Quaternion.identity;
+            transform.rotation = baseRotation * offset;
+        }
+
+        void OnEnable()
+        {
+            usingSpeakers = false;
+
+            var settings = OpenVR.Settings;
+            if (settings != null)
+            {
+                var error = EVRSettingsError.None;
+                if (settings.GetBool(OpenVR.k_pch_SteamVR_Section, OpenVR.k_pch_SteamVR_UsingSpeakers_Bool, ref error))
+                {
+                    usingSpeakers = true;
+
+                    var yawOffset = settings.GetFloat(OpenVR.k_pch_SteamVR_Section, OpenVR.k_pch_SteamVR_SpeakersForwardYawOffsetDegrees_Float, ref error);
+                    offset = Quaternion.Euler(0.0f, yawOffset, 0.0f);
+                }
+            }
+
+            if (usingSpeakers)
+                SteamVR_Events.NewPosesApplied.Listen(OnNewPosesApplied);
+        }
+
+        void OnDisable()
+        {
+            if (usingSpeakers)
+                SteamVR_Events.NewPosesApplied.Remove(OnNewPosesApplied);
+        }
+    }
+}