/// Updates the room effects of the environment with given |room| properties.
/// @note This should only be called from the main Unity thread.
public static void UpdateAudioRoom(FmodGvrAudioRoom room, bool roomEnabled)
{
// Update the enabled rooms list.
if (roomEnabled)
{
if (!enabledRooms.Contains(room))
{
enabledRooms.Add(room);
}
}
else
{
enabledRooms.Remove(room);
}
// Update the current room effects to be applied.
if (enabledRooms.Count > 0)
{
FmodGvrAudioRoom currentRoom = enabledRooms[enabledRooms.Count - 1];
RoomProperties roomProperties = GetRoomProperties(currentRoom);
// Pass the room properties into a pointer.
IntPtr roomPropertiesPtr = Marshal.AllocHGlobal(roomPropertiesSize);
Marshal.StructureToPtr(roomProperties, roomPropertiesPtr, false);
ListenerPlugin.setParameterData(roomPropertiesIndex, GetBytes(roomPropertiesPtr,
roomPropertiesSize));
Marshal.FreeHGlobal(roomPropertiesPtr);
}
else
{
// Set the room properties to a null room, which will effectively disable the room effects.
ListenerPlugin.setParameterData(roomPropertiesIndex, GetBytes(IntPtr.Zero, 0));
}
}
// Returns room properties of the given |room|.
private static RoomProperties GetRoomProperties(FmodGvrAudioRoom room)
{
RoomProperties roomProperties;
Vector3 position = room.transform.position;
Quaternion rotation = room.transform.rotation;
Vector3 scale = Vector3.Scale(room.transform.lossyScale, room.size);
ConvertAudioTransformFromUnity(ref position, ref rotation);
roomProperties.positionX = position.x;
roomProperties.positionY = position.y;
roomProperties.positionZ = position.z;
roomProperties.rotationX = rotation.x;
roomProperties.rotationY = rotation.y;
roomProperties.rotationZ = rotation.z;
roomProperties.rotationW = rotation.w;
roomProperties.dimensionsX = scale.x;
roomProperties.dimensionsY = scale.y;
roomProperties.dimensionsZ = scale.z;
roomProperties.materialLeft = room.leftWall;
roomProperties.materialRight = room.rightWall;
roomProperties.materialBottom = room.floor;
roomProperties.materialTop = room.ceiling;
roomProperties.materialFront = room.frontWall;
roomProperties.materialBack = room.backWall;
roomProperties.reverbGain = ConvertAmplitudeFromDb(room.reverbGainDb);
roomProperties.reverbTime = room.reverbTime;
roomProperties.reverbBrightness = room.reverbBrightness;
roomProperties.reflectionScalar = room.reflectivity;
return(roomProperties);
}
/// Returns whether the listener is currently inside the given |room| boundaries.
public static bool IsListenerInsideRoom(FmodGvrAudioRoom room)
{
// Compute the room position relative to the listener.
FMOD.VECTOR unused;
RuntimeManager.LowlevelSystem.get3DListenerAttributes(0, out listenerPositionFmod, out unused,
out unused, out unused);
Vector3 listenerPosition = new Vector3(listenerPositionFmod.x, listenerPositionFmod.y,
listenerPositionFmod.z);
Vector3 relativePosition = listenerPosition - room.transform.position;
Quaternion rotationInverse = Quaternion.Inverse(room.transform.rotation);
// Set the size of the room as the boundary and return whether the listener is inside.
bounds.size = Vector3.Scale(room.transform.lossyScale, room.size);
return(bounds.Contains(rotationInverse * relativePosition));
}