Thanks or noticing.
I think it'd be better if you followed the usual conversion, which is doing something like

void someFunc()
{
#if !CONFIG2_AUDIO
UNUSED2(argument)...
#else
[regular function body]
#end
}

That way you wouldn't have to change the header

One could also wrap the constants in a macro?

In D3631#158758, @wraitii wrote:

I think it'd be better if you followed the usual conversion, which is doing something like

void someFunc()

Yes. It's a good idea. But CSoundGroup::RadiansOffCenter return float.
I have no idea as make dummy method with return statement

In D3631#158807, @nwtour wrote:

Yes. It's a good idea. But CSoundGroup::RadiansOffCenter return float.
I have no idea as make dummy method with return statement

just return 0.f, I think it's acceptable given that's a 'sane' value to return even if it were called by mistake.

In D3631#158810, @wraitii wrote:

just return 0.f, I think it's acceptable given that's a 'sane' value to return even if it were called by mistake.

Okay, changed. Only this is your idea, I would not do such strange things ;-)

In D3631#158768, @Stan wrote:

One could also wrap the constants in a macro?

IMHO It doesn't fit the principle KISS (kiss keep it simple, stupid).
While RadiansOffCenter() is used only internally CSoundGroup , it is not worth complicating logic

Fair enough, looks good to me.