Sound Volume from Instanced Source Objects?

[Caiman]

Hi all,

I'm dealing with an interesting dilemma in my game project. What I want to do is adjust the volume of a sound according to the distance from the player to the source. The trick is that the source is a duplicated (instanced) object.

What I have so far: The object that's closest to the player is flagged and calculates the distance to the player and has the preferred volume as an Alterable value.

What's the problem?: Assigning the volume data to the "Set Sample Volume" event using the correct source object. At the moment it's picking a source object at random and assigning the alterable value info from that as the sample volume.

Any help on this is greatly appreciated.
Thanks.

[stuckboy]

So your trying to make a positional audio system in MMF2. Until MMF2's sound system is upgraded somewhat, this is very awkward and probably not worth it.

For example, there is no way to get the number of the last sound channel played on. So right off the bat you are going to have to design a sample/channel distribution which will be fairly complicated and also require a fair bit of looping, which could cause slowdown in your game.

Every time you play a sound, you'd need to put a piece of code next to it that set the volume/panning of the appropriate channel. If you wanted looping sounds that move with the source then you'd need to find a way of constantly updating the volume/pan of the channel.

There used to be an extension for MMF1.5 called DirectSound 2 that could do all this and more, but the developer mysteriously lost the source code and so MMF2 has suffered as a result. I've heard a few rumours that someone is working on a new positional sound object, so I'd just hang on until then.