SDL Sound Help Please

[toomanystars]

Hi guys,

I am working on a 2D side scroller game and came upon a sound issue. I would like to be able to play multiple sounds simultaneously but am unable to do so. Currently, I am using:

Mix_PlayChannel(-1,bat_sound,0);

to call sound effects. I have seen some talk about "threads," but I don't know anything about them at this point.

Is there some simple, elegant way to do it?

Thanks,

Mike

[Peter87]

You should be able to play multiple sounds at the same time by calling Mix_PlayChannel multiple times. That should work for up to 8 sounds at the same time. If you need to be able to play more sounds at the same time you can use Mix_AllocateChannels to increase the number.
http://www.libsdl.org/projects/SDL_mixer/docs/SDL_mixer.html#SEC26

[toomanystars]

Hi Peter,

I have tried called Mix_PlayChannel multiple times, but it only appears to play the latest instance.

Mike

[Peter87]

Did you pass 0 as the third argument each time?

[toomanystars]

Yes I did, and just tried it again. For example, my character shoots lances which makes a sound, and then I have enemies running around with sound being looped in the move function. After a compile and run, only the enemies sound is playing, while my shooting is not doing anything. It's a bit strange.

Mike

[Peter87]

Make sure that your shooting sound is loaded correctly.

Mix_Chunk* shooting_sound = Mix_LoadWAV("shot.wav");
if (shooting_sound == NULL)
{
	std::cout << Mix_GetError() << std::endl;
}