(Also, just a suggestion, it would be helpful to include in your downloadable package the support files the SoundManager references (OpenAL support and Singleton synthesis) for people who just want the Sound Manager stuff, especially since there are more than one similarly-named OpenAL support files floating around.)

Thanks again for sharing your work. I wouldn’t be as far along as I am without it.

@Anyone who knows trigrometery well

With my Render Manager complete i have been working on a custom rotate function with some google research i found this

NewX = x*cos(angle) - y*sin(angle)
NewY = x*sin(angle) + y*cos(angle)

x = NewX
y = NewY

i have tried this with my own version however it doesent seem to work

basically when it draws a triangle appears at (0, 240) and some coordinates are negative

here is the code

float verts[8] = {vertices[0].tl_x, vertices[0].tl_y, vertices[0].tr_x, vertices[0].tr_y, vertices[0].bl_x, vertices[0].bl_y, vertices[0].br_x, vertices[0].br_y};
float destination[8];
destination[0] = verts[0]*cos(45) - verts[1]*sin(45);
destination[1] = verts[0]*sin(45) + verts[1]*cos(45);
destination[2] = verts[2]*cos(45) - verts[3]*sin(45);
destination[3] = verts[2]*sin(45) + verts[3]*cos(45);
destination[4] = verts[4];
destination[5] = verts[5];
destination[6] = verts[6]*cos(45) - verts[7]*sin(45);
destination[7] = verts[6]*sin(45) + verts[7]*cos(45);

I know it is inefficent right now but i’ll fix that later this is just a test

I also know mike has a custom opengl stack thing but i don’t want to figure out how to change it to except Quad2*

everything works fine when I use -1 but if I try assigning a source id I don’t get any sound.

if(_player.moving == YES){
	[_sharedSoundManager playSoundWithKey:@"Walking" gain:2.0f pitch:1.0f location:Vector2fMake(_player.tileX * 50, _player.tileY * 50) shouldLoop:NO sourceID:5];
}

is there something else I have to do to assign a sourceID?

If you want to take a screen shot of instruments showing the leaks and email them to me or if there is code you can share I’ll take a look.

Mike

Thanks for the info.

Mike

glDeleteBuffers(1, &bufferID);

I think that should be:

alDeleteBuffers(1, &bufferID);

Regarding the memory leak, I just created a clean project and added the SoundManager class to it. By merely calling:

SoundManager *sm = [SoundManager sharedSoundManager];

…without loading or playing any sounds, I get two memory leaks.

Both are apparently leaked when we call alcMakeContextCurrent in initOpenAL. I don’t see anything wrong with that, but then, I am completely new to OpenAL.

If I then try to load a sound, I end up with 10 *more* leaks.

Anyway, enough about that, I’ll take a look in instruments when I get home later to see if I am getting any leaks as well.

What size/length of sounds are you using in OpenAL and for music. I’m only loading up a few small wav files at the moment which could be why I am not seeing any leaks. I’m also not releasing any sounds at the moment either.

Let me know what you are doing and I’ll check it out my end.

Mike

What about the memory leak I mentioned? Do you see it, too?

You know, I’ve been learning Objective-C, Cocoa, and the iPhone SDK for a good couple of months now, and everything has come together swimmingly for me, with the sole exception of audio (so far, knock on wood). It seems like no matter what I try, I run into problems, either unacceptable latency or memory leaks or restrictions on length of audio.

So, I appreciate you putting up your work and sharing it. I think if we can squash this memory leak, I’ll have a final, workable solution. Thanks.

Yes, the difference is for compressed sound, so it only applies to the music, not OpenAL. However changing to the hardware decoding for music made quite a difference to performance for me when playing music.

The approach I’ve adopted is to check at startup whether or not the ipod is currently playing audio – if it isn’t, I use AmbientSound and set a music mute flag, so that the user’s ipod music continues to play. If the user then unmutes the music in the game menu, the category is changed to SoloAmbientSound and the ipod music stops.
If not, I use SoloAmbientSound and my game’s music plays from the start.