Simple wrapper around Audio Services

Sound.h

/*
    - Trivial wrapper around system sound as provided by Audio Services.
    - Don’t forget to link against the Audio Toolbox framework.
    - Assumes ARC support.
*/

@interface Sound : NSObject

// Path is relative to the resources dir.
- (id) initWithPath: (NSString*) path;
- (void) play;

@end

Sound.m

#import "Sound.h"
#import <AudioToolbox/AudioToolbox.h>

@implementation Sound {
    SystemSoundID handle;
}

- (id) initWithPath: (NSString*) path
{
    self = [super init];
    NSString *const resourceDir = [[NSBundle mainBundle] resourcePath];
    NSString *const fullPath = [resourceDir stringByAppendingPathComponent:path];
    NSURL *const url = [NSURL fileURLWithPath:fullPath];
    OSStatus errcode = AudioServicesCreateSystemSoundID((CFURLRef) url, &handle);
    NSAssert1(errcode == 0, @"Failed to load sound: %@", path);
    return self;
}

- (void) dealloc
{
    AudioServicesDisposeSystemSoundID(handle);
}

- (void) play
{
    AudioServicesPlaySystemSound(handle);
}

@end

Thanks, I missed that. I’ve added the missing #import to the code along with some minor tweaks for ARC.