Classes/oalTouchAppDelegate.m

/*
 
    File: oalTouchAppDelegate.m
Abstract: App delegate. Ties everything together, and handles some high-level UI input.
 Version: 1.9
 
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*/
 
#import "oalTouchAppDelegate.h"
 
#import "oalPlayback.h"
 
@implementation oalTouchAppDelegate
 
@synthesize window;
@synthesize view;
@synthesize playback;
 
- (void)applicationDidFinishLaunching:(UIApplication *)application
{   
    // Get accelerometer updates at 15 hz
    [[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / 15.)];
}
 
 
- (void)dealloc
{
    [playback release];
    [view release];
    [window release];
    [super dealloc];
}
 
 
- (IBAction)playPause:(UIButton *)sender
{
    // Toggle the playback
    
    if (playback.isPlaying) [playback stopSound];
    else [playback startSound];
    sender.selected = playback.isPlaying;
}
 
- (IBAction)toggleAccelerometer:(UISwitch *)sender
{
    // Toggle the accelerometer
    // Note: With the accelerometer on, the device should be held vertically, not laid down flat.
    // As the device is rotated, the orientation of the listener will adjust so as as to be looking upward.
    if (sender.on)
    {
        [[UIAccelerometer sharedAccelerometer] setDelegate:self];
    } else {
        [[UIAccelerometer sharedAccelerometer] setDelegate:nil];
    }
}
 
- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration
{
    CGFloat zRot;
    
    // Find out the Z rotation of the device by doing some trig on the accelerometer values for X and Y
    zRot = (atan2(acceleration.x, acceleration.y) + M_PI);
    
    // Set our listener's rotation
    playback.listenerRotation = zRot;
}
 
@end