Friday, January 25, 2013

Playing Music from iOS Music Playlist with Unity3D


With this simple coding you can play a playlist on your device from your Unity3D Game. Why license royalties when you can get the user to do it for you per individual basis.  I am using this in my game Snowboarding+ (see gameplay demo above). If there is no music on your device it'll finally play the local music in your Unity 3D app. This plays the playlist called Snowboarding+

in AppController.mm (also add MediaPlayer.framework):

#include <MediaPlayer/MediaPlayer.h>


- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions
{
[self playMusic];
}


- (void) playMusic {
  // Instantiate a music player
    MPMusicPlayerController *appPlayer = [MPMusicPlayerController applicationMusicPlayer];
    
    // Shuffle all songs
    [appPlayer setShuffleMode:MPMusicShuffleModeSongs];
    
    // Assume we will not find our playlist
    BOOL playlistFound = NO;
    
    // Get a collection of all playlists on the device
    MPMediaQuery *playlistsQuery = [MPMediaQuery playlistsQuery];
    NSArray *playlists = [playlistsQuery collections];
    NSString *plus;
    plus = @"all";
    // Check each playlist to see if it is the right one
    for (MPMediaPlaylist *playlist in playlists) {
        NSString *playlistName = [playlist valueForProperty: MPMediaPlaylistPropertyName];
        if ([playlistName isEqualToString:@"Snowboarding+"]) {
            // Add the playlist to the player's queue and get out of here
            [appPlayer setQueueWithItemCollection:playlist];
            playlistFound = YES;
            plus = @"snowboarding+";
            break;
        }
    }
    
    // If no playlist found, just play All playlist
    if (!playlistFound) {
        for (MPMediaPlaylist *playlist in playlists) {
            NSString *playlistName = [playlist valueForProperty: MPMediaPlaylistPropertyName];
            if ([playlistName isEqualToString:@"All"]) {
                // Add the playlist to the player's queue and get out of here
                [appPlayer setQueueWithItemCollection:playlist];
                playlistFound = YES;
                plus = @"all";
                break;
            }
            else
            {
                //IF NO ALL play a random song
                [appPlayer setQueueWithQuery: [MPMediaQuery songsQuery]];
                plus = @"random";
            }
        }

    }
    
    // Start playing from the beginning of the queue
    [appPlayer play];
    
    if (appPlayer.playbackState == MPMusicPlaybackStatePlaying)
{                
UnitySendMessage("Camera", "isPlaying","TRUE");
NSLog(@"%@ is playing",plus);}
            else
{
                UnitySendMessage("Camera", "isPlaying","FALSE");
NSLog(@"internal music from Unity3D App is playing");}

}
}

In Unity 3D add the following to the Script on your Camera or any game object from above:

var isMusicPlaying: boolean = false;

@script RequireComponent(AudioSource)

function Start() {
    // Delay a clip by 10 sec (44100 samples)
  #if UNITY_EDITOR || UNITY_ANDROID || UNITY_OSX
      audio.Play(44100 * 5);     
   #endif

}

function isPlaying(message:String)
 {
  if (message == "TRUE") {isMusicPlaying = true; audio.Stop(); }
  if (message == "FALSE") {isMusicPlaying = false;  audio.Play();  }

  Debug.Log("Is the Music Playing from Device? " + message);
 }

No comments:

Post a Comment