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using System;
using System.Collections.Generic;
namespace Microsoft.Xna.Framework.Media
{
public sealed class MediaQueue
{
List<Song> songs = new List<Song>();
private int _activeSongIndex = 0;
private Random random = new Random();
public MediaQueue()
{
}
public Song ActiveSong
{
get
{
if (songs.Count == 0)
return null;
return songs[_activeSongIndex];
}
}
public int ActiveSongIndex
{
get { return _activeSongIndex; }
set { _activeSongIndex = value; }
}
internal int Count
{
get
{
return songs.Count;
}
}
internal IEnumerable<Song> Songs
{
get
{
return songs;
}
}
internal Song GetNextSong(int direction, bool shuffle)
{
if (shuffle)
_activeSongIndex = random.Next(songs.Count);
else
_activeSongIndex = (int)MathHelper.Clamp(_activeSongIndex + direction, 0, songs.Count - 1);
return songs[_activeSongIndex];
}
internal void Clear()
{
Song song;
for(; songs.Count > 0; )
{
song = songs[0];
song.Stop();
songs.Remove(song);
}
}
internal void SetVolume(float volume)
{
int count = songs.Count;
for (int i = 0; i < count; ++i)
songs[i].Volume = volume;
}
internal void Add(Song song)
{
songs.Add(song);
}
internal void Stop()
{
int count = songs.Count;
for (int i = 0; i < count; ++i)
songs[i].Stop();
}
}
}
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