www.pudn.com > IntroductionTo3DGameEngineDesign.rar > jukebox.cs

using System; 
using System.Drawing; 
using System.Collections; 
using Microsoft.DirectX; 
using Microsoft.DirectX.AudioVideoPlayback; 
 
namespace GameEngine 
{ 
	/// 
 
	/// Summary description for Jukebox. 
	/// 
 
	public class Jukebox : IDisposable 
	{ 
		#region Attributes 
		private ArrayList  playlist = null; 
		private int        current_song = 0; 
		private int        volume = 0; 
		#endregion 
 
		#region Properties 
		public float Volume { set { volume = (int)(-4000 * (1.0f - value)); } } 
		#endregion 
 
		/// 
 
		/// Jukebox constructor 
		/// 
 
		public Jukebox( )  
		{ 
			playlist = new ArrayList(); 
		} 
 
		public void AddSong( string filename ) 
		{ 
			try 
			{ 
				Music song = new Music(filename); 
				song.Ending += new System.EventHandler(this.ClipEnded); 
				playlist.Add(song); 
			} 
			catch (DirectXException d3de) 
			{ 
				Console.AddLine("Unable to add " + filename + " to the jukebox playlist "); 
				Console.AddLine(d3de.ErrorString); 
			} 
			catch ( Exception e ) 
			{ 
				Console.AddLine("Unable to add " + filename + " to the jukebox playlist "); 
				Console.AddLine(e.Message); 
			} 
		} 
 
		public void Play() 
		{ 
			if ( current_song < playlist.Count ) 
			{ 
				Music song = (Music)(playlist[current_song]); 
				song.Ending += new System.EventHandler(this.ClipEnded); 
				song.Volume = volume; 
				song.Play(); 
			} 
		} 
 
		public void Stop() 
		{ 
			Next(); 
		} 
 
		public void Next() 
		{ 
			Music song = (Music)(playlist[current_song]); 
			song.Stop(); 
			song.SeekCurrentPosition(0.0, SeekPositionFlags.AbsolutePositioning ); 
			current_song++; 
			if ( current_song >= playlist.Count ) 
			{ 
				current_song = 0; 
			} 
		} 
 
		private void ClipEnded(object sender, System.EventArgs e) 
		{ 
			Next(); 
			Play(); 
		} 
 
		public void Dispose() 
		{ 
			foreach ( Music song in playlist ) 
			{ 
				song.Dispose(); 
			} 
		} 
 
	} 
}