Play Background Music in a List

Vocaluxe/Base/CBackgroundMusic.cs

@@ -4,6 +4,7 @@ using System.Text;
 using System.IO;
 
 using Vocaluxe.Base;
+using System.Diagnostics;
 
 namespace Vocaluxe.Base
 {
@@ -11,6 +12,10 @@ namespace Vocaluxe.Base
     {
         private static CHelper Helper = new CHelper();
         private static List<int> _BackgroundMusicStreams = new List<int>();
+        private static int _CurrentMusicStream;
+        private static int _CurrentStreamListIndex = 0;
+        private static bool _Fading;
+        private static Stopwatch _FadeTimer = new Stopwatch();
 
         public static void init()
         {
@@ -24,33 +29,62 @@ namespace Vocaluxe.Base
             {
                 _BackgroundMusicStreams.Add(CSound.Load(file));
             }
+            _CurrentMusicStream = _BackgroundMusicStreams[0];
         }
 
         public static void Play()
         {
             if (CConfig.BackgroundMusic == EOffOn.TR_CONFIG_ON)
             {
-                foreach (int i in _BackgroundMusicStreams)
+                if(_BackgroundMusicStreams.Count == 1)
                 {
-                    CSound.Fade(i, CConfig.BackgroundMusicVolume, CConfig.FadeTime);
-                    CSound.Play(i, true);
+                    CSound.Fade(_BackgroundMusicStreams[0], CConfig.BackgroundMusicVolume, CConfig.FadeTime);
+                    CSound.Play(_BackgroundMusicStreams[0], true);
+                }
+                else if (_BackgroundMusicStreams.Count > 1)
+                {
+                    CSound.Fade(_CurrentMusicStream, CConfig.BackgroundMusicVolume, CConfig.FadeTime);
+                    CSound.Play(_CurrentMusicStream);
                 }
             }
         }
 
         public static void Stop()
         {
-            foreach (int i in _BackgroundMusicStreams)
-            {
-                CSound.FadeAndStop(i, CConfig.BackgroundMusicVolume, CConfig.FadeTime);
-            }
+            CSound.FadeAndStop(_BackgroundMusicStreams[_CurrentStreamListIndex], CConfig.BackgroundMusicVolume, CConfig.FadeTime);
         }
 
         public static void Pause()
         {
-            foreach (int i in _BackgroundMusicStreams)
+            CSound.Pause(_BackgroundMusicStreams[_CurrentStreamListIndex]);
+        }
+
+        public static void Update()
+        {
+            if (_BackgroundMusicStreams.Count > 1)
             {
-                CSound.Pause(i);
+                float timeToPlay = CSound.GetLength(_CurrentMusicStream) - CSound.GetPosition(_CurrentMusicStream);
+                if (_FadeTimer.ElapsedMilliseconds >= CConfig.FadeTime * 1000)
+                {
+                    _Fading = false;
+                    _FadeTimer.Reset();
+                }
+                if ((timeToPlay <= CConfig.FadeTime) && !_Fading)
+                {
+                    _FadeTimer.Start();
+                    CSound.Fade(_CurrentMusicStream, 0, CConfig.FadeTime);
+                    _CurrentStreamListIndex++;
+                    if (_CurrentStreamListIndex + 1 > _BackgroundMusicStreams.Count)
+                    {
+                        _CurrentStreamListIndex = 0;
+                        _CurrentMusicStream = _BackgroundMusicStreams[_CurrentStreamListIndex];
+                    }
+                    else
+                        _CurrentMusicStream = _BackgroundMusicStreams[_CurrentStreamListIndex];
+                    CSound.SetPosition(_CurrentStreamListIndex, 0);
+                    Play();
+                    _Fading = true;
+                }
             }
         }
     }

Vocaluxe/Menu/CGraphics.cs

@@ -292,6 +292,7 @@ namespace Vocaluxe.Menu
             Keys.CopyEvents();
 
             CSound.Update();
+            CBackgroundMusic.Update();
 
             if (CConfig.CoverLoading == ECoverLoading.TR_CONFIG_COVERLOADING_DYNAMIC && ActualScreen != EScreens.ScreenSing)
                 CSongs.LoadCover(30L);