Merge pull request #1377 from LennyPenny/master

Fade out music before change occurs

apps/openmw/mwsound/soundmanagerimp.cpp

@@ -328,9 +328,22 @@ namespace MWSound
         }
     }
 
+    void SoundManager::advanceMusic(const std::string& filename)
+    {
+        if (!isMusicPlaying())
+        {
+            streamMusicFull(filename);
+            return;
+        }
+
+        mNextMusic = filename;
+
+        mMusic->setFadeout(0.5f);
+    }
+
     void SoundManager::streamMusic(const std::string& filename)
     {
-        streamMusicFull("Music/"+filename);
+        advanceMusic("Music/"+filename);
     }
 
     void SoundManager::startRandomTitle()
@@ -370,7 +383,7 @@ namespace MWSound
             i = (i+1) % filelist.size();
         }
 
-        streamMusicFull(filelist[i]);
+        advanceMusic(filelist[i]);
     }
 
     bool SoundManager::isMusicPlaying()
@@ -925,6 +938,8 @@ namespace MWSound
             env
         );
 
+        updateMusic(duration);
+
         // Check if any sounds are finished playing, and trash them
         SoundMap::iterator snditer = mActiveSounds.begin();
         while(snditer != mActiveSounds.end())
@@ -1029,6 +1044,23 @@ namespace MWSound
     }
 
 
+    void SoundManager::updateMusic(float duration)
+    {
+        if (!mNextMusic.empty())
+        {
+            mMusic->updateFade(duration);
+
+            mOutput->updateStream(mMusic);
+            
+            if (mMusic->getRealVolume() <= 0.f)
+            {
+                streamMusicFull(mNextMusic);
+                mNextMusic.clear();
+            }
+        }
+    }
+
+
     void SoundManager::update(float duration)
     {
         if(!mOutput->isInitialized())

apps/openmw/mwsound/soundmanagerimp.hpp

@@ -114,9 +114,14 @@ namespace MWSound
         MWBase::SoundStreamPtr playVoice(DecoderPtr decoder, const osg::Vec3f &pos, bool playlocal);
 
         void streamMusicFull(const std::string& filename);
+        void advanceMusic(const std::string& filename);
+
         void updateSounds(float duration);
         void updateRegionSound(float duration);
         void updateWaterSound(float duration);
+        void updateMusic(float duration);
+
+        std::string mNextMusic;
 
         float volumeFromType(PlayType type) const;