Code for changing music in pause mode

As requested by @Emxx52. Only code for now, we don't have the music yet. Temporairly in developements builds music will change to Prototype (in CBot editor) and Constructive Destruction (in SatCom)

6 files changed, 108 insertions, 10 deletions

diff --git a/src/sound/oalsound/alsound.cpp b/src/sound/oalsound/alsound.cpp
index 7f5d1f1..5058141 100644
--- a/src/sound/oalsound/alsound.cpp
+++ b/src/sound/oalsound/alsound.cpp
@@ -31,6 +31,8 @@ ALSound::ALSound()
     m_currentMusic = nullptr;
     m_eye.LoadZero();
     m_lookat.LoadZero();
+    m_previousMusic.fadeTime = 0.0f;
+    m_previousMusic.music = nullptr;
 }
 
 
@@ -62,6 +64,11 @@ void ALSound::CleanUp()
         {
             delete item.music;
         }
+        
+        if (m_previousMusic.music)
+        {
+            delete m_previousMusic.music;
+        }
 
         for (auto item : m_sounds)
         {
@@ -552,6 +559,15 @@ void ALSound::FrameMove(float delta)
         }
     }
     
+    if (m_previousMusic.fadeTime > 0.0f) {
+        if (m_previousMusic.currentTime >= m_previousMusic.fadeTime) {
+            m_previousMusic.music->Pause();
+        } else {
+            m_previousMusic.currentTime += delta;
+            m_previousMusic.music->SetVolume(((m_previousMusic.fadeTime-m_previousMusic.currentTime) / m_previousMusic.fadeTime) * m_musicVolume);
+        }
+    }
+    
     for (auto it : toRemove)
         m_oldMusic.remove(it);
 }
@@ -609,6 +625,7 @@ bool ALSound::PlayMusic(const std::string &filename, bool bRepeat, float fadeTim
         
         buffer = new Buffer();
         buffer->LoadFromFile(file.str(), static_cast<Sound>(-1));
+        m_music[filename] = buffer;
     }
     else
     {
@@ -633,6 +650,43 @@ bool ALSound::PlayMusic(const std::string &filename, bool bRepeat, float fadeTim
     return true;
 }
 
+bool ALSound::PlayPauseMusic(const std::string &filename)
+{
+    if (m_previousMusic.fadeTime > 0.0f) {
+        OldMusic old;
+        old.music = m_currentMusic;
+        old.fadeTime = 2.0f;
+        old.currentTime = 0.0f;
+        m_oldMusic.push_back(old);
+        m_currentMusic = nullptr;
+    } else {
+        if (m_currentMusic) {
+            m_previousMusic.music = m_currentMusic;
+            m_previousMusic.fadeTime = 2.0f;
+            m_previousMusic.currentTime = 0.0f;
+            m_currentMusic = nullptr;
+        }
+    }
+    return PlayMusic(filename, true);
+}
+
+void ALSound::StopPauseMusic()
+{
+    if (m_previousMusic.fadeTime > 0.0f) {
+        StopMusic();
+        
+        m_currentMusic = m_previousMusic.music;
+        m_previousMusic.music = nullptr;
+        if(m_currentMusic != nullptr) {
+            m_currentMusic->SetVolume(m_musicVolume);
+            if(m_previousMusic.currentTime >= m_previousMusic.fadeTime) {
+                m_currentMusic->Play();
+            }
+        }
+        m_previousMusic.fadeTime = 0.0f;
+    }
+}
+
 
 bool ALSound::RestartMusic()
 {
diff --git a/src/sound/oalsound/alsound.h b/src/sound/oalsound/alsound.h
index cd3bdd5..6fb832e 100644
--- a/src/sound/oalsound/alsound.h
+++ b/src/sound/oalsound/alsound.h
@@ -72,12 +72,14 @@ public:
     bool StopAll();
     bool MuteAll(bool bMute);
 
-    bool PlayMusic(int rank, bool bRepeat, float fadeTime=5.0f);
-    bool PlayMusic(const std::string &filename, bool bRepeat, float fadeTime=5.0f);
+    bool PlayMusic(int rank, bool bRepeat, float fadeTime=2.0f);
+    bool PlayMusic(const std::string &filename, bool bRepeat, float fadeTime=2.0f);
     bool RestartMusic();
     void SuspendMusic();
-    void StopMusic(float fadeTime=5.0f);
+    void StopMusic(float fadeTime=2.0f);
     bool IsPlayingMusic();
+    bool PlayPauseMusic(const std::string &filename);
+    void StopPauseMusic();
 
 private:
     void CleanUp();
@@ -94,6 +96,7 @@ private:
     std::map<int, Channel*> m_channels;
     Channel *m_currentMusic;
     std::list<OldMusic> m_oldMusic;
+    OldMusic m_previousMusic;
     Math::Vector m_eye;
     Math::Vector m_lookat;
 };
diff --git a/src/sound/oalsound/channel.cpp b/src/sound/oalsound/channel.cpp
index b053316..e58ab54 100644
--- a/src/sound/oalsound/channel.cpp
+++ b/src/sound/oalsound/channel.cpp
@@ -74,6 +74,21 @@ bool Channel::Play()
     return true;
 }
 
+bool Channel::Pause()
+{
+    if(!m_ready || !IsPlaying())
+    {
+        return false;
+    }
+    
+    alSourcePause(m_source);
+    if (alCheck())
+    {
+        GetLogger()->Warn("Could not pause audio sound source. Code: %d\n", alGetCode());
+    }
+    return true;
+}
+
 
 bool Channel::SetPosition(const Math::Vector &pos)
 {
diff --git a/src/sound/oalsound/channel.h b/src/sound/oalsound/channel.h
index 0c6cafc..f973198 100644
--- a/src/sound/oalsound/channel.h
+++ b/src/sound/oalsound/channel.h
@@ -50,6 +50,7 @@ public:
     ~Channel();
 
     bool Play();
+    bool Pause();
     bool Stop();
 
     bool SetPosition(const Math::Vector &);
diff --git a/src/sound/sound.cpp b/src/sound/sound.cpp
index 1605e2b..3802611 100644
--- a/src/sound/sound.cpp
+++ b/src/sound/sound.cpp
@@ -59,6 +59,12 @@ void CSoundInterface::AddMusicFiles(const std::string &path)
     CacheMusic("Intro2.ogg");
     CacheMusic("music010.ogg");
     CacheMusic("music011.ogg");
+    // TODO: Add pause music here
+    // CacheMusic("");
+    #if DEV_BUILD
+    CacheMusic("Prototype.ogg");
+    CacheMusic("Constructive.ogg");
+    #endif
 }
 
 bool CSoundInterface::Cache(Sound bSound, const std::string &bFile)
@@ -175,3 +181,11 @@ bool CSoundInterface::IsPlayingMusic()
     return true;
 }
 
+bool CSoundInterface::PlayPauseMusic(const std::string &filename)
+{
+    return true;
+}
+
+void CSoundInterface::StopPauseMusic()
+{
+}
diff --git a/src/sound/sound.h b/src/sound/sound.h
index d2eee9c..135ee43 100644
--- a/src/sound/sound.h
+++ b/src/sound/sound.h
@@ -287,7 +287,7 @@ public:
      * \param fadeTime - time of transition between music
      * \return return true on success
      */
-    virtual bool PlayMusic(int rank, bool bRepeat, float fadeTime=5.0f);
+    virtual bool PlayMusic(int rank, bool bRepeat, float fadeTime=2.0f);
 
     /** Start playing music
      * \param filename - name of file to play
@@ -295,27 +295,38 @@ public:
      * \param fadeTime - time of transition between music
      * \return return true on success
      */
-    virtual bool PlayMusic(const std::string &filename, bool bRepeat, float fadeTime=5.0f);
+    virtual bool PlayMusic(const std::string &filename, bool bRepeat, float fadeTime=2.0f);
 
     /** Restart music
-     * @return return true on success
+     * \return return true on success
      */
     virtual bool RestartMusic();
 
-    /** Susspend paying music
-     * \return return true on success
+    /** Susspend playing music
+     * \return nothing
      */
     virtual void SuspendMusic();
 
     /** Stop playing music
-     * \return return true on success
+     * \return nothing
      */
-    virtual void StopMusic(float fadeTime=5.0f);
+    virtual void StopMusic(float fadeTime=2.0f);
 
     /** Check if music if playing
      * \return return true if music is playing
      */
     virtual bool IsPlayingMusic();
+    
+    /** Start playing pause music
+     * \param filename - name of file to play
+     * \return return true on success
+     */
+     virtual bool PlayPauseMusic(const std::string &filename);
+     
+     /** Stop playing pause music and return to the mission music
+      * \return nothing
+      */
+     virtual void StopPauseMusic();
 
 protected:
     std::string m_soundPath;