build 210424. soundproofing enhancement, battery sound, heating command propagation, memory cell command retrieval logic enhancement, coupling mode logic enhancement, motor overload relay threshold cab control animation fix, cab control fallback sound activation fixes,

sound.h

@@ -116,6 +116,11 @@ public:
         start( float const Offset );
     float const &
         start() const;
+    // custom soundproofing setter/getter
+    auto &
+        soundproofing();
+    auto const &
+        soundproofing() const;
     // returns true if there isn't any sound buffer associated with the object, false otherwise
     bool
         empty() const;
@@ -231,6 +236,7 @@ private:
     std::vector<soundchunk_pair> m_soundchunks; // table of samples activated when associated variable is within certain range
     bool m_soundchunksempty { true }; // helper, cached check whether sample table is linked with any actual samples
     int m_crossfaderange {}; // range of transition from one chunk to another
+    std::optional< std::array<float, 6> > m_soundproofing; // custom soundproofing parameters
 };
 
 // owner setter/getter
@@ -245,6 +251,10 @@ inline std::string const & sound_source::name() const { return m_name; }
 // playback starting point shift setter/getter
 inline void sound_source::start( float const Offset ) { m_startoffset = Offset; }
 inline float const & sound_source::start() const { return m_startoffset; }
+// custom soundproofing setter/getter
+inline auto & sound_source::soundproofing() { return m_soundproofing; }
+inline auto const & sound_source::soundproofing() const { return m_soundproofing; }
+
 
 // collection of sound sources present in the scene
 class sound_table : public basic_table<sound_source> {