Add advances sound parameters

src/audio/sound.cpp

@@ -50,6 +50,18 @@ std::shared_ptr<const audio::Sound> audio::Sound::LoadFromFile(const std::string
         {
             iss >> sound->pitch_;
         }
+        else if (cmd == "refdistance")
+        {
+            iss >> sound->ref_distance_;
+        }
+        else if (cmd == "rolloff")
+        {
+            iss >> sound->rolloff_ractor_;
+        }
+        else if (cmd == "maxdistance")
+        {
+            iss >> sound->max_distance_;
+        }
     });
 
     if (sound->category_name_.empty())

src/audio/sound.hpp

@@ -20,6 +20,10 @@ public:
     float GetVolume() const { return volume_; }
     float GetPitch() const { return pitch_; }
 
+    float GetRefDistance() const { return ref_distance_; }
+    float GetRolloffFactor() const { return rolloff_ractor_; }
+    float GetMaxDistance() const { return max_distance_; }
+
     ~Sound();
 
 private:
@@ -29,6 +33,10 @@ private:
 
     float volume_ = 1.0f;
     float pitch_ = 1.0f;
+
+    float ref_distance_ = 1.0f;
+    float rolloff_ractor_= 1.0f;
+    float max_distance_ = 200.0f;
 };
 
 } // namespace audio

src/audio/sound_source.cpp

@@ -12,6 +12,11 @@ audio::SoundSource::SoundSource(Player* player, std::shared_ptr<const Sound> sou
     SetPitch(1.0f);
 
     alSourcei(source_, AL_BUFFER, sound_->GetBufferId());
+    
+    // params
+    alSourcef(source_, AL_REFERENCE_DISTANCE, sound_->GetRefDistance());
+    alSourcef(source_, AL_ROLLOFF_FACTOR, sound_->GetRolloffFactor());
+    alSourcef(source_, AL_MAX_DISTANCE, sound_->GetMaxDistance());
 }
 
 void audio::SoundSource::SetLooping(bool looping)