* More work on sound

src/sound/oalsound/alsound.cpp

@@ -314,12 +314,12 @@ int ALSound::Play(Sound sound, Math::Vector pos, float amplitude, float frequenc
             return -1;
         }
     }
-    
+
     Position(channel, pos);
     if (!m3D) {
         ComputeVolumePan2D(channel, pos);
     } else {
-        mChannels[channel]->SetVolume(1.0f);
+        mChannels[channel]->SetVolumeAtrib(1.0f);
     }
 
     // setting initial values
@@ -328,7 +328,7 @@ int ALSound::Play(Sound sound, Math::Vector pos, float amplitude, float frequenc
     mChannels[channel]->SetChangeFrequency(1.0f);
     mChannels[channel]->ResetOper();
     mChannels[channel]->SetFrequency(frequency);
-    mChannels[channel]->SetVolume(powf(amplitude * mChannels[channel]->GetVolume(), 0.2f) * mAudioVolume);
+    mChannels[channel]->SetVolume(powf(amplitude * mChannels[channel]->GetVolumeAtrib(), 0.2f) * mAudioVolume);
     mChannels[channel]->SetLoop(bLoop);
     mChannels[channel]->Play();
 
@@ -378,9 +378,14 @@ bool ALSound::Position(int channel, Math::Vector pos)
     }
 
     if (m3D) {
-        mChannels[channel]->SetPosition(pos);
+        mChannels[channel]->SetPan(pos);
     } else {
         ComputeVolumePan2D(channel, pos);
+        
+        if (!mChannels[channel]->HasEnvelope()) {
+            float volume = mChannels[channel]->GetStartAmplitude();
+            mChannels[channel]->SetVolume(powf(volume * mChannels[channel]->GetVolumeAtrib(), 0.2f) * mAudioVolume);
+        }
     }
     return true;
 }
@@ -477,8 +482,8 @@ void ALSound::FrameMove(float delta)
        
         // setting volume
         volume = progress * (oper.finalAmplitude - it.second->GetStartAmplitude());
-        volume = (volume + it.second->GetStartAmplitude());
+        volume = volume + it.second->GetStartAmplitude();
-        it.second->SetVolume(powf(volume * it.second->GetVolume(), 0.2f) * mAudioVolume);
+        it.second->SetVolume(powf(volume * it.second->GetVolumeAtrib(), 0.2f) * mAudioVolume);
 
         // setting frequency
         frequency = progress;
@@ -515,9 +520,22 @@ void ALSound::SetListener(Math::Vector eye, Math::Vector lookat)
         alListener3f(AL_POSITION, eye.x, eye.y, eye.z); 
         alListenerfv(AL_ORIENTATION, orientation);
     } else {
-        float orientation[] = {0.0f, 0.0f, -1.0f, 0.f, 1.f, 0.f};   
+        float orientation[] = {0.0f, 0.0f, 0.0f, 0.f, 1.f, 0.f};   
         alListener3f(AL_POSITION, 0.0f, 0.0f, 0.0f); 
         alListenerfv(AL_ORIENTATION, orientation);
+        
+        // recalculate sound position
+        for (auto it : mChannels) {
+            if (it.second->IsPlaying()) {
+                Math::Vector pos = it.second->GetPosition();
+                ComputeVolumePan2D(it.first, pos);
+                
+                if (!it.second->HasEnvelope()) {
+                    float volume = it.second->GetStartAmplitude();
+                    it.second->SetVolume(powf(volume * it.second->GetVolumeAtrib(), 0.2f) * mAudioVolume);
+                }
+            }
+        }
     }
 }
 
@@ -612,24 +630,25 @@ void ALSound::SuspendMusic()
 void ALSound::ComputeVolumePan2D(int channel, Math::Vector &pos)
 {
     float dist, a, g;
+    mChannels[channel]->SetPosition(pos);
 
     if (VectorsEqual(pos, mEye)) {
-        mChannels[channel]->SetVolume(1.0f);  // maximum volume
+        mChannels[channel]->SetVolumeAtrib(1.0f);  // maximum volume
-        mChannels[channel]->SetPosition(Math::Vector());  // at the center
+        mChannels[channel]->SetPan(Math::Vector());  // at the center
         return;
     }
 
     dist = Distance(pos, mEye);
     if ( dist >= 110.0f ) { // very far?
-        mChannels[channel]->SetVolume(0.0f);  // silence
+        mChannels[channel]->SetVolumeAtrib(0.0f);  // silence
-        mChannels[channel]->SetPosition(Math::Vector());  // at the center
+        mChannels[channel]->SetPan(Math::Vector());  // at the center
         return;
     } else if ( dist <= 10.0f ) { // very close?
-        mChannels[channel]->SetVolume(1.0f);   // maximum volume
+        mChannels[channel]->SetVolumeAtrib(1.0f);   // maximum volume
-        mChannels[channel]->SetPosition(Math::Vector());  // at the center
+        mChannels[channel]->SetPan(Math::Vector());  // at the center
         return;
     }
-    mChannels[channel]->SetVolume(1.0f - ((dist - 10.0f) / 100.0f));
+    mChannels[channel]->SetVolumeAtrib(1.0f - ((dist - 10.0f) / 100.0f));
 
     a = fmodf(Angle(mLookat, mEye), Math::PI * 2.0f);
     g = fmodf(Angle(pos, mEye), Math::PI * 2.0f);
@@ -651,5 +670,5 @@ void ALSound::ComputeVolumePan2D(int channel, Math::Vector &pos)
         }
     }
     
-    mChannels[channel]->SetPosition( Math::Vector(sinf(g - a), 0.0f, 0.0f) );
+    mChannels[channel]->SetPan( Math::Vector(sinf(g - a), 0.0f, 0.0f) );
 }

src/sound/oalsound/channel.cpp

@@ -17,7 +17,8 @@
 
 #include "channel.h"
 
-Channel::Channel() {
+Channel::Channel()
+{
     alGenSources(1, &mSource);
 
     if (alCheck()) {
@@ -35,10 +36,12 @@ Channel::Channel() {
     mStartAmplitude = 0.0f;
     mStartFrequency = 0.0f;
     mChangeFrequency = 0.0f;
+    mVolume = 0.0f;
 }
 
 
-Channel::~Channel() {
+Channel::~Channel()
+{
     if (mReady) {
         alSourceStop(mSource);
         alSourcei(mSource, AL_BUFFER, 0);
@@ -49,7 +52,8 @@ Channel::~Channel() {
 }
 
 
-bool Channel::Play() {
+bool Channel::Play()
+{
     if (!mReady || mBuffer == nullptr) {
         return false;
     }
@@ -65,7 +69,8 @@ bool Channel::Play() {
 }
 
 
-bool Channel::SetPosition(Math::Vector pos) {
+bool Channel::SetPan(Math::Vector pos)
+{
     if (!mReady || mBuffer == nullptr) {
         return false;
     }
@@ -79,6 +84,18 @@ bool Channel::SetPosition(Math::Vector pos) {
 }
 
 
+void Channel::SetPosition(Math::Vector pos)
+{
+    mPosition = pos;
+}
+
+
+Math::Vector Channel::GetPosition()
+{
+    return mPosition;
+}
+
+
 bool Channel::SetFrequency(float freq)
 {
     if (!mReady || mBuffer == nullptr) {
@@ -143,6 +160,19 @@ float Channel::GetVolume()
 }
 
 
+void Channel::SetVolumeAtrib(float volume)
+{
+    mVolume = volume;
+}
+
+
+float Channel::GetVolumeAtrib()
+{
+    return mVolume;
+}
+
+
+
 int Channel::GetPriority()
 {
     return mPriority;

src/sound/oalsound/channel.h

@@ -48,7 +48,10 @@ class Channel
 
         bool Play();
         bool Stop();
-        bool SetPosition(Math::Vector);
+        
+        bool SetPan(Math::Vector);
+        void SetPosition(Math::Vector);
+        Math::Vector GetPosition();
 
         bool SetFrequency(float);
         float GetFrequency();
@@ -59,6 +62,9 @@ class Channel
 
         bool SetVolume(float);
         float GetVolume();
+        void SetVolumeAtrib(float);
+        float GetVolumeAtrib();
+        
         bool IsPlaying();
         bool IsReady();
         bool IsLoaded();
@@ -98,8 +104,10 @@ class Channel
         float mStartFrequency;
         float mChangeFrequency;
         float mInitFrequency;
+        float mVolume;
         std::deque<SoundOper> mOper;
         bool mReady;
         bool mLoop;
         bool mMute;
+        Math::Vector mPosition;
 };