Added support for panning sound.

olcCodeJam2023Entry/VirusAttack.cpp

@@ -51,8 +51,7 @@ bool VirusAttack::OnUserCreate(){
 	IMAGES[MATRIX]->Sprite()->SetSampleMode(Sprite::PERIODIC);
 
 	AL.AudioSystemInit();
-	AS_Test.AL = &AL;
+	InitializeSounds();
-	AS_Test.LoadAudioSample(0, "./assets/test.wav");
 
 	units.push_back(std::make_unique<LeftShifter>(vf2d{128,128},IMAGES,true));
 	units.push_back(std::make_unique<RightShifter>(vf2d{129,129},IMAGES,true));
@@ -76,6 +75,21 @@ bool VirusAttack::OnUserCreate(){
 	return true;
 }
 
+void VirusAttack::InitializeSounds(){
+	int soundIndex=0;
+	auto LoadSound=[&](Audio&audio,std::string soundFilename){
+		audio.AL=&AL;
+		audio.LoadAudioSample(soundIndex,std::string("./assets/"+soundFilename).c_str());
+		soundIndex++;
+	};
+
+	AS_Test.SetDefaults(5,1,0,1,false);
+	AS_Test.fPlaySpeed=5;
+
+	LoadSound(AS_Test,"test.wav");
+	LoadSound(explosion,"SampleA.wav");
+}
+
 void VirusAttack::HandleDraggingSelection(){
 	auto NotClickingOnMinimap=[&](){return !(GetMouseX()>=ScreenWidth()-64&&GetMouseY()>=ScreenHeight()-64);};
 	if(GetMouse(0).bPressed){
@@ -312,9 +326,11 @@ bool VirusAttack::OnUserUpdate(float fElapsedTime){
 	HandleRightClickMove();
 	HandlePanAndZoom(fElapsedTime);
 	HandleMinimapClick();
-	
+	AL.vecPos=game.GetWorldOffset()+GetScreenSize()/2;
-	if (GetKey(olc::Key::P).bPressed)
+	AL.OnUserUpdate(fElapsedTime);
-		AS_Test.Play();
+	if (GetKey(olc::Key::P).bPressed){
+		AS_Test.Play(1,1);
+	}
 
 	for(auto&tile:TileManager::visibleTiles){
 		tile.second-=fElapsedTime;

olcCodeJam2023Entry/VirusAttack.h

@@ -35,7 +35,8 @@ private:
 	std::map<Image,std::unique_ptr<Renderable>>IMAGES;
 
 	olcPGEX_AudioListener AL;
-	olcPGEX_AudioSource AS_Test;
+	Audio AS_Test,explosion;
+	Audio*bgm;
 
 	TileTransformedView game;
 
@@ -58,6 +59,7 @@ private:
 	void UpdateMatrixTexture(float fElapsedTime);
 	void RenderCollectionPoints(CollectionPoint*cp);
 	void RenderFogOfWar();
+	void InitializeSounds();
 
 public:
 	VirusAttack();

olcCodeJam2023Entry/olcPGEX_AudioListener.h

@@ -170,6 +170,12 @@ Justin Richards
 #include "soloud.h"
 #include "soloud_wav.h"
 
+struct PlayingInstance{
+	vf2d pos;
+	float vol;
+	int handle;
+};
+
 class olcPGEX_AudioListener : public olc::PGEX
 {
 public:
@@ -201,6 +207,7 @@ public:
 
 	// Vector of Audio Samples
 	std::vector<sAudioSample> audioSamples;
+	std::vector<PlayingInstance> handles;
 	std::list<SoLoud::Wav> wavs;
 
 
@@ -220,6 +227,8 @@ public:
 
 	// Calculate distance between listener and source
 	float GetDistance(olc::vf2d sourcePos, bool returnRoot = true);
+
+	void OnUserUpdate(float fElapsedTime);
 };
 
 #ifdef AUDIO_LISTENER_IMPLEMENTATION
@@ -280,6 +289,14 @@ float olcPGEX_AudioListener::GetDistance(olc::vf2d sourcePos, bool returnRoot)
 
 }
 
+void olcPGEX_AudioListener::OnUserUpdate(float fElapsedTime){
+	std::erase_if(handles,[&](PlayingInstance&handle){return !soloud.isValidVoiceHandle(handle.handle);});
+	for(PlayingInstance&handle:handles){
+		soloud.setPan(handle.handle,std::clamp((handle.pos.x-vecPos.x)/1024,-1.f,1.f));
+		soloud.setVolume(handle.handle,handle.vol*std::max(0.f,abs(1-std::min(1.0f,(GetDistance(handle.pos)/1024.f)))));
+	}
+}
+
 #endif // AUDIO_LISTENER_IMPLEMENTATION
 
 #endif

olcCodeJam2023Entry/olcPGEX_AudioSource.h

@@ -101,7 +101,6 @@ public:
 	olc::vf2d pos = { 0.0f, 0.0f };
 
 
-
 	// Instruct Audio Listener to load this sound (if not loaded already)
 	void LoadAudioSample(int ID, const char* fileName);
 
@@ -141,17 +140,21 @@ void olcPGEX_AudioSource::Play(float speed, float vol, bool looping, bool paused
 {
 	// Set parameters
 	fPlaySpeed = speed;
-	fVolume = vol;
+	fVolume = vol*std::max(0.f,abs(1-std::min(1.0f,(AL->GetDistance(pos)/1024.f))));
 	bLooping = looping;
 	bPaused = paused;
 
 	// Assign a handle to this instance of the sound we are about to play
 	handle = AL->soloud.play(*AL->GetAudioSampleByID(nID)->wav, fVolume, 0.0f, bPaused);
 
+	AL->handles.push_back({pos,vol,handle});
+
 	// Set speed and looping 
 	AL->soloud.setRelativePlaySpeed(handle, fPlaySpeed);
 	AL->soloud.setLooping(handle, looping);
 
+	AL->soloud.setPan(handle,std::clamp((pos.x-AL->vecPos.x)/1024,-1.f,1.f));
+	
 	// Update Play status
 	bIsPlaying = true;
 }
@@ -221,4 +224,6 @@ void olcPGEX_AudioSource::SetDefaults(float speed, float vol, float minVol, floa
 }
 
 #endif // AUDIO_SOURCE_IMPLEMENTATION
-#endif
+#endif
+
+typedef olcPGEX_AudioSource Audio;