Doppler effect

Escape-the-Dawn/GameWorld.cpp

@@ -19,6 +19,7 @@ void GameWorld::Initialize()
 	std::shared_ptr<Components::Camera> camera;
 	std::shared_ptr<Components::Bounds> bounds;
 	std::shared_ptr<Components::Collision> collision;
+	std::shared_ptr<Components::SoundEmitter> soundEmitter;
 	EntityID ent;
 
 	// Camera
@@ -103,6 +104,14 @@ void GameWorld::Initialize()
 	bounds = AddComponent<Components::Bounds>(m_Player, "Bounds");
 	bounds->Origin = glm::vec3(transform->Position.x, transform->Position.y - 4, transform->Position.z + 3);
 	bounds->VolumeVector = glm::vec3(4.f,0.7f,4);
+	soundEmitter = AddComponent<Components::SoundEmitter>(m_Player, "SoundEmitter");
+	soundEmitter->Loop = true;
+	soundEmitter->MaxDistance = FLT_MAX;
+	soundEmitter->ReferenceDistance = 10;
+	soundEmitter->Gain = 1;
+	soundEmitter->Pitch = 1;
+	soundEmitter->Path = "Sounds/hallelujah.wav";
+	GetSystem<Systems::SoundSystem>("SoundSystem")->PlaySound(soundEmitter);
 
 	ent = CreateEntity();
 	transform = AddComponent<Components::Transform>(ent, "Transform");

Escape-the-Dawn/Systems/CollisionSystem.cpp

@@ -12,7 +12,6 @@ void Systems::CollisionSystem::UpdateEntity(double dt, EntityID entity, EntityID
 		transform->Position[1] += parentTransform->Position[1];
 		transform->Position[2] += parentTransform->Position[2];
 	}
-	LOG_INFO("Updating entity %i with parent %i", entity, parent);
 
 	auto entities = m_World->GetEntities();
 

Escape-the-Dawn/Systems/SoundSystem.h

@@ -20,7 +20,9 @@ public:
 	void Update(double dt) override;
 	void UpdateEntity(double dt, EntityID entity, EntityID parent) override;
 	void OnComponentCreated(std::string type, std::shared_ptr<Component> component) override;
-	void PlaySound(std::shared_ptr<Components::SoundEmitter> emitter, std::string fileName);
+	void PlaySound(std::shared_ptr<Components::SoundEmitter> emitter, std::string path); // Use if you want to play a temporary .wav file not from component
+	void PlaySound(std::shared_ptr<Components::SoundEmitter> emitter); // Use if you want to play .wav file from component // imon no hate plx T.T
+	void StopSound(std::shared_ptr<Components::SoundEmitter> emitter);
 
 private:
 	ALuint LoadFile(std::string fileName);

Escape-the-Dawn/Systems/SoundsSystem.cpp

@@ -72,14 +72,27 @@ void Systems::SoundSystem::UpdateEntity(double dt, EntityID entity, EntityID par
 	}
 }
 
-void Systems::SoundSystem::PlaySound(std::shared_ptr<Components::SoundEmitter> emitter, std::string fileName)
+void Systems::SoundSystem::PlaySound(std::shared_ptr<Components::SoundEmitter> emitter, std::string path)
 {
-	ALuint buffer = LoadFile(fileName);
+	ALuint buffer = LoadFile(path);
 	ALuint source = m_Source[emitter.get()];
 	alSourcei(source, AL_BUFFER, buffer);
 	alSourcePlay(m_Source[emitter.get()]);
 }
 
+void Systems::SoundSystem::PlaySound(std::shared_ptr<Components::SoundEmitter> emitter)
+{
+	ALuint buffer = LoadFile(emitter->Path);
+	ALuint source = m_Source[emitter.get()];
+	alSourcei(source, AL_BUFFER, buffer);
+	alSourcePlay(m_Source[emitter.get()]);
+}
+
+void Systems::SoundSystem::StopSound(std::shared_ptr<Components::SoundEmitter> emitter)
+{
+	alSourceStop(m_Source[emitter.get()]);
+}
+
 void Systems::SoundSystem::OnComponentCreated(std::string type, std::shared_ptr<Component> component)
 {
 	if(type == "SoundEmitter") {
@@ -88,13 +101,13 @@ void Systems::SoundSystem::OnComponentCreated(std::string type, std::shared_ptr<
 	}
 }
 
-ALuint Systems::SoundSystem::LoadFile(std::string fileName)
+ALuint Systems::SoundSystem::LoadFile(std::string path)
 {
-	if (m_BufferCache.find(fileName) != m_BufferCache.end())
+	if (m_BufferCache.find(path) != m_BufferCache.end())
-		return m_BufferCache[fileName];
+		return m_BufferCache[path];
 
 	FILE *fp = NULL;
-	fp = fopen(fileName.c_str(), "rb");
+	fp = fopen(path.c_str(), "rb");
 
 	//CHECK FOR VALID WAVE-FILE
 	fread(type, sizeof(char), 4, fp);
@@ -160,7 +173,7 @@ ALuint Systems::SoundSystem::LoadFile(std::string fileName)
 	alBufferData(buffer, format, buf, dataSize, sampleRate);
 	delete[] buf;
 
-	m_BufferCache[fileName] = buffer;
+	m_BufferCache[path] = buffer;
 	return buffer;
 }
 
@@ -169,5 +182,8 @@ ALuint Systems::SoundSystem::CreateSource()
 	ALuint source;
 	alGenSources((ALuint)1, &source);
 
+	alDopplerFactor(2.f); // Numbers greater than 1 will increase Doppler effect, numbers lower than 1 will decrease the Doppler effect 
+	alDopplerVelocity(350.f); // Defines the velocity of the sound
+
 	return source;
 }