Refactoring and commenting.

include/Engine/Sound/EContinueSound.h

@@ -6,7 +6,7 @@
 
 namespace Events
 {
-
+// Continues to play a sound from where it was paused.
 struct ContinueSound : Event
 {
     EntityID EmitterID;

include/Engine/Sound/EPauseSound.h

@@ -6,7 +6,7 @@
 
 namespace Events
 {
-
+// Pauses a playing sound
 struct PauseSound : Event
 {
     EntityID EmitterID;

include/Engine/Sound/EPlayBackgroundMusic.h

@@ -7,7 +7,7 @@
 
 namespace Events
 {
-
+// Play a sound that will be heared the same anywhere
 struct PlayBackgroundMusic : public Event
 {
     std::string FilePath = "";

include/Engine/Sound/EPlaySound.h

@@ -1,18 +0,0 @@
-#ifndef Events_PlaySound_h__
-#define Events_PlaySound_h__
-
-#include "Core/EventBroker.h"
-#include "Core/Entity.h"
-
-namespace Events
-{
-
-    struct PlaySound : Event
-{
-    std::string FilePath;
-    EntityID EmitterID;
-};
-
-}
-
-#endif

include/Engine/Sound/EPlaySoundOnEntity.h

@@ -10,6 +10,7 @@ namespace Events
 
 // Plays a sound on an entity with a SoundEmitter component attached.
 // Sound behavior is thereby specified in the SoundEmitter component.
+// ?(???)??
 struct PlaySoundOnEntity : public Event
 {
     EntityID EmitterID = 0;

include/Engine/Sound/EPlaySoundOnPosition.h

@@ -8,7 +8,7 @@
 namespace Events
 {
 
-// Plays a sound on a given position
+// Plays a sound on a given position. Idk if this would be useful.
 struct PlaySoundOnPosition : public Event
 {
     glm::vec3 Position = glm::vec3(0);

include/Engine/Sound/ESetBGMGain.h

@@ -5,7 +5,7 @@
 
 namespace Events
 {
-
+// Set the "volume" for all background sounds
 struct SetBGMGain : public Event
 {
     float Gain;

include/Engine/Sound/ESetSFXGain.h

@@ -5,7 +5,7 @@
 
 namespace Events
 {
-
+// Set the "volume" for all effect sounds
 struct SetSFXGain : public Event
 {
     float Gain;

include/Engine/Sound/EStopSound.h

@@ -6,7 +6,7 @@
 
 namespace Events
 {
-
+// Stops a sound emitter, and will also delete it.
 struct StopSound : Event
 {
     EntityID EmitterID;

include/Engine/Sound/SoundSystem.h

@@ -12,7 +12,6 @@
 #include "Core/EventBroker.h"
 #include "Rendering/RenderQueueFactory.h" // Absolute transform
 #include "Sound/Sound.h"
-#include "Sound/EPlaySound.h"
 #include "Sound/EPlaySoundOnEntity.h"
 #include "Sound/EPlaySoundOnPosition.h"
 #include "Sound/EPlayBackgroundMusic.h"
@@ -22,13 +21,17 @@
 #include "Sound/ESetBGMGain.h"
 #include "Sound/ESetSFXGain.h"
 
+enum class SoundType {
+    SFX,
+    BGM
+};
 
 struct Source
 {
     Source() { }
     Sound* SoundResource = nullptr;
     ALuint ALsource;
-    bool HasBeenPlayed = false;
+    SoundType Type;
 };
 
 class SoundSystem
@@ -42,10 +45,10 @@ public:
 private:
     // Help functions for working with OpenaAL
     void setListenerPos(glm::vec3 pos) { alListener3f(AL_POSITION, pos.x, pos.y, pos.z); };
-    glm::vec3 listnerPos() { glm::vec3 pos; alGetListener3f(AL_POSITION, &pos.x, &pos.y, &pos.z); return pos; };
     void setListenerVel(glm::vec3 vel) { alListener3f(AL_VELOCITY, vel.x, vel.y, vel.z); };
-    glm::vec3 listenerVel() { glm::vec3 vel; alGetListener3f(AL_VELOCITY, &vel.x, &vel.y, &vel.z); return vel; };
     void setListenerOri(glm::vec3 ori);
+    glm::vec3 listnerPos() { glm::vec3 pos; alGetListener3f(AL_POSITION, &pos.x, &pos.y, &pos.z); return pos; };
+    glm::vec3 listenerVel() { glm::vec3 vel; alGetListener3f(AL_VELOCITY, &vel.x, &vel.y, &vel.z); return vel; };
     glm::vec3 listenerOri() { glm::vec3 ori; alGetListener3f(AL_ORIENTATION, &ori.x, &ori.y, &ori.z); return ori; };
     void setSourcePos(ALuint source, glm::vec3 pos) { ALfloat spos[3] = { pos.x, pos.y, pos.z };  alSourcefv(source, AL_POSITION, spos); };
     void setSourceVel(ALuint source, glm::vec3 vel) { ALfloat svel[3] = { vel.x, vel.y, vel.z };  alSourcefv(source, AL_VELOCITY, svel); };
@@ -60,9 +63,9 @@ private:
     void playSound(Source* source);
     void stopSound(Source* source);
     void stopEmitters();
-    bool isPlaying(ALuint source);
+    ALenum getSourceState(ALuint source);
     void setGain(Source* source, float gain);
-    void setSoundProperties(ALuint source, float gain, float pitch, bool loop, float maxDistance, float rollOffFactor, float referenceDistance);
+    void setSoundProperties(ALuint source, ComponentWrapper* soundComponent);
 
     // OpenAL system variables
     ALCdevice* m_ALCdevice = nullptr;
@@ -72,25 +75,23 @@ private:
     World* m_World = nullptr;
     EventBroker* m_EventBroker = nullptr;
     std::unordered_map<EntityID, Source*> m_Sources;
-    float m_BGMVolumeChannel = 1.f;
+    float m_BGMVolumeChannel = 1.0f;
     float m_SFXVolumeChannel = 1.f;
     bool m_EditorEnabled = false;
 
     // Events
-    EventRelay<SoundSystem, Events::PlaySound> m_EPlaySound;
-    bool OnPlaySound(const Events::PlaySound &e);
     EventRelay<SoundSystem, Events::PlaySoundOnEntity> m_EPlaySoundOnEntity;
     bool OnPlaySoundOnEntity(const Events::PlaySoundOnEntity &e);
     EventRelay<SoundSystem, Events::PlaySoundOnPosition> m_EPlaySoundOnPosition;
     bool OnPlaySoundOnPosition(const Events::PlaySoundOnPosition &e);
+    EventRelay<SoundSystem, Events::PlayBackgroundMusic> m_EPlayBackgroundMusic;
+    bool OnPlayBackgroundMusic(const Events::PlayBackgroundMusic &e);
     EventRelay<SoundSystem, Events::PauseSound> m_EPauseSound;
     bool OnPauseSound(const Events::PauseSound &e);
     EventRelay<SoundSystem, Events::StopSound> m_EStopSound;
     bool OnStopSound(const Events::StopSound &e);
     EventRelay<SoundSystem, Events::ContinueSound> m_EContinueSound;
     bool OnContinueSound(const Events::ContinueSound &e);
-    EventRelay<SoundSystem, Events::PlayBackgroundMusic> m_EPlayBackgroundMusic;
-    bool OnPlayBackgroundMusic(const Events::PlayBackgroundMusic &e);
     EventRelay<SoundSystem, Events::SetBGMGain> m_ESetBGMGain; 
     bool OnSetBGMGain(const Events::SetBGMGain &e); // Not tested
     EventRelay<SoundSystem, Events::SetSFXGain> m_ESetSFXGain; 

src/Engine/Sound/SoundSystem.cpp

@@ -8,38 +8,24 @@ SoundSystem::SoundSystem(World* world, EventBroker* eventBroker, bool editorMode
 
     initOpenAL();
 
-    alSpeedOfSound(340.29f); // Speed of sound
+    alSpeedOfSound(340.29f);
     alDistanceModel(AL_LINEAR_DISTANCE);
     alDopplerFactor(1);
 
-    EVENT_SUBSCRIBE_MEMBER(m_EPlaySound, &SoundSystem::OnPlaySound);
     EVENT_SUBSCRIBE_MEMBER(m_EPlaySoundOnEntity, &SoundSystem::OnPlaySoundOnEntity);
     EVENT_SUBSCRIBE_MEMBER(m_EPlaySoundOnPosition, &SoundSystem::OnPlaySoundOnPosition);
+    EVENT_SUBSCRIBE_MEMBER(m_EPlayBackgroundMusic, &SoundSystem::OnPlayBackgroundMusic);
     EVENT_SUBSCRIBE_MEMBER(m_EStopSound, &SoundSystem::OnStopSound);
     EVENT_SUBSCRIBE_MEMBER(m_EPauseSound, &SoundSystem::OnPauseSound);
     EVENT_SUBSCRIBE_MEMBER(m_EContinueSound, &SoundSystem::OnContinueSound);
-    EVENT_SUBSCRIBE_MEMBER(m_EPlayBackgroundMusic, &SoundSystem::OnPlayBackgroundMusic);
+    EVENT_SUBSCRIBE_MEMBER(m_ESetBGMGain, &SoundSystem::OnSetBGMGain);
-    //EVENT_SUBSCRIBE_MEMBER(m_ESetBGMGain, &SoundSystem::SetBGMGain);
+    EVENT_SUBSCRIBE_MEMBER(m_ESetSFXGain, &SoundSystem::OnSetSFXGain);
-    //EVENT_SUBSCRIBE_MEMBER(m_ESetSFXGain, &SoundSystem::OnSetSFXGain);
-}
-
-void SoundSystem::initOpenAL()
-{
-    // Initialize OpenAL
-    m_ALCdevice = alcOpenDevice(nullptr);
-    if (m_ALCdevice != nullptr) {
-        m_ALCcontext = alcCreateContext(m_ALCdevice, nullptr);
-        alcMakeContextCurrent(m_ALCcontext);
-    } else {
-        LOG_ERROR("OpenAL failed to initialize.");
-    }
 }
 
 SoundSystem::~SoundSystem()
 {
     stopEmitters(); // Stopps emitters
     deleteInactiveEmitters(); // Deletes stopped emitters
-
     // Delete entities
     std::unordered_map<EntityID, Source*>::iterator it;
     for (it = m_Sources.begin(); it != m_Sources.end(); it++) {
@@ -49,15 +35,13 @@ SoundSystem::~SoundSystem()
 
     alcDestroyContext(m_ALCcontext);
     alcCloseDevice(m_ALCdevice);
-    delete m_ALCcontext;
-    delete m_ALCdevice;
 }
 
 void SoundSystem::stopEmitters()
 {
     std::unordered_map<EntityID, Source*>::iterator it;
     for (it = m_Sources.begin(); it != m_Sources.end(); it++) {
-        if (isPlaying((*it).second->ALsource)) {
+        if (getSourceState((*it).second->ALsource) == AL_PLAYING) {
             stopSound((*it).second);
         }
     }
@@ -65,42 +49,35 @@ void SoundSystem::stopEmitters()
 
 void SoundSystem::Update()
 { 
-    addNewEmitters();
+    addNewEmitters(); // can be optimized with "EEntityCreated"
-    deleteInactiveEmitters();
+    deleteInactiveEmitters(); // can be optimized with "EEntityDeleted"
     updateEmitters();
     updateListener();
 }
 
 void SoundSystem::deleteInactiveEmitters()
 {
-    auto emitterComponents = m_World->GetComponents("SoundEmitter");
-    for (auto it = emitterComponents->begin(); it != emitterComponents->end();) {
-        EntityID emitter = (*it).EntityID;
-        Source* source = m_Sources[emitter];
-        if (isPlaying(source->ALsource) || !source->HasBeenPlayed) { // The sound is still playing, do not remove
-            it++;
-            continue;
-        } 
-        else {
-            alDeleteBuffers(1, &source->ALsource);
-            alDeleteSources(1, &source->ALsource);
-            //delete m_Sources[emitter]->SoundResource;
-            m_Sources.erase(emitter);
-            m_World->DeleteEntity(emitter);
-        } 
-    }
-
     std::unordered_map<EntityID, Source*>::iterator it;
     for (it = m_Sources.begin(); it != m_Sources.end();) {
         if (m_World->ValidEntity((*it).first)) {
-            // Entity is valid, move on.
+            if (getSourceState(it->second->ALsource) != AL_STOPPED) {
-            it++;
+                // Nothing to see here, move along
-            continue;
+                it++;
+                continue;
+            } else {
+                // Sound has been stopped / finished playing
+                alDeleteBuffers(1, &it->second->ALsource);
+                alDeleteSources(1, &it->second->ALsource);
+                delete it->second->SoundResource;
+                m_World->DeleteEntity(it->first);
+                it = m_Sources.erase(it);
+            }
         } else {
+            // Entity has been removed
             stopSound((*it).second);
-            alDeleteBuffers(1, &m_Sources[(*it).first]->ALsource);
+            alDeleteBuffers(1, &it->second->ALsource);
-            alDeleteSources(1, &m_Sources[(*it).first]->ALsource);
+            alDeleteSources(1, &it->second->ALsource);
-            //delete m_Sources[emitter]->SoundResource;
+            delete it->second->SoundResource;
             it = m_Sources.erase(it);
         }
     }
@@ -111,19 +88,10 @@ void SoundSystem::addNewEmitters()
     auto emitterComponents = m_World->GetComponents("SoundEmitter");
     for (auto it = emitterComponents->begin(); it != emitterComponents->end(); it++) {
         EntityID emitter = (*it).EntityID;
-        std::unordered_map<EntityID, Source*>::iterator i;
+        std::unordered_map<EntityID, Source*>::iterator source;
-        i = m_Sources.find(emitter);
+        source = m_Sources.find(emitter);
-        if (i == m_Sources.end()) { // Did not exist, add it
+        if (source == m_Sources.end()) { // Did not exist, add it
             Source* source = createSource((std::string)(*it)["FilePath"]);
-            setSoundProperties(
-                source->ALsource,
-                (float)(double)(*it)["Gain"],
-                (float)(double)(*it)["Pitch"],
-                (bool)(*it)["Loop"],
-                (float)(double)(*it)["MaxDistance"],
-                (float)(double)(*it)["RollOffFactor"],
-                (float)(double)(*it)["ReferenceDistance"]
-                );
             m_Sources[emitter] = source;
         }
     }
@@ -131,45 +99,30 @@ void SoundSystem::addNewEmitters()
 
 void SoundSystem::updateEmitters()
 {
-    auto emitterComponents = m_World->GetComponents("SoundEmitter");
+    std::unordered_map<EntityID, Source*>::iterator it;
-    for (auto it = emitterComponents->begin(); it != emitterComponents->end();) {
+    for (it = m_Sources.begin(); it != m_Sources.end(); it++) {
-        EntityID emitter = (*it).EntityID;
+        // Get previous pos
-        if (!m_World->ValidEntity(emitter)) { // Entity has been deleted
+        glm::vec3 previousPos;
-            // Delete
+        alGetSource3f(it->second->ALsource, AL_POSITION, &previousPos.x, &previousPos.y, &previousPos.z);
-        } else {
+        // Get next pos
-            std::unordered_map<EntityID, Source*>::iterator i;
+        glm::vec3 nextPos = RenderQueueFactory::AbsolutePosition(m_World, it->first);
-            i = m_Sources.find(emitter);
+        // Calculate velocity
-            if (i != m_Sources.end()) {
+        glm::vec3 velocity = nextPos - previousPos;
-                // Get previous pos
+        setSourcePos(it->second->ALsource, nextPos);
-                glm::vec3 previousPos;
+        setSourceVel(it->second->ALsource, velocity);
-                alGetSource3f(i->second->ALsource, AL_POSITION, &previousPos.x, &previousPos.y, &previousPos.z);
+        float gain;
-                // Get next pos
+        (bool)(it->second->Type) ? gain = m_SFXVolumeChannel : gain = m_BGMVolumeChannel;
-                glm::vec3 nextPos = RenderQueueFactory::AbsolutePosition(m_World, emitter);
+        auto emitter = m_World->GetComponent(it->first, "SoundEmitter");
-                // Calculate velocity
+        setSoundProperties(it->second->ALsource, &emitter);
-                glm::vec3 velocity = nextPos - previousPos;
-                setSourcePos(i->second->ALsource, nextPos);
-                setSourceVel(i->second->ALsource, velocity);
-                setSoundProperties(
-                    i->second->ALsource,
-                    (float)(double)(*it)["Gain"],
-                    (float)(double)(*it)["Pitch"],
-                    (bool)(*it)["Loop"],
-                    (float)(double)(*it)["MaxDistance"],
-                    (float)(double)(*it)["RollOffFactor"],
-                    (float)(double)(*it)["ReferenceDistance"]
-                    );
 
-                // To make an emitter play when spawned in editor mode
+        // To make an emitter play when spawned in editor mode
-                if (m_EditorEnabled) {
+        if (m_EditorEnabled) {
-                    // Path changed
+            // Path changed
-                    if (i->second->SoundResource->Path() != (std::string)(*it)["FilePath"]) {
+            if (it->second->SoundResource->Path() != (std::string)emitter["FilePath"]) {
-                        i->second->SoundResource = ResourceManager::Load<Sound>((std::string)(*it)["FilePath"]);
+                it->second->SoundResource = ResourceManager::Load<Sound>((std::string)emitter["FilePath"]);
-                        if (i->second->SoundResource->Buffer() != 0) {
+                if (it->second->SoundResource->Buffer() != 0) {
-                            playSound(i->second);
+                    playSound(it->second);
-                        }
-                    }
                 }
-                it++;
             }
         }
     }
@@ -207,7 +160,6 @@ void SoundSystem::playSound(Source* source)
 {
     alSourcei(source->ALsource, AL_BUFFER, source->SoundResource->Buffer());
     alSourcePlay(source->ALsource);
-    source->HasBeenPlayed = true;
 }
 
 void SoundSystem::stopSound(Source* source)
@@ -215,16 +167,10 @@ void SoundSystem::stopSound(Source* source)
     alSourceStop(source->ALsource);
 }
 
-bool SoundSystem::OnPlaySound(const Events::PlaySound & e)
-{
-    Source* sauce = createSource(e.FilePath);
-    playSound(sauce);
-    return false;
-}
-
 bool SoundSystem::OnPlaySoundOnEntity(const Events::PlaySoundOnEntity & e)
 {
     Source* source = createSource(e.FilePath);
+    source->Type = SoundType::SFX;
     m_Sources[e.EmitterID] = source;
     playSound(source);
     return false;
@@ -245,6 +191,7 @@ bool SoundSystem::OnPlaySoundOnPosition(const Events::PlaySoundOnPosition & e)
     (float&)(double)emitter["ReferenceDistance"] = e.ReferenceDistance;
     auto model = m_World->AttachComponent(emitterID, "Model");
     (std::string&)model["Resource"] = "Models/Core/UnitCube.obj";
+    source->Type = SoundType::SFX;
     m_Sources[emitterID] = source;
     playSound(source);
     return false;
@@ -278,6 +225,7 @@ bool SoundSystem::OnPlayBackgroundMusic(const Events::PlayBackgroundMusic & e)
         (std::string&)emitter["FilePath"] = e.FilePath;
         m_World->AttachComponent(emitterChild, "Transform");
         Source* source = createSource(e.FilePath);
+        source->Type = SoundType::BGM;
         m_Sources[emitterChild] = source;
         playSound(source);
     }
@@ -312,11 +260,11 @@ void SoundSystem::setListenerOri(glm::vec3 ori)
     alListenerfv(AL_ORIENTATION, lOri);
 }
 
-bool SoundSystem::isPlaying(ALuint source)
+ALenum SoundSystem::getSourceState(ALuint source)
 {
     ALenum state;
     alGetSourcei(source, AL_SOURCE_STATE, &state);
-    return (state == AL_PLAYING);
+    return state;
 }
 
 void SoundSystem::setGain(Source * source, float gain)
@@ -324,12 +272,24 @@ void SoundSystem::setGain(Source * source, float gain)
     alSourcef(source->ALsource, AL_GAIN, gain);
 }
 
-void SoundSystem::setSoundProperties(ALuint source, float gain, float pitch, bool loop, float maxDistance, float rollOffFactor, float referenceDistance)
+void SoundSystem::setSoundProperties(ALuint source, ComponentWrapper* soundComponent)
 {
-    alSourcef(source, AL_GAIN, gain * m_SFXVolumeChannel);
+    alSourcef(source, AL_GAIN, (float)(double)(*soundComponent)["Gain"]);
-    alSourcef(source, AL_PITCH, pitch);
+    alSourcef(source, AL_PITCH, (float)(double)(*soundComponent)["Pitch"]);
-    alSourcei(source, AL_LOOPING, (int)loop); // YOLO
+    alSourcei(source, AL_LOOPING, (int)(bool)(*soundComponent)["Loop"]); // YOLO
-    alSourcef(source, AL_MAX_DISTANCE, maxDistance);
+    alSourcef(source, AL_MAX_DISTANCE, (float)(double)(*soundComponent)["MaxDistance"]);
-    alSourcef(source, AL_ROLLOFF_FACTOR, rollOffFactor);
+    alSourcef(source, AL_ROLLOFF_FACTOR, (float)(double)(*soundComponent)["RollOffFactor"]);
-    alSourcef(source, AL_REFERENCE_DISTANCE, referenceDistance);
+    alSourcef(source, AL_REFERENCE_DISTANCE, (float)(double)(*soundComponent)["ReferenceDistance"]);
+}
+
+void SoundSystem::initOpenAL()
+{
+    // Initialize OpenAL
+    m_ALCdevice = alcOpenDevice(nullptr);
+    if (m_ALCdevice != nullptr) {
+        m_ALCcontext = alcCreateContext(m_ALCdevice, nullptr);
+        alcMakeContextCurrent(m_ALCcontext);
+    } else {
+        LOG_ERROR("OpenAL failed to initialize.");
+    }
 }

src/Game/Game.cpp

@@ -144,7 +144,7 @@ bool Game::debugOnInputCommand(const Events::InputCommand & e)
 {
     if (e.Command == "PlaySound" && e.Value > 0) {
         Events::PlayBackgroundMusic e;
-        e.FilePath = "Audio/crosscounter.wav";
+        e.FilePath = "Audio/5dollar.wav";
         //e.emitterID = 18; // rofl
         m_EventBroker->Publish(e);
     }