Support for text dialog, audio handling, and click to continue support.

olcCodeJam2023Entry/Image.h

@@ -40,5 +40,7 @@ enum Image{
 	GUIDE,
 	ROUND_BAR,
 	SEGMENT_BAR,
+	HOODED_FIGURE,
+	SPOOK_HOODED_FIGURE,
 };
 

olcCodeJam2023Entry/Scenario.cpp

@@ -1,9 +1,14 @@
 #include "Scenario.h"
 
 Scenario::Scenario(VirusAttack*game)
-	:game(game){}
+	:game(game){
+	dialog.SetVisible(false);
+}
+
+void Scenario::Start(){}
 
 void Scenario::_Update(){
+	initialWaitTimer=std::max(0.f,initialWaitTimer-game->GetElapsedTime());
 	Update();
 }
 void Scenario::_Draw(){
@@ -13,10 +18,18 @@ void Scenario::_Draw(){
 Stage1::Stage1(VirusAttack*game)
 	:Scenario(game){}
 
+void Stage1::Start(){
+	game->unitMetersGreyedOut=true;
+	game->playerInControl=false;
+}
 
 void Stage1::Update(){
-	
+	switch(state){
+		case 0:{
+			dialog.Initialize("Hello Hacker, thank you for taking on this request for me.",{24,64},"",game->IMAGES[HOODED_FIGURE].get(),{378,28},game->SOUNDS[Sound::VOICEOVER].get());
+		}break;
+	}
 }
 void Stage1::Draw(){
-
+	dialog.UpdateAndDraw({24,64},game,game->player_resources,game->IMAGES,game->GetTotalUsedMemory(),game->currentLevel->availableMemory);
 }

olcCodeJam2023Entry/Scenario.h

@@ -2,19 +2,24 @@
 #include "VirusAttack.h"
 
 class Scenario{
-	VirusAttack*game;
 public:
 	Scenario(VirusAttack*game);
+	virtual void Start();
 	void _Update();
 	virtual void Update()=0;
 	void _Draw();
 	virtual void Draw()=0;
 protected:
+	VirusAttack*game;
+	int state=0;
+	Textbox dialog;
+	float initialWaitTimer=3;
 };
 
 class Stage1:public Scenario{
 public:
 	Stage1(VirusAttack*game);
+	void Start()override;
 	void Update()override;
 	void Draw()override;
 };

olcCodeJam2023Entry/Sound.h

@@ -6,4 +6,5 @@ enum class Sound{
 	COSMOS,
 	BOSS1,
 	BOSS2,
+	VOICEOVER,
 };

olcCodeJam2023Entry/Textbox.cpp

@@ -4,7 +4,7 @@
 
 Textbox::Textbox(){};
 
-void Textbox::Initialize(std::string text,vf2d pos,std::string headerText,vf2d maxSize,std::vector<Memory>resourceCost,float letterDisplayDelay)
+void Textbox::Initialize(std::string text,vf2d pos,std::string headerText,Renderable*boxImg,vf2d maxSize,Audio*dialogSound,std::vector<Memory>resourceCost,float letterDisplayDelay)
 {
 	if(GetCurrentString()!=text){ //Make sure this is actually a new textbox
 		SetDefaults();
@@ -13,6 +13,14 @@ void Textbox::Initialize(std::string text,vf2d pos,std::string headerText,vf2d m
 		this->maxSize=maxSize;
 		this->resourceCost=resourceCost;
 		this->letterDisplayDelay=letterDisplayDelay;
+		this->boxImg=boxImg;
+		if(this->dialogSound!=nullptr){
+			this->dialogSound->Stop(soundHandle);
+		}
+		if(dialogSound!=nullptr){
+			this->dialogSound=dialogSound;
+			soundHandle=this->dialogSound->PlayCentered(1,audioVolume,true);
+		}
 		visible=true;
 	}
 }
@@ -28,11 +36,20 @@ void Textbox::SetDefaults(){
 	displayHeaderText="";
 	text="";
 	headerText="";
+	audioVolume=0;
+	continueWordTimer=0;
 }
 
 void Textbox::Update(PixelGameEngine*pge){
-	if(!visible)return;
+	if(!visible){
+		if(dialogSound!=nullptr){
+			audioVolume=std::max(0.f,audioVolume-pge->GetElapsedTime()*2);
+			dialogSound->SetVolume(soundHandle,audioVolume);
+		}
+		return;
+	}
 	lastLetterTime-=pge->GetElapsedTime();
+	continueWordTimer+=pge->GetElapsedTime();
 	if(lastLetterTime<=0){
 		if(textboxMarker<int(text.length()-1)){
 			std::string tempText=displayText;
@@ -61,6 +78,19 @@ void Textbox::Update(PixelGameEngine*pge){
 				WrapText(tempHeaderText,headerText,displayHeaderText,lastHeaderWordMarker,lastHeaderWord);
 			}
 			textboxMarker++;
+			if(dialogSound!=nullptr){
+				audioVolume=std::min(1.f,audioVolume+0.01f*2);
+				dialogSound->SetVolume(soundHandle,audioVolume);
+				audioFadeOutDelay=2;
+			}
+		}else{
+			if(dialogSound!=nullptr){
+				audioFadeOutDelay=std::max(0.f,audioFadeOutDelay-0.01f);
+				if(audioFadeOutDelay<=0){
+					audioVolume=std::max(0.f,audioVolume-0.01f*2);
+					dialogSound->SetVolume(soundHandle,audioVolume);
+				}
+			}
 		}
 		maxSize.y=std::max(maxSize.y,float(pge->GetTextSizeProp(displayHeaderText).y+pge->GetTextSizeProp(displayText).y));
 		lastLetterTime=letterDisplayDelay;
@@ -70,29 +100,46 @@ void Textbox::Update(PixelGameEngine*pge){
 
 void Textbox::Draw(PixelGameEngine*pge,Resources&resources,std::map<Image,std::unique_ptr<Renderable>>&IMAGES,int totalUsedMemory,int memoryLimit){
 	if(visible){
-		geom2d::rect<float>boxRect={pos-vf2d{3,3},maxSize+vf2d{6,6}};
+		geom2d::rect<float>boundingRect={pos-vf2d{3,3},maxSize+vf2d{6,6}};
 		if(resourceCost.size()>0){
-			boxRect.size.x+=36;
-			boxRect.size.y=std::max(36.f,boxRect.size.y);
+			boundingRect.size.x+=36;
+			boundingRect.size.y=std::max(36.f,boundingRect.size.y);
+		}
+		if(boxImg!=nullptr){
+			boundingRect.size.x+=26;
+		}
+		if(boundingRect.bottom().start.y>=pge->ScreenHeight()){
+			boundingRect.pos-={0,boundingRect.bottom().start.y-pge->ScreenHeight()};
+		}
+		if(boundingRect.right().start.x>=pge->ScreenWidth()){
+			boundingRect.pos-={boundingRect.right().start.x-pge->ScreenWidth(),0};
+		}
+		if(boundingRect.top().start.y<0){
+			boundingRect.pos+={0,-boundingRect.top().start.y};
 		}
-		if(boxRect.bottom().start.y>=pge->ScreenHeight()){
-			boxRect.pos-={0,boxRect.bottom().start.y-pge->ScreenHeight()};
+		if(boundingRect.left().start.x<0){
+			boundingRect.pos+={-boundingRect.left().start.x,0};
 		}
-		if(boxRect.right().start.x>=pge->ScreenWidth()){
-			boxRect.pos-={boxRect.right().start.x-pge->ScreenWidth(),0};
+		geom2d::rect<float>textboxRect=boundingRect;
+		if(boxImg!=nullptr){
+			textboxRect.pos.x+=26;
+			textboxRect.size.x-=50;
 		}
-		if(boxRect.top().start.y<0){
-			boxRect.pos+={0,-boxRect.top().start.y};
+		pge->FillRectDecal(boundingRect.pos,maxSize+vf2d{6,6},backCol);
+		pge->DrawRectDecal(boundingRect.pos+vf2d{1,1},maxSize+vf2d{4,4},WHITE);
+		pge->DrawDecal(boundingRect.pos+vf2d{3,3},IMAGES[MATRIX]->Decal(),{0.375,0.375},DARK_GREY);
+		if(boxImg!=nullptr){
+			pge->DrawDecal(boundingRect.pos+vf2d{3,3},boxImg->Decal());
 		}
-		if(boxRect.left().start.x<0){
-			boxRect.pos+={-boxRect.left().start.x,0};
+		pge->DrawRectDecal(boundingRect.pos+vf2d{3,3},{24,24},YELLOW);
+		pge->DrawShadowStringPropDecal(textboxRect.pos+vf2d{3,3},displayHeaderText,{245, 218, 66});
+		pge->DrawShadowStringPropDecal(textboxRect.pos+vf2d{3.f,float(3+pge->GetTextSizeProp(displayHeaderText).y)},displayText,{220,220,220});
+		if(textboxMarker==int(text.length()-1)){
+			std::string continueText="Click to Continue";
+			pge->DrawShadowStringPropDecal(textboxRect.pos+textboxRect.size-vf2d(pge->GetTextSizeProp(continueText))*vf2d{0.6,1}-vf2d{5,-9},continueText,{255,255,255,uint8_t(abs(sin(2*continueWordTimer))*255)},{0,0,0,uint8_t(abs(sin(2*continueWordTimer))*255)},{0.6,1});
 		}
-		pge->FillRectDecal(boxRect.pos,maxSize+vf2d{6,6},backCol);
-		pge->DrawRectDecal(boxRect.pos+vf2d{1,1},maxSize+vf2d{4,4},WHITE);
-		pge->DrawShadowStringPropDecal(boxRect.pos+vf2d{3,3},displayHeaderText,{245, 218, 66});
-		pge->DrawShadowStringPropDecal(boxRect.pos+vf2d{3.f,float(3+pge->GetTextSizeProp(displayHeaderText).y)},displayText,{220,220,220});
 		if(resourceCost.size()>0){
-			geom2d::rect<float>resourceBoxRect={boxRect.pos+vf2d{6+maxSize.x,0},{36,42}};
+			geom2d::rect<float>resourceBoxRect={textboxRect.pos+vf2d{6+maxSize.x,0},{36,42}};
 			pge->FillRectDecal(resourceBoxRect.pos,resourceBoxRect.size,backCol);
 			pge->DrawRectDecal(resourceBoxRect.pos+vf2d{1,1},resourceBoxRect.size-vf2d{2,2},WHITE);
 			vf2d contentPos=resourceBoxRect.pos+vf2d{3,3};

olcCodeJam2023Entry/Textbox.h

@@ -9,12 +9,18 @@ class Textbox{
 	std::string displayHeaderText="";
 	std::string text="";
 	std::string displayText="";
+	Renderable*boxImg;
+	Audio*dialogSound;
+	int soundHandle=-1;
+	float audioFadeOutDelay=2;
 	vf2d pos={};
 	vf2d maxSize={};
+	float audioVolume=0;
 	float lastLetterTime=0;
 	float letterDisplayDelay=0.01;
 	int textboxMarker=-1;
 	int lastWordMarker=-1;
+	float continueWordTimer=0;
 	std::string lastWord="";
 	int lastHeaderWordMarker=-1;
 	std::string lastHeaderWord="";
@@ -23,7 +29,7 @@ class Textbox{
 	Pixel backCol=CONSTANT::MESSAGE_BOX_DEFAULT_BACKCOL;
 public:
 	Textbox();
-	void Initialize(std::string text,vf2d pos={},std::string headerText="",vf2d maxSize={120,1},std::vector<Memory>resourceCost={},float letterDisplayDelay=0.01);
+	void Initialize(std::string text,vf2d pos={},std::string headerText="",Renderable*boxImg=nullptr,vf2d maxSize={120,1},Audio*dialogSound=nullptr,std::vector<Memory>resourceCost={},float letterDisplayDelay=0.01);
 
 	void UpdateAndDraw(vf2d pos,PixelGameEngine*pge,Resources&resources,std::map<Image,std::unique_ptr<Renderable>>&IMAGES,int totalUsedMemory,int memoryLimit);
 	std::string&GetCurrentString();

olcCodeJam2023Entry/Unit.cpp

@@ -483,7 +483,7 @@ void Unit::Draw(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderab
 
 void Unit::DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES){}
 
-void Unit::_DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES){
+void Unit::_DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES,bool unitMetersGreyedOut){
 	DrawHud(game,IMAGES);
 	int initialBarX=ghostPos.x-GetMemorySize()/2*CONSTANT::BAR_SQUARE_SIZE.x-CONSTANT::BAR_SQUARE_SIZE.x/2;
 	int initialBarY=ghostPos.y-CONSTANT::BAR_SQUARE_SIZE.y-img.Sprite()->height/2-2;
@@ -495,16 +495,16 @@ void Unit::_DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Rend
 			col=CONSTANT::HEALTH_COLOR;
 		}
 		if(range.index==i&&range.size>0){
-			col=CONSTANT::RANGE_COLOR;
+			col=unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::RANGE_COLOR;
 		}
 		if(atkSpd.index==i&&atkSpd.size>0){
-			col=CONSTANT::ATKSPD_COLOR;
+			col=unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::ATKSPD_COLOR;
 		}
 		if(moveSpd.index==i&&moveSpd.size>0){
-			col=CONSTANT::MOVESPD_COLOR;
+			col=unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::MOVESPD_COLOR;
 		}
 		if(procedure.index==i&&procedure.size>0){
-			col=CONSTANT::PROCEDURE_COLOR;
+			col=unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::PROCEDURE_COLOR;
 		}
 	};
 
@@ -514,19 +514,19 @@ void Unit::_DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Rend
 	}
 	if(GetAtkSpd()>0){
 		game.FillRectDecal(vf2d{float(initialBarX)+atkSpd.index*CONSTANT::BAR_SQUARE_SIZE.x,
-			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*atkSpd.size-1,2},CONSTANT::ATKSPD_COLOR);
+			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*atkSpd.size-1,2},unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::ATKSPD_COLOR);
 	}
 	if(GetMoveSpd()>0){
 		game.FillRectDecal(vf2d{float(initialBarX)+moveSpd.index*CONSTANT::BAR_SQUARE_SIZE.x,
-			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*moveSpd.size-1,2},CONSTANT::MOVESPD_COLOR);
+			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*moveSpd.size-1,2},unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::MOVESPD_COLOR);
 	}
 	if(GetProcedure()>0){
 		game.FillRectDecal(vf2d{float(initialBarX)+procedure.index*CONSTANT::BAR_SQUARE_SIZE.x,
-			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*procedure.size-1,2},CONSTANT::PROCEDURE_COLOR);
+			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*procedure.size-1,2},unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::PROCEDURE_COLOR);
 	}
 	if(GetRange()>0){
 		game.FillRectDecal(vf2d{float(initialBarX)+range.index*CONSTANT::BAR_SQUARE_SIZE.x,
-			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*range.size-1,2},CONSTANT::RANGE_COLOR);
+			float(initialBarY)}-vf2d{0,1},CONSTANT::BAR_SQUARE_SIZE+vf2d{CONSTANT::BAR_SQUARE_SIZE.x*range.size-1,2},unitMetersGreyedOut?VERY_DARK_GREY:CONSTANT::RANGE_COLOR);
 	}
 	
 	for(int i=0;i<GetMemorySize();i++){

olcCodeJam2023Entry/Unit.h

@@ -54,7 +54,7 @@ public:
 	virtual void Attack(Unit&victim,std::vector<std::shared_ptr<Unit>>&otherUnits)=0;
 	virtual void Draw(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES);
 	virtual void DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES);
-	void _DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES);
+	void _DrawHud(TileTransformedView&game,std::map<Image,std::unique_ptr<Renderable>>&IMAGES,bool unitMetersGreyedOut);
 	virtual void OnDeath(std::map<Sound,std::unique_ptr<Audio>>&SOUNDS);
 	bool IsFriendly();
 	bool IsSelected();

olcCodeJam2023Entry/VirusAttack.cpp

@@ -62,6 +62,8 @@ void VirusAttack::InitializeImages(){
 	LoadImage(GUIDE,"assets/guide.png");
 	LoadImage(ROUND_BAR,"assets/round_bar.png");
 	LoadImage(SEGMENT_BAR,"assets/segmentBar.png",false,false);
+	LoadImage(HOODED_FIGURE,"assets/hooded_figure.png");
+	LoadImage(SPOOK_HOODED_FIGURE,"assets/spook_hooded_figure.png");
 }
 
 void VirusAttack::InitializeLevelData(){
@@ -144,6 +146,7 @@ bool VirusAttack::OnUserCreate(){
 	testBox.SetVisible(false);
 	memoryAllocatorBox.Initialize(CONSTANT::MEMORY_ALLOCATOR_BOX_DISPLAY_STRING,{},CONSTANT::MEMORY_ALLOCATOR_BOX_HEADER_STRING);
 	memoryAllocatorBox.SetVisible(false);
+	platformCreationBox.SetVisible(false);
 
 	IMAGES[MINIMAP_OUTLINE]=std::make_unique<Renderable>();
 	IMAGES[MINIMAP_OUTLINE]->Create(64,64);
@@ -160,7 +163,7 @@ bool VirusAttack::OnUserCreate(){
 	InitializeLevelData();
 
 	LoadLevel(STAGE1);
-
+	currentLevel->scenario->Start();
 	return true;
 }
 
@@ -243,6 +246,9 @@ void VirusAttack::InitializeGUIs(){
 	refresherButton=new QuickGUI::ImageButton(platformCreationList,*IMAGES[REFRESHER],{0.25,0.25},{float(ScreenWidth()-48),48.f+32*1},{20,20});
 	turretButton=new QuickGUI::ImageButton(platformCreationList,*IMAGES[TURRET],{0.25,0.25},{float(ScreenWidth()-48),48.f+32*2},{20,20});
 	memoryGuardButton=new QuickGUI::ImageButton(platformCreationList,*IMAGES[MEMORY_GUARD],{0.25,0.25},{float(ScreenWidth()-48),48.f+32*3},{20,20});
+
+	unitCreationList.DisplayAllControls(false);
+	platformCreationList.DisplayAllControls(false);
 }
 
 void VirusAttack::InitializeScenarios(){
@@ -264,6 +270,7 @@ void VirusAttack::InitializeSounds(){
 	LoadSound(Sound::COSMOS,"cosmos.mp3");
 	LoadSound(Sound::BOSS1,"boss1.mp3");
 	LoadSound(Sound::BOSS2,"boss2.mp3");
+	LoadSound(Sound::VOICEOVER,"voice.mp3");
 }
 
 bool VirusAttack::UnitCreationClickHandled(){
@@ -296,7 +303,7 @@ bool VirusAttack::UnitCreationClickHandled(){
 #define EnableAndHoverCheck(UnitClass,Button,box) \
 	Button->Enable(CanAfford(player_resources,UnitClass::resourceCost)); \
 	if(Button->bHover){ \
-		box.Initialize(UnitClass::unitDescription, GetMousePos(), UnitClass::unitName,{120,36},UnitClass::resourceCost); \
+		box.Initialize(UnitClass::unitDescription, GetMousePos(), UnitClass::unitName,nullptr,{120,36},nullptr,UnitClass::resourceCost); \
 		hovering=true; \
 		if(CanAfford(player_resources,UnitClass::resourceCost)){ \
 			box.SetBackgroundColor(CONSTANT::MESSAGE_BOX_DEFAULT_BACKCOL); \
@@ -657,22 +664,17 @@ void VirusAttack::RenderCollectionPoints(CollectionPoint*cp){
 
 bool VirusAttack::OnUserUpdate(float fElapsedTime){
 	UpdateMatrixTexture(fElapsedTime);
-	HandleDraggingSelection();
-	HandleRightClickMove();
-	HandlePanAndZoom(fElapsedTime);
-	HandleMinimapClick();
+	if(playerInControl){
+		HandleDraggingSelection();
+		HandleRightClickMove();
+		HandlePanAndZoom(fElapsedTime);
+		HandleMinimapClick();
+	}
 	currentLevel->scenario->_Update();
 	AL.vecPos=game.ScreenToWorld(GetScreenSize()/2);
 	AL.fSoundFXVolume=std::min(1.f,game.GetWorldScale().x);
 	AL.OnUserUpdate(fElapsedTime);
 
-	if(GetKey(P).bPressed){
-		LoadLevel(STAGE1);
-	}
-	if(GetKey(O).bPressed){
-		LoadLevel(STAGE2);
-	}
-
 	for(auto&tile:TileManager::visibleTiles){
 		tile.second-=fElapsedTime;
 	}
@@ -760,7 +762,7 @@ bool VirusAttack::OnUserUpdate(float fElapsedTime){
 	std::erase_if(resourceGainIcons,[](ResourceGainIcon&icon){return icon.lifetime<=0;});
 
 	for(auto&u:units){
-		u->_DrawHud(game,IMAGES);
+		u->_DrawHud(game,IMAGES,unitMetersGreyedOut);
 	}
 
 	DrawSelectionRectangle();

olcCodeJam2023Entry/VirusAttack.h

@@ -84,6 +84,8 @@ private:
 	float memoryDisplayDelay=0;
 	bool memoryIncreased=true;
 	float memoryChangeTimer=2;
+	bool unitMetersGreyedOut=false; //If true, all but health meters show up as dark grey.
+	bool playerInControl=true;
 
 	vf2d randomBackgroundOffset;
 

olcCodeJam2023Entry/olcPGEX_AudioSource.h

@@ -104,7 +104,7 @@ public:
 	// Instruct Audio Listener to load this sound (if not loaded already)
 	void LoadAudioSample(int ID, const char* fileName);
 
-	void PlayCentered(float speed = 1.0f, float vol = 1.0f, bool looping = false, bool paused = false);
+	int PlayCentered(float speed = 1.0f, float vol = 1.0f, bool looping = false, bool paused = false);
 
 	// Play the Audio Sample, with given parameters
 	int Play(vf2d pos, float speed = 1.0f, float vol = 1.0f, bool looping = false, bool paused = false);
@@ -122,6 +122,7 @@ public:
 
 	// Adjust Volume
 	void SetVolume(float vol, float minVol = 0.0f, float maxVol = 1.0f);
+	void SetVolume(int handle,float vol);
 
 	// Set Default Parameters
 	void SetDefaults(float speed, float vol, float minVol, float maxVol, bool looping);
@@ -140,7 +141,7 @@ void olcPGEX_AudioSource::LoadAudioSample(int ID, const char* fileName)
 	AL->LoadAudioSample(ID, fileName);
 }
 
-void olcPGEX_AudioSource::PlayCentered(float speed, float vol, bool looping, bool paused)
+int olcPGEX_AudioSource::PlayCentered(float speed, float vol, bool looping, bool paused)
 {
 	// Set parameters
 	fPlaySpeed = speed;
@@ -158,6 +159,7 @@ void olcPGEX_AudioSource::PlayCentered(float speed, float vol, bool looping, boo
 
 	// Update Play status
 	bIsPlaying = true;
+	return handle;
 }
 
 int olcPGEX_AudioSource::Play(vf2d pos, float speed, float vol, bool looping, bool paused)
@@ -231,6 +233,15 @@ void olcPGEX_AudioSource::ModulateAudio(float minPlaySpeed, float maxPlaySpeed,
 		AL->soloud.setRelativePlaySpeed(handle, fPlaySpeed);
 }
 
+void olcPGEX_AudioSource::SetVolume(int handle,float vol)
+{
+	// Set volume
+	fVolume = vol;
+
+	// Instruct the Audio Listener to apply the volume change
+	AL->soloud.setVolume(handle, fVolume);
+}
+
 void olcPGEX_AudioSource::SetVolume(float vol, float minVol, float maxVol)
 {
 	// Set volume