Add BGM channel framework and setup audio event system.

Adventures in Lestoria/AdventuresInLestoria.cpp

@@ -150,6 +150,12 @@ AiL::AiL()
 		utils::datafile::Read(DATA,CONFIG_PATH + "class_directory"_S + cl + ".txt");
 	}
 
+	std::string BGM_CONFIG = CONFIG_PATH + "bgm_config"_S;
+	utils::datafile::Read(DATA,BGM_CONFIG);
+
+	std::string BGM_EVENTS_CONFIG = CONFIG_PATH + "event_config"_S;
+	utils::datafile::Read(DATA,BGM_EVENTS_CONFIG);
+
 	utils::datafile::DEBUG_ACCESS_OPTIONS="debug_access_options"_I;
 
 	sAppName = "GAME_NAME"_S;

Adventures in Lestoria/Audio.cpp

@@ -40,6 +40,47 @@ All rights reserved.
 #include "DEFINES.h"
 
 INCLUDE_game
+INCLUDE_DATA
+
+void Audio::Initialize(){
+	Audio&instance=game->audioEngine;
+	for(auto&[key,data]:DATA["Events"]){
+		instance.events.insert(key);
+	}
+	for(auto&[songName,data]:DATA["BGM"]){
+		int channelCounter=0;
+
+		BGM&bgm=instance.bgm[songName];
+
+		bgm.SetName(data["Track Name"].GetString());
+
+		while(data.HasProperty(std::format("channel[{}]",channelCounter))){
+			bgm.AddChannel(data[std::format("channel[{}]",channelCounter)].GetString());
+			channelCounter++;
+		}
+
+		if(!data.HasProperty("Default Volume"))ERR(std::format("WARNING! Track {} does not have a Default Volume parameter!",bgm.GetName()));
+		if(data["Default Volume"].GetValueCount()!=bgm.GetChannelCount())ERR(std::format("WARNING! Default Volume parameters do not match channel count. {} != {}",data["Default Volume"].GetValueCount(),bgm.GetChannelCount()));
+		
+		VolumeList volumes;
+		for(int i=0;i<data["Default Volume"].GetValueCount();i++){
+			volumes.push_back(data["Default Volume"].GetInt(i));
+		}
+		bgm.AddEventVolumes("Default Volume",volumes);
+
+		if(data.HasProperty("Fade Time"))bgm.SetFadeTime(data["Fade Time"].GetReal());
+
+		if(data.HasProperty("Events")){
+			for(auto&[eventName,data]:DATA["Events"]){
+				VolumeList volumes;
+				for(int i=0;i<data.GetValueCount();i++){
+					volumes.push_back(data.GetInt(i));
+				}
+				bgm.AddEventVolumes(eventName,volumes);
+			}
+		}
+	}
+}
 
 MiniAudio&Audio::Engine(){
 	return game->audioEngine.audioEngine;
@@ -52,6 +93,38 @@ void Audio::PlayBGM(const std::string_view sound,const bool loop=true){
 	Engine().Play(std::string(sound));	
 };
 
+void Audio::BGM::SetFadeTime(const float fadeTime){
+	this->fadeTime=fadeTime;
+}
+
+void Audio::BGM::AddEventVolumes(const Event&eventName,const VolumeList&volumes){
+	eventVolumes.AddEventInfo(eventName,volumes);
+}
+
+const size_t Audio::BGM::GetChannelCount()const{
+	return channelNames.size();
+}
+
+const SongName&Audio::BGM::GetName()const{
+	return songName;
+}
+
+void Audio::BGM::SetName(std::string_view name){
+	songName=name;
+}
+void Audio::BGM::AddChannel(const ChannelName&name){
+	channelNames.push_back(name);
+}
+
+const VolumeList&Audio::EventData::GetVolumes(const Event&event)const{
+	if(eventInfo.find(event)!=eventInfo.end())return eventInfo.at(event);
+	return eventInfo.at("Default Volume");
+}
+
+void Audio::EventData::AddEventInfo(const Event&eventName,const VolumeList&volumes){
+	eventInfo[eventName]=volumes;
+}
+
 std::string operator""_SFX(const char*key,size_t length){
 	return "sfx_directory"_S+std::string(key,length);
 }

Adventures in Lestoria/Audio.h

@@ -39,16 +39,42 @@ All rights reserved.
 #include "olcPGEX_MiniAudio.h"
 #include "config.h"
 
+using SongName=std::string;
+using Event=std::string;
+using ChannelName=std::string;
+using ChannelIDList=std::vector<int>;
+using VolumeList=std::vector<int>;
+
 class Audio{
+	class EventData{
+		std::map<Event,VolumeList>eventInfo;
+	public:
+		void AddEventInfo(const Event&eventName,const VolumeList&volumes);
+		const VolumeList&GetVolumes(const Event&event)const;
+	};
 	class BGM{
-		std::vector<int>channels;
+		std::string songName;
+		ChannelIDList channels;
+		std::vector<ChannelName>channelNames;
+		EventData eventVolumes;
+		float fadeTime="BGM.Default Fade Time"_F;
 		public:
-		Load();
-		Unload();
+		void Load();
+		void Unload();
+		const size_t GetChannelCount()const;
+		const SongName&GetName()const;
+		void SetName(std::string_view name);
+		void AddChannel(const ChannelName&name);
+		void AddEventVolumes(const Event&eventName,const VolumeList&volumes);
+		void SetFadeTime(const float fadeTime);
 	};
 	MiniAudio audioEngine;
+	SongName currentBGM;
+	std::map<SongName,BGM>bgm;
+	std::set<Event>events;
 public:
 	static MiniAudio&Engine();
+	static void Initialize();
 	static void Play(const std::string_view sound);
 	static void PlayBGM(const std::string_view sound,const bool loop=true);
 };

Adventures in Lestoria/TODO.txt

@@ -18,7 +18,7 @@ Settings Menu
 		-Upon pressing a key, check if the key is bound to another option, if so,
 			remove that bind from the list. Up to two keys may be binded per action.
 		-We have to save keybinds to the save file.
-
+-Smooth Movement
 
 January 31st
 ============
@@ -42,3 +42,5 @@ Story proofreading/correcting/storyboarding
 - Title Screen setpieces
 
 - Export/Import Save Files Online/Offline
+
+- Consider controls for fine-tuning music and how they sound during events.

Adventures in Lestoria/assets/config/bgm/bgm.txt

@@ -1,6 +1,12 @@
+BGM
+{
+	Default Fade Time = 1.0
+
 	#Song title followed by filenames for individual parts
 	foresty1_1
 	{
+		Track Name = Foresty
+
 		# High
 		channel[0]=foresty1_1_1.mp3
 		# Low
@@ -14,7 +20,7 @@ foresty1_1
 		Default Volume = 70%,50%,0%,0%
 
 		# Transition time between one phase to the next.
-	Fade Speed = 2.0
+		Fade Time = 2.0
 
 		Events
 		{
@@ -23,3 +29,4 @@ foresty1_1
 			Underwater = 0%,0%,100%,100%
 		}
 	}
+}

Adventures in Lestoria/olcUTIL_DataFile.h

@@ -488,10 +488,10 @@ namespace olc::utils
 		}
 
 		inline auto begin(){
-			return GetKeys().begin();
+			return GetOrderedKeys().begin();
 		}
 		inline auto end(){
-			return GetKeys().end();
+			return GetOrderedKeys().end();
 		}
 
 	private: