Jeremy/Assets/Scripts/MusicManager.cs

using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Serialization;

public class MusicManager : MonoBehaviour
{
    public enum Track
    {
        None,
        Cozy,
        CozyPlusTrash,
        Building,
        TurnAround,
        TurnAroundPlusJeremyLives,
        FinaleBuildUp,
    }

    private Track currentTrack = Track.None;
    private List<AudioSource> currentlyPlaying = new();

    [SerializeField]
    private AudioSource _CozySource;

    [FormerlySerializedAs("_TrashSource")]
    [SerializeField]
    private AudioSource _AdditiveTrashSource;

    [FormerlySerializedAs("_AdditiveBuildingSource")]
    [SerializeField]
    private AudioSource _BuildingSource;

    [SerializeField]
    private AudioSource _TurnAroundSource;

    [SerializeField]
    private AudioSource _AdditiveJeremyLivesSource;

    [SerializeField]
    private AudioSource _FinaleBuildUpSource;

    public void PlayMusicCozy()
    {
        currentTrack = Track.Cozy;
    }
    
    public void PlayMusicCozyPlusTrash()
    {
        currentTrack = Track.CozyPlusTrash;
    }
    
    public void PlayMusicBuilding()
    {
        currentTrack = Track.Building;
    }
    
    public void PlayMusicTurnAround()
    {
        currentTrack = Track.TurnAround;
    }
    
    public void PlayMusicTurnAroundPlusJeremyLives()
    {
        currentTrack = Track.TurnAroundPlusJeremyLives;
    }
    
    public void PlayMusicFinaleBuildUp()
    {
        currentTrack = Track.FinaleBuildUp;
    }
    
    
    public void PlayMusic(Track track)
    {
        currentTrack = track;
    }

    private void Update()
    {
        var fadeMultiplier = 0.2f;

        if (currentTrack is Track.CozyPlusTrash or Track.Cozy)
        {
            if (!_AdditiveTrashSource.isPlaying)
                _AdditiveTrashSource.Play();
            
            if(!_CozySource.isPlaying)
                _CozySource.Play();
        }
        else
        {
            if (_AdditiveTrashSource.volume == 0 && _AdditiveTrashSource.isPlaying)
                _AdditiveTrashSource.Stop();
            
            if (_CozySource.volume == 0 && _CozySource.isPlaying)
                _CozySource.Stop();
        }

        _AdditiveTrashSource.volume = currentTrack == Track.CozyPlusTrash ?
            Mathf.Clamp(_AdditiveTrashSource.volume + (fadeMultiplier * Time.deltaTime), 0, 1) :
            Mathf.Clamp(_AdditiveTrashSource.volume - (fadeMultiplier * Time.deltaTime), 0, 1);

        _CozySource.volume = currentTrack is Track.CozyPlusTrash or Track.Cozy ?
            Mathf.Clamp(_CozySource.volume + (fadeMultiplier * Time.deltaTime), 0, 1) :
            Mathf.Clamp(_CozySource.volume - (fadeMultiplier * Time.deltaTime), 0, 1);
        
        
        if(currentTrack == Track.Building)
        {
            if (!_BuildingSource.isPlaying)
                _BuildingSource.Play();
            
            _BuildingSource.volume = Mathf.Clamp(_BuildingSource.volume + (fadeMultiplier * Time.deltaTime), 0, 1);
        }
        else
        {
            _BuildingSource.volume = Mathf.Clamp(_BuildingSource.volume - (fadeMultiplier * Time.deltaTime), 0, 1);
            if (_BuildingSource.volume == 0 && _BuildingSource.isPlaying)
                _BuildingSource.Stop();
        }


        if (currentTrack == Track.TurnAround)
        {
            if (!_TurnAroundSource.isPlaying)
                _TurnAroundSource.Play();
            
            _TurnAroundSource.volume = Mathf.Clamp(_TurnAroundSource.volume + (fadeMultiplier * Time.deltaTime), 0, 1);
        }
        else
        {
            _TurnAroundSource.volume = Mathf.Clamp(_TurnAroundSource.volume - (fadeMultiplier * Time.deltaTime), 0, 1);
            if (_TurnAroundSource.volume == 0 && _TurnAroundSource.isPlaying)
                _TurnAroundSource.Stop();
        }
        
        if(currentTrack == Track.TurnAroundPlusJeremyLives)
        {
            if (!_AdditiveJeremyLivesSource.isPlaying)
                _AdditiveJeremyLivesSource.Play();
            
            _AdditiveJeremyLivesSource.volume = Mathf.Clamp(_AdditiveJeremyLivesSource.volume + (fadeMultiplier * Time.deltaTime), 0, 1);
        }
        else
        {
            _AdditiveJeremyLivesSource.volume = Mathf.Clamp(_AdditiveJeremyLivesSource.volume - (fadeMultiplier * Time.deltaTime), 0, 1);
            if (_AdditiveJeremyLivesSource.volume == 0 && _AdditiveJeremyLivesSource.isPlaying)
                _AdditiveJeremyLivesSource.Stop();
        }
        
        
        if(currentTrack == Track.FinaleBuildUp)
        {
            if (!_FinaleBuildUpSource.isPlaying)
                _FinaleBuildUpSource.Play();
            
            _FinaleBuildUpSource.volume = Mathf.Clamp(_FinaleBuildUpSource.volume + (fadeMultiplier * Time.deltaTime), 0, 1);
        }
        else
        {
            _FinaleBuildUpSource.volume = Mathf.Clamp(_FinaleBuildUpSource.volume - (fadeMultiplier * Time.deltaTime), 0, 1);
            if (_FinaleBuildUpSource.volume == 0 && _FinaleBuildUpSource.isPlaying)
                _FinaleBuildUpSource.Stop();
        }
            
    }
}