zfxaction25/DonkeysAndDroids.Godot/MusicManager.cs

using Godot;
using RobotAndDonkey.Game;
using RobotAndDonkey.Game.Board;
using RobotAndDonkey.Game.Modifiers;
using RobotAndDonkey.Game.Pois;
using System;
using System.Diagnostics;

public class MusicManager
{
    public enum ESong
    {
        MetaGame,
        Shop,
        CoreLoop,
        Scoring
    }

    public enum ESound
    {
        Energy,
        Carry,
        Delivery,
        TapeLength,
        Hand,
        Program,
        Card,
        Rest
    }

    public void Init(Main main)
    {
        m_Player1 = new() { Bus = "Music" };
        main.AddChild(m_Player1);

        m_Player2 = new() { Bus = "Music" };
        main.AddChild(m_Player2);

        m_SfxPlayer = new() { Bus = "Sfx" };
        main.AddChild(m_SfxPlayer);

        m_Tree = main.GetTree();
    }

    public void PlaySong(ESong song)
    {
        if (m_Song == song)
            return;

        var tween = m_Tree.CreateTween();
        tween.SetParallel();
        m_Song = song;
        if (m_CurrentPlayer)
            CrossFade(m_Player1, m_Player2, song, tween);
        else
            CrossFade(m_Player2, m_Player1, song, tween);
        m_CurrentPlayer = !m_CurrentPlayer;
    }
    
    private static void EnableLooping(AudioStream stream)
    {
        if (stream is AudioStreamOggVorbis ogg)
        {
            ogg.Loop = true;
        }
        else if (stream is AudioStreamMP3 mp3)
        {
            mp3.Loop = true;
        }
        else if (stream is AudioStreamWav wav)
        {
            wav.LoopMode = AudioStreamWav.LoopModeEnum.Forward;
        }
    }

    public void Play(EModifierId modifier)
    {
        m_SfxPlayer.Stream = ResourceLoader.Load<AudioStream>(modifier switch
        {
            EModifierId.Corrupt       => "uid://dnc8ksbbt8rxg",
            EModifierId.Unreliable    => "uid://b8cgqw2meefkw",
            EModifierId.RaceCondition => "uid://c5061hog183xe",
            EModifierId.Throttled     => "uid://djkcjn5niyhje",
            EModifierId.Effective     => "uid://7toyoaj4xv5t",
            EModifierId.Optimized     => "uid://cij77w63o5ahu",
            EModifierId.Efficient     => "uid://iccli4sklikc",
            EModifierId.Persistent    => "uid://bmkqvi2y64wxk",
            _                         => null
        });

        if (m_SfxPlayer.Stream != null)
            m_SfxPlayer.Play();
    }

    public void Play(ESound sound)
    {
        m_SfxPlayer.Stream = ResourceLoader.Load<AudioStream>(sound switch
        {
            ESound.Energy     => "uid://prjkw6o6m53s",
            ESound.Carry      => "uid://taabst8vqf07",
            ESound.Delivery   => "uid://cr7ajk4lac6e0",
            ESound.TapeLength => "uid://bvt2nl4geonil",
            ESound.Hand       => "uid://bu2tncw11cgqt",
            ESound.Program    => "uid://6cqu6nualhm2",
            ESound.Card       => "uid://b7508mnlvtm26",
            ESound.Rest       => "uid://bp1dme3dnek76",
            _                 => throw new ArgumentOutOfRangeException(nameof(sound), sound, null)
        });
        m_SfxPlayer.Play();
    }

    public void Play(ECellType cellType)
    {
        m_SfxPlayer.Stream = ResourceLoader.Load<AudioStream>(cellType switch
        {
            ECellType.Grass   => "uid://xc27unw7jisd",
            ECellType.Dry     => "uid://b1licxrv5a5kx",
            ECellType.Fertile => "uid://ufefxts5f0op",
            ECellType.Mud     => "uid://bkr83d0ylrgoh",
            ECellType.Blocked => "uid://fvia4q78bwmj",
            ECellType.Rocky   => "uid://c22k1uvleut6w",
            _                 => throw new ArgumentOutOfRangeException(nameof(cellType), cellType, null)
        });
        m_SfxPlayer.Play();
    }

    public void Play(Poi poi)
    {
        m_SfxPlayer.Stream = ResourceLoader.Load<AudioStream>(poi switch
        {
            Crate  => "uid://2g4nuqy03if5",
            Shed   => "uid://bv03vbh5us6ym",
            Tower  => "uid://dqolgkxab6gfy",
            Donkey => "uid://bg8eu2auayu2k",
            Avatar => "uid://nw8iofm1vaj8",
            _      => throw new NotImplementedException()
        });
        m_SfxPlayer.Play();
    }

    private void CrossFade(AudioStreamPlayer player1, AudioStreamPlayer player2, ESong song, Tween tween)
    {
        var stream = GetStream(song);
        EnableLooping(stream);
        player2.Stream = stream;
        player2.Play();
        tween.TweenProperty(player1, "volume_db", -80.0f, 1.0).SetEase(Tween.EaseType.In).SetTrans(Tween.TransitionType.Sine);
        tween.TweenProperty(player2, "volume_db", 0.0f, 1.0).SetEase(Tween.EaseType.Out).SetTrans(Tween.TransitionType.Expo);
    }

    private AudioStream GetStream(ESong song)
    {
        return ResourceLoader.Load<AudioStream>(song switch
        {
            ESong.MetaGame => "uid://bnrm544axjxoi",
            ESong.Shop     => "uid://62fyj028yf7w",
            ESong.CoreLoop => "uid://5w305h2two2l",
            ESong.Scoring  => "uid://b4qv7oicdvqg6",
            _              => throw new NotImplementedException()
        });
    }

    private bool m_CurrentPlayer;
    private AudioStreamPlayer m_Player1;
    private AudioStreamPlayer m_Player2;
    private AudioStreamPlayer m_SfxPlayer;

    private ESong m_Song = (ESong)(-1);
    private SceneTree m_Tree;
}