PacManUdon/Assets/Scripts/SoundManager.cs

using UdonSharp;
using UnityEngine;
using VRC.SDKBase;
using VRC.Udon;

public class SoundManager : UdonSharpBehaviour
{
    [SerializeField] private AudioSource audioSourcePacMan;
    [SerializeField] private AudioSource audioSourceGhosts;
    [SerializeField] private AudioSource audioSourceExtraLife;

    [SerializeField] private AudioClip pacStart;
    [SerializeField] private AudioClip intermission;

    [SerializeField] private AudioClip pacDot1;
    [SerializeField] private AudioClip pacDot2;
    [SerializeField] private AudioClip pacDie1;
    [SerializeField] private AudioClip pacFruit;
    [SerializeField] private AudioClip pacCoin;
    [SerializeField] private AudioClip pacGhostEat;
    [SerializeField] private AudioClip pacGhostBlue;
    [SerializeField] private AudioClip pacGhostRetreat;
    [SerializeField] private AudioClip pacExtraLife;

    [SerializeField] private AudioClip siren0;
    [SerializeField] private AudioClip siren1;
    [SerializeField] private AudioClip siren2;
    [SerializeField] private AudioClip siren3;
    [SerializeField] private AudioClip siren4;

    private AudioClip _nextDotSound;
    private bool _ghostRetreating;
    private bool _ghostBlue;
    private int _ghostSoundLevel;
    private bool _currentlyPlayingSiren;

    private bool _suppress;

    public void Initialize()
    {
        Reset();
    }

    public void Reset()
    {
        StopAllSound();

        _nextDotSound = pacDot2;

        _ghostRetreating = false;
        _ghostBlue = false;
        _ghostSoundLevel = 0;
        _currentlyPlayingSiren = false;

        _suppress = true;
    }

    public void SuppressSound(bool suppress)
    {
        _suppress = suppress;

        if (suppress)
        {
            StopAllSound();
        }
    }

    public void PlayGameStartSound()
    {
        PlaySound(audioSourcePacMan, pacStart);
    }

    public void StartIntermissionSound()
    {
        PlaySound(audioSourcePacMan, intermission, true);
    }

    public void PlayPelletSound()
    {
        PlaySound(audioSourcePacMan, _nextDotSound);
        _nextDotSound = _nextDotSound == pacDot1 ? pacDot2 : pacDot1;
    }

    public void PlayDeathSound()
    {
        PlaySound(audioSourcePacMan, pacDie1);
    }

    public void PlayFruitSound()
    {
        PlaySound(audioSourcePacMan, pacFruit);
    }

    public void PlayCoinSound()
    {
        PlaySound(audioSourcePacMan, pacCoin);
    }

    public void PlayGhostEatSound()
    {
        PlaySound(audioSourcePacMan, pacGhostEat);
    }

    public void PlayExtraLifeSound()
    {
        PlaySound(audioSourceExtraLife, pacExtraLife);
    }

    public void StartGhostSound()
    {
        UpdateGhostSound();
    }

    public void SetGhostBlue(bool isBlue)
    {
        _ghostBlue = isBlue;
        UpdateGhostSound();
    }

    public void SetGhostRetreat(bool isRetreating)
    {
        _ghostRetreating = isRetreating;
        UpdateGhostSound();
    }

    public void StopAllSound()
    {
        audioSourcePacMan.Stop();
        audioSourceGhosts.Stop();
        // audioSourceExtraLife is not stopped on purpose, this sound is never interrupted
    }

    public void UpdatePelletCount(int pelletCount)
    {
        int level = 0;
        if (pelletCount < 16)
        {
            level = 4;
        } 
        else if (pelletCount < 32)
        {
            level = 3;
        }
        else if (pelletCount < 64)
        {
            level = 2;
        }
        else if (pelletCount < 128)
        {
            level = 1;
        }

        // Debug.Log($"UpdatePelletCount: {pelletCount}, level: {level}");

        if (_ghostSoundLevel >= level)
        {
            return;
        }

        _ghostSoundLevel = level;
        UpdateGhostSound();
    }

    private void PlaySound(AudioSource audioSource, AudioClip audioClip, bool loop = false)
    {
        // Debug.Log($"PlaySound, audioSource: {audioSource}, audioClip: {audioClip}, loop: {loop}, suppress: {_suppress}");
        if (_suppress)
        {
            return;
        }

        if (loop && audioSource.clip == audioClip && audioSource.isPlaying)
        {
            // Don't restart a looping sound
            return;
        }

        audioSource.clip = audioClip;
        audioSource.Play();
        audioSource.loop = loop;
    }

    private void SwitchSound(AudioSource audioSource, AudioClip audioClip, bool loop)
    {
        if (_suppress)
        {
            return;
        }

        if (audioSource.clip == audioClip)
        {
            // No need to switch
            return;
        }

        if (!audioSource.isPlaying || audioSource.clip == null)
        {
            PlaySound(audioSource, audioClip, loop);
        }

        var newTimeSamples = (int)(audioSource.timeSamples / (double)audioSource.clip.samples * audioClip.samples);

        audioSource.clip = audioClip;
        audioSource.timeSamples = newTimeSamples;

        audioSource.Play();
    }

    private void UpdateGhostSound()
    {
        if (_ghostRetreating)
        {
            PlaySound(audioSourceGhosts, pacGhostRetreat, true);
            _currentlyPlayingSiren = false;
            return;
        }

        if (_ghostBlue)
        {
            PlaySound(audioSourceGhosts, pacGhostBlue, true);
            _currentlyPlayingSiren = false;
            return;
        }

        var currentGhostLevelSound = GetSoundForGhostLevel(_ghostSoundLevel);
        if (_currentlyPlayingSiren)
        {
            SwitchSound(audioSourceGhosts, currentGhostLevelSound, true);
        }
        else
        {
            PlaySound(audioSourceGhosts, currentGhostLevelSound, true);
        }
        
        _currentlyPlayingSiren = true;
    }

    private AudioClip GetSoundForGhostLevel(int ghostLevel)
    {
        switch (ghostLevel)
        {
            case 1:
                return siren1;
            case 2: 
                return siren2;
            case 3:
                return siren3;
            case 4:
                return siren4;
            default:
                return siren0;
        };
    }
}