RuinAdventurer/Scripts/Core/SoundManager.cs

using Godot;

public partial class SoundManager : Node
{
    private static SoundManager instance;

    [Export] private AudioStreamPlayer buttonSound;
    [Export] private AudioStreamPlayer miningSound;

    public override void _Ready()
    {
        instance = this;
    }

    public override void _ExitTree()
    {
        if (instance == this)
        {
            instance = null;
        }
    }

    public static void PlayButton()
    {
        if (instance == null || instance.buttonSound == null) return;

        instance.buttonSound.Play();
    }

    public static void PlayMining()
    {
        if (instance == null || instance.miningSound == null) return;

        instance.miningSound.Play();
    }

    public static void SetMasterVolume(float percent)
    {
        percent = Mathf.Clamp(percent, 0f, 1f);
        int busIndex = AudioServer.GetBusIndex("Master");
        AudioServer.SetBusVolumeDb(busIndex, Mathf.LinearToDb(percent));
        AudioServer.SetBusMute(busIndex, percent <= 0f);
    }
}