Avoiding Earrape by creating Volume Sliders in Unity

Published: 16 July 2021
on channel: The True Duck

318

Adding volume sliders to your unity projects is easy! By doing so, you also get access to many fun features!

Timestamps:
0:00 Intro
0:29 Audio Source Volume
1:35 Audio Mixer
3:02 C# Script
4:12 Exposing Parameters
4:38 Putting it all together
5:06 Decibels and Volume
6:53 Default Value
7:44 PlayerPrefs
9:22 Volume Percentage
10:51 Subscribe :)

Code:
using UnityEngine;
using UnityEngine.Audio;
using UnityEngine.UI;
using TMPro;

public class VolumeSliderController : MonoBehaviour
{
public string VolumeType = "MasterVolume";
public AudioMixer Mixer;
public Slider Slider;
public TextMeshProUGUI VolumeText;

public float Multiplier = 30f;
[Range(0, 1)] public float DefaultSliderPercentage = 0.75f;

private void Awake()
{
if (!PlayerPrefs.HasKey(VolumeType))
{
PlayerPrefs.SetFloat(VolumeType, DefaultSliderPercentage);
}

Slider.onValueChanged.AddListener(SliderValueChanged);

Slider.value = PlayerPrefs.GetFloat(VolumeType);
}

public void SliderValueChanged(float sliderValue)
{
Mixer.SetFloat(VolumeType, SliderToDecibel(sliderValue));

VolumeText.text = Mathf.Round(sliderValue * 100f) + "%";

PlayerPrefs.SetFloat(VolumeType, sliderValue);
PlayerPrefs.Save();
}

private float SliderToDecibel(float value)
{
return Mathf.Clamp(Mathf.Log10(value / DefaultSliderPercentage) * Multiplier, -80f, 20f);
}
}

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