koobas.hobune.stream
Audio slider for multiple scenes.
Hello, I'm working on my first game project. I've made the main menu and I've added a slider for the volume. My problem is that the volume slider onlys work for main menu scene and I want to work with every scene but I don't know how to do that. Here's the code so far
public class VolumeValueChanger : MonoBehaviour
{
private AudioSource audioSrc;
[SerializeField] Slider volumeSlider;
private float musicVolume = 1f;
void Start()
{
audioSrc = GetComponent<AudioSource>();
}
void Awake()
{
if (PlayerPrefs.HasKey("Volume"))
{
SetVolume(PlayerPrefs.GetFloat("Volume"));
volumeSlider.value = PlayerPrefs.GetFloat("Volume");
}
}
void Update()
{
audioSrc.volume = musicVolume;
}
public void SetVolume(float vol)
{
musicVolume = vol;
PlayerPrefs.SetFloat("Volume", vol);
}
}
First of all, get rid of your script.
PlayerPrefsFloatLoader.cs
To be attached to any gameObject, preferably to your AudioSource
Add AudioSource > volume (dynamic) to the onValueLoaded event
Add Slider > value (dynamic) to the onValueLoaded event only in the main scene
Set the key to Volume
using UnityEngine;
using UnityEngine.Events;
[System.Serializable]
public class FloatEvent : UnityEvent<float> { }
public class PlayerPrefsFloatLoader : MonoBehaviour
{
[SerializeField] private string key;
[SerializeField] private float defaultValue = 0;
[SerializeField] private FloatEvent onValueLoaded;
private void Awake()
{
onValueLoaded.Invoke(PlayerPrefs.GetFloat(key, defaultValue));
}
}
PlayerPrefsFloatSaver.cs
To be attached to any gameObject, preferably to your Slider
Add PlayerPrefsSaver > SetFloat (dynamic) to the onValueChanged event of the Slider in the main scene
Add AudioSource > volume (dynamic) to the onValueChanged event of the Slider in the main scene
Set the key to Volume
using UnityEngine;
public class PlayerPrefsFloatSaver : MonoBehaviour
{
[SerializeField] private string key;
public void SetFloat(float value)
{
PlayerPrefs.SetFloat(key, value);
}
}
Right click on image > Open in new tab if it's too small for you to read
Since you are writing it in a PlayerPref, and I am assuming that you have another VolumeValueChanger in your other scene as well. Based on the above assumption you can Implement the SceneLoaded Event from Unity SceneManager and re-load the value from PlayerPrefs.
https://docs.unity3d.com/ScriptReference/SceneManagement.SceneManager-sceneLoaded.html
P.S. Two quick Solutions:
Make your object Don't Destroy On Load >> In order for it to Persist between scenes and retain its values.
Make a sound manager class, and make it Singleton that also doesn't destroy on load
More info in Don't Destroy On Load here: https://docs.unity3d.com/ScriptReference/Object.DontDestroyOnLoad.html
