add volume mixer

Assets/Scripts/Management/SoundSettingManager.cs

@@ -1,9 +1,12 @@
 using UnityEngine;
+using UnityEngine.Audio;
 using UnityEngine.SceneManagement;
 using UnityEngine.UI;
 
 public class SoundSettingManager : MonoBehaviour
 {
+    public AudioMixer audioMixer;
+
     float masterVolume;
     float musicVolume;
     float sfxVolume;
@@ -28,21 +31,40 @@ public void ReloadReferences()
         MasterSlider.onValueChanged.AddListener(OnMasterValueChanged);
         SfxSlider.onValueChanged.AddListener(OnSfxValueChanged);
         MusicSlider.onValueChanged.AddListener(OnMusicValueChanged);
+
+        MasterSlider.value = masterVolume;
+        SfxSlider.value = sfxVolume;
+        MusicSlider.value = musicVolume;
     }
 
     public void OnMasterValueChanged(float newValue)
     {
         masterVolume = newValue;
+        SetVolumeFloat(newValue, "MasterVolume");
     }
 
     public void OnSfxValueChanged(float newValue)
     {
         sfxVolume = newValue;
+        SetVolumeFloat(newValue, "SFXVolume");
     }
 
     public void OnMusicValueChanged(float newValue)
     {
         musicVolume = newValue;
+        SetVolumeFloat(newValue, "MusicVolume");
+    }
+
+    private void SetVolumeFloat(float sliderVal, string mixerGroup)
+    {
+        // Convert linear 0-1 to dB (-80 to 0 range)
+        float dbValue = Mathf.Log10(sliderVal) * 20;
+        if (sliderVal == 0)
+        {
+            dbValue = -80;
+        }
+        
+        audioMixer.SetFloat(mixerGroup, dbValue);
     }
 
     #region Sound Settings Data Save/Load
@@ -55,10 +77,18 @@ public void SaveSoundSettingsData(ref SoundSettingSaveData data)
 
     public void LoadSoundSettingsData(SoundSettingSaveData data)
     {
-       musicVolume = data.musicVolume;
-       sfxVolume = data.sfxVolume;
-       masterVolume = data.masterVolume;
-    }
+        musicVolume = data.musicVolume;
+        sfxVolume = data.sfxVolume;
+        masterVolume = data.masterVolume;
+
+        MasterSlider.value = masterVolume;
+        SfxSlider.value = sfxVolume;
+        MusicSlider.value = musicVolume;
+
+        SetVolumeFloat(masterVolume, "MasterVolume");
+        SetVolumeFloat(musicVolume, "MusicVolume");
+        SetVolumeFloat(sfxVolume, "SFXVolume");
+    } 
     #endregion
 }