Settings are now loaded from and saved to the config.json file. Reworked the UI structure a bit (the script that manage the settings have to be active before the UI is opened to actually take effect at game startup). Fixed several UI bugs (slider deselection, UI labels blocking the sliders, etc).

Assets/_PROJECT/Components/NewHandPresence/Prefabs/XROrigin Scripts/AbstractSlider.cs

@@ -0,0 +1,112 @@
+using System.Collections;
+using System.Collections.Generic;
+using TMPro;
+using UnityEngine;
+using UnityEngine.EventSystems;
+
+abstract public class AbstractSlider : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler
+{
+
+    public RectTransform sliderBackground; // Assign in Inspector
+    public float minValue = 0f;
+    public float maxValue = 1f;
+    public float slideareaOffsetMultiplier = 0.9f;
+    public float CurrentValue { get; private set; }
+    public float CurrentNormalizedValue { get; private set; }
+
+    private RectTransform handleRect;
+    private Vector2 backgroundStart;
+    private float backgroundWidth;
+
+    public System.Action<float, bool> OnValueChanged;
+
+    private void OnEnable()
+    {
+        if (null == handleRect)
+        {
+            handleRect = GetComponent<RectTransform>();
+        }
+
+        if (sliderBackground != null)
+        {
+            backgroundStart = sliderBackground.position;
+            backgroundWidth = sliderBackground.rect.width;
+        }
+
+        UpdateHandlePosition();
+    }
+
+    virtual public void OnBeginDrag(PointerEventData eventData)
+    {
+        UpdateSlider(eventData);
+    }
+
+    virtual public void OnDrag(PointerEventData eventData)
+    {
+        UpdateSlider(eventData);
+    }
+
+    virtual public void OnEndDrag(PointerEventData eventData)
+    {
+        UpdateSlider(eventData, true);
+        EventSystem.current.SetSelectedGameObject(null);
+    }
+
+    virtual public void SetHandleValue(float unnormalizedValue)
+    {
+        SetValuesFromValue(unnormalizedValue);
+        UpdateHandlePosition();
+    }
+
+    virtual public void SetHandleNormalizedValue(float normalizedValue)
+    {
+        SetValuesFromNormalizedValue(normalizedValue);
+        UpdateHandlePosition();
+    }
+
+    virtual protected void UpdateHandlePosition()
+    {
+        if (null == handleRect) return; // The options menu might not be opened yet
+
+        float halfWidth = sliderBackground.rect.width * 0.5f;
+        float limit = halfWidth * slideareaOffsetMultiplier;
+
+        float x = Mathf.Lerp(-limit, limit, CurrentNormalizedValue);
+        handleRect.localPosition = new Vector3(x, handleRect.localPosition.y, 0);
+    }
+
+    virtual protected void UpdateSlider(PointerEventData eventData, bool draggingEnded = false)
+    {
+        Vector2 localPoint;
+        RectTransformUtility.ScreenPointToLocalPointInRectangle(sliderBackground, eventData.position, eventData.pressEventCamera, out localPoint);
+        float halfWidth = sliderBackground.rect.width * 0.5f;
+
+        // Only allow dragging within 90% of the slider width, centered
+        float limit = halfWidth * slideareaOffsetMultiplier;
+        float clampedX = Mathf.Clamp(localPoint.x, -limit, limit);
+
+
+        Vector3 newPosition = new Vector3(clampedX, handleRect.localPosition.y, handleRect.localPosition.z);
+        handleRect.localPosition = newPosition;
+
+        // Normalize within the limited 90% range
+        float normalized = (clampedX + limit) / (limit * 2f);
+        SetValuesFromValue(Mathf.Lerp(minValue, maxValue, normalized));
+        
+        OnValueChanged?.Invoke(CurrentValue, draggingEnded);
+
+    }
+
+    protected void SetValuesFromNormalizedValue(float normalizedValue)
+    {
+        CurrentNormalizedValue = normalizedValue;
+        CurrentValue = CurrentNormalizedValue * (maxValue - minValue) + minValue;
+    }
+
+    protected void SetValuesFromValue(float unnormalizedValue)
+    {
+        CurrentValue = unnormalizedValue;
+        CurrentNormalizedValue = (CurrentValue - minValue) / (maxValue - minValue);
+    }
+
+}