increase room diversity, improve ui

Assets/Engine/Runtime/UI/PersistedSlider.cs

@@ -0,0 +1,35 @@
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace EscapeRoomEngine.Engine.Runtime.UI
+{
+    public class PersistedSlider : PersistedUI<int>
+    {
+        [SerializeField] private Slider slider;
+        [SerializeField] private Text label;
+
+        protected override void Start()
+        {
+            base.Start();
+
+            slider.wholeNumbers = true;
+
+            slider.onValueChanged.AddListener(value =>
+            {
+                Value = (int) value;
+                DisplayValue();
+                PlayerPrefs.SetInt(key, Value);
+                PlayerPrefs.Save();
+            });
+        }
+
+
+        protected override int RetrieveValue() => PlayerPrefs.GetInt(key, defaultValue);
+        
+        protected override void DisplayValue()
+        {
+            slider.value = Value;
+            label.text = Value.ToString();
+        }
+    }
+}