add way to track values and when they changed

src/Modules/ValueTracker.cs

@@ -0,0 +1,37 @@
+namespace BetterAmongUs.Modules;
+
+/// <summary>
+/// Tracks a value and records the last time it was changed.
+/// </summary>
+/// <typeparam name="T">The type of value to track.</typeparam>
+internal sealed class ValueTracker<T>
+{
+    private T? _currentValue;
+    private T? _previousTrackedValue;
+    private float _lastChangeTime;
+
+    /// <summary>
+    /// Gets the current tracked value.
+    /// </summary>
+    public T? Value => _currentValue;
+
+    /// <summary>
+    /// Gets the time elapsed since the last value change.
+    /// </summary>
+    internal float TimeSinceLastChange => UnityEngine.Time.time - _lastChangeTime;
+
+    /// <summary>
+    /// Updates the tracked value if it differs from the current value.
+    /// </summary>
+    /// <param name="newValue">The new value to set.</param>
+    internal void Update(T newValue)
+    {
+        _currentValue = newValue;
+
+        if (!Equals(newValue, _previousTrackedValue))
+        {
+            _previousTrackedValue = newValue;
+            _lastChangeTime = UnityEngine.Time.time;
+        }
+    }
+}

src/Mono/ExtendedPlayerControl.cs

@@ -59,15 +59,19 @@ internal sealed class ExtendedPlayerControl : MonoBehaviour, IMonoExtension<Play
         }
     }
 
+    internal readonly ValueTracker<bool> InVentTracker = new();
+    private void Update()
+    {
+        if (_Player == null)
+            return;
+
+        InVentTracker.Update(_Player.inVent);
+    }
+
     private void OnDestroy()
     {
         this.UnregisterExtension();
     }
-
-    /// <summary>
-    /// Dictionary storing last name set for each player.
-    /// </summary>
-    internal readonly Dictionary<NetworkedPlayerInfo, string> NameSetLastFor = [];
 }
 
 /// <summary>