Refactor stats

Zennysoft.Game.Ma/src/Components/VTComponent.cs

@@ -0,0 +1,48 @@
+using Chickensoft.Collections;
+using System;
+using Zennysoft.Ma.Adapter;
+
+namespace Zennysoft.Game.Ma;
+
+public class VTComponent : IVTComponent
+{
+  public IAutoProp<int> CurrentVT => _currentVT;
+
+  public IAutoProp<int> MaximumVT => _maximumVT;
+
+  private readonly AutoProp<int> _currentVT;
+
+  private readonly AutoProp<int> _maximumVT;
+
+  public bool AtFullVT => CurrentVT.Value == MaximumVT.Value;
+
+  public VTComponent(int initialVT)
+  {
+    _maximumVT = new AutoProp<int>(initialVT);
+    _currentVT = new AutoProp<int>(initialVT);
+  }
+
+  public void Restore(int restoreAmount)
+  {
+    var cappedAmount = Math.Min(restoreAmount + _currentVT.Value, _maximumVT.Value);
+    _currentVT.OnNext(cappedAmount);
+  }
+
+  public void Reduce(int reduceAmount)
+  {
+    var cappedAmount = Math.Max(_currentVT.Value - reduceAmount, 0);
+    _currentVT.OnNext(cappedAmount);
+  }
+
+  public void SetVT(int vt)
+  {
+    var cappedAmount = Math.Min(vt, _maximumVT.Value);
+    _currentVT.OnNext(cappedAmount);
+  }
+
+  public void RaiseMaximumVT(int raiseAmount)
+  {
+    _maximumVT.OnNext(raiseAmount);
+    Restore(raiseAmount);
+  }
+}