Various cleanup

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

@@ -1,4 +1,5 @@
 using Chickensoft.Collections;
+using Godot;
 using System;
 using Zennysoft.Ma.Adapter;
 
@@ -49,7 +50,14 @@ public class AttackComponent : IAttackComponent
 
   public void RaiseMaximumAttack(int raiseAmount)
   {
-    _maximumAttack.OnNext(raiseAmount);
+    _maximumAttack.OnNext(_maximumAttack.Value + raiseAmount);
     Restore(raiseAmount);
   }
+
+  public void LowerMaximumAttack(int lowerAmount)
+  {
+    _maximumAttack.OnNext(Mathf.Max(_maximumAttack.Value + lowerAmount, 0));
+    if (_currentAttack.Value > _maximumAttack.Value)
+      _currentAttack.OnNext(_maximumAttack.Value);
+  }
 }