Implements several more moves

PkmnLib.Static/StatisticSet.cs

@@ -168,12 +168,24 @@ public record StatisticSet<T> : ImmutableStatisticSet<T>, IEnumerable<T>, IDeepC
                 Speed = Add(Speed, value);
                 break;
             default:
-                throw new ArgumentException("Invalid statistic.");
+                SetUnknownStat(stat, Add(GetUnknownStat(stat), value));
+                break;
         }
 
         return true;
     }
 
+    protected virtual T GetUnknownStat(Statistic stat)
+    {
+        throw new ArgumentException($"Invalid statistic {stat}");
+    }
+    
+    protected virtual void SetUnknownStat(Statistic stat, T value)
+    {
+        throw new ArgumentException($"Invalid statistic {stat}");
+    }
+    
+
     /// <summary>
     /// Decreases a statistic in the set by a value.
     /// </summary>
@@ -200,14 +212,15 @@ public record StatisticSet<T> : ImmutableStatisticSet<T>, IEnumerable<T>, IDeepC
                 Speed = Subtract(Speed, value);
                 break;
             default:
-                throw new ArgumentException("Invalid statistic.");
+                SetUnknownStat(stat, Subtract(GetUnknownStat(stat), value));
+                break;
         }
 
         return true;
     }
 
     /// <inheritdoc />
-    public IEnumerator<T> GetEnumerator()
+    public virtual IEnumerator<T> GetEnumerator()
     {
         yield return Hp;
         yield return Attack;
@@ -332,6 +345,47 @@ public record StatBoostStatisticSet : ClampedStatisticSet<sbyte>
         sbyte speed) : base(hp, attack, defense, specialAttack, specialDefense, speed)
     {
     }
+
+    /// <inheritdoc />
+    protected override sbyte GetUnknownStat(Statistic stat)
+    {
+        return stat switch
+        {
+            Statistic.Evasion => Evasion,
+            Statistic.Accuracy => Accuracy,
+            _ => throw new ArgumentException($"Invalid statistic {stat}"),
+        };
+    }
+
+    /// <inheritdoc />
+    /// <inheritdoc />
+    protected override void SetUnknownStat(Statistic stat, sbyte value)
+    {
+        switch (stat)
+        {
+            case Statistic.Evasion:
+                Evasion = value;
+                break;
+            case Statistic.Accuracy:
+                Accuracy = value;
+                break;
+            default:
+                throw new ArgumentException($"Invalid statistic {stat}");
+        }
+    }
+
+    /// <inheritdoc />
+    public override IEnumerator<sbyte> GetEnumerator()
+    {
+        yield return Hp;
+        yield return Attack;
+        yield return Defense;
+        yield return SpecialAttack;
+        yield return SpecialDefense;
+        yield return Speed;
+        yield return Evasion;
+        yield return Accuracy;
+    }
 }
 
 /// <summary>