Cache created wrappers for pointers, so we can resolve them later.

PkmnLibSharp/Library/EffectParameter.cs

@@ -54,8 +54,7 @@ namespace PkmnLibSharp.Library
         }
 
 
-
-        internal override void DeletePtr()
+        protected override void DeletePtr()
         {
             Creatureliblibrary.Generated.EffectParameter.Destruct(Ptr);
         }

PkmnLibSharp/Library/Forme.cs

@@ -67,7 +67,6 @@ namespace PkmnLibSharp.Library
                 return _abilities;
             }
         }
-
         public ImmutableArray<string> HiddenAbilities
         {
             get
@@ -89,13 +88,25 @@ namespace PkmnLibSharp.Library
             }
         }
 
+        public LearnableMoves Moves
+        {
+            get
+            {
+                if (_moves != null) return _moves;
+                var movesPtr = SpeciesVariant.GetLearnableAttacks(Ptr);
+                if (!TryResolvePointer(movesPtr, out _moves))
+                {
+                    _moves = new LearnableMoves(movesPtr);
+                }
+                return _moves;
+            }
+        }
 
         public int GetPkmnType(int index)
         {
             return Types[index];
         }
 
-
         public static unsafe Forme Create(string name, float height, float weight, uint baseExperience, byte[] types,
             ushort baseHealth, ushort baseAttack, ushort baseDefense, ushort baseSpecialAttack,
             ushort baseSpecialDefense, ushort baseSpeed, string[] abilities, string[] hiddenAbilities,
@@ -125,7 +136,7 @@ namespace PkmnLibSharp.Library
         {
         }
 
-        internal override void DeletePtr()
+        protected override void DeletePtr()
         {
             SpeciesVariant.Destruct(Ptr);
         }

PkmnLibSharp/Library/LearnableMoves.cs

@@ -5,7 +5,7 @@ namespace PkmnLibSharp.Library
 {
     public class LearnableMoves : PointerWrapper
     {
-        private LearnableMoves(IntPtr ptr) : base(ptr)
+        internal LearnableMoves(IntPtr ptr) : base(ptr)
         {
         }
 
@@ -21,7 +21,7 @@ namespace PkmnLibSharp.Library
             LearnableAttacks.AddLevelAttack(Ptr, level, move.Ptr);
         }
 
-        internal override void DeletePtr()
+        protected override void DeletePtr()
         {
             LearnableAttacks.Destruct(Ptr);
         }

PkmnLibSharp/Library/MoveData.cs

@@ -50,7 +50,7 @@ namespace PkmnLibSharp.Library
         {
         }
 
-        internal override void DeletePtr()
+        protected override void DeletePtr()
         {
             AttackData.Destruct(Ptr);
         }

PkmnLibSharp/Library/Species.cs

@@ -20,7 +20,7 @@ namespace PkmnLibSharp.Library
             return new Species(ptr);
         }
 
-        internal override void DeletePtr()
+        protected override void DeletePtr()
         {
             PokemonSpecies.Destruct(Ptr);
         }

PkmnLibSharp/PointerWrapper.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Concurrent;
 
 namespace PkmnLibSharp
 {
@@ -7,16 +8,36 @@ namespace PkmnLibSharp
         internal readonly IntPtr Ptr;
         private bool _isDeleted = false;
 
+        private static readonly ConcurrentDictionary<IntPtr, WeakReference<object>> Cached =
+            new ConcurrentDictionary<IntPtr, WeakReference<object>>();
+
         protected PointerWrapper(IntPtr ptr)
         {
             Ptr = ptr;
+            var weakRef = new WeakReference<object>(this);
+            Cached.TryAdd(ptr, weakRef);
         }
 
-        internal abstract void DeletePtr();
+        internal static bool TryResolvePointer<T>(IntPtr p, out T result) where T : PointerWrapper
+        {
+            if (Cached.TryGetValue(p, out var val))
+            {
+                if (val.TryGetTarget(out var target))
+                {
+                    result = (T) target;
+                    return true;
+                }
+            }
+            result = null;
+            return false;
+        }
+
+        protected abstract void DeletePtr();
         public virtual void Dispose()
         {
             if (_isDeleted)
                 return;
+            Cached.TryRemove(Ptr, out _);
             DeletePtr();
             _isDeleted = true;
         }