Work on item use/evolutions

PkmnLib.Dynamic/ScriptHandling/ItemScript.cs

@@ -46,12 +46,12 @@ public abstract class ItemScript : IDeepCloneable
     /// <summary>
     /// Returns whether the item can be held by a Pokémon.
     /// </summary>
-    public virtual bool IsHoldable => false;
+    public virtual bool IsHoldable => true;
 
     /// <summary>
     /// Returns whether the item can be held by the given target.
     /// </summary>
-    public virtual bool CanTargetHold(IPokemon pokemon) => false;
+    public virtual bool CanTargetHold(IPokemon pokemon) => true;
 
     /// <summary>
     /// Handles the use of the item.

PkmnLib.Dynamic/ScriptHandling/ScriptResolver.cs

@@ -12,6 +12,7 @@ public class ScriptResolver
     private IReadOnlyDictionary<(ScriptCategory, StringKey), Func<Script>> _scriptCtors;
     private IReadOnlyDictionary<StringKey, Func<IItem, ItemScript>> _itemScriptCtors;
     private readonly Dictionary<IItem, ItemScript> _itemBattleScripts = new();
+    private readonly Dictionary<IItem, ItemScript> _itemScripts = new();
 
     /// <inheritdoc cref="ScriptResolver"/>
     public ScriptResolver(IReadOnlyDictionary<(ScriptCategory, StringKey), Func<Script>> scriptCtors,
@@ -67,4 +68,32 @@ public class ScriptResolver
         _itemBattleScripts[item] = script;
         return true;
     }
+
+    /// <summary>
+    /// Try and resolve an item script for the given item. If the item does not have a script, return false.
+    /// </summary>
+    public bool TryResolveItemScript(IItem item, [MaybeNullWhen(false)] out ItemScript script)
+    {
+        if (_itemScripts.TryGetValue(item, out script))
+        {
+            return true;
+        }
+
+        var effect = item.Effect;
+        if (effect == null)
+        {
+            script = null;
+            return false;
+        }
+        if (!_itemScriptCtors.TryGetValue(effect.Name, out var scriptCtor))
+        {
+            script = null;
+            return false;
+        }
+
+        script = scriptCtor(item);
+        script.OnInitialize(effect.Parameters);
+        _itemScripts[item] = script;
+        return true;
+    }
 }