Bunch more moves, changes in how additional information for items works.

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/NaturalGift.cs

@@ -0,0 +1,60 @@
+using System.Collections.Generic;
+using PkmnLib.Static;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "natural_gift")]
+public class NaturalGift : Script
+{
+    /// <inheritdoc />
+    public override void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref byte basePower)
+    {
+        var naturalGiftData = GetNaturalGiftData(move.User.HeldItem);
+        if (naturalGiftData == null)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        basePower = (byte)naturalGiftData.Value.power;
+    }
+
+    /// <inheritdoc />
+    public override void ChangeMoveType(IExecutingMove move, IPokemon target, byte hit, ref TypeIdentifier moveType)
+    {
+        var naturalGiftData = GetNaturalGiftData(move.User.HeldItem);
+        if (naturalGiftData == null)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        var typeLibrary = move.User.Library.StaticLibrary.Types;
+        if (!typeLibrary.TryGetTypeIdentifier(naturalGiftData.Value.type, out var type))
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        moveType = type;
+    }
+
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        _ = move.User.RemoveHeldItem();
+    }
+
+    private static (int power, StringKey type)? GetNaturalGiftData(IItem? item)
+    {
+        if (item == null)
+            return null;
+        if (!item.AdditionalData.TryGetValue("naturalGift", out var data) ||
+            data is not IReadOnlyDictionary<string, object> dict)
+            return null;
+
+        if (dict.TryGetValue("power", out var power) && dict.TryGetValue("type", out var type))
+        {
+            return ((int)power, (StringKey)(string)type);
+        }
+        return null;
+    }
+}