More move scripts

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

@@ -0,0 +1,37 @@
+using System.Linq;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "sketch")]
+public class Sketch : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        // Defensive programming; If the move we're using is not the same as the one picked, something changed
+        // our move to sketch. This should never happen, as moves are not allowed to change to sketch, but in the
+        // case it does, we should fail the move.
+        if (move.ChosenMove.MoveData != move.UseMove)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        var moveSlot = move.User.Moves.IndexOf(move.ChosenMove);
+        if (moveSlot == -1)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+
+        var choiceQueue = move.Battle.PreviousTurnChoices;
+        var lastMove = choiceQueue.SelectMany(x => x).OfType<IMoveChoice>().LastOrDefault(x => x.User == target);
+        if (lastMove == null || lastMove.ChosenMove.MoveData.HasFlag("not_sketchable"))
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+
+        move.User.LearnMove(lastMove.ChosenMove.MoveData.Name, MoveLearnMethod.Sketch, (byte)moveSlot);
+    }
+}