before deleting Rules

Gameboard.ShogiUI.Rules/Pieces/Bishop.cs

@@ -0,0 +1,39 @@
+using PathFinding;
+using System.Collections.Generic;
+
+namespace Gameboard.ShogiUI.Rules.Pieces
+{
+  public class Bishop : Piece
+  {
+    private static readonly List<PathFinding.Move> Moves = new(4)
+    {
+      new PathFinding.Move(Direction.UpLeft, Distance.MultiStep),
+      new PathFinding.Move(Direction.UpRight, Distance.MultiStep),
+      new PathFinding.Move(Direction.DownLeft, Distance.MultiStep),
+      new PathFinding.Move(Direction.DownRight, Distance.MultiStep)
+    };
+    private static readonly List<PathFinding.Move> PromotedMoves = new(8)
+    {
+      new PathFinding.Move(Direction.Up),
+      new PathFinding.Move(Direction.Left),
+      new PathFinding.Move(Direction.Right),
+      new PathFinding.Move(Direction.Down),
+      new PathFinding.Move(Direction.UpLeft, Distance.MultiStep),
+      new PathFinding.Move(Direction.UpRight, Distance.MultiStep),
+      new PathFinding.Move(Direction.DownLeft, Distance.MultiStep),
+      new PathFinding.Move(Direction.DownRight, Distance.MultiStep)
+    };
+    public Bishop(WhichPlayer owner) : base(WhichPiece.Bishop, owner)
+    {
+      moveSet = new MoveSet(this, Moves);
+      promotedMoveSet = new MoveSet(this, PromotedMoves);
+    }
+
+    public override Piece DeepClone()
+    {
+      var clone = new Bishop(Owner);
+      if (IsPromoted) clone.Promote();
+      return clone;
+    }
+  }
+}