yep

Shogi.Domain/Direction.cs

@@ -0,0 +1,18 @@
+using System.Numerics;
+
+namespace Shogi.Domain
+{
+  public static class Direction
+  {
+    public static readonly Vector2 Up = new(0, 1);
+    public static readonly Vector2 Down = new(0, -1);
+    public static readonly Vector2 Left = new(-1, 0);
+    public static readonly Vector2 Right = new(1, 0);
+    public static readonly Vector2 UpLeft = new(-1, 1);
+    public static readonly Vector2 UpRight = new(1, 1);
+    public static readonly Vector2 DownLeft = new(-1, -1);
+    public static readonly Vector2 DownRight = new(1, -1);
+    public static readonly Vector2 KnightLeft = new(-1, 2);
+    public static readonly Vector2 KnightRight = new(1, 2);
+  }
+}