Merged in better-communication (pull request #49)

Better communication

Shogi.Domain/Pathing/Direction.cs

@@ -0,0 +1,22 @@
+using System.Numerics;
+
+namespace Shogi.Domain.Pathing
+{
+  /// <summary>
+  /// Directions are relative to the perspective of Player 1.
+  /// Up points towards player 1. Down points towards player 2.
+  /// </summary>
+  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);
+  }
+}