initialize repo

Lib/Civilization.Core/Vec2i.cs

@@ -0,0 +1,15 @@
+namespace Civilization.Core;
+
+public readonly struct Vec2I(int x, int y) : IEquatable<Vec2I>
+{
+    public int X { get; } = x;
+    public int Y { get; } = y;
+
+    public static Vec2I operator +(Vec2I a, Vec2I b) => new(a.X + b.X, a.Y + b.Y);
+    public static Vec2I operator -(Vec2I a, Vec2I b) => new(a.X - b.X, a.Y - b.Y);
+
+    public override string ToString() => $"({X}, {Y})";
+    public bool Equals(Vec2I other) => X == other.X && Y == other.Y;
+    public override bool Equals(object? obj) => obj is Vec2I other && Equals(other);
+    public override int GetHashCode() => HashCode.Combine(X, Y);
+}