initialize repo

Lib/Civilization.Core/Grid/SquareGrid.cs

@@ -0,0 +1,46 @@
+using Civilization.Core.Interfaces;
+
+
+namespace Civilization.Core.Grid;
+
+public class SquareGrid : ITileGrid, IGridSize
+{
+    public int Width { get; }
+    public int Height { get; }
+    
+    private static readonly Vec2I[] NeighborOffsets = 
+    {
+        new Vec2I(-1, 0), // Left
+        new Vec2I(1, 0),  // Right
+        new Vec2I(0, -1), // Up
+        new Vec2I(0, 1)   // Down
+    };
+    
+    public SquareGrid(int width, int height)
+    {
+        Width = width;
+        Height = height;
+    }
+    
+    public IEnumerable<Vec2I> GetNeighbors(Vec2I tilePosition)
+    {
+        foreach (var offset in NeighborOffsets)
+        {
+            var neighbor = tilePosition + offset;
+            if (IsValidPosition(neighbor))
+                yield return neighbor;
+        }
+    }
+
+    public Vec2I ClampPosition(Vec2I position)
+    {
+        var x = Math.Clamp(position.X, 0, Width - 1);
+        var y = Math.Clamp(position.Y, 0, Height - 1);
+        return new Vec2I(x, y);
+    }
+
+    public bool IsValidPosition(Vec2I position)
+    {
+        return position.X >= 0 && position.X < Width && position.Y >= 0 && position.Y < Height;
+    }
+}