Add Generation encapsulation

56_Life_for_Two/csharp/Generation.cs

@@ -0,0 +1,78 @@
+internal class Generation
+{
+    private readonly Board _board;
+
+    public Generation(Board board)
+    {
+        _board = board;
+        CountNeighbours();
+    }
+
+    public Board Board => _board;
+
+    public int Player1Count => _board.Player1Count;
+    public int Player2Count => _board.Player2Count;
+
+    public string? Result => 
+        (Player1Count, Player2Count) switch
+        {
+            (0, 0) => Strings.Draw,
+            (_, 0) => string.Format(Formats.Winner, 1),
+            (0, _) => string.Format(Formats.Winner, 2),
+            _ => null
+        };
+
+    public static Generation Create(IReadWrite io)
+    {
+        var board = new Board();
+
+        SetInitialPieces(1, coord => board.AddPlayer1Piece(coord));
+        SetInitialPieces(2, coord => board.AddPlayer2Piece(coord));
+
+        return new Generation(board);
+
+        void SetInitialPieces(int player, Action<Coordinates> setPiece)
+        {
+            io.WriteLine(Formats.InitialPieces, player);
+            for (var i = 1; i <= 3; i++)
+            {
+                setPiece(io.ReadCoordinates(board));
+            }
+        }
+    }
+
+    public Generation CalculateNextGeneration()
+    {
+        var board = new Board();
+
+        for (var x = 1; x <= 5; x++)
+        {
+            for (var y = 1; y <= 5; y++)
+            {
+                board[x, y] = _board[x, y].GetNext();
+            }
+        }
+
+        return new(board);
+    }
+
+    private void CountNeighbours()
+    {
+        for (var x = 1; x <= 5; x++)
+        {
+            for (var y = 1; y <= 5; y++)
+            {
+                var coordinates = new Coordinates(x, y);
+                var piece = _board[coordinates];
+                if (piece.IsEmpty) { continue; }
+
+                foreach (var neighbour in coordinates.GetNeighbors())
+                {
+                    _board[neighbour] = _board[neighbour].AddNeighbour(piece);
+                }
+            }
+        }
+    }
+
+    public override string ToString() => _board.ToString();
+}