Add PlayerNumber

26_Chomp/csharp/PlayerNumber.cs

@@ -0,0 +1,32 @@
+namespace Chomp;
+
+internal class PlayerNumber
+{
+    private readonly float _playerCount;
+    private int _counter;
+    private float _number;
+
+    // The original code does not constrain playerCount to be an integer
+    public PlayerNumber(float playerCount)
+    {
+        _playerCount = playerCount;
+        _number = 0;
+        Increment();
+    }
+
+    public static PlayerNumber operator ++(PlayerNumber number) => number.Increment();
+
+    private PlayerNumber Increment()
+    {
+		if (_playerCount == 0) { throw new DivideByZeroException(); }
+
+        // The increment logic here is the same as the original program, and exhibits
+        // interesting behaviour when _playerCount is not an integer.
+        _counter++;
+        _number = _counter - (float)Math.Floor(_counter / _playerCount) * _playerCount;
+        if (_number == 0) { _number = _playerCount; }
+        return this;
+    }
+
+    public override string ToString() => (_number >= 0 ? " " : "") + _number.ToString();
+}