Split classes to files

77_Salvo/csharp/Extensions/RandomExtensions.cs

@@ -0,0 +1,32 @@
+namespace Games.Common.Randomness;
+
+internal static class RandomExtensions
+{
+    internal static (Position, Offset) NextShipPosition(this IRandom random)
+    {
+        var startX = random.NextCoordinate();
+        var startY = random.NextCoordinate();
+        var deltaY = random.NextOffset();
+        var deltaX = random.NextOffset();
+        return (new(startX, startY), new(deltaX, deltaY));
+    }
+
+    private static Coordinate NextCoordinate(this IRandom random)
+        => random.Next(Coordinate.MinValue, Coordinate.MaxValue + 1);
+
+    private static int NextOffset(this IRandom random) => random.Next(-1, 2);
+
+    internal static (Position, Offset) GetRandomShipPositionInRange(this IRandom random, int shipSize)
+    {
+        while (true)
+        {
+            var (start, delta) = random.NextShipPosition();
+            var shipSizeLessOne = shipSize - 1;
+            var end = start + delta * shipSizeLessOne;
+            if (delta != 0 && end.IsInRange) 
+            {
+                return (start, delta);
+            }
+        }
+    }
+}