Add SearchPatternShotSelector

77_Salvo/csharp/Targetting/SearchPattern.cs

@@ -0,0 +1,22 @@
+using System.Collections.Immutable;
+
+namespace Salvo.Targetting;
+
+internal class SearchPattern
+{
+    private static readonly ImmutableArray<Offset> _offsets =
+        ImmutableArray.Create<Offset>(new(1, 1), new(-1, 1), new(1, -3), new(1, 1), new(0, 2), new(-1, 1));
+
+    private int _nextIndex;
+
+    internal bool TryGetOffset(out Offset offset)
+    {
+        offset = default;
+        if (_nextIndex >= _offsets.Length) { return false; }
+        
+        offset = _offsets[_nextIndex++];
+        return true;
+    }
+
+    internal void Reset() => _nextIndex = 0;
+}