Simplify Love (C#) folder structure

58_Love/csharp/SourceCharacters.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace Love
+{
+    internal class SourceCharacters
+    {
+        private readonly int _lineLength;
+        private readonly char[][] _chars;
+        private int _currentRow;
+        private int _currentIndex;
+
+        public SourceCharacters(int lineLength, string message)
+        {
+            _lineLength = lineLength;
+            _chars = new[] { new char[lineLength], new char[lineLength] };
+
+            for (int i = 0; i < lineLength; i++)
+            {
+                _chars[0][i] = message[i % message.Length];
+                _chars[1][i] = ' ';
+            }
+        }
+
+        public ReadOnlySpan<char> GetCharacters(int count)
+        {
+            var span = new ReadOnlySpan<char>(_chars[_currentRow], _currentIndex, count);
+
+            _currentRow = 1 - _currentRow;
+            _currentIndex += count;
+            if (_currentIndex >= _lineLength)
+            {
+                _currentIndex = _currentRow = 0;
+            }
+
+            return span;
+        }
+    }
+}