Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Game/Map/MapCoordsRegion.cs

@@ -0,0 +1,89 @@
+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections;
+using System.Collections.Generic;
+
+namespace OpenRA
+{
+	public readonly struct MapCoordsRegion : IEnumerable<MPos>
+	{
+		public struct MapCoordsEnumerator : IEnumerator<MPos>
+		{
+			readonly MapCoordsRegion r;
+
+			public MapCoordsEnumerator(MapCoordsRegion region)
+				: this()
+			{
+				r = region;
+				Reset();
+			}
+
+			public bool MoveNext()
+			{
+				var u = Current.U + 1;
+				var v = Current.V;
+
+				// Check for column overflow
+				if (u > r.BottomRight.U)
+				{
+					v++;
+					u = r.TopLeft.U;
+
+					// Check for row overflow
+					if (v > r.BottomRight.V)
+						return false;
+				}
+
+				Current = new MPos(u, v);
+				return true;
+			}
+
+			public void Reset()
+			{
+				Current = new MPos(r.TopLeft.U - 1, r.TopLeft.V);
+			}
+
+			public MPos Current { get; private set; }
+			readonly object IEnumerator.Current => Current;
+			public readonly void Dispose() { }
+		}
+
+		public MapCoordsRegion(MPos mapTopLeft, MPos mapBottomRight)
+		{
+			TopLeft = mapTopLeft;
+			BottomRight = mapBottomRight;
+		}
+
+		public override string ToString()
+		{
+			return $"{TopLeft}->{BottomRight}";
+		}
+
+		public MapCoordsEnumerator GetEnumerator()
+		{
+			return new MapCoordsEnumerator(this);
+		}
+
+		IEnumerator<MPos> IEnumerable<MPos>.GetEnumerator()
+		{
+			return GetEnumerator();
+		}
+
+		IEnumerator IEnumerable.GetEnumerator()
+		{
+			return GetEnumerator();
+		}
+
+		public MPos TopLeft { get; }
+		public MPos BottomRight { get; }
+	}
+}