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.Mods.Common/Pathfinder/CellInfoLayerPool.cs

@@ -0,0 +1,86 @@
+#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;
+using System.Collections.Generic;
+
+namespace OpenRA.Mods.Common.Pathfinder
+{
+	sealed class CellInfoLayerPool
+	{
+		const int MaxPoolSize = 4;
+		readonly Stack<CellLayer<CellInfo>> pool = new(MaxPoolSize);
+		readonly Map map;
+
+		public CellInfoLayerPool(Map map)
+		{
+			this.map = map;
+		}
+
+		public PooledCellInfoLayer Get()
+		{
+			return new PooledCellInfoLayer(this);
+		}
+
+		CellLayer<CellInfo> GetLayer()
+		{
+			CellLayer<CellInfo> layer = null;
+			lock (pool)
+				if (pool.Count > 0)
+					layer = pool.Pop();
+
+			// As the default value of CellInfo represents an Unvisited location,
+			// we don't need to initialize the values in the layer,
+			// we can just clear them to the defaults.
+			if (layer == null)
+				layer = new CellLayer<CellInfo>(map);
+			else
+				layer.Clear();
+
+			return layer;
+		}
+
+		void ReturnLayer(CellLayer<CellInfo> layer)
+		{
+			lock (pool)
+				if (pool.Count < MaxPoolSize)
+					pool.Push(layer);
+		}
+
+		public sealed class PooledCellInfoLayer : IDisposable
+		{
+			CellInfoLayerPool layerPool;
+			List<CellLayer<CellInfo>> layers = [];
+
+			public PooledCellInfoLayer(CellInfoLayerPool layerPool)
+			{
+				this.layerPool = layerPool;
+			}
+
+			public CellLayer<CellInfo> GetLayer()
+			{
+				var layer = layerPool.GetLayer();
+				layers.Add(layer);
+				return layer;
+			}
+
+			public void Dispose()
+			{
+				if (layerPool != null)
+					foreach (var layer in layers)
+						layerPool.ReturnLayer(layer);
+
+				layers = null;
+				layerPool = null;
+			}
+		}
+	}
+}