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/Support/PerfHistory.cs

@@ -0,0 +1,57 @@
+#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 OpenRA.Primitives;
+
+namespace OpenRA.Support
+{
+	public static class PerfHistory
+	{
+		static readonly Color[] Colors =
+		[
+			Color.Red, Color.Green,
+			Color.Orange, Color.Yellow,
+			Color.Fuchsia, Color.Lime,
+			Color.Cyan, Color.Blue,
+			Color.White, Color.Teal,
+			Color.Pink, Color.MediumPurple,
+			Color.Olive, Color.CornflowerBlue
+		];
+
+		static int nextColor;
+
+		public static Cache<string, PerfItem> Items = new(
+			s =>
+			{
+				var x = new PerfItem(s, Colors[nextColor++]);
+				if (nextColor >= Colors.Length) nextColor = 0;
+				return x;
+			});
+
+		public static void Increment(string item, double x)
+		{
+			Items[item].Val += x;
+		}
+
+		public static void Tick()
+		{
+			foreach (var item in Items.Values)
+				if (item.HasNormalTick)
+					item.Tick();
+		}
+
+		public static void Reset()
+		{
+			foreach (var item in Items.Values)
+				item.ResetSamples();
+		}
+	}
+}