Refactor send and receive Orders loop

OpenRA.Game/Network/TickTime.cs

@@ -0,0 +1,57 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2021 The OpenRA Developers (see AUTHORS)
+ * 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;
+
+namespace OpenRA.Network
+{
+	public sealed class TickTime
+	{
+		readonly Func<int> timestep;
+
+		long lastTickTime;
+
+		public TickTime(Func<int> timestep, long lastTickTime)
+		{
+			this.timestep = timestep;
+			this.lastTickTime = lastTickTime;
+		}
+
+		public long Value
+		{
+			get => lastTickTime;
+			set => lastTickTime = value;
+		}
+
+		public bool ShouldAdvance(long tick)
+		{
+			var i = timestep();
+
+			if (i == 0)
+				return false;
+
+			var tickDelta = tick - lastTickTime;
+			return tickDelta >= i;
+		}
+
+		public void AdvanceTickTime(long tick)
+		{
+			var tickDelta = tick - lastTickTime;
+
+			var currentTimestep = timestep();
+
+			var integralTickTimestep = (tickDelta / currentTimestep) * currentTimestep;
+			lastTickTime += integralTickTimestep >= Game.TimestepJankThreshold
+				? integralTickTimestep
+				: currentTimestep;
+		}
+	}
+}