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/Activities/DonateExperience.cs

@@ -0,0 +1,66 @@
+#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.Mods.Common.Traits;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Activities
+{
+	sealed class DonateExperience : Enter
+	{
+		readonly int level;
+		readonly int playerExperience;
+
+		Actor enterActor;
+		GainsExperience enterGainsExperience;
+
+		public DonateExperience(Actor self, in Target target, int level, int playerExperience, Color? targetLineColor)
+			: base(self, target, targetLineColor)
+		{
+			this.level = level;
+			this.playerExperience = playerExperience;
+		}
+
+		protected override bool TryStartEnter(Actor self, Actor targetActor)
+		{
+			enterActor = targetActor;
+			enterGainsExperience = targetActor.TraitOrDefault<GainsExperience>();
+
+			if (enterGainsExperience == null || enterGainsExperience.Level == enterGainsExperience.MaxLevel)
+			{
+				Cancel(self, true);
+				return false;
+			}
+
+			return true;
+		}
+
+		protected override void OnEnterComplete(Actor self, Actor targetActor)
+		{
+			// Make sure the target hasn't changed while entering
+			// OnEnterComplete is only called if targetActor is alive
+			if (targetActor != enterActor)
+				return;
+
+			if (enterGainsExperience.Level == enterGainsExperience.MaxLevel)
+				return;
+
+			enterGainsExperience.GiveLevels(level);
+
+			var exp = self.Owner.PlayerActor.TraitOrDefault<PlayerExperience>();
+			if (exp != null && enterActor.Owner != self.Owner)
+				exp.GiveExperience(playerExperience);
+
+			self.Dispose();
+		}
+	}
+}