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/Warheads/CreateResourceWarhead.cs

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+#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.Immutable;
+using OpenRA.GameRules;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Warheads
+{
+	[Desc("Creates resources in a circle.")]
+	public class CreateResourceWarhead : Warhead
+	{
+		[Desc("Size of the area. The resources are seeded within this area.", "Provide 2 values for a ring effect (outer/inner).")]
+		public readonly ImmutableArray<int> Size = [0, 0];
+
+		[Desc("Will this splatter resources and which?")]
+		[FieldLoader.Require]
+		public readonly string AddsResourceType = null;
+
+		// TODO: Allow maximum resource splatter to be defined. (Per tile, and in total).
+		public override void DoImpact(in Target target, WarheadArgs args)
+		{
+			if (target.Type == TargetType.Invalid)
+				return;
+
+			var firedBy = args.SourceActor;
+			var pos = target.CenterPosition;
+			var world = firedBy.World;
+			var dat = world.Map.DistanceAboveTerrain(pos);
+			if (dat > AirThreshold)
+				return;
+
+			var targetTile = world.Map.CellContaining(pos);
+
+			var minRange = (Size.Length > 1 && Size[1] > 0) ? Size[1] : 0;
+			var allCells = world.Map.FindTilesInAnnulus(targetTile, minRange, Size[0]);
+
+			var resourceLayer = world.WorldActor.Trait<IResourceLayer>();
+			var maxDensity = resourceLayer.GetMaxDensity(AddsResourceType);
+			foreach (var cell in allCells)
+			{
+				if (!resourceLayer.CanAddResource(AddsResourceType, cell))
+					continue;
+
+				var splash = (byte)world.SharedRandom.Next(1, maxDensity - resourceLayer.GetResource(cell).Density);
+				resourceLayer.AddResource(AddsResourceType, cell, splash);
+			}
+		}
+	}
+}