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/Traits/Render/WithSpriteControlGroupDecoration.cs

@@ -0,0 +1,68 @@
+#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.Generic;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits.Render
+{
+	[Desc("Renders Ctrl groups using pixel art.")]
+	public class WithSpriteControlGroupDecorationInfo : TraitInfo
+	{
+		[PaletteReference]
+		public readonly string Palette = "chrome";
+
+		public readonly string Image = "pips";
+
+		[SequenceReference(nameof(Image))]
+		[Desc("Sprite sequence used to render the control group 0-9 numbers.")]
+		public readonly string GroupSequence = "groups";
+
+		[Desc("Position in the actor's selection box to draw the decoration.")]
+		public readonly string Position = "TopLeft";
+
+		[Desc("Offset sprite center position from the selection box edge.")]
+		public readonly int2 Margin = int2.Zero;
+
+		public override object Create(ActorInitializer init) { return new WithSpriteControlGroupDecoration(init.Self, this); }
+	}
+
+	public class WithSpriteControlGroupDecoration : IDecoration
+	{
+		public readonly WithSpriteControlGroupDecorationInfo Info;
+		readonly Animation anim;
+
+		public WithSpriteControlGroupDecoration(Actor self, WithSpriteControlGroupDecorationInfo info)
+		{
+			Info = info;
+			anim = new Animation(self.World, Info.Image);
+		}
+
+		bool IDecoration.RequiresSelection => true;
+
+		IEnumerable<IRenderable> IDecoration.RenderDecoration(Actor self, WorldRenderer wr, ISelectionDecorations container)
+		{
+			var group = self.World.ControlGroups.GetControlGroupForActor(self);
+			if (group == null)
+				return [];
+
+			anim.PlayFetchIndex(Info.GroupSequence, () => (int)group);
+
+			var screenPos = container.GetDecorationOrigin(self, wr, Info.Position, Info.Margin) - (0.5f * anim.Image.Size.XY).ToInt2();
+			var palette = wr.Palette(Info.Palette);
+			return
+			[
+				new UISpriteRenderable(anim.Image, self.CenterPosition, screenPos, 0, palette)
+			];
+		}
+	}
+}