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/Buildable.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.Frozen;
+using System.Collections.Immutable;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public class BuildableInfo : TraitInfo<Buildable>
+	{
+		[Desc("The prerequisite names that must be available before this can be built.",
+			"This can be prefixed with ! to invert the prerequisite (disabling production if the prerequisite is available)",
+			"and/or ~ to hide the actor from the production palette if the prerequisite is not available.",
+			"Prerequisites are granted by actors with the ProvidesPrerequisite trait.")]
+		public readonly ImmutableArray<string> Prerequisites = [];
+
+		[Desc("Production queue(s) that can produce this.")]
+		public readonly FrozenSet<string> Queue = FrozenSet<string>.Empty;
+
+		[Desc("Override the production structure type (from the Production Produces list) that this unit should be built at.")]
+		public readonly string BuildAtProductionType = null;
+
+		[Desc("Disable production when there are more than this many of this actor on the battlefield. Set to 0 to disable.")]
+		public readonly int BuildLimit = 0;
+
+		[Desc("Force a specific faction variant, overriding the faction of the producing actor.")]
+		public readonly string ForceFaction = null;
+
+		[SequenceReference]
+		[Desc("Sequence of the actor that contains the icon.")]
+		public readonly string Icon = "icon";
+
+		[PaletteReference(nameof(IconPaletteIsPlayerPalette))]
+		[Desc("Palette used for the production icon.")]
+		public readonly string IconPalette = "chrome";
+
+		[Desc("Custom palette is a player palette BaseName")]
+		public readonly bool IconPaletteIsPlayerPalette = false;
+
+		[Desc("Base build time in frames (-1 indicates to use the unit's Value).")]
+		public readonly int BuildDuration = -1;
+
+		[Desc("Percentage modifier to apply to the build duration.")]
+		public readonly int BuildDurationModifier = 60;
+
+		[Desc("Sort order for the production palette. Smaller numbers are presented earlier.")]
+		public readonly int BuildPaletteOrder = 9999;
+
+		[Desc("Text shown in the production tooltip.")]
+		[FluentReference(optional: true)]
+		public readonly string Description;
+
+		public static string GetInitialFaction(ActorInfo ai, string defaultFaction)
+		{
+			return ai.TraitInfoOrDefault<BuildableInfo>()?.ForceFaction ?? defaultFaction;
+		}
+	}
+
+	public class Buildable { }
+}