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/Palettes/PaletteFromEmbeddedSpritePalette.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.Generic;
+using OpenRA.FileSystem;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.SpriteLoaders;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.World | SystemActors.EditorWorld)]
+	public class PaletteFromEmbeddedSpritePaletteInfo : TraitInfo, IProvidesCursorPaletteInfo
+	{
+		[PaletteDefinition]
+		[FieldLoader.Require]
+		[Desc("Internal palette name")]
+		public readonly string Name = null;
+
+		[FieldLoader.Require]
+		[Desc("Filename of sprite that contains the palette definition.")]
+		public readonly string Filename = null;
+
+		[Desc("Image frame associated with the palette definition, if relevant.")]
+		public readonly int Frame = 0;
+
+		[Desc("Allow palette modifiers to change the palette.")]
+		public readonly bool AllowModifiers = true;
+
+		[Desc("Whether this palette is available for cursors.")]
+		public readonly bool CursorPalette = false;
+
+		public override object Create(ActorInitializer init) { return new PaletteFromEmbeddedSpritePalette(this); }
+
+		string IProvidesCursorPaletteInfo.Palette => CursorPalette ? Name : null;
+
+		ImmutablePalette IProvidesCursorPaletteInfo.ReadPalette(IReadOnlyFileSystem fileSystem)
+		{
+			FrameLoader.GetFrames(fileSystem, Filename, Game.ModData.SpriteLoaders, out var metadata);
+			var palettes = metadata?.GetOrDefault<EmbeddedSpritePalette>();
+			if (palettes == null || !palettes.TryGetPaletteForFrame(Frame, out var embeddedPalette))
+				throw new YamlException($"Cannot export palette from {Filename}: frame {Frame} does not define an embedded palette");
+
+			return new ImmutablePalette(embeddedPalette);
+		}
+	}
+
+	public class PaletteFromEmbeddedSpritePalette : ILoadsPalettes, IProvidesAssetBrowserPalettes
+	{
+		readonly PaletteFromEmbeddedSpritePaletteInfo info;
+		public PaletteFromEmbeddedSpritePalette(PaletteFromEmbeddedSpritePaletteInfo info) { this.info = info; }
+
+		public void LoadPalettes(WorldRenderer wr)
+		{
+			FrameLoader.GetFrames(wr.World.Map, info.Filename, Game.ModData.SpriteLoaders, out var metadata);
+			var palettes = metadata?.GetOrDefault<EmbeddedSpritePalette>();
+			if (palettes == null || !palettes.TryGetPaletteForFrame(info.Frame, out var embeddedPalette))
+				throw new YamlException($"Cannot export palette from {info.Filename}: frame {info.Frame} does not define an embedded palette");
+
+			wr.AddPalette(info.Name, new ImmutablePalette(embeddedPalette), info.AllowModifiers);
+		}
+
+		public IEnumerable<string> PaletteNames { get { yield return info.Name; } }
+	}
+}