Move Palette traits to their own directory.

Also adds missing TraitLocation definitions.

OpenRA.Mods.Common/Traits/Palettes/IndexedPlayerPalette.cs

@@ -0,0 +1,71 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2020 The OpenRA Developers (see AUTHORS)
+ * 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.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.World | SystemActors.EditorWorld)]
+	[Desc("Define a player palette by swapping palette indices.")]
+	public class IndexedPlayerPaletteInfo : TraitInfo, IRulesetLoaded
+	{
+		[PaletteReference]
+		[Desc("The name of the palette to base off.")]
+		public readonly string BasePalette = null;
+
+		[PaletteDefinition(true)]
+		[Desc("The prefix for the resulting player palettes")]
+		public readonly string BaseName = "player";
+
+		[Desc("Remap these indices to player colors.")]
+		public readonly int[] RemapIndex = { };
+
+		[Desc("Allow palette modifiers to change the palette.")]
+		public readonly bool AllowModifiers = true;
+
+		public readonly Dictionary<string, int[]> PlayerIndex;
+
+		public override object Create(ActorInitializer init) { return new IndexedPlayerPalette(this); }
+
+		public void RulesetLoaded(Ruleset rules, ActorInfo ai)
+		{
+			foreach (var p in PlayerIndex)
+				if (p.Value.Length != RemapIndex.Length)
+					throw new YamlException($"PlayerIndex for player `{p.Key}` length does not match RemapIndex!");
+		}
+	}
+
+	public class IndexedPlayerPalette : ILoadsPlayerPalettes
+	{
+		readonly IndexedPlayerPaletteInfo info;
+
+		public IndexedPlayerPalette(IndexedPlayerPaletteInfo info)
+		{
+			this.info = info;
+		}
+
+		public void LoadPlayerPalettes(WorldRenderer wr, string playerName, Color color, bool replaceExisting)
+		{
+			var basePalette = wr.Palette(info.BasePalette).Palette;
+			ImmutablePalette pal;
+
+			if (info.PlayerIndex.TryGetValue(playerName, out var remap))
+				pal = new ImmutablePalette(basePalette, new IndexedColorRemap(basePalette, info.RemapIndex, remap));
+			else
+				pal = new ImmutablePalette(basePalette);
+
+			wr.AddPalette(info.BaseName + playerName, pal, info.AllowModifiers, replaceExisting);
+		}
+	}
+}