Move Shp conversion/remap commands to Mods.Cnc

OpenRA.Mods.Cnc/UtilityCommands/RemapShpCommand.cs

@@ -0,0 +1,89 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2019 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;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.SpriteLoaders;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Cnc.UtilityCommands
+{
+	class RemapShpCommand : IUtilityCommand
+	{
+		string IUtilityCommand.Name { get { return "--remap"; } }
+
+		bool IUtilityCommand.ValidateArguments(string[] args)
+		{
+			return args.Length >= 5;
+		}
+
+		[Desc("SRCMOD:PAL DESTMOD:PAL SRCSHP DESTSHP", "Remap SHPs to another palette")]
+		void IUtilityCommand.Run(Utility utility, string[] args)
+		{
+			var remap = new Dictionary<int, int>();
+
+			/* the first 4 entries are fixed */
+			for (var i = 0; i < 4; i++)
+				remap[i] = i;
+
+			var srcMod = args[1].Split(':')[0];
+			var srcModData = new ModData(utility.Mods[srcMod], utility.Mods);
+			Game.ModData = srcModData;
+
+			var srcPaletteInfo = srcModData.DefaultRules.Actors["player"].TraitInfo<PlayerColorPaletteInfo>();
+			var srcRemapIndex = srcPaletteInfo.RemapIndex;
+
+			var destMod = args[2].Split(':')[0];
+			var destModData = new ModData(utility.Mods[destMod], utility.Mods);
+			Game.ModData = destModData;
+			var destPaletteInfo = destModData.DefaultRules.Actors["player"].TraitInfo<PlayerColorPaletteInfo>();
+			var destRemapIndex = destPaletteInfo.RemapIndex;
+			var shadowIndex = new int[] { };
+
+			// the remap range is always 16 entries, but their location and order changes
+			for (var i = 0; i < 16; i++)
+				remap[PlayerColorRemap.GetRemapIndex(srcRemapIndex, i)]
+					= PlayerColorRemap.GetRemapIndex(destRemapIndex, i);
+
+			// map everything else to the best match based on channel-wise distance
+			var srcPalette = new ImmutablePalette(args[1].Split(':')[1], shadowIndex);
+			var destPalette = new ImmutablePalette(args[2].Split(':')[1], shadowIndex);
+
+			for (var i = 0; i < Palette.Size; i++)
+				if (!remap.ContainsKey(i))
+					remap[i] = Enumerable.Range(0, Palette.Size)
+						.Where(a => !remap.ContainsValue(a))
+						.MinBy(a => ColorDistance(destPalette[a], srcPalette[i]));
+
+			using (var s = File.OpenRead(args[3]))
+			using (var destStream = File.Create(args[4]))
+			{
+				var srcImage = new ShpTDSprite(s);
+				ShpTDSprite.Write(destStream, srcImage.Size,
+					srcImage.Frames.Select(im => im.Data.Select(px => (byte)remap[px]).ToArray()));
+			}
+		}
+
+		static int ColorDistance(uint a, uint b)
+		{
+			var ca = Color.FromArgb((int)a);
+			var cb = Color.FromArgb((int)b);
+
+			return Math.Abs(ca.R - cb.R) +
+				Math.Abs(ca.G - cb.G) +
+				Math.Abs(ca.B - cb.B);
+		}
+	}
+}