Remove HasEmbeddedPalette from sequences.

OpenRA.Mods.Common/SpriteLoaders/EmbeddedSpritePalette.cs

@@ -0,0 +1,35 @@
+#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;
+
+namespace OpenRA.Mods.Common.SpriteLoaders
+{
+	public class EmbeddedSpritePalette
+	{
+		readonly uint[] filePalette;
+		readonly Dictionary<int, uint[]> framePalettes;
+
+		public EmbeddedSpritePalette(uint[] filePalette = null, Dictionary<int, uint[]> framePalettes = null)
+		{
+			this.filePalette = filePalette;
+			this.framePalettes = framePalettes;
+		}
+
+		public bool TryGetPaletteForFrame(int frame, out uint[] palette)
+		{
+			if (framePalettes == null || !framePalettes.TryGetValue(frame, out palette))
+				palette = filePalette;
+
+			return palette != null;
+		}
+	}
+}