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.Cnc/SpriteLoaders/TmpRALoader.cs

@@ -0,0 +1,101 @@
+#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.IO;
+using OpenRA.Graphics;
+using OpenRA.Primitives;
+
+namespace OpenRA.Mods.Cnc.SpriteLoaders
+{
+	public class TmpRALoader : ISpriteLoader
+	{
+		sealed class TmpRAFrame : ISpriteFrame
+		{
+			public SpriteFrameType Type => SpriteFrameType.Indexed8;
+			public Size Size { get; }
+			public Size FrameSize { get; }
+			public float2 Offset => float2.Zero;
+			public byte[] Data { get; set; }
+			public bool DisableExportPadding => false;
+
+			public TmpRAFrame(byte[] data, Size size)
+			{
+				FrameSize = size;
+				Data = data;
+
+				if (data == null)
+					Data = [];
+				else
+					Size = size;
+			}
+		}
+
+		static bool IsTmpRA(Stream s)
+		{
+			var start = s.Position;
+
+			s.Position += 20;
+			var a = s.ReadUInt32();
+			s.Position += 2;
+			var b = s.ReadUInt16();
+
+			s.Position = start;
+			return a == 0 && b == 0x2c73;
+		}
+
+		static TmpRAFrame[] ParseFrames(Stream s)
+		{
+			var start = s.Position;
+			var width = s.ReadUInt16();
+			var height = s.ReadUInt16();
+			var size = new Size(width, height);
+
+			s.Position += 12;
+			var imgStart = s.ReadUInt32();
+			s.Position += 8;
+			var indexEnd = s.ReadInt32();
+			s.Position += 4;
+			var indexStart = s.ReadInt32();
+
+			s.Position = indexStart;
+			var count = indexEnd - indexStart;
+			var tiles = new TmpRAFrame[count];
+
+			var tilesIndex = 0;
+			foreach (var b in s.ReadBytes(count))
+			{
+				if (b != 255)
+				{
+					s.Position = imgStart + b * width * height;
+					tiles[tilesIndex++] = new TmpRAFrame(s.ReadBytes(width * height), size);
+				}
+				else
+					tiles[tilesIndex++] = new TmpRAFrame(null, size);
+			}
+
+			s.Position = start;
+			return tiles;
+		}
+
+		public bool TryParseSprite(Stream s, string filename, out ISpriteFrame[] frames, out TypeDictionary metadata)
+		{
+			metadata = null;
+			if (!IsTmpRA(s))
+			{
+				frames = null;
+				return false;
+			}
+
+			frames = ParseFrames(s);
+			return true;
+		}
+	}
+}