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/Player/PlayerRadarTerrain.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;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.Player)]
+	public class PlayerRadarTerrainInfo : TraitInfo, Requires<ShroudInfo>
+	{
+		public override object Create(ActorInitializer init)
+		{
+			return new PlayerRadarTerrain(init.Self);
+		}
+	}
+
+	public class PlayerRadarTerrain : IWorldLoaded
+	{
+		public bool IsInitialized { get; private set; }
+
+		readonly World world;
+		IRadarTerrainLayer[] radarTerrainLayers;
+		CellLayer<(uint, uint)> terrainColor;
+		readonly Shroud shroud;
+
+		public event Action<MPos> CellTerrainColorChanged = null;
+
+		public PlayerRadarTerrain(Actor self)
+		{
+			world = self.World;
+			shroud = self.Trait<Shroud>();
+			shroud.OnShroudChanged += UpdateShroudCell;
+		}
+
+		void UpdateShroudCell(PPos puv)
+		{
+			var uvs = world.Map.Unproject(puv);
+			foreach (var uv in uvs)
+				UpdateTerrainCell(uv);
+		}
+
+		void UpdateTerrainCell(MPos uv)
+		{
+			if (shroud.IsVisible(uv))
+				UpdateTerrainCellColor(uv);
+		}
+
+		void UpdateTerrainCellColor(MPos uv)
+		{
+			terrainColor[uv] = GetColor(world.Map, radarTerrainLayers, uv);
+
+			CellTerrainColorChanged?.Invoke(uv);
+		}
+
+		public void WorldLoaded(World w, WorldRenderer wr)
+		{
+			radarTerrainLayers = w.WorldActor.TraitsImplementing<IRadarTerrainLayer>().ToArray();
+			terrainColor = new CellLayer<(uint, uint)>(w.Map);
+
+			w.AddFrameEndTask(_ =>
+			{
+				// Set initial terrain data
+				foreach (var uv in world.Map.AllCells.MapCoords)
+					UpdateTerrainCellColor(uv);
+
+				world.Map.Tiles.CellEntryChanged += cell => UpdateTerrainCell(cell.ToMPos(world.Map));
+				foreach (var rtl in radarTerrainLayers)
+					rtl.CellEntryChanged += cell => UpdateTerrainCell(cell.ToMPos(world.Map));
+
+				IsInitialized = true;
+			});
+		}
+
+		public (uint Left, uint Right) this[MPos uv] => terrainColor[uv];
+
+		public static (uint Left, uint Right) GetColor(Map map, IRadarTerrainLayer[] radarTerrainLayers, MPos uv)
+		{
+			foreach (var rtl in radarTerrainLayers)
+				if (rtl.TryGetTerrainColorPair(uv, out var c))
+					return (c.Left.ToArgb(), c.Right.ToArgb());
+
+			var (left, right) = map.GetTerrainColorPair(uv);
+			return (left.ToArgb(), right.ToArgb());
+		}
+	}
+}