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/World/TerrainGeometryOverlay.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.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Commands;
+using OpenRA.Mods.Common.Graphics;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.World | SystemActors.EditorWorld)]
+	[IncludeStaticFluentReferences(typeof(TerrainGeometryOverlay))]
+	[Desc("Renders a debug overlay showing the terrain cells. Attach this to the world actor.")]
+	public class TerrainGeometryOverlayInfo : TraitInfo<TerrainGeometryOverlay> { }
+
+	public class TerrainGeometryOverlay : IRenderAnnotations, IWorldLoaded, IChatCommand
+	{
+		const string CommandName = "terrain-geometry";
+
+		[FluentReference]
+		const string CommandDescription = "description-terrain-geometry-overlay";
+
+		public bool Enabled;
+
+		void IWorldLoaded.WorldLoaded(World w, WorldRenderer wr)
+		{
+			var console = w.WorldActor.TraitOrDefault<ChatCommands>();
+			var help = w.WorldActor.TraitOrDefault<HelpCommand>();
+
+			if (console == null || help == null)
+				return;
+
+			console.RegisterCommand(CommandName, this);
+			help.RegisterHelp(CommandName, CommandDescription);
+		}
+
+		void IChatCommand.InvokeCommand(string name, string arg)
+		{
+			if (name == CommandName)
+				Enabled ^= true;
+		}
+
+		IEnumerable<IRenderable> IRenderAnnotations.RenderAnnotations(Actor self, WorldRenderer wr)
+		{
+			if (!Enabled)
+				yield break;
+
+			var map = wr.World.Map;
+			var colors = wr.World.Map.Rules.TerrainInfo.HeightDebugColors;
+			var lastColor = colors.Length - 1;
+			var heightStep = map.Grid.TileScale / 2;
+			var mouseCell = wr.Viewport.ViewToWorld(Viewport.LastMousePos).ToMPos(wr.World.Map);
+
+			foreach (var uv in wr.Viewport.AllVisibleCells.CandidateMapCoords)
+			{
+				if (!map.Height.Contains(uv) || self.World.ShroudObscures(uv))
+					continue;
+
+				var height = (int)map.Height[uv];
+				var r = map.Grid.Ramps[map.Ramp[uv]];
+				var pos = map.CenterOfCell(uv.ToCPos(map)) - new WVec(0, 0, r.CenterHeightOffset);
+				var width = uv == mouseCell ? 3 : 1;
+
+				// Colors change between points, so render separately
+				foreach (var p in r.Polygons)
+				{
+					for (var i = 0; i < p.Length; i++)
+					{
+						var j = (i + 1) % p.Length;
+						var start = pos + p[i];
+						var end = pos + p[j];
+						var startColor = colors[Math.Min(lastColor, height + p[i].Z / heightStep)];
+						var endColor = colors[Math.Min(lastColor, height + p[j].Z / heightStep)];
+						yield return new LineAnnotationRenderable(start, end, width, startColor, endColor);
+					}
+				}
+			}
+
+			// Projected cell coordinates for the current cell
+			var projectedCorners = map.Grid.Ramps[0].Corners;
+			foreach (var puv in map.ProjectedCellsCovering(mouseCell))
+			{
+				var pos = map.CenterOfCell(((MPos)puv).ToCPos(map));
+				for (var i = 0; i < 4; i++)
+				{
+					var j = (i + 1) % 4;
+					var start = pos + projectedCorners[i] - new WVec(0, 0, pos.Z);
+					var end = pos + projectedCorners[j] - new WVec(0, 0, pos.Z);
+					yield return new LineAnnotationRenderable(start, end, 3, Color.Navy);
+				}
+			}
+		}
+
+		bool IRenderAnnotations.SpatiallyPartitionable => false;
+	}
+}