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/ElevatedBridgePlaceholder.cs

@@ -0,0 +1,75 @@
+#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;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public enum ElevatedBridgePlaceholderOrientation { X, Y }
+
+	[Desc("Placeholder to make static elevated bridges work.",
+		"Define individual trait instances for each elevated bridge footprint in the map.")]
+	[TraitLocation(SystemActors.World)]
+	public class ElevatedBridgePlaceholderInfo : TraitInfo<ElevatedBridgePlaceholder>, Requires<ElevatedBridgeLayerInfo>, ILobbyCustomRulesIgnore
+	{
+		[FieldLoader.Require]
+		[Desc("Location of the bridge")]
+		public readonly CPos Location = CPos.Zero;
+
+		[FieldLoader.Require]
+		[Desc("Orientation of the bridge.")]
+		public readonly ElevatedBridgePlaceholderOrientation Orientation;
+
+		[FieldLoader.Require]
+		[Desc("Length of the bridge")]
+		public readonly int Length = 0;
+
+		[FieldLoader.Require]
+		[Desc("Height of the bridge in map height steps.")]
+		public readonly byte Height = 0;
+
+		[Desc("Terrain type of the bridge.")]
+		public readonly string TerrainType = "Road";
+
+		public IEnumerable<CPos> BridgeCells()
+		{
+			var dimensions = Orientation == ElevatedBridgePlaceholderOrientation.X ?
+				new CVec(Length + 1, 3) : new CVec(3, Length + 1);
+
+			for (var y = 0; y < dimensions.Y; y++)
+				for (var x = 0; x < dimensions.X; x++)
+					yield return Location + new CVec(x, y);
+		}
+
+		public IEnumerable<CPos> EndCells()
+		{
+			if (Orientation == ElevatedBridgePlaceholderOrientation.X)
+			{
+				for (var y = 0; y < 3; y++)
+				{
+					yield return Location + new CVec(0, y);
+					yield return Location + new CVec(Length, y);
+				}
+			}
+			else
+			{
+				for (var x = 0; x < 3; x++)
+				{
+					yield return Location + new CVec(x, 0);
+					yield return Location + new CVec(x, Length);
+				}
+			}
+		}
+	}
+
+	public class ElevatedBridgePlaceholder { }
+}