Implement tunnels.

OpenRA.Mods.Common/Traits/World/TerrainTunnel.cs

@@ -0,0 +1,62 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2017 The OpenRA Developers (see AUTHORS)
+ * 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 System.Linq;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public class TerrainTunnelInfo : TraitInfo<TerrainTunnel>, Requires<TerrainTunnelLayerInfo>, ILobbyCustomRulesIgnore
+	{
+		[FieldLoader.Require]
+		[Desc("Location of the tunnel")]
+		public readonly CPos Location = CPos.Zero;
+
+		[FieldLoader.Require]
+		[Desc("Height of the tunnel floor in map height steps.")]
+		public readonly byte Height = 0;
+
+		[FieldLoader.Require]
+		[Desc("Size of the tunnel footprint")]
+		public readonly CVec Dimensions = CVec.Zero;
+
+		[FieldLoader.Require]
+		[Desc("Tunnel footprint.", "_ is passable, x is blocked, and o are tunnel portals.")]
+		public readonly string Footprint = string.Empty;
+
+		[FieldLoader.Require]
+		[Desc("Terrain type of the tunnel floor.")]
+		public readonly string TerrainType = null;
+
+		public IEnumerable<CPos> TunnelCells()
+		{
+			return CellsMatching('_').Concat(CellsMatching('o'));
+		}
+
+		public IEnumerable<CPos> PortalCells()
+		{
+			return CellsMatching('o');
+		}
+
+		IEnumerable<CPos> CellsMatching(char c)
+		{
+			var index = 0;
+			var footprint = Footprint.Where(x => !char.IsWhiteSpace(x)).ToArray();
+			for (var y = 0; y < Dimensions.Y; y++)
+				for (var x = 0; x < Dimensions.X; x++)
+					if (footprint[index++] == c)
+						yield return Location + new CVec(x, y);
+		}
+	}
+
+	public class TerrainTunnel { }
+}