Move some Building traits and related elements to Mods.Common

OpenRA.Mods.Common/Traits/Buildings/FootprintUtils.cs

@@ -0,0 +1,71 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public static class FootprintUtils
+	{
+		public static IEnumerable<CPos> Tiles(Ruleset rules, string name, BuildingInfo buildingInfo, CPos topLeft)
+		{
+			var dim = (CVec)buildingInfo.Dimensions;
+
+			var footprint = buildingInfo.Footprint.Where(x => !char.IsWhiteSpace(x));
+
+			var buildingTraits = rules.Actors[name].Traits;
+			if (buildingTraits.Contains<BibInfo>() && !buildingTraits.Get<BibInfo>().HasMinibib)
+			{
+				dim += new CVec(0, 1);
+				footprint = footprint.Concat(new char[dim.X]);
+			}
+
+			return TilesWhere(name, dim, footprint.ToArray(), a => a != '_').Select(t => t + topLeft);
+		}
+
+		public static IEnumerable<CPos> Tiles(Actor a)
+		{
+			return Tiles(a.World.Map.Rules, a.Info.Name, a.Info.Traits.Get<BuildingInfo>(), a.Location);
+		}
+
+		public static IEnumerable<CPos> UnpathableTiles(string name, BuildingInfo buildingInfo, CPos position)
+		{
+			var footprint = buildingInfo.Footprint.Where(x => !char.IsWhiteSpace(x)).ToArray();
+			foreach (var tile in TilesWhere(name, (CVec)buildingInfo.Dimensions, footprint, a => a == 'x'))
+				yield return tile + position;
+		}
+
+		static IEnumerable<CVec> TilesWhere(string name, CVec dim, char[] footprint, Func<char, bool> cond)
+		{
+			if (footprint.Length != dim.X * dim.Y)
+				throw new InvalidOperationException("Invalid footprint for " + name);
+			var index = 0;
+
+			for (var y = 0; y < dim.Y; y++)
+				for (var x = 0; x < dim.X; x++)
+					if (cond(footprint[index++]))
+						yield return new CVec(x, y);
+		}
+
+		public static CVec AdjustForBuildingSize(BuildingInfo buildingInfo)
+		{
+			var dim = buildingInfo.Dimensions;
+			return new CVec(dim.X / 2, dim.Y > 1 ? (dim.Y + 1) / 2 : 0);
+		}
+
+		public static WVec CenterOffset(World w, BuildingInfo buildingInfo)
+		{
+			var dim = buildingInfo.Dimensions;
+			return (w.Map.CenterOfCell(CPos.Zero + new CVec(dim.X, dim.Y)) - w.Map.CenterOfCell(new CPos(1, 1))) / 2;
+		}
+	}
+}