Move RA World traits, FrozenUnderFog Modifier and various other traits into Traits

OpenRA.Mods.RA/Traits/Buildings/TargetableBuilding.cs

@@ -0,0 +1,49 @@
+#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.Collections.Generic;
+using System.Linq;
+using OpenRA.Mods.RA.Buildings;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Traits
+{
+	public class TargetableBuildingInfo : ITraitInfo, ITargetableInfo, Requires<BuildingInfo>
+	{
+		public readonly string[] TargetTypes = { };
+		public string[] GetTargetTypes() { return TargetTypes; }
+
+		public bool RequiresForceFire = false;
+
+		public object Create(ActorInitializer init) { return new TargetableBuilding(init.self, this); }
+	}
+
+	public class TargetableBuilding : ITargetable
+	{
+		readonly TargetableBuildingInfo info;
+		readonly Building building;
+
+		public TargetableBuilding(Actor self, TargetableBuildingInfo info)
+		{
+			this.info = info;
+			building = self.Trait<Building>();
+		}
+
+		public string[] TargetTypes { get { return info.TargetTypes; } }
+		public bool TargetableBy(Actor self, Actor byActor) { return true; }
+
+		public IEnumerable<WPos> TargetablePositions(Actor self)
+		{
+			return building.OccupiedCells().Select(c => self.World.Map.CenterOfCell(c.First));
+		}
+
+		public bool RequiresForceFire { get { return info.RequiresForceFire; } }
+	}
+}