Moves some misc traits/activities to Mods.Common, moves some RA traits into the Traits folder

OpenRA.Mods.Common/Traits/EmitInfantryOnSell.cs

@@ -0,0 +1,66 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 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.Linq;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[Desc("Spawn new actors when sold.")]
+	class EmitInfantryOnSellInfo : TraitInfo<EmitInfantryOnSell>
+	{
+		public readonly float ValuePercent = 40;
+		public readonly float MinHpPercent = 30;
+
+		[ActorReference]
+		[Desc("Be sure to use lowercase. Default value is \"e1\".")]
+		public readonly string[] ActorTypes = { "e1" };
+	}
+
+	class EmitInfantryOnSell : INotifySold
+	{
+		public void Selling(Actor self) { }
+
+		static void Emit(Actor self)
+		{
+			var info = self.Info.Traits.Get<EmitInfantryOnSellInfo>();
+			var csv = self.Info.Traits.GetOrDefault<CustomSellValueInfo>();
+			var valued = self.Info.Traits.GetOrDefault<ValuedInfo>();
+			var cost = csv != null ? csv.Value : (valued != null ? valued.Cost : 0);
+
+			var health = self.TraitOrDefault<Health>();
+			var dudesValue = info.ValuePercent * cost;
+			if (health != null)
+				dudesValue = dudesValue * health.HP / health.MaxHP;
+			dudesValue /= 100;
+
+			var eligibleLocations = FootprintUtils.Tiles(self).ToList();
+			var actorTypes = info.ActorTypes.Select(a => new { Name = a, Cost = self.World.Map.Rules.Actors[a].Traits.Get<ValuedInfo>().Cost }).ToArray();
+
+			while (eligibleLocations.Count > 0 && actorTypes.Any(a => a.Cost <= dudesValue))
+			{
+				var at = actorTypes.Where(a => a.Cost <= dudesValue).Random(self.World.SharedRandom);
+				var loc = eligibleLocations.Random(self.World.SharedRandom);
+
+				eligibleLocations.Remove(loc);
+				dudesValue -= at.Cost;
+
+				self.World.AddFrameEndTask(w => w.CreateActor(at.Name, new TypeDictionary
+				{
+					new LocationInit(loc),
+					new OwnerInit(self.Owner),
+				}));
+			}
+		}
+
+		public void Sold(Actor self) { Emit(self); }
+	}
+}