Allow bot players to be created via map.yaml

OpenRA.FileFormats/Map/PlayerReference.cs

@@ -20,6 +20,7 @@ namespace OpenRA.FileFormats
 		public bool OwnsWorld = false;
 		public bool NonCombatant = false;
 		public bool Playable = false;
+		public string Bot = null;
 		public bool DefaultStartingUnits = false;
 		public bool AllowBots = true;
 		

OpenRA.Game/Player.cs

@@ -63,13 +63,19 @@ namespace OpenRA
 				ColorRamp = pr.ColorRamp;
 				PlayerName = pr.Name;
 				NonCombatant = pr.NonCombatant;
-				
+				IsBot = pr.Bot != null;
+
 				Country = world.GetCountries()
 					.FirstOrDefault(c => pr.Race == c.Race)
 					?? world.GetCountries().Random(world.SharedRandom);
 			}
 			
 			PlayerActor = world.CreateActor("Player", new TypeDictionary { new OwnerInit(this) });
+
+			if (IsBot)
+				PlayerActor.TraitsImplementing<IBot>()
+							.Single(b => b.Info.Name == pr.Bot)
+							.Activate(this);
 		}
 
 		public void GiveAdvice(string advice)

OpenRA.Mods.RA/CreateMPPlayers.cs

@@ -45,6 +45,7 @@ namespace OpenRA.Mods.RA
 					if (client.Index == Game.LocalClientId)
 						w.SetLocalPlayer(player.Index);		// bind this one to the local player.
 				}
+				// TODO: This is shit. Merge it up into Player ctor?
 				else if (slot.Bot != null && slot.MapPlayer != null)
 				{
 					/* spawn a bot in this slot, "owned" by the host */