MCV Undeploy

OpenRa.Game/Traits/Activities/UndeployMcv.cs

@@ -0,0 +1,43 @@
+using System;
+
+namespace OpenRa.Game.Traits.Activities
+{
+	class UndeployMcv : IActivity
+	{
+		public IActivity NextActivity { get; set; }
+		bool started;
+
+		void DoUndeploy(World w,Actor self)
+		{
+			self.Health = 0;
+			foreach (var ns in self.traits.WithInterface<INotifySold>())
+				ns.Sold(self);
+			w.Remove(self);
+			
+			var mcv = new Actor(Rules.UnitInfo["MCV"], self.Location + new int2(1, 1), self.Owner);
+			mcv.traits.Get<Unit>().Facing = 96;
+			w.Add(mcv);
+		}
+
+		public IActivity Tick(Actor self)
+		{
+			if (!started)
+			{
+				var rb = self.traits.Get<RenderBuilding>();
+				rb.PlayCustomAnimBackwards(self, "make",
+					() => Game.world.AddFrameEndTask(w => DoUndeploy(w,self)));
+
+				Sound.Play("cashturn.aud");
+				started = true;
+			}
+
+			return this;
+		}
+
+		public void Cancel(Actor self)
+		{
+			// Cancel can't happen between this being moved to the head of the list, and it being Ticked.
+			throw new InvalidOperationException("UndeployMcvAction: Cancel() should never occur.");
+		}
+	}
+}