engineer stuff

OpenRa.Game/Traits/Activities/CaptureBuilding.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace OpenRa.Game.Traits.Activities
+{
+	class CaptureBuilding : IActivity
+	{
+		Actor target;
+
+		public CaptureBuilding(Actor target) { this.target = target; }
+
+		public IActivity NextActivity { get; set; }
+
+		public IActivity Tick(Actor self)
+		{
+			if (target == null || target.IsDead) return NextActivity;
+			// todo: don't waste engineers on things that have been captured 
+			// between order issue time and the time we hit the building.
+
+			target.Health -= EngineerCapture.EngineerDamage;
+			if (target.Health <= 0)
+			{
+				target.Owner = self.Owner;
+				target.Health = EngineerCapture.EngineerDamage;
+			}
+
+			// the engineer is sacrificed.
+			Game.world.AddFrameEndTask(w => w.Remove(self));
+
+			return NextActivity;
+		}
+
+		public void Cancel(Actor self) { target = null; NextActivity = null; }
+	}
+}