--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/api/Requirements/AbstractUnitRequirement.cs	Fri Dec 19 15:57:51 2008 +0000
@@ -0,0 +1,66 @@
+// AbstractUnitRequirement.cs
+//
+//  Copyright (C) 2008 IBBoard
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License version 2.1 of the License as published by the Free
+// Software Foundation.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
+//
+//
+
+using System;
+using IBBoard.WarFoundry.API.Objects;
+
+namespace IBBoard.WarFoundry.API.Requirements
+{
+	/// <summary>
+	/// Base abstract class for all requirements related to adding/removing something from a Unit (e.g. adding equipment or abilities)
+	/// </summary>
+	public abstract class AbstractUnitRequirement : AbstractRequirement
+	{		
+		protected abstract AbstractFailedRequirement CanAddToUnit(Unit unit);
+		protected abstract AbstractFailedRequirement CanRemoveFromUnit(Unit unit);
+		
+		public override AbstractFailedRequirement CanAddToWarFoundryObject (WarFoundryObject obj)
+		{
+			AbstractFailedRequirement fail = null;
+			
+			if (obj is Unit)
+			{
+				fail = CanAddToUnit((Unit)obj);
+			}
+			else
+			{
+				fail = new FailedRequirement(this);
+			}
+			
+			return fail;
+		}
+		
+		public override AbstractFailedRequirement CanRemoveFromWarFoundryObject (WarFoundryObject obj)
+		{
+			AbstractFailedRequirement fail = null;
+			
+			if (obj is Unit)
+			{
+				fail = CanRemoveFromUnit((Unit)obj);
+			}
+			else
+			{
+				fail = new FailedRequirement(this);
+			}
+			
+			return fail;
+		}
+	}
+}