Server.Items.BaseDoor.ChainLink_OnTarget C# (CSharp) Method

		private static void ChainLink_OnTarget( Mobile from, object targeted, object state )
		{
			BaseDoor door = targeted as BaseDoor;

			if ( door == null )
			{
				from.BeginTarget( -1, false, TargetFlags.None, new TargetStateCallback( ChainLink_OnTarget ), state );
				from.SendMessage( "That is not a door. Try again." );
			}
			else
			{
				List<BaseDoor> list = (List<BaseDoor>)state;

				if ( list.Count > 0 && list[0] == door )
				{
					if ( list.Count >= 2 )
					{
						for ( int i = 0; i < list.Count; ++i )
							list[i].Link = list[(i + 1) % list.Count];

						from.SendMessage( "The chain of doors have been linked." );
					}
					else
					{
						from.BeginTarget( -1, false, TargetFlags.None, new TargetStateCallback( ChainLink_OnTarget ), state );
						from.SendMessage( "You have not yet targeted two unique doors. Target the second door to link." );
					}
				}
				else if ( list.Contains( door ) )
				{
					from.BeginTarget( -1, false, TargetFlags.None, new TargetStateCallback( ChainLink_OnTarget ), state );
					from.SendMessage( "You have already targeted that door. Target another door, or retarget the first door to complete the chain." );
				}
				else
				{
					list.Add( door );

					from.BeginTarget( -1, false, TargetFlags.None, new TargetStateCallback( ChainLink_OnTarget ), state );

					if ( list.Count == 1 )
						from.SendMessage( "Target the second door to link." );
					else
						from.SendMessage( "Target another door to link. To complete the chain, retarget the first door." );
				}
			}
		}