context: using System;
  using Server.Targeting;
  using Server.Network;
  using Server.Misc;
  using Server.Items;
  
  namespace Server.Spells.Third
  {
  	public class WallOfStoneSpell : MagerySpell
  	{
  		private static SpellInfo m_Info = new SpellInfo(
  				"Wall of Stone", "In Sanct Ylem",
  				227,
  				9011,
  				false,
  				Reagent.Bloodmoss,
  				Reagent.Garlic
  			);
  
  		public override SpellCircle Circle { get { return SpellCircle.Third; } }
  
  		public WallOfStoneSpell( Mobile caster, Item scroll )
  			: base( caster, scroll, m_Info )
  		{
  		}
  
  		public override void OnCast()
  		{
  			Caster.Target = new InternalTarget( this );
  		}
  
  		public void Target( IPoint3D p )
  		{
  			if ( !Caster.CanSee( p ) )
  			{
  				Caster.SendLocalizedMessage( 500237 ); // Target can not be seen.
  			}
  			else if ( SpellHelper.CheckTown( p, Caster ) && CheckSequence() )
  			{
  				SpellHelper.Turn( Caster, p );
  
  				SpellHelper.GetSurfaceTop( ref p );
  
  				int dx = Caster.Location.X - p.X;
  				int dy = Caster.Location.Y - p.Y;
  				int rx = ( dx - dy ) * 44;
  				int ry = ( dx + dy ) * 44;
  
  				bool eastToWest;
  
  				if ( rx >= 0 && ry >= 0 )
  				{
  					eastToWest = false;
  				}
  				else if ( rx >= 0 )
  				{
  					eastToWest = true;
  				}
  				else if ( ry >= 0 )
  				{
  					eastToWest = true;
  				}
  				else
  				{
  					eastToWest = false;
  				}
  
  				Effects.PlaySound( p, Caster.Map, 0x1F6 );
  
  				for ( int i = -1; i <= 1; ++i )
  				{
  					Point3D loc = new Point3D( eastToWest ? p.X + i : p.X, eastToWest ? p.Y : p.Y + i, p.Z );
  					bool canFit = SpellHelper.AdjustField( ref loc, Caster.Map, 22, true );
  
  					//Effects.SendLocationParticles( EffectItem.Create( loc, Caster.Map, EffectItem.DefaultDuration ), 0x376A, 9, 10, 5025 );
  
  					if ( !canFit )
  						continue;
  
  					Item item = new InternalItem( loc, Caster.Map, Caster );
  
  					Effects.SendLocationParticles( item, 0x376A, 9, 10, 5025 );
  
  					//new InternalItem( loc, Caster.Map, Caster );
  				}
  			}
  
  			FinishSequence();
  		}
  
  		[DispellableField]
  		private class InternalItem : Item
  		{
  			private Timer m_Timer;
  			private DateTime m_End;
  
  			public override bool BlocksFit { get { return true; } }
  
  			public InternalItem( Point3D loc, Map map, Mobile caster )
  				: base( 0x80 )
  			{
  				Visible = false;
  				Movable = false;
  
  				MoveToWorld( loc, map );
  
  				if ( caster.InLOS( this ) )
  					Visible = true;
  				else
  					Delete();
  
  				if ( Deleted )
  					return;
  
  				m_Timer = new InternalTimer( this, TimeSpan.FromSeconds( 10.0 ) );
  				m_Timer.Start();
  
  				m_End = DateTime.Now + TimeSpan.FromSeconds( 10.0 );
  			}
  
  			public InternalItem( Serial serial )
  				: base( serial )
  			{
  			}
  
  			public override void Serialize( GenericWriter writer )
  			{
  				base.Serialize( writer );
  
  				writer.Write( (int) 1 ); // version
  
  				writer.WriteDeltaTime( m_End );
  			}
  
  			public override void Deserialize( GenericReader reader )
  			{
  				base.Deserialize( reader );
  
  				int version = reader.ReadInt();
  
  				switch ( version )
  				{
  					case 1:
  						{
  							m_End = reader.ReadDeltaTime();
  
  							m_Timer = new InternalTimer( this, m_End - DateTime.Now );
  							m_Timer.Start();
  
  							break;
  						}
  					case 0:
  						{
  							TimeSpan duration = TimeSpan.FromSeconds( 10.0 );
  
  							m_Timer = new InternalTimer( this, duration );
  							m_Timer.Start();
  
  							m_End = DateTime.Now + duration;
  
  							break;
  						}
  				}
  			}
  
  			public override void OnAfterDelete()
  			{
  				base.OnAfterDelete();
  
  				if ( m_Timer != null )
  					m_Timer.Stop();
  			}
  
  			private class InternalTimer : Timer
  			{
  				private InternalItem m_Item;
  
  				public InternalTimer( InternalItem item, TimeSpan duration )
  					: base( duration )
  				{
  					m_Item = item;
  				}
  
  				protected override void OnTick()
  				{
  					m_Item.Delete();
  				}
  			}
  		}
  
  		private class InternalTarget : Target
  		{
  			private WallOfStoneSpell m_Owner;
  
  			public InternalTarget( WallOfStoneSpell owner )
  				: base( 12, true, TargetFlags.None )
  			{
  				m_Owner = owner;
  			}
  
  			protected override void OnTarget( Mobile from, object o )
  			{
  				if ( o is IPoint3D )
  
gt: 					m_Owner.Target( (IPoint3D) o );