ModernUO/Scripts/Engines/ConPVP/DuelContext.cs

using System;
using System.Collections;
using System.Collections.Generic;
using Server.Commands;
using Server.Engines.PartySystem;
using Server.Factions;
using Server.Gumps;
using Server.Items;
using Server.Mobiles;
using Server.Network;
using Server.Spells;
using Server.Spells.Bushido;
using Server.Spells.Chivalry;
using Server.Spells.Necromancy;
using Server.Spells.Ninjitsu;
using Server.Spells.Seventh;
using Server.Spells.Spellweaving;

namespace Server.Engines.ConPVP
{
	public delegate void CountdownCallback( int count );

	public class DuelContext
	{
		private Mobile m_Initiator;
		private ArrayList m_Participants;
		private Ruleset m_Ruleset;
		private Arena m_Arena;
		private bool m_Registered = true;
		private bool m_Finished, m_Started;

		private bool m_ReadyWait;
		private int m_ReadyCount;

		private bool m_Rematch;

		public bool Rematch => m_Rematch;

		public bool ReadyWait => m_ReadyWait;
		public int ReadyCount => m_ReadyCount;

		public bool Registered => m_Registered;
		public bool Finished => m_Finished;
		public bool Started => m_Started;

		public Mobile Initiator => m_Initiator;
		public ArrayList Participants => m_Participants;
		public Ruleset Ruleset => m_Ruleset;
		public Arena Arena => m_Arena;

		private bool CantDoAnything( Mobile mob )
		{
			if ( m_EventGame != null )
				return m_EventGame.CantDoAnything( mob );

				return false;
		}

		public static bool IsFreeConsume( Mobile mob )
		{
			if ( !(mob is PlayerMobile pm) || pm.DuelContext?.m_EventGame == null )
				return false;

			return pm.DuelContext.m_EventGame.FreeConsume;
		}

		public void DelayBounce( TimeSpan ts, Mobile mob, Container corpse )
		{
			Timer.DelayCall( ts, new TimerStateCallback( DelayBounce_Callback ), new object[]{ mob, corpse } );
		}

		public static bool AllowSpecialMove( Mobile from, string name, SpecialMove move )
		{
			if ( !(from is PlayerMobile pm) )
				return true;

			DuelContext dc = pm.DuelContext;

			// No DuelContext, or InstaAllowSpecialMove
			return dc?.InstAllowSpecialMove( from, name, move ) != false;
		}

		public bool InstAllowSpecialMove( Mobile from, string name, SpecialMove move )
		{

			if ( !m_StartedBeginCountdown )
				return true;

			DuelPlayer pl = Find( from );

			if ( pl == null || pl.Eliminated )
				return true;

			if ( CantDoAnything( from ) )
				return false;

			string title = null;

			if ( move is NinjaMove )
				title = "Bushido";
			else if ( move is SamuraiMove )
				title = "Ninjitsu";


			if ( title == null || name == null || m_Ruleset.GetOption( title, name ) )
				return true;

			from.SendMessage( "The dueling ruleset prevents you from using this move." );
			return false;
		}

		public bool AllowSpellCast( Mobile from, Spell spell )
		{
			if ( !m_StartedBeginCountdown )
				return true;

			DuelPlayer pl = Find( from );

			if ( pl == null || pl.Eliminated )
				return true;

			if ( CantDoAnything( from ) )
				return false;

			if ( spell is Server.Spells.Fourth.RecallSpell )
				from.SendMessage( "You may not cast this spell." );

			string title = null, option = null;

			if ( spell is ArcanistSpell )
			{
				title = "Spellweaving";
				option = spell.Name;
			}
			else if ( spell is PaladinSpell )
			{
				title = "Chivalry";
				option = spell.Name;
			}
			else if ( spell is NecromancerSpell )
			{
				title = "Necromancy";
				option = spell.Name;
			}
			else if ( spell is NinjaSpell )
			{
				title = "Ninjitsu";
				option = spell.Name;
			}
			else if ( spell is SamuraiSpell )
			{
				title = "Bushido";
				option = spell.Name;
			}
			else if ( spell is MagerySpell magerySpell )
			{
				switch( magerySpell.Circle )
				{
					case SpellCircle.First: title = "1st Circle"; break;
					case SpellCircle.Second: title = "2nd Circle"; break;
					case SpellCircle.Third: title = "3rd Circle"; break;
					case SpellCircle.Fourth: title = "4th Circle"; break;
					case SpellCircle.Fifth: title = "5th Circle"; break;
					case SpellCircle.Sixth: title = "6th Circle"; break;
					case SpellCircle.Seventh: title = "7th Circle"; break;
					case SpellCircle.Eighth: title = "8th Circle"; break;
				}

				option = magerySpell.Name;
			}
			else
			{
				title = "Other Spell";
				option = spell.Name;
			}

			if ( title == null || option == null || m_Ruleset.GetOption( title, option ) )
				return true;

			from.SendMessage( "The dueling ruleset prevents you from casting this spell." );
			return false;
		}

		public bool AllowItemEquip( Mobile from, Item item )
		{
			if ( !m_StartedBeginCountdown )
				return true;

			DuelPlayer pl = Find( from );

			if ( pl == null || pl.Eliminated )
				return true;

			if ( item is Dagger || CheckItemEquip( from, item ) )
				return true;

			from.SendMessage( "The dueling ruleset prevents you from equiping this item." );
			return false;
		}

		public static bool AllowSpecialAbility( Mobile from, string name, bool message )
		{
			if ( !(from is PlayerMobile pm) )
				return true;

			DuelContext dc = pm.DuelContext;

			// No DuelContext or InstAllowSpecialAbility
			return dc?.InstAllowSpecialAbility( from, name, message ) != false;
		}

		public bool InstAllowSpecialAbility( Mobile from, string name, bool message )
		{
			if ( !m_StartedBeginCountdown )
				return true;

			DuelPlayer pl = Find( from );

			if ( pl?.Eliminated != false )
				return true;

			if ( CantDoAnything( from ) )
				return false;

			if ( m_Ruleset.GetOption( "Combat Abilities", name ) )
				return true;

			if ( message )
				from.SendMessage( "The dueling ruleset prevents you from using this combat ability." );

			return false;
		}

		public bool CheckItemEquip( Mobile from, Item item )
		{
			if ( item is Fists )
			{
				if ( !m_Ruleset.GetOption( "Weapons", "Wrestling" ) )
					return false;
			}
			else if ( item is BaseArmor armor )
			{
				if ( armor.ProtectionLevel > ArmorProtectionLevel.Regular && !m_Ruleset.GetOption( "Armor", "Magical" ) )
					return false;

				if ( !Core.AOS && armor.Resource != armor.DefaultResource && !m_Ruleset.GetOption( "Armor", "Colored" ) )
					return false;

				if ( armor is BaseShield && !m_Ruleset.GetOption( "Armor", "Shields" ) )
					return false;
			}
			else if ( item is BaseWeapon weapon )
			{
				if ( (weapon.DamageLevel > WeaponDamageLevel.Regular || weapon.AccuracyLevel > WeaponAccuracyLevel.Regular) && !m_Ruleset.GetOption( "Weapons", "Magical" ) )
					return false;

				if ( !Core.AOS && weapon.Resource != CraftResource.Iron && weapon.Resource != CraftResource.None && !m_Ruleset.GetOption( "Weapons", "Runics" ) )
					return false;

				if ( weapon is BaseRanged && !m_Ruleset.GetOption( "Weapons", "Ranged" ) )
					return false;

				if ( !(weapon is BaseRanged) && !m_Ruleset.GetOption( "Weapons", "Melee" ) )
					return false;

				if ( weapon.PoisonCharges > 0 && weapon.Poison != null && !m_Ruleset.GetOption( "Weapons", "Poisoned" ) )
					return false;

				if ( weapon is BaseWand && !m_Ruleset.GetOption( "Items", "Wands" ) )
					return false;
			}

			return true;
		}

		public bool AllowSkillUse( Mobile from, SkillName skill )
		{
			if ( !m_StartedBeginCountdown )
				return true;

			DuelPlayer pl = Find( from );

			if ( pl == null || pl.Eliminated )
				return true;

			if ( CantDoAnything( from ) )
				return false;

			int id = (int)skill;

			if ( id >= 0 && id < SkillInfo.Table.Length )
			{
				if ( m_Ruleset.GetOption( "Skills", SkillInfo.Table[id].Name ) )
					return true;
			}

			from.SendMessage( "The dueling ruleset prevents you from using this skill." );
			return false;
		}

		public bool AllowItemUse( Mobile from, Item item )
		{
			if ( !m_StartedBeginCountdown )
				return true;

			DuelPlayer pl = Find( from );

			if ( pl == null || pl.Eliminated )
				return true;

			if ( !(item is BaseRefreshPotion) )
			{
				if ( CantDoAnything( from ) )
					return false;
			}

			string title = null, option = null;

			if ( item is BasePotion )
			{
				title = "Potions";

				if ( item is BaseAgilityPotion )
					option = "Agility";
				else if ( item is BaseCurePotion )
					option = "Cure";
				else if ( item is BaseHealPotion )
					option = "Heal";
				else if ( item is NightSightPotion )
					option = "Nightsight";
				else if ( item is BasePoisonPotion )
					option = "Poison";
				else if ( item is BaseStrengthPotion )
					option = "Strength";
				else if ( item is BaseExplosionPotion )
					option = "Explosion";
				else if ( item is BaseRefreshPotion )
					option = "Refresh";
			}
			else if ( item is Bandage )
			{
				title = "Items";
				option = "Bandages";
			}
			else if ( item is TrappableContainer container )
			{
				if ( container.TrapType != TrapType.None )
				{
					title = "Items";
					option = "Trapped Containers";
				}
			}
			else if ( item is Bola )
			{
				title = "Items";
				option = "Bolas";
			}
			else if ( item is OrangePetals )
			{
				title = "Items";
				option = "Orange Petals";
			}
			else if ( item is EtherealMount || item.Layer == Layer.Mount )
			{
				title = "Items";
				option = "Mounts";
			}
			else if ( item is LeatherNinjaBelt )
			{
				title = "Items";
				option = "Shurikens";
			}
			else if ( item is Fukiya )
			{
				title = "Items";
				option = "Fukiya Darts";
			}
			else if ( item is FireHorn )
			{
				title = "Items";
				option = "Fire Horns";
			}
			else if ( item is BaseWand )
			{
				title = "Items";
				option = "Wands";
			}

			if ( title != null && option != null && m_StartedBeginCountdown && !m_Started )
			{
				from.SendMessage( "You may not use this item before the duel begins." );
				return false;
			}
			if ( item is BasePotion && !(item is BaseExplosionPotion) && !(item is BaseRefreshPotion) && IsSuddenDeath )
			{
				from.SendMessage( 0x22, "You may not drink potions in sudden death." );
				return false;
			}
			if ( item is Bandage && IsSuddenDeath )
			{
				from.SendMessage( 0x22, "You may not use bandages in sudden death." );
				return false;
			}

			if ( title == null || option == null || m_Ruleset.GetOption( title, option ) )
				return true;

			from.SendMessage( "The dueling ruleset prevents you from using this item." );
			return false;
		}

		private void DelayBounce_Callback( object state )
		{
			object[] states = (object[])state;
			Mobile mob = (Mobile) states[0];
			Container corpse = (Container) states[1];

			RemoveAggressions( mob );
			SendOutside( mob );
			Refresh( mob, corpse );
			Debuff( mob );
			CancelSpell( mob );
			mob.Frozen = false;
		}

		public void OnMapChanged( Mobile mob )
		{
			OnLocationChanged( mob );
		}

		public void OnLocationChanged( Mobile mob )
		{
			if ( !m_Registered || !m_StartedBeginCountdown || m_Finished )
				return;

			Arena arena = m_Arena;

			if ( arena == null )
				return;

			if ( mob.Map == arena.Facet && arena.Bounds.Contains( mob.Location ) )
				return;

			DuelPlayer pl = Find( mob );

			if ( pl == null || pl.Eliminated )
				return;

			if ( mob.Map == Map.Internal ) {
				// they've logged out

				if ( mob.LogoutMap == arena.Facet && arena.Bounds.Contains( mob.LogoutLocation ) ) {
					// they logged out inside the arena.. set them to eject on login

					mob.LogoutLocation = arena.Outside;
				}
			}

			pl.Eliminated = true;

			mob.LocalOverheadMessage( MessageType.Regular, 0x22, false, "You have forfeited your position in the duel." );
			mob.NonlocalOverheadMessage( MessageType.Regular, 0x22, false, String.Format( "{0} has forfeited by leaving the dueling arena.", mob.Name ) );

			Participant winner = CheckCompletion();

			if ( winner != null )
				Finish( winner );
		}

		private bool m_Yielding;

		public void OnDeath( Mobile mob, Container corpse )
		{
			if ( !m_Registered || !m_Started )
				return;

			DuelPlayer pl = Find( mob );

			if ( pl != null && !pl.Eliminated )
			{
				if ( m_EventGame != null && !m_EventGame.OnDeath( mob, corpse ) )
					return;

				pl.Eliminated = true;

				if ( mob.Poison != null )
					mob.Poison = null;

				Requip( mob, corpse );
				DelayBounce( TimeSpan.FromSeconds( 4.0 ), mob, corpse );

				Participant winner = CheckCompletion();

				if ( winner != null )
				{
					Finish( winner );
				}
				else if ( !m_Yielding )
				{
					mob.LocalOverheadMessage( MessageType.Regular, 0x22, false, "You have been defeated." );
					mob.NonlocalOverheadMessage( MessageType.Regular, 0x22, false, String.Format( "{0} has been defeated.", mob.Name ) );
				}
			}
		}

		public bool CheckFull()
		{
			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				if ( p.HasOpenSlot )
					return false;
			}

			return true;
		}

		public void Requip( Mobile from, Container cont )
		{
			if ( !(cont is Corpse corpse) )
				return;

			List<Item> items = new List<Item>( corpse.Items );

			bool didntFit = false;

			Container pack = from.Backpack;

			for ( int i = 0; !didntFit && i < items.Count; ++i )
			{
				Item item = items[i];

				if ( (item.Layer == Layer.Hair || item.Layer == Layer.FacialHair) || !item.Movable )
					continue;

				if ( pack != null )
					pack.DropItem( item );
				else
					didntFit = true;
			}

			corpse.Carved = true;

			if ( corpse.ItemID == 0x2006 )
			{
				corpse.ProcessDelta();
				corpse.SendRemovePacket();
				corpse.ItemID = Utility.Random( 0xECA, 9 ); // bone graphic
				corpse.Hue = 0;
				corpse.ProcessDelta();

				Mobile killer = from.FindMostRecentDamager( false );

				if ( killer != null && killer.Player )
					killer.AddToBackpack( new Head( m_Tournament == null ? HeadType.Duel : HeadType.Tournament, from.Name ) );
			}

			from.PlaySound( 0x3E3 );

			if (didntFit)
				from.SendLocalizedMessage(1062472); // You gather some of your belongings. The rest remain on the corpse.
			else
				from.SendLocalizedMessage(1062471); // You quickly gather all of your belongings.

		}

		public void Refresh( Mobile mob, Container cont )
		{
			if ( !mob.Alive )
			{
				mob.Resurrect();

				if ( mob.FindItemOnLayer( Layer.OuterTorso ) is DeathRobe robe )
					robe.Delete();

				if ( cont is Corpse corpse )
				{
					for ( int i = 0; i < corpse.EquipItems.Count; ++i )
					{
						Item item = corpse.EquipItems[i];

						if ( item.Movable && item.Layer != Layer.Hair && item.Layer != Layer.FacialHair && item.IsChildOf( mob.Backpack ) )
							mob.EquipItem( item );
					}
				}
			}

			mob.Hits = mob.HitsMax;
			mob.Stam = mob.StamMax;
			mob.Mana = mob.ManaMax;

			mob.Poison = null;
		}

		public void SendOutside( Mobile mob )
		{
			if ( m_Arena == null )
				return;

			mob.Combatant = null;
			mob.MoveToWorld( m_Arena.Outside, m_Arena.Facet );
		}

		private Point3D m_GatePoint;
		private Map m_GateFacet;

		public void Finish( Participant winner )
		{
			if ( m_Finished )
				return;

			EndAutoTie();
			StopSDTimers();

			m_Finished = true;

			for ( int i = 0; i < winner.Players.Length; ++i )
			{
				DuelPlayer pl = winner.Players[i];

				if ( pl != null && !pl.Eliminated )
					DelayBounce( TimeSpan.FromSeconds( 8.0 ), pl.Mobile, null );
			}

			winner.Broadcast( 0x59, null, winner.Players.Length == 1 ? "{0} has won the duel." : "{0} and {1} team have won the duel.", winner.Players.Length == 1 ? "You have won the duel." : "Your team has won the duel." );

			if ( m_Tournament != null && winner.TournyPart != null )
			{
				m_Match.Winner = winner.TournyPart;
				winner.TournyPart.WonMatch( m_Match );
				m_Tournament.HandleWon( m_Arena, m_Match, winner.TournyPart );
			}

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant loser = (Participant)m_Participants[i];

				if ( loser != winner )
				{
					loser.Broadcast( 0x22, null, loser.Players.Length == 1 ? "{0} has lost the duel." : "{0} and {1} team have lost the duel.", loser.Players.Length == 1 ? "You have lost the duel." : "Your team has lost the duel." );

					if ( m_Tournament != null && loser.TournyPart != null )
						loser.TournyPart.LostMatch( m_Match );
				}

				for ( int j = 0; j < loser.Players.Length; ++j )
				{
					if ( loser.Players[j] != null )
					{
						RemoveAggressions( loser.Players[j].Mobile );
						loser.Players[j].Mobile.Delta( MobileDelta.Noto );
						loser.Players[j].Mobile.CloseGump( typeof( BeginGump ) );

						if ( m_Tournament != null )
							loser.Players[j].Mobile.SendEverything();
					}
				}
			}

			if ( IsOneVsOne )
			{
				DuelPlayer dp1 = ((Participant)m_Participants[0]).Players[0];
				DuelPlayer dp2 = ((Participant)m_Participants[1]).Players[0];

				if ( dp1 != null && dp2 != null )
				{
					Award( dp1.Mobile, dp2.Mobile, dp1.Participant == winner );
					Award( dp2.Mobile, dp1.Mobile, dp2.Participant == winner );
				}
			}

			if ( m_EventGame != null )
				m_EventGame.OnStop();

			Timer.DelayCall( TimeSpan.FromSeconds( 9.0 ), new TimerCallback( UnregisterRematch ) );
		}

		public void Award( Mobile us, Mobile them, bool won )
		{
			Ladder ladder = ( m_Arena == null ? Ladder.Instance : m_Arena.AcquireLadder() );

			if ( ladder == null )
				return;

			LadderEntry ourEntry = ladder.Find( us );
			LadderEntry theirEntry = ladder.Find( them );

			if ( ourEntry == null || theirEntry == null )
				return;

			int xpGain = Ladder.GetExperienceGain( ourEntry, theirEntry, won );

			if ( xpGain == 0 )
				return;

			if ( m_Tournament != null )
				xpGain *= ( xpGain > 0 ? 5 : 2 );

			if ( won )
				++ourEntry.Wins;
			else
				++ourEntry.Losses;

			int oldLevel = Ladder.GetLevel( ourEntry.Experience );

			ourEntry.Experience += xpGain;

			if ( ourEntry.Experience < 0 )
				ourEntry.Experience = 0;

			ladder.UpdateEntry( ourEntry );

			int newLevel = Ladder.GetLevel( ourEntry.Experience );

			if ( newLevel > oldLevel )
				us.SendMessage( 0x59, "You have achieved level {0}!", newLevel );
			else if ( newLevel < oldLevel )
				us.SendMessage( 0x22, "You have lost a level. You are now at {0}.", newLevel );
		}

		public void UnregisterRematch()
		{
			Unregister(true);
		}

		public void Unregister()
		{
			Unregister(false);
		}

		public void Unregister( bool queryRematch )
		{
			DestroyWall();

			if ( !m_Registered )
				return;

			m_Registered = false;

			if ( m_Arena != null )
				m_Arena.Evict();

			StopSDTimers();

			Type[] types = new[]{ typeof( BeginGump ), typeof( DuelContextGump ), typeof( ParticipantGump ), typeof( PickRulesetGump ), typeof( ReadyGump ), typeof( ReadyUpGump ), typeof( RulesetGump ) };

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					if ( pl.Mobile is PlayerMobile mobile )
						mobile.DuelPlayer = null;

					for ( int k = 0; k < types.Length; ++k )
						pl.Mobile.CloseGump( types[k] );
				}
			}

			if ( queryRematch && m_Tournament == null )
				QueryRematch();
		}

		public void QueryRematch()
		{
			DuelContext dc = new DuelContext( m_Initiator, m_Ruleset.Layout, false );

			dc.m_Ruleset = m_Ruleset;
			dc.m_Rematch = true;

			dc.m_Participants.Clear();

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant oldPart = (Participant)m_Participants[i];
				Participant newPart = new Participant( dc, oldPart.Players.Length );

				for ( int j = 0; j < oldPart.Players.Length; ++j )
				{
					DuelPlayer oldPlayer = oldPart.Players[j];

					if ( oldPlayer != null )
						newPart.Players[j] = new DuelPlayer( oldPlayer.Mobile, newPart );
				}

				dc.m_Participants.Add( newPart );
			}

			dc.CloseAllGumps();
			dc.SendReadyUpGump();
		}

		public DuelPlayer Find( Mobile mob )
		{
			if ( mob is PlayerMobile pm )
			{
				if ( pm.DuelContext == this )
					return pm.DuelPlayer;

				return null;
			}

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];
				DuelPlayer pl = p.Find( mob );

				if ( pl != null )
					return pl;
			}

			return null;
		}

		public bool IsAlly( Mobile m1, Mobile m2 )
		{
			DuelPlayer pl1 = Find( m1 );
			DuelPlayer pl2 = Find( m2 );

			return ( pl1 != null && pl2 != null && pl1.Participant == pl2.Participant );
		}

		public Participant CheckCompletion()
		{
			Participant winner = null;

			bool hasWinner = false;
			int eliminated = 0;

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				if ( p.Eliminated )
				{
					++eliminated;

					if ( eliminated == (m_Participants.Count - 1) )
						hasWinner = true;
				}
				else
				{
					winner = p;
				}
			}

			if ( hasWinner )
				return winner == null ? (Participant) m_Participants[0] : winner;

			return null;
		}

		private Timer m_Countdown;

		public void StartCountdown( int count, CountdownCallback cb )
		{
			cb(count);
			m_Countdown=Timer.DelayCall( TimeSpan.FromSeconds( 1.0 ), TimeSpan.FromSeconds( 1.0 ), count, new TimerStateCallback( Countdown_Callback ), new object[]{ count-1, cb } );
		}

		public void StopCountdown()
		{
			if ( m_Countdown != null )
				m_Countdown.Stop();

			m_Countdown = null;
		}

		private void Countdown_Callback( object state )
		{
			object[] states = (object[])state;

			int count = (int)states[0];
			CountdownCallback cb = (CountdownCallback)states[1];

			if ( count==0 )
			{
				if ( m_Countdown != null )
					m_Countdown.Stop();

				m_Countdown=null;
			}

			cb( count );

			states[0] = count - 1;
		}

		private Timer m_AutoTieTimer;
		private bool m_Tied;

		public bool Tied => m_Tied;

		private bool m_IsSuddenDeath;

		public bool IsSuddenDeath{ get => m_IsSuddenDeath;
			set => m_IsSuddenDeath = value;
		}

		private Timer m_SDWarnTimer, m_SDActivateTimer;

		public void StopSDTimers()
		{
			if ( m_SDWarnTimer != null )
				m_SDWarnTimer.Stop();

			m_SDWarnTimer = null;

			if ( m_SDActivateTimer != null )
				m_SDActivateTimer.Stop();

			m_SDActivateTimer = null;
		}

		public void StartSuddenDeath( TimeSpan timeUntilActive )
		{
			if ( m_SDWarnTimer != null )
				m_SDWarnTimer.Stop();

			m_SDWarnTimer = Timer.DelayCall( TimeSpan.FromMinutes( timeUntilActive.TotalMinutes * 0.9 ), new TimerCallback( WarnSuddenDeath ) );

			if ( m_SDActivateTimer != null )
				m_SDActivateTimer.Stop();

			m_SDActivateTimer = Timer.DelayCall( timeUntilActive, new TimerCallback( ActivateSuddenDeath ) );
		}

		public void WarnSuddenDeath()
		{
			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null || pl.Eliminated )
						continue;

					pl.Mobile.SendSound( 0x1E1 );
					pl.Mobile.SendMessage( 0x22, "Warning! Warning! Warning!" );
					pl.Mobile.SendMessage( 0x22, "Sudden death will be active soon!" );
				}
			}

			if ( m_Tournament != null )
				m_Tournament.Alert( m_Arena, "Sudden death will be active soon!" );

			if ( m_SDWarnTimer != null )
				m_SDWarnTimer.Stop();

			m_SDWarnTimer = null;
		}

		public static bool CheckSuddenDeath( Mobile mob )
		{
			return mob is PlayerMobile pm && pm.DuelPlayer?.Eliminated == false && pm.DuelContext?.IsSuddenDeath == true;
		}

		public void ActivateSuddenDeath()
		{
			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null || pl.Eliminated )
						continue;

					pl.Mobile.SendSound( 0x1E1 );
					pl.Mobile.SendMessage( 0x22, "Warning! Warning! Warning!" );
					pl.Mobile.SendMessage( 0x22, "Sudden death has ACTIVATED. You are now unable to perform any beneficial actions." );
				}
			}

			if ( m_Tournament != null )
				m_Tournament.Alert( m_Arena, "Sudden death has been activated!" );

			m_IsSuddenDeath = true;

			if ( m_SDActivateTimer != null )
				m_SDActivateTimer.Stop();

			m_SDActivateTimer = null;
		}

		public void BeginAutoTie()
		{
			if ( m_AutoTieTimer != null )
				m_AutoTieTimer.Stop();

			TimeSpan ts = ( m_Tournament == null || m_Tournament.TournyType == TournyType.Standard )
				? AutoTieDelay
				: TimeSpan.FromMinutes( 90.0 );

			m_AutoTieTimer = Timer.DelayCall( ts, new TimerCallback( InvokeAutoTie ) );
		}

		public void EndAutoTie()
		{
			if ( m_AutoTieTimer != null )
				m_AutoTieTimer.Stop();

			m_AutoTieTimer = null;
		}

		public void InvokeAutoTie()
		{
			m_AutoTieTimer = null;

			if ( !m_Started || m_Finished )
				return;

			m_Tied = true;
			m_Finished = true;

			StopSDTimers();

			ArrayList remaining = new ArrayList();

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				if ( p.Eliminated )
				{
					p.Broadcast( 0x22, null, p.Players.Length == 1 ? "{0} has lost the duel." : "{0} and {1} team have lost the duel.", p.Players.Length == 1 ? "You have lost the duel." : "Your team has lost the duel." );
				}
				else
				{
					p.Broadcast( 0x59, null, p.Players.Length == 1 ? "{0} has tied the duel due to time expiration." : "{0} and {1} team have tied the duel due to time expiration.", p.Players.Length == 1 ? "You have tied the duel due to time expiration." : "Your team has tied the duel due to time expiration." );

					for ( int j = 0; j < p.Players.Length; ++j )
					{
						DuelPlayer pl = p.Players[j];

						if ( pl != null && !pl.Eliminated )
							DelayBounce( TimeSpan.FromSeconds( 8.0 ), pl.Mobile, null );
					}

					if ( p.TournyPart != null )
						remaining.Add( p.TournyPart );
				}

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl != null )
					{
						pl.Mobile.Delta( MobileDelta.Noto );
						pl.Mobile.SendEverything();
					}
				}
			}

			if ( m_Tournament != null )
				m_Tournament.HandleTie( m_Arena, m_Match, remaining );

			Timer.DelayCall( TimeSpan.FromSeconds( 10.0 ), new TimerCallback( Unregister ) );
		}

		public bool IsOneVsOne
		{
			get
			{
				if ( m_Participants.Count != 2 )
					return false;

				if ( ((Participant)m_Participants[0]).Players.Length != 1 )
					return false;

				if ( ((Participant)m_Participants[1]).Players.Length != 1 )
					return false;

				return true;
			}
		}

		public static void Initialize()
		{
			EventSink.Speech += new SpeechEventHandler( EventSink_Speech );
			EventSink.Login += new LoginEventHandler( EventSink_Login );

			CommandSystem.Register( "vli", AccessLevel.GameMaster, new CommandEventHandler( vli_oc ) );
		}

		private static void vli_oc( CommandEventArgs e )
		{
			e.Mobile.BeginTarget( -1, false, Targeting.TargetFlags.None, new TargetCallback( vli_ot ) );
		}

		private static void vli_ot( Mobile from, object obj )
		{
			if ( obj is PlayerMobile pm )
			{
				Ladder ladder = Ladder.Instance;

				if ( ladder == null )
					return;

				LadderEntry entry = ladder.Find( pm );

				if ( entry != null )
					from.SendGump( new PropertiesGump( from, entry ) );
			}
		}

		private static TimeSpan CombatDelay = TimeSpan.FromSeconds( 30.0 );
		private static TimeSpan AutoTieDelay = TimeSpan.FromMinutes( 15.0 );

		public static bool CheckCombat( Mobile m )
		{
			for ( int i = 0; i < m.Aggressed.Count; ++i )
			{
				AggressorInfo info = m.Aggressed[i];

				if ( info.Defender.Player && (DateTime.UtcNow - info.LastCombatTime) < CombatDelay )
					return true;
			}

			for ( int i = 0; i < m.Aggressors.Count; ++i )
			{
				AggressorInfo info = m.Aggressors[i];

				if ( info.Attacker.Player && (DateTime.UtcNow - info.LastCombatTime) < CombatDelay )
					return true;
			}

			return false;
		}

		private static void EventSink_Login( LoginEventArgs e )
		{
			if ( !(e.Mobile is PlayerMobile pm) )
				return;

			DuelContext dc = pm.DuelContext;

			if ( dc == null )
				return;

			if ( dc.ReadyWait && pm.DuelPlayer.Ready && !dc.Started && !dc.StartedBeginCountdown && !dc.Finished )
			{
				if ( dc.m_Tournament == null )
					pm.SendGump( new ReadyGump( pm, dc, dc.m_ReadyCount ) );
			}
			else if ( dc.ReadyWait && !dc.StartedBeginCountdown && !dc.Started && !dc.Finished )
			{
				if ( dc.m_Tournament == null )
					pm.SendGump( new ReadyUpGump( pm, dc ) );
			}
			else if ( dc.Initiator == pm && !dc.ReadyWait && !dc.StartedBeginCountdown && !dc.Started && !dc.Finished )
				pm.SendGump( new DuelContextGump( pm, dc ) );
		}

		private static void ViewLadder_OnTarget( Mobile from, object obj, object state )
		{
			if ( obj is PlayerMobile pm )
			{
				Ladder ladder = (Ladder)state;

				LadderEntry entry = ladder.Find( pm );

				if ( entry == null )
					return; // sanity

				string text = String.Format( "{{0}} are ranked {0} at level {1}.", LadderGump.Rank( entry.Index + 1 ), Ladder.GetLevel( entry.Experience ) );

				pm.PrivateOverheadMessage( MessageType.Regular, pm.SpeechHue, true, String.Format( text, from==pm?"You":"They" ), from.NetState );
			}
			else if ( obj is Mobile mob )
			{
				if ( mob.Body.IsHuman )
					mob.PrivateOverheadMessage( MessageType.Regular, mob.SpeechHue, false, "I'm not a duelist, and quite frankly, I resent the implication.", from.NetState );
				else
					mob.PrivateOverheadMessage( MessageType.Regular, 0x3B2, true, "It's probably better than you.", from.NetState );
			}
			else
			{
				from.SendMessage( "That's not a player." );
			}
		}

		private static void EventSink_Speech( SpeechEventArgs e )
		{
			if ( e.Handled )
				return;

			if ( !(e.Mobile is PlayerMobile pm) )
				return;

			if ( Insensitive.Contains( e.Speech, "i wish to duel" ) )
			{
				if ( !pm.CheckAlive() )
				{
				}
				else if ( pm.Region.IsPartOf( typeof( Regions.Jail ) ) )
				{
				}
				else if ( CheckCombat( pm ) )
				{
					e.Mobile.SendMessage( 0x22, "You have recently been in combat with another player and must wait before starting a duel." );
				}
				else if ( pm.DuelContext != null )
				{
					if ( pm.DuelContext.Initiator == pm )
						e.Mobile.SendMessage( 0x22, "You have already started a duel." );
					else
						e.Mobile.SendMessage( 0x22, "You have already been challenged in a duel." );
				}
				else if ( TournamentController.IsActive )
				{
					e.Mobile.SendMessage( 0x22, "You may not start a duel while a tournament is active." );
				}
				else
				{
					pm.SendGump( new DuelContextGump( pm, new DuelContext( pm, RulesetLayout.Root ) ) );
					e.Handled = true;
				}
			}
			else if ( Insensitive.Equals( e.Speech, "change arena preferences" ) )
			{
				if ( !pm.CheckAlive() )
				{
				}
				else
				{
					Preferences prefs = Preferences.Instance;

					if ( prefs != null )
					{
						e.Mobile.CloseGump( typeof( PreferencesGump ) );
						e.Mobile.SendGump( new PreferencesGump( e.Mobile, prefs ) );
					}
				}
			}
			else if ( Insensitive.Equals( e.Speech, "showladder" ) )
			{
				e.Blocked=true;
				if ( !pm.CheckAlive() )
				{
				}
				else
				{
					Ladder instance = Ladder.Instance;

					if ( instance == null )
					{
						//pm.SendMessage( "Ladder not yet initialized." );
					}
					else
					{
						LadderEntry entry = instance.Find( pm );

						if ( entry == null )
							return; // sanity

						string text = String.Format( "{{0}} {{1}} ranked {0} at level {1}.", LadderGump.Rank( entry.Index + 1 ), Ladder.GetLevel( entry.Experience ) );

						pm.LocalOverheadMessage( MessageType.Regular, pm.SpeechHue, true, String.Format( text, "You", "are" ) );
						pm.NonlocalOverheadMessage( MessageType.Regular, pm.SpeechHue, true, String.Format( text, pm.Name, "is" ) );

						//pm.PublicOverheadMessage( MessageType.Regular, pm.SpeechHue, true, String.Format( "Level {0} with {1} win{2} and {3} loss{4}.", Ladder.GetLevel( entry.Experience ), entry.Wins, entry.Wins==1?"":"s", entry.Losses, entry.Losses==1?"":"es" ) );
						//pm.PublicOverheadMessage( MessageType.Regular, pm.SpeechHue, true, String.Format( "Level {0} with {1} win{2} and {3} loss{4}.", Ladder.GetLevel( entry.Experience ), entry.Wins, entry.Wins==1?"":"s", entry.Losses, entry.Losses==1?"":"es" ) );
					}
				}
			}
			else if ( Insensitive.Equals( e.Speech, "viewladder" ) )
			{
				e.Blocked=true;

				if ( !pm.CheckAlive() )
				{
				}
				else
				{
					Ladder instance = Ladder.Instance;

					if ( instance == null )
					{
						//pm.SendMessage( "Ladder not yet initialized." );
					}
					else
					{
						pm.SendMessage( "Target a player to view their ranking and level." );
						pm.BeginTarget( 16, false, Targeting.TargetFlags.None, new TargetStateCallback( ViewLadder_OnTarget ), instance );
					}
				}
			}
			else if ( Insensitive.Contains( e.Speech, "i yield" ) )
			{
				if ( !pm.CheckAlive() )
				{
				}
				else if ( pm.DuelContext == null )
				{
				}
				else if ( pm.DuelContext.Finished )
				{
					e.Mobile.SendMessage( 0x22, "The duel is already finished." );
				}
				else if ( !pm.DuelContext.Started )
				{
					DuelContext dc = pm.DuelContext;
					Mobile init = dc.Initiator;

					if ( pm.DuelContext.StartedBeginCountdown )
					{
						e.Mobile.SendMessage( 0x22, "The duel has not yet started." );
					}
					else
					{
						DuelPlayer pl = pm.DuelContext.Find( pm );

						if ( pl == null )
							return;

						Participant p = pl.Participant;

						if ( !pm.DuelContext.ReadyWait ) // still setting stuff up
						{
							p.Broadcast( 0x22, null, "{0} has yielded.", "You have yielded." );

							if ( init == pm )
							{
								dc.Unregister();
							}
							else
							{
								p.Nullify( pl );
								pm.DuelPlayer=null;

								NetState ns = init.NetState;

								if ( ns != null )
								{
									foreach ( Gump g in ns.Gumps )
									{
										if (g is ParticipantGump pg && pg.Participant == p)
										{
											init.SendGump( new ParticipantGump( init, dc, p ) );
											break;
										}
										if ( g is DuelContextGump dcg && dcg.Context == dc )
										{
											init.SendGump( new DuelContextGump( init, dc ) );
											break;
										}
									}
								}
							}
						}
						else if ( !pm.DuelContext.StartedReadyCountdown ) // at ready stage
						{
							p.Broadcast( 0x22, null, "{0} has yielded.", "You have yielded." );

							dc.m_Yielding=true;
							dc.RejectReady( pm, null );
							dc.m_Yielding=false;

							if ( init == pm )
							{
								dc.Unregister();
							}
							else if ( dc.m_Registered )
							{
								p.Nullify( pl );
								pm.DuelPlayer=null;

								NetState ns = init.NetState;

								if ( ns != null )
								{
									bool send = true;

									foreach ( Gump g in ns.Gumps )
									{
										if ( g is ParticipantGump pg && pg.Participant == p )
										{
											init.SendGump( new ParticipantGump( init, dc, p ) );
											send=false;
											break;
										}

										if ( g is DuelContextGump dcg && dcg.Context == dc )
										{
											init.SendGump( new DuelContextGump( init, dc ) );
											send=false;
											break;
										}
									}

									if ( send )
										init.SendGump( new DuelContextGump( init, dc ) );
								}
							}
						}
						else
						{
							pm.DuelContext.m_Countdown?.Stop();
							pm.DuelContext.m_Countdown = null;

							pm.DuelContext.m_StartedReadyCountdown=false;
							p.Broadcast( 0x22, null, "{0} has yielded.", "You have yielded." );

							dc.m_Yielding=true;
							dc.RejectReady( pm, null );
							dc.m_Yielding=false;

							if ( init == pm )
							{
								dc.Unregister();
							}
							else if ( dc.m_Registered )
							{
								p.Nullify( pl );
								pm.DuelPlayer=null;

								NetState ns = init.NetState;

								if ( ns != null )
								{
									bool send = true;

									foreach ( Gump g in ns.Gumps )
									{
										if ( g is ParticipantGump pg && pg.Participant == p )
										{
											init.SendGump( new ParticipantGump( init, dc, p ) );
											send=false;
											break;
										}
										if ( g is DuelContextGump dcg && dcg.Context == dc )
										{
											init.SendGump( new DuelContextGump( init, dc ) );
											send=false;
											break;
										}
									}

									if ( send )
										init.SendGump( new DuelContextGump( init, dc ) );
								}
							}
						}
					}
				}
				else
				{
					DuelPlayer pl = pm.DuelContext.Find( pm );

					if ( pl != null )
					{
						if ( pm.DuelContext.IsOneVsOne )
						{
							e.Mobile.SendMessage( 0x22, "You may not yield a 1 on 1 match." );
						}
						else if ( pl.Eliminated )
						{
							e.Mobile.SendMessage( 0x22, "You have already been eliminated." );
						}
						else
						{
							pm.LocalOverheadMessage( MessageType.Regular, 0x22, false, "You have yielded." );
							pm.NonlocalOverheadMessage( MessageType.Regular, 0x22, false, String.Format( "{0} has yielded.", pm.Name ) );

							pm.DuelContext.m_Yielding=true;
							pm.Kill();
							pm.DuelContext.m_Yielding=false;

							if ( pm.Alive ) // invul, ...
							{
								pl.Eliminated = true;

								pm.DuelContext.RemoveAggressions( pm );
								pm.DuelContext.SendOutside( pm );
								pm.DuelContext.Refresh( pm, null );
								Debuff( pm );
								CancelSpell( pm );
								pm.Frozen = false;

								Participant winner = pm.DuelContext.CheckCompletion();

								if ( winner != null )
									pm.DuelContext.Finish( winner );
							}
						}
					}
					else
					{
						e.Mobile.SendMessage( 0x22, "BUG: Unable to find duel context." );
					}
				}
			}
		}

		public DuelContext( Mobile initiator, RulesetLayout layout ) : this( initiator, layout, true )
		{
		}

		public DuelContext( Mobile initiator, RulesetLayout layout, bool addNew )
		{
			m_Initiator = initiator;
			m_Participants = new ArrayList();
			m_Ruleset = new Ruleset( layout );
			m_Ruleset.ApplyDefault( layout.Defaults[0] );

			if ( addNew )
			{
				m_Participants.Add( new Participant( this, 1 ) );
				m_Participants.Add( new Participant( this, 1 ) );

				((Participant)m_Participants[0]).Add( initiator );
			}
		}

		public void CloseAllGumps()
		{
			Type[] types = new[]{ typeof( DuelContextGump ), typeof( ParticipantGump ), typeof( RulesetGump ) };
			int[] defs = new[]{ -1, -1, -1 };

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					Mobile mob = pl.Mobile;

					for ( int k = 0; k < types.Length; ++k )
                        mob.CloseGump( types[k] );
						//mob.CloseGump( types[k], defs[k] );
				}
			}
		}

		public void RejectReady( Mobile rejector, string page )
		{
			if ( m_StartedReadyCountdown )
				return; // sanity

			Type[] types = new[]{ typeof( DuelContextGump ), typeof( ReadyUpGump ), typeof( ReadyGump ) };
			int[] defs = new[]{ -1, -1, -1 };

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					pl.Ready = false;

					Mobile mob = pl.Mobile;

					if ( page == null ) // yield
					{
						if ( mob != rejector )
							mob.SendMessage( 0x22, "{0} has yielded.", rejector.Name );
					}
					else
					{
						if ( mob == rejector )
							mob.SendMessage( 0x22, "You have rejected the {0}.", m_Rematch ? "rematch" : page );
						else
							mob.SendMessage( 0x22, "{0} has rejected the {1}.", rejector.Name, m_Rematch ? "rematch" : page );
					}

					for ( int k = 0; k < types.Length; ++k )
                        mob.CloseGump( types[k] );
						//mob.CloseGump( types[k], defs[k] );
				}
			}

			if ( m_Rematch )
				Unregister();
			else if ( !m_Yielding )
				m_Initiator.SendGump( new DuelContextGump( m_Initiator, this ) );

			m_ReadyWait = false;
			m_ReadyCount = 0;
		}

		public void SendReadyGump()
		{
			SendReadyGump( -1 );
		}

		public static void Debuff( Mobile mob )
		{
			mob.RemoveStatMod( "[Magic] Str Offset" );
			mob.RemoveStatMod( "[Magic] Dex Offset" );
			mob.RemoveStatMod( "[Magic] Int Offset" );
			mob.RemoveStatMod( "Concussion" );
			mob.RemoveStatMod( "blood-rose" );
			mob.RemoveStatMod( "clarity-potion" );

			OrangePetals.RemoveContext( mob );

			mob.Paralyzed = false;
			mob.Hidden = false;

			if ( !Core.AOS )
			{
				mob.MagicDamageAbsorb = 0;
				mob.MeleeDamageAbsorb = 0;
				Spells.Second.ProtectionSpell.Registry.Remove( mob );

				Spells.Fourth.ArchProtectionSpell.RemoveEntry( mob );

				mob.EndAction( typeof( DefensiveSpell ) );
			}

			TransformationSpellHelper.RemoveContext( mob, true );
			AnimalForm.RemoveContext( mob, true );

			if ( DisguiseTimers.IsDisguised( mob ) )
				DisguiseTimers.StopTimer( mob );

			if ( !mob.CanBeginAction( typeof( PolymorphSpell ) ) )
			{
				mob.BodyMod = 0;
				mob.HueMod = -1;
				mob.EndAction( typeof( PolymorphSpell ) );
			}

			BaseArmor.ValidateMobile( mob );
			BaseClothing.ValidateMobile( mob );

			mob.Hits = mob.HitsMax;
			mob.Stam = mob.StamMax;
			mob.Mana = mob.ManaMax;

			mob.Poison = null;
		}

		public static void CancelSpell( Mobile mob )
		{
			if ( mob.Spell is Spell spell )
				spell.Disturb( DisturbType.Kill );

			Targeting.Target.Cancel( mob );
		}

		private bool m_StartedBeginCountdown;
		private bool m_StartedReadyCountdown;

		public bool StartedBeginCountdown => m_StartedBeginCountdown;
		public bool StartedReadyCountdown => m_StartedReadyCountdown;

		private class InternalWall : Item
		{
			public InternalWall() : base( 0x80 )
			{
				Movable = false;
			}

			public void Appear( Point3D loc, Map map )
			{
				MoveToWorld( loc, map );

				Effects.SendLocationParticles( this, 0x376A, 9, 10, 5025 );
			}

			public InternalWall( Serial serial ) : base( serial )
			{
			}

			public override void Serialize( GenericWriter writer )
			{
				base.Serialize( writer );

				writer.Write( (int) 0 );
			}

			public override void Deserialize( GenericReader reader )
			{
				base.Deserialize( reader );

				int version = reader.ReadInt();

				Delete();
			}
		}

		private ArrayList m_Walls = new ArrayList();

		public void DestroyWall()
		{
			for ( int i = 0; i < m_Walls.Count; ++i )
				((Item)m_Walls[i]).Delete();

			m_Walls.Clear();
		}

		public void CreateWall()
		{
			if ( m_Arena == null )
				return;

			Point3D start = m_Arena.Points.EdgeWest;
			Point3D wall = m_Arena.Wall;

			int dx = start.X - wall.X;
			int dy = start.Y - wall.Y;
			int rx = dx - dy;
			int ry = dx + dy;

			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( wall, m_Arena.Facet, 0x1F6 );

			for ( int i = -1; i <= 1; ++i )
			{
				Point3D loc = new Point3D( eastToWest ? wall.X + i : wall.X, eastToWest ? wall.Y : wall.Y + i, wall.Z );

				InternalWall created = new InternalWall();

				created.Appear( loc, m_Arena.Facet );

				m_Walls.Add( created );
			}
		}

		public void BuildParties()
		{
			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				if ( p.Players.Length > 1 )
				{
					ArrayList players = new ArrayList();

					for ( int j = 0; j < p.Players.Length; ++j )
					{
						DuelPlayer dp = p.Players[j];

						if ( dp == null )
							continue;

						players.Add( dp.Mobile );
					}

					if ( players.Count > 1 )
					{
						for ( int leaderIndex = 0; (leaderIndex+1) < players.Count; leaderIndex += Party.Capacity )
						{
							Mobile leader = (Mobile) players[leaderIndex];
							Party party = Party.Get( leader );

							if ( party == null )
							{
								leader.Party = party = new Party( leader );
							}
							else if ( party.Leader != leader )
							{
								party.SendPublicMessage( leader, "I leave this party to fight in a duel." );
								party.Remove( leader );
								leader.Party = party = new Party( leader );
							}

							for ( int j = leaderIndex+1; j < players.Count && j < leaderIndex+Party.Capacity; ++j )
							{
								Mobile player = (Mobile)players[j];
								Party existing = Party.Get( player );

								if ( existing == party )
									continue;

								if ( (party.Members.Count + party.Candidates.Count) >= Party.Capacity )
								{
									player.SendMessage( "You could not be added to the team party because it is at full capacity." );
									leader.SendMessage( "{0} could not be added to the team party because it is at full capacity." );
								}
								else
								{
									if ( existing != null )
									{
										existing.SendPublicMessage( player, "I leave this party to fight in a duel." );
										existing.Remove( player );
									}

									party.OnAccept( player, true );
								}
							}
						}
					}
				}
			}
		}

		public void ClearIllegalItems()
		{
			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					ClearIllegalItems( pl.Mobile );
				}
			}
		}

		public void ClearIllegalItems( Mobile mob )
		{
			if ( mob.StunReady && !AllowSpecialAbility( mob, "Stun", false ) )
				mob.StunReady = false;

			if ( mob.DisarmReady && !AllowSpecialAbility( mob, "Disarm", false ) )
				mob.DisarmReady = false;

			Container pack = mob.Backpack;

			if ( pack == null )
				return;

			for ( int i = mob.Items.Count - 1; i >= 0; --i )
			{
				if ( i >= mob.Items.Count )
					continue; // sanity

				Item item = mob.Items[i];

				if ( !CheckItemEquip( mob, item ) )
				{
					pack.DropItem( item );

					if ( item is BaseWeapon )
						mob.SendLocalizedMessage( 1062001, item.Name == null ? "#" + item.LabelNumber.ToString() : item.Name ); // You can no longer wield your ~1_WEAPON~
					else if ( item is BaseArmor && !(item is BaseShield) )
						mob.SendLocalizedMessage( 1062002, item.Name == null ? "#" + item.LabelNumber.ToString() : item.Name ); // You can no longer wear your ~1_ARMOR~
					else
						mob.SendLocalizedMessage( 1062003, item.Name == null ? "#" + item.LabelNumber.ToString() : item.Name ); // You can no longer equip your ~1_SHIELD~
				}
			}

			Item inHand = mob.Holding;

			if ( inHand != null && !CheckItemEquip( mob, inHand ) )
			{
				mob.Holding = null;

				BounceInfo bi = inHand.GetBounce();

				if ( bi.m_Parent == mob )
					pack.DropItem( inHand );
				else
					inHand.Bounce( mob );

				inHand.ClearBounce();
			}
		}

		private void MessageRuleset( Mobile mob ) {
			if ( m_Ruleset == null ) {
				return;
			}

			Ruleset ruleset = m_Ruleset;
			Ruleset basedef = ruleset.Base;

			mob.SendMessage( "Ruleset: {0}", basedef.Title );

			BitArray defs;

			if ( ruleset.Flavors.Count > 0 )
			{
				defs = new BitArray( basedef.Options );

				for ( int i = 0; i < ruleset.Flavors.Count; ++i ) {
					defs.Or( ((Ruleset)ruleset.Flavors[i]).Options );

					mob.SendMessage( " + {0}", ((Ruleset)ruleset.Flavors[i]).Title );
				}
			}
			else
			{
				defs = basedef.Options;
			}

			int changes = 0;

			BitArray opts = ruleset.Options;

			for ( int i = 0; i < opts.Length; ++i )
			{
				if ( defs[i] != opts[i] ) {
					string name = ruleset.Layout.FindByIndex( i );

					if ( name != null ) // sanity
					{
						++changes;

						if ( changes == 1 ) {
							mob.SendMessage( "Modifications:" );
						}

						mob.SendMessage( "{0}: {1}", name, opts[i] ? "enabled" : "disabled" );
					}
				}
			}
		}

		public void SendBeginGump( int count )
		{
			if ( !m_Registered || m_Finished )
				return;

			if ( count == 10 )
			{
				CreateWall();
				BuildParties();
				ClearIllegalItems();
			}
			else if ( count == 0 )
			{
				DestroyWall();
			}

			m_StartedBeginCountdown = true;

			if ( count == 0 )
			{
				m_Started = true;
				BeginAutoTie();
			}

			Type[] types = new[]{ typeof( ReadyGump ), typeof( ReadyUpGump ), typeof( BeginGump ) };

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					Mobile mob = pl.Mobile;

					if ( count > 0 )
					{
						if ( count == 10 )
							CloseAndSendGump( mob, new BeginGump( count ), types );

						mob.Frozen = true;
					}
					else
					{
						mob.CloseGump( typeof( BeginGump ) );
						mob.Frozen = false;
					}
				}
			}
		}

		private ArrayList m_Entered = new ArrayList();

		private class ReturnEntry
		{
			private Mobile m_Mobile;
			private Point3D m_Location;
			private Map m_Facet;
			private DateTime m_Expire;

			public Mobile Mobile => m_Mobile;
			public Point3D Location => m_Location;
			public Map Facet => m_Facet;

			public void Return()
			{
				if ( m_Facet == Map.Internal || m_Facet == null )
					return;

				if ( m_Mobile.Map == Map.Internal )
				{
					m_Mobile.LogoutLocation = m_Location;
					m_Mobile.LogoutMap = m_Facet;
				}
				else
				{
					m_Mobile.Location = m_Location;
					m_Mobile.Map = m_Facet;
				}
			}

			public ReturnEntry( Mobile mob )
			{
				m_Mobile = mob;

				Update();
			}

			public ReturnEntry( Mobile mob, Point3D loc, Map facet )
			{
				m_Mobile = mob;
				m_Location = loc;
				m_Facet = facet;
				m_Expire = DateTime.UtcNow + TimeSpan.FromMinutes( 30.0 );
			}

			public bool Expired => ( DateTime.UtcNow >= m_Expire );

			public void Update()
			{
				m_Expire = DateTime.UtcNow + TimeSpan.FromMinutes( 30.0 );

				if ( m_Mobile.Map == Map.Internal )
				{
					m_Facet = m_Mobile.LogoutMap;
					m_Location = m_Mobile.LogoutLocation;
				}
				else
				{
					m_Facet = m_Mobile.Map;
					m_Location = m_Mobile.Location;
				}
			}
		}

		private class ExitTeleporter : Item
		{
			private ArrayList m_Entries;

			public override string DefaultName => "return teleporter";

			public ExitTeleporter() : base( 0x1822 )
			{
				m_Entries = new ArrayList();

				Hue = 0x482;
				Movable = false;
			}

			public void Register( Mobile mob )
			{
				ReturnEntry entry = Find( mob );

				if ( entry != null )
				{
					entry.Update();
					return;
				}

				m_Entries.Add( new ReturnEntry( mob ) );
			}

			private ReturnEntry Find( Mobile mob )
			{
				for ( int i = 0; i < m_Entries.Count; ++i )
				{
					ReturnEntry entry = (ReturnEntry)m_Entries[i];

					if ( entry.Mobile == mob )
						return entry;
					else if ( entry.Expired )
						m_Entries.RemoveAt( i-- );
				}

				return null;
			}

			public override bool OnMoveOver( Mobile m )
			{
				if ( !base.OnMoveOver( m ) )
					return false;

				ReturnEntry entry = Find( m );

				if ( entry != null )
				{
					entry.Return();

					Effects.PlaySound( GetWorldLocation(), Map, 0x1FE );
					Effects.PlaySound( m.Location, m.Map, 0x1FE );

					m_Entries.Remove( entry );

					return false;
				}
				else
				{
					m.SendLocalizedMessage( 1049383 ); // The teleporter doesn't seem to work for you.
					return true;
				}
			}

			public ExitTeleporter( Serial serial ) : base( serial )
			{
			}

			public override void Serialize( GenericWriter writer )
			{
				base.Serialize( writer );

				writer.Write( (int) 0 );

				writer.WriteEncodedInt( (int) m_Entries.Count );

				for ( int i = 0; i < m_Entries.Count; ++i )
				{
					ReturnEntry entry = (ReturnEntry)m_Entries[i];

					writer.Write( (Mobile) entry.Mobile );
					writer.Write( (Point3D) entry.Location );
					writer.Write( (Map) entry.Facet );

					if ( entry.Expired )
						m_Entries.RemoveAt( i-- );
				}
			}

			public override void Deserialize( GenericReader reader )
			{
				base.Deserialize( reader );

				int version = reader.ReadInt();

				switch ( version )
				{
					case 0:
					{
						int count = reader.ReadEncodedInt();

						m_Entries = new ArrayList( count );

						for ( int i = 0; i < count; ++i )
						{
							Mobile mob = reader.ReadMobile();
							Point3D loc = reader.ReadPoint3D();
							Map map = reader.ReadMap();

							m_Entries.Add( new ReturnEntry( mob, loc, map ) );
						}

						break;
					}
				}
			}
		}

		private class ArenaMoongate : ConfirmationMoongate
		{
			private ExitTeleporter m_Teleporter;

			public override string DefaultName => "spectator moongate";

			public ArenaMoongate( Point3D target, Map map, ExitTeleporter tp ) : base( target, map )
			{
				m_Teleporter = tp;

				ItemID = 0x1FD4;
				Dispellable = false;

				GumpWidth = 300;
				GumpHeight = 150;
				MessageColor = 0xFFC000;
				MessageString = "Are you sure you wish to spectate this duel?";
				TitleColor = 0x7800;
				TitleNumber = 1062051; // Gate Warning

				Timer.DelayCall( TimeSpan.FromSeconds( 10.0 ), new TimerCallback( Delete ) );
			}

			public override void CheckGate(Mobile m, int range)
			{
				if ( DuelContext.CheckCombat( m ) )
				{
					m.SendMessage( 0x22, "You have recently been in combat with another player and cannot use this moongate." );
				}
				else
				{
					base.CheckGate( m, range );
				}
			}

			public override void UseGate( Mobile m )
			{
				if ( DuelContext.CheckCombat( m ) )
				{
					m.SendMessage( 0x22, "You have recently been in combat with another player and cannot use this moongate." );
				}
				else
				{
					if ( m_Teleporter != null && !m_Teleporter.Deleted )
						m_Teleporter.Register( m );

					base.UseGate( m );
				}
			}

			public void Appear( Point3D loc, Map map )
			{
				Effects.PlaySound( loc, map, 0x20E );
				MoveToWorld( loc, map );
			}

			public ArenaMoongate( Serial serial ) : base( serial )
			{
			}

			public override void Serialize( GenericWriter writer )
			{
				base.Serialize( writer );

				writer.Write( (int) 0 );
			}

			public override void Deserialize( GenericReader reader )
			{
				base.Deserialize( reader );

				int version = reader.ReadInt();

				Delete();
			}
		}

		public void RemoveAggressions( Mobile mob )
		{
			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer dp = (DuelPlayer)p.Players[j];

					if ( dp == null || dp.Mobile == mob )
						continue;

					mob.RemoveAggressed( dp.Mobile );
					mob.RemoveAggressor( dp.Mobile );
					dp.Mobile.RemoveAggressed( mob );
					dp.Mobile.RemoveAggressor( mob );
				}
			}
		}

		public void SendReadyUpGump()
		{
			if ( !m_Registered )
				return;

			m_ReadyWait = true;
			m_ReadyCount = -1;

			Type[] types = new[]{ typeof( ReadyUpGump ) };

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					Mobile mob = pl.Mobile;

					if ( mob != null )
					{
						if ( m_Tournament == null )
							CloseAndSendGump( mob, new ReadyUpGump( mob, this ), types );
					}
				}
			}
		}

		public string ValidateStart()
		{
			if ( m_Tournament == null && TournamentController.IsActive )
				return "a tournament is active";

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer dp = p.Players[j];

					if ( dp == null )
						return "a slot is empty";

					if ( dp.Mobile.Region.IsPartOf( typeof( Regions.Jail ) ) )
						return String.Format( "{0} is in jail", dp.Mobile.Name );

					if ( Sigil.ExistsOn( dp.Mobile ) )
						return String.Format( "{0} is holding a sigil", dp.Mobile.Name );

					if ( !dp.Mobile.Alive )
					{
						if ( m_Tournament == null )
							return String.Format( "{0} is dead", dp.Mobile.Name );
						else
							dp.Mobile.Resurrect();
					}

					if ( m_Tournament == null && CheckCombat( dp.Mobile ) )
						return String.Format( "{0} is in combat", dp.Mobile.Name );

					if ( dp.Mobile.Mounted )
					{
						IMount mount = dp.Mobile.Mount;

						if ( m_Tournament != null && mount != null )
							mount.Rider = null;
						else
							return String.Format( "{0} is mounted", dp.Mobile.Name );
					}
				}
			}

			return null;
		}

		public Arena m_OverrideArena;
		public Tournament m_Tournament;
		public TournyMatch m_Match;
		public EventGame m_EventGame;

		public Tournament Tournament  => m_Tournament;

		public void SendReadyGump( int count )
		{
			if ( !m_Registered )
				return;

			if ( count != -1 )
				m_StartedReadyCountdown = true;

			m_ReadyCount = count;

			if ( count == 0 )
			{
				string error = ValidateStart();

				if ( error != null )
				{
					for ( int i = 0; i < m_Participants.Count; ++i )
					{
						Participant p = (Participant)m_Participants[i];

						for ( int j = 0; j < p.Players.Length; ++j )
						{
							DuelPlayer dp = p.Players[j];

							if ( dp != null )
								dp.Mobile.SendMessage( "The duel could not be started because {0}.", error );
						}
					}

					StartCountdown( 10, new CountdownCallback( SendReadyGump ) );

					return;
				}

				m_ReadyWait = false;

				List<Mobile> players = new List<Mobile>();

				for ( int i = 0; i < m_Participants.Count; ++i )
				{
					Participant p = (Participant)m_Participants[i];

					for ( int j = 0; j < p.Players.Length; ++j )
					{
						DuelPlayer dp = p.Players[j];

						if ( dp != null )
							players.Add( dp.Mobile );
					}
				}

				Arena arena = m_OverrideArena;

				if ( arena == null )
					arena = Arena.FindArena( players );

				if ( arena == null )
				{
					for ( int i = 0; i < m_Participants.Count; ++i )
					{
						Participant p = (Participant)m_Participants[i];

						for ( int j = 0; j < p.Players.Length; ++j )
						{
							DuelPlayer dp = p.Players[j];

							if ( dp != null )
								dp.Mobile.SendMessage( "The duel could not be started because there are no arenas. If you want to stop waiting for a free arena, yield the duel." );
						}
					}

					StartCountdown( 10, new CountdownCallback( SendReadyGump ) );
					return;
				}

				if ( !arena.IsOccupied )
				{
					m_Arena = arena;

					if ( m_Initiator.Map == Map.Internal )
					{
						m_GatePoint = m_Initiator.LogoutLocation;
						m_GateFacet = m_Initiator.LogoutMap;
					}
					else
					{
						m_GatePoint = m_Initiator.Location;
						m_GateFacet = m_Initiator.Map;
					}

					if ( !(arena.Teleporter is ExitTeleporter tp) )
					{
						arena.Teleporter = tp = new ExitTeleporter();
						tp.MoveToWorld( arena.GateOut == Point3D.Zero ? arena.Outside : arena.GateOut, arena.Facet );
					}

					ArenaMoongate mg = new ArenaMoongate( arena.GateIn == Point3D.Zero ? arena.Outside : arena.GateIn, arena.Facet, tp );

					m_StartedBeginCountdown = true;

					for ( int i = 0; i < m_Participants.Count; ++i )
					{
						Participant p = (Participant)m_Participants[i];

						for ( int j = 0; j < p.Players.Length; ++j )
						{
							DuelPlayer pl = p.Players[j];

							if ( pl == null )
								continue;

							tp.Register( pl.Mobile );

							pl.Mobile.Frozen = false; // reset timer just in case
							pl.Mobile.Frozen = true;

							Debuff( pl.Mobile );
							CancelSpell( pl.Mobile );

							pl.Mobile.Delta( MobileDelta.Noto );
						}

						arena.MoveInside( p.Players, i );
					}

					if ( m_EventGame != null )
						m_EventGame.OnStart();

					StartCountdown( 10, new CountdownCallback( SendBeginGump ) );

					mg.Appear( m_GatePoint, m_GateFacet );
				}
				else
				{
					for ( int i = 0; i < m_Participants.Count; ++i )
					{
						Participant p = (Participant)m_Participants[i];

						for ( int j = 0; j < p.Players.Length; ++j )
						{
							DuelPlayer dp = p.Players[j];

							if ( dp != null )
								dp.Mobile.SendMessage( "The duel could not be started because all arenas are full. If you want to stop waiting for a free arena, yield the duel." );
						}
					}

					StartCountdown( 10, new CountdownCallback( SendReadyGump ) );
				}

				return;
			}

			m_ReadyWait = true;

			bool isAllReady = true;

			Type[] types = new[]{ typeof( ReadyGump ) };

			for ( int i = 0; i < m_Participants.Count; ++i )
			{
				Participant p = (Participant)m_Participants[i];

				for ( int j = 0; j < p.Players.Length; ++j )
				{
					DuelPlayer pl = p.Players[j];

					if ( pl == null )
						continue;

					Mobile mob = pl.Mobile;

					if ( pl.Ready )
					{
						if ( m_Tournament == null )
							CloseAndSendGump( mob, new ReadyGump( mob, this, count ), types );
					}
					else
					{
						isAllReady = false;
					}
				}
			}

			if ( count == -1 && isAllReady )
				StartCountdown( 3, new CountdownCallback( SendReadyGump ) );
		}

		public static void CloseAndSendGump( Mobile mob, Gump g, params Type[] types )
		{
			CloseAndSendGump( mob.NetState, g, types );
		}

		public static void CloseAndSendGump( NetState ns, Gump g, params Type[] types )
		{
			if ( ns != null ) {
				Mobile mob = ns.Mobile;

				if ( mob != null ) {
					foreach ( Type type in types ) {
						mob.CloseGump( type );
					}

					mob.SendGump( g );
				}
			}

			/*if ( ns == null )
				return;

			for ( int i = 0; i < types.Length; ++i )
				ns.Send( new CloseGump( Gump.GetTypeID( types[i] ), 0 ) );

			g.SendTo( ns );

			ns.AddGump( g );

			Packet[] packets = new Packet[types.Length + 1];

			for ( int i = 0; i < types.Length; ++i )
				packets[i] = new CloseGump( Gump.GetTypeID( types[i] ), 0 );

			packets[types.Length] = (Packet) typeof( Gump ).InvokeMember( "Compile", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod, null, g, null, null );

			bool compress = ns.CompressionEnabled;
			ns.CompressionEnabled = false;
			ns.Send( BindPackets( compress, packets ) );
			ns.CompressionEnabled = compress;*/
		}

		/*public static Packet BindPackets( bool compress, params Packet[] packets )
		{
			if ( packets.Length == 0 )
				throw new ArgumentException( "No packets to bind", "packets" );

			byte[][] compiled = new byte[packets.Length][];
			int[] lengths = new int[packets.Length];

			int length = 0;

			for ( int i = 0; i < packets.Length; ++i )
			{
				compiled[i] = packets[i].Compile( compress, out lengths[i] );
				length += lengths[i];
			}

			return new BoundPackets( length, compiled, lengths );
		}

		private class BoundPackets : Packet
		{
			public BoundPackets( int length, byte[][] compiled, int[] lengths ) : base( 0, length )
			{
				m_Stream.Seek( 0, System.IO.SeekOrigin.Begin );

				for ( int i = 0; i < compiled.Length; ++i )
					m_Stream.Write( compiled[i], 0, lengths[i] );
			}
		}*/
	}
}