Fixes more casting

Scripts/Engines/Quests/Emino's Undertaking/Items/GuardianBarrier.cs

@@ -23,28 +23,19 @@ namespace Server.Engines.Quests.Ninja
 			if ( this.Y >= m.Y )
 				return true;
 
-			if ( m is BaseCreature )
+			if ( m is BaseCreature creature )
 			{
-				Mobile master = ((BaseCreature)m).GetMaster();
+				Mobile master = creature.GetMaster();
 
 				// Allow creatures to cross from the south to the north only if their master is near to the north
-				if ( master != null && this.Y >= master.Y && master.InRange( this, 4 ) )
+				return master != null && this.Y >= master.Y && master.InRange(this, 4);
-					return true;
-				else
-					return false;
 			}
 
-			PlayerMobile pm = m as PlayerMobile;
+			if ( m is PlayerMobile pm )
-
-			if ( pm != null )
 			{
-				EminosUndertakingQuest qs = pm.Quest as EminosUndertakingQuest;
+				if ( pm.Quest is EminosUndertakingQuest qs )
-
-				if ( qs != null )
 				{
-					SneakPastGuardiansObjective obj = qs.FindObjective( typeof( SneakPastGuardiansObjective ) ) as SneakPastGuardiansObjective;
+					if ( qs.FindObjective( typeof( SneakPastGuardiansObjective ) ) is SneakPastGuardiansObjective obj )
-
-					if ( obj != null )
 					{
 						if ( m.Hidden )
 							return true; // Hidden ninjas can pass

Scripts/Engines/Quests/Emino's Undertaking/Items/NoteForZoel.cs

@@ -22,13 +22,9 @@ namespace Server.Engines.Quests.Ninja
 
 		public override bool CanDrop( PlayerMobile player )
 		{
-			EminosUndertakingQuest qs = player.Quest as EminosUndertakingQuest;
+			return !(player.Quest is EminosUndertakingQuest);
-
-			if ( qs == null )
-				return true;
 
 			//return !qs.IsObjectiveInProgress( typeof( GiveZoelNoteObjective ) );
-			return false;
 		}
 
 		public override void Serialize( GenericWriter writer )

Scripts/Engines/Quests/Emino's Undertaking/Mobiles/Emino.cs

@@ -148,8 +148,7 @@ namespace Server.Engines.Quests.Ninja
 										{
 											bool stolenTreasure = false;
 
-											HallwayWalkObjective walk = qs.FindObjective( typeof( HallwayWalkObjective ) ) as HallwayWalkObjective;
+											if ( qs.FindObjective( typeof( HallwayWalkObjective ) ) is HallwayWalkObjective walk )
-											if ( walk != null )
 												stolenTreasure = walk.StolenTreasure;
 
 											Kama kama = new Kama();

Scripts/Engines/Quests/Emino's Undertaking/Mobiles/Zoel.cs

@@ -70,9 +70,7 @@ namespace Server.Engines.Quests.Ninja
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 

Scripts/Engines/Quests/Haochi's Trials/HaochisTrialsQuest.cs

@@ -128,9 +128,7 @@ namespace Server.Engines.Quests.Samurai
 
 		public static bool HasLostHaochisKatana( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return false;
 
 			QuestSystem qs = pm.Quest;
@@ -139,9 +137,7 @@ namespace Server.Engines.Quests.Samurai
 			{
 				if ( qs.IsObjectiveInProgress( typeof( FifthTrialReturnObjective ) ) )
 				{
-					Container pack = from.Backpack;
+					return ( from.Backpack?.FindItemByType( typeof( HaochisKatana ) ) == null );
-
-					return ( pack == null || pack.FindItemByType( typeof( HaochisKatana ) ) == null );
 				}
 			}
 

Scripts/Engines/Quests/Haochi's Trials/Items/HaochisKatana.cs

@@ -20,13 +20,9 @@ namespace Server.Engines.Quests.Samurai
 
 		public override bool CanDrop( PlayerMobile player )
 		{
-			HaochisTrialsQuest qs = player.Quest as HaochisTrialsQuest;
+			return !(player.Quest is HaochisTrialsQuest );
-
-			if ( qs == null )
-				return true;
 
 			//return !qs.IsObjectiveInProgress( typeof( FifthTrialReturnObjective ) );
-			return false;
 		}
 
 		public override void Serialize( GenericWriter writer )

Scripts/Engines/Quests/Haochi's Trials/Items/HaochisKatanaGenerator.cs

@@ -17,9 +17,7 @@ namespace Server.Engines.Quests.Samurai
 
 		public override bool OnMoveOver( Mobile m )
 		{
-			PlayerMobile player = m as PlayerMobile;
+			if ( m is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 

Scripts/Engines/Quests/Haochi's Trials/Items/HaochisTreasureChest.cs

@@ -53,13 +53,9 @@ namespace Server.Engines.Quests.Samurai
 			if ( from.AccessLevel >= AccessLevel.GameMaster )
 				return true;
 
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player && player.Quest is HaochisTrialsQuest )
-
-			if ( player != null && player.Quest is HaochisTrialsQuest )
 			{
-				FifthTrialIntroObjective obj = player.Quest.FindObjective( typeof( FifthTrialIntroObjective ) ) as FifthTrialIntroObjective;
+				if ( player.Quest.FindObjective( typeof( FifthTrialIntroObjective ) ) is FifthTrialIntroObjective obj )
-
-				if ( obj != null )
 				{
 					if ( obj.StolenTreasure )
 						from.SendLocalizedMessage( 1063247 ); // The guard is watching you carefully!  It would be unwise to remove another item from here.
@@ -73,13 +69,9 @@ namespace Server.Engines.Quests.Samurai
 
 		public override void OnItemLifted( Mobile from, Item item )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player && player.Quest is HaochisTrialsQuest )
-
-			if ( player != null && player.Quest is HaochisTrialsQuest )
 			{
-				FifthTrialIntroObjective obj = player.Quest.FindObjective( typeof( FifthTrialIntroObjective ) ) as FifthTrialIntroObjective;
+				if ( player.Quest.FindObjective( typeof( FifthTrialIntroObjective ) ) is FifthTrialIntroObjective obj )
-
-				if ( obj != null )
 					obj.StolenTreasure = true;
 			}
 

Scripts/Engines/Quests/Haochi's Trials/Items/HonorCandle.cs

@@ -31,14 +31,12 @@ namespace Server.Engines.Quests.Samurai
 
 			if ( !wasBurning && Burning )
 			{
-				PlayerMobile player = from as PlayerMobile;
+				if ( !(from is PlayerMobile player) )
-
-				if ( player == null )
 					return;
 
 				QuestSystem qs = player.Quest;
 
-				if ( qs != null && qs is HaochisTrialsQuest )
+				if ( qs is HaochisTrialsQuest )
 				{
 					QuestObjective obj = qs.FindObjective( typeof( SixthTrialIntroObjective ) );
 

Scripts/Engines/Quests/Haochi's Trials/Mobiles/DeadlyImp.cs

@@ -44,8 +44,7 @@ namespace Server.Engines.Quests.Samurai
 		{
 			base.AggressiveAction( aggressor, criminal );
 
-			PlayerMobile player = aggressor as PlayerMobile;
+			if ( aggressor is PlayerMobile player )
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 				if ( qs is HaochisTrialsQuest )

Scripts/Engines/Quests/Haochi's Trials/Mobiles/FierceDragon.cs

@@ -66,8 +66,7 @@ namespace Server.Engines.Quests.Samurai
 		{
 			base.AggressiveAction( aggressor, criminal );
 
-			PlayerMobile player = aggressor as PlayerMobile;
+			if ( aggressor is PlayerMobile player )
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 				if ( qs is HaochisTrialsQuest )

Scripts/Engines/Quests/Haochi's Trials/Mobiles/Relnia.cs

@@ -44,9 +44,7 @@ namespace Server.Engines.Quests.Samurai
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 
@@ -56,9 +54,7 @@ namespace Server.Engines.Quests.Samurai
 
 					if ( obj != null && !obj.Completed )
 					{
-						Gold gold = dropped as Gold;
+						if ( dropped is Gold gold )
-
-						if ( gold != null )
 						{
 							obj.Complete();
 							qs.AddObjective( new FourthTrialReturnObjective( false ) );

Scripts/Engines/Quests/Solen Matriarch/Mobiles/SolenMatriarch.cs

@@ -37,18 +37,14 @@ namespace Server.Engines.Quests.Matriarch
 			if ( SolenMatriarchQuest.IsFriend( to, this.RedSolen ) )
 				return true;
 
-			SolenMatriarchQuest qs = to.Quest as SolenMatriarchQuest;
+			return to.Quest is SolenMatriarchQuest qs && qs.RedSolen == this.RedSolen;
-
-			return qs != null && qs.RedSolen == this.RedSolen;
 		}
 
 		public override void OnTalk( PlayerMobile player, bool contextMenu )
 		{
 			this.Direction = GetDirectionTo( player );
 
-			SolenMatriarchQuest qs = player.Quest as SolenMatriarchQuest;
+			if ( player.Quest is SolenMatriarchQuest qs && qs.RedSolen == this.RedSolen )
-
-			if ( qs != null && qs.RedSolen == this.RedSolen )
 			{
 				if ( qs.IsObjectiveInProgress( typeof( KillInfiltratorsObjective ) ) )
 				{
@@ -114,15 +110,11 @@ namespace Server.Engines.Quests.Matriarch
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				if ( dropped is Seed )
 				{
-					SolenMatriarchQuest qs = player.Quest as SolenMatriarchQuest;
+					if ( player.Quest is SolenMatriarchQuest qs && qs.RedSolen == this.RedSolen )
-
-					if ( qs != null && qs.RedSolen == this.RedSolen )
 					{
 						SayTo( player, 1054080 ); // Thank you for that plant seed. Those have such wonderful flavor.
 					}
@@ -143,11 +135,11 @@ namespace Server.Engines.Quests.Matriarch
 					dropped.Delete();
 					return true;
 				}
-				else if ( dropped is ZoogiFungus )
+				if ( dropped is ZoogiFungus fungus )
 				{
-					OnGivenFungi( player, (ZoogiFungus)dropped );
+					OnGivenFungi( player, fungus );
 
-					return dropped.Deleted;
+					return fungus.Deleted;
 				}
 			}
 
@@ -160,13 +152,9 @@ namespace Server.Engines.Quests.Matriarch
 
 			if ( from.Alive )
 			{
-				PlayerMobile pm = from as PlayerMobile;
+				if ( from is PlayerMobile pm )
-
-				if ( pm != null )
 				{
-					SolenMatriarchQuest qs = pm.Quest as SolenMatriarchQuest;
+					if ( pm.Quest is SolenMatriarchQuest qs && qs.RedSolen == this.RedSolen )
-
-					if ( qs != null && qs.RedSolen == this.RedSolen )
 					{
 						if ( qs.IsObjectiveInProgress( typeof( ProcessFungiObjective ) ) )
 						{
@@ -213,12 +201,10 @@ namespace Server.Engines.Quests.Matriarch
 
 			protected override void OnTarget( Mobile from, object targeted )
 			{
-				if ( targeted is ZoogiFungus )
+				if ( targeted is ZoogiFungus fungus )
 				{
-					ZoogiFungus fungus = (ZoogiFungus)targeted;
-
 					if ( fungus.IsChildOf( m_From.Backpack ) )
-						m_Matriarch.OnGivenFungi( m_From, (ZoogiFungus)targeted );
+						m_Matriarch.OnGivenFungi( m_From, fungus );
 					else
 						m_From.SendLocalizedMessage( 1042001 ); // That must be in your pack for you to use it.
 				}
@@ -229,9 +215,7 @@ namespace Server.Engines.Quests.Matriarch
 		{
 			this.Direction = GetDirectionTo( player );
 
-			SolenMatriarchQuest qs = player.Quest as SolenMatriarchQuest;
+			if ( player.Quest is SolenMatriarchQuest qs && qs.RedSolen == this.RedSolen )
-
-			if ( qs != null && qs.RedSolen == this.RedSolen )
 			{
 				QuestObjective obj = qs.FindObjective( typeof( ProcessFungiObjective ) );
 

Scripts/Engines/Quests/Study of the Solen Hive/Mobiles/Naturalist.cs

@@ -38,13 +38,9 @@ namespace Server.Engines.Quests.Naturalist
 
 		public override void OnTalk( PlayerMobile player, bool contextMenu )
 		{
-			StudyOfSolenQuest qs = player.Quest as StudyOfSolenQuest;
+			if ( player.Quest is StudyOfSolenQuest qs && qs.Naturalist == this )
-
-			if ( qs != null && qs.Naturalist == this )
 			{
-				StudyNestsObjective study = qs.FindObjective( typeof( StudyNestsObjective ) ) as StudyNestsObjective;
+				if ( qs.FindObjective( typeof( StudyNestsObjective ) ) is StudyNestsObjective study )
-
-				if ( study != null )
 				{
 					if ( !study.Completed )
 					{

Scripts/Engines/Quests/Terrible Hatchlings/Mobiles/AnsellaGryen.cs

@@ -72,9 +72,7 @@ namespace Server.Engines.Quests.Zento
 
 						if ( Utility.RandomBool() )
 						{
-							BaseWeapon weapon = Loot.Construct( Loot.SEWeaponTypes ) as BaseWeapon;
+							if ( Loot.Construct( Loot.SEWeaponTypes ) is BaseWeapon weapon )
-
-							if ( weapon != null )
 							{
 								BaseRunicTool.ApplyAttributesTo( weapon, 3, 10, 30 );
 								cont.DropItem( weapon );
@@ -82,9 +80,7 @@ namespace Server.Engines.Quests.Zento
 						}
 						else
 						{
-							BaseArmor armor = Loot.Construct( Loot.SEArmorTypes ) as BaseArmor;
+							if ( Loot.Construct( Loot.SEArmorTypes ) is BaseArmor armor )
-
-							if ( armor != null )
 							{
 								BaseRunicTool.ApplyAttributesTo( armor, 1, 10, 20 );
 								cont.DropItem( armor );

Scripts/Engines/Quests/The Summoning/Mobiles/Victoria.cs

@@ -53,9 +53,9 @@ namespace Server.Engines.Quests.Doom
 				{
 					foreach ( Item item in GetItemsInRange( AltarRange ) )
 					{
-						if ( item is SummoningAltar )
+						if ( item is SummoningAltar altar )
 						{
-							m_Altar = (SummoningAltar)item;
+							m_Altar = altar;
 							break;
 						}
 					}
@@ -79,18 +79,14 @@ namespace Server.Engines.Quests.Doom
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 
 				if ( qs is TheSummoningQuest )
 				{
-					if ( dropped is DaemonBone )
+					if ( dropped is DaemonBone bones )
 					{
-						DaemonBone bones = (DaemonBone)dropped;
-
 						QuestObjective obj = qs.FindObjective( typeof( CollectBonesObjective ) );
 
 						if ( obj != null && !obj.Completed )

Scripts/Engines/Quests/Uzeraan Turmoil/Items/Cannon.cs

@@ -152,8 +152,8 @@ namespace Server.Engines.Quests.Haven
 		[CommandProperty( AccessLevel.GameMaster )]
 		public MilitiaCanoneer Canoneer
 		{
-			get { return Addon is Cannon ? ((Cannon)Addon).Canoneer : null; }
+			get { return Addon is Cannon cannon ? cannon.Canoneer : null; }
-			set { if ( Addon is Cannon ) ((Cannon)Addon).Canoneer = value; }
+			set { if ( Addon is Cannon cannon ) cannon.Canoneer = value; }
 		}
 
 		public CannonComponent( int itemID ) : base( itemID )

Scripts/Engines/Quests/Uzeraan Turmoil/Items/DaemonBloodChest.cs

@@ -20,9 +20,7 @@ namespace Server.Engines.Quests.Haven
 
 		public override void OnDoubleClick( Mobile from )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player && player.InRange( GetWorldLocation(), 2 ) )
-
-			if ( player != null && player.InRange( GetWorldLocation(), 2 ) )
 			{
 				QuestSystem qs = player.Quest;
 

Scripts/Engines/Quests/Uzeraan Turmoil/Items/QuestDaemonBlood.cs

@@ -19,13 +19,9 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool CanDrop( PlayerMobile player )
 		{
-			UzeraanTurmoilQuest qs = player.Quest as UzeraanTurmoilQuest;
+			return !(player.Quest is UzeraanTurmoilQuest);
-
-			if ( qs == null )
-				return true;
 
 			/*return !qs.IsObjectiveInProgress( typeof( ReturnDaemonBloodObjective ) );*/
-			return false;
 		}
 
 		public override void Serialize( GenericWriter writer )

Scripts/Engines/Quests/Uzeraan Turmoil/Items/QuestDaemonBone.cs

@@ -19,13 +19,9 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool CanDrop( PlayerMobile player )
 		{
-			UzeraanTurmoilQuest qs = player.Quest as UzeraanTurmoilQuest;
+			return !(player.Quest is UzeraanTurmoilQuest);
-
-			if ( qs == null )
-				return true;
 
 			//return !qs.IsObjectiveInProgress( typeof( ReturnDaemonBoneObjective ) );
-			return false;
 		}
 
 		public override void Serialize( GenericWriter writer )

Scripts/Engines/Quests/Uzeraan Turmoil/Items/QuestFertileDirt.cs

@@ -19,13 +19,9 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool CanDrop( PlayerMobile player )
 		{
-			UzeraanTurmoilQuest qs = player.Quest as UzeraanTurmoilQuest;
+			return !(player.Quest is UzeraanTurmoilQuest);
-
-			if ( qs == null )
-				return true;
 
 			//return !qs.IsObjectiveInProgress( typeof( ReturnFertileDirtObjective ) );
-			return false;
 		}
 
 		public override void Serialize( GenericWriter writer )

Scripts/Engines/Quests/Uzeraan Turmoil/Items/SchmendrickApprenticeCorpse.cs

@@ -128,9 +128,7 @@ namespace Server.Engines.Quests.Haven
 			if ( !from.InRange( this.GetWorldLocation(), 2 ) )
 				return;
 
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 

Scripts/Engines/Quests/Uzeraan Turmoil/Items/SchmendrickScrollOfPower.cs

@@ -21,12 +21,8 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool CanDrop( PlayerMobile player )
 		{
-			UzeraanTurmoilQuest qs = player.Quest as UzeraanTurmoilQuest;
+			return !(player.Quest is UzeraanTurmoilQuest qs &&
-
+			         qs.IsObjectiveInProgress(typeof(ReturnScrollOfPowerObjective)));
-			if ( qs == null )
-				return true;
-
-			return !qs.IsObjectiveInProgress( typeof( ReturnScrollOfPowerObjective ) );
 		}
 
 		public override void Serialize( GenericWriter writer )

Scripts/Engines/Quests/Uzeraan Turmoil/Items/UzeraanTurmoilHorn.cs

@@ -10,9 +10,7 @@ namespace Server.Engines.Quests.Haven
 	{
 		public override bool ValidateUse( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			return ( from is PlayerMobile pm && pm.Quest is UzeraanTurmoilQuest );
-
-			return ( pm != null && pm.Quest is UzeraanTurmoilQuest );
 		}
 
 		[Constructible]

Scripts/Engines/Quests/Uzeraan Turmoil/Mobiles/Dryad.cs

@@ -67,9 +67,7 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool CanTalkTo( PlayerMobile to )
 		{
-			UzeraanTurmoilQuest qs = to.Quest as UzeraanTurmoilQuest;
+			return ( to.Quest is UzeraanTurmoilQuest qs && qs.FindObjective( typeof( FindDryadObjective ) ) != null );
-
-			return ( qs != null && qs.FindObjective( typeof( FindDryadObjective ) ) != null );
 		}
 
 		public override void OnTalk( PlayerMobile player, bool contextMenu )
@@ -114,13 +112,9 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
-				UzeraanTurmoilQuest qs = player.Quest as UzeraanTurmoilQuest;
+				if ( player.Quest is UzeraanTurmoilQuest qs && dropped is Apple && UzeraanTurmoilQuest.HasLostFertileDirt( from ) )
-
-				if ( qs != null && dropped is Apple && UzeraanTurmoilQuest.HasLostFertileDirt( from ) )
 				{
 					FocusTo( from );
 
@@ -132,12 +126,10 @@ namespace Server.Engines.Quests.Haven
 						player.SendLocalizedMessage( 1046260 ); // You need to clear some space in your inventory to continue with the quest.  Come back here when you have more space in your inventory.
 						return false;
 					}
-					else
+
-					{
+					dropped.Consume();
-						dropped.Consume();
+					qs.AddConversation( new DryadAppleConversation() );
-						qs.AddConversation( new DryadAppleConversation() );
+					return dropped.Deleted;
-						return dropped.Deleted;
-					}
 				}
 			}
 

Scripts/Engines/Quests/Uzeraan Turmoil/Mobiles/MilitiaCanoneer.cs

@@ -64,10 +64,8 @@ namespace Server.Engines.Quests.Haven
 			if ( m.Player || m is BaseVendor )
 				return false;
 
-			if ( m is BaseCreature )
+			if ( m is BaseCreature bc )
 			{
-				BaseCreature bc = (BaseCreature)m;
-
 				Mobile master = bc.GetMaster();
 				if ( master != null )
 					return IsEnemy( master );

Scripts/Engines/Quests/Uzeraan Turmoil/Mobiles/MilitiaFighter.cs

@@ -62,10 +62,8 @@ namespace Server.Engines.Quests.Haven
 			if ( m.Player || m is BaseVendor )
 				return false;
 
-			if ( m is BaseCreature )
+			if ( m is BaseCreature bc )
 			{
-				BaseCreature bc = (BaseCreature)m;
-
 				Mobile master = bc.GetMaster();
 				if ( master != null )
 					return IsEnemy( master );

Scripts/Engines/Quests/Uzeraan Turmoil/Mobiles/Schmendrick.cs

@@ -54,9 +54,7 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool CanTalkTo( PlayerMobile to )
 		{
-			UzeraanTurmoilQuest qs = to.Quest as UzeraanTurmoilQuest;
+			return ( to.Quest is UzeraanTurmoilQuest qs && qs.FindObjective( typeof( FindSchmendrickObjective ) ) != null );
-
-			return ( qs != null && qs.FindObjective( typeof( FindSchmendrickObjective ) ) != null );
 		}
 
 		public override void OnTalk( PlayerMobile player, bool contextMenu )

Scripts/Engines/Quests/Uzeraan Turmoil/Mobiles/Uzeraan.cs

@@ -198,20 +198,16 @@ namespace Server.Engines.Quests.Haven
 
 		public override bool OnDragDrop( Mobile from, Item dropped )
 		{
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 
 				if ( qs is UzeraanTurmoilQuest )
 				{
-					if ( dropped is UzeraanTurmoilHorn )
+					if ( dropped is UzeraanTurmoilHorn horn )
 					{
 						if ( player.Young )
 						{
-							UzeraanTurmoilHorn horn = (UzeraanTurmoilHorn)dropped;
-
 							if ( horn.Charges < 10 )
 							{
 								SayTo( from, 1049384 ); // I have recharged the item for you.
@@ -248,12 +244,10 @@ namespace Server.Engines.Quests.Haven
 								player.SendLocalizedMessage( 1046260 ); // You need to clear some space in your inventory to continue with the quest.  Come back here when you have more space in your inventory.
 								return false;
 							}
-							else
+
-							{
+							dropped.Delete();
-								dropped.Delete();
+							obj.Complete();
-								obj.Complete();
+							return true;
-								return true;
-							}
 						}
 					}
 					else if ( dropped is QuestFertileDirt )
@@ -293,12 +287,10 @@ namespace Server.Engines.Quests.Haven
 								player.SendLocalizedMessage( 1046260 ); // You need to clear some space in your inventory to continue with the quest.  Come back here when you have more space in your inventory.
 								return false;
 							}
-							else
+
-							{
+							dropped.Delete();
-								dropped.Delete();
+							obj.Complete();
-								obj.Complete();
+							return true;
-								return true;
-							}
 						}
 					}
 					else if ( dropped is QuestDaemonBlood )
@@ -353,12 +345,10 @@ namespace Server.Engines.Quests.Haven
 								player.SendLocalizedMessage( 1046260 ); // You need to clear some space in your inventory to continue with the quest.  Come back here when you have more space in your inventory.
 								return false;
 							}
-							else
+
-							{
+							dropped.Delete();
-								dropped.Delete();
+							obj.Complete();
-								obj.Complete();
+							return true;
-								return true;
-							}
 						}
 					}
 					else if ( dropped is QuestDaemonBone )
@@ -377,12 +367,10 @@ namespace Server.Engines.Quests.Haven
 								player.SendLocalizedMessage( 1046260 ); // You need to clear some space in your inventory to continue with the quest.  Come back here when you have more space in your inventory.
 								return false;
 							}
-							else
+
-							{
+							dropped.Delete();
-								dropped.Delete();
+							obj.Complete();
-								obj.Complete();
+							return true;
-								return true;
-							}
 						}
 					}
 				}

Scripts/Engines/Quests/Uzeraan Turmoil/UzeraanTurmoilQuest.cs

@@ -143,9 +143,7 @@ namespace Server.Engines.Quests.Haven
 
 		public static bool HasLostScrollOfPower( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return false;
 
 			QuestSystem qs = pm.Quest;
@@ -154,9 +152,7 @@ namespace Server.Engines.Quests.Haven
 			{
 				if ( qs.IsObjectiveInProgress( typeof( ReturnScrollOfPowerObjective ) ) )
 				{
-					Container pack = from.Backpack;
+					return ( from.Backpack?.FindItemByType( typeof( SchmendrickScrollOfPower ) ) == null );
-
-					return ( pack == null || pack.FindItemByType( typeof( SchmendrickScrollOfPower ) ) == null );
 				}
 			}
 
@@ -165,9 +161,7 @@ namespace Server.Engines.Quests.Haven
 
 		public static bool HasLostFertileDirt( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return false;
 
 			QuestSystem qs = pm.Quest;
@@ -176,9 +170,7 @@ namespace Server.Engines.Quests.Haven
 			{
 				if ( qs.IsObjectiveInProgress( typeof( ReturnFertileDirtObjective ) ) )
 				{
-					Container pack = from.Backpack;
+					return ( from.Backpack?.FindItemByType( typeof( QuestFertileDirt ) ) == null );
-
-					return ( pack == null || pack.FindItemByType( typeof( QuestFertileDirt ) ) == null );
 				}
 			}
 
@@ -187,9 +179,7 @@ namespace Server.Engines.Quests.Haven
 
 		public static bool HasLostDaemonBlood( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return false;
 
 			QuestSystem qs = pm.Quest;
@@ -198,9 +188,7 @@ namespace Server.Engines.Quests.Haven
 			{
 				if ( qs.IsObjectiveInProgress( typeof( ReturnDaemonBloodObjective ) ) )
 				{
-					Container pack = from.Backpack;
+					return ( from.Backpack?.FindItemByType( typeof( QuestDaemonBlood ) ) == null );
-
-					return ( pack == null || pack.FindItemByType( typeof( QuestDaemonBlood ) ) == null );
 				}
 			}
 
@@ -209,9 +197,7 @@ namespace Server.Engines.Quests.Haven
 
 		public static bool HasLostDaemonBone( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return false;
 
 			QuestSystem qs = pm.Quest;
@@ -220,9 +206,7 @@ namespace Server.Engines.Quests.Haven
 			{
 				if ( qs.IsObjectiveInProgress( typeof( ReturnDaemonBoneObjective ) ) )
 				{
-					Container pack = from.Backpack;
+					return ( from.Backpack?.FindItemByType( typeof( QuestDaemonBone ) ) == null );
-
-					return ( pack == null || pack.FindItemByType( typeof( QuestDaemonBone ) ) == null );
 				}
 			}
 

Scripts/Engines/Quests/Witch Apprentice/Conversations.cs

@@ -427,9 +427,7 @@ namespace Server.Engines.Quests.Hag
 
 		public override void OnRead()
 		{
-			FindIngredientObjective obj = System.FindObjective( typeof( FindIngredientObjective ) ) as FindIngredientObjective;
+			if ( System.FindObjective( typeof( FindIngredientObjective ) ) is FindIngredientObjective obj )
-
-			if ( obj != null )
 				System.AddObjective( new FindIngredientObjective( obj.Ingredients, true ) );
 		}
 	}
@@ -627,9 +625,7 @@ namespace Server.Engines.Quests.Hag
 
 		public override void OnRead()
 		{
-			FindIngredientObjective obj = System.FindObjective( typeof( FindIngredientObjective ) ) as FindIngredientObjective;
+			if ( System.FindObjective( typeof( FindIngredientObjective ) ) is FindIngredientObjective obj )
-
-			if ( obj != null )
 				obj.NextStep();
 		}
 

Scripts/Engines/Quests/Witch Apprentice/Items/HagApprenticeCorpse.cs

@@ -62,17 +62,13 @@ namespace Server.Engines.Quests.Hag
 			if ( !from.InRange( this.GetWorldLocation(), 2 ) )
 				return;
 
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 
 				if ( qs is WitchApprenticeQuest )
 				{
-					FindApprenticeObjective obj = qs.FindObjective( typeof( FindApprenticeObjective ) ) as FindApprenticeObjective;
+					if ( qs.FindObjective( typeof( FindApprenticeObjective ) ) is FindApprenticeObjective obj && !obj.Completed )
-
-					if ( obj != null && !obj.Completed )
 					{
 						if ( obj.Corpse == this )
 						{

Scripts/Engines/Quests/Witch Apprentice/Items/MagicFlute.cs

@@ -25,17 +25,13 @@ namespace Server.Engines.Quests.Hag
 
 			from.PlaySound( 0x3D );
 
-			PlayerMobile player = from as PlayerMobile;
+			if ( from is PlayerMobile player )
-
-			if ( player != null )
 			{
 				QuestSystem qs = player.Quest;
 
 				if ( qs is WitchApprenticeQuest )
 				{
-					FindZeefzorpulObjective obj = qs.FindObjective( typeof( FindZeefzorpulObjective ) ) as FindZeefzorpulObjective;
+					if ( qs.FindObjective( typeof( FindZeefzorpulObjective ) ) is FindZeefzorpulObjective obj && !obj.Completed )
-
-					if ( obj != null && !obj.Completed )
 					{
 						if ( ( player.Map != Map.Trammel && player.Map != Map.Felucca ) || !player.InRange( obj.ImpLocation, 8 ) )
 						{

Scripts/Engines/Quests/Witch Apprentice/Mobiles/Blackheart.cs

@@ -58,9 +58,7 @@ namespace Server.Engines.Quests.Hag
 
 			if ( qs is WitchApprenticeQuest )
 			{
-				FindIngredientObjective obj = qs.FindObjective( typeof( FindIngredientObjective ) ) as FindIngredientObjective;
+				if ( qs.FindObjective( typeof( FindIngredientObjective ) ) is FindIngredientObjective obj && !obj.Completed && obj.Ingredient == Ingredient.Whiskey )
-
-				if ( obj != null && !obj.Completed && obj.Ingredient == Ingredient.Whiskey )
 				{
 					PlaySound( Utility.RandomBool() ? 0x42E : 0x43F );
 
@@ -71,10 +69,7 @@ namespace Server.Engines.Quests.Hag
 					{
 						obj.Complete();
 
-						if ( obj.BlackheartMet )
+						qs.AddConversation( new BlackheartPirateConversation(  !obj.BlackheartMet ) );
-							qs.AddConversation( new BlackheartPirateConversation( false ) );
-						else
-							qs.AddConversation( new BlackheartPirateConversation( true ) );
 					}
 					else if ( !obj.BlackheartMet )
 					{

Scripts/Engines/Quests/Witch Apprentice/Mobiles/Grizelda.cs

@@ -138,10 +138,10 @@ namespace Server.Engines.Quests.Hag
 									{
 										item = Loot.RandomArmorOrShieldOrJewelry();
 
-										if ( item is BaseArmor )
+										if ( item is BaseArmor armor )
-											BaseRunicTool.ApplyAttributesTo( (BaseArmor)item, 2, 20, 30 );
+											BaseRunicTool.ApplyAttributesTo( armor, 2, 20, 30 );
-										else if ( item is BaseJewel )
+										else if ( item is BaseJewel jewel )
-											BaseRunicTool.ApplyAttributesTo( (BaseJewel)item, 2, 20, 30 );
+											BaseRunicTool.ApplyAttributesTo( jewel, 2, 20, 30 );
 									}
 									else
 									{

Scripts/Engines/Quests/Witch Apprentice/Objectives.cs

@@ -75,9 +75,7 @@ namespace Server.Engines.Quests.Hag
 
 		private void DeleteImp( object imp )
 		{
-			Mobile m = imp as Mobile;
+			if ( imp is Mobile m && !m.Deleted )
-
-			if ( m != null && !m.Deleted )
 			{
 				Effects.SendLocationEffect( m.Location, m.Map, 0x3728, 10, 10 );
 				Effects.PlaySound( m.Location, m.Map, 0x1FE );
@@ -269,9 +267,7 @@ namespace Server.Engines.Quests.Hag
 
 		private void DeleteImp( object imp )
 		{
-			Mobile m = imp as Mobile;
+			if ( imp is Mobile m && !m.Deleted )
-
-			if ( m != null && !m.Deleted )
 			{
 				Effects.SendLocationEffect( m.Location, m.Map, 0x3728, 10, 10 );
 				Effects.PlaySound( m.Location, m.Map, 0x1FE );

Scripts/Engines/RemoteAdmin/Network.cs

@@ -159,8 +159,7 @@ namespace Server.RemoteAdmin
 			string user = pvSrc.ReadString( 30 );
 			string pw = pvSrc.ReadString( 30 );
 
-			Account a = Accounts.GetAccount( user ) as Account;
+			if ( !(Accounts.GetAccount( user ) is Account a) )
-			if ( a == null )
 			{
 				state.Send( new Login( LoginResponse.NoUser ) );
 				Console.WriteLine( "ADMIN: Invalid username '{0}' from {1}", user, state );

Scripts/Engines/Reports/Objects/Charts/BarGraph.cs

@@ -90,9 +90,7 @@ namespace Server.Engines.Reports
 		{
 			for ( int j = 0; j < ss.Children.Count; ++j )
 			{
-				Report report = ss.Children[j] as Report;
+				if ( !(ss.Children[j] is Report report) || report.Name != reportName )
-
-				if ( report == null || report.Name != reportName )
 					continue;
 
 				for ( int k = 0; k < report.Items.Count; ++k )

Scripts/Engines/Reports/Objects/Reports/Report.cs

@@ -64,10 +64,10 @@ namespace Server.Engines.Reports
 			{
 				PersistableObject child = ip.GetChild();
 
-				if ( child is ReportColumn )
+				if ( child is ReportColumn column )
-					m_Columns.Add( (ReportColumn) child );
+					m_Columns.Add( column );
-				else if ( child is ReportItem )
+				else if ( child is ReportItem item )
-					m_Items.Add( (ReportItem) child );
+					m_Items.Add( item );
 			}
 		}
 	}

Scripts/Engines/Reports/Objects/Staffing/PageInfo.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections;
 using Server;
+using Server.Accounting;
 using Server.Engines;
 using Server.Engines.Help;
 
@@ -192,15 +193,7 @@ namespace Server.Engines.Reports
 
 		public static string GetAccount( Mobile mob )
 		{
-			if ( mob == null )
+			return mob?.Account is Account acct ? acct.Username : null;
-				return null;
-
-			Accounting.Account acct = mob.Account as Accounting.Account;
-
-			if ( acct == null )
-				return null;
-
-			return acct.Username;
 		}
 
 		public PageInfo()

Scripts/Engines/Reports/Objects/Staffing/StaffHistory.cs

@@ -51,12 +51,10 @@ namespace Server.Engines.Reports
 		{
 			lock ( RenderLock )
 			{
-				if ( account == null || account.Length == 0 )
+				if ( string.IsNullOrEmpty(account) )
 					return null;
 
-				StaffInfo info = m_StaffInfo[account] as StaffInfo;
+				if ( !(m_StaffInfo[account] is StaffInfo info) )
-
-				if ( info == null )
 					m_StaffInfo[account] = info = new StaffInfo( account );
 
 				return info;
@@ -65,12 +63,10 @@ namespace Server.Engines.Reports
 
 		public UserInfo GetUserInfo( string account )
 		{
-			if ( account == null || account.Length == 0 )
+			if ( string.IsNullOrEmpty(account) )
 				return null;
 
-			UserInfo info = m_UserInfo[account] as UserInfo;
+			if ( !(m_UserInfo[account] is UserInfo info) )
-
-			if ( info == null )
 				m_UserInfo[account] = info = new UserInfo( account );
 
 			return info;
@@ -123,10 +119,8 @@ namespace Server.Engines.Reports
 			{
 				PersistableObject obj = ip.GetChild();
 
-				if ( obj is PageInfo )
+				if ( obj is PageInfo pageInfo )
 				{
-					PageInfo pageInfo = obj as PageInfo;
-
 					pageInfo.UpdateResolver();
 
 					if ( pageInfo.TimeSent >= min || pageInfo.TimeResolved >= min )
@@ -140,10 +134,8 @@ namespace Server.Engines.Reports
 						pageInfo.Resolver = null;
 					}
 				}
-				else if ( obj is QueueStatus )
+				else if ( obj is QueueStatus queueStatus )
 				{
-					QueueStatus queueStatus = obj as QueueStatus;
-
 					if ( queueStatus.TimeStamp >= min )
 						m_QueueStats.Add( queueStatus );
 				}

Scripts/Engines/Reports/Rendering/HtmlRenderer.cs

@@ -218,10 +218,10 @@ namespace Server.Engines.Reports
 
 		private string FindNameFrom( PersistableObject obj )
 		{
-			if ( obj is Report )
+			if ( obj is Report report )
-				return (obj as Report).Name;
+				return report.Name;
-			else if ( obj is Chart )
+			if ( obj is Chart chart )
-				return (obj as Chart).Name;
+				return chart.Name;
 
 			return "Invalid";
 		}
@@ -266,12 +266,12 @@ namespace Server.Engines.Reports
 
 		public void RenderDirect( PersistableObject obj, HtmlTextWriter html )
 		{
-			if ( obj is Report )
+			if ( obj is Report report )
-				RenderReport( obj as Report, html );
+				RenderReport( report, html );
-			else if ( obj is BarGraph )
+			else if ( obj is BarGraph graph )
-				RenderBarGraph( obj as BarGraph, html );
+				RenderBarGraph( graph, html );
-			else if ( obj is PieChart )
+			else if ( obj is PieChart chart )
-				RenderPieChart( obj as PieChart, html );
+				RenderPieChart( chart, html );
 		}
 
 		private void RenderPieChart( PieChart chart, HtmlTextWriter html )

Scripts/Engines/Reports/Reports.cs

@@ -485,16 +485,14 @@ namespace Server.Engines.Reports
 
 				string controller = "Unknown";
 
-				Mobile mob = sigil.RootParent as Mobile;
+				if ( sigil.RootParent is Mobile mob )
-
-				if ( mob != null )
 				{
 					Faction faction = Faction.Find( mob );
 
 					if ( faction != null )
 						controller = faction.Definition.FriendlyName;
 				}
-				else if ( sigil.LastMonolith != null && sigil.LastMonolith.Faction != null )
+				else if ( sigil.LastMonolith?.Faction != null )
 				{
 					controller = sigil.LastMonolith.Faction.Definition.FriendlyName;
 				}

Scripts/Engines/Spawner/ProximitySpawner.cs

@@ -94,13 +94,8 @@ namespace Server.Mobiles
 
 		public virtual bool ValidTrigger( Mobile m )
 		{
-			if ( m is BaseCreature )
+			if (m is BaseCreature bc && (bc.IsDeadBondedPet || !(bc.Controlled || bc.Summoned)))
-			{
+				return false;
-				BaseCreature bc = m as BaseCreature;
-
-				if ( bc.IsDeadBondedPet || !(bc.Controlled || bc.Summoned) )
-					return false;
-			}
 
 			return m.AccessLevel == AccessLevel.Player && ( m.Player || ( m.Alive && !m.Hidden && m.CanBeDamaged() ) );
 		}
@@ -120,8 +115,8 @@ namespace Server.Mobiles
 				if ( m_InstantFlag )
 				{
 					foreach ( ISpawnable spawned in Spawned.Keys )
-						if ( spawned is Mobile )
+						if ( spawned is Mobile mobile )
-							((Mobile)spawned).Combatant = m;
+							mobile.Combatant = m;
 				}
 			}
 		}

Scripts/Engines/Spawner/Spawner.cs

@@ -41,9 +41,8 @@ namespace Server.Mobiles
 
 		public override void OnAfterDuped( Item newItem )
 		{
-			if ( newItem is Spawner )
+			if ( newItem is Spawner newSpawner )
 			{
-				Spawner newSpawner = newItem as Spawner;
 				for ( int i = 0; i < m_Entries.Count; i++ )
 					newSpawner.AddEntry( m_Entries[i].SpawnedName, m_Entries[i].SpawnedProbability, m_Entries[i].SpawnedMaxCount, false );
 			}
@@ -479,8 +478,8 @@ namespace Server.Mobiles
 											{
 												flags = EntryFlags.InvalidProps;
 
-												if ( o is ISpawnable )
+												if ( o is ISpawnable spawnable )
-													((ISpawnable)o).Delete();
+													spawnable.Delete();
 
 												return false;
 											}
@@ -492,10 +491,8 @@ namespace Server.Mobiles
 						}
 					}
 
-					if ( o is Mobile )
+					if ( o is Mobile m )
 					{
-						Mobile m = (Mobile)o;
-
 						m_Spawned.Add( m, entry );
 						entry.Spawned.Add( m );
 
@@ -506,10 +503,8 @@ namespace Server.Mobiles
 
 						m.MoveToWorld( loc, map );
 
-						if ( m is BaseCreature )
+						if ( m is BaseCreature c )
 						{
-							BaseCreature c = (BaseCreature)m;
-
 							int walkrange = GetWalkingRange();
 
 							if ( walkrange >= 0 )
@@ -529,10 +524,8 @@ namespace Server.Mobiles
 						m.Spawner = this;
 						m.OnAfterSpawn();
 					}
-					else if ( o is Item )
+					else if ( o is Item item )
 					{
-						Item item = (Item)o;
-
 						m_Spawned.Add( item, entry );
 						entry.Spawned.Add( item );
 
@@ -583,10 +576,8 @@ namespace Server.Mobiles
 
 			bool waterMob, waterOnlyMob;
 
-			if ( spawned is Mobile )
+			if ( spawned is Mobile mob )
 			{
-				Mobile mob = (Mobile)spawned;
-
 				waterMob = mob.CanSwim;
 				waterOnlyMob = ( mob.CanSwim && mob.CantWalk );
 			}
@@ -958,12 +949,10 @@ namespace Server.Mobiles
 
 						for ( int i = 0; i < count; ++i )
 						{
-							ISpawnable e = reader.ReadEntity() as ISpawnable;
+							if ( reader.ReadEntity() is ISpawnable e )
-
-							if ( e != null )
 							{
-								if ( e is BaseCreature )
+								if ( e is BaseCreature creature )
-									((BaseCreature)e).RemoveIfUntamed = true;
+									creature.RemoveIfUntamed = true;
 
 								e.Spawner = this;
 
@@ -1145,10 +1134,10 @@ namespace Server.Mobiles
 			{
 				object o = m_Spawned[i];
 
-				if ( o is Item )
+				if ( o is Item item )
-					writer.Write( (Item)o );
+					writer.Write( item );
-				else if ( o is Mobile )
+				else if ( o is Mobile mobile )
-					writer.Write( (Mobile)o );
+					writer.Write( mobile );
 				else
 					writer.Write( Serial.MinusOne );
 			}
@@ -1172,14 +1161,13 @@ namespace Server.Mobiles
 			for ( int i = 0; i < count; ++i )
 			{
 				//IEntity e = World.FindEntity( reader.ReadInt() );
-				ISpawnable e = reader.ReadEntity() as ISpawnable;
 
-				if ( e != null )
+				if ( reader.ReadEntity() is ISpawnable e )
 				{
 					e.Spawner = parent;
 
-					if ( e is BaseCreature )
+					if ( e is BaseCreature creature )
-						((BaseCreature)e).RemoveIfUntamed = true;
+						creature.RemoveIfUntamed = true;
 
 					m_Spawned.Add( e );
 
@@ -1196,23 +1184,17 @@ namespace Server.Mobiles
 				ISpawnable e = m_Spawned[i];
 				bool remove = false;
 
-				if ( e is Item )
+				if ( e is Item item )
 				{
-					Item item = (Item)e;
-
 					if ( item.Deleted || item.RootParent is Mobile || item.IsLockedDown || item.IsSecure || item.Spawner == null )
 						remove = true;
 				}
-				else if ( e is Mobile )
+				else if ( e is Mobile m )
 				{
-					Mobile m = (Mobile)e;
-
 					if ( m.Deleted )
 						remove = true;
-					else if ( m is BaseCreature )
+					else if ( m is BaseCreature c )
 					{
-						BaseCreature c = (BaseCreature)m;
-
 						if ( c.Controlled || c.IsStabled )
 							remove = true;
 /*

Scripts/Engines/Treasures of Tokuno/BasePigmentsOfTokuno.cs

@@ -124,9 +124,7 @@ namespace Server.Items
 			if ( pigment.Deleted || pigment.UsesRemaining <= 0 || !from.InRange( pigment.GetWorldLocation(), 3 ) || !pigment.IsAccessibleTo( from ))
 				return;
 
-			Item i = targeted as Item;
+			if ( !(targeted is Item i) )
-
-			if ( i == null )
 				from.SendLocalizedMessage( 1070931 ); // You can only dye artifacts and enhanced magic items with this tub.
 			else if ( !from.InRange( i.GetWorldLocation(), 3 ) || !IsAccessibleTo( from ) )
 				from.SendLocalizedMessage( 502436 ); // That is not accessible.
@@ -165,12 +163,12 @@ namespace Server.Items
 
 			CraftResource resource = CraftResource.None;
 
-			if ( i is BaseWeapon )
+			if ( i is BaseWeapon weapon )
-				resource = ((BaseWeapon)i).Resource;
+				resource = weapon.Resource;
-			else if ( i is BaseArmor )
+			else if ( i is BaseArmor armor )
-				resource = ((BaseArmor)i).Resource;
+				resource = armor.Resource;
-			else if (i is BaseClothing)
+			else if (i is BaseClothing clothing)
-				resource = ((BaseClothing)i).Resource;
+				resource = clothing.Resource;
 
 			if ( !CraftResources.IsStandard( resource ) )
 				return true;

Scripts/Engines/Treasures of Tokuno/LesserArtifacts.cs

@@ -815,10 +815,8 @@ namespace Server.Items
 				int min = 20;
 				int max = 80;
 
-				if ( item is BaseWeapon )
+				if ( item is BaseWeapon weapon )
 				{
-					BaseWeapon weapon = (BaseWeapon)item;
-
 					if ( Core.AOS )
 						BaseRunicTool.ApplyAttributesTo( weapon, attributeCount, min, max );
 					else
@@ -828,10 +826,8 @@ namespace Server.Items
 						weapon.DurabilityLevel = (WeaponDurabilityLevel)Utility.Random( 6 );
 					}
 				}
-				else if ( item is BaseArmor )
+				else if ( item is BaseArmor armor )
 				{
-					BaseArmor armor = (BaseArmor)item;
-
 					if ( Core.AOS )
 						BaseRunicTool.ApplyAttributesTo( armor, attributeCount, min, max );
 					else
@@ -840,10 +836,13 @@ namespace Server.Items
 						armor.Durability = (ArmorDurabilityLevel)Utility.Random( 6 );
 					}
 				}
-				else if ( item is BaseHat && Core.AOS )
+				else if (Core.AOS)
-					BaseRunicTool.ApplyAttributesTo( (BaseHat)item, attributeCount, min, max );
+				{
-				else if ( item is BaseJewel && Core.AOS )
+					if ( item is BaseHat hat )
-					BaseRunicTool.ApplyAttributesTo( (BaseJewel)item, attributeCount, min, max );
+						BaseRunicTool.ApplyAttributesTo( hat, attributeCount, min, max );
+					else if ( item is BaseJewel jewel )
+						BaseRunicTool.ApplyAttributesTo( jewel, attributeCount, min, max );
+				}
 
 				DropItem( item );
 			}

Scripts/Engines/Treasures of Tokuno/TreasuresOfTokuno.cs

@@ -124,10 +124,7 @@ namespace Server.Misc
 
 		public static void HandleKill( Mobile victim, Mobile killer )
 		{
-			PlayerMobile pm = killer as PlayerMobile;
+			if ( DropEra == TreasuresOfTokunoEra.None || !(killer is PlayerMobile pm) || !(victim is BaseCreature bc) || !CheckLocation( bc ) || !CheckLocation( pm )|| !killer.InRange( victim, 18 ))
-			BaseCreature bc = victim as BaseCreature;
-
-			if ( DropEra == TreasuresOfTokunoEra.None || pm == null || bc == null || !CheckLocation( bc ) || !CheckLocation( pm )|| !killer.InRange( victim, 18 ))
 				return;
 
 			if ( bc.Controlled || bc.Owners.Count > 0 || bc.Fame <= 0 )
@@ -246,13 +243,11 @@ namespace Server.Mobiles
 
 		public override void OnMovement( Mobile m, Point3D oldLocation )
 		{
-			if ( m.Alive && m is PlayerMobile )
+			if ( m.Alive && m is PlayerMobile pm )
 			{
-				PlayerMobile pm = (PlayerMobile)m;
-
 				int range = 3;
 
-				if ( m.Alive && Math.Abs( Z - m.Z ) < 16 && InRange( m, range ) && !InRange( oldLocation, range ) )
+				if ( pm.Alive && Math.Abs( Z - pm.Z ) < 16 && InRange( m, range ) && !InRange( oldLocation, range ) )
 				{
 					if ( pm.ToTItemsTurnedIn >= TreasuresOfTokuno.ItemsPerReward )
 					{
@@ -323,13 +318,13 @@ namespace Server.Gumps
 			for( int i = 0; i < items.Count; i++ )
 			{
 				Item item = (Item)items[i];
-				if ( item is ChestOfHeirlooms && !((ChestOfHeirlooms)item).Locked )
+				if ( item is ChestOfHeirlooms heirlooms && !heirlooms.Locked )
 					continue;
 
-				if ( item is ChestOfHeirlooms && ((ChestOfHeirlooms)item).TrapLevel != 10 )
+				if ( item is ChestOfHeirlooms ofHeirlooms && ofHeirlooms.TrapLevel != 10 )
 					continue;
 
-				if ( item is PigmentsOfTokuno && ((PigmentsOfTokuno)item).Type != PigmentType.None )
+				if ( item is PigmentsOfTokuno tokuno && tokuno.Type != PigmentType.None )
 					continue;
 
 				buttons.Add( new ItemTileButtonInfo( item ) );
@@ -385,9 +380,7 @@ namespace Server.Gumps
 
 		public override void HandleCancel( NetState sender )
 		{
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !pm.InRange( m_Collector.Location, 7 ) )
-
-			if ( pm == null || !pm.InRange( m_Collector.Location, 7 ) )
 				return;
 
 			if ( pm.ToTItemsTurnedIn == 0 )
@@ -555,9 +548,7 @@ namespace Server.Gumps
 
 		public override void HandleButtonResponse( NetState sender, int adjustedButton, ImageTileButtonInfo buttonInfo )
 		{
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !pm.InRange( m_Collector.Location, 7 ) || !(pm.ToTItemsTurnedIn >= TreasuresOfTokuno.ItemsPerReward) )
-
-			if ( pm == null || !pm.InRange( m_Collector.Location, 7 ) || !(pm.ToTItemsTurnedIn >= TreasuresOfTokuno.ItemsPerReward) )
 				return;
 
 			bool pigments = (buttonInfo is PigmentsTileButtonInfo);
@@ -566,7 +557,7 @@ namespace Server.Gumps
 
 			if ( pigments )
 			{
-				PigmentsTileButtonInfo p = buttonInfo as PigmentsTileButtonInfo;
+				PigmentsTileButtonInfo p = (PigmentsTileButtonInfo) buttonInfo;
 
 				item = new PigmentsOfTokuno( p.Pigment );
 			}
@@ -610,9 +601,7 @@ namespace Server.Gumps
 
 		public override void HandleCancel( NetState sender )
 		{
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !pm.InRange( m_Collector.Location, 7 ) )
-
-			if ( pm == null || !pm.InRange( m_Collector.Location, 7 ) )
 				return;
 
 			if ( pm.ToTItemsTurnedIn == 0 )

Scripts/Engines/VeteranRewards/Character Statue Maker/CharacterStatue.cs

@@ -498,9 +498,7 @@ namespace Server.Mobiles
 
 		public override void OnDoubleClick( Mobile from )
 		{
-			Account acct = from.Account as Account;
+			if ( from.Account is Account acct && from.AccessLevel == AccessLevel.Player )
-
-			if ( acct != null && from.AccessLevel == AccessLevel.Player )
 			{
 				TimeSpan time = TimeSpan.FromDays( RewardSystem.RewardInterval.TotalDays * 6 ) - ( DateTime.UtcNow - acct.Created );
 
@@ -585,12 +583,12 @@ namespace Server.Mobiles
 				BaseHouse house = null;
 				Point3D loc = new Point3D( p );
 
-				if ( targeted is Item && !((Item) targeted).IsLockedDown && !((Item) targeted).IsSecure && !(targeted is AddonComponent) )
+				if ( targeted is Item item && !item.IsLockedDown && !item.IsSecure && !(item is AddonComponent) )
 				{
 					from.SendLocalizedMessage( 1076191 ); // Statues can only be placed in houses.
 					return;
 				}
-				else if ( from.IsBodyMod )
+				if ( from.IsBodyMod )
 				{
 					from.SendLocalizedMessage( 1073648 ); // You may only proceed while in your original state...
 					return;
@@ -605,8 +603,8 @@ namespace Server.Mobiles
 
 					house.Addons.Add( plinth );
 
-					if ( m_Maker is IRewardItem )
+					if ( m_Maker is IRewardItem rewardItem )
-						statue.IsRewardItem = ( (IRewardItem) m_Maker).IsRewardItem;
+						statue.IsRewardItem = rewardItem.IsRewardItem;
 
 					statue.Plinth = plinth;
 					plinth.MoveToWorld( loc, map );
@@ -638,10 +636,10 @@ namespace Server.Mobiles
 		{
 			if ( !map.CanFit( p.X, p.Y, p.Z, 20, true, true, true ) )
 				return AddonFitResult.Blocked;
-			else if ( !BaseAddon.CheckHouse( from, p, map, 20, ref house ) )
+			if ( !BaseAddon.CheckHouse( from, p, map, 20, ref house ) )
 				return AddonFitResult.NotInHouse;
-			else
+
-				return CheckDoors( p, 20, house );
+			return CheckDoors( p, 20, house );
 		}
 
 		public static AddonFitResult CheckDoors( Point3D p, int height, BaseHouse house )

Scripts/Engines/VeteranRewards/Character Statue Maker/Gumps/CharacterStatueGump.cs

@@ -133,9 +133,9 @@ namespace Server.Gumps
 
 			if ( info.ButtonID == (int) Buttons.Sculpt )
 			{
-				if ( m_Maker is CharacterStatueDeed )
+				if ( m_Maker is CharacterStatueDeed deed )
 				{
-					CharacterStatue backup = ( (CharacterStatueDeed) m_Maker ).Statue;
+					CharacterStatue backup = deed.Statue;
 
 					if ( backup != null )
 						backup.Delete();
@@ -180,9 +180,9 @@ namespace Server.Gumps
 			}
 			else if ( info.ButtonID == (int) Buttons.Restore )
 			{
-				if ( m_Maker is CharacterStatueDeed )
+				if ( m_Maker is CharacterStatueDeed deed )
 				{
-					CharacterStatue backup = ( (CharacterStatueDeed) m_Maker ).Statue;
+					CharacterStatue backup = deed.Statue;
 
 					if ( backup != null )
 						m_Statue.Restore( backup );

Scripts/Engines/VeteranRewards/RewardConfirmGump.cs

@@ -1,6 +1,7 @@
 using System;
 using Server;
 using Server.Gumps;
+using Server.Items;
 using Server.Network;
 
 namespace Server.Engines.VeteranRewards
@@ -51,8 +52,8 @@ namespace Server.Engines.VeteranRewards
 
 				if ( item != null )
 				{
-					if ( item is Server.Items.RedSoulstone )
+					if ( item is RedSoulstone soulstone )
-						((Server.Items.RedSoulstone) item).Account = m_From.Account.Username;	
+						soulstone.Account = m_From.Account.Username;
 
 					if ( RewardSystem.ConsumeRewardPoint( m_From ) )
 						m_From.AddToBackpack( item );

Scripts/Engines/VeteranRewards/RewardDemolitionGump.cs

@@ -39,9 +39,7 @@ namespace Server.Gumps
 
 		public override void OnResponse( NetState sender, RelayInfo info )
 		{
-			Item item = m_Addon as Item;
+			if ( !(m_Addon is Item item) || item.Deleted )
-			
-			if ( item == null || item.Deleted )
 				return;
 
 			if ( info.ButtonID == (int) Buttons.Confirm )
@@ -49,7 +47,7 @@ namespace Server.Gumps
 				Mobile m = sender.Mobile;
 				BaseHouse house = BaseHouse.FindHouseAt( m );
 
-				if ( house != null && house.IsOwner( m ) )
+				if ( house?.IsOwner( m ) == true )
 				{
 					if ( m.InRange( item.Location, 2 ) )
 					{

Scripts/Engines/VeteranRewards/RewardEntry.cs

@@ -26,8 +26,8 @@ namespace Server.Engines.VeteranRewards
 			{
 				Item item = Activator.CreateInstance( m_ItemType, m_Args ) as Item;
 
-				if ( item is IRewardItem )
+				if ( item is IRewardItem rewardItem )
-					((IRewardItem)item).IsRewardItem = true;
+					rewardItem.IsRewardItem = true;
 
 				return item;
 			}

Scripts/Engines/VeteranRewards/RewardSystem.cs

@@ -73,9 +73,7 @@ namespace Server.Engines.VeteranRewards
 				return false;
 			}
 
-			Account acct = mob.Account as Account;
+			if ( !(mob.Account is Account acct) )
-
-			if ( acct == null )
 			{
 				ts = TimeSpan.Zero;
 				return false;
@@ -93,9 +91,7 @@ namespace Server.Engines.VeteranRewards
 
 		public static int GetRewardLevel( Mobile mob )
 		{
-			Account acct = mob.Account as Account;
+			if ( !(mob.Account is Account acct) )
-
-			if ( acct == null )
 				return 0;
 
 			return GetRewardLevel( acct );
@@ -115,9 +111,7 @@ namespace Server.Engines.VeteranRewards
 
 		public static bool HasHalfLevel( Mobile mob )
 		{
-			Account acct = mob.Account as Account;
+			if ( !(mob.Account is Account acct) )
-
-			if ( acct == null )
 				return false;
 
 			return HasHalfLevel( acct );
@@ -134,16 +128,12 @@ namespace Server.Engines.VeteranRewards
 
 		public static bool ConsumeRewardPoint( Mobile mob )
 		{
-			int cur, max;
+			ComputeRewardInfo( mob, out var cur, out var max );
-
-			ComputeRewardInfo( mob, out cur, out max );
 
 			if ( cur >= max )
 				return false;
 
-			Account acct = mob.Account as Account;
+			if ( !(mob.Account is Account acct) )
-
-			if ( acct == null )
 				return false;
 
 			//if ( mob.AccessLevel < AccessLevel.GameMaster )
@@ -154,16 +144,12 @@ namespace Server.Engines.VeteranRewards
 
 		public static void ComputeRewardInfo( Mobile mob, out int cur, out int max )
 		{
-			int level;
+			ComputeRewardInfo( mob, out cur, out max, out _ );
-
-			ComputeRewardInfo( mob, out cur, out max, out level );
 		}
 
 		public static void ComputeRewardInfo( Mobile mob, out int cur, out int max, out int level )
 		{
-			Account acct = mob.Account as Account;
+			if ( !(mob.Account is Account acct) )
-
-			if ( acct == null )
 			{
 				cur = max = level = 0;
 				return;
@@ -506,10 +492,10 @@ namespace Server.Engines.VeteranRewards
 					e.Mobile.SkillsCap = 7000;
 			}
 
-			if ( Core.ML && e.Mobile is PlayerMobile && !((PlayerMobile)e.Mobile).HasStatReward && HasHalfLevel( e.Mobile ) )
+			if ( Core.ML && e.Mobile is PlayerMobile mobile && !mobile.HasStatReward && HasHalfLevel( mobile ) )
 			{
-				((PlayerMobile)e.Mobile).HasStatReward = true;
+				mobile.HasStatReward = true;
-				e.Mobile.StatCap += 5;
+				mobile.StatCap += 5;
 			}
 
 			if ( cur < max )

Scripts/Engines/Virtues/Compassion.cs

@@ -25,9 +25,7 @@ namespace Server
 
 		public static void CheckAtrophy( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return;
 
 			try

Scripts/Engines/Virtues/Honor.cs

@@ -35,16 +35,15 @@ namespace Server
 
 			protected override void OnTarget( Mobile from, object targeted )
 			{
-				PlayerMobile pm = from as PlayerMobile;
+				if ( !(from is PlayerMobile pm) )
-				if ( pm == null )
 					return;
 
 				if ( targeted == pm )
 				{
 					EmbraceHonor( pm );
 				}
-				else if ( targeted is Mobile )
+				else if ( targeted is Mobile mobile )
-					Honor( pm, (Mobile) targeted );
+					Honor( pm, mobile );
 			}
 
 			protected override void OnTargetOutOfRange( Mobile from, object targeted )
@@ -145,8 +144,7 @@ namespace Server
 				return;
 			}
 
-			BaseCreature cret = target as BaseCreature;
+			if ( target.Body.IsHuman && (!(target is BaseCreature cret) || (!cret.AlwaysAttackable && !cret.AlwaysMurderer)) )
-			if ( target.Body.IsHuman && (cret == null || (!cret.AlwaysAttackable && !cret.AlwaysMurderer)) )
 			{
 
 				if ( reg == null || reg.IsDisabled() )
@@ -170,8 +168,7 @@ namespace Server
 				return;
 			}
 
-			if ( source.SentHonorContext != null )
+			source.SentHonorContext?.Cancel();
-				source.SentHonorContext.Cancel();
 
 			new HonorContext( source, target );
 
@@ -283,7 +280,7 @@ namespace Server
 					m_HonorDamage += amount * 0.8;
 				}
 			}
-			else if ( from is BaseCreature && ((BaseCreature)from).GetMaster() == m_Source )
+			else if ( from is BaseCreature creature && creature.GetMaster() == m_Source )
 			{
 				m_HonorDamage += amount * 0.8;
 			}

Scripts/Engines/Virtues/Justice.cs

@@ -47,9 +47,7 @@ namespace Server
 			if ( !from.CheckAlive() )
 				return;
 
-			PlayerMobile protector = from as PlayerMobile;
+			if ( !(from is PlayerMobile protector) )
-
-			if ( protector == null )
 				return;
 
 			if ( !VirtueHelper.IsSeeker( protector, VirtueName.Justice ) )
@@ -159,17 +157,13 @@ namespace Server
 
 		public static void RejectDelay_Callback( object state )
 		{
-			Mobile m = state as Mobile;
+			if ( state is Mobile m )
-
-			if ( m != null )
 				m.EndAction( typeof( JusticeVirtue ) );
 		}
 
 		public static void CheckAtrophy( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return;
 
 			try

Scripts/Engines/Virtues/Sacrifice.cs

@@ -33,9 +33,7 @@ namespace Server
 
 		public static void CheckAtrophy( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return;
 
 			try
@@ -61,9 +59,7 @@ namespace Server
 			if ( from.Alive )
 				return;
 
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return;
 
 			if ( from.Criminal )
@@ -94,14 +90,10 @@ namespace Server
 			if ( !from.CheckAlive() )
 				return;
 
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return;
 
-			Mobile targ = targeted as Mobile;
+			if ( !(targeted is Mobile targ) )
-
-			if ( targ == null )
 				return;
 
 			if ( !ValidateCreature( targ ) )
@@ -173,7 +165,7 @@ namespace Server
 
 		public static bool ValidateCreature( Mobile m )
 		{
-			if ( m is BaseCreature && (((BaseCreature)m).Controlled || ((BaseCreature)m).Summoned) )
+			if ( m is BaseCreature creature && (creature.Controlled || creature.Summoned) )
 				return false;
 
 			return ( m is Lich || m is Succubus || m is Daemon || m is EvilMage || m is EnslavedGargoyle || m is GargoyleEnforcer );

Scripts/Engines/Virtues/Valor.cs

@@ -30,9 +30,7 @@ namespace Server
 
 		public static void CheckAtrophy( Mobile from )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if ( !(from is PlayerMobile pm) )
-
-			if ( pm == null )
 				return;
 
 			try
@@ -52,9 +50,7 @@ namespace Server
 
 		public static void Valor( Mobile from, object targ )
 		{
-			IdolOfTheChampion idol = targ as IdolOfTheChampion;
+			if ( !(targ is IdolOfTheChampion idol) || idol.Deleted || idol.Spawn == null || idol.Spawn.Deleted )
-
-			if ( idol == null || idol.Deleted || idol.Spawn == null || idol.Spawn.Deleted )
 				from.SendLocalizedMessage( 1054035 ); // You must target a Champion Idol to challenge the Champion's spawn!
 			else if ( from.Hidden )
 				from.SendLocalizedMessage( 1052015 ); // You cannot do that while hidden.

Scripts/Gumps/AddGump.cs

@@ -180,14 +180,12 @@ namespace Server.Gumps
 
 			protected override void OnTarget( Mobile from, object o )
 			{
-				IPoint3D p = o as IPoint3D;
+				if ( o is IPoint3D p )
-
-				if ( p != null )
 				{
-					if ( p is Item )
+					if ( p is Item item )
-						p = ((Item)p).GetWorldTop();
+						p = item.GetWorldTop();
-					else if ( p is Mobile )
+					else if ( p is Mobile m )
-						p = ((Mobile)p).Location;
+						p = m.Location;
 
 					Server.Commands.Add.Invoke( from, new Point3D( p ), new Point3D( p ), new string[]{ m_Type.Name } );
 

Scripts/Gumps/AdminGump.cs

@@ -543,9 +543,7 @@ namespace Server.Gumps
 
 					for ( int i = 0, index = (listPage * 12); i < 12 && index >= 0 && index < m_List.Count; ++i, ++index )
 					{
-						NetState ns = m_List[index] as NetState;
+						if ( !(m_List[index] is NetState ns) )
-
-						if ( ns == null )
 							continue;
 
 						Mobile m = ns.Mobile;
@@ -575,9 +573,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.ClientInfo:
 				{
-					Mobile m = state as Mobile;
+					if ( !(state is Mobile m) )
-
-					if ( m == null )
 						break;
 
 					AddClientHeader();
@@ -764,17 +760,12 @@ namespace Server.Gumps
 
 					for ( int i = 0, index = (listPage * 12); i < 12 && index >= 0 && index < m_List.Count; ++i, ++index )
 					{
-						Account a = m_List[index] as Account;
+						if ( !(m_List[index] is Account a) )
-
-						if ( a == null )
 							continue;
 
 						int offset = 140 + (i * 20);
 
-						AccessLevel accessLevel;
+						GetAccountInfo( a, out var accessLevel, out var online );
-						bool online;
-
-						GetAccountInfo( a, out accessLevel, out online );
 
 						if ( rads == null )
 						{
@@ -811,9 +802,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_ChangePassword:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					AddHtml( 10, 125, 400, 20, Color( Center( "Change Password" ), LabelColor32 ), false, false );
@@ -833,9 +822,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_ChangeAccess:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					AddHtml( 10, 125, 400, 20, Color( Center( "Change Access Level" ), LabelColor32 ), false, false );
@@ -868,9 +855,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Information:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					int charCount = 0;
@@ -892,10 +877,7 @@ namespace Server.Gumps
 					AddLabel(  20, 190, LabelHue, "Status:" );
 					AddLabel( 200, 190, a.Banned ? RedHue : GreenHue, a.Banned ? "Banned" : "Active" );
 
-					DateTime banTime;
+					if ( a.Banned && a.GetBanTags( out var banTime, out var banDuration ) )
-					TimeSpan banDuration;
-
-					if ( a.Banned && a.GetBanTags( out banTime, out banDuration ) )
 					{
 						if ( banDuration == TimeSpan.MaxValue )
 						{
@@ -956,9 +938,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Access:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					AddHtml( 10, 125, 400, 20, Color( Center( "Access" ), LabelColor32 ), false, false );
@@ -970,9 +950,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Access_ClientIPs:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					if ( m_List == null )
@@ -1017,9 +995,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Access_Restrictions:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					if ( m_List == null )
@@ -1061,9 +1037,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Characters:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					AddHtml( 10, 125, 400, 20, Color( Center( "Characters" ), LabelColor32 ), false, false );
@@ -1103,9 +1077,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Comments:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					AddHtml( 10, 125, 400, 20, Color( Center( "Comments" ), LabelColor32 ), false, false );
@@ -1133,9 +1105,7 @@ namespace Server.Gumps
 				}
 				case AdminGumpPage.AccountDetails_Tags:
 				{
-					Account a = state as Account;
+					if ( !(state is Account a) )
-
-					if ( a == null )
 						break;
 
 					AddHtml( 10, 125, 400, 20, Color( Center( "Tags" ), LabelColor32 ), false, false );
@@ -1215,8 +1185,11 @@ namespace Server.Gumps
 					{
 						m_List = new ArrayList();
 
-						foreach ( Account acct in Accounts.GetAccounts() )
+						foreach ( IAccount ia in Accounts.GetAccounts() )
 						{
+							if (!(ia is Account acct))
+								continue;
+
 							IPAddress[] loginList = acct.LoginIPs;
 
 							bool contains = false;
@@ -1256,10 +1229,7 @@ namespace Server.Gumps
 
 						int offset = 200 + (i * 20);
 
-						AccessLevel accessLevel;
+						GetAccountInfo( a, out var accessLevel, out var online );
-						bool online;
-
-						GetAccountInfo( a, out accessLevel, out online );
 
 						AddLabelCropped(  12, offset, 120, 20, LabelHue, a.Username );
 						AddLabelCropped( 132, offset, 120, 20, LabelHue, FormatAccessLevel( accessLevel ) );
@@ -1671,9 +1641,8 @@ namespace Server.Gumps
 			if ( m_PageType == AdminGumpPage.Accounts )
 			{
 				ArrayList list = m_List;
-				ArrayList rads = m_State as ArrayList;
 
-				if ( list != null && rads != null )
+				if ( list != null && m_State is ArrayList rads )
 				{
 					for ( int i = 0, v = m_ListPage*12; i < 12 && v < list.Count; ++i, ++v )
 					{
@@ -1780,10 +1749,9 @@ namespace Server.Gumps
 						case 210:
 						case 211:
 						{
-							TextRelay relay = info.GetTextEntry( 0 );
+							string text = info.GetTextEntry( 0 )?.Text.Trim();
-							string text = ( relay == null ? null : relay.Text.Trim() );
 
-							if ( text == null || text.Length == 0 )
+							if ( string.IsNullOrEmpty(text) )
 							{
 								notice = "You must enter text to broadcast it.";
 							}
@@ -1956,11 +1924,10 @@ namespace Server.Gumps
 
 							ArrayList results = new ArrayList();
 
-							TextRelay matchEntry = info.GetTextEntry( 0 );
+							string match = info.GetTextEntry( 0 )?.Text.Trim().ToLower();
-							string match = ( matchEntry == null ? null : matchEntry.Text.Trim().ToLower() );
 							string notice = null;
 
-							if ( match == null || match.Length == 0 )
+							if ( string.IsNullOrEmpty(match) )
 							{
 								notice = String.Format( "You must enter {0} to search.", forName ? "a name" : "an ip address" );
 							}
@@ -2022,9 +1989,7 @@ namespace Server.Gumps
 
 							if ( m_List != null && index >= 0 && index < m_List.Count )
 							{
-								NetState ns = m_List[index] as NetState;
+								if ( !(m_List[index] is NetState ns) )
-
-								if ( ns == null )
 									break;
 
 								Mobile m = ns.Mobile;
@@ -2057,20 +2022,17 @@ namespace Server.Gumps
 						case 5: from.Prompt = new AddTagNamePrompt( m_State as Account ); from.SendMessage( "Enter the new tag name." ); break;
 						case 6:
 						{
-							TextRelay unEntry = info.GetTextEntry( 0 );
+							string un = info.GetTextEntry( 0 )?.Text.Trim();
-							TextRelay pwEntry = info.GetTextEntry( 1 );
+							string pw = info.GetTextEntry( 1 )?.Text.Trim();
-
-							string un = ( unEntry == null ? null : unEntry.Text.Trim() );
-							string pw = ( pwEntry == null ? null : pwEntry.Text.Trim() );
 
 							Account dispAccount = null;
 							string notice;
 
-							if ( un == null || un.Length == 0 )
+							if ( string.IsNullOrEmpty(un) )
 							{
 								notice = "You must enter a username to add an account.";
 							}
-							else if ( pw == null || pw.Length == 0 )
+							else if ( string.IsNullOrEmpty(pw) )
 							{
 								notice = "You must enter a password to add an account.";
 							}
@@ -2098,10 +2060,10 @@ namespace Server.Gumps
 							ArrayList results;
 
 							TextRelay matchEntry = info.GetTextEntry( 0 );
-							string match = ( matchEntry == null ? null : matchEntry.Text.Trim().ToLower() );
+							string match = matchEntry?.Text.Trim().ToLower();
 							string notice = null;
 
-							if ( match == null || match.Length == 0 )
+							if ( string.IsNullOrEmpty(match) )
 							{
 								results = new ArrayList( (ICollection)Accounts.GetAccounts() );
 								results.Sort( AccountComparer.Instance );
@@ -2110,10 +2072,10 @@ namespace Server.Gumps
 							else
 							{
 								results = new ArrayList();
-								foreach ( Account check in Accounts.GetAccounts() )
+								foreach ( IAccount acct in Accounts.GetAccounts() )
 								{
-									if ( check.Username.ToLower().IndexOf( match ) >= 0 )
+									if ( acct.Username.ToLower().IndexOf( match ) >= 0 )
-										results.Add( check );
+										results.Add( acct );
 								}
 
 								results.Sort( AccountComparer.Instance );
@@ -2130,9 +2092,7 @@ namespace Server.Gumps
 						case 9: from.SendGump( new AdminGump( from, AdminGumpPage.AccountDetails_ChangeAccess, 0, null, null, m_State ) ); break;
 						case 10: case 11:
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							a.SetUnspecifiedBan( from );
@@ -2147,21 +2107,19 @@ namespace Server.Gumps
 						}
 						case 12:
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							TextRelay passwordEntry = info.GetTextEntry( 0 );
 							TextRelay confirmEntry = info.GetTextEntry( 1 );
 
-							string password = ( passwordEntry == null ? null : passwordEntry.Text.Trim() );
+							string password = passwordEntry?.Text.Trim();
-							string confirm = ( confirmEntry == null ? null : confirmEntry.Text.Trim() );
+							string confirm = confirmEntry?.Text.Trim();
 
 							string notice;
 							AdminGumpPage page = AdminGumpPage.AccountDetails_ChangePassword;
 
-							if ( password == null || password.Length == 0 )
+							if ( string.IsNullOrEmpty(password) )
 							{
 								notice = "You must enter the password.";
 							}
@@ -2183,9 +2141,7 @@ namespace Server.Gumps
 						}
 						case 16: // view shared
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							ArrayList list = GetSharedAccounts( a.LoginIPs );
@@ -2207,9 +2163,7 @@ namespace Server.Gumps
 						}
 						case 17: // ban shared
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							ArrayList list = GetSharedAccounts( a.LoginIPs );
@@ -2238,9 +2192,7 @@ namespace Server.Gumps
 						}
 						case 18: // firewall all
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							if ( a.LoginIPs.Length > 0 )
@@ -2256,17 +2208,15 @@ namespace Server.Gumps
 						}
 						case 19: // add
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							TextRelay entry = info.GetTextEntry( 0 );
-							string ip = ( entry == null ? null : entry.Text.Trim() );
+							string ip = entry?.Text.Trim();
 
 							string notice;
 
-							if ( ip == null || ip.Length == 0 )
+							if ( string.IsNullOrEmpty(ip) )
 							{
 								notice = "You must enter an address to add.";
 							}
@@ -2307,9 +2257,7 @@ namespace Server.Gumps
 						case 23:
 						case 24:
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							AccessLevel newLevel;
@@ -2338,9 +2286,7 @@ namespace Server.Gumps
 						}
 						case 25:
 						{
-							Account a = m_State as Account;
+							if ( !(m_State is Account a) )
-
-							if ( a == null )
 								break;
 
 							from.SendGump( new WarningGump( 1060635, 30720, String.Format( "<center>Account of {0}</center><br>You are about to <em><basefont color=red>permanently delete</basefont></em> the account. Likewise, all characters on the account will be deleted, including equipped, inventory, and banked items. Any houses tied to the account will be demolished.<br><br>Do you wish to continue?", a.Username ), 0xFFC000, 420, 280, new WarningGumpCallback( AccountDelete_Callback ), m_State ) );
@@ -2354,9 +2300,8 @@ namespace Server.Gumps
 						case 27: // Ban marked
 						{
 							ArrayList list = m_List;
-							ArrayList rads = m_State as ArrayList;
 
-							if ( list == null || rads == null )
+							if ( list == null || !(m_State is ArrayList rads) )
 								break;
 
 							if ( rads.Count > 0 )
@@ -2369,9 +2314,8 @@ namespace Server.Gumps
 						case 28: // Delete marked
 						{
 							ArrayList list = m_List;
-							ArrayList rads = m_State as ArrayList;
 
-							if ( list == null || rads == null )
+							if ( list == null || !(m_State is ArrayList rads) )
 								break;
 
 							if ( rads.Count > 0 )
@@ -2384,9 +2328,8 @@ namespace Server.Gumps
 						case 29: // Mark all
 						{
 							ArrayList list = m_List;
-							ArrayList rads = m_State as ArrayList;
 
-							if ( list == null || rads == null )
+							if ( list == null || !(m_State is ArrayList rads) )
 								break;
 
 							from.SendGump( new AdminGump( from, AdminGumpPage.Accounts, m_ListPage, m_List, null, new ArrayList( list ) ) );
@@ -2397,7 +2340,7 @@ namespace Server.Gumps
 						{
 							ArrayList results = new ArrayList();
 
-							foreach ( Account acct in Accounts.GetAccounts() )
+							foreach ( IAccount acct in Accounts.GetAccounts() )
 							{
 								bool empty = true;
 
@@ -2419,9 +2362,9 @@ namespace Server.Gumps
 						{
 							ArrayList results = new ArrayList();
 
-							foreach ( Account acct in Accounts.GetAccounts() )
+							foreach ( IAccount acct in Accounts.GetAccounts() )
 							{
-								if ( acct.Inactive )
+								if ((acct as Account)?.Inactive == true )
 									results.Add( acct );
 							}
 
@@ -2436,9 +2379,9 @@ namespace Server.Gumps
 						{
 							ArrayList results = new ArrayList();
 
-							foreach ( Account acct in Accounts.GetAccounts() )
+							foreach ( IAccount acct in Accounts.GetAccounts() )
 							{
-								if ( acct.Banned )
+								if ((acct as Account)?.Banned == true )
 									results.Add( acct );
 							}
 
@@ -2500,9 +2443,7 @@ namespace Server.Gumps
 						{
 							index -= 50;
 
-							Account a = m_State as Account;
+							if ( m_State is Account a && index >= 0 && index < a.Length )
-
-							if ( a != null && index >= 0 && index < a.Length )
 							{
 								Mobile m = a[index];
 
@@ -2535,12 +2476,12 @@ namespace Server.Gumps
 						case 0:
 						{
 							TextRelay matchEntry = info.GetTextEntry( 0 );
-							string match = ( matchEntry == null ? null : matchEntry.Text.Trim() );
+							string match = matchEntry?.Text.Trim();
 
 							string notice = null;
 							ArrayList results = new ArrayList();
 
-							if ( match == null || match.Length == 0 )
+							if ( string.IsNullOrEmpty(match) )
 							{
 								notice = "You must enter a username to search.";
 							}
@@ -2676,17 +2617,14 @@ namespace Server.Gumps
 						}
 						case 3:
 						{
-							Account a = m.Account as Account;
+							if ( m.Account is Account a )
-
-							if ( a != null )
 							{
 								CommandLogging.WriteLine( from, "{0} {1} {2} {3}", from.AccessLevel, CommandLogging.Format( from ), "banning", CommandLogging.Format( m ) );
 								a.Banned = true;
 
 								NetState ns = m.NetState;
 
-								if ( ns != null )
+								ns?.Dispose();
-									ns.Dispose();
 
 								notice = "They have been banned.";
 							}
@@ -2758,9 +2696,7 @@ namespace Server.Gumps
 					{
 						case 3:
 						{
-							Account a = m.Account as Account;
+							if ( m.Account is Account a )
-
-							if ( a != null )
 								from.SendGump( new BanDurationGump( a ) );
 
 							break;
@@ -2976,15 +2912,12 @@ namespace Server.Gumps
 			{
 				if ( x == null && y == null )
 					return 0;
-				else if ( x == null )
+				if ( x == null )
 					return -1;
-				else if ( y == null )
+				if ( y == null )
 					return 1;
 
-				NetState a = x as NetState;
+				if ( !(x is NetState a) || !(y is NetState b) )
-				NetState b = y as NetState;
-
-				if ( a == null || b == null )
 					throw new ArgumentException();
 
 				Mobile aMob = a.Mobile;
@@ -2992,17 +2925,16 @@ namespace Server.Gumps
 
 				if ( aMob == null && bMob == null )
 					return 0;
-				else if ( aMob == null )
+				if ( aMob == null )
 					return 1;
-				else if ( bMob == null )
+				if ( bMob == null )
 					return -1;
 
 				if ( aMob.AccessLevel > bMob.AccessLevel )
 					return -1;
-				else if ( aMob.AccessLevel < bMob.AccessLevel )
+				if ( aMob.AccessLevel < bMob.AccessLevel )
 					return 1;
-				else
+				return Insensitive.Compare( aMob.Name, bMob.Name );
-					return Insensitive.Compare( aMob.Name, bMob.Name );
 			}
 		}
 
@@ -3018,33 +2950,26 @@ namespace Server.Gumps
 			{
 				if ( x == null && y == null )
 					return 0;
-				else if ( x == null )
+				if ( x == null )
 					return -1;
-				else if ( y == null )
+				if ( y == null )
 					return 1;
 
-				Account a = x as Account;
+				if ( !(x is Account a) || !(y is Account b) )
-				Account b = y as Account;
-
-				if ( a == null || b == null )
 					throw new ArgumentException();
 
-				AccessLevel aLevel, bLevel;
+				GetAccountInfo( a, out var aLevel, out var aOnline );
-				bool aOnline, bOnline;
+				GetAccountInfo( b, out var bLevel, out var bOnline );
-
-				GetAccountInfo( a, out aLevel, out aOnline );
-				GetAccountInfo( b, out bLevel, out bOnline );
 
 				if ( aOnline && !bOnline )
 					return -1;
-				else if ( bOnline && !aOnline )
+				if ( bOnline && !aOnline )
 					return 1;
-				else if ( aLevel > bLevel )
+				if ( aLevel > bLevel )
 					return -1;
-				else if ( aLevel < bLevel )
+				if ( aLevel < bLevel )
 					return 1;
-				else
+				return Insensitive.Compare( a.Username, b.Username );
-					return Insensitive.Compare( a.Username, b.Username );
 			}
 		}
 	}

Scripts/Gumps/CategorizedAddGump.cs

@@ -315,9 +315,8 @@ namespace Server.Gumps
 
 				AddButton( x + SetOffsetX, y + SetOffsetY, SetButtonID1, SetButtonID2, i + 4, GumpButtonType.Reply, 0 );
 
-				if ( node is CAGObject )
+				if ( node is CAGObject obj )
 				{
-					CAGObject obj = (CAGObject)node;
 					int itemID = obj.ItemID;
 
 					Rectangle2D bounds = ItemBounds.Table[itemID];

Scripts/Gumps/CommentsGump.cs

@@ -27,8 +27,7 @@ namespace Server.Gumps
 
 		private static void OnTarget( Mobile from, object target )
 		{
-			Mobile m = target as Mobile;
+			if ( !(target is Mobile m) || !m.Player )
-			if ( m == null || !m.Player )
 			{
 				from.SendMessage( "You must target a player." );
 				return;

Scripts/Gumps/ConfirmHouseResize.cs

@@ -119,8 +119,8 @@ namespace Server.Gumps
 
 							if ( box.TryDropItem( m_Mobile, toGive, false ) )
 							{
-								if ( toGive is BankCheck )
+								if ( toGive is BankCheck check )
-									m_Mobile.SendLocalizedMessage( 1060397, ( (BankCheck)toGive ).Worth.ToString() ); // ~1_AMOUNT~ gold has been deposited into your bank box.
+									m_Mobile.SendLocalizedMessage( 1060397, check.Worth.ToString() ); // ~1_AMOUNT~ gold has been deposited into your bank box.
 
 								m_House.RemoveKeys( m_Mobile );
 								new TempNoHousingRegion( m_House, m_Mobile );

Scripts/Gumps/Go/GoGump.cs

@@ -177,10 +177,10 @@ namespace Server.Gumps
 				object child = node.Children[index];
 				string name = "";
 
-				if ( child is ParentNode )
+				if ( child is ParentNode parentNode )
-					name = ((ParentNode)child).Name;
+					name = parentNode.Name;
-				else if ( child is ChildNode )
+				else if ( child is ChildNode childNode )
-					name = ((ChildNode)child).Name;
+					name = childNode.Name;
 
 				AddImageTiled( x, y, EntryWidth, EntryHeight, EntryGumpID );
 				AddLabelCropped( x + TextOffsetX, y, EntryWidth - TextOffsetX, EntryHeight, TextHue, name );
@@ -229,16 +229,10 @@ namespace Server.Gumps
 					{
 						object o = m_Node.Children[index];
 
-						if ( o is ParentNode )
+						if ( o is ParentNode node )
-						{
+							from.SendGump( new GoGump( 0, from, m_Tree, node ) );
-							from.SendGump( new GoGump( 0, from, m_Tree, (ParentNode)o ) );
-						}
 						else
-						{
+							from.MoveToWorld(((ChildNode)o).Location, m_Tree.Map );
-							ChildNode n = (ChildNode)o;
-
-							from.MoveToWorld( n.Location, m_Tree.Map );
-						}
 					}
 
 					break;

Scripts/Gumps/Guilds/GuildChangeTypeGump.cs

@@ -80,8 +80,8 @@ namespace Server.Gumps
 
 			if ( Guild.NewGuildSystem )
 			{
-				if ( m_Mobile is PlayerMobile )
+				if ( m_Mobile is PlayerMobile mobile )
-					m_Mobile.SendGump( new GuildInfoGump( (PlayerMobile)m_Mobile, m_Guild ) );
+					mobile.SendGump( new GuildInfoGump( mobile, m_Guild ) );
 
 				return;
 			}

Scripts/Gumps/Guilds/New Guild System/AdvancedSearch.cs

@@ -51,9 +51,7 @@ namespace Server.Guilds
 		{
 			base.OnResponse( sender, info );
 
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !IsMember( pm, guild ) )
-
-			if ( pm == null || !IsMember( pm, guild ) )
 				return;
 
 			GuildDisplayType display = m_Display;

Scripts/Gumps/Guilds/New Guild System/BaseGuildListGump.cs

@@ -139,9 +139,7 @@ namespace Server.Guilds
 		{
 			base.OnResponse( sender, info );
 
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !IsMember( pm, guild ) )
-
-			if ( pm == null || !IsMember( pm, guild ) )
 				return;
 
 			int id = info.ButtonID;

Scripts/Gumps/Guilds/New Guild System/Create Guild Gump.cs

@@ -43,9 +43,7 @@ namespace Server.Guilds
 
 		public override void OnResponse( NetState sender, RelayInfo info )
 		{
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || pm.Guild != null )
-
-			if ( pm == null || pm.Guild != null )
 				return;		//Sanity
 
 			switch( info.ButtonID )

Scripts/Gumps/Guilds/New Guild System/DiplomacyGump.cs

@@ -272,9 +272,7 @@ namespace Server.Guilds
 		{
 			base.OnResponse( sender, info );
 
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !IsMember( pm, guild ) )
-
-			if ( pm == null || !IsMember( pm, guild ) )
 				return;
 
 			if ( AllowAdvancedSearch && info.ButtonID == 8 )

Scripts/Gumps/Guilds/New Guild System/GuildMemberInfoGump.cs

@@ -62,9 +62,7 @@ namespace Server.Guilds
 
 		public override void OnResponse( NetState sender, RelayInfo info )
 		{
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !IsMember( pm, guild ) || !IsMember( m_Member, guild ) )
-
-			if ( pm == null || !IsMember( pm, guild ) || !IsMember( m_Member, guild ) )
 				return;
 
 			RankDefinition playerRank = pm.GuildRank;
@@ -192,15 +190,10 @@ namespace Server.Guilds
 
 		public void SetTitle_Callback( Mobile from, string text )
 		{
-			PlayerMobile pm = from as PlayerMobile;
+			if (!(from is PlayerMobile pm) || m_Member == null )
-			PlayerMobile targ = m_Member;
-
-			if ( pm == null || targ == null )
 				return;
 
-			Guild g = targ.Guild as Guild;
+			if ( !(m_Member.Guild is Guild g) || !IsMember( pm, g ) || !(pm.GuildRank.GetFlag( RankFlags.CanSetGuildTitle ) && (pm.GuildRank.Rank > m_Member.GuildRank.Rank || pm == m_Member)) )
-
-			if ( g == null || !IsMember( pm, g ) || !(pm.GuildRank.GetFlag( RankFlags.CanSetGuildTitle ) && (pm.GuildRank.Rank > targ.GuildRank.Rank || pm == targ)) )
 			{
 				if ( m_Member.GuildTitle == null || m_Member.GuildTitle.Length <= 0 )
 					pm.SendLocalizedMessage( 1070746 ); // You don't have the permission to set that member's guild title.
@@ -220,11 +213,11 @@ namespace Server.Guilds
 			else
 			{
 				if ( Insensitive.Equals( title, "none" ) )
-					targ.GuildTitle = null;
+					m_Member.GuildTitle = null;
 				else
-					targ.GuildTitle = title;
+					m_Member.GuildTitle = title;
 
-				pm.SendLocalizedMessage( 1063156, targ.Name ); // The guild information for ~1_val~ has been updated.
+				pm.SendLocalizedMessage( 1063156, m_Member.Name ); // The guild information for ~1_val~ has been updated.
 			}
 		}
 	}

Scripts/Gumps/Guilds/New Guild System/GuildRosterGump.cs

@@ -182,9 +182,7 @@ namespace Server.Guilds
 		{
 			base.OnResponse( sender, info );
 
-			PlayerMobile pm = sender.Mobile as PlayerMobile;
+			if ( !(sender.Mobile is PlayerMobile pm) || !IsMember( pm, guild ) )
-
-			if ( pm == null || !IsMember( pm, guild ) )
 				return;
 
 			if ( info.ButtonID == 8 )

Scripts/Gumps/Guilds/RecruitTarget.cs

@@ -22,15 +22,13 @@ namespace Server.Gumps
 			if ( GuildGump.BadMember( m_Mobile, m_Guild ) )
 				return;
 
-			if ( targeted is Mobile )
+			if ( targeted is Mobile m )
 			{
-				Mobile m = (Mobile)targeted;
-
 				PlayerState guildState = PlayerState.Find( m_Guild.Leader );
 				PlayerState targetState = PlayerState.Find( m );
 
-				Faction guildFaction = ( guildState == null ? null : guildState.Faction );
+				Faction guildFaction = guildState?.Faction;
-				Faction targetFaction = ( targetState == null ? null : targetState.Faction );
+				Faction targetFaction = targetState?.Faction;
 
 				if ( !m.Player )
 				{

Scripts/Gumps/HouseDemolishGump.cs

@@ -115,13 +115,15 @@ namespace Server.Gumps
 								toGive = new BankCheck( m_House.Price );
 						}
 
-						if (AccountGold.Enabled && toGive is BankCheck)
+						BankCheck check = toGive as BankCheck;
+
+						if (AccountGold.Enabled && check != null)
 						{
-							var worth = ((BankCheck)toGive).Worth;
+							var worth = check.Worth;
 
 							if (m_Mobile.Account != null && m_Mobile.Account.DepositGold(worth))
 							{
-								toGive.Delete();
+								check.Delete();
 
 								m_Mobile.SendLocalizedMessage(1060397, worth.ToString("#,0"));
 								// ~1_AMOUNT~ gold has been deposited into your bank box.
@@ -138,8 +140,8 @@ namespace Server.Gumps
 
 							if ( box.TryDropItem( m_Mobile, toGive, false ) )
 							{
-								if ( toGive is BankCheck )
+								if ( check != null )
-									m_Mobile.SendLocalizedMessage( 1060397, ( (BankCheck)toGive ).Worth.ToString() ); // ~1_AMOUNT~ gold has been deposited into your bank box.
+									m_Mobile.SendLocalizedMessage( 1060397, check.Worth.ToString() ); // ~1_AMOUNT~ gold has been deposited into your bank box.
 
 								m_House.RemoveKeys( m_Mobile );
 								m_House.Delete();

Scripts/Gumps/HouseGumpAOS.cs

@@ -127,10 +127,8 @@ namespace Server.Gumps
 				string name;
 				int labelHue = LabelHue;
 
-				if ( m is PlayerVendor )
+				if ( m is PlayerVendor vendor )
 				{
-					PlayerVendor vendor = (PlayerVendor) m;
-
 					name = vendor.ShopName;
 
 					if ( vendor.IsOwner( from ) )
@@ -763,10 +761,10 @@ namespace Server.Gumps
 
 						foreach ( Mobile mobile in newHouse.InternalizedVendors )
 						{
-							if ( mobile is PlayerVendor )
+							if ( mobile is PlayerVendor vendor )
-								((PlayerVendor)mobile).House = newHouse;
+								vendor.House = newHouse;
-							else if ( mobile is PlayerBarkeeper )
+							else if ( mobile is PlayerBarkeeper barkeeper )
-								((PlayerBarkeeper)mobile).House = newHouse;
+								barkeeper.House = newHouse;
 						}
 
 						if ( house.MovingCrate != null )

Scripts/Gumps/NoticeGump.cs

@@ -28,8 +28,8 @@ namespace Server.Gumps
 			AddImageTiled( 10, 40, width - 20, height - 80, 2624 );
 			AddAlphaRegion( 10, 40, width - 20, height - 80 );
 
-			if ( content is int )
+			if ( content is int i )
-				AddHtmlLocalized( 10, 40, width - 20, height - 80, (int)content, contentColor, false, true );
+				AddHtmlLocalized( 10, 40, width - 20, height - 80, i, contentColor, false, true );
 			else if ( content is string )
 				AddHtml( 10, 40, width - 20, height - 80, String.Format( "<BASEFONT COLOR=#{0:X6}>{1}</BASEFONT>", contentColor, content ), false, true );
 
@@ -41,8 +41,8 @@ namespace Server.Gumps
 
 		public override void OnResponse( Server.Network.NetState sender, RelayInfo info )
 		{
-			if ( info.ButtonID == 1 && m_Callback != null )
+			if ( info.ButtonID == 1 )
-				m_Callback( sender.Mobile, m_State );
+				m_Callback?.Invoke( sender.Mobile, m_State );
 		}
 	}
 }

Scripts/Gumps/PlayerVendorGumps.cs

@@ -208,10 +208,9 @@ namespace Server.Gumps
 			AddHtmlLocalized( 40, 108, 260, 20, 1062509, 0x7FFF, false, false ); // Shop Name:
 			AddLabel( 140, 106, 0x66D, vendor.ShopName );
 
-			if ( vendor is RentedVendor )
+			if ( vendor is RentedVendor rentedVendor )
 			{
-				int days, hours;
+				rentedVendor.ComputeRentalExpireDelay( out var days, out var hours );
-				((RentedVendor)vendor).ComputeRentalExpireDelay( out days, out hours );
 
 				AddLabel( 38, 132, 0x480, String.Format( "Location rental will expire in {0} day{1} and {2} hour{3}.", days, days != 1 ? "s" : "", hours, hours != 1 ? "s" : "" ) );
 			}
@@ -544,10 +543,10 @@ namespace Server.Gumps
 
 			Mobile from = state.Mobile;
 
-			if ( m_Vendor is PlayerVendor && !((PlayerVendor)m_Vendor).CanInteractWith( from, true ) )
+			if ( m_Vendor is PlayerVendor vendor && !vendor.CanInteractWith( from, true ) )
 				return;
 
-			if ( m_Vendor is PlayerBarkeeper && !((PlayerBarkeeper)m_Vendor).IsOwner( from ) )
+			if ( m_Vendor is PlayerBarkeeper barkeeper && !barkeeper.IsOwner( from ) )
 				return;
 
 			if ( info.ButtonID == 0 )
@@ -738,10 +737,10 @@ namespace Server.Gumps
 				if ( m_Item.Deleted )
 					return;
 
-				if ( m_Vendor is PlayerVendor && !((PlayerVendor)m_Vendor).CanInteractWith( m_Mob, true ) )
+				if ( m_Vendor is PlayerVendor vendor && !vendor.CanInteractWith( m_Mob, true ) )
 					return;
 
-				if ( m_Vendor is PlayerBarkeeper && !((PlayerBarkeeper)m_Vendor).IsOwner( m_Mob ) )
+				if ( m_Vendor is PlayerBarkeeper barkeeper && !barkeeper.IsOwner( m_Mob ) )
 					return;
 
 				m_Item.Hue = hue;
@@ -767,10 +766,10 @@ namespace Server.Gumps
 				if ( m_Vendor.Deleted )
 					return;
 
-				if ( m_Vendor is PlayerVendor && !((PlayerVendor)m_Vendor).CanInteractWith( m_Mob, true ) )
+				if ( m_Vendor is PlayerVendor vendor && !vendor.CanInteractWith( m_Mob, true ) )
 					return;
 
-				if ( m_Vendor is PlayerBarkeeper && !((PlayerBarkeeper)m_Vendor).IsOwner( m_Mob ) )
+				if ( m_Vendor is PlayerBarkeeper barkeeper && !barkeeper.IsOwner( m_Mob ) )
 					return;
 
 				if ( m_FacialHair )

Scripts/Gumps/Props/PropsGump.cs

@@ -205,10 +205,8 @@ namespace Server.Gumps
 				{
 					AddImageTiled( x - OffsetSize, y, TotalWidth, EntryHeight, BackGumpID + 4 );
 				}
-				else if ( o is Type )
+				else if ( o is Type type )
 				{
-					Type type = (Type)o;
-
 					AddImageTiled( x, y, TypeWidth, EntryHeight, EntryGumpID );
 					AddLabelCropped( x + TextOffsetX, y, TypeWidth - TextOffsetX, EntryHeight, TextHue, type.Name );
 					x += TypeWidth + OffsetSize;
@@ -216,10 +214,8 @@ namespace Server.Gumps
 					if ( SetGumpID != 0 )
 						AddImageTiled( x, y, SetWidth, EntryHeight, SetGumpID );
 				}
-				else if ( o is PropertyInfo )
+				else if ( o is PropertyInfo prop )
 				{
-					PropertyInfo prop = (PropertyInfo)o;
-
 					AddImageTiled( x, y, NameWidth, EntryHeight, EntryGumpID );
 					AddLabelCropped( x + TextOffsetX, y, NameWidth - TextOffsetX, EntryHeight, TextHue, prop.Name );
 					x += NameWidth + OffsetSize;
@@ -321,10 +317,10 @@ namespace Server.Gumps
 							from.SendGump( new SetListOptionGump( prop, from, m_Object, m_Stack, m_Page, m_List, m_PoisonNames, m_PoisonValues ) );
 						else if ( IsType( type, typeofMap ) )
 							from.SendGump( new SetListOptionGump( prop, from, m_Object, m_Stack, m_Page, m_List, Map.GetMapNames(), Map.GetMapValues() ) );
-						else if ( IsType( type, typeofSkills ) && m_Object is Mobile )
+						else if ( IsType( type, typeofSkills ) && m_Object is Mobile mobile )
 						{
-							from.SendGump( new PropertiesGump( from, m_Object, m_Stack, m_List, m_Page ) );
+							from.SendGump( new PropertiesGump( from, mobile, m_Stack, m_List, m_Page ) );
-							from.SendGump( new SkillsGump( from, (Mobile)m_Object ) );
+							from.SendGump( new SkillsGump( from, mobile ) );
 						}
 						else if ( HasAttribute( type, typeofPropertyObject, true ) )
 						{
@@ -378,9 +374,7 @@ namespace Server.Gumps
 			if ( attrs.Length == 0 )
 				return new string[0];
 
-			CustomEnumAttribute ce = attrs[0] as CustomEnumAttribute;
+			if ( !(attrs[0] is CustomEnumAttribute ce) )
-
-			if ( ce == null )
 				return new string[0];
 
 			return ce.Names;
@@ -465,60 +459,56 @@ namespace Server.Gumps
 			{
 				return "-null-";
 			}
-			else if ( o is string )
+			if ( o is string s )
 			{
-				return String.Format( "\"{0}\"", (string)o );
+				return String.Format( "\"{0}\"", s );
 			}
-			else if ( o is bool )
+			if ( o is bool )
 			{
 				return o.ToString();
 			}
-			else if ( o is char )
+			if ( o is char c )
 			{
-				return String.Format( "0x{0:X} '{1}'", (int)(char)o, (char)o );
+				return String.Format( "0x{0:X} '{1}'", (int)c, c );
 			}
-			else if ( o is Serial )
+			if ( o is Serial serial )
 			{
-				Serial s = (Serial)o;
+				if ( serial.IsValid )
-
-				if ( s.IsValid )
 				{
-					if ( s.IsItem )
+					if ( serial.IsItem )
 					{
-						return String.Format( "(I) 0x{0:X}", s.Value );
+						return String.Format( "(I) 0x{0:X}", serial.Value );
 					}
-					else if ( s.IsMobile )
+					if ( serial.IsMobile )
 					{
-						return String.Format( "(M) 0x{0:X}", s.Value );
+						return String.Format( "(M) 0x{0:X}", serial.Value );
 					}
 				}
 
-				return String.Format( "(?) 0x{0:X}", s.Value );
+				return String.Format( "(?) 0x{0:X}", serial.Value );
 			}
-			else if ( o is byte || o is sbyte || o is short || o is ushort || o is int || o is uint || o is long || o is ulong )
+			if ( o is byte || o is sbyte || o is short || o is ushort || o is int || o is uint || o is long || o is ulong )
 			{
 				return String.Format( "{0} (0x{0:X})", o );
 			}
-			else if ( o is Mobile )
+			if ( o is Mobile mobile )
 			{
-				return String.Format( "(M) 0x{0:X} \"{1}\"", ((Mobile)o).Serial.Value, ((Mobile)o).Name );
+				return String.Format( "(M) 0x{0:X} \"{1}\"", mobile.Serial.Value, mobile.Name );
 			}
-			else if ( o is Item )
+			if ( o is Item item )
 			{
-				return String.Format( "(I) 0x{0:X}", ((Item)o).Serial.Value );
+				return String.Format( "(I) 0x{0:X}", item.Serial.Value );
 			}
-			else if ( o is Type )
+			if ( o is Type type )
 			{
-				return ((Type)o).Name;
+				return type.Name;
 			}
-			else if ( o is TextDefinition )
+			if ( o is TextDefinition definition )
 			{
-				return ((TextDefinition)o).Format( true );
+				return definition.Format( true );
-			}
-			else
-			{
-				return o.ToString();
 			}
+
+			return o.ToString();
 		}
 
 		private ArrayList BuildList()
@@ -653,56 +643,52 @@ namespace Server.Gumps
 			{
 				return "-null-";
 			}
-			else if ( o is string )
+			if ( o is string s )
 			{
-				return String.Format( "\"{0}\"", (string)o );
+				return String.Format( "\"{0}\"", s );
 			}
-			else if ( o is bool )
+			if ( o is bool )
 			{
 				return o.ToString();
 			}
-			else if ( o is char )
+			if ( o is char c )
 			{
-				return String.Format( "0x{0:X} '{1}'", (int)(char)o, (char)o );
+				return String.Format( "0x{0:X} '{1}'", (int)c, c );
 			}
-			else if ( o is Serial )
+			if ( o is Serial serial )
 			{
-				Serial s = (Serial)o;
+				if ( serial.IsValid )
-
-				if ( s.IsValid )
 				{
-					if ( s.IsItem )
+					if ( serial.IsItem )
 					{
-						return String.Format( "(I) 0x{0:X}", s.Value );
+						return String.Format( "(I) 0x{0:X}", serial.Value );
 					}
-					else if ( s.IsMobile )
+					if ( serial.IsMobile )
 					{
-						return String.Format( "(M) 0x{0:X}", s.Value );
+						return String.Format( "(M) 0x{0:X}", serial.Value );
 					}
 				}
 
-				return String.Format( "(?) 0x{0:X}", s.Value );
+				return String.Format( "(?) 0x{0:X}", serial.Value );
 			}
-			else if ( o is byte || o is sbyte || o is short || o is ushort || o is int || o is uint || o is long || o is ulong )
+			if ( o is byte || o is sbyte || o is short || o is ushort || o is int || o is uint || o is long || o is ulong )
 			{
 				return String.Format( "{0} (0x{0:X})", o );
 			}
-			else if ( o is Mobile )
+			if ( o is Mobile mobile )
 			{
-				return String.Format( "(M) 0x{0:X} \"{1}\"", ((Mobile)o).Serial.Value, ((Mobile)o).Name );
+				return String.Format( "(M) 0x{0:X} \"{1}\"", mobile.Serial.Value, mobile.Name );
 			}
-			else if ( o is Item )
+			if ( o is Item item )
 			{
-				return String.Format( "(I) 0x{0:X}", ((Item)o).Serial.Value );
+				return String.Format( "(I) 0x{0:X}", item.Serial.Value );
 			}
-			else if ( o is Type )
+			if ( o is Type type )
 			{
-				return ((Type)o).Name;
+				return type.Name;
-			}
-			else
-			{
-				return o.ToString();
 			}
+
+			return o.ToString();
 		}
 
 		private class PropertySorter : IComparer
@@ -717,9 +703,9 @@ namespace Server.Gumps
 			{
 				if ( x == null && y == null )
 					return 0;
-				else if ( x == null )
+				if ( x == null )
 					return -1;
-				else if ( y == null )
+				if ( y == null )
 					return 1;
 
 				PropertyInfo a = x as PropertyInfo;
@@ -759,9 +745,9 @@ namespace Server.Gumps
 			{
 				if ( x == null && y == null )
 					return 0;
-				else if ( x == null )
+				if ( x == null )
 					return -1;
-				else if ( y == null )
+				if ( y == null )
 					return 1;
 
 				if ( !(x is DictionaryEntry) || !(y is DictionaryEntry) )
@@ -770,10 +756,7 @@ namespace Server.Gumps
 				DictionaryEntry de1 = (DictionaryEntry)x;
 				DictionaryEntry de2 = (DictionaryEntry)y;
 
-				Type a = (Type)de1.Key;
+				return GetDistance( (Type)de1.Key ).CompareTo( GetDistance( (Type)de2.Key ) );
-				Type b = (Type)de2.Key;
-
-				return GetDistance( a ).CompareTo( GetDistance( b ) );
 			}
 		}
 	}

Scripts/Gumps/Props/SetGump.cs

@@ -78,8 +78,8 @@ namespace Server.Gumps
 
 			if ( val == null )
 				initialText = "";
-			else if ( val is TextDefinition )
+			else if ( val is TextDefinition definition )
-				initialText = ((TextDefinition)val).GetValue();
+				initialText = definition.GetValue();
 			else
 				initialText = val.ToString();
 

Scripts/Gumps/Props/SetPoint2DGump.cs

@@ -148,9 +148,7 @@ namespace Server.Gumps
 
 			protected override void OnTarget( Mobile from, object targeted )
 			{
-				IPoint3D p = targeted as IPoint3D;
+				if ( targeted is IPoint3D p )
-
-				if ( p != null )
 				{
 					try
 					{

Scripts/Gumps/Props/SetPoint3DGump.cs

@@ -153,9 +153,7 @@ namespace Server.Gumps
 
 			protected override void OnTarget( Mobile from, object targeted )
 			{
-				IPoint3D p = targeted as IPoint3D;
+				if ( targeted is IPoint3D p )
-
-				if ( p != null )
 				{
 					try
 					{

Scripts/Gumps/ReportMurderer.cs

@@ -66,7 +66,7 @@ namespace Server.Gumps
 				Titles.AwardKarma( g, karmaAward, true );
 			}
 
-			if ( m is PlayerMobile && ((PlayerMobile)m).NpcGuild == NpcGuild.ThievesGuild )
+			if ( m is PlayerMobile mobile && mobile.NpcGuild == NpcGuild.ThievesGuild )
 				return;
 
 			if ( killers.Count > 0 )
@@ -164,9 +164,8 @@ namespace Server.Gumps
 							Timer.DelayCall(TimeSpan.FromMinutes(10), new TimerStateCallback(ReportedListExpiry_Callback), new object[] { from, killer });
 						}
 
-						if (killer is PlayerMobile)
+						if (killer is PlayerMobile pk)
 						{
-							PlayerMobile pk = (PlayerMobile)killer;
 							pk.ResetKillTime();
 							pk.SendLocalizedMessage(1049067);//You have been reported for murder!
 

Scripts/Gumps/ResurrectGump.cs

@@ -192,12 +192,12 @@ namespace Server.Gumps
 					}
 				}
 
-				if ( m_FromSacrifice && from is PlayerMobile )
+				if ( m_FromSacrifice && from is PlayerMobile mobile )
 				{
-					((PlayerMobile)from).AvailableResurrects -= 1;
+					mobile.AvailableResurrects -= 1;
 
-					Container pack = from.Backpack;
+					Container pack = mobile.Backpack;
-					Container corpse = from.Corpse;
+					Container corpse = mobile.Corpse;
 
 					if ( pack != null && corpse != null )
 					{

Scripts/Gumps/VendorRentalGumps.cs

@@ -325,9 +325,7 @@ namespace Server.Gumps
 				if ( !m_Contract.IsUsableBy( from, true, false, true, true ) )
 					return;
 
-				Mobile mob = targeted as Mobile;
+				if ( !(targeted is Mobile mob) || !mob.Player || !mob.Alive || mob == from )
-
-				if ( mob == null || !mob.Player || !mob.Alive || mob == from )
 				{
 					from.SendLocalizedMessage(1071984); //That is not a valid target for a rental contract!
 				}

Scripts/Gumps/ViewHousesGump.cs

@@ -26,8 +26,8 @@ namespace Server.Gumps
 
 		public static void ViewHouses_OnTarget( Mobile from, object targeted )
 		{
-			if ( targeted is Mobile )
+			if ( targeted is Mobile mobile )
-				from.SendGump( new ViewHousesGump( from, GetHouses( (Mobile)targeted ), null ) );
+				from.SendGump( new ViewHousesGump( from, GetHouses( mobile ), null ) );
 		}
 
 		private class HouseComparer : IComparer<BaseHouse>
@@ -44,9 +44,7 @@ namespace Server.Gumps
 		{
 			List<BaseHouse> list = new List<BaseHouse>();
 
-			Account acct = owner.Account as Account;
+			if ( !(owner.Account is Account acct) )
-
-			if ( acct == null )
 			{
 				list.AddRange( BaseHouse.GetHouses( owner ) );
 			}
@@ -114,21 +112,21 @@ namespace Server.Gumps
 
 					AddHtml( 15, 40 + ((i % 15) * 20),  20, 20, Color( String.Format( "{0}.", i+1 ), White ), false, false );
 
-					if ( name is int )
+					if ( name is int nameInt )
-						AddHtmlLocalized( 35, 40 + ((i % 15) * 20), 160, 20, (int)name, White16, false, false );
+						AddHtmlLocalized( 35, 40 + ((i % 15) * 20), 160, 20, nameInt, White16, false, false );
-					else if ( name is string )
+					else
-						AddHtml( 35, 40 + ((i % 15) * 20), 160, 20, Color( (string)name, White ), false, false );
+						AddHtml( 35, 40 + ((i % 15) * 20), 160, 20, Color( name.ToString(), White ), false, false );
 
 					AddButton( 198, 39 + ((i % 15) * 20), 4005, 4007, i+1, GumpButtonType.Reply, 0 );
 				}
 			}
 			else
 			{
-				string houseName, owner, location;
+				string location;
 				Map map = sel.Map;
 
-				houseName = (sel.Sign == null) ? "An Unnamed House" : sel.Sign.GetName();
+				var houseName = (sel.Sign == null) ? "An Unnamed House" : sel.Sign.GetName();
-				owner = (sel.Owner == null) ? "nobody" : sel.Owner.Name;
+				var owner = (sel.Owner == null) ? "nobody" : sel.Owner.Name;
 
 				int xLong = 0, yLat = 0, xMins = 0, yMins = 0;
 				bool xEast = false, ySouth = false;
@@ -136,7 +134,7 @@ namespace Server.Gumps
 				bool valid = Sextant.Format( sel.Location, map, ref xLong, ref yLat, ref xMins, ref yMins, ref xEast, ref ySouth );
 
 				if ( valid )
-					location = String.Format( "{0}° {1}'{2}, {3}° {4}'{5}", yLat, yMins, ySouth ? "S" : "N", xLong, xMins, xEast ? "E" : "W" );
+					location = String.Format( "{0}° {1}'{2}, {3}° {4}'{5}", yLat, yMins, ySouth ? "S" : "N", xLong, xMins, xEast ? "E" : "W" );
 				else
 					location = "unknown";
 

Scripts/Gumps/WarningGump.cs

@@ -35,8 +35,8 @@ namespace Server.Gumps
 			AddImageTiled( 10, 40, width - 20, height - 80, 2624 );
 			AddAlphaRegion( 10, 40, width - 20, height - 80 );
 
-			if ( content is int )
+			if ( content is int i )
-				AddHtmlLocalized( 10, 40, width - 20, height - 80, (int)content, contentColor, false, true );
+				AddHtmlLocalized( 10, 40, width - 20, height - 80, i, contentColor, false, true );
 			else if ( content is string )
 				AddHtml( 10, 40, width - 20, height - 80, String.Format( "<BASEFONT COLOR=#{0:X6}>{1}</BASEFONT>", contentColor, content ), false, true );
 
@@ -55,10 +55,13 @@ namespace Server.Gumps
 
 		public override void OnResponse( Server.Network.NetState sender, RelayInfo info )
 		{
-			if ( info.ButtonID == 1 && m_Callback != null )
+			if (m_Callback == null)
+				return;
+
+			if ( info.ButtonID == 1)
 				m_Callback( sender.Mobile, true, m_State );
-			else if ( m_Callback != null )
+			else
-				m_Callback( sender.Mobile, false, m_State );
+				m_Callback.Invoke( sender.Mobile, false, m_State );
 		}
 	}
 }

Scripts/Gumps/WhoGump.cs

@@ -127,7 +127,7 @@ namespace Server.Gumps
 			{
 				Mobile m = states[i].Mobile;
 
-				if ( m != null && (m == owner || !m.Hidden || owner.AccessLevel >= m.AccessLevel || (m is PlayerMobile && ((PlayerMobile)m).VisibilityList.Contains( owner ) ) ) )
+				if ( m != null && (m == owner || !m.Hidden || owner.AccessLevel >= m.AccessLevel || (m is PlayerMobile mobile && mobile.VisibilityList.Contains( owner ) ) ) )
 				{
 					if ( filter != null && ( m.Name == null || m.Name.ToLower().IndexOf( filter ) < 0 ) )
 						continue;
@@ -281,7 +281,7 @@ namespace Server.Gumps
 							from.SendMessage( "That player is no longer online." );
 							from.SendGump( new WhoGump( from, m_Mobiles, m_Page ) );
 						}
-						else if ( m == from || !m.Hidden || from.AccessLevel >= m.AccessLevel || (m is PlayerMobile && ((PlayerMobile)m).VisibilityList.Contains( from ))) 
+						else if ( m == from || !m.Hidden || from.AccessLevel >= m.AccessLevel || (m is PlayerMobile mobile && mobile.VisibilityList.Contains( from )))
 						{
 							from.SendGump( new ClientGump( from, m.NetState ) );
 						}

Scripts/Gumps/YoungGumps.cs

@@ -82,9 +82,7 @@ namespace Server.Gumps
 
 			if ( info.ButtonID == 1 )
 			{
-				Account acc = from.Account as Account;
+				if ( from.Account is Account acc )
-
-				if ( acc != null )
 				{
 					acc.RemoveYoungStatus( 502085 ); // You have chosen to renounce your `Young' player status.
 				}

Scripts/Holiday Stuff/Halloween/2012/Engines/PlayerZombies.cs

@@ -69,18 +69,8 @@ namespace Server.Engines.Events
 
 		public static void EventSink_PlayerDeath( PlayerDeathEventArgs e )
 		{
-			if ( e.Mobile != null && !e.Mobile.Deleted ) /* not sure .. better safe than sorry? */
+			if ( e.Mobile is PlayerMobile player && !player.Deleted && m_Timer.Running && !m_DeathQueue.Contains( player ) && m_DeathQueue.Count < m_DeathQueueLimit )
-			{
+				m_DeathQueue.Add( player );
-				if ( e.Mobile is PlayerMobile )
-				{
-					PlayerMobile player = e.Mobile as PlayerMobile;
-
-					if ( m_Timer.Running && !m_DeathQueue.Contains( player ) && m_DeathQueue.Count < m_DeathQueueLimit )
-					{
-						m_DeathQueue.Add( player );
-					}
-				}
-			}
 		}
 
 		private static void Clear_Callback()

Scripts/Holiday Stuff/Valentine/2012/Items/CupidsArrow.cs

@@ -84,10 +84,8 @@ namespace Server.Items
 			if ( IsSigned || !IsChildOf( from.Backpack ) )
 				return;
 
-			if ( targeted is Mobile )
+			if ( targeted is Mobile m )
 			{
-				Mobile m = (Mobile)targeted;
-
 				if ( !m.Alive )
 				{
 					from.SendLocalizedMessage( 1152269 ); // That target is dead and even Cupid's arrow won't make them love you.

Scripts/Items/Addons/ArcheryButteAddon.cs

@@ -134,9 +134,7 @@ namespace Server.Items
 
 		public void Fire( Mobile from )
 		{
-			BaseRanged bow = from.Weapon as BaseRanged;
+			if ( !(from.Weapon is BaseRanged bow) )
-
-			if ( bow == null )
 			{
 				SendLocalizedMessageTo( from, 500593 ); // You must practice with ranged weapons on this.
 				return;