ML quest system; first SVN release.

Secondary changes:
- Region fixes, mainly for New Haven.
- Recipe system changes.
- Enabled ML craftables.
- Dyeing/cutting restrictions for quest items.
- Moved IsInvulnerable from BaseVendor to BaseCreature.
- Moved RandomBrightHue to Utility.
- Items no longer decay when attached to a spawner.
- Quest item hue is now faked through packets, instead of overriding Hue.
- Re-enabled item drag effects for SA clients.
- Fixed AssignRandomFacialHair bug in Utility.
- Added random hue comments to Utility.

Scripts/Engines/MLQuests/Objectives/BaseObjective.cs

@@ -0,0 +1,214 @@
+using System;
+using Server;
+using Server.Engines.MLQuests;
+using Server.Mobiles;
+using Server.Gumps;
+using System.Collections.Generic;
+
+namespace Server.Engines.MLQuests.Objectives
+{
+	public abstract class BaseObjective
+	{
+		public virtual bool IsTimed { get { return false; } }
+		public virtual TimeSpan Duration { get { return TimeSpan.Zero; } }
+
+		public BaseObjective()
+		{
+		}
+
+		public virtual bool CanOffer( BaseCreature quester, PlayerMobile pm )
+		{
+			return true;
+		}
+
+		public abstract void WriteToGump( Gump g, ref int y );
+
+		public virtual BaseObjectiveInstance CreateInstance( MLQuestInstance instance )
+		{
+			return null;
+		}
+	}
+
+	public abstract class BaseObjectiveInstance
+	{
+		private MLQuestInstance m_Instance;
+		private DateTime m_EndTime;
+		private bool m_Expired;
+
+		public MLQuestInstance Instance
+		{
+			get { return m_Instance; }
+		}
+
+		public bool IsTimed
+		{
+			get { return ( m_EndTime != DateTime.MinValue ); }
+		}
+
+		public DateTime EndTime
+		{
+			get { return m_EndTime; }
+			set { m_EndTime = value; }
+		}
+
+		public bool Expired
+		{
+			get { return m_Expired; }
+			set { m_Expired = value; }
+		}
+
+		public BaseObjectiveInstance( MLQuestInstance instance, BaseObjective obj )
+		{
+			m_Instance = instance;
+
+			if ( obj.IsTimed )
+				m_EndTime = DateTime.Now + obj.Duration;
+		}
+
+		public virtual void WriteToGump( Gump g, ref int y )
+		{
+			if ( IsTimed )
+				WriteTimeRemaining( g, ref y, ( m_EndTime > DateTime.Now ) ? ( m_EndTime - DateTime.Now ) : TimeSpan.Zero );
+		}
+
+		public static void WriteTimeRemaining( Gump g, ref int y, TimeSpan timeRemaining )
+		{
+			g.AddHtmlLocalized( 103, y, 120, 16, 1062379, 0x15F90, false, false ); // Est. time remaining:
+			g.AddLabel( 223, y, 0x481, timeRemaining.TotalSeconds.ToString( "F0" ) );
+			y += 16;
+		}
+
+		public virtual bool AllowsQuestItem( Item item, Type type )
+		{
+			return false;
+		}
+
+		public virtual bool IsCompleted()
+		{
+			return false;
+		}
+
+		public virtual void CheckComplete()
+		{
+			if ( IsCompleted() )
+			{
+				m_Instance.Player.PlaySound( 0x5B6 ); // public sound
+				m_Instance.CheckComplete();
+			}
+		}
+
+		public virtual void OnQuestAccepted()
+		{
+		}
+
+		public virtual void OnQuestCancelled()
+		{
+		}
+
+		public virtual void OnQuestCompleted()
+		{
+		}
+
+		public virtual bool OnBeforeClaimReward()
+		{
+			return true;
+		}
+
+		public virtual void OnClaimReward()
+		{
+		}
+
+		public virtual void OnAfterClaimReward()
+		{
+		}
+
+		public virtual void OnRewardClaimed()
+		{
+		}
+
+		public virtual void OnQuesterDeleted()
+		{
+		}
+
+		public virtual void OnPlayerDeath()
+		{
+		}
+
+		public virtual void OnExpire()
+		{
+		}
+
+		public enum DataType : byte
+		{
+			None,
+			EscortObjective,
+			KillObjective,
+			DeliverObjective
+		}
+
+		public virtual DataType ExtraDataType { get { return DataType.None; } }
+
+		public virtual void Serialize( GenericWriter writer )
+		{
+			// Version info is written in MLQuestPersistence.Serialize
+
+			if ( IsTimed )
+			{
+				writer.Write( true );
+				writer.WriteDeltaTime( m_EndTime );
+			}
+			else
+			{
+				writer.Write( false );
+			}
+
+			// For type checks on deserialization
+			// (This way quest objectives can be changed without breaking serialization)
+			writer.Write( (byte)ExtraDataType );
+		}
+
+		public static void Deserialize( GenericReader reader, int version, BaseObjectiveInstance objInstance )
+		{
+			if ( reader.ReadBool() )
+			{
+				DateTime endTime = reader.ReadDeltaTime();
+
+				if ( objInstance != null )
+					objInstance.EndTime = endTime;
+			}
+
+			DataType extraDataType = (DataType)reader.ReadByte();
+
+			switch ( extraDataType )
+			{
+				case DataType.EscortObjective:
+				{
+					bool completed = reader.ReadBool();
+
+					if ( objInstance is EscortObjectiveInstance )
+						( (EscortObjectiveInstance)objInstance ).HasCompleted = completed;
+
+					break;
+				}
+				case DataType.KillObjective:
+				{
+					int slain = reader.ReadInt();
+
+					if ( objInstance is KillObjectiveInstance )
+						( (KillObjectiveInstance)objInstance ).Slain = slain;
+
+					break;
+				}
+				case DataType.DeliverObjective:
+				{
+					bool completed = reader.ReadBool();
+
+					if ( objInstance is DeliverObjectiveInstance )
+						( (DeliverObjectiveInstance)objInstance ).HasCompleted = completed;
+
+					break;
+				}
+			}
+		}
+	}
+}