How To make him not get dismount

Hi ArteGordon was curious how would i make this script so no creature like the Hiyru he can dismount so i got this script that the hiyru can dismount the Master Of The Arts.
Would like to know what can i add so the Master Of The Arts cant get dismounted from his IceSteed heres the script.

CODE

using System;
using Server.Items;
using System.Collections; // needed for ArrayList
using System.Collections.Generic;

namespace Server.Mobiles
{
[CorpseName( "a crafting union leader corpse" )]
public class MasterOfTheArts : BaseCreature //make it use the creature files/settings
{
public static TimeSpan TalkDelay = TimeSpan.FromSeconds( 10.0 ); //the delay between talks is 10 seconds
public DateTime m_NextTalk;

public override int GetIdleSound()
{
return 573; //play carpentry sound
}

public override int GetDeathSound()
{
return 1060; //play death sound
}

public override int GetAttackSound()
{
return 42; // play blacksmith sound
}

public override int GetHurtSound()
{
if (this.Hits > 1000)
{
return 1076; //play hurt sound
}
else if (this.Hits > 500)
{
return 1078; //play hurt sound
}
else if (this.Hits > 100)
{
return 1081; //play hurt sound
}
else
{
return 1080; //play hurt sound
}
}

public override int GetAngerSound()
{
return 42; //play blacksmith sound
}

public override void OnMovement( Mobile m, Point3D oldLocation )
{
if ( DateTime.Now >= m_NextTalk && InRange( m, 4 ) && InLOS( m ) ) // check if it's time to talk & mobile in range & in los.
{
m_NextTalk = DateTime.Now + TalkDelay; // set next talk time
switch ( Utility.Random( 7 ))
{
case 0: Say("So you really think that crafting is important to ye."); //make it say ...
PlaySound(1066); //play giggle sound
break;
case 1: Say("So you really think you can beat me, I am very crafty you know.");
PlaySound(1071); //play huh sound
break;
case 2: Say("Only the wise can receive these scrolls of knowledge to excel.");
PlaySound(1055); //play clear throat sound
break; //
case 3: Say("I shall not give you these scrolls easily.");
PlaySound(1074); //play no!! sound
break;
case 4: Say("Leave me be, I am waiting for the Master of the Power. You are a pain in my side.");
PlaySound(1067); //play groan sound
break;
case 5: Say("I shall treat thee like I do with the others under me, Ha ha.");
PlaySound(1073); //play lough sound
break;
case 6: Say("Not only your might is a neccesity to wield these scrolls of knowledge, but your mind is also required from thee.");
PlaySound(1094); //play spit sound
break;
};
}
}

public override WeaponAbility GetWeaponAbility() // add it random special ability, bleed, mortal strike or armor ignore
{
int ability = Utility.Random(3);
if (ability == 1)
return WeaponAbility.MortalStrike;
else if (ability == 2)
return WeaponAbility.BleedAttack;
else
return WeaponAbility.ArmorIgnore;
}

//base( AIType.AI_Melee, FightMode.Closest, 10, 1, 0.175, 0.350 )
//The 10 is range perception, the 1 is fight range, 0.1 is active speed, 0.4 is passive speed. set the 10 to like 5 and see what happens.
/*private int i_PsCount;
public int PsCount{ get{ return i_PsCount; } set { i_PsCount = value; InvalidateProperties(); } }
private bool i_ChampionSpawn;
public bool ChampionSpawn{ get{ return i_ChampionSpawn; } set { i_ChampionSpawn = value; InvalidateProperties(); } }

[Constructable]
public MasterOfTheArts() : this ( false )
{
}*/

[Constructable]
public MasterOfTheArts() : base( AIType.AI_Melee, FightMode.Closest, 10, 1, 0.2, 0.4 )
{
Name = "a master of the arts"; //the name players will see
Body = 185; //how it look like in game
BaseSoundID = 42; //what sound he makes (I still have problems with sound :(

//ChampionSpawn = i_ChampionSpawn; //set if it spawn with champ spawn or normal spawn

SetStr( 401, 420 ); //set stats
SetDex( 81, 90 );
SetInt( 201, 220 );

SetHits( 1500, 1700 ); //set hp

SetDamage( 20, 28 ); //set how much damage ~

SetDamageType( ResistanceType.Physical, 50 ); //which damage type it does
SetDamageType( ResistanceType.Poison, 50 );

SetResistance( ResistanceType.Physical, 60, 80 ); //what resists it have
SetResistance( ResistanceType.Fire, 40, 50 );
SetResistance( ResistanceType.Cold, 55, 50 );
SetResistance( ResistanceType.Poison, 48, 50 );
SetResistance( ResistanceType.Energy, 55, 60 );

SetSkill( SkillName.Anatomy, 120.0 );
SetSkill( SkillName.Tactics, 120.0 );
SetSkill( SkillName.Meditation, 120.0 );
SetSkill( SkillName.Swords, 120.0 );
SetSkill( SkillName.Wrestling, 120.0 );
SetSkill( SkillName.Parry, 120.0 );
SetSkill( SkillName.MagicResist, 120.0 );

Fame = 30000; //its fame/karma
Karma = -30000;

VirtualArmor = 50;
ActiveSpeed /= Paragon.SpeedBuff;
PassiveSpeed /= Paragon.SpeedBuff;
RangePerception = 20;

PlateChest chest = new PlateChest(); //add its armor and set its hue and not movable so it won't be on loot
chest.Hue = 503;
chest.Movable = false;
AddItem( chest );

PlateArms arms = new PlateArms();
arms.Hue = 503;
arms.Movable = false;
AddItem( arms );

PlateGloves gloves = new PlateGloves();
gloves.Hue = 503;
gloves.Movable = false;
AddItem( gloves );

PlateGorget gorget = new PlateGorget();
gorget.Hue = 503;
gorget.Movable = false;
AddItem( gorget );

PlateLegs legs = new PlateLegs();
legs.Hue = 503;
legs.Movable = false;
AddItem( legs );

AxeOfTheHeavens weapon = new AxeOfTheHeavens(); //add its weapon and set its hue and not movable so it won't be on loot
//weapon.Name = "Crafting Union Leader's Hammer";
weapon.Hue = 503;
weapon.Movable = false;
AddItem( weapon );

FurBoots boots = new FurBoots(); //add its boots and set its hue and not movable so it won't be on loot
boots.Hue = 503;
boots.Movable = false;
AddItem( boots );

Item hair = new Item( 8251 ); //add its hair and set its hue and not movable so it won't be on loot
hair.Hue = 503;
hair.Layer = Layer.Hair;
hair.Movable = false;
AddItem( hair );

AddItem( new Tokens( 500, 1000 ));
//if ( Utility.Random(25) == 1 )
//AddItem( new PersonalStatueDeed() );

new IceSteed().Rider = this; //make it ride on mule
}

public void GiveCraftPowerScroll() //Generate power scroll routine and add to pack
{
List<Mobile> toGive = new List<Mobile>(); //no idea :(

List<AggressorInfo> list = Aggressors; //I think it add list players that attacked it
for ( int i = 0; i < list.Count; ++i )
{
AggressorInfo info = list[i];

if ( info.Attacker.Player && info.Attacker.Alive && (DateTime.Now - info.LastCombatTime) < TimeSpan.FromSeconds( 30.0 ) && !toGive.Contains( info.Attacker ) )
toGive.Add( info.Attacker );
}

list = Aggressed; //I think it add list of players it attacked
for ( int i = 0; i < list.Count; ++i )
{
AggressorInfo info = list[i];

if ( info.Defender.Player && info.Defender.Alive && (DateTime.Now - info.LastCombatTime) < TimeSpan.FromSeconds( 30.0 ) && !toGive.Contains( info.Defender ) )
toGive.Add( info.Defender );
}
if ( toGive.Count == 0 )//if nobody attacked it and it didn't attack anybody then break operation and no ps MUAH
return;

// Randomize //absolutly no idea
for ( int i = 0; i < toGive.Count; ++i )
{
int rand = Utility.Random( toGive.Count );
Mobile hold = toGive[i];
toGive[i] = toGive[rand];
toGive[rand] = hold;
}

//PsCount = ChampionSpawn ? 5 : 2; //set how many ps to give if it spawned using champ spawn or normal spawn
for ( int i = 0; i < 1; ++i ) //set to give 1 ps change the "< 1" to anything you want
{
Mobile m = (Mobile)toGive[i % toGive.Count];
int level;
double random = Utility.RandomDouble();
if ( 0.2 >= random ) // select the level of the ps
level = 120;
else if ( 0.55 >= random )
level = 115;
else
level = 110;

//if ( Daat99OWLTR.Ops[5].Setting )
//m.AddToBackpack( new ResourceRecipe() );

switch ( Utility.Random( 13 )) // select which skill to use in the ps
{
case 0: m.AddToBackpack( new PowerScroll( SkillName.Blacksmith, level ) ); break; // give blacksmith ps acording to the ps level we selected before
case 1: m.AddToBackpack( new PowerScroll( SkillName.Tailoring, level ) ); break;
case 2: m.AddToBackpack( new PowerScroll( SkillName.Tinkering, level ) ); break;
case 3: m.AddToBackpack( new PowerScroll( SkillName.Mining, level ) ); break;
case 4: m.AddToBackpack( new PowerScroll( SkillName.Carpentry, level ) ); break;
case 5: m.AddToBackpack( new PowerScroll( SkillName.Alchemy, level ) ); break;
case 6: m.AddToBackpack( new PowerScroll( SkillName.Fletching, level ) ); break;
case 7: m.AddToBackpack( new PowerScroll( SkillName.Inscribe, level ) ); break;
case 8: m.AddToBackpack( new PowerScroll( SkillName.Cooking, level ) ); break;
case 9: m.AddToBackpack( new PowerScroll( SkillName.Cartography, level ) ); break;
case 10: m.AddToBackpack( new PowerScroll( SkillName.Lumberjacking, level ) ); break;
case 11: m.AddToBackpack( new PowerScroll( SkillName.Lockpicking, level ) ); break;
case 12: m.AddToBackpack( new PowerScroll( SkillName.Fishing, level ) ); break;
}
m.SendLocalizedMessage( 1049524 ); // You have received a scroll of power!
}
}

public override bool OnBeforeDeath( ) //what happens before it dies
{
IMount mount = this.Mount;

if ( mount != null )
{
mount.Rider = null;

if (mount is Mobile) ((Mobile)mount).Delete();
}

GiveCraftPowerScroll(); //call the generate ps routine

switch (Utility.Random(15))
{

case 0: PackItem( new RunicSewingKit( CraftResource.SpinedLeather, 25 ) ); break;
case 1: PackItem( new RunicSewingKit( CraftResource.HornedLeather, 25 ) ); break;
case 2: PackItem( new RunicSewingKit( CraftResource.BarbedLeather, 25 ) ); break;

}
switch (Utility.Random(8))
{

case 0: PackItem( new DullCopperOre( 25 ) ); break;
case 1: PackItem( new ShadowIronOre( 25 ) ); break;
case 2: PackItem( new CopperOre( 25 ) ); break;
case 3: PackItem( new BronzeOre( 25 ) ); break;
case 4: PackItem( new GoldOre( 25 ) ); break;
case 5: PackItem( new AgapiteOre( 25 ) ); break;
case 6: PackItem( new VeriteOre( 25 ) ); break;
case 7: PackItem( new ValoriteOre( 25 ) ); break;
}

switch ( Utility.Random(20))
{

case 0: PackItem( new RunicHammer( CraftResource.DullCopper, 25 ) ); break;
case 1: PackItem( new RunicHammer( CraftResource.ShadowIron, 25 ) ); break;
case 2: PackItem( new RunicHammer( CraftResource.Copper, 25 ) ); break;
case 3: PackItem( new RunicHammer( CraftResource.Bronze, 25 ) ); break;
case 4: PackItem( new RunicHammer( CraftResource.Gold, 25 ) ); break;
case 5: PackItem( new RunicHammer( CraftResource.Agapite, 25 ) ); break;
case 6: PackItem( new RunicHammer( CraftResource.Verite, 25 ) ); break;
case 7: PackItem( new RunicHammer( CraftResource.Valorite, 25 ) ); break;

//case 9: PackItem( new RunicSewingKit( CraftResource.RegularLeather, 10 ) ); break; // normal leather runic sewing kit with 10 charges
//case 10: PackItem( new RunicSewingKit( CraftResource.SpinedLeather, 10 ) ); break;
//case 11: PackItem( new RunicSewingKit( CraftResource.HornedLeather, 10 ) ); break;
//case 12: PackItem( new RunicSewingKit( CraftResource.BarbedLeather, 10 ) ); break;

}
return true;
}

public override bool BardImmune{ get{ return true; } } //make it bardimmune: unpeaceable\unprovokable\undiscorded
public override bool AlwaysMurderer{ get{ return true; } } //make the npc red
public override bool Unprovokable{ get{ return true; } }
public override bool CanRummageCorpses{ get{ return true; } }

public override bool AlwaysAttackable{ get{ return true; } }
public override bool Uncalmable{ get{ return true; } }
public override Poison PoisonImmune{ get{ return Poison.Lethal; } }
public override void GenerateLoot() //add normal loot
{
AddLoot( LootPack.SuperBoss, 2 ); // set the loot type to ultra rich
}

public MasterOfTheArts( Serial serial ) : base( serial ) // no idea what this does
{
}

public override void Serialize( GenericWriter writer ) // this save the info on the mob so it won't be deleted all the time
{
base.Serialize( writer );
writer.Write( (int) 0 ); // version
}

public override void Deserialize( GenericReader reader ) // this load the info on the mob so it won't be deleted all the time
{
base.Deserialize( reader );
int version = reader.ReadInt();
}
}
}