servuo/Scripts/Abilities/ShadowStrike.cs

namespace Server.Items
{
    /// <summary>
    /// This powerful ability requires secondary skills to activate.
    /// Successful use of Shadowstrike deals extra damage to the target — and renders the attacker invisible!
    /// Only those who are adept at the art of stealth will be able to use this ability.
    /// </summary>
    public class ShadowStrike : WeaponAbility
    {
        public override int BaseMana => 20;

        public override double DamageScalar => 1.25;

        public override bool RequiresSecondarySkill(Mobile from)
        {
            return false;
        }

        public override bool CheckSkills(Mobile from)
        {
            if (!base.CheckSkills(from))
                return false;

            Skill skill = from.Skills[SkillName.Stealth];

            if (skill != null && skill.Value >= 80.0)
                return true;

            from.SendLocalizedMessage(1060183); // You lack the required stealth to perform that attack

            return false;
        }

        public override void OnHit(Mobile attacker, Mobile defender, int damage)
        {
            if (!Validate(attacker) || !CheckMana(attacker, true))
                return;

            ClearCurrentAbility(attacker);

            attacker.SendLocalizedMessage(1060078); // You strike and hide in the shadows!
            defender.SendLocalizedMessage(1060079); // You are dazed by the attack and your attacker vanishes!

            Effects.SendLocationParticles(EffectItem.Create(attacker.Location, attacker.Map, EffectItem.DefaultDuration), 0x376A, 8, 12, 9943);
            attacker.PlaySound(0x482);

            defender.FixedEffect(0x37BE, 20, 25);

            attacker.Combatant = null;
            attacker.Warmode = false;
            attacker.Hidden = true;
        }
    }
}