C# Creature.GetRightCritChance方法代码示例

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			if (target.IsNotReadyToBeHit)
				return CombatSkillResult.Okay;

			var targetPos = target.GetPosition();
			var attackerPos = attacker.GetPosition();

			// Check range
			//if (!attackerPos.InRange(targetPos, attacker.RightHand.OptionInfo.EffectiveRange + 100))
			//	return CombatSkillResult.OutOfRange;

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, skill.Info.Id, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Hit by chance
			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get();
			if (rnd.NextDouble() * 100 < chance)
			{
				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result);
				tAction.Stun = TargetStun;
				cap.Add(tAction);

				// Damage
				var damage = attacker.GetRndRangedDamage();

				// More damage with fire arrow
				if (attacker.Temp.FireArrow)
					damage *= FireBonus;

				// Critical Hit
				var critShieldReduction = (target.LeftHand != null ? target.LeftHand.Data.DefenseBonusCrit : 0);
				var critChance = attacker.GetRightCritChance(target.Protection + critShieldReduction);
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				var maxDamage = damage; //Damage without Defense and Protection
				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage, true);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction, maxDamage);

				// Deal with it!
				if (damage > 0)
					target.TakeDamage(tAction.Damage = damage, attacker);

				// Aggro
				target.Aggro(attacker);

				// Death/Knockback
				if (target.IsDead)
				{
					tAction.Set(TargetOptions.FinishingKnockDown);
					attacker.Shove(target, KnockBackDistance);
				}
				else
				{
					// Insta-recover in knock down
					// TODO: Tied to stability?
					if (target.IsKnockedDown)
					{
						tAction.Stun = 0;
					}
					// Knock down if hit repeatedly
					else if (target.Stability < 30)
					{
						tAction.Set(TargetOptions.KnockDown);
					}
					// Normal stability reduction
					else
					{
						target.Stability -= StabilityReduction;
						if (target.IsUnstable)
						{
							tAction.Set(TargetOptions.KnockBack);
							attacker.Shove(target, KnockBackDistance);
						}
					}
//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			var targetPos = target.GetPosition();
			var attackerPos = attacker.GetPosition();

			var actionType = (attacker.IsElf ? CombatActionPackType.ChainRangeAttack : CombatActionPackType.NormalAttack);
			var attackerStun = (short)(actionType == CombatActionPackType.ChainRangeAttack ? AttackerStunElf : AttackerStun);

			// "Cancels" the skill
			// 800 = old load time? == aAction.Stun? Varies? Doesn't seem to be a stun.
			Send.SkillUse(attacker, skill.Info.Id, attackerStun, 1);

			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get().NextDouble() * 100;
			var successfulHit = (rnd < chance);

			var maxHits = (actionType == CombatActionPackType.ChainRangeAttack && successfulHit ? 2 : 1);
			var prevId = 0;

			for (byte i = 1; i <= maxHits; ++i)
			{
				target.StopMove();

				// Actions
				var cap = new CombatActionPack(attacker, skill.Info.Id);
				cap.Hit = i;
				cap.Type = actionType;
				cap.PrevId = prevId;
				prevId = cap.Id;

				var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, skill.Info.Id, targetEntityId);
				aAction.Set(AttackerOptions.Result);
				aAction.Stun = attackerStun;
				cap.Add(aAction);

				// Target action if hit
				if (successfulHit)
				{
					var targetSkillId = target.Skills.ActiveSkill != null ? target.Skills.ActiveSkill.Info.Id : SkillId.CombatMastery;

					var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, targetSkillId);
					tAction.Set(TargetOptions.Result);
					tAction.AttackerSkillId = skill.Info.Id;
					tAction.Stun = (short)(actionType == CombatActionPackType.ChainRangeAttack ? TargetStunElf : TargetStun);
					if (actionType == CombatActionPackType.ChainRangeAttack)
						tAction.EffectFlags = 0x20;
					cap.Add(tAction);

					// Damage
					var damage = attacker.GetRndRangedDamage();

					// More damage with fire arrow
					if (attacker.Temp.FireArrow)
						damage *= FireBonus;

					// Critical Hit
					var critChance = attacker.GetRightCritChance(target.Protection);
					CriticalHit.Handle(attacker, critChance, ref damage, tAction);

					// Subtract target def/prot
					SkillHelper.HandleDefenseProtection(target, ref damage);

					// Defense
					Defense.Handle(aAction, tAction, ref damage);

					// Mana Shield
					ManaShield.Handle(target, ref damage, tAction);

					// Deal with it!
					if (damage > 0)
						target.TakeDamage(tAction.Damage = damage, attacker);

					// Aggro
					target.Aggro(attacker);

					// Death/Knockback
					if (target.IsDead)
					{
						tAction.Set(TargetOptions.FinishingKnockDown);
						attacker.Shove(target, KnockBackDistance);
						maxHits = 1;
					}
					else
					{
						// Insta-recover in knock down
						// TODO: Tied to stability?
						if (target.IsKnockedDown)
						{
//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			// "Cancels" the skill
			// 800 = old load time? == aAction.Stun? Varies? Doesn't seem to be a stun.
			Send.SkillUse(attacker, skill.Info.Id, AttackerStun, 1);

			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get().NextDouble() * 100;
			var successfulHit = (rnd < chance);

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Target action if hit
			if (successfulHit)
			{
				target.StopMove();

				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result);
				tAction.Stun = TargetStun;

				cap.Add(tAction);

				// Damage
				var damage = attacker.GetRndRangedDamage() * (skill.RankData.Var1 / 100f);

				// Elementals
				damage *= attacker.CalculateElementalDamageMultiplier(target);

				// More damage with fire arrow
				if (attacker.Temp.FireArrow)
					damage *= FireBonus;

				// Critical Hit
				var critChance = attacker.GetRightCritChance(target.Protection);
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction);

				// Natural Shield
				var delayReduction = NaturalShield.Handle(attacker, target, ref damage, tAction);

				// Deal with it!
				if (damage > 0)
				{
					target.TakeDamage(tAction.Damage = damage, attacker);
					SkillHelper.HandleInjury(attacker, target, damage);
				}

				// Aggro
				target.Aggro(attacker);

				// Knock down on deadly
				if (target.Conditions.Has(ConditionsA.Deadly))
					tAction.Set(TargetOptions.KnockDown);

				// Death/Knockback
				if (target.IsDead)
					tAction.Set(TargetOptions.FinishingKnockDown);

				// Knock Back
				if (tAction.IsKnockBack)
					attacker.Shove(target, KnockBackDistance);

				// Reduce stun, based on ping
				if (delayReduction > 0)
					tAction.Stun = (short)Math.Max(0, tAction.Stun - (tAction.Stun / 100 * delayReduction));

				// TODO: "Weakened" state (G12S2 gfSupportShotRenewal)
			}

			// Reduce arrows
			if (attacker.Magazine != null && !ChannelServer.Instance.Conf.World.InfiniteArrows && !attacker.Magazine.HasTag("/unlimited_arrow/"))
				attacker.Inventory.Decrement(attacker.Magazine);

//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			// "Cancels" the skill
			// 800 = old load time? == aAction.Stun? Varies? Doesn't seem to be a stun.
			Send.SkillUse(attacker, skill.Info.Id, AttackerStun, 1);

			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get().NextDouble() * 100;
			var successfulHit = (rnd < chance);

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Target action if hit
			if (successfulHit)
			{
				target.StopMove();

				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result);
				tAction.Stun = TargetStun;

				cap.Add(tAction);

				// Damage
				// Formula unofficial, but it kinda matches what you would
				// expect from the skill, and what players believed the damage
				// to be, back in G2.
				// bonus = (100 - (6 - stacks) * 5 + rank, +var2 on last shot
				// I'm using rank instead of Var1, which goes from 1-15 in
				// AR2, so AR1 gets a little bonus as well, as AR1's Var1 and
				// 2 are 0.
				// With this formula, the bonus range (1st shot rF vs 5th shot
				// r1) is 76~110% for AR1, and 76~140% for AR2.
				var bonus = 100f - (6 - skill.Stacks) * 5f + (byte)skill.Info.Rank;
				if (skill.Stacks == 1)
					bonus += skill.RankData.Var2;

				var damage = attacker.GetRndRangedDamage() * (bonus / 100f);

				// Elementals
				damage *= attacker.CalculateElementalDamageMultiplier(target);

				// More damage with fire arrow
				if (attacker.Temp.FireArrow)
					damage *= FireBonus;

				// Critical Hit
				var critChance = attacker.GetRightCritChance(target.Protection);
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction);

				// Natural Shield
				var delayReduction = NaturalShield.Handle(attacker, target, ref damage, tAction);

				// Deal with it!
				if (damage > 0)
				{
					target.TakeDamage(tAction.Damage = damage, attacker);
					SkillHelper.HandleInjury(attacker, target, damage);
				}

				// Aggro
				target.Aggro(attacker);

				// Knock down on deadly
				if (target.Conditions.Has(ConditionsA.Deadly))
					tAction.Set(TargetOptions.KnockDown);

				// Death/Knockback
				if (target.IsDead)
				{
					tAction.Set(TargetOptions.FinishingKnockDown);
				}
				else
//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			var targetPos = target.GetPosition();
			var attackerPos = attacker.GetPosition();

			var actionType = (attacker.IsElf ? CombatActionPackType.ChainRangeAttack : CombatActionPackType.NormalAttack);
			var attackerStun = (short)(actionType == CombatActionPackType.ChainRangeAttack ? AttackerStunElf : AttackerStun);

			// "Cancels" the skill
			// 800 = old load time? == aAction.Stun? Varies? Doesn't seem to be a stun.
			Send.SkillUse(attacker, skill.Info.Id, attackerStun, 1);

			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get().NextDouble() * 100;
			var successfulHit = (rnd < chance);

			var maxHits = (actionType == CombatActionPackType.ChainRangeAttack && successfulHit ? 2 : 1);
			var prevId = 0;

			for (byte i = 1; i <= maxHits; ++i)
			{
				target.StopMove();

				// Actions
				var cap = new CombatActionPack(attacker, skill.Info.Id);
				cap.Hit = i;
				cap.Type = actionType;
				cap.PrevId = prevId;
				prevId = cap.Id;

				var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, targetEntityId);
				aAction.Set(AttackerOptions.Result);
				aAction.Stun = attackerStun;
				cap.Add(aAction);

				// Target action if hit
				if (successfulHit)
				{
					var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
					tAction.Set(TargetOptions.Result);
					tAction.Stun = (short)(actionType == CombatActionPackType.ChainRangeAttack ? TargetStunElf : TargetStun);
					if (actionType == CombatActionPackType.ChainRangeAttack)
						tAction.EffectFlags = EffectFlags.Unknown;

					cap.Add(tAction);

					// Damage
					var damage = attacker.GetRndRangedDamage();

					// Elementals
					damage *= attacker.CalculateElementalDamageMultiplier(target);

					// More damage with fire arrow
					// XXX: Does this affect the element?
					if (attacker.Temp.FireArrow)
						damage *= FireBonus;

					// Critical Hit
					var critChance = attacker.GetRightCritChance(target.Protection);
					CriticalHit.Handle(attacker, critChance, ref damage, tAction);

					// Subtract target def/prot
					SkillHelper.HandleDefenseProtection(target, ref damage);

					// Defense
					Defense.Handle(aAction, tAction, ref damage);

					// Mana Shield
					ManaShield.Handle(target, ref damage, tAction);

					// Natural Shield
					var delayReduction = NaturalShield.Handle(attacker, target, ref damage, tAction);

					// Deal with it!
					if (damage > 0)
					{
						target.TakeDamage(tAction.Damage = damage, attacker);
						SkillHelper.HandleInjury(attacker, target, damage);
					}

					// Knock down on deadly
					if (target.Conditions.Has(ConditionsA.Deadly))
					{
						tAction.Set(TargetOptions.KnockDown);
						tAction.Stun = (short)(actionType == CombatActionPackType.ChainRangeAttack ? TargetStunElf : TargetStun);
					}

					// Aggro
//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var mainTarget = attacker.Region.GetCreature(targetEntityId);
			if (mainTarget == null)
				return CombatSkillResult.InvalidTarget;

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Hit by chance
			var chance = attacker.AimMeter.GetAimChance(mainTarget);
			var rnd = RandomProvider.Get();
			if (rnd.NextDouble() * 100 < chance)
			{
				aAction.Set(AttackerOptions.KnockBackHit2);

				// Get targets, incl. splash.
				// Splash happens from r5 onwards, but we'll base it on Var4,
				// which is the splash damage and first != 0 on r5.
				var targets = new HashSet<Creature>() { mainTarget };
				if (skill.RankData.Var4 != 0)
				{
					var targetPosition = mainTarget.GetPosition();
					var direction = attacker.GetPosition().GetDirection(targetPosition);
					targets.UnionWith(attacker.GetTargetableCreaturesInCone(targetPosition, direction, skill.RankData.Var5, skill.RankData.Var6));
				}

				// Damage
				var mainDamage = this.GetDamage(attacker, skill);

				foreach (var target in targets)
				{
					var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
					tAction.Set(TargetOptions.Result | TargetOptions.CleanHit);
					tAction.Stun = TargetStun;
					cap.Add(tAction);

					// Damage
					var damage = mainDamage;

					// Elementals
					damage *= attacker.CalculateElementalDamageMultiplier(target);

					// More damage with fire arrow
					// XXX: Does this affect the element?
					if (attacker.Temp.FireArrow)
						damage *= FireBonus;

					// Splash modifier
					if (target != mainTarget)
						damage *= (skill.RankData.Var4 / 100f);

					// Critical Hit
					var critChance = attacker.GetRightCritChance(target.Protection);
					CriticalHit.Handle(attacker, critChance, ref damage, tAction);

					// Subtract target def/prot
					SkillHelper.HandleDefenseProtection(target, ref damage);

					// Conditions
					SkillHelper.HandleConditions(attacker, target, ref damage);

					// Mana Shield
					ManaShield.Handle(target, ref damage, tAction);

					// Natural Shield
					// Ignore delay reduction, as knock downs shouldn't be shortened
					NaturalShield.Handle(attacker, target, ref damage, tAction);

					// Deal with it!
					if (damage > 0)
					{
						target.TakeDamage(tAction.Damage = damage, attacker);
						SkillHelper.HandleInjury(attacker, target, damage);
					}

					// Knock down
					// If target is using a shield and defense, don't KD.
					var targetLeftHand = target.LeftHand;
					if (tAction.SkillId != SkillId.Defense || targetLeftHand == null || !targetLeftHand.IsShield)
					{
						// TODO: We have to calculate knockback distance right
						attacker.Shove(target, KnockBackDistance);
						tAction.Set(TargetOptions.KnockDownFinish);
					}

					// Aggro
//.........这里部分代码省略.........

        /// <summary>
        /// Handles attack.
        /// </summary>
        /// <param name="attacker">The creature attacking.</param>
        /// <param name="skill">The skill being used.</param>
        /// <param name="targetEntityId">The entity id of the target.</param>
        /// <returns></returns>
        public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
        {
            if (attacker.IsStunned)
                return CombatSkillResult.Okay;

            var mainTarget = attacker.Region.GetCreature(targetEntityId);
            if (mainTarget == null)
                return CombatSkillResult.Okay;

            if (!attacker.GetPosition().InRange(mainTarget.GetPosition(), attacker.AttackRangeFor(mainTarget)))
                return CombatSkillResult.OutOfRange;

            attacker.StopMove();

            // Get targets, incl. splash.
            var targets = new HashSet<Creature>() { mainTarget };
            targets.UnionWith(attacker.GetTargetableCreaturesInCone(mainTarget.GetPosition(), attacker.GetTotalSplashRadius(), attacker.GetTotalSplashAngle()));

            // Counter
            if (Counterattack.Handle(targets, attacker))
                return CombatSkillResult.Okay;

            var rightWeapon = attacker.Inventory.RightHand;
            var leftWeapon = attacker.Inventory.LeftHand;
            var magazine = attacker.Inventory.Magazine;
            var maxHits = (byte)(attacker.IsDualWielding ? 2 : 1);
            int prevId = 0;

            for (byte i = 1; i <= maxHits; ++i)
            {
                var weapon = (i == 1 ? rightWeapon : leftWeapon);
                var weaponIsKnuckle = (weapon != null && weapon.Data.HasTag("/knuckle/"));

                var aAction = new AttackerAction(CombatActionType.Attacker, attacker, targetEntityId);
                aAction.Set(AttackerOptions.Result);

                if (attacker.IsDualWielding)
                {
                    aAction.Set(AttackerOptions.DualWield);
                    aAction.WeaponParameterType = (byte)(i == 1 ? 2 : 1);
                }

                var cap = new CombatActionPack(attacker, skill.Info.Id, aAction);
                cap.Hit = i;
                cap.Type = (attacker.IsDualWielding ? CombatActionPackType.TwinSwordAttack : CombatActionPackType.NormalAttack);
                cap.PrevId = prevId;
                prevId = cap.Id;

                var mainDamage = (i == 1 ? attacker.GetRndRightHandDamage() : attacker.GetRndLeftHandDamage());

                foreach (var target in targets)
                {
                    if (target.IsDead)
                        continue;

                    target.StopMove();

                    var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
                    tAction.Set(TargetOptions.Result);
                    cap.Add(tAction);

                    // Base damage
                    var damage = mainDamage;

                    // Elementals
                    damage *= attacker.CalculateElementalDamageMultiplier(target);

                    // Splash modifier
                    if (target != mainTarget)
                        damage *= attacker.GetSplashDamage(weapon);

                    // Critical Hit
                    var critChance = (i == 1 ? attacker.GetRightCritChance(target.Protection) : attacker.GetLeftCritChance(target.Protection));
                    CriticalHit.Handle(attacker, critChance, ref damage, tAction);

                    // Subtract target def/prot
                    SkillHelper.HandleDefenseProtection(target, ref damage);

                    // Defense
                    Defense.Handle(aAction, tAction, ref damage);

                    // Mana Shield
                    ManaShield.Handle(target, ref damage, tAction);

                    // Heavy Stander
                    // Can only happen on the first hit
                    var pinged = (cap.Hit == 1 && HeavyStander.Handle(attacker, target, ref damage, tAction));

                    // Deal with it!
                    if (damage > 0)
                    {
                        target.TakeDamage(tAction.Damage = damage, attacker);
                        SkillHelper.HandleInjury(attacker, target, damage);
//.........这里部分代码省略.........

		/// <summary>
		/// Handles attack.
		/// </summary>
		/// <param name="attacker">The creature attacking.</param>
		/// <param name="skill">The skill being used.</param>
		/// <param name="targetEntityId">The entity id of the target.</param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			if (attacker.IsStunned)
				return CombatSkillResult.Okay;

			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.Okay;

			if (!attacker.GetPosition().InRange(target.GetPosition(), attacker.AttackRangeFor(target)))
				return CombatSkillResult.OutOfRange;

			attacker.StopMove();
			var targetPosition = target.StopMove();

			// Counter
			if (Counterattack.Handle(target, attacker))
				return CombatSkillResult.Okay;

			var rightWeapon = attacker.Inventory.RightHand;
			var leftWeapon = attacker.Inventory.LeftHand;
			var magazine = attacker.Inventory.Magazine;
			var dualWield = (rightWeapon != null && leftWeapon != null && leftWeapon.Data.WeaponType != 0);
			var maxHits = (byte)(dualWield ? 2 : 1);
			int prevId = 0;

			for (byte i = 1; i <= maxHits; ++i)
			{
				var weapon = (i == 1 ? rightWeapon : leftWeapon);
				var weaponIsKnuckle = (weapon != null && weapon.Data.HasTag("/knuckle/"));

				var aAction = new AttackerAction(CombatActionType.Attacker, attacker, skill.Info.Id, targetEntityId);
				aAction.Set(AttackerOptions.Result);

				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result);

				var cap = new CombatActionPack(attacker, skill.Info.Id, aAction, tAction);
				cap.Hit = i;
				cap.Type = (dualWield ? CombatActionPackType.TwinSwordAttack : CombatActionPackType.NormalAttack);
				cap.PrevId = prevId;
				prevId = cap.Id;

				// Default attacker options
				aAction.Set(AttackerOptions.Result);
				if (dualWield)
				{
					aAction.Set(AttackerOptions.DualWield);
					aAction.WeaponParameterType = (byte)(i == 1 ? 2 : 1);
				}

				// Base damage
				var damage = (i == 1 ? attacker.GetRndRightHandDamage() : attacker.GetRndLeftHandDamage());

				// Critical Hit
				var critChance = (i == 1 ? attacker.GetRightCritChance(target.Protection) : attacker.GetLeftCritChance(target.Protection));
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction);

				// Deal with it!
				if (damage > 0)
					target.TakeDamage(tAction.Damage = damage, attacker);

				// Aggro
				target.Aggro(attacker);

				// Evaluate caused damage
				if (!target.IsDead)
				{
					if (tAction.SkillId != SkillId.Defense)
					{
						target.Stability -= this.GetStabilityReduction(attacker, weapon) / maxHits;

						// React normal for CombatMastery, knock down if 
						// FH and not dual wield, don't knock at all if dual.
						if (skill.Info.Id != SkillId.FinalHit)
						{
							// Originally we thought you knock enemies back, unless it's a critical
							// hit, but apparently you knock *down* under normal circumstances.
							// More research to be done.
							if (target.IsUnstable && target.Is(RaceStands.KnockBackable))
								//tAction.Set(tAction.Has(TargetOptions.Critical) ? TargetOptions.KnockDown : TargetOptions.KnockBack);
								tAction.Set(TargetOptions.KnockDown);
						}
						else if (!dualWield && !weaponIsKnuckle)
//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, skill.Info.Id, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Hit by chance
			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get();
			if (rnd.NextDouble() * 100 < chance)
			{
				target.StopMove();

				aAction.Set(AttackerOptions.KnockBackHit2);

				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result | TargetOptions.CleanHit);
				tAction.Stun = TargetStun;
				cap.Add(tAction);

				// TODO: Splash damage

				// Damage
				var damage = this.GetDamage(attacker, skill);

				// More damage with fire arrow
				if (attacker.Temp.FireArrow)
					damage *= FireBonus;

				// Critical Hit
				var critChance = attacker.GetRightCritChance(target.Protection);
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction);

				// Deal with it!
				if (damage > 0)
					target.TakeDamage(tAction.Damage = damage, attacker);

				// TODO: We have to calculate knockback distance right
				// TODO: Target with Defense and shield shouldn't be knocked back
				attacker.Shove(target, KnockBackDistance);

				// Aggro
				target.Aggro(attacker);

				tAction.Set(TargetOptions.KnockDownFinish);

				if (target.IsDead)
				{
					aAction.Set(AttackerOptions.KnockBackHit1);
					tAction.Set(TargetOptions.Finished);
				}
			}
			else
			{
				aAction.Set(AttackerOptions.Missed);
			}

			// Reduce arrows
			if (attacker.Magazine != null && !ChannelServer.Instance.Conf.World.InfiniteArrows)
				attacker.Inventory.Decrement(attacker.Magazine);

			// Disable fire arrow effect
			if (attacker.Temp.FireArrow)
				Send.Effect(attacker, Effect.FireArrow, false);

			// "Cancels" the skill
			// 800 = old load time? == aAction.Stun? Varies? Doesn't seem to be a stun.
			Send.SkillUse(attacker, skill.Info.Id, 800, 1);

			cap.Handle();

			return CombatSkillResult.Okay;
		}

//.........这里部分代码省略.........
					tAction.Options |= TargetOptions.Result;

				}
				else
				{
					aAction = new AttackerAction(CombatActionType.Hit, attacker, skill.Info.Id, targetEntityId);
					tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, target.Skills.IsReady(SkillId.FinalHit) ? SkillId.FinalHit : SkillId.CombatMastery);
					aAction.Options |= AttackerOptions.Result;
					tAction.Options |= TargetOptions.Result;
				}

				attacker.InterceptingSkillId = SkillId.None;

				var cap = new CombatActionPack(attacker, skill.Info.Id, tAction, aAction);
				cap.Hit = i;
				cap.MaxHits = maxHits;
				cap.PrevId = prevId;
				prevId = cap.Id;

				// Default attacker options
				aAction.Set(AttackerOptions.Result);
				if (dualWield)
					aAction.Set(AttackerOptions.DualWield);

				// Base damage
				var damage = (i == 1 ? attacker.GetRndRightHandDamage() : attacker.GetRndLeftHandDamage());
				if (lowStamina)
				{
					damage = attacker.GetRndBareHandDamage();
				}

				// Critical Hit
				var critShieldReduction = (target.LeftHand != null ? target.LeftHand.Data.DefenseBonusCrit : 0);
				var critChance = (i == 1 ? attacker.GetRightCritChance(target.Protection + critShieldReduction) : attacker.GetLeftCritChance(target.Protection + critShieldReduction));
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				var maxDamage = damage; //Damage without Defense and Protection
										// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				var tActionOldType = tAction.Type;
				Defense.Handle(aAction, tAction, ref damage);
				if (i == 1 && tAction.Type == CombatActionType.Defended)
				{
					defenseStun = tAction.Stun;
				}


				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction, maxDamage);

				// Deal with it!
				if (damage > 0)
					target.TakeDamage(tAction.Damage = damage, attacker);

				if (tAction.Type == CombatActionType.Defended && target.Life <= 0)
				{
					tAction.Type = tActionOldType;
				}

				// Aggro
				target.Aggro(attacker);

				// Evaluate caused damage
				if (!target.IsDead)

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Hit by chance
			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get();
			if (rnd.NextDouble() * 100 < chance)
			{
				target.StopMove();

				aAction.Set(AttackerOptions.KnockBackHit2);

				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result | TargetOptions.CleanHit);
				tAction.Stun = TargetStun;
				cap.Add(tAction);

				// TODO: Splash damage

				// Damage
				var damage = this.GetDamage(attacker, skill);

				// Elementals
				damage *= attacker.CalculateElementalDamageMultiplier(target);

				// More damage with fire arrow
				// XXX: Does this affect the element?
				if (attacker.Temp.FireArrow)
					damage *= FireBonus;

				// Critical Hit
				var critChance = attacker.GetRightCritChance(target.Protection);
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction);

				// Natural Shield
				// Ignore delay reduction, as knock downs shouldn't be shortened
				NaturalShield.Handle(attacker, target, ref damage, tAction);

				// Deal with it!
				if (damage > 0)
				{
					target.TakeDamage(tAction.Damage = damage, attacker);
					SkillHelper.HandleInjury(attacker, target, damage);
				}

				// Knock down
				// If target is using a shield and defense, don't KD.
				var targetLeftHand = target.LeftHand;
				if (tAction.SkillId != SkillId.Defense || targetLeftHand == null || !targetLeftHand.IsShield)
				{
					// TODO: We have to calculate knockback distance right
					attacker.Shove(target, KnockBackDistance);
					tAction.Set(TargetOptions.KnockDownFinish);
				}

				// Aggro
				target.Aggro(attacker);

				if (target.IsDead)
				{
					aAction.Set(AttackerOptions.KnockBackHit1);
					tAction.Set(TargetOptions.Finished);
				}
			}
			else
			{
				aAction.Set(AttackerOptions.Missed);
			}

			// Reduce arrows
			if (attacker.Magazine != null && !ChannelServer.Instance.Conf.World.InfiniteArrows && !attacker.Magazine.HasTag("/unlimited_arrow/"))
				attacker.Inventory.Decrement(attacker.Magazine);
//.........这里部分代码省略.........

		/// <summary>
		/// Uses the skill.
		/// </summary>
		/// <param name="attacker"></param>
		/// <param name="skill"></param>
		/// <param name="targetEntityId"></param>
		/// <returns></returns>
		public CombatSkillResult Use(Creature attacker, Skill skill, long targetEntityId)
		{
			// Get target
			var target = attacker.Region.GetCreature(targetEntityId);
			if (target == null)
				return CombatSkillResult.InvalidTarget;

			if (target.IsNotReadyToBeHit)
				return CombatSkillResult.Okay;

			// Actions
			var cap = new CombatActionPack(attacker, skill.Info.Id);

			var aAction = new AttackerAction(CombatActionType.RangeHit, attacker, skill.Info.Id, targetEntityId);
			aAction.Set(AttackerOptions.Result);
			aAction.Stun = AttackerStun;
			cap.Add(aAction);

			// Hit by chance
			var chance = attacker.AimMeter.GetAimChance(target);
			var rnd = RandomProvider.Get();
			if (rnd.NextDouble() * 100 < chance)
			{
				aAction.Set(AttackerOptions.KnockBackHit2);

				var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
				tAction.Set(TargetOptions.Result | TargetOptions.CleanHit);
				tAction.Stun = TargetStun;
				cap.Add(tAction);

				// Damage
				var damage = this.GetDamage(attacker, skill);

				// More damage with fire arrow
				if (attacker.Temp.FireArrow)
					damage *= FireBonus;

				// Critical Hit
				var critShieldReduction = (target.LeftHand != null ? target.LeftHand.Data.DefenseBonusCrit : 0);
				var critChance = attacker.GetRightCritChance(target.Protection + critShieldReduction);
				CriticalHit.Handle(attacker, critChance, ref damage, tAction);

				var maxDamage = damage; //Damage without Defense and Protection
				// Subtract target def/prot
				SkillHelper.HandleDefenseProtection(target, ref damage);

				// Defense
				Defense.Handle(aAction, tAction, ref damage);

				// Mana Shield
				ManaShield.Handle(target, ref damage, tAction, maxDamage);

				// Deal with it!
				if (damage > 0)
					target.TakeDamage(tAction.Damage = damage, attacker);

				// TODO: We have to calculate knockback distance right
				// TODO: Target with Defense and shield shouldn't be knocked back
				attacker.Shove(target, KnockBackDistance);

				// Aggro
				target.Aggro(attacker);

				tAction.Set(TargetOptions.KnockDownFinish);

				if (target.IsDead)
				{
					aAction.Set(AttackerOptions.KnockBackHit1);
					tAction.Set(TargetOptions.Finished);
				}

				var weapon = attacker.RightHand;
				var critSkill = attacker.Skills.Get(SkillId.CriticalHit);
				if (skill.Info.Rank >= SkillRank.R5 && weapon != null && weapon.Data.SplashRadius != 0 && weapon.Data.SplashAngle != 0)
				{
					ICollection<Creature> targets = attacker.GetTargetableCreaturesInCone(weapon != null ? (int)weapon.Data.SplashRadius : 200, weapon != null ? (int)weapon.Data.SplashAngle : 20);
					foreach (var splashTarget in targets)
					{
						if (splashTarget != target)
						{
							if (splashTarget.IsNotReadyToBeHit)
								continue;
							TargetAction tSplashAction = new TargetAction(CombatActionType.TakeHit, splashTarget, attacker, skill.Info.Id);
							tSplashAction.Set(TargetOptions.Result | TargetOptions.CleanHit);
							splashTarget.Stun = TargetStun;

							// Base damage
							var damageSplash = this.GetDamage(attacker, skill);

							// Critical Hit

							if (critSkill != null && tAction.Has(TargetOptions.Critical))
							{
//.........这里部分代码省略.........