Adding the rest of Assassin's Skills and Abilities

src/ZoneServer/Buffs/Handlers/Scouts/Assassin/Assassin_Target_Debuff.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Melia.Shared.Game.Const;
+using Melia.Zone.Buffs.Base;
+using Melia.Zone.Network;
+using Melia.Zone.World.Actors;
+using Melia.Zone.World.Actors.Characters;
+
+namespace Melia.Zone.Buffs.Handlers.Scouts.Assassin
+{
+	/// <summary>
+	/// Handler for Assassin Target debuff, which can only
+	/// be applied to a single target and needs to clean
+	/// itself up when it ends
+	/// </summary>
+	[BuffHandler(BuffId.Assassin_Target_Debuff)]
+	internal class Assassin_Target_Debuff : BuffHandler
+	{
+		/// <summary>
+		/// Remove the variable from the caster when the buff ends,
+		/// assuming this entity is still the target
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnEnd(Buff buff)
+		{
+			var targetHandle = buff.Target.Handle;
+			var caster = buff.Caster;
+			if (caster is Character character && character != null && character.Variables.Temp.TryGetInt("Melia.AssassinationTarget", out var assassinationTarget) && assassinationTarget == targetHandle)
+				character.Variables.Temp.Remove("Melia.AssassinationTarget");
+		}
+	}
+}

src/ZoneServer/Buffs/Handlers/Scouts/Assassin/HallucinationSmoke_Buff.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Melia.Shared.Game.Const;
+using Melia.Zone.Buffs.Base;
+using Melia.Zone.Network;
+using Melia.Zone.World.Actors;
+
+namespace Melia.Zone.Buffs.Handlers.Scouts.Assassin
+{
+	/// <summary>
+	/// Handler for Hallucination Smoke Buff, which raises crit rate
+	/// </summary>
+	/// <remarks>
+	/// NumArg1: Skill Level
+	/// NumArg2: Unused
+	/// </remarks>
+	[BuffHandler(BuffId.HallucinationSmoke_Buff)]
+	internal class HallucinationSmoke_Buff : BuffHandler
+	{
+		// Official bonus rate is unknown
+		private const float CRTHRBonus = 0.2f;
+
+		/// <summary>
+		/// Starts buff, increasing Crit Rate
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnActivate(Buff buff, ActivationType activationType)
+		{
+			var CRTHRbuff = buff.Target.Properties.GetFloat(PropertyName.CRTHR) * CRTHRBonus;
+
+			AddPropertyModifier(buff, buff.Target, PropertyName.CRTHR_BM, CRTHRbuff);
+		}
+
+		/// <summary>
+		/// Ends the buff, resetting crit rate
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnEnd(Buff buff)
+		{
+			RemovePropertyModifier(buff, buff.Target, PropertyName.CRTHR_BM);
+		}
+	}
+}

src/ZoneServer/Buffs/Handlers/Scouts/Assassin/HallucinationSmoke_Debuff.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Melia.Shared.Game.Const;
+using Melia.Zone.Buffs.Base;
+using Melia.Zone.Network;
+using Melia.Zone.World.Actors;
+
+namespace Melia.Zone.Buffs.Handlers.Scouts.Assassin
+{
+	/// <summary>
+	/// Handler for Hallucination Smoke Debuff, which reduces
+	/// Accuracy and Evasion
+	/// </summary>
+	/// <remarks>
+	/// NumArg1: Skill Level
+	/// NumArg2: Damage to take when buff ends
+	/// </remarks>
+	[BuffHandler(BuffId.HallucinationSmoke_Debuff)]
+	internal class HallucinationSmoke_Debuff : BuffHandler
+	{
+		private const float DRPenaltyRate = 0.2f;
+		private const float HRPenaltyRate = 0.2f;
+
+		/// <summary>
+		/// Starts buff, reducing Hit and Dodge Rate
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnActivate(Buff buff, ActivationType activationType)
+		{
+			var reduceDR = buff.Target.Properties.GetFloat(PropertyName.DR) * DRPenaltyRate;
+			var reduceHR = buff.Target.Properties.GetFloat(PropertyName.HR) * HRPenaltyRate;
+
+			AddPropertyModifier(buff, buff.Target, PropertyName.DR_BM, -reduceDR);
+			AddPropertyModifier(buff, buff.Target, PropertyName.HR_BM, -reduceHR);
+		}
+
+		/// <summary>
+		/// Ends the buff, resetting hit and dodge rate, and
+		/// potentially dealing damage
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnEnd(Buff buff)
+		{
+			RemovePropertyModifier(buff, buff.Target, PropertyName.DR_BM);
+			RemovePropertyModifier(buff, buff.Target, PropertyName.HR_BM);
+
+			if (buff.NumArg2 > 0 && !buff.Target.IsDead)
+			{
+				var attacker = buff.Caster;
+				var target = buff.Target;
+				var damage = buff.NumArg2;
+
+				target.TakeSimpleHit(damage, attacker, SkillId.None);
+			}
+		}
+	}
+}

src/ZoneServer/Buffs/Handlers/Scouts/Assassin/Hasisas_Buff.cs

@@ -7,13 +7,18 @@ namespace Melia.Zone.Buffs.Handlers.Scouts.Assassin
 	/// <summary>
 	/// Handle for the Hasisas Buff, which increases the target's Attack speed and Crit damage
 	/// </summary>
+	/// <remarks>
+	/// NumArg1: Skill Level
+	/// NumArg2: 1 if the evasion bonus is applied
+	/// </remarks>
 	[BuffHandler(BuffId.Hasisas_Buff)]
 	public class Hasisas_Buff : BuffHandler
 	{
 		private const float AspdBonusBase = 155;
 		private const float AspdBonusPerLevel = 20;
 		private const float CritBonusBase = 3f;
 		private const float CritBonusPerLevel = 1.5f;
+		private const float DRBonusBase = 0.2f;
 		private const float HpLossRate = 0.01f;
 
 		public override void OnActivate(Buff buff, ActivationType activationType)
@@ -23,12 +28,22 @@ public override void OnActivate(Buff buff, ActivationType activationType)
 
 			AddPropertyModifier(buff, buff.Target, PropertyName.ASPD_BM, aspdBonus);
 			AddPropertyModifier(buff, buff.Target, PropertyName.CRTATK_BM, critBonus);
+
+			buff.Vars.SetInt("Hasisas.TickCounter", 0);
+
+			if (buff.NumArg2 > 0)
+			{
+				var drBonus = buff.Target.Properties.GetFloat(PropertyName.DR) * DRBonusBase;
+
+				AddPropertyModifier(buff, buff.Target, PropertyName.DR_BM, drBonus);
+			}
 		}
 
 		public override void OnEnd(Buff buff)
 		{
 			RemovePropertyModifier(buff, buff.Target, PropertyName.ASPD_BM);
 			RemovePropertyModifier(buff, buff.Target, PropertyName.CRTATK_BM);
+			RemovePropertyModifier(buff, buff.Target, PropertyName.DR_BM);
 		}
 
 		public override void WhileActive(Buff buff)
@@ -46,6 +61,24 @@ private void ReduceHp(Buff buff)
 			if (Feature.IsEnabled("HasisasNoHpLoss"))
 				return;
 
+			// Assassin2 increases the number of ticks before you take
+			// damage.  This is done using a counter in a buff variable.
+			// The tick limit is set when applying the buff
+			var tickCounter = buff.Vars.GetInt("Hasisas.TickCounter");
+			tickCounter++;
+
+			if (tickCounter > buff.Vars.GetInt("Hasisas.TickLimit"))
+			{
+				// reset the counter and continue
+				buff.Vars.SetInt("Hasisas.TickCounter", 0);
+			}
+			else
+			{
+				// update the counter and return
+				buff.Vars.SetInt("Hasisas.TickCounter", tickCounter);
+				return;
+			}
+
 			// The description stats an HP loss of 1% per 10 seconds,
 			// which matches the buff's update time. Should a user
 			// change it, the description would no longer be accurate,

src/ZoneServer/Buffs/Handlers/Scouts/Assassin/PiercingHeart_Buff.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Melia.Shared.Game.Const;
+using Melia.Zone.Buffs.Base;
+using Melia.Zone.Network;
+using Melia.Zone.World.Actors;
+
+namespace Melia.Zone.Buffs.Handlers.Scouts.Assassin
+{
+	/// <summary>
+	/// Handler for Piercing Heart Buff, which raises crit rate
+	/// </summary>
+	/// <remarks>
+	/// NumArg1: Skill Level
+	/// NumArg2: Unused
+	/// </remarks>
+	[BuffHandler(BuffId.PiercingHeart_Buff)]
+	internal class PiercingHeart_Buff : BuffHandler
+	{
+		// Official bonus rate is unknown
+		private const float CRTHRBonus = 0.5f;
+
+		/// <summary>
+		/// Starts buff, increasing Crit Rate
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnActivate(Buff buff, ActivationType activationType)
+		{
+			var CRTHRbuff = buff.Target.Properties.GetFloat(PropertyName.CRTHR) * CRTHRBonus;
+
+			AddPropertyModifier(buff, buff.Target, PropertyName.CRTHR_BM, CRTHRbuff);
+		}
+
+		/// <summary>
+		/// Ends the buff, resetting crit rate
+		/// </summary>
+		/// <param name="buff"></param>
+		public override void OnEnd(Buff buff)
+		{
+			RemovePropertyModifier(buff, buff.Target, PropertyName.CRTHR_BM);
+		}
+	}
+}

src/ZoneServer/Buffs/Handlers/Scouts/Assassin/PiercingHeart_Debuff.cs

@@ -0,0 +1,30 @@
+using System;
+using Melia.Shared.Game.Const;
+using Melia.Zone.Buffs.Base;
+using Melia.Zone.World.Actors;
+
+namespace Melia.Zone.Buffs.Handlers.Scout.Assassin
+{
+	/// <summary>
+	/// Handle for the Piercing Heart debuff, which prevents healing
+	/// </summary>
+	[BuffHandler(BuffId.PiercingHeart_Debuff)]
+	public class PiercingHeart_Debuff : BuffHandler
+	{
+		/// <summary>
+		/// Eliminates all healing if the entity has the piercing heart debuff.
+		/// </summary>
+		/// <param name="entity"></param>
+		/// <param name="hpAmount"></param>
+		/// <returns></returns>
+		public static bool TryApply(ICombatEntity entity, ref float hpAmount)
+		{
+			if (!entity.TryGetBuff(BuffId.PiercingHeart_Debuff, out var buff))
+				return false;
+
+			hpAmount = 0;
+
+			return true;
+		}
+	}
+}

src/ZoneServer/Pads/Handlers/Scout/Assassin/Assassin_HallucinationSmoke.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Threading.Tasks;
+using Melia.Shared.Game.Const;
+using Melia.Shared.World;
+using Melia.Zone.Network;
+using Melia.Zone.World.Actors;
+using Melia.Zone.World.Actors.Characters;
+using Melia.Zone.World.Actors.CombatEntities.Components;
+using Melia.Zone.World.Actors.Monsters;
+using Melia.Zone.World.Actors.Pads;
+using Yggdrasil.Logging;
+
+namespace Melia.Zone.Pads.Handlers.Scout.Assassin
+{
+	/// <summary>
+	/// Handler for the ThrouwingSpear_Hoplite33_Pad,
+	/// which displays an explosion effect in a given position
+	/// </summary>
+	[PadHandler(PadName.Assassin_HallucinationSmoke)]
+	public class Assassin_HallucinationSmoke : ICreatePadHandler, IDestroyPadHandler
+	{
+		/// <summary>
+		/// Called when the pad is created.
+		/// </summary>
+		/// <param name="sender"></param>
+		/// <param name="args"></param>
+		public void Created(object sender, PadTriggerArgs args)
+		{
+			Send.ZC_NORMAL.PadUpdate(args.Creator, args.Trigger, PadName.Assassin_HallucinationSmoke, -0.7853982f, 0, 30, true);
+		}
+
+		/// <summary>
+		/// Called when the pad is destroyed.
+		/// </summary>
+		/// <param name="sender"></param>
+		/// <param name="args"></param>
+		public void Destroyed(object sender, PadTriggerArgs args)
+		{
+			Send.ZC_NORMAL.PadUpdate(args.Creator, args.Trigger, PadName.Assassin_HallucinationSmoke, 0, 145.8735f, 30, false);
+		}
+	}
+}

src/ZoneServer/Skills/Combat/SkillModifier.cs

@@ -74,6 +74,14 @@ public class SkillModifier
 		/// </remarks>
 		public float DamageMultiplier { get; set; } = 1;
 
+		/// <summary>
+		/// Gets or sets the Crit Rate multiplier
+		/// </summary>
+		/// <remarks>
+		/// This is applied before anything else that modifies crit rate
+		/// </remarks>
+		public float CritRateMultiplier { get; set; } = 1;
+
 		/// <summary>
 		/// Gets or sets the minimum critical chance.
 		/// </summary>