Store most popular IBaseEvent to reduce object creation.

L2J_Mobius_01.0_Ertheia/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5040,7 +5096,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_02.5_Underground/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5040,7 +5096,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_03.0_Helios/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5040,7 +5096,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_04.0_GrandCrusade/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5040,7 +5096,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_05.0_Salvation/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5049,7 +5105,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_05.5_EtinasFate/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5049,7 +5105,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_06.0_Fafurion/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -66,7 +66,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3908,8 +3926,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4640,10 +4674,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5049,7 +5105,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_07.0_PreludeOfWar/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -63,7 +63,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3907,8 +3925,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4639,10 +4673,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5048,7 +5104,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_08.2_Homunculus/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -63,7 +63,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/ai/CreatureAI.java

@@ -66,6 +66,8 @@ import org.l2jmobius.gameserver.taskmanager.AttackStanceTaskManager;
  */
 public class CreatureAI extends AbstractAI
 {
+	private OnNpcMoveFinished _onNpcMoveFinished = null;
+	
 	public static class IntentionCommand
 	{
 		protected final CtrlIntention _crtlIntention;
@@ -691,7 +693,11 @@ public class CreatureAI extends AbstractAI
 			WalkingManager.getInstance().onArrived(npc); // Walking Manager support
 			
 			// Notify to scripts
-			EventDispatcher.getInstance().notifyEventAsync(new OnNpcMoveFinished(npc), npc);
+			if (_onNpcMoveFinished == null)
+			{
+				_onNpcMoveFinished = new OnNpcMoveFinished(npc);
+			}
+			EventDispatcher.getInstance().notifyEventAsync(_onNpcMoveFinished, npc);
 		}
 		
 		// Launch actions corresponding to the Event Think

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/actor/Creature.java

@@ -103,6 +103,8 @@ import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDamageRecei
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureDeath;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureKilled;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSee;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillFinishCast;
+import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureSkillUse;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleport;
 import org.l2jmobius.gameserver.model.events.impl.creature.OnCreatureTeleported;
 import org.l2jmobius.gameserver.model.events.listeners.AbstractEventListener;
@@ -289,6 +291,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	/** A list containing the dropped items of this fake player. */
 	private final List<ItemInstance> _fakePlayerDrops = new CopyOnWriteArrayList<>();
 	
+	private OnCreatureAttack _onCreatureAttack = null;
+	private OnCreatureAttacked _onCreatureAttacked = null;
+	private OnCreatureDamageDealt _onCreatureDamageDealt = null;
+	private OnCreatureDamageReceived _onCreatureDamageReceived = null;
+	private OnCreatureAttackAvoid _onCreatureAttackAvoid = null;
+	public OnCreatureSkillFinishCast onCreatureSkillFinishCast = null;
+	public OnCreatureSkillUse onCreatureSkillUse = null;
+	
 	/**
 	 * Creates a creature.
 	 * @param template the creature template
@@ -567,6 +577,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		{
 			_summoner.removeSummonedNpc(getObjectId());
 		}
+		
+		_onCreatureAttack = null;
+		_onCreatureAttacked = null;
+		_onCreatureDamageDealt = null;
+		_onCreatureDamageReceived = null;
+		_onCreatureAttackAvoid = null;
+		onCreatureSkillFinishCast = null;
+		onCreatureSkillUse = null;
 	}
 	
 	@Override
@@ -3907,8 +3925,24 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		doAttack(hit.getDamage(), target, null, false, false, hit.isCritical(), false);
 		
 		// Notify to scripts when the attack has been done.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttack(this, target, null), this);
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureAttacked(this, target, null), target);
+		if (_onCreatureAttack == null)
+		{
+			_onCreatureAttack = new OnCreatureAttack();
+		}
+		_onCreatureAttack.setAttacker(this);
+		_onCreatureAttack.setTarget(target);
+		_onCreatureAttack.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttack, this);
+		
+		if (_onCreatureAttacked == null)
+		{
+			_onCreatureAttacked = new OnCreatureAttacked();
+		}
+		_onCreatureAttacked.setAttacker(this);
+		_onCreatureAttacked.setTarget(target);
+		_onCreatureAttacked.setSkill(null);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttacked, target);
+		
 		if (_triggerSkills != null)
 		{
 			for (OptionsSkillHolder holder : _triggerSkills.values())
@@ -4639,10 +4673,32 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 		// Notify of this attack only if there is an attacking creature.
 		if (attacker != null)
 		{
-			EventDispatcher.getInstance().notifyEventAsync(new OnCreatureDamageDealt(attacker, this, amount, skill, critical, isDOT, reflect), attacker);
+			if (_onCreatureDamageDealt == null)
+			{
+				_onCreatureDamageDealt = new OnCreatureDamageDealt();
+			}
+			_onCreatureDamageDealt.setAttacker(attacker);
+			_onCreatureDamageDealt.setTarget(this);
+			_onCreatureDamageDealt.setDamage(amount);
+			_onCreatureDamageDealt.setSkill(skill);
+			_onCreatureDamageDealt.setCritical(critical);
+			_onCreatureDamageDealt.setDamageOverTime(isDOT);
+			_onCreatureDamageDealt.setReflect(reflect);
+			EventDispatcher.getInstance().notifyEvent(_onCreatureDamageDealt, attacker);
 		}
 		
-		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureDamageReceived(attacker, this, amount, skill, critical, isDOT, reflect), this, DamageReturn.class);
+		if (_onCreatureDamageReceived == null)
+		{
+			_onCreatureDamageReceived = new OnCreatureDamageReceived();
+		}
+		_onCreatureDamageReceived.setAttacker(attacker);
+		_onCreatureDamageReceived.setTarget(this);
+		_onCreatureDamageReceived.setDamage(amount);
+		_onCreatureDamageReceived.setSkill(skill);
+		_onCreatureDamageReceived.setCritical(critical);
+		_onCreatureDamageReceived.setDamageOverTime(isDOT);
+		_onCreatureDamageReceived.setReflect(reflect);
+		final DamageReturn term = EventDispatcher.getInstance().notifyEvent(_onCreatureDamageReceived, this, DamageReturn.class);
 		if (term != null)
 		{
 			if (term.terminate())
@@ -5048,7 +5104,14 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 	 */
 	public void notifyAttackAvoid(Creature target, boolean isDot)
 	{
-		EventDispatcher.getInstance().notifyEventAsync(new OnCreatureAttackAvoid(this, target, isDot), target);
+		if (_onCreatureAttackAvoid == null)
+		{
+			_onCreatureAttackAvoid = new OnCreatureAttackAvoid();
+		}
+		_onCreatureAttackAvoid.setAttacker(this);
+		_onCreatureAttackAvoid.setTarget(target);
+		_onCreatureAttackAvoid.setDamageOverTime(isDot);
+		EventDispatcher.getInstance().notifyEvent(_onCreatureAttackAvoid, target);
 	}
 	
 	/**

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttack.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttack implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttack(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttack()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttack implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttackAvoid.java

@@ -26,20 +26,12 @@ import org.l2jmobius.gameserver.model.events.impl.IBaseEvent;
  */
 public class OnCreatureAttackAvoid implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final boolean _damageOverTime;
+	private Creature _attacker;
+	private Creature _target;
+	private boolean _damageOverTime;
 	
-	/**
-	 * @param attacker who attack
-	 * @param target who avoid
-	 * @param isDot is dot damage
-	 */
-	public OnCreatureAttackAvoid(Creature attacker, Creature target, boolean isDot)
+	public OnCreatureAttackAvoid()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damageOverTime = isDot;
 	}
 	
 	public Creature getAttacker()
@@ -47,19 +39,31 @@ public class OnCreatureAttackAvoid implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
-	/**
-	 * @return
-	 */
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureAttacked.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureAttacked implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final Skill _skill;
+	private Creature _attacker;
+	private Creature _target;
+	private Skill _skill;
 	
-	public OnCreatureAttacked(Creature attacker, Creature target, Skill skill)
+	public OnCreatureAttacked()
 	{
-		_attacker = attacker;
-		_target = target;
-		_skill = skill;
 	}
 	
 	public Creature getAttacker()
@@ -43,16 +40,31 @@ public class OnCreatureAttacked implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageDealt.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageDealt implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageDealt(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageDealt()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageDealt implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureDamageReceived.java

@@ -27,23 +27,16 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureDamageReceived implements IBaseEvent
 {
-	private final Creature _attacker;
-	private final Creature _target;
-	private final double _damage;
-	private final Skill _skill;
-	private final boolean _crit;
-	private final boolean _damageOverTime;
-	private final boolean _reflect;
+	private Creature _attacker;
+	private Creature _target;
+	private double _damage;
+	private Skill _skill;
+	private boolean _crit;
+	private boolean _damageOverTime;
+	private boolean _reflect;
 	
-	public OnCreatureDamageReceived(Creature attacker, Creature target, double damage, Skill skill, boolean crit, boolean damageOverTime, boolean reflect)
+	public OnCreatureDamageReceived()
 	{
-		_attacker = attacker;
-		_target = target;
-		_damage = damage;
-		_skill = skill;
-		_crit = crit;
-		_damageOverTime = damageOverTime;
-		_reflect = reflect;
 	}
 	
 	public Creature getAttacker()
@@ -51,36 +44,71 @@ public class OnCreatureDamageReceived implements IBaseEvent
 		return _attacker;
 	}
 	
+	public synchronized void setAttacker(Creature attacker)
+	{
+		_attacker = attacker;
+	}
+	
 	public Creature getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(Creature target)
+	{
+		_target = target;
+	}
+	
 	public double getDamage()
 	{
 		return _damage;
 	}
 	
+	public synchronized void setDamage(double damage)
+	{
+		_damage = damage;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isCritical()
 	{
 		return _crit;
 	}
 	
+	public synchronized void setCritical(boolean crit)
+	{
+		_crit = crit;
+	}
+	
 	public boolean isDamageOverTime()
 	{
 		return _damageOverTime;
 	}
 	
+	public synchronized void setDamageOverTime(boolean damageOverTime)
+	{
+		_damageOverTime = damageOverTime;
+	}
+	
 	public boolean isReflect()
 	{
 		return _reflect;
 	}
 	
+	public synchronized void setReflect(boolean reflect)
+	{
+		_reflect = reflect;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillFinishCast.java

@@ -28,17 +28,13 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillFinishCast implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
-	private final WorldObject _target;
+	private Creature _caster;
+	private WorldObject _target;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillFinishCast(Creature caster, WorldObject target, Skill skill, boolean simultaneously)
+	public OnCreatureSkillFinishCast()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
-		_target = target;
 	}
 	
 	public Creature getCaster()
@@ -46,21 +42,41 @@ public class OnCreatureSkillFinishCast implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public WorldObject getTarget()
 	{
 		return _target;
 	}
 	
+	public synchronized void setTarget(WorldObject target)
+	{
+		_target = target;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/events/impl/creature/OnCreatureSkillUse.java

@@ -27,15 +27,12 @@ import org.l2jmobius.gameserver.model.skills.Skill;
  */
 public class OnCreatureSkillUse implements IBaseEvent
 {
-	private final Creature _caster;
-	private final Skill _skill;
-	private final boolean _simultaneously;
+	private Creature _caster;
+	private Skill _skill;
+	private boolean _simultaneously;
 	
-	public OnCreatureSkillUse(Creature caster, Skill skill, boolean simultaneously)
+	public OnCreatureSkillUse()
 	{
-		_caster = caster;
-		_skill = skill;
-		_simultaneously = simultaneously;
 	}
 	
 	public Creature getCaster()
@@ -43,16 +40,31 @@ public class OnCreatureSkillUse implements IBaseEvent
 		return _caster;
 	}
 	
+	public synchronized void setCaster(Creature caster)
+	{
+		_caster = caster;
+	}
+	
 	public Skill getSkill()
 	{
 		return _skill;
 	}
 	
+	public synchronized void setSkill(Skill skill)
+	{
+		_skill = skill;
+	}
+	
 	public boolean isSimultaneously()
 	{
 		return _simultaneously;
 	}
 	
+	public synchronized void setSimultaneously(boolean simultaneously)
+	{
+		_simultaneously = simultaneously;
+	}
+	
 	@Override
 	public EventType getType()
 	{

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/skills/SkillCaster.java

@@ -523,7 +523,15 @@ public class SkillCaster implements Runnable
 		}
 		
 		// Notify skill is casted.
-		EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillFinishCast(caster, target, _skill, _skill.isWithoutAction()), caster);
+		if (caster.onCreatureSkillFinishCast == null)
+		{
+			caster.onCreatureSkillFinishCast = new OnCreatureSkillFinishCast();
+		}
+		caster.onCreatureSkillFinishCast.setCaster(caster);
+		caster.onCreatureSkillFinishCast.setTarget(target);
+		caster.onCreatureSkillFinishCast.setSkill(_skill);
+		caster.onCreatureSkillFinishCast.setSimultaneously(_skill.isWithoutAction());
+		EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillFinishCast, caster);
 		
 		// Call the skill's effects and AI interraction and stuff.
 		callSkill(caster, target, _targets, _skill, _item);
@@ -968,7 +976,14 @@ public class SkillCaster implements Runnable
 			return false;
 		}
 		
-		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(new OnCreatureSkillUse(caster, skill, skill.isWithoutAction()), caster, TerminateReturn.class);
+		if (caster.onCreatureSkillUse == null)
+		{
+			caster.onCreatureSkillUse = new OnCreatureSkillUse();
+		}
+		caster.onCreatureSkillUse.setCaster(caster);
+		caster.onCreatureSkillUse.setSkill(skill);
+		caster.onCreatureSkillUse.setSimultaneously(skill.isWithoutAction());
+		final TerminateReturn term = EventDispatcher.getInstance().notifyEvent(caster.onCreatureSkillUse, caster, TerminateReturn.class);
 		if ((term != null) && term.terminate())
 		{
 			caster.sendPacket(ActionFailed.STATIC_PACKET);

L2J_Mobius_09.2_ReturnOfTheQueenAnt/dist/game/data/scripts/ai/areas/FairySettlement/LargeCocoon/LargeCocoon.java

@@ -63,7 +63,11 @@ public class LargeCocoon extends AbstractNpcAI
 		{
 			case "attack":
 			{
-				onCreatureAttacked(new OnCreatureAttacked(player, npc, null));
+				final OnCreatureAttacked attackEvent = new OnCreatureAttacked();
+				attackEvent.setAttacker(player);
+				attackEvent.setTarget(npc);
+				attackEvent.setSkill(null);
+				onCreatureAttacked(attackEvent);
 				break;
 			}
 			case "attackPowerful":