Addition of SchedulingPattern support for DBSpawnManager.

Contributed by kamikadzz.

L2J_Mobius_01.0_Ertheia/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_01.0_Ertheia/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_02.5_Underground/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_02.5_Underground/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_03.0_Helios/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_03.0_Helios/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_04.0_GrandCrusade/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_04.0_GrandCrusade/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_05.0_Salvation/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_05.0_Salvation/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_05.5_EtinasFate/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_05.5_EtinasFate/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_06.0_Fafurion/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_06.0_Fafurion/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_07.0_PreludeOfWar/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_07.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_08.2_Homunculus/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_08.2_Homunculus/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_09.2_ReturnOfTheQueenAnt/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_09.2_ReturnOfTheQueenAnt/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_09.2_ReturnOfTheQueenAnt/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_09.2_ReturnOfTheQueenAnt/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_10.1_MasterClass/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_10.1_MasterClass/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_10.1_MasterClass/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_10.1_MasterClass/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_10.2_MasterClass/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_10.2_MasterClass/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_10.2_MasterClass/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_10.2_MasterClass/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_1.0/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_1.0/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_1.0/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_1.0/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_1.5_AgeOfSplendor/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_1.5_AgeOfSplendor/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_1.5_AgeOfSplendor/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_1.5_AgeOfSplendor/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_2.0_Saviors/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_2.5_Zaken/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_2.5_Zaken/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_2.5_Zaken/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_2.5_Zaken/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_2.7_Antharas/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_2.7_Antharas/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_2.7_Antharas/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_2.7_Antharas/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_2.8_SevenSigns/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_2.8_SevenSigns/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_2.8_SevenSigns/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_2.8_SevenSigns/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_2.9_SecretOfEmpire/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_2.9_SecretOfEmpire/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_2.9_SecretOfEmpire/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_2.9_SecretOfEmpire/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_3.0_TheKamael/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Classic_Interlude/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/Spawn.java

@@ -24,6 +24,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.l2jmobius.Config;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.xml.NpcData;
 import org.l2jmobius.gameserver.geoengine.GeoEngine;
@@ -69,6 +70,8 @@ public class Spawn extends Location implements IIdentifiable, INamable
 	private int _respawnMinDelay;
 	/** Maximum respawn delay */
 	private int _respawnMaxDelay;
+	/** Respawn Pattern **/
+	private SchedulingPattern _respawnPattern;
 	/** The generic constructor of Npc managed by this Spawn */
 	private Constructor<? extends Npc> _constructor;
 	/** If True an Npc is respawned each time that another is killed */
@@ -194,6 +197,14 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		return _respawnMaxDelay;
 	}
 	
+	/**
+	 * @return respawn pattern
+	 */
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	/**
 	 * Set the maximum number of Npc that this Spawn can manage.
 	 * @param amount
@@ -503,6 +514,11 @@ public class Spawn extends Location implements IIdentifiable, INamable
 		}
 	}
 	
+	public void setRespawnPattern(SchedulingPattern respawnPattern)
+	{
+		_respawnPattern = respawnPattern;
+	}
+	
 	public void setRespawnDelay(int delay)
 	{
 		setRespawnDelay(delay, 0);

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/spawns/NpcSpawnTemplate.java

@@ -25,6 +25,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -54,6 +55,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 	private final int _count;
 	private final Duration _respawnTime;
 	private final Duration _respawnTimeRandom;
+	private final SchedulingPattern _respawnPattern;
 	private final int _chaseRange;
 	private List<ChanceLocation> _locations;
 	private SpawnTerritory _zone;
@@ -74,6 +76,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = template._count;
 		_respawnTime = template._respawnTime;
 		_respawnTimeRandom = template._respawnTimeRandom;
+		_respawnPattern = template._respawnPattern;
 		_chaseRange = template._chaseRange;
 		_spawnAnimation = template._spawnAnimation;
 		_saveInDB = template._saveInDB;
@@ -92,6 +95,7 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		_count = set.getInt("count", 1);
 		_respawnTime = set.getDuration("respawnTime", null);
 		_respawnTimeRandom = set.getDuration("respawnRandom", null);
+		_respawnPattern = (set.getString("respawnPattern", null) == null) || set.getString("respawnPattern", null).isEmpty() ? null : new SchedulingPattern(set.getString("respawnPattern", null));
 		_chaseRange = set.getInt("chaseRange", 0);
 		_spawnAnimation = set.getBoolean("spawnAnimation", false);
 		_saveInDB = set.getBoolean("dbSave", false);
@@ -198,6 +202,11 @@ public class NpcSpawnTemplate implements Cloneable, IParameterized<StatSet>
 		return _respawnTimeRandom;
 	}
 	
+	public SchedulingPattern getRespawnPattern()
+	{
+		return _respawnPattern;
+	}
+	
 	public int getChaseRange()
 	{
 		return _chaseRange;

L2J_Mobius_Essence_4.2_DwellingOfSpirits/dist/game/data/xsd/shared.xsd

@@ -113,6 +113,7 @@
 		<xs:attribute type="xs:positiveInteger" name="count" />
 		<xs:attribute type="xs:string" name="respawnTime" />
 		<xs:attribute type="xs:string" name="respawnRandom" />
+		<xs:attribute type="xs:string" name="respawnPattern" />
 		<xs:attribute type="xs:integer" name="chaseRange" />
 		<xs:attribute type="xs:integer" name="x" />
 		<xs:attribute type="xs:integer" name="y" />

L2J_Mobius_Essence_4.2_DwellingOfSpirits/java/org/l2jmobius/gameserver/instancemanager/DBSpawnManager.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import org.l2jmobius.Config;
 import org.l2jmobius.commons.database.DatabaseFactory;
 import org.l2jmobius.commons.threads.ThreadPool;
+import org.l2jmobius.commons.time.SchedulingPattern;
 import org.l2jmobius.commons.util.Rnd;
 import org.l2jmobius.gameserver.data.SpawnTable;
 import org.l2jmobius.gameserver.data.xml.NpcData;
@@ -121,6 +122,7 @@ public class DBSpawnManager
 					
 					int respawn = 0;
 					int respawnRandom = 0;
+					SchedulingPattern respawnPattern = null;
 					if (spawnTemplate.getRespawnTime() != null)
 					{
 						respawn = (int) spawnTemplate.getRespawnTime().getSeconds();
@@ -129,10 +131,15 @@ public class DBSpawnManager
 					{
 						respawnRandom = (int) spawnTemplate.getRespawnTimeRandom().getSeconds();
 					}
+					if (spawnTemplate.getRespawnPattern() != null)
+					{
+						respawnPattern = spawnTemplate.getRespawnPattern();
+					}
 					
-					if (respawn > 0)
+					if ((respawn > 0) || (respawnPattern != null))
 					{
 						spawn.setRespawnDelay(respawn, respawnRandom);
+						spawn.setRespawnPattern(respawnPattern);
 						spawn.startRespawn();
 					}
 					else
@@ -211,14 +218,27 @@ public class DBSpawnManager
 		{
 			npc.setDBStatus(RaidBossStatus.DEAD);
 			
-			final int respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+			final SchedulingPattern respawnPattern = npc.getSpawn().getRespawnPattern();
-			final int respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+			int respawnMinDelay, respawnMaxDelay, respawnDelay;
-			final int respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+			long respawnTime;
-			final long respawnTime = System.currentTimeMillis() + respawnDelay;
+			
+			if (respawnPattern != null)
+			{
+				respawnTime = respawnPattern.next(System.currentTimeMillis());
+				respawnMinDelay = respawnMaxDelay = respawnDelay = (int) (respawnTime - System.currentTimeMillis());
+			}
+			else
+			{
+				respawnMinDelay = (int) (npc.getSpawn().getRespawnMinDelay() * Config.RAID_MIN_RESPAWN_MULTIPLIER);
+				respawnMaxDelay = (int) (npc.getSpawn().getRespawnMaxDelay() * Config.RAID_MAX_RESPAWN_MULTIPLIER);
+				respawnDelay = Rnd.get(respawnMinDelay, respawnMaxDelay);
+				respawnTime = System.currentTimeMillis() + respawnDelay;
+			}
+			
 			info.set("currentHP", npc.getMaxHp());
 			info.set("currentMP", npc.getMaxMp());
 			info.set("respawnTime", respawnTime);
-			if (!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0)))
+			if ((!_schedules.containsKey(npc.getId()) && ((respawnMinDelay > 0) || (respawnMaxDelay > 0))) || (respawnPattern != null))
 			{
 				LOGGER.info(getClass().getSimpleName() + ": Updated " + npc.getName() + " respawn time to " + Util.formatDate(new Date(respawnTime), "dd.MM.yyyy HH:mm"));
 				_schedules.put(npc.getId(), ThreadPool.schedule(() -> scheduleSpawn(npc.getId()), respawnDelay));