akis84

I found the solution and share it

I added this new Class into  net.sf.l2j.gameserver.scripting.scripts.ai.group

/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.scripting.scripts.ai.group;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import net.sf.l2j.Config;
import net.sf.l2j.commons.random.Rnd;
import net.sf.l2j.gameserver.model.L2Skill;
import net.sf.l2j.gameserver.model.actor.L2Attackable;
import net.sf.l2j.gameserver.model.actor.L2Npc;
import net.sf.l2j.gameserver.model.actor.instance.L2PcInstance;
import net.sf.l2j.gameserver.scripting.EventType;
import net.sf.l2j.gameserver.scripting.QuestState;
import net.sf.l2j.gameserver.scripting.scripts.ai.L2AttackableAIScript;

/**
 * Forge of the Gods spawns... When one mob dies, there is a chance to spawn 5 other mobs of the same type.
 */
public class ForgeOfTheGods extends L2AttackableAIScript
{
	private static final Map<Integer, Integer> FOG_SPAWNS = new HashMap<>();
	
	static
	{
		FOG_SPAWNS.put(21376, 21376);
		FOG_SPAWNS.put(21377, 21377);
		FOG_SPAWNS.put(21378, 21378);
		FOG_SPAWNS.put(21379, 21379);
		FOG_SPAWNS.put(21380, 21380);
		FOG_SPAWNS.put(21381, 21381);
		FOG_SPAWNS.put(21382, 21382);
		FOG_SPAWNS.put(21383, 21383);
		FOG_SPAWNS.put(21384, 21384);
		FOG_SPAWNS.put(21385, 21385);
		FOG_SPAWNS.put(21386, 21386);
		FOG_SPAWNS.put(21387, 21387);
//		FOG_SPAWNS.put(21388, 21388); // Archer type
		FOG_SPAWNS.put(21389, 21389);
		FOG_SPAWNS.put(21390, 21390);
		FOG_SPAWNS.put(21391, 21391);
		FOG_SPAWNS.put(21392, 21392);
		FOG_SPAWNS.put(21393, 21393);
//		FOG_SPAWNS.put(21394, 21394); // Lavasaurus
//		FOG_SPAWNS.put(21395, 21395); // Elder Lavasaurus
		FOG_SPAWNS.put(21652, 21652);
		FOG_SPAWNS.put(21653, 21653);
		FOG_SPAWNS.put(21654, 21654);
		FOG_SPAWNS.put(21655, 21655);
		FOG_SPAWNS.put(21656, 21656);
		FOG_SPAWNS.put(21657, 21657);
	}
	
	public ForgeOfTheGods()
	{
		super("ai/group");
	}
	
	@Override
	protected void registerNpcs()
	{
		addEventIds(FOG_SPAWNS.keySet(), EventType.ON_SPELL_FINISHED);
	}
	
	@Override
	public String onSpellFinished(L2Npc npc, L2PcInstance player, L2Skill skill)
	{		
		if (skill.getId() == 4614)
		{	
			for (int i = 0; i < 5; i++)
			{
				final L2Attackable newNpc = (L2Attackable) addSpawn(FOG_SPAWNS.get(npc.getNpcId()), npc, false, 0, false);
				attack(newNpc, player);
			}
			
			if (player != null) {
				// Output list.
				final List<L2PcInstance> candidates = new ArrayList<>();
				int torch = 7264;
				String qn = "Q617_GatherTheFlames";
				QuestState st = null;
				if (player.isInParty())
				{
					// Filter candidates from player's party.
					for (L2PcInstance partyMember : player.getParty().getPartyMembers())
					{
						st = partyMember.getQuestState(qn);
						// Check party members' quest state and range from npc.
						if (st.isStarted() && partyMember.isInsideRadius(npc, Config.ALT_PARTY_RANGE, true, false))
							candidates.add(partyMember);
					}
					if (!candidates.isEmpty())
						Rnd.get(candidates).getQuestState(qn).dropItemsAlways(torch, 1, 0);
				}
				else
				{
					st = player.getQuestState(qn);
					if (st.isStarted())
						st.dropItemsAlways(torch, 1, 0);
				}
			}
		}
		
		return null;
	}
}

and the following line into gameserver/data/xml/scipts.xml

	<script path="scripts.ai.group.ForgeOfTheGods"/>

I want to modify acis packet to spawn 5 mobs of the same type in FoG with a chance after a mob uses the skill 'NPC Death Bomb'

This is actually what happen on retail. Any ideas how to achieve that?

You created a skype account for reports complains bugs etc.. but u must answer our questions . There are some vital bugs , if you don't fix them people will not stay.