148 lines
4.2 KiB
Java
148 lines
4.2 KiB
Java
/*
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* This file is part of the L2J Mobius project.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.l2jmobius.gameserver.model.drops;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import com.l2jmobius.Config;
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import com.l2jmobius.commons.util.Rnd;
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import com.l2jmobius.gameserver.datatables.ItemTable;
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import com.l2jmobius.gameserver.model.actor.L2Character;
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import com.l2jmobius.gameserver.model.actor.instance.L2RaidBossInstance;
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import com.l2jmobius.gameserver.model.holders.ItemHolder;
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import com.l2jmobius.gameserver.model.items.L2Item;
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import com.l2jmobius.gameserver.util.Util;
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/**
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* @author NosBit
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*/
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public class GroupedGeneralDropItem implements IDropItem
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{
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private final double _chance;
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private List<GeneralDropItem> _items;
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/**
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* @param chance the chance of this drop item.
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*/
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public GroupedGeneralDropItem(double chance)
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{
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_chance = chance;
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}
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protected double getGlobalChanceMultiplier()
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{
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return 1.;
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}
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/**
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* Gets the chance of this drop item.
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* @return the chance
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*/
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public double getChance()
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{
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return _chance;
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}
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/**
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* Gets the chance of this drop item.
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* @param victim the victim
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* @param killer the killer
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* @return the chance modified by any rates.
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*/
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public double getChance(L2Character victim, L2Character killer)
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{
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for (GeneralDropItem gdi : getItems())
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{
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final L2Item item = ItemTable.getInstance().getTemplate(gdi.getItemId());
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if ((item == null) || !item.hasExImmediateEffect())
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{
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return getChance() * getGlobalChanceMultiplier();
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}
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}
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return getChance() * Config.RATE_HERB_DROP_CHANCE_MULTIPLIER;
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}
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/**
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* Gets the items.
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* @return the items
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*/
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public List<GeneralDropItem> getItems()
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{
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return _items;
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}
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/**
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* Sets an item list to this drop item.
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* @param items the item list
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*/
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public void setItems(List<GeneralDropItem> items)
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{
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_items = Collections.unmodifiableList(items);
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}
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/*
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* (non-Javadoc)
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* @see com.l2jmobius.gameserver.model.drop.IDropItem#calculateDrops(com.l2jmobius.gameserver.model.actor.L2Character, com.l2jmobius.gameserver.model.actor.L2Character)
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*/
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@Override
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public Collection<ItemHolder> calculateDrops(L2Character victim, L2Character killer)
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{
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final int levelDifference = victim.getLevel() - killer.getLevel();
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double chanceModifier;
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if (victim instanceof L2RaidBossInstance)
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{
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chanceModifier = Math.max(0, Math.min(1, (levelDifference * 0.15) + 1));
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}
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else
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{
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chanceModifier = 1;
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if (Util.map(levelDifference, -Config.DROP_ITEM_MAX_LEVEL_DIFFERENCE, -Config.DROP_ITEM_MIN_LEVEL_DIFFERENCE, Config.DROP_ITEM_MIN_LEVEL_GAP_CHANCE, 100.0) < (Rnd.nextDouble() * 100))
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{
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return null;
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}
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}
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final double chance = getChance(victim, killer) * chanceModifier;
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final boolean successes = chance > (Rnd.nextDouble() * 100);
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if (successes)
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{
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double totalChance = 0;
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final double random = (Rnd.nextDouble() * 100);
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for (GeneralDropItem item : getItems())
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{
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// Grouped item chance rates should not be modified.
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totalChance += item.getChance();
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if (totalChance > random)
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{
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final Collection<ItemHolder> items = new ArrayList<>(1);
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final long baseDropCount = Rnd.get(item.getMin(victim, killer), item.getMax(victim, killer));
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final long finaldropCount = (long) (Config.L2JMOD_OLD_DROP_BEHAVIOR ? (baseDropCount * Math.max(1, chance / 100)) + ((chance > 100) && ((chance % 100) > (Rnd.nextDouble() * 100)) ? baseDropCount : 0) : baseDropCount);
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items.add(new ItemHolder(item.getItemId(), finaldropCount));
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return items;
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}
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}
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}
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return null;
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}
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}
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