Addition of ChangeAttributeCrystal item handler.

L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/MasterHandler.java

@@ -186,6 +186,7 @@ import handlers.itemhandlers.BlessedSpiritShot;
 import handlers.itemhandlers.Book;
 import handlers.itemhandlers.Bypass;
 import handlers.itemhandlers.Calculator;
+import handlers.itemhandlers.ChangeAttributeCrystal;
 import handlers.itemhandlers.CharmOfCourage;
 import handlers.itemhandlers.Elixir;
 import handlers.itemhandlers.EnchantAttribute;
@@ -525,6 +526,7 @@ public class MasterHandler
 			Book.class,
 			Bypass.class,
 			Calculator.class,
+			ChangeAttributeCrystal.class,
 			CharmOfCourage.class,
 			Elixir.class,
 			EnchantAttribute.class,

L2J_Mobius_2.5_Underground/dist/game/data/scripts/handlers/itemhandlers/ChangeAttributeCrystal.java

@@ -0,0 +1,87 @@
+/*
+ * This file is part of the L2J Mobius project.
+ * 
+ * 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 handlers.itemhandlers;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.l2jmobius.gameserver.enums.ItemGrade;
+import com.l2jmobius.gameserver.enums.PrivateStoreType;
+import com.l2jmobius.gameserver.handler.IItemHandler;
+import com.l2jmobius.gameserver.model.ItemInfo;
+import com.l2jmobius.gameserver.model.actor.L2Playable;
+import com.l2jmobius.gameserver.model.actor.instance.L2PcInstance;
+import com.l2jmobius.gameserver.model.items.instance.L2ItemInstance;
+import com.l2jmobius.gameserver.network.SystemMessageId;
+import com.l2jmobius.gameserver.network.serverpackets.SystemMessage;
+import com.l2jmobius.gameserver.network.serverpackets.attributechange.ExChangeAttributeItemList;
+
+/**
+ * @author Mobius
+ */
+public class ChangeAttributeCrystal implements IItemHandler
+{
+	private static final Map<Integer, ItemGrade> ITEM_GRADES = new HashMap<>();
+	{
+		ITEM_GRADES.put(33502, ItemGrade.S);
+		ITEM_GRADES.put(35749, ItemGrade.R);
+		ITEM_GRADES.put(45817, ItemGrade.R);
+	}
+	
+	@Override
+	public boolean useItem(L2Playable playable, L2ItemInstance item, boolean forceUse)
+	{
+		if (!playable.isPlayer())
+		{
+			playable.sendPacket(SystemMessageId.YOUR_PET_CANNOT_CARRY_THIS_ITEM);
+			return false;
+		}
+		
+		final L2PcInstance player = playable.getActingPlayer();
+		if (player.getPrivateStoreType() != PrivateStoreType.NONE)
+		{
+			player.sendPacket(SystemMessage.getSystemMessage(SystemMessageId.YOU_CANNOT_CHANGE_AN_ATTRIBUTE_WHILE_USING_A_PRIVATE_STORE_OR_WORKSHOP));
+			return false;
+		}
+		
+		if (ITEM_GRADES.get(item.getId()) == null)
+		{
+			player.sendPacket(SystemMessage.getSystemMessage(SystemMessageId.CHANGING_ATTRIBUTES_HAS_BEEN_FAILED));
+			return false;
+		}
+		
+		final List<ItemInfo> itemList = new ArrayList<>();
+		for (L2ItemInstance i : player.getInventory().getItems())
+		{
+			if (i.isWeapon() && i.hasAttributes() && (i.getItem().getItemGrade() == ITEM_GRADES.get(item.getId())))
+			{
+				itemList.add(new ItemInfo(i));
+			}
+		}
+		
+		if (itemList.isEmpty())
+		{
+			player.sendPacket(SystemMessage.getSystemMessage(SystemMessageId.THE_ITEM_FOR_CHANGING_AN_ATTRIBUTE_DOES_NOT_EXIST));
+			return false;
+		}
+		
+		player.sendPacket(new ExChangeAttributeItemList(item.getId(), itemList.toArray(new ItemInfo[itemList.size()])));
+		return true;
+	}
+}