Thread: How to add, Item on Item, and Item on Object to Emulous.

Explanation/Purpose: To add the Item on Item, and Item on Object packets to emulous
Difficulty: 2/10, using this will require basic java knowledge.
Classes Added/Modified: ItemOnObject.java, ItemOnItem.java, packetHandler.java, useItem.java
Tested On: Emulous...
Bugs/Problems: None =D as far as i know.


Step 1:

Go to server.players.packets, create a new java file named "ItemonItem.java"

open it up and add this inside:

Code:

package server.players.packets;

import server.util.*;
import server.players.*;


/**
 * ItemOnItem
 * @author Ritz/rolfcopter
 **/
public class ItemOnItem implements PacketType {

	
	public void processPacket(Client c, int packetType, int packetSize) {

		int usedWithSlot = c.getInStream().readUnsignedWord();
		int itemUsedSlot = c.getInStream().readUnsignedWordA();
		int useWith = c.playerItems[usedWithSlot] - 1;
		int itemUsed = c.playerItems[itemUsedSlot] - 1;
		UseItem.ItemonItem(c, itemUsed, useWith);
	}
}

Step 2:

also in server.players.packets create another new class called "ItemOnObject.java"

put this inside:

Code:

package server.players.packets;

import server.util.*;
import server.players.*;


/**
 * ItemOnObject
 * @author Ritz/rolfcopter
 **/
public class ItemOnObject implements PacketType {

	
	public void processPacket(Client c, int packetType, int packetSize) {

		int atObjectID = c.getInStream().readSignedWordBigEndian();
		int useItemID = c.getInStream().readUnsignedWord();
		UseItem.ItemonObject(c, atObjectID, useItemID);
	
	}
}

Step 3:

still in server.players.packets create a third class called "UseItem.java"

put this inside:

Code:

package server.players.packets;

import server.players.Client;
import server.util.Misc;

/*
 * UseItem
 * @author Richscape4.3
 */
public class UseItem {

	static void ItemonObject(Client c, int Object, int Item) {

		if (Object == 1) {
			if (Item == 2) {
				c.sendMessage("EXAMPLE");
				} 
			}
			else {
				c.sendMessage("Nothing Interesting Happens.");	
		
		}
	}		

	static void ItemonItem(Client c, int Item, int Item2) {

		if ((Item == 2 && Item2 == 3)) {
			Misc.println("EXAMPLE 2");
		} else {
			c.sendMessage("Nothing Interesting Happens.");	
		}
	}

	
}

Step 4:

Close those files as you don't need them anymore.
Open up PacketHandler.java.

Find:

Code:

	packetId.put(98, w);

and underneath that add this:

Code:

		packetId.put(53, new ItemOnItem());
		packetId.put(192, new ItemOnObject());

Done!

I included 2 examples in the useItem class, that should be enough to get you started, its possible to use switch statements if you find that easier, but its a smaller code to do it like it is there

Enjoy?


Credits: Me, Richscape 4.3 author, as i used the "UseItem" class from there