[INFO] 1.7.x Protocol changes (Find the new packet names here!)

Hello all,
As you know the protocol has been massively changed in 1.7. Many plugins that use packets are broken because most people don't know the new packet names. This thread should solve this problem.

The List

if you need any help with the packet names (eg: you're looking for a packet that isn't on the list) than feel free to ask below!

Note: This is not a support thread! If you do not know how to use packets or send them than you probably shouldn't be here! Questions involving "how to send" will be ignored!

Reserved.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Haha, nice.. thanks allot!

 

Packets. Yay

 

CaptainBern
Do you know what Packet17EntityLocationAction is now? I don't see it on the list anywhere. Thanks.

 

Dakary PacketPlayOutGameStateChange and PacketPlayOutBed. (PacketPlayOutBed is used to sleep)

 

Could you list the parameters of the constructor's of each Packet?! I would like to know which parameters i've to use for PacketPlayOutRespawn!
Or how I have to cast the enumdifficulty and the enumgamemode.

Code:java

PacketPlayOutRespawn ppor = new PacketPlayOutRespawn(p.getWorld().getEnvironment().getId(),
(EnumDifficulty)p.getWorld().getDifficulty(),p.getWorld().getWorldType(),
(EnumGamemode)EnumGamemode.valueOf(p.getGameMode().name()));

 

https://github.com/Bukkit/mc-dev/tree/master/net/minecraft/server

 

bobacadodl Sadly that hasn't been updated yet so it won't really help him any further :/
ysl3000 You're using the right parameters but the wrong way to get them. The parameters are NMS classes and you're getting bukkit classes (so it won't work). I don't really have looked at the EnumGamemode and EnumDifficulty classes so I won't know how they work or can be achieved, sorry :/

 

He can still look through the constructors for the old class, https://github.com/Bukkit/mc-dev/blob/master/net/minecraft/server/Packet9Respawn.java, and see what objects you need to pass into it.

 

There doesn't seem to be a Packet205ClientCommand change, it must have been removed.. What might it have been replaced with?

 

It's still there, and it's simply called PacketPlayInClientCommand.

 

CaptainBern You, Sir, are a legend.

Ok, so im getting a few errors:

here is what im doing:

Code:

        public static PacketPlayOutSpawnEntityLiving getMobPacket(String text, Location loc) {
            PacketPlayOutSpawnEntityLiving mobPacket = new PacketPlayOutSpawnEntityLiving();
             
                mobPacket.a = (int) ENTITY_ID;
                mobPacket.b = (byte) EntityType.WITHER.getTypeId();
                mobPacket.c = (int) Math.floor(loc.getBlockX() * 32.0D);
                mobPacket.d = (int) Math.floor(loc.getBlockY() * 32.0D);
                mobPacket.e = (int) Math.floor(loc.getBlockZ() * 32.0D);
                mobPacket.f = (byte) 0;
                mobPacket.g = (byte) 0;
                mobPacket.h = (byte) 0;
                mobPacket.i = (short) 0;
                mobPacket.j = (short) 0;
                mobPacket.k = (short) 0;

and here is an example of the errors:

DescriptionResourcePathLocationType
The field PacketPlayOutSpawnEntityLiving.j is not visiblePackets.java/Christmas Tregmine/src/info/tregmine/christmasline 49Java Problem
`
Please Help asap

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

ice374 The values are private. Either create an EntityLiving and pass that to the constructor or use reflection to edit them.

 

ice374 What Garris0n said

 

CaptainBern Garris0n

Could you please give a example of how I would do that?

 

ice374 Take a look at chasechocolate 's BarApi.

 

That's what I was using in 1.6.4 and are trying to update, but I'm getting the error that I posted above.

CaptainBern Garris0n chasechocolate

Here is the code i have atm (so you can pop it straight into an IDE

Code:java

import java.lang.reflect.Field;
import java.util.HashMap;
 
import net.minecraft.server.v1_7_R1.DataWatcher;
import net.minecraft.server.v1_7_R1.EntityPlayer;
import net.minecraft.server.v1_7_R1.Packet;
 
import net.minecraft.server.v1_7_R1.PacketPlayInClientCommand;
import net.minecraft.server.v1_7_R1.PacketPlayOutSpawnEntityLiving;
import net.minecraft.server.v1_7_R1.PacketPlayOutEntityDestroy;
import net.minecraft.server.v1_7_R1.PacketPlayOutEntityMetadata;
 
import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_7_R1.entity.CraftPlayer;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.plugin.Plugin;
import org.bukkit.scheduler.BukkitRunnable;
 
//Thanks to the amazing ChaseChocolate!
 
public class Packets {
public static final int ENTITY_ID = 1234;
 
private static HashMap<String, Boolean> hasHealthBar = new HashMap<String, Boolean>();
 
public static void sendPacket(Player player, Packet packet){
EntityPlayer entityPlayer = ((CraftPlayer) player).getHandle();
 
entityPlayer.playerConnection.sendPacket(packet);
}
 
public static PacketPlayOutSpawnEntityLiving getMobPacket(String text, Location loc) {
PacketPlayOutSpawnEntityLiving mobPacket = new PacketPlayOutSpawnEntityLiving();
 
mobPacket.a = (int) ENTITY_ID;
mobPacket.b = (byte) EntityType.WITHER.getTypeId();
mobPacket.c = (int) Math.floor(loc.getBlockX() * 32.0D);
mobPacket.d = (int) Math.floor(loc.getBlockY() * 32.0D);
mobPacket.e = (int) Math.floor(loc.getBlockZ() * 32.0D);
mobPacket.f = (byte) 0;
mobPacket.g = (byte) 0;
mobPacket.h = (byte) 0;
mobPacket.i = (short) 0;
mobPacket.j = (short) 0;
mobPacket.k = (short) 0;
 
DataWatcher watcher = getWatcher(text, 300);
 
try{
Field t = PacketPlayOutSpawnEntityLiving.class.getDeclaredField("t");
 
t.setAccessible(true);
t.set(mobPacket, watcher);
} catch(Exception e){
e.printStackTrace();
}
 
return mobPacket;
}
 
public static PacketPlayOutEntityDestroy getDestroyEntityPacket(){
PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy();
 
packet.a = new int[]{ENTITY_ID};
 
return packet;
}
 
public static PacketPlayOutEntityMetadata getMetadataPacket(DataWatcher watcher){
PacketPlayOutEntityMetadata metaPacket = new PacketPlayOutEntityMetadata();
 
metaPacket.a = (int) ENTITY_ID;
 
try{
Field b = PacketPlayOutEntityMetadata.class.getDeclaredField("b");
 
b.setAccessible(true);
b.set(metaPacket, watcher.c());
} catch(Exception e){
e.printStackTrace();
}
 
return metaPacket;
}
 
public static PacketPlayInClientCommand getRespawnPacket(){
PacketPlayInClientCommand packet = new PacketPlayInClientCommand();
 
packet.a = (int) 1;
 
return packet;
}
 
public static DataWatcher getWatcher(String text, int health){
DataWatcher watcher = new DataWatcher();
 
watcher.a(0, (Byte) (byte) 0x20);
watcher.a(6, (Float) (float) health);
watcher.a(10, (String) text);
watcher.a(11, (Byte) (byte) 1);
 
return watcher;
}
 
 
public static void displayTextBar(String text, final Player player, Plugin main) {
PacketPlayOutSpawnEntityLiving mobPacket = getMobPacket(text, player.getLocation());
 
sendPacket(player, mobPacket);
hasHealthBar.put(player.getName(), true);
 
new BukkitRunnable(){
@Override
public void run(){
PacketPlayOutEntityDestroy destroyEntityPacket = getDestroyEntityPacket();
 
sendPacket(player, destroyEntityPacket);
hasHealthBar.put(player.getName(), false);
}
}.runTaskLater(main, 400L);
}
}

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

ice374 Any errors on this one?

 

CaptainBern
http://pastebin.com/uXgUE8E1

Thankyou for trying to help me out

 

ice374 Copy the source of the gist I gave you. It is updated. If you have any errors with it then it's probably something with the datawatcher.

 

Will save a lot of work searching the new names.
Maybe make a google spreadsheet?

Much easier to have tables there!

 

I needed some packets they aren't in your list:
Packet102WindowClick --> PacketPlayInWindowClick
Packet14BlockDig --> PacketPlayInBlockDig
Packet15Place --> PacketPlayInBlockPlace
Packet19EntityAction --> PacketPlayInEntityAction
Packet7UseEntity --> PacketPlayInUseEntity

Please add it to your list for other developers.

 

ice374
Those fields are private, use reflection.

 

Every developer who deals with packets should know about this: http://wiki.vg/Protocol

 

xGhOsTkiLLeRx Made a spreadsheet

I will add all packets very soon.

daniel0916 Yes I'm aware of those. Like I said, the list only includes the packets that are send by the server to the client. However I've updated the list and added all packets that are part of the PLAY protocol.

All packets have been added to the list! There are still a few packets (the login and status packets) which I didn't had time for to figure out their old name. If someone already knows those than please let me know.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Nerp CaptainBern


Hovering over PlayerAnimation has no mention of import or anything, just wants me to change it to PlayerAnimationEvent :l

 

Is the plugin in your build path...

 

ccrama Usage is like this: PlayerAnimation.ARM_SWING.play(player);

 

Thanks for this.

 

Yes Garris0n, yes it is CaptainBern thanks, worked. Stupid mistake