adding a field in EntityPlayer but without modify it

[legendaire45]

Hello community forge, I need your advice.

I need to add the class EntityPlayer a field, but I do not want to modify this class.

I visited the wiki and I came across the tutorial on Access Transformer, but it doesn't explain how to add a new field to a class of minecraft

 

How do I add my field to this class?

[mnn]

persistent NBT tag wouldn't suffice?

[legendaire45]

I read this topic (http://www.minecraftforge.net/forum/index.php/topic,6192.0.html) , I managed to "declare my fields" but I can't retrieve a value from another player (I have a Null PointerException)

[mnn]

you could try the EntityJoinWorldEvent approach (if you're talking about datawatchers). the NBT tag alone would suffice if only a server needs access to those data in a player.

[legendaire45]

What is EntityJoinWorldEvent. I never use this class. How does it work?

the NBT tag does not suffice because the client needs access to the data also.

 

for my mistake I think I understand where the problem was.

When a player logged in, I add datawatcher to the player but I don't add to the other player.I think, I should add this to all players on the server but I do not know how?

 

Edit:I finally succeeded in using packets that are activated when a player connects and sends the list of players already present on the server, who just logged in