I am having an extended Player saving some kind of mana and want to render this as an mana bar on client side. how can I synchronize between client and server, so that the client has the data fromn the server?

http://www.minecraftforum.net/forums/mapping-and-modding/mapping-and-modding-tutorials/1571567-forge-1-6-4-1-8-eventhandler-and

or:

http://www.minecraftforge.net/forum/index.php/topic,20135.0.html

 

Remember:

http://greyminecraftcoder.blogspot.com.au/2015/01/thread-safety-with-network-messages.html

Seems like I got it to work, thank you very much!