So I have a Boolean variable in the tile entity and I can change it by right clicking with an item in hand. Its supposed to change something in the GUI of the block and it does...once. Then it doesn't sync anymore.

 

Block Class: https://github.com/BeardlessBrady/Currency-Mod/blob/master/src/main/java/gunn/modcurrency/blocks/BlockVendor.java

 

Tile Entity Class: https://github.com/BeardlessBrady/Currency-Mod/blob/master/src/main/java/gunn/modcurrency/tiles/TileVendor.java

 

Gui Class [1]: https://github.com/BeardlessBrady/Currency-Mod/blob/master/src/main/java/gunn/modcurrency/client/guis/GuiVendor.java

 

Gui Class [2] (Gets called by other): https://github.com/BeardlessBrady/Currency-Mod/blob/master/src/main/java/gunn/modcurrency/client/guis/GuiTab_Lock.java

 

 

Your

onDataPacket

method is creating an

SPacketUpdateTileEntity

from the client-side values by calling

getUpdatePacket

(twice) and then reading those values back into the client-side

TileEntity

. The values sent from the server are completely ignored.

 

Instead of calling

getUpdatePacket

, use the

SPacketUpdateTileEntity

argument that contains the values sent from the server.

I tried that but no luck. Could there be any other reason why it only transfer from once?

You need to call

World#notifyBlockUpdate

if you want to send the update packet to nearby clients.