Hello, I'm looking to create a toggle-button in a GuiContainer.

 

The idea can be explained as:

- the user opens the GUI of the container, there is a button labeled 'no' there

- the user clicks on the button, the client sends a packet to the server to set a boolean to true on the server-side

- the server would send a packet back, so the GUI would set the button's label to 'yes'

(e.g. think of a 'Machine Enabled' button that can be 'yes' or 'no', perhaps).

 

Also, if a player opened the GUI, the server would have to update the button with the updated value.

 

I already have the button click sending a packet to the server (using SimpleNetworkWrapper), but how can I keep the client updated with the value?

I was intending to send the packet back, but how can I access the GUI from within the messagehandler?

 

Or, is there a better way that I should be using instead to send an update to the GUI?

 

Thank you in advance, I appreciate any pointers that I can receive for this.

I would just suggest updating the value client sided when the button is clicked, and then send the packet to the server so the server can store it. There's really no reason to send the packet back.

I would just suggest updating the value client sided when the button is clicked, and then send the packet to the server so the server can store it. There's really no reason to send the packet back.

 

That's true.

 

However, when the user opens the GUI and the value has already been changed, how can I synchronise the client in that case?

 

 

You'll need to add the state of the button to your TE's NBT and then use getDescriptionPacket to return a new S35PacketUpdateTileEntity with your NBT.

You'll need to add the state of the button to your TE's NBT and then use getDescriptionPacket to return a new S35PacketUpdateTileEntity with your NBT.

 

Thanks, that's pretty much exactly what I was looking for!