[1.15] Synchronize a float between the server and client.

[Awsome]

I have a tileentity that stores a temperature value as a float. I need the temperature to get sent to the container so that it can update the GUI on the client.

I know I need to use a custom packet in order to send the value over to the client, but I don't exactly know where I should recieve the packet.

 

[Yohann]

How do you store the float ? You absolutety need to use a custom packet ?

In fact, without further details I would say maybe use the dataManager for client-side synchronization and override the writeAdditional and readAdditional methods to make your data persistent.

[Awsome]

The float value is stored inside of a custom capability that the tile entity has. I'll check out dataManager and see if I can use that instead.

 

Link to source:

TileEntity:

https://github.com/Awsomekeldeo/TechMod/blob/1.15-port/src/main/java/awsome/techmod/tileentity/TEFirebox.java

Container:

https://github.com/Awsomekeldeo/TechMod/blob/1.15-port/src/main/java/awsome/techmod/inventory/container/ContainerFirebox.java

GUI:

https://github.com/Awsomekeldeo/TechMod/blob/1.15-port/src/main/java/awsome/techmod/gui/FireboxScreen.java

Capability:

-Registration: https://github.com/Awsomekeldeo/TechMod/blob/1.15-port/src/main/java/awsome/techmod/api/capability/energy/CapabilityHeat.java

-Default Implementation: https://github.com/Awsomekeldeo/TechMod/blob/1.15-port/src/main/java/awsome/techmod/api/capability/impl/HeatHandler.java

-Capability Interface: https://github.com/Awsomekeldeo/TechMod/blob/1.15-port/src/main/java/awsome/techmod/api/capability/energy/IHeat.java

Edited August 1, 2020 by Awsome
Posted links to source

[Awsome]

As far as I can tell dataManager seems to be used exclusively for entities. So I'm not quite sure that would work for what I'm doing.

[Yohann]

My mistake, I didn't properly read your post (it's late here!).
  

So yes, you have to use the packets with capabilities. This time, if I correctly read your post you don't know where you should recieve the packet. 

I've never really done what you want to do, but I have some basics.

 

You need to follow this in the documation. The principle is to create a class that gathers everything you need for the network

A fast example :

public class Packet
{
    private float temperature;
 
    public Packet(int temperature_)
    {
        this.temperature = temperature_;
    }

	// "responsible for encoding the message"
	public static void encode(Packet packet, PacketBuffer buffer)
	{
    	buffer.writeInt(packet.temperature);
	}
	
	// "responsible for decoding the message"
	public static Packet decode(PacketBuffer buffer)
    {
        int temperature = buffer.readInt();
        Packet instance = new Packet(temperature);
        return instance;
    }

	// What's INSTANCE ? Check Getting Started in the doc 
    public static void registerMessage()
    {
        INSTANCE.messageBuilder(Packet.class, 0)
                .encoder(Packet::encode)
                .decoder(Packet::decode)
                .consumer(Packet::handle)
                .add(); // "Registering Packets" section
    }

	// "responsible for handling the message"
    public static void handle(Packet msg, Supplier<NetworkEvent.Context> ctx) {
      ctx.get().enqueueWork(() -> {
          // Work that needs to be threadsafe (most work)
          EntityPlayerMP sender = ctx.get().getSender(); // the client that sent this packet
          // do stuff
      });
      ctx.get().setPacketHandled(true);
    }
}
}

There's probably some things missing, but this should help.

 

EDIT : Oh, I forgot! You need to call registerMessage() in the setup function of your mod.

 

Edited August 1, 2020 by Yohann
buggy link

[poopoodice]

You don't really need a packet just to sync a float, just convert it to int (maybe times it by 100, I don't know) and use 

trackInt()

or

trackIntArray()

in Container.

[Awsome]

oh yeah, I could do that since I'm rounding the temperature to 2 decimal places anyways

and I'm already using trackIntArray to track the burn time of fuel in it's fuel slot

Edited August 1, 2020 by Awsome

[Awsome]

thanks, that was exactly what I needed to do. The temperature reading now displays properly.