[1.15.2]How to sync variable in TE?

[AlexInCube]

I need to synchronize the angle in TE, the angle changes to the server, but not in the client. I don't need to save it in NBT. I used packets to send data from GUI to TE. But I need TE to send the packet to the TE client, how do I do that?

[Niprow]

see:

https://mcforge.readthedocs.io/en/latest/tileentities/tileentity/#synchronizing-the-data-to-the-client

Edited April 29, 2020 by Niprow
doc site

[AlexInCube]

@Nullable
    @Override
    public SUpdateTileEntityPacket getUpdatePacket() {
        CompoundNBT tag = new CompoundNBT();
        write(tag);
        return new SUpdateTileEntityPacket(this.pos,0,tag);
    }

    @Override
    public CompoundNBT getUpdateTag() {
        return write(new CompoundNBT());
    }

    @Override
    public void onDataPacket(NetworkManager net, SUpdateTileEntityPacket pkt) {
        super.onDataPacket(net, pkt);
        readFromNBT(pkt.getNbtCompound());

        BlockState state = this.world.getBlockState(this.pos);
        this.world.notifyBlockUpdate(this.pos, state, state, 3);
    }

I used it, but nothing worked.

[Niprow]

World#notifyBlockUpdate you can not call that in onDataPacket or getUpdatePacket

[DavidM]

    @Override
    public void onDataPacket(NetworkManager net, SUpdateTileEntityPacket pkt) {
        super.onDataPacket(net, pkt);
        readFromNBT(pkt.getNbtCompound());

        BlockState state = this.world.getBlockState(this.pos);
        this.world.notifyBlockUpdate(this.pos, state, state, 3);
    }

World#notifyBlockUpdate is used to notify a block update, not actually update the block on the client side. All you have to do is to read data packet in onDataPacket.

[AlexInCube]

I understand it, I thought it only synchronized what's in the read and write. 

    @Nullable
    @Override
    public SUpdateTileEntityPacket getUpdatePacket() {
        CompoundNBT tag = new CompoundNBT();
        tag.putInt(ANGLE_TAG,this.angle);
        return new SUpdateTileEntityPacket(this.pos,0,tag);
    }

    @Override
    public CompoundNBT getUpdateTag() {
        return write(new CompoundNBT());
    }

    @Override
    public void onDataPacket(NetworkManager net, SUpdateTileEntityPacket pkt) {
        super.onDataPacket(net, pkt);
        BlockState state = this.world.getBlockState(this.pos);
        this.angle = pkt.getNbtCompound().getInt(ANGLE_TAG);
        this.world.notifyBlockUpdate(this.pos, state, state, 3);
    }

 

[AlexInCube]

but the animation in the renderer is kind of jerky.

matrixStackIn.rotate(Vector3f.YP.rotationDegrees(angle+partialTicks*2));

there's gotta be a smooth rotation, and it feels like the animation has 20 fps.

 

public void updateAnimation() { this.angle += 2; if (this.angle > 358) { this.angle = 0; } spawnWaterParticles(this.world, pos, 0, this.angle); }

 

public int getAngle(){ return this.angle; }

Edited April 29, 2020 by AlexInCube

[Niprow]

that is so because of the tick-rate in your tile entity

(if you update it in ITickableTileEntity#tick)

you could change it in Block#tickRate (maybe)

Edited April 29, 2020 by Niprow
how to change tick rate

[AlexInCube]

but how do I fix it?

[Niprow]

  On 4/29/2020 at 3:19 PM, Niprow said:

you could change it in Block#tickRate (maybe)

Expand  

 

[DavidM]

  On 4/29/2020 at 3:04 PM, AlexInCube said:

this.world.notifyBlockUpdate(this.pos, state, state, 3);

Expand  

You are still doing this. Don't do this on the client, as it does nothing (well it might do something, but definitely not what you are expecting).

 

Only send a packet to update your tile entity if the angle changes. Don't do it every tick.

If the angle is not unpredictable and only change as part of an animation, send a packet to the client when the animation starts and handle the animation on the client side.