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[1.19] Blockstates, setblock


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I've got a problem with schematics generation. So actually after reading .schematic file I'm getting two arrays of bytes (blockid and blockdata).

The problem is I dont know how to obtain a BlockState for Level#setBlock (2nd parameter), because I dont know what kind of block I'm going to place, just id and data, and I see no static plug for this parameter (Like BlockState.WHATEVER). 

So how can I deal with it? 

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Posted (edited)
17 minutes ago, scaroyder said:

I just read it with NbtIo without any problems...

how did you write them?

Could you please provide more info to NbtIo, i could not find anything about it in www

Edited by Luis_ST
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2 minutes ago, Luis_ST said:

how did you write them?

Could you please provide more info to NbtIo, i could not find anything about it in www

have a look at


Im using it to load schematics from files or to send NBT data via packets between server/client.

Well, I used to do so in 1.6.4, lol. In those times it was named CompressedStreamTools.

The goal im trying to achive is to make schematics import much easier at the server side. I will be able to dl some schematic, put it into server subfolder, and then manipulate with it as I want (dynamically spawn the schematic for some event, or add it to custom worldgen, etc etc etc)

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49 minutes ago, scaroyder said:

have a look at

I kind of thought it was a library

1 hour ago, scaroyder said:

actually  .schematic file just contains a nbt compound, so why not? I just read it with NbtIo without any problems...

how did you write the data into the NBT?

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48 minutes ago, Luis_ST said:

how did you write the data into the NBT?

 public static Schematic get(File f) {
            CompoundTag nbtdata = NbtIo.readCompressed(f);
            short width = nbtdata.getShort("Width");
            short height = nbtdata.getShort("Height");
            short length = nbtdata.getShort("Length");
            byte[] blocks = nbtdata.getByteArray("Blocks");
            byte[] data = nbtdata.getByteArray("Data");
            return new Schematic(width, height, length, blocks, data);
public Schematic(short width, short height, short length, byte[] blocks, byte[] data) {
        this.width = width;
        this.height = height;
        this.length = length;
        this.blocks = blocks;
        this.data = data;

and then I'm using Schematic instance to build schematic in world by calling Level#setBlock.

Well, I supposed to be doing that, but I can't because I dont know where should I get BlockState. 

In 1.6.4 I were able to place a block in world just with coords, blockID and blockdata. 

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ServerLevel.setBlockAndUpdate(). You need the BlockState not the block.

If it is standard minecraft format you can use NbtUtils.readBlockState(CompoundTag)

If it is a BlockEntity then you also need to do Level.setBlockEntity()

again if it is standard nbt you can use BlockEntity.loadStatic()

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