NBT

This package implement the Named Binary Tag format of Minecraft.

The API is very similar to the standard library encoding/json. If you (high probability) have used that, it is easy to use this.

Basic Usage

I don't know why Marshal looks like that, and I will change it to func Marshal(v interface{}) ([]byte, error). Use Encoder is recommended now.

For the following NBT tag:

TAG_Compound("hello world") {
    TAG_String("name"): "Bananrama"
}

To read and write would look like:

package main

import "bytes"
import "github.com/Tnze/go-mc/nbt"

type Compound struct {
    Name string `nbt:"name"` // The field must be started with the capital letter
}

func main() {
    var out bytes.Buffer
    banana := Compound{Name: "Bananrama"}
    _ = nbt.Marshal(&out, banana)

    var rama Compound
    _ = nbt.Unmarshal(out.Bytes(), &rama)
}

Struct field tags

There are two tags supported:

nbt
nbt_type

The nbt tag is used to change the name of the NBT Tag field, whereas the nbt_type tag is used to enforce a certain NBT Tag type when it is ambiguous.

For example:

type Compound struct {
    LongArray []int64
    LongList []int64 `nbt_type:"list"` // forces a long list instead of a long array
}