Byte Formatter

Installing

Using the native Unity Package Manager introduced in 2017.2, you can add this library as a package by modifying your manifest.json file found at /ProjectName/Packages/manifest.json to include it as a dependency. See the example below on how to reference it.

Install via OpenUPM

The package is available on the npmjs registry.

Add registry scope

{
  "dependencies": {
    ...
    "com.playdarium.unity.byte-formatter": "x.x.x",
    ...
  },
  "scopedRegistries": [
    {
      "name": "Playdarium",
      "url": "https://registry.npmjs.org",
      "scopes": [
        "com.playdarium.unity"
      ]
    }
  ]
}

Add package in PackageManager

Open Window -> Package Manager choose Packages: My Regestries and install package

Install via GIT URL

"com.playdarium.unity.byte-formatter": "https://gitlab.com/pd-packages/byte-formatter.git#upm"

Now version 2 WIP

Introduction

Byte formatter has different pices:

• ByteReader and ByteWriter
• State serialization
• Byte data validator
• State serialization principle

ByteReader and ByteWriter

Write data example:

public byte[] WriteBytesFromState(State state)
{
    var writer = new ByteWriter();
    writer.Write(state.Value1);
    writer.Write(state.Value2);
    return writer.ToArray();
}

The resulting array of bytes will contain data written in a strict sequence. Data reading should be carried out in the same sequence in which they were written.

Read data example:

public State WriteBytesFromState(byte[] bytes)
{
    var state = new State();
    var reader = new ByteReader(bytes);
    state.Value1 = reader.ReadInt32();
    state.Value2 = reader.ReadInt32();
    return state;
}

State serialization

Prepare classes for generation

Serialized class must be public partial and has attribute [ByteDataContext(nameof(SerializedClass))]

The data to be serialized must be properties with an attribute [PropertyKey(ushort key)] where key is start from 1

Serialized class example:

[ByteDataContext(nameof(State))]
public partial class State
{
    [PropertyKey(1)] public int Value1 { get; set; }
    [PropertyKey(2)] public string Value2 { get; set; }
}

After this you can validate writing and reading data Tools/StateSerialize/Validate Serialization

Warning!

If data added or removed or indexes number changed for serialization, you need to create migration

Add custom data writing and reading

Create static class and add specific attribute [ByteExtension] for custom extensions.

Example:

[ByteExtension]
public static class CustomByteFormatterExtensions{
    ...
}

Custom read or write extensions do not support generic types for generation.

Write extension

Method name must in start contains Write word and as argument you custom type.

Example:

public static void WriteMyCustomType(this ByteWriter writer, MyCustomType value)
{
    writer.Write((int) value);
}

Read extension

Method name must contains Read word and no any arguments.

Example:

public static MyCustomType ReadMyCustomType(this ByteReader reader)
{
    return (MyCustomType) reader.ReadInt32();
}

public static void SkipMyCustomType(this ByteReader reader){
    reader.SkipInt32();
}

Byte data validator

For data validation you must create class with attribute [ByteValidatorDataProvider] in Editor folder. Class must provide custom data variants.

Where:

• DataArray - custom data.
• DataSizeArray - data size in bytes.

[ByteValidatorDataProvider]
public class MyCustomTypeDataProvider : ADataProvider<MyCustomType>
{
	protected override MyCustomType[] DataArray { get; } = {(MyCustomType) 457};
	protected override int[] DataSizeArray { get; } = {4};
}

State serialization principle

Object mapping

Example state:

[ByteDataContext(nameof(State))]
public partial class State
{
    [PropertyKey(1)] public int Value1 { get; set; }
    [PropertyKey(2)] public int Value2 { get; set; }
}

This is the object map of example state

| Name | Type | Data | Size | |------------------|--------|--------|--------| | Properties Count | ushort | 2 | 2 byte | | Key 1 | ushort | 1 | 2 byte | | Offset 1 | int | 0 | 4 byte | | Key 2 | ushort | 2 | 2 byte | | Offset 2 | int | 4 | 4 byte | | Data 1 | int | Value1 | 4 byte | | Data 2 | int | Value2 | 4 byte |