msgpack4ue - A simple Msgpack decoding plugin for Unreal Engine

msgpack4ue is a Unreal Engine plugin which enables decoding of msgpack into UE compliant JSON and primitives.

The primary usage of this plugin is to enable consuming msgpack data over MQTT.

• Tasks board
• Documentation

| The plugin has been developed and built with Unreal Engine 5.1.1

• Features
• Supported platforms
• Setup
• Limitations
• Links

Features

• Decoding of msgpack format (TArray<uint8>) into
  • UE Json
  • Top-level array (wrapped in { "array": [...] })
  • Empty/Null (Caught as failed)
  • Primitives (String, Integer, Floats, Booleans)

Supported platforms

Currently tested and confirmed to be working on:

• Windows x64
• Mac OS Ventura (Apple Silicon)

Setup

1. Download the plugin from releases
2. Unzip and place into your project's Plugin directory
3. On first time opening, the project will pop-up to compile
4. Enable the plugin in the Plugins window in the UE Editor
5. The plugin contains an example blueprint which can be used to test the plugin namely, ACT_BasicDecode

P.S. Clone the repo for an example using the plugin and MQTT in BP ACT_MsgpackWithMQTT_Example

Limitations

• Input must be TArray<uint8>

Links

• Msgpack