ZMQ & Cap'n Proto Demo

Starter code for using zmq and capnp to do networking between python and unity. The unity project also contains utilities and prefabs for HoloLens 2, such as:

• QR code tracking
• MRTK keypad interface for entering ZMQ server IP
• Scan QR code with ZMQ IP address to connect

Python Dev Setup

• Install mambaforge https://github.com/conda-forge/miniforge#mambaforge
• cd zmq-capnp-python
• mamba env create -f env.yml
• mamba activate demoenv
• python sender.py

Unity Dev Setup

• Clone the repository
• Install the exact unity version found in zmq-capnp-unity/ProjectSettings/ProjectVersion.txt
• Open the unity project
• If there are errors, close and open the unity project
• Run the unity project

Compiling capnp spec

• Install capnproto and capnpc-csharp-win-x86 using chocolatey: https://github.com/c80k/capnproto-dotnetcore
  • choco install capnproto
  • choco install capnpc-csharp-win-x86
• Run ./capnp_compile.cmd

Resources

• https://zeromq.org/
• https://learning-0mq-with-pyzmq.readthedocs.io/en/latest/pyzmq/pyzmq.html
• https://netmq.readthedocs.io/en/latest/introduction/
• https://capnproto.org/
• https://github.com/c80k/capnproto-dotnetcore
• https://github.com/GlitchEnzo/NuGetForUnity#unity-20193-or-newer
• https://github.com/OpenAvikom/mr-grpc-unity
• https://github.com/rderbier/Hololens-QRcodeSample
• https://game.ci/

Troubleshooting

• Close and open unity