Draw objects and run programs in the ARENA using Python!

The ARENA Python library user guide and tutorials: ARENA Documentation: Python.

Install package using pip:

pip3 install arena-py

Run the hello.py example:

cd examples
python hello.py

hello.py

from arena import *

scene = Scene(host="arena.andrew.cmu.edu", realm="realm", scene="example")

@scene.run_once
def make_box():
    scene.add_object(Box())

scene.run_tasks()

The above is the simplest example of an ARENA Python program. This library sits above the ARENA pub/sub MQTT message protocol: JSON messages described in more detail at https://github.com/conix-center/ARENA-core which runs in a browser. That forms a layer, in turn, on top of A-Frame and THREE.js javascript libraries.

We are adding protection to the ARENA MQTT broker, eventually to host an ACL list to limit access to change your scenes. As a first step, we are requiring Python programs to supply authentication through a Google account.

If you have a web browser available, the ARENA library Arena(host="myhost.com") will launch a web browser the first time and ask you for an account to authenticate you with, before opening a client MQTT connection.

For headless environments, the ARENA library Arena(host="myhost.com") will provide you with a url to cut and paste in a browser anywhere, ask you for an account to authenticate you with, and show you a code you can enter on the command line, before opening a client MQTT connection.

python3 -c "from arena import auth; auth.signout()"

python3 -c "from arena import auth; auth.permissions()"

Changelog can be found here.

• arena/: The ARENA Python library
• examples/: Canonical examples of ARENA functions from the documentation
• examples/legacy/: Deprecated demos for ARENA-py < 0.1.0
• examples/legacy/digital-twins/: Deprecated demo of digital twins of physical spaces for ARENA-py < 0.1.0
• system-tests/: Workouts and tests for ARENA-py
• tools/: Reusable tools for any ARENA scene