An educational tool, a virtual laboratory for modelling and simulation of dynamical systems using the Stock and Flow methodology.

Part of the Open Poiesis project.

The following literature is a good start with the methodology used in the playground:

• Thinking In Systems: A Primer by Donella Meadows
• Business Dynamics: Systems Thinking and Modeling for a Complex World by John D. Sterman

This is a Godot application which uses the Poietic Stock and Flow simulation engine plugin written in Swift.

1. Download the Godot Engine using one of the following methods:
   • Download Webpage (version >= 4.4)
   • On MacOS use brew install godot
2. Install Swift:
   • On MacOS: Install Xcode.
   • On other platforms: Install Swift

Get the Poietic Playground sources with submodules and run the build script:

git clone --recurse-submodules https://github.com/OpenPoiesis/poietic-playground.git
./build

The build script does the following:

• Updates the submodule.
• Builds the Swift Godot plugin
• Copies the artifacts into the ./bin directory.

• Poietic
  • Core – Model and design representation library
  • Flows – Stock and Flow simulation library
  • Godot – Godot plugin that wraps the Poietic flows simulator
• SwiftGodot – Bridge for Godot plugins written in Swift

• Stefan Urbanek

• Radomír Bosák