OpenTTDLab – Run reproducible experiments using OpenTTD
In plain words
OpenTTDLab is a research tool that enables reproducible experiments using OpenTTD, the open-source business simulation game. It allows researchers and developers to set up, run, and analyze controlled experiments within the game environment. The tool is designed for those studying game AI, economic systems, or transport management mechanics who need consistent, repeatable test conditions. It integrates with OpenTTD's existing framework to facilitate systematic experimentation and data collection.
written from the facts on this page · September 2026
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Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…
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Launched alongside, February 2024
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