webrender/watchopolis

This project is a modern remake of the classic city building game SimCity, built from a version of its original source code, called Micropolis, that was released as open source years ago. The repository packages that same simulation engine, written in C++, into several different modern forms that can all run today. The main version compiles the C++ engine to WebAssembly so it runs directly in a web browser, with a SvelteKit web frontend that draws the city using WebGL. There is a live demo you can try online. The engine can also run without any graphics at all, directly in Node.js, which is useful for automated tools. A notable part of this repository, called Watchopolis, is a version built specifically for Wear OS smartwatches. It uses the same simulation engine, compiled through the Android tools for a watch instead of a browser, paired with a Kotlin interface designed around a round watch screen. On the watch, turning the crown switches between building tools, tapping places a building, dragging pans the view, double tapping changes the zoom level, and triple tapping changes the game's speed. The repository also includes a command line tool for working with saved city files directly, letting a user inspect a city's stats, visualize its layout as text or emoji, edit values like funds or tax rate, or export a city to JSON. The README spends real time on the game's history: how Will Wright's original SimCity was ported to different platforms over the years, why the project uses the name Micropolis instead of SimCity for trademark reasons, and how the current source code was cleaned up and rebuilt. It also describes a larger, more experimental future vision, called MicropolisHub, for turning the simulation into a shared multiplayer world, though that part is aspirational rather than something already built.