Functional Game Engine Design for the Web
summary
A functional, data‑driven web game engine is built with Clojure/ClojureScript using an entity‑component‑system where game state is a hashmap and systems compose into a single state -> state loop. Tooling includes REPL, Devcards and a React inspector that live‑edits specs. Performance notes: targets 60 FPS, runs 100+ objects, observes 7–10% GC time, gets 30–40% speedups from static functions and Google Closure Compiler advanced optimizations. Practical rules: prefer multiple arities over partials, avoid multimethods, reduce intermediate collections, use transients/arrays or loop/reduce for hot paths.
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chapters (9)
- 0:00Start
- 0:56What is a game?
- 2:00Why another game engine for the web?
- 2:44The appeal of functional programming to express complex games
- 6:15Modularity
- 22:37Tooling
- 26:05Performance tuning
- 26:23Use the profiler
- 32:42Demo
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