a4a2348a54ece1670de18620afe03d0736b34456
Headless, data-driven core (no DOM, no eval): loader with one-pass validation, verb-coin interaction resolution, polygon walkables with Dijkstra pathfinding, branching dialogue with mid-conversation saves, declarative JSON conditions/effects, versioned JSON saves. Thin integration layer: asset manifest with graceful placeholders, WebAudio music loop points (midi-playlist convention), canvas renderer (hotspot boxes drawn where hitTest clicks), HUD model. Web harness (web/) + skeleton example game exercising every feature. 69 tests (node --test), tools/run_all.sh gate, docs/SPEC.md design spec. Verified end-to-end in a real browser: intro scene, walking, look/take, room exits, dialogue choices.
moonlit-engine
A SCUMM-style, web-based adventure game engine. Data-driven: a game is a JSON spec, not code. Engine only — game ideas and asset generation come later.
- Design spec: docs/SPEC.md
Quickstart
./tools/run_all.sh # validate example spec + 68 tests — must be green
node tools/validate_game.js example/game.json # check any game spec
python3 -m http.server 8080 # then open http://localhost:8080/web/index.html
The demo (example/game.json + web/) is a two-room skeleton — jetty,
tavern, a suspicious mug, a barkeep, one branching dialogue — deliberately
minimal: it exists to exercise every engine feature, not to be a game.
It ships with the Moonlit Mangrove Calypso track and its loop points.
Layout
src/core/ headless engine (no DOM): loader, world, verbs, dialogue,
walkable, conditions, effects, save, events, engine
src/render/ thin integration layer: asset manifest, audio (loop points),
canvas renderer, HUD model — all testable without a browser
web/ browser harness: index.html + boot.js (~150 lines of glue)
example/ the skeleton game spec
tools/ validate_game.js, run_all.sh
tests/ node --test suite, one file per module
docs/ SPEC.md — the design spec
Requirements
Node 20+ for tests/tooling. Any modern browser for the demo. No dependencies.
Description
SCUMM-style web adventure game engine. Data-driven game specs, verb coin interface, dialogue trees, walkable areas, save/load. Content-agnostic: engine only, assets and game ideas come later.
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JavaScript
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HTML
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