No description
Joey Yakimowich-Payne
7171dfdd5ePresets like piece-hp eagerly return 'ongoing' from
onCheckGameResult to suppress the engine's default checkmate /
stalemate poll (because an HP-enabled king can legally survive
check). Under the previous 'first non-undefined wins' rule,
'ongoing' locked the result and prevented any later preset from
declaring a winner — breaking composition with presets like
first-promotion-wins that declare terminal mid-game.
Two-phase protocol:
- TERMINAL result (white-wins / black-wins / draw / checkmate
/ stalemate / draw-*) immediately wins; engine stops polling.
- 'ongoing' sets a soft 'suppress defaults' flag and CONTINUES
polling — a later preset can still declare a winner.
- undefined = no opinion.
If every poller returns either 'ongoing' or undefined, the engine
honours the suppress flag and returns 'ongoing' without running
the default isCheckmate / isStalemate / draw predicates. If no
poller opinionated, defaults run as before.
Updated PresetDef.onCheckGameResult docblock to match.
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| .github/workflows | ||
| .sisyphus | ||
| docs | ||
| packages | ||
| scripts | ||
| .gitignore | ||
| eslint.config.js | ||
| lefthook.yml | ||
| LICENSE | ||
| package.json | ||
| playwright.config.ts | ||
| README.md | ||
| tsconfig.base.json | ||
| tsconfig.json | ||
| vitest.workspace.ts | ||
@paratype
A Doorenbos-style Rete II rules engine for TypeScript games, with an authoritative WebSocket chess demo.
Packages
packages/rete— Rete II engine corepackages/chess— Browser chess demo (React + Vite)packages/server— Authoritative Bun WebSocket server
Docs
- SPEC.md — Engine specification
- PHASES.md — Development phases & perf budgets
- RULES.md — Chess rule presets
- PROTOCOL.md — WebSocket message protocol
Getting Started
bun install && bun run check