hathora-et-labora-game/dist/commands/commit.js

Game logic reducer for Uwe Rosenberg's Ora et Labora

import { always, pipe } from 'ramda';
import { match } from 'ts-pattern';
import { nextFrame } from '../board/frame';
import { GameCommandEnum } from '../types';
const checkCanCommit = (state) => {
    if (state === undefined)
        return state;
    // A work-contract responder (active != current) is mid-interrupt: they must
    // place a clergyman in response, not end the whole turn.
    if (state.frame.currentPlayerIndex !== state.frame.activePlayerIndex)
        return undefined;
    // The solo neutral building phase must place all neutral buildings first.
    if (state.frame.neutralBuildingPhase && state.buildings.length !== 0)
        return undefined;
    // Otherwise a player may always end their turn. The rules say each player
    // "gets to carry out one action" — an entitlement, not an obligation (the
    // designer reserves "must" for real obligations), so passing (COMMIT without
    // using the main action) is legal. Requiring mainActionUsed also softlocked
    // end-game states where no legal action remained.
    return state;
};
export const commit = pipe(
//
checkCanCommit, nextFrame);
export const complete = (state) => (partial) => {
    return match(partial)
        .with([], () => {
        if (checkCanCommit(state) === undefined)
            return [];
        return [GameCommandEnum.COMMIT];
    })
        .with([GameCommandEnum.COMMIT], () => [''])
        .otherwise(always([]));
};
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