tsgammon-core/AbsoluteBoardState.js

A Backgammon library for Typescript, formerly developed as a part of tsgammon-ui

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.redViewAbsoluteBoard = exports.whiteViewAbsoluteBoard = exports.initAbsoluteBoard = void 0;
const BoardState_1 = require("./BoardState");
const GameConf_1 = require("./GameConf");
/**
 * 絶対表記の盤面状態を生成する
 * @param pieces 駒の配置を表す配列
 * @param bornOffs すでに上げた駒の数の配列:bornOffs[0]は赤、[1]は白（省略時はいずれも0）
 * @returns
 */
function initAbsoluteBoard(pieces = GameConf_1.standardConf.initialPos, bornOffs = [0, 0]) {
    const board = (0, BoardState_1.boardState)(pieces, bornOffs);
    return whiteViewAbsoluteBoard(board);
}
exports.initAbsoluteBoard = initAbsoluteBoard;
/**
 * 相対表記であるBoardStateを、Whiteの観点で絶対表記に変換する。
 * 実質的にはそのまま返す
 * @param boardState
 */
function whiteViewAbsoluteBoard(boardState) {
    return {
        points: () => boardState.points,
        piecesAt: (n) => boardState.piecesAt(n),
        whiteBornOff: () => boardState.myBornOff,
        redBornOff: () => boardState.opponentBornOff,
    };
}
exports.whiteViewAbsoluteBoard = whiteViewAbsoluteBoard;
/**
 * 相対表記であるBoardStateを、Redの観点で絶対表記に変換する。
 * 実質的には座標を反転、駒数も正負反転させて返す
 * @param boardState
 */
function redViewAbsoluteBoard(boardState) {
    const boardSize = boardState.points.length - 1;
    return {
        points: () => boardState.points
            .slice()
            .reverse()
            .map((v) => (v === 0 ? v : -v)),
        piecesAt: (n) => -boardState.piecesAt(boardSize - n),
        whiteBornOff: () => boardState.opponentBornOff,
        redBornOff: () => boardState.myBornOff,
    };
}
exports.redViewAbsoluteBoard = redViewAbsoluteBoard;