Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import { getPiece, piecesBuilder } from "../piece/piecesBuilder.js";
function createBoard() {
let pieces = {};
function getPieces() {
return pieces;
}
function setPieces(piecesParam) {
pieces = piecesParam;
}
function tryMove(movementOrigin, movementDestination, playerColor) {
if (!pieces[movementOrigin].isOfColor(playerColor)) {
return "Invalid move: Attempting to move a wrong color piece.";
}
if (!pieces[movementOrigin].isPossibleMove(movementDestination, pieces)) {
return getInvalidMovementError(pieces[movementOrigin].getFullName());
}
let stateBeforeMoving = createMemento();
move(movementOrigin, movementDestination);
if (isColorOnCheck(playerColor)) {
setMemento(stateBeforeMoving);
return "Invalid move: cannot end turn on check";
}
}
function move(movementOrigin, movementDestination) {
pieces[movementDestination] = pieces[movementOrigin];
pieces[movementDestination].setPosition(movementDestination);
createEmptyTile(movementOrigin);
}
function isStalemate(turnColor) {
return getValidMovementNotCausingCheck(turnColor) === undefined;
}
function isOnCheckMate(playerColor) {
if (isColorOnCheck(playerColor)) {
console.log("possible checkmate");
console.log("is checkmate: " + isColorOnCheckMate(playerColor));
if (isColorOnCheckMate(playerColor))
return true;
}
return false;
}
function isColorOnCheck(color) {
let attackpos = getAllAttackPositionsByColor(color.getOppositeColor());
let kingpos = getKingPositionByColor(color);
return attackpos.has(kingpos);
}
function isColorOnCheckMate(color) {
if (!isColorOnCheck(color)) return false;
return getValidMovementNotCausingCheck(color) == undefined;
}
function getValidMovementNotCausingCheck(color) {
const previousState = createMemento();
for (let coord of getAllCoordinatesByColor(color)) {
for (let mov of movementsFromTheCoordinate(pieces[coord].getPosition())) {
move(pieces[coord].getPosition(), mov);
if (!isColorOnCheck(color)) {
setMemento(previousState);
return { origin: coord, destination: mov };
}
setMemento(previousState);
}
}
return undefined;
}
function movementsFromTheCoordinate(origin) {
pieces[origin].updateCurrentPosition(origin, pieces);
return pieces[origin].getPossibleMovements();
}
function getBoardPieceNames() {
let result = {};
for (let key in pieces) result[key] = pieces[key].getAbbreviation();
return result;
}
function getAllSquaresOfBlackPieces() {
return getAllCoordinatesByColor(PieceColorEnum.Black);
}
function getAllEmptySquares() {
return getAllCoordinatesByColor(PieceColorEnum.Empty);
}
function getAllCoordinatesByColor(color) {
const coloredSquares = [];
for (let coordinate in pieces)
if (pieces[coordinate].isOfColor(color))
coloredSquares.push(coordinate);
return coloredSquares;
}
function createMemento() {
let boardString = "";
const boardNames = getBoardPieceNames();
for (let i=8; i>0; i--)
for (let letter = 0; letter < "abcdefgh".length; letter++) {
let currentID = "abcdefgh"[letter] + i.toString();
boardString += boardNames[currentID] + "-";
}
return boardString;
}
function setMemento(memento) {
setPieces(piecesBuilder(memento.split("-")).buildFromLayout());
}
function getAllAttackPositionsByColor(color) {
const coordinatesUnderAttack = new Set();
if (color.isEmpty()) return coordinatesUnderAttack;
let colorPieces = getAllPiecesByColor(color);
for (let colorPiece of colorPieces) {
colorPiece.getAttackPositions(pieces)
.forEach(coordinate => coordinatesUnderAttack.add(coordinate));
}
return coordinatesUnderAttack;
}
function getKingPositionByColor(color) {
return getAllPiecesByColor(color)
.find((piece) => piece.getAbbreviation() === color.getAbbreviation() + 'K')
.getPosition();
}
function getAllPiecesByColor(color) {
const coloredPieces = [];
let allColorCoordinates = getAllCoordinatesByColor(color);
for (let coloredCoordinate of allColorCoordinates)
coloredPieces.push(pieces[coloredCoordinate]);
return coloredPieces;
}
function createEmptyTile(coordinate) {
pieces[coordinate] = getPiece('_', coordinate);
}
function getInvalidMovementError(pieceFullName) {
return "Invalid " + pieceFullName + " movement";
}
return {
tryMove,
isColorOnCheck,
getValidMovementNotCausingCheck,
movementsFromTheCoordinate,
getBoardPieceNames,
getAllSquaresOfBlackPieces,
getAllEmptySquares,
getAllCoordinatesByColor,
createMemento,
setMemento,
getPieces,
setPieces,
isOnCheckMate,
isStalemate
};
}
export { createBoard };
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