return ([V.MARSHALL,V.CARDINAL].includes(b[1]) ? "Grand/" : "") + b;
}
- initVariables(fen)
+ static IsGoodFen(fen)
{
- super.initVariables(fen);
- this.captures = { "w": {}, "b": {} }; //for promotions
+ if (!ChessRules.IsGoodFen(fen))
+ return false;
+ const fenParsed = V.ParseFen(fen);
+ // 5) Check captures
+ if (!fenParsed.captured || !fenParsed.captured.match(/^[0-9]{10,10}$/))
+ return false;
+ return true;
+ }
+
+ static GenRandInitFen()
+ {
+ const fen = ChessRules.GenRandInitFen();
+ return fen.replace(" w 1111", " w 1111 0000000000");
+ }
+
+ getFen()
+ {
+ return super.getFen() + " " + this.getCapturedFen();
+ }
+
+ getCapturedFen()
+ {
+ let counts = _.map(_.range(10), 0);
+ for (let i=0; i<V.PIECES.length; i++)
+ {
+ counts[i] = this.captured["w"][V.PIECES[i]];
+ counts[5+i] = this.captured["b"][V.PIECES[i]];
+ }
+ return counts.join("");
+ }
+
+ setOtherVariables(fen)
+ {
+ super.setOtherVariables(fen);
+ const fenParsed = V.ParseFen(fen);
+ // Initialize captured pieces' counts from FEN
+ this.captured =
+ {
+ "w":
+ {
+ [V.PAWN]: parseInt(fenParsed.captured[0]),
+ [V.ROOK]: parseInt(fenParsed.captured[1]),
+ [V.KNIGHT]: parseInt(fenParsed.captured[2]),
+ [V.BISHOP]: parseInt(fenParsed.captured[3]),
+ [V.QUEEN]: parseInt(fenParsed.captured[4]),
+ },
+ "b":
+ {
+ [V.PAWN]: parseInt(fenParsed.captured[5]),
+ [V.ROOK]: parseInt(fenParsed.captured[6]),
+ [V.KNIGHT]: parseInt(fenParsed.captured[7]),
+ [V.BISHOP]: parseInt(fenParsed.captured[8]),
+ [V.QUEEN]: parseInt(fenParsed.captured[9]),
+ }
+ };
}
static get size() { return {x:10,y:10}; }
static get MARSHALL() { return 'm'; } //rook+knight
static get CARDINAL() { return 'c'; } //bishop+knight
- static get PIECES() {
+ static get PIECES()
+ {
return ChessRules.PIECES.concat([V.MARSHALL,V.CARDINAL]);
}
+ // There may be 2 enPassant squares (if pawn jump 3 squares)
+ getEnpassantFen()
+ {
+ const L = this.epSquares.length;
+ if (!this.epSquares[L-1])
+ return "-"; //no en-passant
+ let res = "";
+ this.epSquares[L-1].forEach(sq => {
+ res += V.CoordsToSquare(sq) + ",";
+ });
+ return res.slice(0,-1); //remove last comma
+ }
+
// En-passant after 2-sq or 3-sq jumps
- getEpSquare(move)
+ getEpSquare(moveOrSquare)
{
+ if (!moveOrSquare)
+ return undefined;
+ if (typeof moveOrSquare === "string")
+ {
+ const square = moveOrSquare;
+ if (square == "-")
+ return undefined;
+ let res = [];
+ square.split(",").forEach(sq => {
+ res.push(V.SquareToCoords(sq));
+ });
+ return res;
+ }
+ // Argument is a move:
+ const move = moveOrSquare;
const [sx,sy,ex] = [move.start.x,move.start.y,move.end.x];
if (this.getPiece(sx,sy) == V.PAWN && Math.abs(sx - ex) >= 2)
{
// Promotion
let promotionPieces = [V.ROOK,V.KNIGHT,V.BISHOP,V.QUEEN,V.MARSHALL,V.CARDINAL];
promotionPieces.forEach(p => {
- if (!this.captures[color][p] || this.captures[color][p]==0)
+ if (this.captured[color][p]==0)
return;
// Normal move
if (this.board[x+shift][y] == V.EMPTY)
super.updateVariables(move);
if (move.vanish.length==2 && move.appear.length==1 && move.vanish[1].p != V.PAWN)
{
- // Capture: update this.captures
- if (!this.captures[move.vanish[1].c][move.vanish[1].p])
- this.captures[move.vanish[1].c][move.vanish[1].p] = 1;
- else
- this.captures[move.vanish[1].c][move.vanish[1].p]++;
+ // Capture: update this.captured
+ this.captured[move.vanish[1].c][move.vanish[1].p]++;
}
}
{
super.unupdateVariables(move);
if (move.vanish.length==2 && move.appear.length==1 && move.vanish[1].p != V.PAWN)
- {
- this.captures[move.vanish[1].c][move.vanish[1].p] =
- Math.max(0, this.captures[move.vanish[1].c][move.vanish[1].p]-1);
- }
+ this.captured[move.vanish[1].c][move.vanish[1].p]--;
}
- static get VALUES() {
+ static get VALUES()
+ {
return Object.assign(
ChessRules.VALUES,
{'c': 5, 'm': 7} //experimental
static get SEARCH_DEPTH() { return 2; }
- // TODO: this function could be generalized and shared better
+ // TODO: this function could be generalized and shared better (how ?!...)
static GenRandInitFen()
{
let pieces = { "w": new Array(10), "b": new Array(10) };
pieces[c][knight2Pos] = 'n';
pieces[c][rook2Pos] = 'r';
}
- let fen = pieces["b"].join("") +
+ return pieces["b"].join("") +
"/pppppppppp/10/10/10/10/10/10/PPPPPPPPPP/" +
pieces["w"].join("").toUpperCase() +
- " 1111";
- return fen;
+ " w 1111 -";
}
}