class CrazyhouseRules extends ChessRules
{
- initVariables(fen)
+ static IsGoodFen(fen)
{
- super.initVariables(fen);
- // Also init reserves (used by the interface to show landing pieces)
- const V = VariantRules;
+ if (!ChessRules.IsGoodFen(fen))
+ return false;
+ const fenParsed = V.ParseFen(fen);
+ // 5) Check reserves
+ if (!fenParsed.reserve || !fenParsed.reserve.match(/^[0-9]{10,10}$/))
+ return false;
+ // 6) Check promoted array
+ if (!fenParsed.promoted)
+ return false;
+ if (fenParsed.promoted == "-")
+ return true; //no promoted piece on board
+ const squares = fenParsed.promoted.split(",");
+ for (let square of squares)
+ {
+ const c = V.SquareToCoords(square);
+ if (c.y < 0 || c.y > V.size.y || isNaN(c.x) || c.x < 0 || c.x > V.size.x)
+ return false;
+ }
+ return true;
+ }
+
+ static ParseFen(fen)
+ {
+ const fenParts = fen.split(" ");
+ return Object.assign(
+ ChessRules.ParseFen(fen),
+ {
+ reserve: fenParts[5],
+ promoted: fenParts[6],
+ }
+ );
+ }
+
+ static GenRandInitFen()
+ {
+ return ChessRules.GenRandInitFen() + " 0000000000 -";
+ }
+
+ getFen()
+ {
+ return super.getFen() + " " + this.getReserveFen() + " " + this.getPromotedFen();
+ }
+
+ getReserveFen()
+ {
+ let counts = new Array(10);
+ for (let i=0; i<V.PIECES.length-1; i++) //-1: no king reserve
+ {
+ counts[i] = this.reserve["w"][V.PIECES[i]];
+ counts[5+i] = this.reserve["b"][V.PIECES[i]];
+ }
+ return counts.join("");
+ }
+
+ getPromotedFen()
+ {
+ let res = "";
+ for (let i=0; i<V.size.x; i++)
+ {
+ for (let j=0; j<V.size.y; j++)
+ {
+ if (this.promoted[i][j])
+ res += V.CoordsToSquare({x:i,y:j});
+ }
+ }
+ if (res.length > 0)
+ res = res.slice(0,-1); //remove last comma
+ else
+ res = "-";
+ return res;
+ }
+
+ setOtherVariables(fen)
+ {
+ super.setOtherVariables(fen);
+ const fenParsed = V.ParseFen(fen);
+ // Also init reserves (used by the interface to show landable pieces)
this.reserve =
{
"w":
{
- [V.PAWN]: 0,
- [V.ROOK]: 0,
- [V.KNIGHT]: 0,
- [V.BISHOP]: 0,
- [V.QUEEN]: 0,
+ [V.PAWN]: parseInt(fenParsed.reserve[0]),
+ [V.ROOK]: parseInt(fenParsed.reserve[1]),
+ [V.KNIGHT]: parseInt(fenParsed.reserve[2]),
+ [V.BISHOP]: parseInt(fenParsed.reserve[3]),
+ [V.QUEEN]: parseInt(fenParsed.reserve[4]),
},
"b":
{
- [V.PAWN]: 0,
- [V.ROOK]: 0,
- [V.KNIGHT]: 0,
- [V.BISHOP]: 0,
- [V.QUEEN]: 0,
+ [V.PAWN]: parseInt(fenParsed.reserve[5]),
+ [V.ROOK]: parseInt(fenParsed.reserve[6]),
+ [V.KNIGHT]: parseInt(fenParsed.reserve[7]),
+ [V.BISHOP]: parseInt(fenParsed.reserve[8]),
+ [V.QUEEN]: parseInt(fenParsed.reserve[9]),
}
};
- const [sizeX,sizeY] = VariantRules.size;
- this.promoted = doubleArray(sizeX, sizeY, false);
- // May be a continuation: adjust numbers of pieces in reserve + promoted pieces
- this.moves.forEach(m => { this.updateVariables(m); });
+ this.promoted = doubleArray(V.size.x, V.size.y, false);
+ if (fenParsed.promoted != "-")
+ {
+ for (let square of fenParsed.promoted.split(","))
+ {
+ const [x,y] = V.SquareToCoords(square);
+ promoted[x][y] = true;
+ }
+ }
}
getColor(i,j)
{
- const sizeX = VariantRules.size[0];
- if (i >= sizeX)
- return (i==sizeX ? "w" : "b");
+ if (i >= V.size.x)
+ return (i==V.size.x ? "w" : "b");
return this.board[i][j].charAt(0);
}
+
getPiece(i,j)
{
- const sizeX = VariantRules.size[0];
- if (i >= sizeX)
- return VariantRules.RESERVE_PIECES[j];
+ if (i >= V.size.x)
+ return V.RESERVE_PIECES[j];
return this.board[i][j].charAt(1);
}
// Used by the interface:
getReservePpath(color, index)
{
- return color + VariantRules.RESERVE_PIECES[index];
+ return color + V.RESERVE_PIECES[index];
}
- // Put an ordering on reserve pieces
- static get RESERVE_PIECES() {
- const V = VariantRules;
+ // Ordering on reserve pieces
+ static get RESERVE_PIECES()
+ {
return [V.PAWN,V.ROOK,V.KNIGHT,V.BISHOP,V.QUEEN];
}
getReserveMoves([x,y])
{
const color = this.turn;
- const p = VariantRules.RESERVE_PIECES[y];
+ const p = V.RESERVE_PIECES[y];
if (this.reserve[color][p] == 0)
return [];
let moves = [];
- const [sizeX,sizeY] = VariantRules.size;
- const pawnShift = (p==VariantRules.PAWN ? 1 : 0);
- for (let i=pawnShift; i<sizeX-pawnShift; i++)
+ const pawnShift = (p==V.PAWN ? 1 : 0);
+ for (let i=pawnShift; i<V.size.x-pawnShift; i++)
{
- for (let j=0; j<sizeY; j++)
+ for (let j=0; j<V.size.y; j++)
{
- if (this.board[i][j] == VariantRules.EMPTY)
+ if (this.board[i][j] == V.EMPTY)
{
let mv = new Move({
appear: [
getPotentialMovesFrom([x,y])
{
- const sizeX = VariantRules.size[0];
- if (x >= sizeX)
+ if (x >= V.size.x)
{
- // Reserves, outside of board: x == sizeX
+ // Reserves, outside of board: x == sizeX(+1)
return this.getReserveMoves([x,y]);
}
// Standard moves
{
let moves = super.getAllValidMoves();
const color = this.turn;
- const sizeX = VariantRules.size[0];
- for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
- moves = moves.concat(this.getReserveMoves([sizeX+(color=="w"?0:1),i]));
+ for (let i=0; i<V.RESERVE_PIECES.length; i++)
+ moves = moves.concat(this.getReserveMoves([V.size.x+(color=="w"?0:1),i]));
return this.filterValid(moves);
}
{
if (!super.atLeastOneMove())
{
- const sizeX = VariantRules.size[0];
- // Scan for reserve moves
- for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
+ const color = this.turn;
+ // Search one reserve move
+ for (let i=0; i<V.RESERVE_PIECES.length; i++)
{
- let moves = this.filterValid(this.getReserveMoves([sizeX,i]));
+ let moves = this.filterValid(
+ this.getReserveMoves([V.size.x+(this.turn=="w"?0:1), i]) );
if (moves.length > 0)
return true;
}
super.updateVariables(move);
if (move.vanish.length == 2 && move.appear.length == 2)
return; //skip castle
- const color = this.turn;
- const V = VariantRules;
- // Three types of move:
- // 1. Rebirth: just update material
- // 2. Standard move:
- // a. check if a promoted piece is moving
- // b. check if it's a promotion (mutually exclusive)
- // 3. Capture:
- // a. check if a promoted piece is captured (and mark move)
- // b. check if a promoted piece is moving
- // c. check if it's a promotion (mutually exclusive with b)
+ const color = move.appear[0].c;
if (move.vanish.length == 0)
- this.reserve[color][move.appear[0].p]--;
- else if (move.vanish.length == 1)
{
- if (this.promoted[move.start.x][move.start.y])
- {
- this.promoted[move.start.x][move.start.y] = false;
- this.promoted[move.end.x][move.end.y] = true;
- }
- else if (move.vanish[0].p == V.PAWN && move.appear[0].p != V.PAWN)
- this.promoted[move.end.x][move.end.y] = true;
- }
- else //capture
- {
- if (this.promoted[move.end.x][move.end.y])
- {
- move.capturePromoted = true; //required for undo
- this.reserve[color][VariantRules.PAWN]++;
- this.promoted[move.end.x][move.end.y] = false;
- }
- else
- this.reserve[color][move.vanish[1].p]++;
- if (this.promoted[move.start.x][move.start.y])
- {
- this.promoted[move.start.x][move.start.y] = false;
- this.promoted[move.end.x][move.end.y] = true;
- }
- else if (move.vanish[0].p == V.PAWN && move.appear[0].p != V.PAWN)
- this.promoted[move.end.x][move.end.y] = true;
+ this.reserve[color][move.appear[0].p]--;
+ return;
}
+ move.movePromoted = this.promoted[move.start.x][move.start.y];
+ move.capturePromoted = this.promoted[move.end.x][move.end.y]
+ this.promoted[move.start.x][move.start.y] = false;
+ this.promoted[move.end.x][move.end.y] = move.movePromoted
+ || (move.vanish[0].p == V.PAWN && move.appear[0].p != V.PAWN);
+ if (move.capturePromoted)
+ this.reserve[color][V.PAWN]++;
+ else if (move.vanish.length == 2)
+ this.reserve[color][move.vanish[1].p]++;
}
unupdateVariables(move)
{
super.unupdateVariables(move);
+ if (move.vanish.length == 2 && move.appear.length == 2)
+ return;
const color = this.turn;
- const V = VariantRules;
if (move.vanish.length == 0)
- this.reserve[color][move.appear[0].p]++;
- else if (move.vanish.length == 1)
{
- if (this.promoted[move.end.x][move.end.y])
- {
- this.promoted[move.end.x][move.end.y] = false;
- if (move.vanish[0].p != V.PAWN || move.appear[0].p == V.PAWN)
- {
- // Not a promotion (= promoted piece creation)
- this.promoted[move.start.x][move.start.y] = true;
- }
- }
- }
- else //capture
- {
- if (this.promoted[move.end.x][move.end.y])
- {
- this.promoted[move.end.x][move.end.y] = !!move.capturePromoted;
- if (move.vanish[0].p != V.PAWN || move.appear[0].p == V.PAWN)
- this.promoted[move.start.x][move.start.y] = true;
- }
- // Un-update material:
- if (move.capturePromoted)
- this.reserve[color][VariantRules.PAWN]--;
- else
- this.reserve[color][move.vanish[1].p]--;
+ this.reserve[color][move.appear[0].p]++;
+ return;
}
+ if (move.movePromoted)
+ this.promoted[move.start.x][move.start.y] = true;
+ this.promoted[move.end.x][move.end.y] = move.capturePromoted;
+ if (move.capturePromoted)
+ this.reserve[color][V.PAWN]--;
+ else if (move.vanish.length == 2)
+ this.reserve[color][move.vanish[1].p]--;
}
static get SEARCH_DEPTH() { return 2; } //high branching factor
{
let evaluation = super.evalPosition();
// Add reserves:
- for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
+ for (let i=0; i<V.RESERVE_PIECES.length; i++)
{
- const p = VariantRules.RESERVE_PIECES[i];
- evaluation += this.reserve["w"][p] * VariantRules.VALUES[p];
- evaluation -= this.reserve["b"][p] * VariantRules.VALUES[p];
+ const p = V.RESERVE_PIECES[i];
+ evaluation += this.reserve["w"][p] * V.VALUES[p];
+ evaluation -= this.reserve["b"][p] * V.VALUES[p];
}
return evaluation;
}
return super.getNotation(move);
// Rebirth:
const piece =
- (move.appear[0].p != VariantRules.PAWN ? move.appear[0].p.toUpperCase() : "");
- const finalSquare =
- String.fromCharCode(97 + move.end.y) + (VariantRules.size[0]-move.end.x);
- return piece + "@" + finalSquare;
+ (move.appear[0].p != V.PAWN ? move.appear[0].p.toUpperCase() : "");
+ return piece + "@" + V.CoordsToSquare(move.end);
}
getLongNotation(move)
{
if (move.vanish.length > 0)
return super.getLongNotation(move);
- const finalSquare =
- String.fromCharCode(97 + move.end.y) + (VariantRules.size[0]-move.end.x);
- return "@" + finalSquare;
+ return "@" + V.CoordsToSquare(move.end);
}
}
+
+const VariantRules = CrazyhouseRules;
projects / vchess.git / blobdiff