{
initVariables(fen)
{
- super.initVariables();
+ super.initVariables(fen);
// Also init reserves (used by the interface to show landing pieces)
const V = VariantRules;
this.reserve =
[V.QUEEN]: 0,
}
};
- // It may be a continuation: adjust numbers of pieces according to captures + rebirths
- // TODO
+ 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); });
+ }
+
+ getColor(i,j)
+ {
+ const sizeX = VariantRules.size[0];
+ if (i >= sizeX)
+ return (i==sizeX ? "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];
+ return this.board[i][j].charAt(1);
}
// Used by the interface:
- getReservePieces(color)
+ getReservePpath(color, index)
{
- return {
- [color+V.PAWN]: this.reserve[color][V.PAWN],
- [color+V.ROOK]: this.reserve[color][V.ROOK],
- [color+V.KNIGHT]: this.reserve[color][V.KNIGHT],
- [color+V.BISHOP]: this.reserve[color][V.BISHOP],
- [color+V.QUEEN]: this.reserve[color][V.QUEEN],
- };
+ return color + VariantRules.RESERVE_PIECES[index];
}
- getPotentialMovesFrom([x,y])
+ // Ordering on reserve pieces
+ static get RESERVE_PIECES() {
+ const V = VariantRules;
+ return [V.PAWN,V.ROOK,V.KNIGHT,V.BISHOP,V.QUEEN];
+ }
+
+ getReserveMoves([x,y])
{
- let moves = super.getPotentialMovesFrom([x,y]);
- // Add landing moves:
const color = this.turn;
- Object.keys(this.reserve[color]).forEach(p => {
-
- moves.push(...); //concat... just appear
- });
+ const p = VariantRules.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++)
+ {
+ for (let j=0; j<sizeY; j++)
+ {
+ if (this.board[i][j] == VariantRules.EMPTY)
+ {
+ let mv = new Move({
+ appear: [
+ new PiPo({
+ x: i,
+ y: j,
+ c: color,
+ p: p
+ })
+ ],
+ vanish: [],
+ start: {x:x, y:y}, //a bit artificial...
+ end: {x:i, y:j}
+ });
+ moves.push(mv);
+ }
+ }
+ }
return moves;
}
- // TODO: condition "if this is reserve" --> special square !!! coordinates ??
- getPossibleMovesFrom(sq)
+ getPotentialMovesFrom([x,y])
{
- // Assuming color is right (already checked)
- return this.filterValid( this.getPotentialMovesFrom(sq) );
+ const sizeX = VariantRules.size[0];
+ if (x >= sizeX)
+ {
+ // Reserves, outside of board: x == sizeX(+1)
+ return this.getReserveMoves([x,y]);
+ }
+ // Standard moves
+ return super.getPotentialMovesFrom([x,y]);
}
- // TODO: add reserve moves
getAllValidMoves()
{
-
+ 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]));
+ return this.filterValid(moves);
}
- // TODO: also
atLeastOneMove()
{
-
+ if (!super.atLeastOneMove())
+ {
+ const sizeX = VariantRules.size[0];
+ // Scan for reserve moves
+ for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
+ {
+ let moves = this.filterValid(this.getReserveMoves([sizeX,i]));
+ if (moves.length > 0)
+ return true;
+ }
+ return false;
+ }
+ return true;
}
- // TODO: update reserve
updateVariables(move)
{
+ super.updateVariables(move);
+ if (move.vanish.length == 2 && move.appear.length == 2)
+ return; //skip castle
+ const color = this.turn;
+ const V = VariantRules;
+ if (move.vanish.length == 0)
+ {
+ 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][VariantRules.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]++;
+ 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][VariantRules.PAWN]--;
+ else if (move.vanish.length == 2)
+ this.reserve[color][move.vanish[1].p]--;
}
static get SEARCH_DEPTH() { return 2; } //high branching factor
+ evalPosition()
+ {
+ let evaluation = super.evalPosition();
+ // Add reserves:
+ for (let i=0; i<VariantRules.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];
+ }
+ return evaluation;
+ }
+
getNotation(move)
{
if (move.vanish.length > 0)
return super.getNotation(move);
// Rebirth:
const piece =
- (move.appear[0].p != VariantRules.PAWN ? move.appear.p.toUpperCase() : "");
+ (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;
}
+
+ 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;
+ }
}
projects / vchess.git / blobdiff