- isAttackedByPawn([x,y], colors)
- {
- for (let c of colors)
- {
- const color = (c=="c" ? this.turn : c);
- let pawnShift = (color=="w" ? 1 : -1);
- if (x+pawnShift>=0 && x+pawnShift<8)
- {
- for (let i of [-1,1])
- {
- if (y+i>=0 && y+i<8 && this.getPiece(x+pawnShift,y+i)==V.PAWN
- && this.getColor(x+pawnShift,y+i)==c)
- {
+ getAllValidMoves() {
+ const oppCol = V.GetOppCol(this.turn);
+ let potentialMoves = [];
+ for (let i = 0; i < V.size.x; i++) {
+ for (let j = 0; j < V.size.y; j++) {
+ // NOTE: just testing == color isn't enough because of checkred pieces
+ if (this.board[i][j] != V.EMPTY && this.getColor(i, j) != oppCol) {
+ Array.prototype.push.apply(
+ potentialMoves,
+ this.getPotentialMovesFrom([i, j])
+ );
+ }
+ }
+ }
+ return this.filterValid(potentialMoves);
+ }
+
+ atLeastOneMove() {
+ const oppCol = V.GetOppCol(this.turn);
+ for (let i = 0; i < V.size.x; i++) {
+ for (let j = 0; j < V.size.y; j++) {
+ // NOTE: just testing == color isn't enough because of checkered pieces
+ if (this.board[i][j] != V.EMPTY && this.getColor(i, j) != oppCol) {
+ const moves = this.getPotentialMovesFrom([i, j]);
+ if (moves.length > 0) {
+ for (let k = 0; k < moves.length; k++) {
+ if (this.filterValid([moves[k]]).length > 0) return true;
+ }
+ }
+ }
+ }
+ }
+ return false;
+ }
+
+ // colors: array, generally 'w' and 'c' or 'b' and 'c'
+ isAttacked(sq, colors) {
+ if (!Array.isArray(colors)) colors = [colors];
+ return (
+ this.isAttackedByPawn(sq, colors) ||
+ this.isAttackedByRook(sq, colors) ||
+ this.isAttackedByKnight(sq, colors) ||
+ this.isAttackedByBishop(sq, colors) ||
+ this.isAttackedByQueen(sq, colors) ||
+ this.isAttackedByKing(sq, colors)
+ );
+ }
+
+ isAttackedByPawn([x, y], colors) {
+ for (let c of colors) {
+ const color = (c == "c" ? this.turn : c);
+ let pawnShift = color == "w" ? 1 : -1;
+ if (x + pawnShift >= 0 && x + pawnShift < 8) {
+ for (let i of [-1, 1]) {
+ if (
+ y + i >= 0 &&
+ y + i < 8 &&
+ this.getPiece(x + pawnShift, y + i) == V.PAWN &&
+ this.getColor(x + pawnShift, y + i) == c
+ ) {