+import ChessRules from "/base_rules.js";
+import PiPo from "/utils/PiPo.js";
+import Move from "/utils/Move.js";
+
+export default class AllmateRules extends ChessRules {
+
+ static get Options() {
+ return {
+ select: C.Options.select,
+ styles: [
+ "cylinder",
+ "madrasi",
+ "zen"
+ ]
+ };
+ }
+
+ get hasEnpassant() {
+ return false;
+ }
+ get hasMoveStack() {
+ return true;
+ }
+
+ setOtherVariables(fenParsed) {
+ super.setOtherVariables(fenParsed);
+ this.curMove = null;
+ }
+
+ getPotentialMovesFrom(sq) {
+ // Remove direct captures:
+ return super.getPotentialMovesFrom(sq)
+ .filter(m => m.vanish.length == m.appear.length);
+ }
+
+ // Called "recursively" before a move is played, until no effect
+ computeNextMove(move) {
+ if (move.appear.length > 0)
+ this.curMove = move;
+ const color = this.turn;
+ const oppCol = C.GetOppCol(this.turn);
+ let mv = new Move({
+ start: this.curMove.end,
+ end: this.curMove.end,
+ appear: [],
+ vanish: []
+ });
+ this.playOnBoard(move);
+ for (let i=0; i<this.size.x; i++) {
+ for (let j=0; j<this.size.y; j++) {
+ if (this.getColor(i, j) == oppCol && this.isMated(i, j, color)) {
+ mv.vanish.push(
+ new PiPo({x: i, y: j, c: oppCol, p: this.getPiece(i, j)})
+ );
+ }
+ }
+ }
+ this.undoOnBoard(move);
+ move.next = (mv.vanish.length > 0 ? mv : null);
+ }
+
+ // is piece on square x,y mated by color?
+ isMated(x, y, color) {
+ const myColor = C.GetOppCol(color);
+ if (!this.underCheck([x, y], color))
+ return false;
+ for (let i=0; i<this.size.x; i++) {
+ for (let j=0; j<this.size.y; j++) {
+ if (this.getColor(i, j) == myColor) {
+ const movesIJ = super.getPotentialMovesFrom([i, j], myColor);
+ for (let move of movesIJ) {
+ this.playOnBoard(move);
+ let testSquare = [x, y];
+ if (i == x && j == y) {
+ // The mated-candidate has moved itself
+ testSquare = [move.end.x, move.end.y]; }
+ const res = this.underCheck(testSquare, color);
+ this.undoOnBoard(move);
+ if (!res)
+ return false;
+ }
+ }
+ }
+ }
+ return true;
+ }
+
+ // No "under check" conditions in castling
+ getCastleMoves(sq) {
+ return super.getCastleMoves(sq, null, "castleInCheck");
+ }
+
+ filterValid(moves) {
+ return moves; //TODO?: over-simplification to be fixed later
+ }
+
+};
projects / xogo.git / commitdiff
