| 1 | import ChessRules from "/base_rules.js"; |
| 2 | import PiPo from "/utils/PiPo.js"; |
| 3 | import Move from "/utils/Move.js"; |
| 4 | |
| 5 | export default class AllmateRules extends ChessRules { |
| 6 | |
| 7 | static get Options() { |
| 8 | return { |
| 9 | select: C.Options.select, |
| 10 | styles: [ |
| 11 | "cylinder", |
| 12 | "madrasi", |
| 13 | "zen" |
| 14 | ] |
| 15 | }; |
| 16 | } |
| 17 | |
| 18 | get hasEnpassant() { |
| 19 | return false; |
| 20 | } |
| 21 | get hasMoveStack() { |
| 22 | return true; |
| 23 | } |
| 24 | |
| 25 | setOtherVariables(fenParsed) { |
| 26 | super.setOtherVariables(fenParsed); |
| 27 | this.curMove = null; |
| 28 | } |
| 29 | |
| 30 | getPotentialMovesFrom(sq) { |
| 31 | // Remove direct captures: |
| 32 | return super.getPotentialMovesFrom(sq) |
| 33 | .filter(m => m.vanish.length == m.appear.length); |
| 34 | } |
| 35 | |
| 36 | // Called "recursively" before a move is played, until no effect |
| 37 | computeNextMove(move) { |
| 38 | if (move.appear.length > 0) |
| 39 | this.curMove = move; |
| 40 | const color = this.turn; |
| 41 | const oppCol = C.GetOppCol(this.turn); |
| 42 | let mv = new Move({ |
| 43 | start: this.curMove.end, |
| 44 | end: this.curMove.end, |
| 45 | appear: [], |
| 46 | vanish: [] |
| 47 | }); |
| 48 | this.playOnBoard(move); |
| 49 | for (let i=0; i<this.size.x; i++) { |
| 50 | for (let j=0; j<this.size.y; j++) { |
| 51 | if (this.getColor(i, j) == oppCol && this.isMated(i, j, color)) { |
| 52 | mv.vanish.push( |
| 53 | new PiPo({x: i, y: j, c: oppCol, p: this.getPiece(i, j)}) |
| 54 | ); |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | this.undoOnBoard(move); |
| 59 | move.next = (mv.vanish.length > 0 ? mv : null); |
| 60 | } |
| 61 | |
| 62 | // is piece on square x,y mated by color? |
| 63 | isMated(x, y, color) { |
| 64 | const myColor = C.GetOppCol(color); |
| 65 | if (!this.underCheck([x, y], color)) |
| 66 | return false; |
| 67 | for (let i=0; i<this.size.x; i++) { |
| 68 | for (let j=0; j<this.size.y; j++) { |
| 69 | if (this.getColor(i, j) == myColor) { |
| 70 | const movesIJ = super.getPotentialMovesFrom([i, j], myColor); |
| 71 | for (let move of movesIJ) { |
| 72 | this.playOnBoard(move); |
| 73 | let testSquare = [x, y]; |
| 74 | if (i == x && j == y) { |
| 75 | // The mated-candidate has moved itself |
| 76 | testSquare = [move.end.x, move.end.y]; } |
| 77 | const res = this.underCheck(testSquare, color); |
| 78 | this.undoOnBoard(move); |
| 79 | if (!res) |
| 80 | return false; |
| 81 | } |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | // No "under check" conditions in castling |
| 89 | getCastleMoves(sq) { |
| 90 | return super.getCastleMoves(sq, null, "castleInCheck"); |
| 91 | } |
| 92 | |
| 93 | filterValid(moves) { |
| 94 | return moves; //TODO?: over-simplification to be fixed later |
| 95 | } |
| 96 | |
| 97 | }; |