| 1 | class AliceRules extends ChessRUles |
| 2 | { |
| 3 | // TODO: more general double correspondance normal <--> alice |
| 4 | static get ALICE_PIECES() |
| 5 | { |
| 6 | return ['s','t','u','c','o','l']; //king is 'l' |
| 7 | } |
| 8 | |
| 9 | static getPpath(b) |
| 10 | { |
| 11 | return (this.ALICE_PIECES.includes(b[1]) ? "Alice/" : "") + b; |
| 12 | } |
| 13 | |
| 14 | getPotentialMovesFrom([x,y]) |
| 15 | { |
| 16 | // Build board1+board2 from complete board |
| 17 | let board1 = doubleArray(sizeX, sizeY, ""); |
| 18 | let board2 = doubleArray(sizeX, sizeY, ""); |
| 19 | const [sizeX,sizeY] = variantRules.size; |
| 20 | for (let i=0; i<sizeX; i++) |
| 21 | { |
| 22 | for (let j=0; j<sizeY; j++) |
| 23 | { |
| 24 | const piece = this.getPiece(i,j); |
| 25 | if (this.ALICE_PIECES.includes(piece)) |
| 26 | board2[i][j] = this.board[i][j]; |
| 27 | else |
| 28 | board1[i][j] = this.board[i][j]; |
| 29 | } |
| 30 | } |
| 31 | let saveBoard = JSON.parse(JSON.stringify(this.board)); |
| 32 | |
| 33 | // Search valid moves on both boards |
| 34 | let moves = []; |
| 35 | this.board = board1; |
| 36 | |
| 37 | |
| 38 | this.board = board2; |
| 39 | |
| 40 | this.board = saveBoard; |
| 41 | |
| 42 | // Finally filter impossible moves |
| 43 | |
| 44 | return moves; |
| 45 | } |
| 46 | |
| 47 | underCheck(move) |
| 48 | { |
| 49 | // 1 where is king ? if board1 then build it, if board2 then build it. then check. |
| 50 | const color = this.turn; |
| 51 | this.play(move); |
| 52 | let res = this.isAttacked(this.kingPos[color], this.getOppCol(color)); |
| 53 | this.undo(move); |
| 54 | return res; |
| 55 | } |
| 56 | |
| 57 | // TODO also: |
| 58 | //getCheckSquares(move) |
| 59 | |
| 60 | // TODO: pieces change side! |
| 61 | static PlayOnBoard(board, move) |
| 62 | { |
| 63 | for (let psq of move.vanish) |
| 64 | board[psq.x][psq.y] = VariantRules.EMPTY; |
| 65 | for (let psq of move.appear) |
| 66 | board[psq.x][psq.y] = psq.c + psq.p; |
| 67 | } |
| 68 | static UndoOnBoard(board, move) |
| 69 | { |
| 70 | for (let psq of move.appear) |
| 71 | board[psq.x][psq.y] = VariantRules.EMPTY; |
| 72 | for (let psq of move.vanish) |
| 73 | board[psq.x][psq.y] = psq.c + psq.p; |
| 74 | } |
| 75 | |
| 76 | checkGameEnd() |
| 77 | { |
| 78 | const color = this.turn; |
| 79 | // No valid move: stalemate or checkmate? |
| 80 | // TODO: here also, need to build the board with king on it |
| 81 | if (!this.isAttacked(this.kingPos[color], this.getOppCol(color))) |
| 82 | return "1/2"; |
| 83 | // OK, checkmate |
| 84 | return color == "w" ? "0-1" : "1-0"; |
| 85 | } |
| 86 | } |