X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=public%2Fjavascripts%2Fvariants%2FAlice.js;h=b286bf6679cda027acd8fc12caad5a23c83e5829;hb=9106c77bf4f1d56ad855d4ffbb93f945065d7fac;hp=9a7cefa0a344267b51b0e8f4100023444db95241;hpb=a0f5dbaac2a9c028aa0ca2559d157b34aeafd3c9;p=vchess.git diff --git a/public/javascripts/variants/Alice.js b/public/javascripts/variants/Alice.js index 9a7cefa0..b286bf66 100644 --- a/public/javascripts/variants/Alice.js +++ b/public/javascripts/variants/Alice.js @@ -1,3 +1,4 @@ +// NOTE: alternative implementation, probably cleaner = use only 1 board class AliceRules extends ChessRules { static get ALICE_PIECES() @@ -60,29 +61,33 @@ class AliceRules extends ChessRules } } + // Return the (standard) color+piece notation at a square for a board + getSquareOccupation(i, j, mirrorSide) + { + const piece = this.getPiece(i,j); + const V = VariantRules; + if (mirrorSide==1 && Object.keys(V.ALICE_CODES).includes(piece)) + return this.board[i][j]; + else if (mirrorSide==2 && Object.keys(V.ALICE_PIECES).includes(piece)) + return this.getColor(i,j) + V.ALICE_PIECES[piece]; + return ""; + } + // Build board of the given (mirror)side getSideBoard(mirrorSide) { - const V = VariantRules; // Build corresponding board from complete board - const [sizeX,sizeY] = V.size; + const [sizeX,sizeY] = VariantRules.size; let sideBoard = doubleArray(sizeX, sizeY, ""); for (let i=0; i Should be OK as is. getPotentialMovesFrom([x,y], sideBoard) { const pieces = Object.keys(VariantRules.ALICE_CODES); @@ -99,14 +104,12 @@ class AliceRules extends ChessRules let res = moves.filter(m => { if (m.appear.length == 2) //castle { - // If appear[i] not in vanish array, then must be empty square on other board - m.appear.forEach(psq => { - if (this.board[psq.x][psq.y] != VariantRules.EMPTY && - ![m.vanish[0].y,m.vanish[1].y].includes(psq.y)) - { + // appear[i] must be an empty square on the other board + for (let psq of m.appear) + { + if (this.getSquareOccupation(psq.x,psq.y,3-mirrorSide) != VariantRules.EMPTY) return false; - } - }); + } } else if (this.board[m.end.x][m.end.y] != VariantRules.EMPTY) { @@ -150,17 +153,12 @@ class AliceRules extends ChessRules return res; } - // NOTE: alternative implementation, recompute sideBoard's in this function - filterValid(moves, sideBoard) + filterValid(moves) { if (moves.length == 0) return []; - const pieces = Object.keys(VariantRules.ALICE_CODES); - return moves.filter(m => { - // WARNING: for underCheck(), we need the sideBoard of the arrival world ! - const mirrorSide = (pieces.includes(this.getPiece(m.start.x,m.start.y)) ? 2 : 1); - return !this.underCheck(m, !!sideBoard ? sideBoard[mirrorSide-1] : null); - }); + let sideBoard = [this.getSideBoard(1), this.getSideBoard(2)]; + return moves.filter(m => { return !this.underCheck(m, sideBoard); }); } getAllValidMoves() @@ -186,18 +184,51 @@ class AliceRules extends ChessRules return this.filterValid(potentialMoves, sideBoard); } - underCheck(move, sideBoard) + // Play on sideboards [TODO: only one sideBoard required] + playSide(move, sideBoard) + { + const pieces = Object.keys(VariantRules.ALICE_CODES); + move.vanish.forEach(psq => { + const mirrorSide = (pieces.includes(psq.p) ? 1 : 2); + sideBoard[mirrorSide-1][psq.x][psq.y] = VariantRules.EMPTY; + }); + move.appear.forEach(psq => { + const mirrorSide = (pieces.includes(psq.p) ? 1 : 2); + const piece = (mirrorSide == 1 ? psq.p : VariantRules.ALICE_PIECES[psq.p]); + sideBoard[mirrorSide-1][psq.x][psq.y] = psq.c + piece; + if (piece == VariantRules.KING) + this.kingPos[psq.c] = [psq.x,psq.y]; + }); + } + + // Undo on sideboards + undoSide(move, sideBoard) { - const color = this.turn; - this.play(move); const pieces = Object.keys(VariantRules.ALICE_CODES); + move.appear.forEach(psq => { + const mirrorSide = (pieces.includes(psq.p) ? 1 : 2); + sideBoard[mirrorSide-1][psq.x][psq.y] = VariantRules.EMPTY; + }); + move.vanish.forEach(psq => { + const mirrorSide = (pieces.includes(psq.p) ? 1 : 2); + const piece = (mirrorSide == 1 ? psq.p : VariantRules.ALICE_PIECES[psq.p]); + sideBoard[mirrorSide-1][psq.x][psq.y] = psq.c + piece; + if (piece == VariantRules.KING) + this.kingPos[psq.c] = [psq.x,psq.y]; + }); + } + + underCheck(move, sideBoard) //sideBoard arg always provided + { + const color = this.turn; + this.playSide(move, sideBoard); //no need to track flags const kp = this.kingPos[color]; - const mirrorSide = (pieces.includes(this.getPiece(kp[0],kp[1])) ? 1 : 2); + const mirrorSide = sideBoard[0][kp[0]][kp[1]] != VariantRules.EMPTY ? 1 : 2; let saveBoard = this.board; - this.board = sideBoard || this.getSideBoard(mirrorSide); - let res = this.isAttacked(this.kingPos[color], this.getOppCol(color)); + this.board = sideBoard[mirrorSide-1]; + let res = this.isAttacked(kp, [this.getOppCol(color)]); this.board = saveBoard; - this.undo(move); + this.undoSide(move, sideBoard); return res; } @@ -211,7 +242,7 @@ class AliceRules extends ChessRules let sideBoard = this.getSideBoard(mirrorSide); let saveBoard = this.board; this.board = sideBoard; - let res = this.isAttacked(this.kingPos[color], this.getOppCol(color)) + let res = this.isAttacked(this.kingPos[color], [this.getOppCol(color)]) ? [ JSON.parse(JSON.stringify(this.kingPos[color])) ] : [ ]; this.board = saveBoard; @@ -251,7 +282,7 @@ class AliceRules extends ChessRules let saveBoard = this.board; this.board = sideBoard; let res = "*"; - if (!this.isAttacked(this.kingPos[color], this.getOppCol(color))) + if (!this.isAttacked(this.kingPos[color], [this.getOppCol(color)])) res = "1/2"; else res = (color == "w" ? "0-1" : "1-0");