From: Benjamin Auder Date: Mon, 26 Nov 2018 15:20:05 +0000 (+0100) Subject: Early draft of Wildebeest + Grand X-Git-Url: https://git.auder.net/doc/html/%7B%7B%20asset%28%27mixstore/css/current/%3C?a=commitdiff_plain;h=a37076f1ac8f4c19d9b34a60cbe89df86b88fa0b;p=vchess.git Early draft of Wildebeest + Grand --- diff --git a/public/javascripts/base_rules.js b/public/javascripts/base_rules.js index 9cfab5ae..f466624d 100644 --- a/public/javascripts/base_rules.js +++ b/public/javascripts/base_rules.js @@ -171,7 +171,6 @@ class ChessRules 'r': [ [-1,0],[1,0],[0,-1],[0,1] ], 'n': [ [-1,-2],[-1,2],[1,-2],[1,2],[-2,-1],[-2,1],[2,-1],[2,1] ], 'b': [ [-1,-1],[-1,1],[1,-1],[1,1] ], - 'q': [ [-1,0],[1,0],[0,-1],[0,1],[-1,-1],[-1,1],[1,-1],[1,1] ] }; } @@ -379,14 +378,17 @@ class ChessRules // What are the queen moves from square x,y ? getPotentialQueenMoves(sq) { - return this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.QUEEN]); + const V = VariantRules; + return this.getSlideNJumpMoves(sq, V.steps[V.ROOK].concat(V.steps[V.BISHOP])); } // What are the king moves from square x,y ? getPotentialKingMoves(sq) { + const V = VariantRules; // Initialize with normal moves - let moves = this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.QUEEN], "oneStep"); + let moves = this.getSlideNJumpMoves(sq, + V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep"); return moves.concat(this.getCastleMoves(sq)); } @@ -586,15 +588,17 @@ class ChessRules // Is square x,y attacked by queens of color c ? isAttackedByQueen(sq, colors) { - return this.isAttackedBySlideNJump(sq, colors, - VariantRules.QUEEN, VariantRules.steps[VariantRules.QUEEN]); + const V = VariantRules; + return this.isAttackedBySlideNJump(sq, colors, V.QUEEN, + V.steps[V.ROOK].concat(V.steps[V.BISHOP])); } // Is square x,y attacked by king of color c ? isAttackedByKing(sq, colors) { - return this.isAttackedBySlideNJump(sq, colors, - VariantRules.KING, VariantRules.steps[VariantRules.QUEEN], "oneStep"); + const V = VariantRules; + return this.isAttackedBySlideNJump(sq, colors, V.KING, + V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep"); } // Generic method for non-pawn pieces ("sliding or jumping"): is x,y attacked by piece != color ? diff --git a/public/javascripts/variants/Antiking.js b/public/javascripts/variants/Antiking.js index 53e55188..f8c7465a 100644 --- a/public/javascripts/variants/Antiking.js +++ b/public/javascripts/variants/Antiking.js @@ -59,7 +59,9 @@ class AntikingRules extends ChessRules getPotentialAntikingMoves(sq) { - return this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.QUEEN], "oneStep"); + const V = VariantRules; + return this.getSlideNJumpMoves(sq, + V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep"); } isAttacked(sq, colors) @@ -69,18 +71,20 @@ class AntikingRules extends ChessRules isAttackedByKing([x,y], colors) { - if (this.getPiece(x,y) == VariantRules.ANTIKING) + const V = VariantRules; + if (this.getPiece(x,y) == V.ANTIKING) return false; //antiking is not attacked by king - return this.isAttackedBySlideNJump([x,y], colors, - VariantRules.KING, VariantRules.steps[VariantRules.QUEEN], "oneStep"); + return this.isAttackedBySlideNJump([x,y], colors, V.KING, + V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep"); } isAttackedByAntiking([x,y], colors) { - if (this.getPiece(x,y) == VariantRules.KING) + const V = VariantRules; + if (this.getPiece(x,y) == V.KING) return false; //king is not attacked by antiking - return this.isAttackedBySlideNJump([x,y], colors, - VariantRules.ANTIKING, VariantRules.steps[VariantRules.QUEEN], "oneStep"); + return this.isAttackedBySlideNJump([x,y], colors, V.ANTIKING, + V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep"); } underCheck(move) diff --git a/public/javascripts/variants/Atomic.js b/public/javascripts/variants/Atomic.js index 2b7b1ac3..b86e7822 100644 --- a/public/javascripts/variants/Atomic.js +++ b/public/javascripts/variants/Atomic.js @@ -30,10 +30,11 @@ class AtomicRules extends ChessRules getPotentialKingMoves([x,y]) { + const V = VariantRules; // King cannot capture: let moves = []; - let [sizeX,sizeY] = VariantRules.size; - const steps = VariantRules.steps[VariantRules.QUEEN]; + let [sizeX,sizeY] = V.size; + const steps = V.steps[V.ROOK].concat(V.steps[V.BISHOP]); for (let step of steps) { var i = x + step[0]; diff --git a/public/javascripts/variants/Grand.js b/public/javascripts/variants/Grand.js new file mode 100644 index 00000000..63108dee --- /dev/null +++ b/public/javascripts/variants/Grand.js @@ -0,0 +1,93 @@ +//https://www.chessvariants.com/large.dir/freeling.html +class GrandRules extends ChessRules +{ + static getPpath(b) + { + const V = VariantRules; + return ([V.CAMEL,V.WILDEBEEST].includes(b[1]) ? "Grand/" : "") + b; + } + + static get MARSHALL() { return 'm'; } //rook+knight + static get CARDINAL() { return 'c'; } //bishop+knight + + // ------> pas les règles exactes, on démarre en 2 avec 1,2 ou 3 cases + enPassant comme Wildebeest +// TODO: IN epSquares (return array), not return singleton. Easy. Adapt +// just here for now... + getEpSquare(move) + { + const [sx,sy,ex] = [move.start.x,move.start.y,move.end.x]; + if (this.getPiece(sx,sy) == VariantRules.PAWN && Math.abs(sx - ex) == 2) + { + return { + x: (sx + ex)/2, + y: sy + }; + } + return undefined; //default + } + + getPotentialMovesFrom([x,y]) + { + switch (this.getPiece(x,y)) + { + case VariantRules.MARSHALL: + return this.getPotentialMarshallMoves([x,y]); + case VariantRules.CARDINAL: + return this.getPotentialCardinalMoves([x,y]); + default: + return super.getPotentialMovesFrom([x,y]) + } + } + + // TODO: quite many changes! Especially promotions, only to friendly pieces already captured. ==> keep track of captured material in initVariables()...... + getPotentialPawnMoves([x,y]) + { + } + + getPotentialMarshallMoves(sq) + { + const V = VariantRules; + return this.getSlideNJumpMoves(sq, V.steps[V.ROOK]).concat( + this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT], "oneStep")); + } + + getPotentialCardinalMoves(sq) + { + const V = VariantRules; + return this.getSlideNJumpMoves(sq, V.steps[V.BISHOP]).concat( + this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT], "oneStep")); + } + + isAttacked(sq, colors) + { + return (super.isAttacked(sq, colors) + || this.isAttackedByMarshall(sq, colors) + || this.isAttackedByCardinal(sq, colors); + } + + isAttackedByMarshall(sq, colors) + { + const V = VariantRules; + return this.isAttackedBySlideNJump(sq, colors, V.MARSHALL, V.steps[V.ROOK]) + || this.isAttackedBySlideNJump(sq, colors, V.MARSHALL, V.steps[V.KNIGHT], "oneStep"); + } + + isAttackedByCardinal(sq, colors) + { + const V = VariantRules; + return this.isAttackedBySlideNJump(sq, colors, V.CARDINAL, V.steps[V.BISHOP]) + || this.isAttackedBySlideNJump(sq, colors, V.CARDINAL, V.steps[V.KNIGHT], "oneStep"); + } + + static get VALUES() { + return Object.assign( + ChessRules.VALUES, + {'c': 5, 'm': 7} //experimental + ); + } + + // TODO: + static GenRandInitFen() + { + } +} diff --git a/public/javascripts/variants/Wildebeest.js b/public/javascripts/variants/Wildebeest.js new file mode 100644 index 00000000..5f706cf1 --- /dev/null +++ b/public/javascripts/variants/Wildebeest.js @@ -0,0 +1,211 @@ +//https://www.chessvariants.com/large.dir/wildebeest.html +class GrandRules extends ChessRules +{ + static getPpath(b) + { + const V = VariantRules; + return ([V.CAMEL,V.WILDEBEEST].includes(b[1]) ? "Wildebeest/" : "") + b; + } + + static get CAMEL() { return 'c'; } + static get WILDEBEEST() { return 'w'; } + + static get steps() { + return Object.assign( + ChessRules.steps, //add camel moves: + {'c': [ [-3,-1],[-3,1],[-1,-3],[-1,3],[1,-3],[1,3],[3,-1],[3,1] ]} + ); + } + +// TODO: IN epSquares (return array), not return singleton. Easy. Adapt +// just here for now... + getEpSquare(move) + { + const [sx,sy,ex] = [move.start.x,move.start.y,move.end.x]; + if (this.getPiece(sx,sy) == VariantRules.PAWN && Math.abs(sx - ex) == 2) + { + return { + x: (sx + ex)/2, + y: sy + }; + } + return undefined; //default + } + + getPotentialMovesFrom([x,y]) + { + switch (this.getPiece(x,y)) + { + case VariantRules.CAMEL: + return this.getPotentialCamelMoves([x,y]); + case VariantRules.WILDEBEEST: + return this.getPotentialWildebeestMoves([x,y]); + default: + return super.getPotentialMovesFrom([x,y]) + } + } + + // TODO: several changes (promote to queen or wildebeest) + getPotentialPawnMoves([x,y]) + { + const color = this.turn; + let moves = []; + const V = VariantRules; + const [sizeX,sizeY] = VariantRules.size; + const shift = (color == "w" ? -1 : 1); + const firstRank = (color == 'w' ? sizeY-1 : 0); + const startRank = (color == "w" ? sizeY-2 : 1); + const lastRank = (color == "w" ? 0 : sizeY-1); + + if (x+shift >= 0 && x+shift < sizeX && x+shift != lastRank) + { + // Normal moves + if (this.board[x+shift][y] == V.EMPTY) + { + moves.push(this.getBasicMove([x,y], [x+shift,y])); + // Next condition because variants with pawns on 1st rank generally allow them to jump + if ([startRank,firstRank].includes(x) && this.board[x+2*shift][y] == V.EMPTY) + { + // Two squares jump + moves.push(this.getBasicMove([x,y], [x+2*shift,y])); + } + } + // Captures + if (y>0 && this.canTake([x,y], [x+shift,y-1]) && this.board[x+shift][y-1] != V.EMPTY) + moves.push(this.getBasicMove([x,y], [x+shift,y-1])); + if (y { + // Normal move + if (this.board[x+shift][y] == V.EMPTY) + moves.push(this.getBasicMove([x,y], [x+shift,y], {c:color,p:p})); + // Captures + if (y>0 && this.canTake([x,y], [x+shift,y-1]) && this.board[x+shift][y-1] != V.EMPTY) + moves.push(this.getBasicMove([x,y], [x+shift,y-1], {c:color,p:p})); + if (y0 ? this.epSquares[Lep-1] : undefined; + if (!!epSquare && epSquare.x == x+shift && Math.abs(epSquare.y - y) == 1) + { + let epStep = epSquare.y - y; + var enpassantMove = this.getBasicMove([x,y], [x+shift,y+epStep]); + enpassantMove.vanish.push({ + x: x, + y: y+epStep, + p: 'p', + c: this.getColor(x,y+epStep) + }); + moves.push(enpassantMove); + } + + return moves; + } + + getPotentialCamelMoves(sq) + { + return this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.CAMEL], "oneStep"); + } + + getPotentialWildebeestMoves(sq) + { + const V = VariantRules; + return this.getSlideNJumpMoves(sq, V.steps[V.KNIGHT].concat(V.steps[V.CAMEL])); + } + + // TODO: getCastleMoves, generalize a bit to include castleSquares as static variables + // ==> but this won't be exactly Wildebeest... think about it. + + // TODO: also generalize lastRank ==> DO NOT HARDCODE 7 !!! + + isAttacked(sq, colors) + { + return (super.isAttacked(sq, colors) + || this.isAttackedByCamel(sq, colors) + || this.isAttackedByWildebeest(sq, colors); + } + + isAttackedByCamel(sq, colors) + { + return this.isAttackedBySlideNJump(sq, colors, + VariantRules.CAMEL, VariantRules.steps[VariantRules.CAMEL]); + } + + isAttackedByWildebeest(sq, colors) + { + const V = VariantRules; + return this.isAttackedBySlideNJump(sq, colors, V.WILDEBEEST, + V.steps[V.KNIGHT].concat(V.steps[V.CAMEL])); + } + + static get VALUES() { + return Object.assign( + ChessRules.VALUES, + {'c': 3, 'w': 7} //experimental + ); + } + + // TODO: + static GenRandInitFen() + { + let pieces = [new Array(8), new Array(8)]; + // Shuffle pieces on first and last rank + for (let c = 0; c <= 1; c++) + { + let positions = _.range(8); + + // Get random squares for bishops + let randIndex = 2 * _.random(3); + let bishop1Pos = positions[randIndex]; + // The second bishop must be on a square of different color + let randIndex_tmp = 2 * _.random(3) + 1; + let bishop2Pos = positions[randIndex_tmp]; + // Remove chosen squares + positions.splice(Math.max(randIndex,randIndex_tmp), 1); + positions.splice(Math.min(randIndex,randIndex_tmp), 1); + + // Get random squares for knights + randIndex = _.random(5); + let knight1Pos = positions[randIndex]; + positions.splice(randIndex, 1); + randIndex = _.random(4); + let knight2Pos = positions[randIndex]; + positions.splice(randIndex, 1); + + // Get random square for queen + randIndex = _.random(3); + let queenPos = positions[randIndex]; + positions.splice(randIndex, 1); + + // Rooks and king positions are now fixed, because of the ordering rook-king-rook + let rook1Pos = positions[0]; + let kingPos = positions[1]; + let rook2Pos = positions[2]; + + // Finally put the shuffled pieces in the board array + pieces[c][rook1Pos] = 'r'; + pieces[c][knight1Pos] = 'n'; + pieces[c][bishop1Pos] = 'b'; + pieces[c][queenPos] = 'q'; + pieces[c][kingPos] = 'k'; + pieces[c][bishop2Pos] = 'b'; + pieces[c][knight2Pos] = 'n'; + pieces[c][rook2Pos] = 'r'; + } + let fen = pieces[0].join("") + + "/pppppppp/8/8/8/8/PPPPPPPP/" + + pieces[1].join("").toUpperCase() + + " 1111"; //add flags + return fen; + } +} diff --git a/public/javascripts/variants/Zen.js b/public/javascripts/variants/Zen.js index b7f229c3..17c922d2 100644 --- a/public/javascripts/variants/Zen.js +++ b/public/javascripts/variants/Zen.js @@ -157,7 +157,8 @@ class ZenRules extends ChessRules getPotentialKnightMoves(sq) { - let noCaptures = this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.KNIGHT], "oneStep"); + let noCaptures = this.getSlideNJumpMoves(sq, + VariantRules.steps[VariantRules.KNIGHT], "oneStep"); let captures = this.findCaptures(sq); return noCaptures.concat(captures); } @@ -171,15 +172,18 @@ class ZenRules extends ChessRules getPotentialQueenMoves(sq) { - let noCaptures = this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.QUEEN]); + const V = VariantRules; + let noCaptures = this.getSlideNJumpMoves(sq, V.steps[V.ROOK.concat(V.steps[V.BISHOP])]); let captures = this.findCaptures(sq); return noCaptures.concat(captures); } getPotentialKingMoves(sq) { + const V = VariantRules; // Initialize with normal moves - let noCaptures = this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.QUEEN], "oneStep"); + let noCaptures = this.getSlideNJumpMoves(sq, + V.steps[V.ROOK].concat(V.steps[V.BISHOP]), "oneStep"); let captures = this.findCaptures(sq); return noCaptures.concat(captures).concat(this.getCastleMoves(sq)); } diff --git a/variants.js b/variants.js index 7aef900d..175c4269 100644 --- a/variants.js +++ b/variants.js @@ -6,8 +6,8 @@ module.exports = [ { "name" : "Antiking", "description" : "Keep antiking in check" }, { "name" : "Magnetic", "description" : "Laws of attraction" }, { "name" : "Alice", "description" : "Both sides of the mirror" }, -// { "name" : "Grand", "description" : "Big board" }, -// { "name" : "Wildebeest", "description" : "Balanced sliders & leapers" }, + { "name" : "Grand", "description" : "Big board" }, + { "name" : "Wildebeest", "description" : "Balanced sliders & leapers" }, // { "name" : "Loser", "description" : "Lose all pieces" }, // { "name" : "Crazyhouse", "description" : "Captures reborn" }, // { "name" : "Switching", "description" : "Exchange pieces positions" },