| 1 | class AntikingRules extends ChessRules |
| 2 | { |
| 3 | // Path to pieces |
| 4 | static getPpath(b) |
| 5 | { |
| 6 | return b[1]=='a' ? "Antiking/"+b : b; |
| 7 | } |
| 8 | |
| 9 | static get ANTIKING() { return 'a'; } |
| 10 | |
| 11 | initVariables(fen) |
| 12 | { |
| 13 | super.initVariables(fen); |
| 14 | this.antikingPos = {'w':[-1,-1], 'b':[-1,-1]}; |
| 15 | const position = fen.split(" ")[0].split("/"); |
| 16 | for (let i=0; i<position.length; i++) |
| 17 | { |
| 18 | let k = 0; |
| 19 | for (let j=0; j<position[i].length; j++) |
| 20 | { |
| 21 | switch (position[i].charAt(j)) |
| 22 | { |
| 23 | case 'a': |
| 24 | this.antikingPos['b'] = [i,k]; |
| 25 | break; |
| 26 | case 'A': |
| 27 | this.antikingPos['w'] = [i,k]; |
| 28 | break; |
| 29 | default: |
| 30 | let num = parseInt(position[i].charAt(j)); |
| 31 | if (!isNaN(num)) |
| 32 | k += (num-1); |
| 33 | } |
| 34 | k++; |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | canTake([x1,y1], [x2,y2]) |
| 40 | { |
| 41 | const piece1 = this.getPiece(x1,y1); |
| 42 | const piece2 = this.getPiece(x2,y2); |
| 43 | const color1 = this.getColor(x1,y1); |
| 44 | const color2 = this.getColor(x2,y2); |
| 45 | return !["a","A"].includes(piece2) && |
| 46 | ((piece1 != "a" && color1 != color2) || (piece1 == "a" && color1 == color2)); |
| 47 | } |
| 48 | |
| 49 | getPotentialMovesFrom([x,y]) |
| 50 | { |
| 51 | switch (this.getPiece(x,y)) |
| 52 | { |
| 53 | case VariantRules.ANTIKING: |
| 54 | return this.getPotentialAntikingMoves([x,y]); |
| 55 | default: |
| 56 | return super.getPotentialMovesFrom([x,y]); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | getPotentialAntikingMoves(sq) |
| 61 | { |
| 62 | return this.getSlideNJumpMoves(sq, VariantRules.steps[VariantRules.QUEEN], "oneStep"); |
| 63 | } |
| 64 | |
| 65 | isAttacked(sq, colors) |
| 66 | { |
| 67 | return (super.isAttacked(sq, colors) || this.isAttackedByAntiking(sq, colors)); |
| 68 | } |
| 69 | |
| 70 | isAttackedByKing([x,y], colors) |
| 71 | { |
| 72 | if (this.getPiece(x,y) == VariantRules.ANTIKING) |
| 73 | return false; //antiking is not attacked by king |
| 74 | return this.isAttackedBySlideNJump([x,y], colors, |
| 75 | VariantRules.KING, VariantRules.steps[VariantRules.QUEEN], "oneStep"); |
| 76 | } |
| 77 | |
| 78 | isAttackedByAntiking([x,y], colors) |
| 79 | { |
| 80 | if (this.getPiece(x,y) == VariantRules.KING) |
| 81 | return false; //king is not attacked by antiking |
| 82 | return this.isAttackedBySlideNJump([x,y], colors, |
| 83 | VariantRules.ANTIKING, VariantRules.steps[VariantRules.QUEEN], "oneStep"); |
| 84 | } |
| 85 | |
| 86 | underCheck(move) |
| 87 | { |
| 88 | const c = this.turn; |
| 89 | const oppCol = this.getOppCol(c); |
| 90 | this.play(move) |
| 91 | let res = this.isAttacked(this.kingPos[c], oppCol) |
| 92 | || !this.isAttacked(this.antikingPos[c], oppCol); |
| 93 | this.undo(move); |
| 94 | return res; |
| 95 | } |
| 96 | |
| 97 | getCheckSquares(move) |
| 98 | { |
| 99 | let res = super.getCheckSquares(move); |
| 100 | this.play(move); |
| 101 | const c = this.turn; |
| 102 | if (!this.isAttacked(this.antikingPos[c], this.getOppCol(c))) |
| 103 | res.push(JSON.parse(JSON.stringify(this.antikingPos[c]))); |
| 104 | this.undo(move); |
| 105 | return res; |
| 106 | } |
| 107 | |
| 108 | updateVariables(move) |
| 109 | { |
| 110 | super.updateVariables(move); |
| 111 | const piece = this.getPiece(move.start.x,move.start.y); |
| 112 | const c = this.getColor(move.start.x,move.start.y); |
| 113 | // Update antiking position |
| 114 | if (piece == VariantRules.ANTIKING) |
| 115 | { |
| 116 | this.antikingPos[c][0] = move.appear[0].x; |
| 117 | this.antikingPos[c][1] = move.appear[0].y; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | unupdateVariables(move) |
| 122 | { |
| 123 | super.unupdateVariables(move); |
| 124 | const c = this.getColor(move.start.x,move.start.y); |
| 125 | if (this.getPiece(move.start.x,move.start.y) == VariantRules.ANTIKING) |
| 126 | this.antikingPos[c] = [move.start.x, move.start.y]; |
| 127 | } |
| 128 | |
| 129 | checkGameEnd() |
| 130 | { |
| 131 | const color = this.turn; |
| 132 | const oppCol = this.getOppCol(color); |
| 133 | if (!this.isAttacked(this.kingPos[color], oppCol) |
| 134 | && this.isAttacked(this.antikingPos[color], oppCol)) |
| 135 | { |
| 136 | return "1/2"; |
| 137 | } |
| 138 | return color == "w" ? "0-1" : "1-0"; |
| 139 | } |
| 140 | |
| 141 | // Pieces values (TODO: use Object.assign() + ChessRules.VALUES ?) |
| 142 | static get VALUES() { |
| 143 | return { |
| 144 | 'p': 1, |
| 145 | 'r': 5, |
| 146 | 'n': 3, |
| 147 | 'b': 3, |
| 148 | 'q': 9, |
| 149 | 'k': 1000, |
| 150 | 'a': 1000 |
| 151 | }; |
| 152 | } |
| 153 | |
| 154 | static GenRandInitFen() |
| 155 | { |
| 156 | let randFen = ChessRules.GenRandInitFen(); |
| 157 | // Black side |
| 158 | let antikingPos = _.random(7); |
| 159 | let ranks23 = "pppppppp/" + (antikingPos>0?antikingPos:"") + "A" + (antikingPos<7?7-antikingPos:""); |
| 160 | randFen = randFen.replace("pppppppp/8", ranks23); |
| 161 | // White side |
| 162 | antikingPos = _.random(7); |
| 163 | ranks23 = (antikingPos>0?antikingPos:"") + "a" + (antikingPos<7?7-antikingPos:"") + "/PPPPPPPP"; |
| 164 | randFen = randFen.replace("8/PPPPPPPP", ranks23); |
| 165 | return randFen; |
| 166 | } |
| 167 | } |