| 1 | import { ChessRules } from "@/base_rules"; |
| 2 | import { OrdaRules } from "@/variants/Orda"; |
| 3 | import { ArrayFun } from "@/utils/array"; |
| 4 | import { randInt } from "@/utils/alea"; |
| 5 | |
| 6 | export class OrdamirrorRules extends OrdaRules { |
| 7 | |
| 8 | static get PawnSpecs() { |
| 9 | return Object.assign( |
| 10 | {}, |
| 11 | ChessRules.PawnSpecs, |
| 12 | { promotions: [V.LANCER, V.ARCHER, V.KHESHIG, V.FALCON] } |
| 13 | ); |
| 14 | } |
| 15 | |
| 16 | static get HasFlags() { |
| 17 | return false; |
| 18 | } |
| 19 | |
| 20 | static get HasEnpassant() { |
| 21 | return false; |
| 22 | } |
| 23 | |
| 24 | getPpath(b) { |
| 25 | return "Orda/" + b; |
| 26 | } |
| 27 | |
| 28 | static GenRandInitFen(options) { |
| 29 | if (options.randomness == 0) |
| 30 | return "lhafkahl/8/pppppppp/8/8/PPPPPPPP/8/LHAFKAHL w 0 ah -"; |
| 31 | |
| 32 | let pieces = { w: new Array(8), b: new Array(8) }; |
| 33 | // Shuffle pieces on first (and last rank if randomness == 2) |
| 34 | for (let c of ["w", "b"]) { |
| 35 | if (c == 'b' && options.randomness == 1) { |
| 36 | pieces['b'] = pieces['w']; |
| 37 | break; |
| 38 | } |
| 39 | |
| 40 | let positions = ArrayFun.range(8); |
| 41 | |
| 42 | let randIndex = 2 * randInt(4); |
| 43 | const bishop1Pos = positions[randIndex]; |
| 44 | let randIndex_tmp = 2 * randInt(4) + 1; |
| 45 | const bishop2Pos = positions[randIndex_tmp]; |
| 46 | positions.splice(Math.max(randIndex, randIndex_tmp), 1); |
| 47 | positions.splice(Math.min(randIndex, randIndex_tmp), 1); |
| 48 | |
| 49 | randIndex = randInt(6); |
| 50 | const knight1Pos = positions[randIndex]; |
| 51 | positions.splice(randIndex, 1); |
| 52 | randIndex = randInt(5); |
| 53 | const knight2Pos = positions[randIndex]; |
| 54 | positions.splice(randIndex, 1); |
| 55 | |
| 56 | randIndex = randInt(4); |
| 57 | const queenPos = positions[randIndex]; |
| 58 | positions.splice(randIndex, 1); |
| 59 | |
| 60 | const rook1Pos = positions[0]; |
| 61 | const kingPos = positions[1]; |
| 62 | const rook2Pos = positions[2]; |
| 63 | |
| 64 | pieces[c][rook1Pos] = "l"; |
| 65 | pieces[c][knight1Pos] = "h"; |
| 66 | pieces[c][bishop1Pos] = "a"; |
| 67 | pieces[c][queenPos] = "f"; |
| 68 | pieces[c][kingPos] = "k"; |
| 69 | pieces[c][bishop2Pos] = "a"; |
| 70 | pieces[c][knight2Pos] = "h"; |
| 71 | pieces[c][rook2Pos] = "l"; |
| 72 | } |
| 73 | return ( |
| 74 | pieces["b"].join("") + |
| 75 | "/8/pppppppp/8/8/PPPPPPPP/8/" + |
| 76 | pieces["w"].join("").toUpperCase() + |
| 77 | " w 0" |
| 78 | ); |
| 79 | } |
| 80 | |
| 81 | static get FALCON() { |
| 82 | return 'f'; |
| 83 | } |
| 84 | |
| 85 | static get PIECES() { |
| 86 | return [V.LANCER, V.ARCHER, V.KHESHIG, V.FALCON, V.KING]; |
| 87 | } |
| 88 | |
| 89 | getPotentialMovesFrom(sq) { |
| 90 | switch (this.getPiece(sq[0], sq[1])) { |
| 91 | case V.PAWN: |
| 92 | return super.getPotentialPawnMoves(sq); |
| 93 | case V.LANCER: |
| 94 | return super.getPotentialLancerMoves(sq); |
| 95 | case V.ARCHER: |
| 96 | return super.getPotentialArcherMoves(sq); |
| 97 | case V.KHESHIG: |
| 98 | return super.getPotentialKheshigMoves(sq); |
| 99 | case V.FALCON: |
| 100 | return this.getPotentialFalconMoves(sq); |
| 101 | case V.KING: |
| 102 | return super.getPotentialKingMoves(sq) |
| 103 | } |
| 104 | return []; //never reached |
| 105 | } |
| 106 | |
| 107 | getPotentialFalconMoves(sq) { |
| 108 | const onlyMoves = this.getSlideNJumpMoves( |
| 109 | sq, V.steps[V.ROOK].concat(V.steps[V.BISHOP]), null, { onlyMove: true }); |
| 110 | const onlyTakes = this.getSlideNJumpMoves( |
| 111 | sq, V.steps[V.KNIGHT], "oneStep", { onlyTake: true }); |
| 112 | return onlyMoves.concat(onlyTakes); |
| 113 | } |
| 114 | |
| 115 | isAttacked(sq, color) { |
| 116 | return ( |
| 117 | super.isAttackedByPawn(sq, color) || |
| 118 | super.isAttackedByLancer(sq, color) || |
| 119 | super.isAttackedByKheshig(sq, color) || |
| 120 | super.isAttackedByArcher(sq, color) || |
| 121 | this.isAttackedByFalcon(sq, color) || |
| 122 | super.isAttackedByKing(sq, color) |
| 123 | ); |
| 124 | } |
| 125 | |
| 126 | isAttackedByFalcon(sq, color) { |
| 127 | return this.isAttackedBySlideNJump( |
| 128 | sq, color, V.FALCON, V.steps[V.KNIGHT], 1); |
| 129 | } |
| 130 | |
| 131 | static get VALUES() { |
| 132 | return { |
| 133 | p: 1, |
| 134 | f: 7, |
| 135 | a: 4, |
| 136 | h: 7, |
| 137 | l: 4, |
| 138 | k: 1000 |
| 139 | }; |
| 140 | } |
| 141 | |
| 142 | }; |