| 1 | import ChessRules from "/base_rules.js"; |
| 2 | import GiveawayRules from "/variants/Giveaway/class.js"; |
| 3 | import PiPo from "/utils/PiPo.js"; |
| 4 | import Move from "/utils/Move.js"; |
| 5 | |
| 6 | export default class SuctionRules extends ChessRules { |
| 7 | |
| 8 | static get Options() { |
| 9 | return { |
| 10 | select: C.Options.select, |
| 11 | styles: [ |
| 12 | "balance", |
| 13 | "capture", |
| 14 | "cylinder", |
| 15 | "dark", |
| 16 | "doublemove", |
| 17 | "madrasi", |
| 18 | "progressive", |
| 19 | "teleport" |
| 20 | ] |
| 21 | }; |
| 22 | } |
| 23 | |
| 24 | get pawnPromotions() { |
| 25 | return ['p']; //no promotions |
| 26 | } |
| 27 | |
| 28 | get hasFlags() { |
| 29 | return false; |
| 30 | } |
| 31 | |
| 32 | setOtherVariables(fenParsed) { |
| 33 | super.setOtherVariables(fenParsed); |
| 34 | this.cmove = null; |
| 35 | const cmove_str = fenParsed.cmove; |
| 36 | if (cmove_str != "-") { |
| 37 | this.cmove = { |
| 38 | start: C.SquareToCoords(cmove_str.substr(0, 2)), |
| 39 | end: C.SquareToCoords(cmove_str.substr(2)) |
| 40 | }; |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | genRandInitFen(seed) { |
| 45 | const gr = new GiveawayRules( |
| 46 | {mode: "suicide", options: this.options, genFenOnly: true}); |
| 47 | // Add empty cmove: |
| 48 | return ( |
| 49 | gr.genRandInitFen(seed).slice(0, -17) + '{"enpassant":"-","cmove":"-"}'); |
| 50 | } |
| 51 | |
| 52 | getFen() { |
| 53 | const cmoveFen = !this.cmove |
| 54 | ? "-" |
| 55 | : C.CoordsToSquare(this.cmove.start) + C.CoordsToSquare(this.cmove.end); |
| 56 | return super.getFen().slice(0, -1) + ',"cmove":"' + cmoveFen + '"}'; |
| 57 | } |
| 58 | |
| 59 | getBasicMove([sx, sy], [ex, ey]) { |
| 60 | let move = super.getBasicMove([sx, sy], [ex, ey]); |
| 61 | if (move.vanish.length == 2) { |
| 62 | move.appear.push( |
| 63 | new PiPo({ |
| 64 | x: sx, |
| 65 | y: sy, |
| 66 | c: move.vanish[1].c, |
| 67 | p: move.vanish[1].p |
| 68 | }) |
| 69 | ); |
| 70 | } |
| 71 | return move; |
| 72 | } |
| 73 | |
| 74 | canIplay(x, y) { |
| 75 | return this.getPiece(x, y) != 'k' && super.canIplay(x, y); |
| 76 | } |
| 77 | |
| 78 | // Does m2 un-do m1 ? (to disallow undoing captures) |
| 79 | oppositeMoves(m1, m2) { |
| 80 | return ( |
| 81 | !!m1 && |
| 82 | m2.vanish.length == 2 && |
| 83 | m1.start.x == m2.start.x && |
| 84 | m1.end.x == m2.end.x && |
| 85 | m1.start.y == m2.start.y && |
| 86 | m1.end.y == m2.end.y |
| 87 | ); |
| 88 | } |
| 89 | |
| 90 | filterValid(moves) { |
| 91 | return moves.filter(m => !this.oppositeMoves(this.cmove, m)); |
| 92 | } |
| 93 | |
| 94 | postPlay(move) { |
| 95 | super.postPlay(move); |
| 96 | this.cmove = |
| 97 | (move.vanish.length == 2 ? {start: move.start, end: move.end} : null); |
| 98 | } |
| 99 | |
| 100 | atLeastOneMove() { |
| 101 | return true; |
| 102 | } |
| 103 | |
| 104 | getCurrentScore() { |
| 105 | const color = this.turn; |
| 106 | const kingPos = super.searchKingPos(color); |
| 107 | if (color == "w" && kingPos[0] == 0) return "0-1"; |
| 108 | if (color == "b" && kingPos[0] == this.size.x - 1) return "1-0"; |
| 109 | // King is not on the opposite edge: game not over |
| 110 | return "*"; |
| 111 | } |
| 112 | |
| 113 | }; |