| 1 | import ChessRules from "/base_rules.js"; |
| 2 | import AbstractAntikingRules from "/variants/AbstractAntiking.js"; |
| 3 | |
| 4 | export class Antiking1Rules extends AbstractAntikingRules { |
| 5 | |
| 6 | static get Options() { |
| 7 | return { |
| 8 | styles: [ |
| 9 | "atomic", |
| 10 | "balance", |
| 11 | "cannibal", |
| 12 | "capture", |
| 13 | "crazyhouse", |
| 14 | "doublemove", |
| 15 | "madrasi", |
| 16 | "progressive", |
| 17 | "recycle", |
| 18 | "rifle", |
| 19 | "teleport", |
| 20 | "zen" |
| 21 | ] |
| 22 | }; |
| 23 | } |
| 24 | |
| 25 | get hasCastle() { |
| 26 | return false; |
| 27 | } |
| 28 | |
| 29 | pieces(color, x, y) { |
| 30 | const pawnShift = (color == "w" ? -1 : 1); |
| 31 | let res = super.pieces(color, x, y); |
| 32 | res['p'].moves = [ |
| 33 | { |
| 34 | steps: [[pawnShift, 1], [pawnShift, -1]], |
| 35 | range: 1 |
| 36 | } |
| 37 | ]; |
| 38 | res['p'].attack = [ |
| 39 | { |
| 40 | steps: [[pawnShift, 0]], |
| 41 | range: 1 |
| 42 | } |
| 43 | ]; |
| 44 | return res; |
| 45 | } |
| 46 | |
| 47 | genRandInitFen() { |
| 48 | // Always deterministic setup |
| 49 | return ( |
| 50 | '2prbkqA/2p1nnbr/2pppppp/8/8/PPPPPP2/RBNN1P2/aQKBRP2 w 0 ' + |
| 51 | '{"flags":"KAka"}' |
| 52 | ); |
| 53 | } |
| 54 | |
| 55 | // (Anti)King flags at 1 (true) if they can knight-jump |
| 56 | setFlags(fenflags) { |
| 57 | this.kingFlags = { w: {}, b: {} }; |
| 58 | for (let i=0; i<fenFlags.length; i++) { |
| 59 | const white = fenFlags.charCodeAt(i) <= 90; |
| 60 | const curChar = fenFlags.charCodeAt(i).toLowerCase(); |
| 61 | this.kingFlags[white ? 'w' : 'b'][curChar] = true; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | getFlagsFen() { |
| 66 | return ( |
| 67 | Array.prototype.concat.apply( |
| 68 | ['w', 'b'].map(c => Object.keys(this.kingFlags[c])) |
| 69 | ).join("") |
| 70 | ); |
| 71 | } |
| 72 | |
| 73 | getPotentialMovesFrom([x, y]) { |
| 74 | const color = this.turn; |
| 75 | let moves = super.getPotentialMovesFrom([x, y]); |
| 76 | if (this.kingFlags[color][piece]) { |
| 77 | // Allow knight jump (king or antiking) |
| 78 | const knightMoves = super.getPotentialMovesOf('n', [x, y]); |
| 79 | // Remove captures (TODO: could be done more efficiently...) |
| 80 | moves = moves.concat(knightJumps.filter(m => m.vanish.length == 1)); |
| 81 | } |
| 82 | return moves; |
| 83 | } |
| 84 | |
| 85 | prePlay(move) { |
| 86 | super.prePlay(move); |
| 87 | // Update king+antiking flags |
| 88 | const piece = move.vanish[0].p; |
| 89 | if (this.isKing(0, 0, piece)) |
| 90 | delete this.kingFlags[move.vanish[0].c][piece]; |
| 91 | } |
| 92 | |
| 93 | }; |