| 1 | import ChessRules from "/base_rules.js"; |
| 2 | import { ArrayFun } from "/utils/array.js"; |
| 3 | import { Random } from "/utils/alea.js"; |
| 4 | |
| 5 | export default class GiveawayRules extends ChessRules { |
| 6 | |
| 7 | static get Options() { |
| 8 | return { |
| 9 | select: [ |
| 10 | { |
| 11 | label: "Mode", |
| 12 | variable: "mode", |
| 13 | defaut: "suicide", |
| 14 | options: [ |
| 15 | {label: "Suicide", value: "suicide"}, |
| 16 | {label: "Losers", value: "losers"} |
| 17 | ] |
| 18 | } |
| 19 | ].concat(C.Options.select), |
| 20 | input: C.Options.input.filter(i => i.variable == "pawnfall"), |
| 21 | styles: [ |
| 22 | "atomic", "cannibal", "cylinder", "dark", |
| 23 | "madrasi", "rifle", "teleport", "zen" |
| 24 | ] |
| 25 | }; |
| 26 | } |
| 27 | |
| 28 | get hasFlags() { |
| 29 | return this.options["mode"] == "losers"; |
| 30 | } |
| 31 | |
| 32 | get pawnPromotions() { |
| 33 | let res = ['q', 'r', 'n', 'b']; |
| 34 | if (this.options["mode"] == "suicide") |
| 35 | res.push('k'); |
| 36 | return res; |
| 37 | } |
| 38 | |
| 39 | genRandInitFen(seed) { |
| 40 | if (this.options["randomness"] == 0) { |
| 41 | return ( |
| 42 | 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w 0 {"enpassant":"-"}' |
| 43 | ); |
| 44 | } |
| 45 | |
| 46 | Random.setSeed(seed); |
| 47 | let pieces = { w: new Array(8), b: new Array(8) }; |
| 48 | for (let c of ["w", "b"]) { |
| 49 | if (c == 'b' && this.options["randomness"] == 1) { |
| 50 | pieces['b'] = pieces['w']; |
| 51 | break; |
| 52 | } |
| 53 | |
| 54 | // Get random squares for every piece, totally freely |
| 55 | let positions = Random.shuffle(ArrayFun.range(8)); |
| 56 | const composition = ['b', 'b', 'r', 'r', 'n', 'n', 'k', 'q']; |
| 57 | const rem2 = positions[0] % 2; |
| 58 | if (rem2 == positions[1] % 2) { |
| 59 | // Fix bishops (on different colors) |
| 60 | for (let i=2; i<8; i++) { |
| 61 | if (positions[i] % 2 != rem2) { |
| 62 | [positions[1], positions[i]] = [positions[i], positions[1]]; |
| 63 | break; |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | for (let i = 0; i < 8; i++) |
| 68 | pieces[c][positions[i]] = composition[i]; |
| 69 | } |
| 70 | return ( |
| 71 | pieces["b"].join("") + |
| 72 | "/pppppppp/8/8/8/8/PPPPPPPP/" + |
| 73 | pieces["w"].join("").toUpperCase() + |
| 74 | // En-passant allowed, but no flags |
| 75 | ' w 0 {"enpassant":"-"}' |
| 76 | ); |
| 77 | } |
| 78 | |
| 79 | constructor(o) { |
| 80 | o.options["capture"] = true; |
| 81 | super(o); |
| 82 | } |
| 83 | |
| 84 | underCheck([x, y], oppCol) { |
| 85 | if (this.options["mode"] == "suicide") |
| 86 | return false; |
| 87 | return super.underCheck([x, y], oppCol); |
| 88 | } |
| 89 | |
| 90 | getCurrentScore() { |
| 91 | if (this.atLeastOneMove()) return "*"; |
| 92 | // No valid move: the side who cannot move wins |
| 93 | return (this.turn == "w" ? "1-0" : "0-1"); |
| 94 | } |
| 95 | |
| 96 | }; |