variants/Giveaway/class.js

   1 import ChessRules from "/base_rules.js";
   2 import {ArrayFun} from "/utils/array.js";
   3 import {Random} from "/utils/alea.js";
   4 import {FenUtil} from "/utils/setupPieces.js";
   5
   6 export default class GiveawayRules extends ChessRules {
   7
   8   static get Options() {
   9     return {
  10       select: [
  11         {
  12           label: "Mode",
  13           variable: "mode",
  14           defaut: "suicide",
  15           options: [
  16             {label: "Suicide", value: "suicide"},
  17             {label: "Losers", value: "losers"}
  18           ]
  19         }
  20       ].concat(C.Options.select),
  21       input: C.Options.input.filter(i => i.variable == "pawnfall"),
  22       styles: [
  23         "atomic", "cannibal", "cylinder", "dark",
  24         "madrasi", "rifle", "teleport", "zen"
  25       ]
  26     };
  27   }
  28
  29   get hasFlags() {
  30     return this.options["mode"] == "losers";
  31   }
  32
  33   get pawnPromotions() {
  34     let res = ['q', 'r', 'n', 'b'];
  35     if (this.options["mode"] == "suicide")
  36       res.push('k');
  37     return res;
  38   }
  39
  40   genRandInitBaseFen() {
  41     let setupOpts = {
  42       randomness: this.options["randomness"],
  43       diffCol: ['b']
  44     };
  45     if (this.options["mode"] == "losers") {
  46       setupOpts["between"] = [{p1: 'k', p2: 'r'}];
  47       setupOpts["flags"] = ['r'];
  48     }
  49     const s = FenUtil.setupPieces(
  50       ['r', 'n', 'b', 'q', 'k', 'b', 'n', 'r'], setupOpts);
  51     return {
  52       fen: s.b.join("") + "/pppppppp/8/8/8/8/PPPPPPPP/" +
  53            s.w.join("").toUpperCase(),
  54       o: {flags: s.flags}
  55     };
  56   }
  57
  58   constructor(o) {
  59     o.options["capture"] = true;
  60     super(o);
  61   }
  62
  63   underCheck(square_s, oppCol) {
  64     if (this.options["mode"] == "suicide")
  65       return false;
  66     return super.underCheck(square_s, oppCol);
  67   }
  68
  69   getCurrentScore() {
  70     if (this.atLeastOneMove(this.turn))
  71       return "*";
  72     // No valid move: the side who cannot move wins
  73     return (this.turn == "w" ? "1-0" : "0-1");
  74   }
  75
  76 };