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 = {diffCol: ['b']};
  42     if (this.options["mode"] == "losers") {
  43       setupOpts["between"] = ['k', 'r'];
  44       setupOpts["flags"] = ['r'];
  45     }
  46     const s = FenUtil.setupPieces(
  47       ['r', 'n', 'b', 'q', 'k', 'b', 'n', 'r'], setupOpts);
  48     return {
  49       fen: s.b.join("") + "/pppppppp/8/8/8/8/PPPPPPPP/" +
  50            s.w.join("").toUpperCase(),
  51       o: {flags: s.flags}
  52     };
  53   }
  54
  55   constructor(o) {
  56     o.options["capture"] = true;
  57     super(o);
  58   }
  59
  60   underCheck(square_s, oppCol) {
  61     if (this.options["mode"] == "suicide")
  62       return false;
  63     return super.underCheck(square_s, oppCol);
  64   }
  65
  66   getCurrentScore() {
  67     if (this.atLeastOneMove(this.turn))
  68       return "*";
  69     // No valid move: the side who cannot move wins
  70     return (this.turn == "w" ? "1-0" : "0-1");
  71   }
  72
  73 };