variants/Capablanca/class.js

   1 import ChessRules from "/base_rules.js";
   2
   3 export default class CapablancaRules extends ChessRules {
   4
   5   get pawnPromotions() {
   6     return ['q', 'e', 's', 'r', 'n', 'b'];
   7   }
   8
   9   pieces(color, x, y) {
  10     let newPieces = {
  11       'e': {
  12         "class": "empress",
  13         both: [
  14           {
  15             steps: [
  16               [1, 0], [-1, 0], [0, 1], [0, -1]
  17             ]
  18           },
  19           {
  20             steps: [
  21               [1, 2], [1, -2], [-1, 2], [-1, -2],
  22               [2, 1], [-2, 1], [2, -1], [-2, -1]
  23             ],
  24             range: 1
  25           }
  26         ]
  27       },
  28       's': {
  29         "class": "princess",
  30         both: [
  31           {
  32             steps: [
  33               [1, 1], [1, -1], [-1, 1], [-1, -1]
  34             ]
  35           },
  36           {
  37             steps: [
  38               [1, 2], [1, -2], [-1, 2], [-1, -2],
  39               [2, 1], [-2, 1], [2, -1], [-2, -1]
  40             ],
  41             range: 1
  42           }
  43         ]
  44       }
  45     };
  46     return Object.assign(newPieces, super.pieces(color, x, y));
  47   }
  48
  49   get size() {
  50     return {x: 8, y: 10};
  51   }
  52
  53   genRandInitBaseFen() {
  54     const s = FenUtil.setupPieces(
  55       ['r', 'n', 's', 'b', 'q', 'k', 'b', 'e', 'n', 'r'],
  56       {
  57         randomness: this.options["randomness"],
  58         between: {p1: 'k', p2: 'r'},
  59         diffCol: ['b'],
  60         flags: ['r']
  61       }
  62     );
  63     return {
  64       fen: s.b.join("") + "/pppppppppp/91/91/91/91/PPPPPPPPPP/" +
  65            s.w.join("").toUpperCase(),
  66       o: {flags: s.flags}
  67     };
  68   }
  69
  70 };