variants/Capablanca/class.js

   1 import ChessRules from "/base_rules.js";
   2 import {FenUtil} from "/utils/setupPieces.js";
   3
   4 export default class CapablancaRules extends ChessRules {
   5
   6   get pawnPromotions() {
   7     return ['q', 'e', 's', 'r', 'n', 'b'];
   8   }
   9
  10   pieces(color, x, y) {
  11     let newPieces = {
  12       'e': {
  13         "class": "empress",
  14         both: [
  15           {
  16             steps: [
  17               [1, 0], [-1, 0], [0, 1], [0, -1]
  18             ]
  19           },
  20           {
  21             steps: [
  22               [1, 2], [1, -2], [-1, 2], [-1, -2],
  23               [2, 1], [-2, 1], [2, -1], [-2, -1]
  24             ],
  25             range: 1
  26           }
  27         ]
  28       },
  29       's': {
  30         "class": "princess",
  31         both: [
  32           {
  33             steps: [
  34               [1, 1], [1, -1], [-1, 1], [-1, -1]
  35             ]
  36           },
  37           {
  38             steps: [
  39               [1, 2], [1, -2], [-1, 2], [-1, -2],
  40               [2, 1], [-2, 1], [2, -1], [-2, -1]
  41             ],
  42             range: 1
  43           }
  44         ]
  45       }
  46     };
  47     return Object.assign(newPieces, super.pieces(color, x, y));
  48   }
  49
  50   get size() {
  51     return {
  52       x: 8,
  53       y: 10,
  54       ratio: 1.25
  55     };
  56   }
  57
  58   genRandInitBaseFen() {
  59     const s = FenUtil.setupPieces(
  60       ['r', 'n', 's', 'b', 'q', 'k', 'b', 'e', 'n', 'r'],
  61       {
  62         randomness: this.options["randomness"],
  63         between: {p1: 'k', p2: 'r'},
  64         diffCol: ['b'],
  65         flags: ['r']
  66       }
  67     );
  68     return {
  69       fen: s.b.join("") + "/pppppppppp/91/91/91/91/PPPPPPPPPP/" +
  70            s.w.join("").toUpperCase(),
  71       o: {flags: s.flags}
  72     };
  73   }
  74
  75 };