variants/Alapo/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 AlapoRules extends ChessRules {
   7
   8   static get Options() {
   9     return {
  10       select: C.Options.select,
  11       styles: C.Options.styles.filter(s => s != "teleport")
  12     };
  13   }
  14
  15   get hasFlags() {
  16     return false;
  17   }
  18   get hasEnpassant() {
  19     return false;
  20   }
  21
  22   getSvgChessboard() {
  23     let board = super.getSvgChessboard().slice(0, -6);
  24     // Add lines to delimitate goals
  25     board += `
  26       <line x1="0" y1="10" x2="60" y2="10" stroke="black" stroke-width="0.1"/>
  27       <line x1="0" y1="50" x2="60" y2="50" stroke="black" stroke-width="0.1"/>
  28       </svg>`;
  29     return board;
  30   }
  31
  32   genRandInitBaseFen() {
  33     const s = FenUtil.setupPieces(
  34       ['r', 'b', 'q', 'q', 'b', 'r'],
  35       {
  36         randomness: this.options["randomness"],
  37         diffCol: ['b']
  38       }
  39     );
  40     const piece2pawn = {
  41       r: 't',
  42       q: 's',
  43       b: 'c'
  44     };
  45     const fen = (
  46       s.b.join("") + "/" +
  47       s.b.map(p => piece2pawn[p]).join("") +
  48       "/6/6/" +
  49       s.w.map(p => piece2pawn[p].toUpperCase()).join("") + "/" +
  50       s.w.join("").toUpperCase()
  51     );
  52     return { fen: fen, o: {} };
  53   }
  54
  55   // Triangles are rotated from opponent viewpoint (=> suffix "_inv")
  56   pieces(color, x, y) {
  57     const allSpecs = super.pieces(color, x, y);
  58     return {
  59       'r': allSpecs['r'],
  60       'q': allSpecs['q'],
  61       'b': Object.assign({}, allSpecs['b'],
  62         {"class": "bishop" + (this.playerColor != color ? "_inv" : "")}),
  63       's': { //"square"
  64         "class": "babyrook",
  65         both: [
  66           {
  67             steps: [[0, 1], [0, -1], [1, 0], [-1, 0]],
  68             range: 1
  69           }
  70         ]
  71       },
  72       'c': { //"circle"
  73         "class": "babyqueen",
  74         both: [
  75           {
  76             steps: [
  77               [0, 1], [0, -1], [1, 0], [-1, 0],
  78               [1, 1], [1, -1], [-1, 1], [-1, -1]
  79             ],
  80             range: 1
  81           }
  82         ]
  83       },
  84       't': { //"triangle"
  85         "class": "babybishop" + (this.playerColor != color ? "_inv" : ""),
  86         both: [
  87           {
  88             steps: [[1, 1], [1, -1], [-1, 1], [-1, -1]],
  89             range: 1
  90           }
  91         ]
  92       }
  93     };
  94   }
  95
  96   get size() {
  97     return {
  98       x: 6,
  99       y: 6
 100     };
 101   }
 102
 103   filterValid(moves) {
 104     return moves;
 105   }
 106
 107   getCurrentScore() {
 108     // Try both colors (to detect potential suicides)
 109     let won = {};
 110     for (let c of ['w', 'b']) {
 111       const oppCol = C.GetOppCol(c);
 112       const goal = (c == 'w' ? 0 : 5);
 113       won[c] = this.board[goal].some((b,j) => {
 114         return (
 115           this.getColor(goal, j) == c &&
 116           !this.findCapturesOn(
 117             [goal, j],
 118             {
 119               one: true,
 120               oppCol: oppCol,
 121               segments: this.options["cylinder"]
 122             }
 123           )
 124         );
 125       });
 126     }
 127     if (won['w'] && won['b'])
 128       return "?"; //no idea who won, not relevant anyway :)
 129     return (won['w'] ? "1-0" : (won['b'] ? "0-1" : "*"));
 130   }
 131
 132 };