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 =
  34       FenUtil.setupPieces(['r', 'b', 'q', 'q', 'b', 'r'], {diffCol: ['b']});
  35     const piece2pawn = {
  36       r: 't',
  37       q: 's',
  38       b: 'c'
  39     };
  40     const fen = (
  41       s.b.join("") + "/" +
  42       s.b.map(p => piece2pawn[p]).join("") +
  43       "/6/6/" +
  44       s.w.map(p => piece2pawn[p].toUpperCase()).join("") + "/" +
  45       s.w.join("").toUpperCase()
  46     );
  47     return { fen: fen, o: {} };
  48   }
  49
  50   // Triangles are rotated from opponent viewpoint (=> suffix "_inv")
  51   pieces(color, x, y) {
  52     const allSpecs = super.pieces(color, x, y);
  53     return {
  54       'r': allSpecs['r'],
  55       'q': allSpecs['q'],
  56       'b': Object.assign({}, allSpecs['b'],
  57         {"class": "bishop" + (this.playerColor != color ? "_inv" : "")}),
  58       's': { //"square"
  59         "class": "babyrook",
  60         both: [
  61           {
  62             steps: [[0, 1], [0, -1], [1, 0], [-1, 0]],
  63             range: 1
  64           }
  65         ]
  66       },
  67       'c': { //"circle"
  68         "class": "babyqueen",
  69         both: [
  70           {
  71             steps: [
  72               [0, 1], [0, -1], [1, 0], [-1, 0],
  73               [1, 1], [1, -1], [-1, 1], [-1, -1]
  74             ],
  75             range: 1
  76           }
  77         ]
  78       },
  79       't': { //"triangle"
  80         "class": "babybishop" + (this.playerColor != color ? "_inv" : ""),
  81         both: [
  82           {
  83             steps: [[1, 1], [1, -1], [-1, 1], [-1, -1]],
  84             range: 1
  85           }
  86         ]
  87       }
  88     };
  89   }
  90
  91   get size() {
  92     return {
  93       x: 6,
  94       y: 6
  95     };
  96   }
  97
  98   filterValid(moves) {
  99     return moves;
 100   }
 101
 102   getCurrentScore() {
 103     // Try both colors (to detect potential suicides)
 104     let won = {};
 105     for (let c of ['w', 'b']) {
 106       const oppCol = C.GetOppCol(c);
 107       const goal = (c == 'w' ? 0 : 5);
 108       won[c] = this.board[goal].some((b,j) => {
 109         return (
 110           this.getColor(goal, j) == c &&
 111           !this.findCapturesOn(
 112             [goal, j],
 113             {
 114               one: true,
 115               oppCol: oppCol,
 116               segments: this.options["cylinder"]
 117             }
 118           )
 119         );
 120       });
 121     }
 122     if (won['w'] && won['b'])
 123       return "?"; //no idea who won, not relevant anyway :)
 124     return (won['w'] ? "1-0" : (won['b'] ? "0-1" : "*"));
 125   }
 126
 127 };