variants/Dice/class.js

   1 import ChessRules from "/base_rules.js";
   2 import {Random} from "/utils/alea.js";
   3
   4 export default class DiceRules extends ChessRules {
   5
   6   static get Options() {
   7     let res = C.Options;
   8     res.select["defaut"] = 2;
   9     return {
  10       select: res.select,
  11       input: [
  12         {
  13           label: "Biased alea",
  14           variable: "biased",
  15           type: "checkbox",
  16           defaut: true
  17         },
  18         {
  19           label: "Falling pawn",
  20           variable: "pawnfall",
  21           type: "checkbox",
  22           defaut: false
  23         }
  24       ],
  25       styles: [
  26         "atomic",
  27         "capture",
  28         "crazyhouse",
  29         "cylinder",
  30         "madrasi",
  31         "recycle",
  32         "rifle",
  33         "zen"
  34       ]
  35     };
  36   }
  37
  38   getPartFen(o) {
  39     let toplay = '';
  40     if (o.init) {
  41       let canMove = (this.options["biased"]
  42         ? Array(8).fill('p').concat(Array(2).fill('n'))
  43         : ['p', 'n']);
  44       toplay = canMove[Random.randInt(canMove.length)];
  45     }
  46     return Object.assign(
  47       { toplay: (o.init ? toplay : this.getRandomPiece(this.turn)) },
  48       super.getPartFen(o)
  49     );
  50   }
  51
  52   constructor(o) {
  53     super(o);
  54     this.afterPlay = (move_s, newTurn, ops) => {
  55       // Movestack contains only one move:
  56       move_s[0].toplay = this.getRandomPiece(this.turn);
  57       this.toplay = move_s[0].toplay;
  58       this.displayMessage(move_s[0].toplay,
  59                           C.GetOppTurn(move_s[0].appear[0].c));
  60       o.afterPlay(move_s, newTurn, ops);
  61     };
  62   }
  63
  64   static get PieceToUnicode() {
  65     return {
  66       'K': "&#9812;",
  67       'Q': "&#9813;",
  68       'R': "&#9814;",
  69       'B': "&#9815;",
  70       'N': "&#9816;",
  71       'P': "&#9817;",
  72       'k': "&#9818;",
  73       'q': "&#9819;",
  74       'r': "&#9820;",
  75       'b': "&#9821;",
  76       'n': "&#9822;",
  77       'p': "&#9823;"
  78     };
  79   }
  80
  81   displayMessage(piece, color) {
  82     if (color == 'w')
  83       piece = piece.toUpperCase();
  84     super.displayMessage(this.message,
  85       '<span>to play:</span> ' +
  86       '<span class="symb">' + V.PieceToUnicode[piece] + '</span>'
  87     );
  88   }
  89
  90   setOtherVariables(fenParsed) {
  91     super.setOtherVariables(fenParsed);
  92     this.toplay = fenParsed.toplay;
  93     this.message = document.createElement("div");
  94     C.AddClass_es(this.message, "piece-text");
  95     let container = document.getElementById(this.containerId);
  96     container.appendChild(this.message);
  97     this.displayMessage(this.toplay, fenParsed.turn);
  98   }
  99
 100   getRandomPiece(color) {
 101     // Find pieces which can move and roll a (biased) dice
 102     let canMove = [];
 103     for (let i=0; i<8; i++) {
 104       for (let j=0; j<8; j++) {
 105         if (this.board[i][j] != "" && this.getColor(i, j) == color) {
 106           const piece = this.getPiece(i, j);
 107           if (this.findDestSquares([i, j], {one: true}))
 108             canMove.push(piece);
 109         }
 110       }
 111     }
 112     if (!this.options["biased"])
 113       canMove = [...new Set(canMove)];
 114     return canMove[Random.randInt(canMove.length)];
 115   }
 116
 117   postProcessPotentialMoves(moves) {
 118     return super.postProcessPotentialMoves(moves).filter(m => {
 119       return (
 120         (m.appear.length >= 1 && m.appear[0].p == this.toplay) ||
 121         (m.vanish.length >= 1 && m.vanish[0].p == this.toplay)
 122       );
 123     });
 124   }
 125
 126   filterValid(moves) {
 127     return moves;
 128   }
 129
 130   playReceivedMove(moves, callback) {
 131     this.toplay = moves[0].toplay; //only one move
 132     this.displayMessage(this.toplay, C.GetOppTurn(moves[0].appear[0].c));
 133     super.playReceivedMove(moves, callback);
 134   }
 135
 136 };