variants/Align4/class.js

   1 import ChessRules from "/base_rules.js";
   2
   3 export default class Align4Rules extends ChessRules {
   4
   5   static get Options() {
   6     return {
   7       select: [{
   8         label: "Randomness",
   9         variable: "randomness",
  10         defaut: 0,
  11         options: [
  12           {label: "Deterministic", value: 0},
  13           {label: "Random", value: 1}
  14         ]
  15       }],
  16       styles: ["atomic", "capture", "cylinder"]
  17     };
  18   }
  19
  20   get hasReserve() {
  21     return true;
  22   }
  23   get hasReserveFen() {
  24     return false;
  25   }
  26
  27   genRandInitBaseFen() {
  28     let baseFen = super.genRandInitBaseFen();
  29     return {
  30       fen: baseFen.fen.replace("rnbqkbnr/pppppppp", "4k3/8"),
  31       o: {flags: baseFen.o.flags.substr(0, 2) + "88"}
  32     };
  33   }
  34
  35   initReserves() {
  36     this.reserve = { b: { p: 1 } };
  37   }
  38
  39   // Just do not update any reserve (infinite supply)
  40   updateReserve() {}
  41
  42   getCurrentScore(move_s) {
  43     const score = super.getCurrentScore(move_s);
  44     if (score != "*")
  45       return score;
  46     // Check pawns connection:
  47     for (let i = 0; i < this.size.x; i++) {
  48       for (let j = 0; j < this.size.y; j++) {
  49         if (
  50           this.board[i][j] != "" &&
  51           this.getColor(i, j) == 'b' &&
  52           this.getPiece(i, j) == 'p'
  53         ) {
  54           // Exploration "rightward + downward" is enough
  55           for (let step of [[1, 0], [0, 1], [1, 1], [-1, 1]]) {
  56             let [ii, jj] = [i + step[0], j + step[1]];
  57             let kounter = 1;
  58             while (
  59               this.onBoard(ii, jj) &&
  60               this.board[ii][jj] != "" &&
  61               this.getColor(ii, jj) == 'b' &&
  62               this.getPiece(ii, jj) == 'p'
  63             ) {
  64               kounter++;
  65               ii += step[0];
  66               jj += step[1];
  67             }
  68             if (kounter == 4)
  69               return "0-1";
  70           }
  71         }
  72       }
  73     }
  74     return "*";
  75   }
  76
  77 };