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 { fen: baseFen.fen.replace("rnbqkbnr/pppppppp", "4k3/8"), o: {} };
  30   }
  31
  32   getPartFen(o) {
  33     let parts = super.getPartFen(o);
  34     parts["flags"] = parts["flags"].substr(0, 2) + "88";
  35     return parts;
  36   }
  37
  38   initReserves() {
  39     this.reserve = { b: { p: 1 } };
  40   }
  41
  42   // Just do not update any reserve (infinite supply)
  43   updateReserve() {}
  44
  45   getCurrentScore(move) {
  46     const score = super.getCurrentScore(move);
  47     if (score != "*")
  48       return score;
  49     // Check pawns connection:
  50     for (let i = 0; i < this.size.x; i++) {
  51       for (let j = 0; j < this.size.y; j++) {
  52         if (
  53           this.board[i][j] != "" &&
  54           this.getColor(i, j) == 'b' &&
  55           this.getPiece(i, j) == 'p'
  56         ) {
  57           // Exploration "rightward + downward" is enough
  58           for (let step of [[1, 0], [0, 1], [1, 1], [-1, 1]]) {
  59             let [ii, jj] = [i + step[0], j + step[1]];
  60             let kounter = 1;
  61             while (
  62               this.onBoard(ii, jj) &&
  63               this.board[ii][jj] != "" &&
  64               this.getColor(ii, jj) == 'b' &&
  65               this.getPiece(ii, jj) == 'p'
  66             ) {
  67               kounter++;
  68               ii += step[0];
  69               jj += step[1];
  70             }
  71             if (kounter == 4)
  72               return "0-1";
  73           }
  74         }
  75       }
  76     }
  77     return "*";
  78   }
  79
  80 };