public/javascripts/variants/Crazyhouse.js

   1 class CrazyhouseRules extends ChessRules
   2 {
   3     initVariables(fen)
   4     {
   5         super.initVariables();
   6         // Also init reserves (used by the interface to show landing pieces)
   7         const V = VariantRules;
   8         this.reserve =
   9         {
  10             "w":
  11             {
  12                 [V.PAWN]: 0,
  13                 [V.ROOK]: 0,
  14                 [V.KNIGHT]: 0,
  15                 [V.BISHOP]: 0,
  16                 [V.QUEEN]: 0,
  17             },
  18             "b":
  19             {
  20                 [V.PAWN]: 0,
  21                 [V.ROOK]: 0,
  22                 [V.KNIGHT]: 0,
  23                 [V.BISHOP]: 0,
  24                 [V.QUEEN]: 0,
  25             }
  26         };
  27         // It may be a continuation: adjust numbers of pieces according to captures + rebirths
  28         // TODO
  29     }
  30
  31     // Used by the interface:
  32     getReservePieces(color)
  33     {
  34         return {
  35             [color+V.PAWN]: this.reserve[color][V.PAWN],
  36             [color+V.ROOK]: this.reserve[color][V.ROOK],
  37             [color+V.KNIGHT]: this.reserve[color][V.KNIGHT],
  38             [color+V.BISHOP]: this.reserve[color][V.BISHOP],
  39             [color+V.QUEEN]: this.reserve[color][V.QUEEN],
  40         };
  41     }
  42
  43     getPotentialMovesFrom([x,y])
  44     {
  45         let moves = super.getPotentialMovesFrom([x,y]);
  46         // Add landing moves:
  47         const color = this.turn;
  48         Object.keys(this.reserve[color]).forEach(p => {
  49
  50             moves.push(...); //concat... just appear
  51         });
  52         return moves;
  53     }
  54
  55     // TODO: condition "if this is reserve" --> special square !!! coordinates ??
  56     getPossibleMovesFrom(sq)
  57     {
  58         // Assuming color is right (already checked)
  59         return this.filterValid( this.getPotentialMovesFrom(sq) );
  60     }
  61
  62     // TODO: add reserve moves
  63     getAllValidMoves()
  64     {
  65
  66     }
  67
  68     // TODO: also
  69     atLeastOneMove()
  70     {
  71
  72     }
  73
  74     // TODO: update reserve
  75     updateVariables(move)
  76     {
  77     }
  78     unupdateVariables(move)
  79     {
  80     }
  81
  82     static get SEARCH_DEPTH() { return 2; } //high branching factor
  83
  84     getNotation(move)
  85     {
  86         if (move.vanish.length > 0)
  87             return super.getNotation(move);
  88         // Rebirth:
  89         const piece =
  90             (move.appear[0].p != VariantRules.PAWN ? move.appear.p.toUpperCase() : "");
  91         const finalSquare =
  92             String.fromCharCode(97 + move.end.y) + (VariantRules.size[0]-move.end.x);
  93         return piece + "@" + finalSquare;
  94     }
  95 }