[vchess.git] / client / src / variants / Cwda.js

import { ChessRules } from "@/base_rules";

export class CwdaRules extends ChessRules {

  static get Options() {
    return {
      select: ChessRules.Options.select.concat([
        {
          label: "Army 1",
          variable: "army1",
          defaut: 'C',
          options: [
            { label: "Colorbound Clobberers", value: 'C' },
            { label: "Nutty Knights", value: 'N' },
            { label: "Remarkable Rookies", value: 'R' },
            { label: "Fide", value: 'F' }
          ]
        },
        {
          label: "Army 2",
          variable: "army2",
          defaut: 'C',
          options: [
            { label: "Colorbound Clobberers", value: 'C' },
            { label: "Nutty Knights", value: 'N' },
            { label: "Remarkable Rookies", value: 'R' },
            { label: "Fide", value: 'F' }
          ]
        }
      ])
    };
  }

  static AbbreviateOptions(opts) {
    return opts["army1"] + opts["army2"];
  }

  static IsValidOptions(opts) {
    // Both armies filled, avoid Fide vs Fide
    return (
      opts.army1 && opts.army2 &&
      (opts.army1 != 'F' || opts.army2 != 'F')
    );
  }

  getPpath(b) {
    return (ChessRules.PIECES.includes(b[1]) ? "" : "Cwda/") + b;
  }

  static get PiecesMap() {
    return {
      // Colorbound Clobberers
      'C': {
        'r': 'd',
        'n': 'w',
        'b': 'f',
        'q': 'c',
        'k': 'k'
      },
      // Nutty Knights
      'N': {
        'r': 'g',
        'n': 'i',
        'b': 't',
        'q': 'l',
        'k': 'k'
      },
      // Remarkable Rookies
      'R': {
        'r': 's',
        'n': 'y',
        'b': 'h',
        'q': 'o',
        'k': 'k'
      }
    };
  }

  static GenRandInitFen(options) {
    const baseFen = ChessRules.GenRandInitFen(options.randomness);
    let blackLine = baseFen.substr(0, 8);
    if (options.army2 != 'F') {
      blackLine = blackLine.split('')
        .map(p => V.PiecesMap[options.army2][p]).join('');
    }
    let whiteLine = baseFen.substr(35, 8);
    if (options.army1 != 'F') {
      whiteLine = whiteLine.split('')
        .map(p => V.PiecesMap[options.army1][p.toLowerCase()])
        .join('').toUpperCase();
    }
    return (
      blackLine + baseFen.substring(8, 35) + whiteLine +
      baseFen.substr(43) + " " + options.army1 + options.army2
    );
  }

  setOtherVariables(fen) {
    super.setOtherVariables(fen);
    const armies = V.ParseFen(fen).armies;
    this.army1 = armies.charAt(0);
    this.army2 = armies.charAt(1);
  }

  static ParseFen(fen) {
    return Object.assign(
      { armies: fen.split(" ")[5] },
      ChessRules.ParseFen(fen)
    );
  }

  static IsGoodFen(fen) {
    if (!ChessRules.IsGoodFen(fen)) return false;
    const armies = V.ParseFen(fen).armies;
    if (!armies || !armies.match(/^[CNRF]{2,2}$/)) return false;
    return true;
  }

  getFen() {
    return super.getFen() + " " + this.army1 + this.army2;
  }

  static get C_ROOK() {
    return 'd';
  }
  static get C_KNIGHT() {
    return 'w';
  }
  static get C_BISHOP() {
    return 'f';
  }
  static get C_QUEEN() {
    return 'c';
  }
  static get N_ROOK() {
    return 'g';
  }
  static get N_KNIGHT() {
    return 'i';
  }
  static get N_BISHOP() {
    return 't';
  }
  static get N_QUEEN() {
    return 'l';
  }
  static get R_ROOK() {
    return 's';
  }
  static get R_KNIGHT() {
    return 'y';
  }
  static get R_BISHOP() {
    return 'h';
  }
  static get R_QUEEN() {
    return 'o';
  }

  static get PIECES() {
    return ChessRules.PIECES.concat(
      [V.C_ROOK, V.C_KNIGHT, V.C_BISHOP, V.C_QUEEN]).concat(
      [V.N_ROOK, V.N_KNIGHT, V.N_BISHOP, V.N_QUEEN]).concat(
      [V.R_ROOK, V.R_KNIGHT, V.R_BISHOP, V.R_QUEEN]);
  }

  getPotentialMovesFrom(sq) {
    switch (this.getPiece(sq[0], sq[1])) {
      case V.C_ROOK: return this.getPotentialC_rookMoves(sq);
      case V.C_KNIGHT: return this.getPotentialC_knightMoves(sq);
      case V.C_BISHOP: return this.getPotentialC_bishopMoves(sq);
      case V.C_QUEEN: return this.getPotentialC_queenMoves(sq);
      case V.N_ROOK: return this.getPotentialN_rookMoves(sq);
      case V.N_KNIGHT: return this.getPotentialN_knightMoves(sq);
      case V.N_BISHOP: return this.getPotentialN_bishopMoves(sq);
      case V.N_QUEEN: return this.getPotentialN_queenMoves(sq);
      case V.R_ROOK: return this.getPotentialR_rookMoves(sq);
      case V.R_KNIGHT: return this.getPotentialR_knightMoves(sq);
      case V.R_BISHOP: return this.getPotentialR_bishopMoves(sq);
      case V.R_QUEEN: return this.getPotentialR_queenMoves(sq);
      case V.PAWN: {
        // Can promote in anything from the two current armies
        let promotions = [];
        for (let army of ["army1", "army2"]) {
          if (army == "army2" && this.army2 == this.army1) break;
          switch (this[army]) {
            case 'C': {
              Array.prototype.push.apply(promotions,
                [V.C_ROOK, V.C_KNIGHT, V.C_BISHOP, V.C_QUEEN]);
              break;
            }
            case 'N': {
              Array.prototype.push.apply(promotions,
                [V.N_ROOK, V.N_KNIGHT, V.N_BISHOP, V.N_QUEEN]);
              break;
            }
            case 'R': {
              Array.prototype.push.apply(promotions,
                [V.R_ROOK, V.R_KNIGHT, V.R_BISHOP, V.R_QUEEN]);
              break;
            }
            case 'F': {
              Array.prototype.push.apply(promotions,
                [V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN]);
              break;
            }
          }
        }
        return super.getPotentialPawnMoves(sq, promotions);
      }
      default: return super.getPotentialMovesFrom(sq);
    }
    return [];
  }

  static get steps() {
    return Object.assign(
      {
        // Dabbabah
        'd': [
          [-2, 0],
          [0, -2],
          [2, 0],
          [0, 2]
        ],
        // Alfil
        'a': [
          [2, 2],
          [2, -2],
          [-2, 2],
          [-2, -2]
        ],
        // Ferz
        'f': [
          [1, 1],
          [1, -1],
          [-1, 1],
          [-1, -1]
        ],
        // Wazir
        'w': [
          [-1, 0],
          [0, -1],
          [1, 0],
          [0, 1]
        ],
        // Threeleaper
        '$3': [
          [-3, 0],
          [0, -3],
          [3, 0],
          [0, 3]
        ],
        // Narrow knight
        '$n': [
          [-2, -1],
          [-2, 1],
          [2, -1],
          [2, 1]
        ]
      },
      ChessRules.steps,
    );
  }

  getPotentialC_rookMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.b).concat(
      this.getSlideNJumpMoves(sq, V.steps.d, 1))
    );
  }

  getPotentialC_knightMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.a, 1).concat(
      this.getSlideNJumpMoves(sq, V.steps.r, 1))
    );
  }

  getPotentialC_bishopMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.d, 1).concat(
      this.getSlideNJumpMoves(sq, V.steps.a, 1)).concat(
      this.getSlideNJumpMoves(sq, V.steps.b, 1))
    );
  }

  getPotentialC_queenMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.b).concat(
        this.getSlideNJumpMoves(sq, V.steps.n, 1))
    );
  }

  getPotentialN_rookMoves(sq) {
    const c = this.turn;
    const rookSteps = [ [0, -1], [0, 1], [c == 'w' ? -1 : 1, 0] ];
    const backward = (c == 'w' ? 1 : -1);
    const kingSteps = [ [backward, -1], [backward, 0], [backward, 1] ];
    return (
      this.getSlideNJumpMoves(sq, rookSteps).concat(
      this.getSlideNJumpMoves(sq, kingSteps, 1))
    );
  }

  getPotentialN_knightMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.$n, 1).concat(
      this.getSlideNJumpMoves(sq, V.steps.f, 1))
    );
  }

  getPotentialN_bishopMoves(sq) {
    const backward = (this.turn == 'w' ? 1 : -1);
    const kingSteps = [
      [0, -1], [0, 1], [backward, -1], [backward, 0], [backward, 1]
    ];
    const forward = -backward;
    const knightSteps = [
      [2*forward, -1], [2*forward, 1], [forward, -2], [forward, 2]
    ];
    return (
      this.getSlideNJumpMoves(sq, knightSteps, 1).concat(
      this.getSlideNJumpMoves(sq, kingSteps, 1))
    );
  }

  getPotentialN_queenMoves(sq) {
    const backward = (this.turn == 'w' ? 1 : -1);
    const forward = -backward;
    const kingSteps = [
      [forward, -1], [forward, 1],
      [backward, -1], [backward, 0], [backward, 1]
    ];
    const knightSteps = [
      [2*forward, -1], [2*forward, 1], [forward, -2], [forward, 2]
    ];
    const rookSteps = [ [0, -1], [0, 1], [forward, 0] ];
    return (
      this.getSlideNJumpMoves(sq, rookSteps).concat(
      this.getSlideNJumpMoves(sq, kingSteps, 1)).concat(
      this.getSlideNJumpMoves(sq, knightSteps, 1))
    );
  }

  getPotentialR_rookMoves(sq) {
    return this.getSlideNJumpMoves(sq, V.steps.r, 4);
  }

  getPotentialR_knightMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.d, 1).concat(
      this.getSlideNJumpMoves(sq, V.steps.w, 1))
    );
  }

  getPotentialR_bishopMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.d, 1).concat(
      this.getSlideNJumpMoves(sq, V.steps.f, 1)).concat(
      this.getSlideNJumpMoves(sq, V.steps.$3, 1))
    );
  }

  getPotentialR_queenMoves(sq) {
    return (
      this.getSlideNJumpMoves(sq, V.steps.r).concat(
      this.getSlideNJumpMoves(sq, V.steps.n, 1))
    );
  }

  getCastleMoves([x, y]) {
    const color = this.getColor(x, y);
    let finalSquares = [ [2, 3], [V.size.y - 2, V.size.y - 3] ];
    if (
      (color == 'w' && this.army1 == 'C') ||
      (color == 'b' && this.army2 == 'C')
    ) {
      // Colorbound castle long in an unusual way:
      finalSquares[0] = [1, 2];
    }
    return super.getCastleMoves([x, y], finalSquares);
  }

  isAttacked(sq, color) {
    if (super.isAttackedByPawn(sq, color) || super.isAttackedByKing(sq, color))
      return true;
    for (let army of ['C', 'N', 'R', 'F']) {
      if (
        [this.army1, this.army2].includes(army) &&
        (
          this["isAttackedBy" + army + "_rook"](sq, color) ||
          this["isAttackedBy" + army + "_knight"](sq, color) ||
          this["isAttackedBy" + army + "_bishop"](sq, color) ||
          this["isAttackedBy" + army + "_queen"](sq, color)
        )
      ) {
        return true;
      }
    }
    return false;
  }

  isAttackedByC_rook(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.C_ROOK, V.steps.b) ||
      this.isAttackedBySlideNJump(sq, color, V.C_ROOK, V.steps.d, 1)
    );
  }

  isAttackedByC_knight(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.C_KNIGHT, V.steps.r, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.C_KNIGHT, V.steps.a, 1)
    );
  }

  isAttackedByC_bishop(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.C_BISHOP, V.steps.d, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.C_BISHOP, V.steps.a, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.C_BISHOP, V.steps.f, 1)
    );
  }

  isAttackedByC_queen(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.C_QUEEN, V.steps.b) ||
      this.isAttackedBySlideNJump(sq, color, V.C_QUEEN, V.steps.n, 1)
    );
  }

  isAttackedByN_rook(sq, color) {
    const rookSteps = [ [0, -1], [0, 1], [color == 'w' ? 1 : -1, 0] ];
    const backward = (color == 'w' ? -1 : 1);
    const kingSteps = [ [backward, -1], [backward, 0], [backward, 1] ];
    return (
      this.isAttackedBySlideNJump(sq, color, V.N_ROOK, rookSteps) ||
      this.isAttackedBySlideNJump(sq, color, V.N_ROOK, kingSteps, 1)
    );
  }

  isAttackedByN_knight(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.N_KNIGHT, V.steps.$n, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.N_KNIGHT, V.steps.f, 1)
    );
  }

  isAttackedByN_bishop(sq, color) {
    const backward = (color == 'w' ? -1 : 1);
    const kingSteps = [
      [0, -1], [0, 1], [backward, -1], [backward, 0], [backward, 1]
    ];
    const forward = -backward;
    const knightSteps = [
      [2*forward, -1], [2*forward, 1], [forward, -2], [forward, 2]
    ];
    return (
      this.isAttackedBySlideNJump(sq, color, V.N_BISHOP, knightSteps, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.N_BISHOP, kingSteps, 1)
    );
  }

  isAttackedByN_queen(sq, color) {
    const backward = (color == 'w' ? -1 : 1);
    const forward = -backward;
    const kingSteps = [
      [forward, -1], [forward, 1],
      [backward, -1], [backward, 0], [backward, 1]
    ];
    const knightSteps = [
      [2*forward, -1], [2*forward, 1], [forward, -2], [forward, 2]
    ];
    const rookSteps = [ [0, -1], [0, 1], [forward, 0] ];
    return (
      this.isAttackedBySlideNJump(sq, color, V.N_QUEEN, knightSteps, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.N_QUEEN, kingSteps, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.N_QUEEN, rookSteps)
    );
  }

  isAttackedByR_rook(sq, color) {
    return this.isAttackedBySlideNJump(sq, color, V.R_ROOK, V.steps.r, 4);
  }

  isAttackedByR_knight(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.R_KNIGHT, V.steps.d, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.R_KNIGHT, V.steps.w, 1)
    );
  }

  isAttackedByR_bishop(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.R_BISHOP, V.steps.d, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.R_BISHOP, V.steps.f, 1) ||
      this.isAttackedBySlideNJump(sq, color, V.R_BISHOP, V.steps.$3, 1)
    );
  }

  isAttackedByR_queen(sq, color) {
    return (
      this.isAttackedBySlideNJump(sq, color, V.R_QUEEN, V.steps.r) ||
      this.isAttackedBySlideNJump(sq, color, V.R_QUEEN, V.steps.n, 1)
    );
  }

  // [HACK] So that the function above works also on Fide army:
  isAttackedByF_rook(sq, color) {
    return super.isAttackedByRook(sq, color);
  }
  isAttackedByF_knight(sq, color) {
    return super.isAttackedByKnight(sq, color);
  }
  isAttackedByF_bishop(sq, color) {
    return super.isAttackedByBishop(sq, color);
  }
  isAttackedByF_queen(sq, color) {
    return super.isAttackedByQueen(sq, color);
  }

  static get VALUES() {
    return Object.assign(
      {
        d: 4,
        w: 3,
        f: 5,
        c: 7,
        g: 4,
        i: 3,
        t: 4,
        l: 7,
        s: 4,
        y: 3,
        h: 4,
        o: 8
      },
      ChessRules.VALUES
    );
  }

  static get SEARCH_DEPTH() {
    return 2;
  }

};
Commit	Line	Data
4313762d	1	import { ChessRules } from "@/base_rules";
801e2870	2
cee75a57	3	export class CwdaRules extends ChessRules {
7e8a7ea1	4
4313762d BA	5	static get Options() {
	6	return {
	7	select: ChessRules.Options.select.concat([
	8	{
	9	label: "Army 1",
	10	variable: "army1",
	11	defaut: 'C',
	12	options: [
	13	{ label: "Colorbound Clobberers", value: 'C' },
	14	{ label: "Nutty Knights", value: 'N' },
	15	{ label: "Remarkable Rookies", value: 'R' },
	16	{ label: "Fide", value: 'F' }
	17	]
	18	},
	19	{
	20	label: "Army 2",
	21	variable: "army2",
	22	defaut: 'C',
	23	options: [
	24	{ label: "Colorbound Clobberers", value: 'C' },
	25	{ label: "Nutty Knights", value: 'N' },
	26	{ label: "Remarkable Rookies", value: 'R' },
	27	{ label: "Fide", value: 'F' }
	28	]
	29	}
	30	])
	31	};
	32	}
	33
	34	static AbbreviateOptions(opts) {
	35	return opts["army1"] + opts["army2"];
	36	}
	37
	38	static IsValidOptions(opts) {
	39	// Both armies filled, avoid Fide vs Fide
	40	return (
	41	opts.army1 && opts.army2 &&
	42	(opts.army1 != 'F' \|\| opts.army2 != 'F')
801e2870 BA	43	);
	44	}
	45
	46	getPpath(b) {
4313762d BA	47	return (ChessRules.PIECES.includes(b[1]) ? "" : "Cwda/") + b;
	48	}
	49
	50	static get PiecesMap() {
	51	return {
	52	// Colorbound Clobberers
	53	'C': {
	54	'r': 'd',
	55	'n': 'w',
	56	'b': 'f',
	57	'q': 'c',
	58	'k': 'k'
	59	},
	60	// Nutty Knights
	61	'N': {
	62	'r': 'g',
	63	'n': 'i',
	64	'b': 't',
	65	'q': 'l',
	66	'k': 'k'
	67	},
	68	// Remarkable Rookies
	69	'R': {
	70	'r': 's',
	71	'n': 'y',
	72	'b': 'h',
	73	'q': 'o',
	74	'k': 'k'
	75	}
801e2870	76	};
4313762d	77	}
801e2870	78
4313762d BA	79	static GenRandInitFen(options) {
	80	const baseFen = ChessRules.GenRandInitFen(options.randomness);
	81	let blackLine = baseFen.substr(0, 8);
	82	if (options.army2 != 'F') {
	83	blackLine = blackLine.split('')
	84	.map(p => V.PiecesMap[options.army2][p]).join('');
	85	}
	86	let whiteLine = baseFen.substr(35, 8);
	87	if (options.army1 != 'F') {
	88	whiteLine = whiteLine.split('')
	89	.map(p => V.PiecesMap[options.army1][p.toLowerCase()])
	90	.join('').toUpperCase();
	91	}
801e2870	92	return (
4313762d BA	93	blackLine + baseFen.substring(8, 35) + whiteLine +
4313762d BA	94	baseFen.substr(43) + " " + options.army1 + options.army2
801e2870 BA	95	);
	96	}
	97
4313762d BA	98	setOtherVariables(fen) {
	99	super.setOtherVariables(fen);
	100	const armies = V.ParseFen(fen).armies;
	101	this.army1 = armies.charAt(0);
	102	this.army2 = armies.charAt(1);
	103	}
	104
	105	static ParseFen(fen) {
	106	return Object.assign(
	107	{ armies: fen.split(" ")[5] },
	108	ChessRules.ParseFen(fen)
	109	);
	110	}
	111
	112	static IsGoodFen(fen) {
	113	if (!ChessRules.IsGoodFen(fen)) return false;
	114	const armies = V.ParseFen(fen).armies;
	115	if (!armies \|\| !armies.match(/^[CNRF]{2,2}$/)) return false;
	116	return true;
	117	}
	118
	119	getFen() {
	120	return super.getFen() + " " + this.army1 + this.army2;
	121	}
	122
801e2870 BA	123	static get C_ROOK() {
	124	return 'd';
	125	}
	126	static get C_KNIGHT() {
4313762d	127	return 'w';
801e2870 BA	128	}
801e2870 BA	129	static get C_BISHOP() {
4313762d	130	return 'f';
801e2870 BA	131	}
801e2870 BA	132	static get C_QUEEN() {
4313762d BA	133	return 'c';
	134	}
	135	static get N_ROOK() {
	136	return 'g';
	137	}
	138	static get N_KNIGHT() {
	139	return 'i';
	140	}
	141	static get N_BISHOP() {
	142	return 't';
	143	}
	144	static get N_QUEEN() {
	145	return 'l';
	146	}
	147	static get R_ROOK() {
801e2870 BA	148	return 's';
801e2870 BA	149	}
4313762d BA	150	static get R_KNIGHT() {
	151	return 'y';
	152	}
	153	static get R_BISHOP() {
	154	return 'h';
	155	}
	156	static get R_QUEEN() {
	157	return 'o';
	158	}
801e2870 BA	159
801e2870 BA	160	static get PIECES() {
4313762d BA	161	return ChessRules.PIECES.concat(
	162	[V.C_ROOK, V.C_KNIGHT, V.C_BISHOP, V.C_QUEEN]).concat(
	163	[V.N_ROOK, V.N_KNIGHT, V.N_BISHOP, V.N_QUEEN]).concat(
	164	[V.R_ROOK, V.R_KNIGHT, V.R_BISHOP, V.R_QUEEN]);
801e2870 BA	165	}
801e2870 BA	166
4313762d BA	167	getPotentialMovesFrom(sq) {
	168	switch (this.getPiece(sq[0], sq[1])) {
	169	case V.C_ROOK: return this.getPotentialC_rookMoves(sq);
	170	case V.C_KNIGHT: return this.getPotentialC_knightMoves(sq);
	171	case V.C_BISHOP: return this.getPotentialC_bishopMoves(sq);
	172	case V.C_QUEEN: return this.getPotentialC_queenMoves(sq);
	173	case V.N_ROOK: return this.getPotentialN_rookMoves(sq);
	174	case V.N_KNIGHT: return this.getPotentialN_knightMoves(sq);
	175	case V.N_BISHOP: return this.getPotentialN_bishopMoves(sq);
	176	case V.N_QUEEN: return this.getPotentialN_queenMoves(sq);
	177	case V.R_ROOK: return this.getPotentialR_rookMoves(sq);
	178	case V.R_KNIGHT: return this.getPotentialR_knightMoves(sq);
	179	case V.R_BISHOP: return this.getPotentialR_bishopMoves(sq);
	180	case V.R_QUEEN: return this.getPotentialR_queenMoves(sq);
	181	case V.PAWN: {
	182	// Can promote in anything from the two current armies
	183	let promotions = [];
	184	for (let army of ["army1", "army2"]) {
	185	if (army == "army2" && this.army2 == this.army1) break;
	186	switch (this[army]) {
	187	case 'C': {
	188	Array.prototype.push.apply(promotions,
	189	[V.C_ROOK, V.C_KNIGHT, V.C_BISHOP, V.C_QUEEN]);
	190	break;
	191	}
	192	case 'N': {
	193	Array.prototype.push.apply(promotions,
	194	[V.N_ROOK, V.N_KNIGHT, V.N_BISHOP, V.N_QUEEN]);
	195	break;
	196	}
	197	case 'R': {
	198	Array.prototype.push.apply(promotions,
	199	[V.R_ROOK, V.R_KNIGHT, V.R_BISHOP, V.R_QUEEN]);
	200	break;
	201	}
	202	case 'F': {
	203	Array.prototype.push.apply(promotions,
	204	[V.ROOK, V.KNIGHT, V.BISHOP, V.QUEEN]);
	205	break;
	206	}
	207	}
	208	}
	209	return super.getPotentialPawnMoves(sq, promotions);
	210	}
	211	default: return super.getPotentialMovesFrom(sq);
801e2870 BA	212	}
	213	return [];
	214	}
	215
	216	static get steps() {
	217	return Object.assign(
801e2870 BA	218	{
	219	// Dabbabah
	220	'd': [
	221	[-2, 0],
	222	[0, -2],
	223	[2, 0],
	224	[0, 2]
	225	],
	226	// Alfil
	227	'a': [
	228	[2, 2],
	229	[2, -2],
	230	[-2, 2],
	231	[-2, -2]
	232	],
	233	// Ferz
	234	'f': [
	235	[1, 1],
	236	[1, -1],
	237	[-1, 1],
	238	[-1, -1]
4313762d BA	239	],
	240	// Wazir
	241	'w': [
	242	[-1, 0],
	243	[0, -1],
	244	[1, 0],
	245	[0, 1]
	246	],
	247	// Threeleaper
	248	'$3': [
	249	[-3, 0],
	250	[0, -3],
	251	[3, 0],
	252	[0, 3]
	253	],
	254	// Narrow knight
	255	'$n': [
	256	[-2, -1],
	257	[-2, 1],
	258	[2, -1],
	259	[2, 1]
801e2870	260	]
4313762d BA	261	},
4313762d BA	262	ChessRules.steps,
801e2870 BA	263	);
	264	}
	265
	266	getPotentialC_rookMoves(sq) {
	267	return (
4313762d BA	268	this.getSlideNJumpMoves(sq, V.steps.b).concat(
4313762d BA	269	this.getSlideNJumpMoves(sq, V.steps.d, 1))
801e2870 BA	270	);
	271	}
	272
	273	getPotentialC_knightMoves(sq) {
	274	return (
4313762d BA	275	this.getSlideNJumpMoves(sq, V.steps.a, 1).concat(
4313762d BA	276	this.getSlideNJumpMoves(sq, V.steps.r, 1))
801e2870 BA	277	);
	278	}
	279
	280	getPotentialC_bishopMoves(sq) {
	281	return (
4313762d BA	282	this.getSlideNJumpMoves(sq, V.steps.d, 1).concat(
	283	this.getSlideNJumpMoves(sq, V.steps.a, 1)).concat(
	284	this.getSlideNJumpMoves(sq, V.steps.b, 1))
801e2870 BA	285	);
	286	}
	287
	288	getPotentialC_queenMoves(sq) {
	289	return (
4313762d BA	290	this.getSlideNJumpMoves(sq, V.steps.b).concat(
	291	this.getSlideNJumpMoves(sq, V.steps.n, 1))
	292	);
	293	}
	294
	295	getPotentialN_rookMoves(sq) {
	296	const c = this.turn;
	297	const rookSteps = [ [0, -1], [0, 1], [c == 'w' ? -1 : 1, 0] ];
	298	const backward = (c == 'w' ? 1 : -1);
	299	const kingSteps = [ [backward, -1], [backward, 0], [backward, 1] ];
	300	return (
	301	this.getSlideNJumpMoves(sq, rookSteps).concat(
	302	this.getSlideNJumpMoves(sq, kingSteps, 1))
	303	);
	304	}
	305
	306	getPotentialN_knightMoves(sq) {
4313762d BA	307	return (
4313762d BA	308	this.getSlideNJumpMoves(sq, V.steps.$n, 1).concat(
902378e6	309	this.getSlideNJumpMoves(sq, V.steps.f, 1))
4313762d BA	310	);
	311	}
	312
	313	getPotentialN_bishopMoves(sq) {
	314	const backward = (this.turn == 'w' ? 1 : -1);
	315	const kingSteps = [
	316	[0, -1], [0, 1], [backward, -1], [backward, 0], [backward, 1]
	317	];
	318	const forward = -backward;
	319	const knightSteps = [
	320	[2forward, -1], [2forward, 1], [forward, -2], [forward, 2]
	321	];
	322	return (
	323	this.getSlideNJumpMoves(sq, knightSteps, 1).concat(
	324	this.getSlideNJumpMoves(sq, kingSteps, 1))
	325	);
	326	}
	327
	328	getPotentialN_queenMoves(sq) {
	329	const backward = (this.turn == 'w' ? 1 : -1);
	330	const forward = -backward;
	331	const kingSteps = [
	332	[forward, -1], [forward, 1],
	333	[backward, -1], [backward, 0], [backward, 1]
	334	];
	335	const knightSteps = [
	336	[2forward, -1], [2forward, 1], [forward, -2], [forward, 2]
	337	];
	338	const rookSteps = [ [0, -1], [0, 1], [forward, 0] ];
	339	return (
	340	this.getSlideNJumpMoves(sq, rookSteps).concat(
	341	this.getSlideNJumpMoves(sq, kingSteps, 1)).concat(
	342	this.getSlideNJumpMoves(sq, knightSteps, 1))
	343	);
	344	}
	345
	346	getPotentialR_rookMoves(sq) {
	347	return this.getSlideNJumpMoves(sq, V.steps.r, 4);
	348	}
	349
	350	getPotentialR_knightMoves(sq) {
	351	return (
	352	this.getSlideNJumpMoves(sq, V.steps.d, 1).concat(
	353	this.getSlideNJumpMoves(sq, V.steps.w, 1))
	354	);
	355	}
	356
	357	getPotentialR_bishopMoves(sq) {
	358	return (
	359	this.getSlideNJumpMoves(sq, V.steps.d, 1).concat(
	360	this.getSlideNJumpMoves(sq, V.steps.f, 1)).concat(
	361	this.getSlideNJumpMoves(sq, V.steps.$3, 1))
	362	);
	363	}
	364
	365	getPotentialR_queenMoves(sq) {
	366	return (
	367	this.getSlideNJumpMoves(sq, V.steps.r).concat(
	368	this.getSlideNJumpMoves(sq, V.steps.n, 1))
801e2870 BA	369	);
	370	}
	371
801e2870	372	getCastleMoves([x, y]) {
7e8a7ea1	373	const color = this.getColor(x, y);
4313762d BA	374	let finalSquares = [ [2, 3], [V.size.y - 2, V.size.y - 3] ];
	375	if (
	376	(color == 'w' && this.army1 == 'C') \|\|
	377	(color == 'b' && this.army2 == 'C')
	378	) {
	379	// Colorbound castle long in an unusual way:
	380	finalSquares[0] = [1, 2];
	381	}
7e8a7ea1	382	return super.getCastleMoves([x, y], finalSquares);
801e2870 BA	383	}
	384
	385	isAttacked(sq, color) {
4313762d BA	386	if (super.isAttackedByPawn(sq, color) \|\| super.isAttackedByKing(sq, color))
	387	return true;
	388	for (let army of ['C', 'N', 'R', 'F']) {
	389	if (
	390	[this.army1, this.army2].includes(army) &&
	391	(
	392	this["isAttackedBy" + army + "_rook"](sq, color) \|\|
	393	this["isAttackedBy" + army + "_knight"](sq, color) \|\|
	394	this["isAttackedBy" + army + "_bishop"](sq, color) \|\|
	395	this["isAttackedBy" + army + "_queen"](sq, color)
	396	)
	397	) {
	398	return true;
	399	}
	400	}
	401	return false;
801e2870 BA	402	}
	403
	404	isAttackedByC_rook(sq, color) {
	405	return (
4313762d BA	406	this.isAttackedBySlideNJump(sq, color, V.C_ROOK, V.steps.b) \|\|
4313762d BA	407	this.isAttackedBySlideNJump(sq, color, V.C_ROOK, V.steps.d, 1)
801e2870 BA	408	);
	409	}
	410
	411	isAttackedByC_knight(sq, color) {
	412	return (
4313762d BA	413	this.isAttackedBySlideNJump(sq, color, V.C_KNIGHT, V.steps.r, 1) \|\|
4313762d BA	414	this.isAttackedBySlideNJump(sq, color, V.C_KNIGHT, V.steps.a, 1)
801e2870 BA	415	);
	416	}
	417
	418	isAttackedByC_bishop(sq, color) {
	419	return (
4313762d BA	420	this.isAttackedBySlideNJump(sq, color, V.C_BISHOP, V.steps.d, 1) \|\|
	421	this.isAttackedBySlideNJump(sq, color, V.C_BISHOP, V.steps.a, 1) \|\|
	422	this.isAttackedBySlideNJump(sq, color, V.C_BISHOP, V.steps.f, 1)
801e2870 BA	423	);
	424	}
	425
	426	isAttackedByC_queen(sq, color) {
	427	return (
4313762d BA	428	this.isAttackedBySlideNJump(sq, color, V.C_QUEEN, V.steps.b) \|\|
	429	this.isAttackedBySlideNJump(sq, color, V.C_QUEEN, V.steps.n, 1)
	430	);
	431	}
	432
	433	isAttackedByN_rook(sq, color) {
	434	const rookSteps = [ [0, -1], [0, 1], [color == 'w' ? 1 : -1, 0] ];
	435	const backward = (color == 'w' ? -1 : 1);
	436	const kingSteps = [ [backward, -1], [backward, 0], [backward, 1] ];
	437	return (
	438	this.isAttackedBySlideNJump(sq, color, V.N_ROOK, rookSteps) \|\|
	439	this.isAttackedBySlideNJump(sq, color, V.N_ROOK, kingSteps, 1)
	440	);
	441	}
	442
	443	isAttackedByN_knight(sq, color) {
4313762d	444	return (
902378e6 BA	445	this.isAttackedBySlideNJump(sq, color, V.N_KNIGHT, V.steps.$n, 1) \|\|
902378e6 BA	446	this.isAttackedBySlideNJump(sq, color, V.N_KNIGHT, V.steps.f, 1)
4313762d BA	447	);
	448	}
	449
	450	isAttackedByN_bishop(sq, color) {
	451	const backward = (color == 'w' ? -1 : 1);
	452	const kingSteps = [
	453	[0, -1], [0, 1], [backward, -1], [backward, 0], [backward, 1]
	454	];
	455	const forward = -backward;
	456	const knightSteps = [
	457	[2forward, -1], [2forward, 1], [forward, -2], [forward, 2]
	458	];
	459	return (
	460	this.isAttackedBySlideNJump(sq, color, V.N_BISHOP, knightSteps, 1) \|\|
	461	this.isAttackedBySlideNJump(sq, color, V.N_BISHOP, kingSteps, 1)
	462	);
	463	}
	464
	465	isAttackedByN_queen(sq, color) {
	466	const backward = (color == 'w' ? -1 : 1);
	467	const forward = -backward;
	468	const kingSteps = [
	469	[forward, -1], [forward, 1],
	470	[backward, -1], [backward, 0], [backward, 1]
	471	];
	472	const knightSteps = [
	473	[2forward, -1], [2forward, 1], [forward, -2], [forward, 2]
	474	];
	475	const rookSteps = [ [0, -1], [0, 1], [forward, 0] ];
	476	return (
	477	this.isAttackedBySlideNJump(sq, color, V.N_QUEEN, knightSteps, 1) \|\|
	478	this.isAttackedBySlideNJump(sq, color, V.N_QUEEN, kingSteps, 1) \|\|
	479	this.isAttackedBySlideNJump(sq, color, V.N_QUEEN, rookSteps)
	480	);
	481	}
	482
	483	isAttackedByR_rook(sq, color) {
	484	return this.isAttackedBySlideNJump(sq, color, V.R_ROOK, V.steps.r, 4);
	485	}
	486
	487	isAttackedByR_knight(sq, color) {
	488	return (
	489	this.isAttackedBySlideNJump(sq, color, V.R_KNIGHT, V.steps.d, 1) \|\|
	490	this.isAttackedBySlideNJump(sq, color, V.R_KNIGHT, V.steps.w, 1)
	491	);
	492	}
	493
	494	isAttackedByR_bishop(sq, color) {
	495	return (
	496	this.isAttackedBySlideNJump(sq, color, V.R_BISHOP, V.steps.d, 1) \|\|
	497	this.isAttackedBySlideNJump(sq, color, V.R_BISHOP, V.steps.f, 1) \|\|
	498	this.isAttackedBySlideNJump(sq, color, V.R_BISHOP, V.steps.$3, 1)
	499	);
	500	}
	501
	502	isAttackedByR_queen(sq, color) {
	503	return (
	504	this.isAttackedBySlideNJump(sq, color, V.R_QUEEN, V.steps.r) \|\|
	505	this.isAttackedBySlideNJump(sq, color, V.R_QUEEN, V.steps.n, 1)
801e2870 BA	506	);
	507	}
	508
b2f43cc3 BA	509	// [HACK] So that the function above works also on Fide army:
	510	isAttackedByF_rook(sq, color) {
	511	return super.isAttackedByRook(sq, color);
	512	}
	513	isAttackedByF_knight(sq, color) {
	514	return super.isAttackedByKnight(sq, color);
	515	}
	516	isAttackedByF_bishop(sq, color) {
	517	return super.isAttackedByBishop(sq, color);
	518	}
	519	isAttackedByF_queen(sq, color) {
	520	return super.isAttackedByQueen(sq, color);
	521	}
	522
801e2870 BA	523	static get VALUES() {
801e2870 BA	524	return Object.assign(
801e2870 BA	525	{
801e2870 BA	526	d: 4,
4313762d BA	527	w: 3,
	528	f: 5,
	529	c: 7,
	530	g: 4,
	531	i: 3,
	532	t: 4,
	533	l: 7,
	534	s: 4,
	535	y: 3,
	536	h: 4,
	537	o: 8
	538	},
	539	ChessRules.VALUES
801e2870 BA	540	);
801e2870 BA	541	}
48252022 BA	542
	543	static get SEARCH_DEPTH() {
	544	return 2;
	545	}
7e8a7ea1	546
801e2870	547	};