Contents

'use strict';

module.exports = function(options) {
  if (options === undefined) {
    options = { white: [0,3], black: [7,3] };
  }

  if (options.white[0] === options.black[0] && options.white[1] === options.black[1]) {
    throw 'Queens cannot share the same space';
  }

  this.white = options.white;
  this.black = options.black;

  this.canAttack = function() {
    var canAttack = false;

    if (this.white[0] === this.black[0]) {
      canAttack = true;
    }
    if (this.white[1] === this.black[1]) {
      canAttack = true;
    }

    var yDistance = this.white[0] - this.black[0];
    var xDistance = this.white[1] - this.black[1];

    if (xDistance === yDistance) {
      canAttack = true;
    }

    if (xDistance === -yDistance) {
      canAttack = true;
    }

    return canAttack;
  };

  this.boardRepresentation = function() {
    var boardRepresentation = '';

    for (var i = 0; i < 8; i++) {
      for (var j = 0; j < 8; j++) {
        if (this.white[0] === i && this.white[1] === j) {
          boardRepresentation += 'W';
        } else if (this.black[0] === i && this.black[1] === j) {
          boardRepresentation += 'B';
        } else {
          boardRepresentation += '_';
        }

        if (j < 7) { boardRepresentation += ' '; }
      }
      boardRepresentation += '\n';
    }

    return boardRepresentation;
  };

  this.toString = function() {
    return this.boardRepresentation();
  };
};

Version data entries

255 entries across 255 versions & 1 rubygems

Version	Path
trackler-2.2.1.37	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.36	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.35	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.34	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.33	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.32	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.31	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.30	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.29	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.28	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.27	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.26	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.25	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.24	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.23	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.22	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.21	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.20	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.19	tracks/javascript/exercises/queen-attack/example.js
trackler-2.2.1.18	tracks/javascript/exercises/queen-attack/example.js