class Queen

Queen piece for a game of chess

Public Class Methods

new(color, position) click to toggle source

Initializes a new queen piece with color and position.

@param [String] color A string denoting the color of the piece. @param [Array<Integer>] position An integer array of length 2 denoting the location of the piece on the board.

Calls superclass method ChessPiece::new

# File lib/chess_pieces/queen.rb, line 13
def initialize(color, position)
  @move_tree_template = build_queen_move_tree
  super(color == 'white' ? '♛'.white : '♕', color, position, 9)
end

Protected Instance Methods

build_queen_move_tree() click to toggle source

Builds the Queen's move tree. The Queen can move in any direction as far as the board permits.

@return [MoveTree] move_tree_template A move tree template for the Queen.

# File lib/chess_pieces/queen.rb, line 25
def build_queen_move_tree
  move_tree_template = MoveTree.new([0, 0])
  # Get directions
  directions = [-1, 0, 1].repeated_permutation(2).to_a
  directions.delete([0, 0])

  directions.each do |direction|
    move_tree_template.root.add_child(build_directional_tree_nodes(direction))
  end

  move_tree_template
end