Class: ChessData::Moves::PawnCapture

Inherits:
Object
  • Object
show all
Defined in:
lib/chess_data/moves.rb

Overview

Methods to support a pawn move which makes a capture.

Direct Known Subclasses

PromotionPawnCapture

Instance Method Summary collapse

Constructor Details

#initialize(move) ⇒ PawnCapture

Returns a new instance of PawnCapture.



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# File 'lib/chess_data/moves.rb', line 387

def initialize move
  @move_string = move
  move =~ MatchPawnCapture
  @source = $1
  @destination = $2
end

Instance Method Details

#make_move(board) ⇒ Object

Returns a new instance of the board after move is made.



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# File 'lib/chess_data/moves.rb', line 399

def make_move board
  origin = find_origin board.to_move

  revised_board = board.clone
  if @destination == board.enpassant_target
    revised_board["#{@destination[0]}#{origin[1]}"] = nil
  end
  revised_board[origin] = nil
  revised_board[@destination] = board[origin]
  revised_board.enpassant_target = "-"
  revised_board.halfmove_clock = 0
  if board.to_move == "w"
    revised_board.to_move = "b"
  else
    revised_board.to_move = "w"
    revised_board.fullmove_number += 1
  end

  return revised_board
end

#to_s ⇒ Object 



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# File 'lib/chess_data/moves.rb', line 394

def to_s
  @move_string
end