Class: Connect::Computer

Inherits:
Object
  • Object
show all
Defined in:
lib/connect/computer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Computer

Returns a new instance of Computer.



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# File 'lib/connect/computer.rb', line 6

def initialize
    @piece = 'O'
end

Instance Attribute Details

#piece ⇒ Object (readonly)

Returns the value of attribute piece.



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# File 'lib/connect/computer.rb', line 4

def piece
  @piece
end

Instance Method Details

#find_block_column(board) ⇒ Object 



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# File 'lib/connect/computer.rb', line 34

def find_block_column(board)
    piece = 'X'
    find_column(piece, board)
end

#find_column(piece, board) ⇒ Object 



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# File 'lib/connect/computer.rb', line 39

def find_column(piece, board)
    columns = ('A'..'G').to_a
    columns.each do |column|
        board_copy = Board.new
        board_copy.cells = board.dup.cells.map(&:dup)
        board_copy.add_piece(column, piece)

        return column if board_copy.win?
    end
    nil
end

#find_random_column(board) ⇒ Object 



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# File 'lib/connect/computer.rb', line 24

def find_random_column(board)
    columns = ('A'..'G').to_a
    columns.sample
end

#find_win_column(board) ⇒ Object 



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# File 'lib/connect/computer.rb', line 29

def find_win_column(board)
    piece = @piece
    find_column(piece, board)
end

#make_move(board) ⇒ Object 



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# File 'lib/connect/computer.rb', line 10

def make_move(board)
    win = find_win_column(board)
    block = find_block_column(board)
    random = find_random_column(board)
    
    if win
        board.add_piece(win, @piece)
    elsif block
        board.add_piece(block, @piece)
    else
        board.add_piece(random, @piece)
    end
end