Class: Upwords::MoveManager

Inherits:
Object
  • Object
show all
Defined in:
lib/upwords/move_manager.rb

Instance Method Summary collapse

Constructor Details

#initialize(board, dictionary) ⇒ MoveManager

Returns a new instance of MoveManager.



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# File 'lib/upwords/move_manager.rb', line 4

def initialize(board, dictionary) 
  @board = board
  @dict = dictionary
  @pending_move = []
  @move_history = [] # TODO: Add filled board spaces as first move if board is not empty
end

Instance Method Details

#add(player, letter, row, col) ⇒ Object

Player-Board Interaction Methods



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# File 'lib/upwords/move_manager.rb', line 15

def add(player, letter, row, col)
  if self.include?(row, col) 
    raise IllegalMove, "You can't stack on a space more than once in a single turn!"
  elsif
    @pending_move << player.play_letter(@board, letter, row, col)
  end
end

#include?(row, col) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/upwords/move_manager.rb', line 23

def include?(row, col)
  @pending_move.map {|m| m[0]}.include?([row, col])
end

#legal? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/upwords/move_manager.rb', line 66

def legal?
  prev_board = Board.build(@move_history, @board.size, @board.max_height)
  Move.new(@pending_move).legal?(prev_board, @dict, raise_exception = true)
end

#pending_score(player) ⇒ Object 



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# File 'lib/upwords/move_manager.rb', line 61

def pending_score(player)
  prev_board = Board.build(@move_history, @board.size, @board.max_height)
  Move.new(@pending_move).score(prev_board, player)
end

#pending_words ⇒ Object

TODO: cache previous board in local variable…



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# File 'lib/upwords/move_manager.rb', line 56

def pending_words
  prev_board = Board.build(@move_history, @board.size, @board.max_height)
  Move.new(@pending_move).new_words(prev_board)
end

#submit(player) ⇒ Object 



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# File 'lib/upwords/move_manager.rb', line 41

def submit(player)
  if @pending_move.empty?
    raise IllegalMove, "You haven't played any letters!"
  elsif legal?
    player.score += pending_score(player)
    @move_history << Move.new(@pending_move)
    @pending_move.clear
  end
end

#undo_all(player) ⇒ Object 



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# File 'lib/upwords/move_manager.rb', line 35

def undo_all(player)
  until @pending_move.empty? do
    undo_last(player)
  end
end

#undo_last(player) ⇒ Object 



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# File 'lib/upwords/move_manager.rb', line 27

def undo_last(player)
  if @pending_move.empty?
    raise IllegalMove, "No moves to undo!"
  else
    player.take_from(@board, *@pending_move.pop[0]) # TODO: make Tile class
  end
end