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sudoku.rb
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sudoku.rb
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require_relative "board"
class SudokuGame
def self.from_file(filename)
board = Board.from_file(filename)
self.new(board)
end
def initialize(board)
@board = board
end
def get_pos
pos = nil
until pos && valid_pos?(pos)
puts "Please enter a position on the board (e.g., '3,4')"
print "> "
begin
pos = parse_pos(gets.chomp)
rescue
puts "Invalid position entered (did you use a comma?)"
puts ""
pos = nil
end
end
pos
end
def get_val
val = nil
until val && valid_val?(val)
puts "Please enter a value between 1 and 9 (0 to clear the tile)"
print "> "
val = parse_val(gets.chomp)
end
val
end
def parse_pos(string)
string.split(",").map { |char| Integer(char) }
end
def parse_val(string)
Integer(string)
end
def play_turn
board.render
pos = get_pos
val = get_val
board[pos] = val
end
def run
play_turn until solved?
board.render
puts "Congratulations, you win!"
end
def solved?
board.solved?
end
def valid_pos?(pos)
pos.is_a?(Array) &&
pos.length == 2 &&
pos.all? { |x| x.between?(0, board.size - 1) }
end
def valid_val?(val)
val.is_a?(Integer) &&
val.between?(0, 9)
end
private
attr_reader :board
end
game = SudokuGame.from_file("puzzles/sudoku1.txt")
game.run