phase 0 unit 2 week 1 boggle class challenge

0.2.1-boggle_class_from_methods.rb

class BoggleBoard 

	def initialize board 
		@board = board
	end

	def create_word *coord
		coord.map { |coord| @board[coord.first][coord.last]}.join("")
	end

	def get_row row_number
		@board[row_number]
	end

	def get_column col_number
		@board.map { |row| row[col_number] }
	end 

	def get_diagonal coord1, coord2 
		@coord1, @coord2 = coord1, coord2

		# make sure it's actually diagonal 
		raise ArgumentError, "This isn't diagonal!" if ( (@coord1.first == @coord2.first) || (@coord1.last == @coord2.last) ) 

		@results_coords = [] 

		if 		( @coord1.first > @coord2.first ) && ( @coord1.last < @coord2.last ) # northeast 

					direction = :upright

					@coord_arr = []
					@coord_arr << @coord1[0]
					@coord_arr << @coord1[1]

					@results_coords << @coord_arr

					while @coord1 != @coord2
					@coord_arr = []

					@coord_arr << @coord1[0] - 1 
					@coord1[0] -= 1 
					
					@coord_arr << @coord1[1] + 1 
					@coord1[1] += 1

					@results_coords << @coord_arr

					end

		elsif   ( @coord1.first > @coord2.first ) && ( @coord1.last > @coord2.last )  
					direction = :upleft

					@coord_arr = []
					@coord_arr << @coord1[0]
					@coord_arr << @coord1[1]

					@results_coords << @coord_arr

					while @coord1 != @coord2
					@coord_arr = []

					@coord_arr << @coord1[0] - 1 
					@coord1[0] -= 1 
					
					@coord_arr << @coord1[1] - 1 
					@coord1[1] -= 1

					@results_coords << @coord_arr
					end

		elsif   ( @coord1.first < @coord2.first ) && ( @coord1.last > @coord2.last ) 
					direction = :downleft

					@coord_arr = []
					@coord_arr << @coord1[0]
					@coord_arr << @coord1[1]

					@results_coords << @coord_arr

					while @coord1 != @coord2   
					@coord_arr = []

					@coord_arr << @coord1[0] + 1 
					@coord1[0] += 1 
					
					@coord_arr << @coord1[1] - 1 
					@coord1[1] -= 1

					@results_coords << @coord_arr
					end

		elsif 	( @coord1.first < @coord2.first ) && ( @coord1.last < @coord2.last )
					direction = :downright 

					@coord_arr = []
					@coord_arr << @coord1[0]
					@coord_arr << @coord1[1]

					@results_coords << @coord_arr

					while @coord1 != @coord2  
					@coord_arr = []

					@coord_arr << @coord1[0] + 1 
					@coord1[0] += 1 
					
					@coord_arr << @coord1[1] + 1 
					@coord1[1] += 1

					@results_coords << @coord_arr
					end
		end

		return @results_coords

	end 


end

dice_grid = [["b", "r", "a", "e"],
             ["i", "o", "d", "t"],
             ["e", "c", "l", "r"],
             ["t", "a", "k", "e"]]

boggle_board = BoggleBoard.new(dice_grid)

# implement tests for each of the methods here:

puts boggle_board.get_row(2)					  	        == ["e", "c", "l", "r"] # => true
puts boggle_board.get_row(0)						          == ["b", "r", "a", "e"] # => true

puts boggle_board.get_column(1)						        == ["r", "o", "c", "a"] # => true
puts boggle_board.get_column(3)						        == ["e", "t", "r", "e"] # => true

puts boggle_board.create_word([0,1],[0,2],[1,2]) 	== 'rad'         				# => true

puts boggle_board.get_diagonal( [3,0], [0,3] )      == [[3, 0], [2, 1], [1, 2], [0, 3]] # northeast
puts boggle_board.get_diagonal( [0,0], [3,3] )      == [[0, 0], [1, 1], [2, 2], [3, 3]] # southeast
puts boggle_board.get_diagonal( [3,3], [0,0] )      == [[3, 3], [2, 2], [1, 1], [0, 0]] # northwest
puts boggle_board.get_diagonal( [0,3], [3,0] )      == [[0, 3], [1, 2], [2, 1], [3, 0]] # southwest

# create driver test code to retrieve a value at a coordinate here:
puts boggle_board.create_word([0,3])			      	== 'e'				        	# => true