Implement find_rook

lib/board.rb

@@ -256,9 +256,29 @@ def find_knight(origin, active_player)
  end
 
  def find_rook(origin, active_player)
+ moves = [[[1, 0], [2, 0], [3, 0], [4, 0], [5, 0], [6, 0], [7, 0]],
+ [[0, 1], [0, 2], [0, 3], [0, 4], [0, 5], [0, 6], [0, 7]],
+ [[-1, 0], [-2, 0], [-3, 0], [-4, 0], [-5, 0], [-6, 0], [-7, 0]],
+ [[0, -1], [0, -2], [0, -3], [0, -4], [0, -5], [0, -6], [0, -7]]]
 
- # TO DO
+ moves.each do |direction|
+ direction.each do |move|
+ break if target[0] + move[0] < 0 || target[0] + move[0] > 7 || target[1] + move[1] < 0 || target[1] + move[1] > 7
 
+ candidate = board[target[0] + move[0]][target[1] + move[1]]
+
+ next if candidate == ' '
+
+ break unless candidate.is_a?(Rook) && candidate.color == active_player
+
+ next unless (origin[0].nil? || origin[0] == move[0]) && (origin[1].nil? || origin[1] == move[1])
+
+ return [target[0] + move[0], target[1] + move[1]]
+ end
+ end
+
+ puts '## Failed to find the Rook'
+ raise StandardError
  end
 
  def find_pawn(origin, active_player)