Changed BOARD_SIZE from a global constant to a constant within the Bo…

…ard class. Added #valid_cell_number? to check if a number falls in the board's cell range
lisahamm · Mar 23, 2015 · ee889e6 · ee889e6
1 parent c64ca12
commit ee889e6
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/lib/tic_tac_toe/board.rb b/lib/tic_tac_toe/board.rb
@@ -1,9 +1,10 @@
 module TicTacToe
-  BOARD_SIZE = 3
 
   class Board
     attr_accessor :cells, :size
 
+    BOARD_SIZE = 3
+
     def initialize(options={})
       options = defaults.merge(options)
       @size = options[:size]
@@ -22,6 +23,10 @@ def remove_mark(cell_number)
       cells[cell_number].symbol = nil
     end
 
+    def valid_cell_number?(cell_number)
+      (0..(size ** 2 - 1)).include?(cell_number)
+    end
+
     def empty_cell?(cell_number)
       cells[cell_number].symbol == nil
     end