Flesh out the game loop

* Use a new, currently empty `Board#winner?` method as our loop
  condition
* Add `Player#insignia` so we can print the correct player insignia
  depending on who the current player is
* Print the board and a prompt for coordinates
* Switch the current player after a player finishes moving

5 files changed, 27 insertions, 1 deletions

diff --git a/board.rb b/board.rb
index 5db93fd..df66a8d 100644
--- a/board.rb
+++ b/board.rb
@@ -1,4 +1,6 @@
 class Board
+  attr_accessor :current_player
+  
   def initialize
     @board = [
       ['.', '.', '.'],
@@ -29,4 +31,7 @@ class Board
   def update_cell(row_index, column_index, value)
     @board[row_index][column_index] = value
   end
+  
+  def winner?
+  end
 end
diff --git a/main.rb b/main.rb
index dedf9f7..4a3c10f 100644
--- a/main.rb
+++ b/main.rb
@@ -6,9 +6,17 @@ player_1 = Player.new(Player::INSIGNIAS[:x], board)
 player_2 = Player.new(Player::INSIGNIAS[:o], board)
 board.current_player = player_1
 
-until board.winner
+until board.winner?
+  puts board.render
+  puts
+  
+  print "Player #{board.current_player.insignia} move - " \
+    "Enter coordinates (e.g. 0,2): "
+  
   coordinates = gets.chomp
   coordinates = board.transform_coordinates(coordinates)
   
   board.current_player.move(coordinates)
+  
+  board.current_player = board.current_player == player_1 ? player_2 : player_1
 end
diff --git a/player.rb b/player.rb
index 8146220..07301f8 100644
--- a/player.rb
+++ b/player.rb
@@ -4,6 +4,8 @@ class Player
     :o => 'O'
   }
   
+  attr_reader :insignia
+  
   def initialize(insignia, board)
     @insignia = insignia
     @board = board
diff --git a/spec/board_spec.rb b/spec/board_spec.rb
index ae1bdd0..09f50e1 100644
--- a/spec/board_spec.rb
+++ b/spec/board_spec.rb
@@ -57,4 +57,7 @@ EOF
       @board.instance_variable_get(:@board)[1][2].must_equal value
     end
   end
+  
+  describe '#winner?' do
+  end
 end
diff --git a/spec/player_spec.rb b/spec/player_spec.rb
index d33ac05..11bfd35 100644
--- a/spec/player_spec.rb
+++ b/spec/player_spec.rb
@@ -13,6 +13,14 @@ describe Player do
     end
   end
   
+  describe '#insignia' do
+    it 'must be the correct insignia' do
+      insignia = Player::INSIGNIAS[:o]
+      player = Player.new(insignia, Board.new)
+      player.insignia.must_equal insignia
+    end
+  end
+  
   describe '#move' do
     before do
       @board = Board.new