Time for action – designer to player. Come in, player.

Most people over the age of zero know how to play Tic Tac Toe, but just to be safe, let's rig up a down-and-dirty onscreen prompt to let the players know whose turn it is.

1. Create a new GUI Text.

2. Position it at 0,1,0 with a font size of 36.

3. Rename it as Prompt.

   

4. Store a reference to it in the GameLogic script:

   var XPiece:GameObject;
   var OPiece:GameObject;
   var currentPlayer:int = 1;
   var prompt:GUIText;
   

5. Save the script.

6. Select the GameLogic GameObject.

7. Drag the Prompt GUIText GameObject into the prompt variable of GameLogic in the Inspector panel.

   

8. Back in the GameLogic script, create a function, as follows, to show the players whose /turn it is:

   function ShowPlayerPrompt()
   {
     if(currentPlayer == 1)
     {
       prompt.text = "Player 1, place an X.";
     } else {
       prompt.text = "Player 2, place an O.";
     }
   }
   

9. Call this function at the beginning of the game, and again after a move is made.

   function Start ()
   {
     ShowPlayerPrompt();
   }

   and later:

   function ClickSquare...