Time for action – to catch a competitor

Combine these two separate function calls:

 square = Win();
  if(square == null) square = Block();
  if(square == null) square = CreateTrap();
  if(square == null) square = PreventTrap();

into this unified call:

 square = Win();
  if(square == null) square = Block();
  if(square == null) square = PreventOrCreateTrap();

The PreventOrCreateTrap function is very straightforward:

function PreventOrCreateTrap():GameObject
{
  var aP1Corners:List.<GameObject> = new List.<GameObject>(); 
    // Create an empty list to store X-controlled corners
  var aP2Corners:List.<GameObject> = new List.<GameObject>(); 
    // Create an empty list to store O-controlled corners
  var aOpenCorners:List.<GameObject> = new List.<GameObject>(); 

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