Managing the Game State
There’s one more bit of housekeeping to attend to before you can implement the AI algorithm: You need to keep track of the overall game state. This entails tracking when the game ends and issuing an alert to say who won. Call a method named checkForWin after the imageClicked function that you created in the previous section:
func imageClicked(reco: UITapGestureRecognizer) {// Other code in this method is left out for brevity checkForWin()}
Running your code at this point will cause an error because checkForWin doesn’t exist yet, but you’ll create it shortly.
The checkForWin method scans the game board for winning tile combinations:
func checkForWin(){ var ...
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