Termination Modules

What we have

We have completed all the steps to be able to play the game.

Considering these steps, we won’t be able to end the game because there is still no check when the game will end.

Requirements of this module

After placing each move, we will have to check for the game’s end. Let’s divide the process into two steps.

• Check for the win

• Check for the tie

Once again, let’s plan the major steps of deciding the termination of the game by implementing the gameEnds() function. We can define the details later while defining the subordinate modules.

• Check if any player wins by probing through the updated board by calling the function checkWin(board, currentPlayer). If the answer is YES (true) then:

  • Display the updated board (because we are not going to display it in the next iteration of the loop).

  • Display a message on the new line “Player X wins” or “Player O wins” as per current player.

  • Return true because the game ends here.

• Check if there is no empty cell on the updated board by calling the function checkTie(board). If the answer is YES (true) then:

  • Display the updated board (because we are not going to display it in the next iteration of the loop).

  • Display a message on the new line “The game is a tie.”.

  • Return true because the game ends here.

• Return false (because the game did not end as per above checks).

Note: We should not worry about the details of subordinate functions (checkWin(board, currentPlayer) and checkTie(board)) at this stage.

Try it yourself

All the functions are already defined. You just have to implement the given function and execute the code.