Calling a function on event

Hello!

I programmed the 4 in line game in ASCII characters. Now, I am creating a visual interface for it, and this brings whole new concepts that I must learn.

I using the openCV library, and with it I was able to draw the game board. This library also has some mouse callback functions that allow me to use the mouse to make a move on the board easily.

But when it comes to the computer making a move on its own, it is not that simple.

I have a variable that changes between 1 and 2, depending on who's turn it is to play. I was wondering if there is any way to call the function that generates the move every time that variable changes to 2 (computers turn).


If maybe you could provide a simple example, for example, a function that prints "Hello" every time a counter changes in some other function (without calling it ofc), I think I could understand and adapt it to my code.

Quote:

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I have a variable that changes between 1 and 2, depending on who's turn it is to play. I was wondering if there is any way to call the function that generates the move every time that variable changes to 2 (computers turn).

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Code:

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if(turn == 2)
  ComputerMove();

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would be the simple call. The definition would be the more complicated part.