How do I make a painting look at the player constantly?

I am making a spooky game.

At some point the player walk in front of a portrait and realise

its looking right at him.

I want the portrait to stare at him constantly.

Can you help me make the event sheet to do that part.

I still learn everyday and doesn't find any guide for this.

Thanks in advance.

This is a simple example, I think someone who knows math well can improve the formula.

File *.c3p

What am I supposed to do with that file..?

What am I supposed to do with that file..?

I didn't notice the question was in the Construct2 thread.

But you can open this file in Construct3 and see the mechanics.