How do I create a countdown timer upon collision?

So, I want to collide with an item, and then it will start a countdown timer on my UI.

I already have the timer that works on collision - but the problem is that it doesn't restart when I collide again - and it doesn't stop when it gets to 0.

I'm basically turning a light on, and I need the player to know how long is left before the light turns off.

Are you using Timer behavior? You can add it to the LightSwitch for example.

Player on collision with LightSwitch -> turn light on; LightSwitch start timer "TurnOff" for 5 seconds

LightSwitch on Timer "TurnOff" -> turn light off

If you collide with the LightSwitch again while the timer is still running, it will be restarted for 5 seconds again.

I see - that works - but now my timer countdown doesn't work. Is there a simple way to add a text countdown?

Thanks!

You can use Timer expressions CurrentTume and Duration:

remainingTime = LightSwitch.Timer.Duration("TurnOff") - LightSwitch.Timer.CurrentTime("TurnOff")