Fuel consumption

Unity Engine
1

Hi. I’m looking to setup a fuel system for my game. To where you can eventually run out of fuel. Spacebar fires throttle which is suposed to consume fuel.

Does anyone have some kind of timer script that would allow for this?
Any feedback would be appreciated!

Thanks

2 
var fuelCount : int = 0;

function IncreaseFuel(hit : int)
{
   fuelCount += hit;
}

function DecreaseFuel(hit : int)
{
   if (fuelCount > hit) {
      fuelCount -= hit;
   }
   else {
      OutOfFuel();
   }
}

function OutOfFuel()
{
   // Out of fuel operations
}