How do I determine if an object has fully rotated

I am creating a minigame similar to Osu's Spinner. Essentially, you have to rotate this object as much as possible in a given time frame, while keeping your mouse within certain bounds. The problem I'm having is calculating how many rotations there are. I was thinking of periodically adding values to an array, then testing each one to see if a difference is greater than 180 degrees. For each difference like this, I would add to a variable and use half of that number as my count, but it seems to convoluted and I'm sure I would mess something up.

Is there some sort of nice way to do this? Thanks in advance.

any good to you ?

Thanks, for anyone with the same problem in the future:

Create a variable which sets itself to the current angle every X seconds (currentAngle)

Then, every tick, add the following to a second variable (deltaAngle ):

angle(0,0,cos(currentAngle-Object.Angle),sin(currentAngle-Object.Angle))

Nice, bookmarking this for the near future. Thanks Weaselmon for sharing ur solution.