SmoothDamp Problem/If Statement Inequality Problem [Solved]

Unity Engine
1

Ok, so, what is happening is, i SmoothDamp a number, and then it reaches its goal. When i check that its reached its goal with an if statement, it evaluates to false sometimes, even after its reached its goal.

Script:

var yVel = 0.0;
	
var smoothPos = Mathf.SmoothDamp(transform.position.y, 
		initialPos - (height + .1), yVel, .01);
	transform.position.y = smoothPos;
	
	if (transform.position.y == (initialPos - (height + .1)))
	{
		//renderer.enabled = false;
		isActive = false;
		deactivating = false;
	}

The position ends up being the desired value (In this case: initialPos - (height + .1) )

Most often the if statement evaluates to false once the smooth is done.

And to verify i even tried debugging by printing the transform.position.y and the (initialPos - (height + .1)) and they are indeed equal once the smooth is finished. Yet the if statement evaluates to false. Lol.

Any help would be greatly appreciated. Thanks!

2

You’re dealing with floating point numbers. As such, you have a good chance that the numbers will be a tiny tiny bit off, and thus not perfectly equal. You need to check if they’re within something like .0001 of each other.

3

Agreed. Lol. Totally slipped my mind, rule of thumb, never compare floats! Lol, forgot about that one ;). Anyways, for anyone else looking, solved not by rounding or truncating as everyone always seems to suggest (its hard to control whether to round up/down and then comparing them might be bad if they both just round down but arent originally close enough to the accuracy you want etc), i used Mathf.Approximately(f1, f2)

Thanks!