How can I change the value of a Float smoothly?

Question

Its might be kinda a silly, but I can't seem to get it to work. What I want is for my float to go to its new value over time, check:

 var Speed : float = 0;
 
 function Called(){
 
 Speed  = 100; 
 
 //I would like this to happen smoothly, however, I would also like to change back to say 40 if I call it later.
 
 yield WaitForSeconds(2);
 Speed = 40;
 
 // So the first time its changed from 0 tot 100, and the second time from 100, 40, how can I make this smooooothhh?
 }

Thanks!

Answer 1

Answer by doublemax · Sep 06, 2016 at 02:32 PM

   IEnumerator ChangeSpeed( float v_start, float v_end, float duration )
   {
     float elapsed = 0.0f;
     while (elapsed < duration )
     {
       speed = Mathf.Lerp( v_start, v_end, elapsed / duration );
       elapsed += Time.deltaTime;
       yield return null;
     }
     speed = v_end;
   }

Call it with:

 StartCoroutine( ChangeSpeed( 100f, 40f, 2f ) );

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How can I change the value of a Float smoothly?

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