movement falloff

Questions & Answers
1

Hi, I am trying to add a sort of falloff to my movement and this is a piece of it's code:

var moveSpeed = 6;
for(x=moveSpeed;x>=0;x--)

This code seems to be executing all at once(or too fast) and the GameObject is moving 21 units instead of 6, then 5, then 4, down to 0. How could I recode this so that there is a seemingly gradual deduction, or possibly at decimal values so its smooth?

Thanks

2

The problem with your code is that there's no reference to any type of external time variable, so it's going to execute as quickly as your computer can calculate it - which is very fast...

If you really want it executing in a loop, the way to do it is:

var moveSpeed : float;
var moveDistance : float;

    for (x = moveDistance; x < 0; x -= moveSpeed * Time.deltaTime){
        yield;
    }

Also, if you want a falloff that's not really a very good way of doing it.

Use Lerp or Slerp for falloff movement, or look into the excellent iTween class at http://itween.pixelplacement.com/index.php

Using iTween, you can simply use

var finalPos : Vector3;
var moveSpeed : float;
iTween.MoveTo(gameObject, {"time": moveSpeed, "easetype": OutQuad, "position": finalPos});
3

Were you using the for loop as a way to compute for your "falloff"? If so, you could also try putting the calculation in your Update() function instead:

moveSpeed -= Time.deltaTime * [some constant/variable for dampening];

This way, the calculation would not entirely be dependent on how fast the cpu can execute your loop. If you really wanted it in a loop then chief1234's answer is the way to go.