transform.Translate doesn't work when it's in a while loop in Start() function

Questions & Answers
1

Hello citizens.
transform.Translate method doesn’t work when it’s in a while loop in Start() function but it works perfectly when it’s in Update() method. I controlled if it exits while loop by Debug.Log but it doesn’t exit till end. So, I really wonder what my problem is.

void Start()
    {
        length = transform.position.y - GameObject.Find("Finish").transform.position.y;
        while (transform.position.y > GameObject.Find("Finish").transform.position.y)
        { 
            Debug.Log(speed2); //prints the values i expected
            speed2 = 1 + transform.position.y - GameObject.Find("Finish").transform.position.y;
            transform.Translate(Vector3.down * speed2/100, Space.World); //doesn't work
        }
        Debug.Log("Donus");
        while (transform.position.y < 0)
        { 
            Debug.Log(speed2); //prints the values i expected
            speed2 = 1 + transform.position.y - GameObject.Find("Finish").transform.position.y;
            transform.Translate(Vector3.up * speed2/100, Space.World); //doesn't work
        }
    }


    void Update()
    {
        transform.Translate(Vector3.down * speed, Space.World); //works perfectly
    }
2

I’m a bit confused as to why you’re using while loops here and not something like:

Vector3 finishPos = GameObject.Find("Finish").transform.position.y;

if (transform.position.y > finishPos .y)
{
  transform.position = new Vector3(transform.position.x, finishPos .y, transform.position.z);
}

if (transform.position.y < 0f)
{
  transform.position = new Vector3(transform.position.x, 0f, transform.position.z);
}

_
I’m not familiar with the transform.Translate function which is a surprise as I’ve used unity for a few years now! However I reccomend against translating the transform multiple times in a single function.

If you’re trying to have the player gradually move within these bounds on screen it will not work in the start function or in the a while loop. You will need to gradually translate the player in the Update function.

Void Update()

 Vector3 finishPos = GameObject.Find("Finish").transform.position.y; // note - GameObject.Find is inefficient, if you're using the finish position regularly store it at the top of your class to avoid repeating this call.
 
 if (transform.position.y > finishPos .y)
 {
         speed2 = 1 + transform.position.y - finishPos .y;
         Debug.Log(Speed2); // place this after calculating the speed to get the current value!
         transform.Translate(Vector3.up * speed2 * Time.deltaTime, Space.World);
 }

_

The way I usually handle a more complex transform movement (on an object that doesn’t have a character controller) will be to set a Vector3 newPosition or in your case a newTranslation and apply it only once at the end.

_

For gameobjects with character controllers the Move function in the character controller will overwrite your transform adjustment, meaning you’ll need to do all movement via the character controller.

3

Why are you trying to move something by increments on a while loop in the Start() function? The start function is for the first frame of the game, and a while loop will do everything in it in one frame, so you should just do transform.position = where you want it to go.

Either way, try doing transform.position += Vector3.up * speed2/100.
Also, if speed2 is an int, this might be what’s making it not work. do ((float)speed2)/100.
I recently ran into this same problem.

I hope it works! If it does, please “Accept Answer”!