How to make an object move without assigning a rigidbody to it

Question

I have a gameobject that goes up and down by itself. The code is very simple

  void FixedUpdate ()
 {
     rb.velocity = new Vector2(rb.velocity.x, dir);
     
     if (transform.position.y > start)
         dir = Mathf.Abs(dir) * -1;

     else if (transform.position.y < end)
         dir = Mathf.Abs(dir);
 }

However, I don't like the fact that it has a rigidbody, because I don't want its movement to be affected when another object eventually collides with it. So would it be possible for the object to continue moving up and down by itself without a rigidbody?

EDIT

Thanks to MT369MT for the solution

I simply replaced

  rb.velocity = new Vector2(rb.velocity.x, dir);

with

   transform.Translate(Vector2.up * speed);

Answer 1

Best Answer

Answer by MT369MT · Nov 29, 2017 at 07:28 PM

Hi, Try using transform.Translate that doesn’t need a rigidbody.

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sean244 · Nov 29, 2017 at 08:11 PM 0

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Thanks. Worked Perfectly :)

MuttlyMartin · Sep 26, 2021 at 04:13 PM 0

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how would you get that to move smoothly though? iv done a similar thing with translate and it seems to snap to positions

this.gameObject.transform.Translate(Vector3.down theMadHatAttacks.attackValueUp Time.deltaTime);

also it keeps moving slightly as it runs though it with IEnumrators thats probably because its slightly out of place with its starting position though

Legacy_Primo MuttlyMartin · Mar 18, 2022 at 03:05 PM 0

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Would Time.fixedDeltaTime work for it?

How to make an object move without assigning a rigidbody to it

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