Jittering on moving and on collision

Questions & Answers
1

While im moving my cube is jittery and when I touch another collider it bounces

how can I prevent this?

link text

For moving my cube I use moveposition(and lerping )

void FixedUpdate()
{
    if(objectGrabPointTransform != null)
    {
        Vector3 newPosition = Vector3.Lerp(transform.position, objectGrabPointTransform.position, Time.deltaTime * lerpSpeed);
        objectRigidbody.MovePosition(newPosition);
    }
}

is this my culprit? the movepos function?

if so how can i fix it?

should I use velocity instead? if so, how? (I never used it)

2

You could try changing it to Update(), this would increase the speed in which it updates. But personally, I believe the jittering is due to how you are using Lerp. Its easier to understand if I break down what each parameter means…

  1. The Start position
  2. The End position
  3. A number between 0 and 1 where 0 is the start position and 1 is the end position

If you want to use lerp, you need to store the old and new position in a variable and another variable which will increase by your lerpSpeed everytime FixedUpdate() runs. Not tested it, but I believe this should work;

private Vector3 lerpStart = Vector.zero;
private Vector3 lerpEnd = Vector.zero;
private float lerpTime = 0f;

private void FixedUpdate()
{
	lerpTime += lerpSpeed;
	if(objectGrabPointTransform != null)
	{
		 Vector3 newPosition = Vector3.Lerp(lerpStart, lerpEnd, lerpSpeed);
		 objectRigidbody.MovePosition(newPosition);
		 
		 if(objectGrabPointTransform.position != lerpEnd)
		 {
			lerpStart = transform.position;
			lerpEnd = objectGrabPointTransform.position;
			lerpTime = 0f
		 }
	}
}

And in regards to your object going through other colliders, that’s a very well known unity querk. Best to look that one up on Google…

https://forum.unity.com/threads/what-are-the-necessary-settings-to-prevent-objects-passing-through-each-other-at-high-speeds.384519/