Problem in Rotating prefab instance around world origin.

Questions & Answers
1

Hi,

I have just started with unity and I have bee trying to create a scene with a tree and flying butterflies around it. I downloaded tree and butterfly from Unity Asset Store. I have everything up and butterflies wings flap is preanimated in models. I have given my prefab instances a Tag named “Butterfly” now I am trying to rotate these butterflies around the tree. I am using Transform.Rotate for this purpose in update fucntion like this :

GameObject[] butterflies = GameObject.FindGameObjectsWithTag("Butterfly");
			Debug.Log("Outside Loop: " + butterflies.Length);
			foreach(GameObject butterfly in butterflies)
			{
				Debug.Log("Found some butterflies with tag: " + butterfly.tag);
				butterfly.transform.Rotate(new Vector3(0.0f, 1.0f, 0.0f), Time.deltaTime * 90.0f,
				                           Space.World);
			}

So no matter whether I use Space.World or Space.self they are only rotating at their place and not around tree. My tree is at origin.

2

You may want to use RotateAround in your case, because Rotate only applies rotation (that is what’s happening to you now) while RotateAround changes both rotation and position around a point:

butterfly.transform.RotateAround(yourTreeTransform.position, yourTreeTransform.up, 90f * Time.deltaTime);