How do I make create a rotateable object that follows a raycast hit point?

Question

So I have created a script detecting the point where the raycast hits, and I have been able to instantiate a prefab to that point, but all I wish to do is to be able to rotate this on both the X and the Y axis, as the object that is going to repeadetly spawn/despawn is rotated 90 degrees on the wrong axis. And I also want to be able to rotate it on the Y axis so that I can later on place it.

Any ideas how I can change the rotation of the Quartenion?

Small gif of how it works right now: http://recordit.co/JPxHUsOk5A

Code used:

 var rotation = Quaternion.identity;
 Instantiate(bScript.shelterPrefabMarker, hit.point, rotation);

in the update function.

Answer 1

Best Answer

Answer by Harald921 · Jul 22, 2015 at 02:20 PM

If anyone else stumbles upon this, this is how I solved it (C#):

 tmp.transform.position = hit.point;
 
 if (Input.GetKey(KeyCode.Q))
      tmp.transform.Rotate(0, -rotationSpeed * Time.deltaTime, 0);
 
 else if (Input.GetKey(KeyCode.E))
      tmp.transform.Rotate(0, rotationSpeed * Time.deltaTime, 0);

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Answer 2

Answer by fighder · May 10, 2015 at 08:09 PM

I wouldn't suggest changing the Quaternion, cuz messing around with Quaternion is just not a good idea unless you understand it.

What you can do is the following:

 var temp : GameObject = Instantiate(bScript.shelterPrefabMarker, hit.point, Quaternion.identity) as GameObject;
 
 temp.transform.rotate(90,90,90); //rotate your gameObject

I am not too familiar with javascript syntax, but basically you grab the gameObject that will be spawned with type casting, and then rotate the object.

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Harald921 · May 11, 2015 at 04:36 AM 0

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Okay, thanks, I will try it out later when I get home. The reason I need it rotated is because, I use it as a object detecting collision with different building materials, and when all the variables have reached a certain value, the building is instantiated.. 90 degrees in the wrong x rotation. But many thanks!!

How do I make create a rotateable object that follows a raycast hit point?

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