need logic help..

I have this little line which just looks at a player target

Code (CSharp):

1.             Quaternion lookOnlook = Quaternion.LookRotation(player.transform.position - transform.position);
2.             transform.rotation = Quaternion.Slerp(transform.rotation, lookOnlook, lookSpeed);

I been trying to have the rotation only apply on Y and Z and X stays unchanged, but i can't get it to work, anyone can help here?

 

Check out: https://forum.unity.com/threads/freeze-rotation-does-not-let-the-character-spin-what-to-do.523616/

Pretty much the same issue.

Don't want to read?

Code (CSharp):

1.         Quaternion lookOnlook = Quaternion.LookRotation(player.transform.position - transform.position);
2.         lookOnlook.x = transform.rotation.x;
3.         transform.rotation = Quaternion.Slerp(transform.rotation, lookOnlook, lookSpeed);

though this might actually give you a little more control because slerp may still modify the x-axis;

Code (CSharp):

1.         Quaternion lookOnlook = Quaternion.LookRotation(player.transform.position - transform.position);
2.         Quaternion newRotation = Quaternion.Slerp(transform.rotation, lookOnlook, lookSpeed);
3.         newRotation.x = transform.rotation.x;
4.         transform.rotation = newRotation;

It kind of looks l like you have a humanoid character, so you may consider just having it set to a constant value as opposed to getting the previous rotation. So it's always at the right angle.

Code (CSharp):

1.         Quaternion lookOnlook = Quaternion.LookRotation(player.transform.position - transform.position);
2.         Quaternion newRotation = Quaternion.Slerp(transform.rotation, lookOnlook, lookSpeed);
3.         newRotation.x = playerXAxis
4.         transform.rotation = newRotation;

 

You can try something like this:

Code (csharp):

1. Vector3 lookDir = player.transform.position - transform.position;
2. lookDir.y = 0;
3. Quaternion rot = Quaternion.LookRotation(lookDir);
4. // etc..

Though, I'd recommend that you use RotateTowards instead of Slerp; if you wish to use Slerp you should store the start and end rotation and use it ... more properly.

 

His 'lookOnLook' is the end rotation.

Also abandoning slerp for a direct transform modification tends to sacrifice the smoothness which is kind of the goal of slerping I would assume? Maybe give him the benefit of the doubt.

 

It's a misuse of Slerp that everyone has done for a long time but isn't necessary anymore with RotateTowards. You can look in the manual. Slerp was made for a fixed start point and end point. It works like this, but it tapers off as it gets closer and closer to the destination, so it's actually not an even type of rotation. The only reason the thing actually stops rotating is because of roundoff error. I've done it myself and it works all right because computers are so fast your eye can't really see it. RotateTowards is better if you want to move an even amount each time rather than a shrinking percentage.