koobas.hobune.stream
Clamping a character's head rotation.
Hello, in my game the character's heads rotate to look at the player when they are in talking range, and do so smoothly, which works great!
if (targetPosition && rc.characterInRange == true)
{
Quaternion rotationAngle = Quaternion.LookRotation(targetPosition.position - trackBone.position);
trackBone.rotation = Quaternion.Slerp(trackBone.rotation, rotationAngle, Time.deltaTime * damp);
}
else
{
transform.rotation = Quaternion.Slerp(transform.rotation, originPosistion, Time.deltaTime * damp);
}
But the problem arises when the player goes too far behind them, at which point the neck will more or less crumple up, and so I was wondering- How can I clamp the rotation, preferably not allowing the head to rotate beyond -45 and 45 degrees? I've been googling this over and over but I've gotten stuck each time, unfortunately.
Pretty sure when it goes below 0 it starts and 360 and moves downwards and when above 360 it goes from 0 and upwards, so keep that in kind when clamping, you'll need to do something like this.
public Vector3 ClampRotation(Vector3 angles, float clamp)
{
if (angles.x > 180)
{
if (angles.x < 360-clamp)
{
angles.x = 360-clamp;
}
}
else
{
if (angles.x > clamp)
{
angles.x = clamp;
}
}
if (angles.y > 180)
{
if (angles.y < 360-clamp)
{
angles.y = 360-clamp;
}
}
else
{
if (angles.y > clamp)
{
angles.y = clamp;
}
}
if (angles.z > 180)
{
if (angles.z < 360-clamp)
{
angles.z = 360-clamp;
}
}
else
{
if (angles.z > clamp)
{
angles.z = clamp;
}
}
return angles;
}
And to use it, you would call out after your rotation function has been performed to
transform.localEulerAngles = ClampAngles(transform.localEulerAngles, 45.0f);
Thank you! It is close, but not quite there
It results in this... Which isn't quite what I wanted. I want to limit how much the head can really rotate on the Y axis, something like not looking over their shoulder to find you.
Add an if statement after finding the rotation angle. If its higher then 45 then set it to 45 degrees. If its lower then -45 set it to -45. I think this is all you're looking for?
In the long run it may help to watch some character animation tutorials. Character Setup talks about restricting/clamping muscle space so a character never rotates past that given threshold (~15 minutes in).
