Allowing MouseLook during Mecanim Animation

I want to allow the player character to look around while still playing animations on the same character.

• I can get it to work (sort of) by posing my character's head bone in LateUpdate() (w/ update mode set to normal). However, this causes the head occasionally jerk in an unwanted direction.

• I tried doing it via a "Body Mask" in which I excluded the head and neck bones from the animator controller's base layer, but the animator controller *still* gets applied to the head and neck bones. Is this a bug or can I not use masks on the base layer?

 

The purpose of Body Mask is to play more than one animation on a single skinmesh, not to override a bone position/rotation in script.

What you need is Animator.SetIKRotation or Animator.SetBoneLocalRotation.

For the head you need SetBoneLocalRotation.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class IkConstraint : MonoBehaviour
5. {
6.     private Animator animator;
7.     private Transform headTransform;
8.     public Transform target;
9.  
10.     void Start()
11.     {
12.         animator = GetComponent<Animator>();
13.         headTransform= animator.GetBoneTransform(HumanBodyBones.Head);
14.     }
15.  
16.     void OnAnimatorIK(int layerIndex)
17.     {
18.         Vector3 dir = (target.position - headTransform.position); // world space target direction
19.         dir = headTransform.InverseTransformDirection(dir); // to head local space target direction
20.         Quaternion headRot = Quaternion.LookRotation(dir); // Get local quaternion
21.  
22.         animator.SetBoneLocalRotation(HumanBodyBones.Head, headRot); // apply to bone
23.     }
24. }