Animator根骨骼运动原始实现代码

实测过确实可行，注意如果没有刚体组件，实现方式会不一样

public class TestSMB : StateMachineBehaviour
{
    public override void OnStateMove(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        Vector3 velocity = animator.deltaPosition / Time.deltaTime;

        var rigidbody = animator.GetComponent<Rigidbody>();

        if (rigidbody != null)
        {
            velocity.y = rigidbody.velocity.y;

            rigidbody.velocity = velocity;
        }
    }
}