AimIK

using UnityEngine;
using System.Collections;

//add IK to the first layer in the Animator controller and add a second layer with IK enabled to control the arms

public class AimIK : MonoBehaviour
{
	[Header ("IK Transform References")]

	public Transform ikReference = null;
	public Transform leftHandle = null;
	public Transform rightHandle = null;

	private Vector3 target;
	private Animator animator;

	[Header("IK Weight Values")]
	[Range(0,1)]
	public float aimWeight;
	public float aimAdjustment, bodyWeight, headWeight, eyesWeight, clampWeight;

	// Use this for initialization
	void Start ()
	{
		animator = GetComponent<Animator> ();



	}

	void OnAnimatorIK (int layerIndex)
	{
		        target = ikReference.position;
				target.y = target.y + aimAdjustment;
				animator.SetLookAtPosition (target);
				animator.SetLookAtWeight (aimWeight, bodyWeight, headWeight, eyesWeight, clampWeight);


			if (leftHandle != null) {
				animator.SetIKPosition (AvatarIKGoal.LeftHand, leftHandle.transform.position);
				animator.SetIKRotation (AvatarIKGoal.LeftHand, leftHandle.transform.rotation);
				animator.SetIKPositionWeight (AvatarIKGoal.LeftHand, aimWeight);
				animator.SetIKRotationWeight (AvatarIKGoal.LeftHand, aimWeight);
			}

			if (rightHandle != null) {
				animator.SetIKPosition (AvatarIKGoal.RightHand, rightHandle.transform.position);
				animator.SetIKRotation (AvatarIKGoal.RightHand, rightHandle.transform.rotation);
				animator.SetIKPositionWeight (AvatarIKGoal.RightHand, aimWeight);
				animator.SetIKRotationWeight (AvatarIKGoal.RightHand, aimWeight);
			}
		}

}