OVRHand,cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;

public class OVRHand : MonoBehaviour {

	private GameObject holdPosition;
	private OVRInput.RawButton whichHand; 
	public Transform haveItem;
	public OVRHand      otherHand;
	public OVRInput.Controller whichController;

	private void Awake () {
		if (whichController ==  OVRInput.Controller.RTouch) {
			whichHand = OVRInput.RawButton.RHandTrigger;
		}

		if (whichController == OVRInput.Controller.LTouch) {
			whichHand = OVRInput.RawButton.LHandTrigger;
		}
	}

	// Use this for initialization
	void Start () {
		holdPosition = transform.GetChild (0).gameObject;
	}
	
	// Update is called once per frame
	void Update () {
		if (haveItem != null) {
			if (OVRInput.GetUp (whichHand)) {
				Release ();
			}
		}
	}

	void OnTriggerStay (Collider col) {
		if (haveItem == null) {
			if (col.gameObject.tag == "holdable") {
				if (OVRInput.GetDown (whichHand)) {
					if (col.transform == otherHand.haveItem) {
						otherHand.haveItem = null;
					}

					Hold (col.gameObject);
				}
			}
		}
	}

	public void Hold (GameObject obj) {
		haveItem = obj.transform;
		Rigidbody rb = obj.GetComponent<Rigidbody> ();
		rb.isKinematic = true;
		rb.useGravity = false;
		obj.transform.position = holdPosition.transform.position;
		obj.transform.parent = holdPosition.transform;
	}

	public void Release () {
		haveItem.parent = null;
		Rigidbody rb = haveItem.GetComponent<Rigidbody> ();
		rb.isKinematic = false;
		rb.useGravity = true;
		rb.velocity = OVRInput.GetLocalControllerVelocity (whichController);
		haveItem = null;
	}
}