InteractableExample.cs

//======= Copyright (c) Valve Corporation, All rights reserved. ===============
//
// Purpose: Demonstrates how to create a simple interactable object
//
//=============================================================================

using UnityEngine;
using System.Collections;

namespace Valve.VR.InteractionSystem
{
    //-------------------------------------------------------------------------
    [RequireComponent( typeof( Interactable ) )]
    public class InteractableExample : MonoBehaviour
    {
        private TextMesh textMesh;
        private Vector3 oldPosition;
        private Quaternion oldRotation;

        private float attachTime;

        private Hand.AttachmentFlags attachmentFlags = Hand.defaultAttachmentFlags & ( ~Hand.AttachmentFlags.SnapOnAttach ) & ( ~Hand.AttachmentFlags.DetachOthers );

        //-------------------------------------------------
        void Awake()
        {
            textMesh = GetComponentInChildren<TextMesh>();
            textMesh.text = "No Hand Hovering";
        }


        //-------------------------------------------------
        // Called when a Hand starts hovering over this object
        //-------------------------------------------------
        private void OnHandHoverBegin( Hand hand )
        {
            textMesh.text = "Hovering hand: " + hand.name;
        }


        //-------------------------------------------------
        // Called when a Hand stops hovering over this object
        //-------------------------------------------------
        private void OnHandHoverEnd( Hand hand )
        {
            textMesh.text = "No Hand Hovering";
        }


        //-------------------------------------------------
        // Called every Update() while a Hand is hovering over this object
        //-------------------------------------------------
        private void HandHoverUpdate( Hand hand )
        {
            if ( hand.GetStandardInteractionButtonDown() || ( ( hand.controller != null ) && hand.controller.GetPressDown( Valve.VR.EVRButtonId.k_EButton_Grip ) ) )
            {
                if ( hand.currentAttachedObject != gameObject )
                {
                    // Save our position/rotation so that we can restore it when we detach
                    oldPosition = transform.position;
                    oldRotation = transform.rotation;

                    // Call this to continue receiving HandHoverUpdate messages,
                    // and prevent the hand from hovering over anything else
                    hand.HoverLock( GetComponent<Interactable>() );

                    // Attach this object to the hand
                    hand.AttachObject( gameObject, attachmentFlags );
                }
                else
                {
                    // Detach this object from the hand
                    hand.DetachObject( gameObject );

                    // Call this to undo HoverLock
                    hand.HoverUnlock( GetComponent<Interactable>() );

                    // Restore position/rotation
                    transform.position = oldPosition;
                    transform.rotation = oldRotation;
                }
            }
        }


        //-------------------------------------------------
        // Called when this GameObject becomes attached to the hand
        //-------------------------------------------------
        private void OnAttachedToHand( Hand hand )
        {
            textMesh.text = "Attached to hand: " + hand.name;
            attachTime = Time.time;
        }


        //-------------------------------------------------
        // Called when this GameObject is detached from the hand
        //-------------------------------------------------
        private void OnDetachedFromHand( Hand hand )
        {
            textMesh.text = "Detached from hand: " + hand.name;
        }


        //-------------------------------------------------
        // Called every Update() while this GameObject is attached to the hand
        //-------------------------------------------------
        private void HandAttachedUpdate( Hand hand )
        {
            textMesh.text = "Attached to hand: " + hand.name + "\nAttached time: " + ( Time.time - attachTime ).ToString( "F2" );
        }


        //-------------------------------------------------
        // Called when this attached GameObject becomes the primary attached object
        //-------------------------------------------------
        private void OnHandFocusAcquired( Hand hand )
        {
        }


        //-------------------------------------------------
        // Called when another attached GameObject becomes the primary attached object
        //-------------------------------------------------
        private void OnHandFocusLost( Hand hand )
        {
        }
    }
}