HTC VIVE controller script

gistfile1.txt

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

public class WandController : MonoBehaviour
{
    private Valve.VR.EVRButtonId gripButton = Valve.VR.EVRButtonId.k_EButton_Grip;
    private Valve.VR.EVRButtonId triggerButton = Valve.VR.EVRButtonId.k_EButton_SteamVR_Trigger;

    private SteamVR_Controller.Device controller { get { return SteamVR_Controller.Input((int)trackedObj.index); } }
    public SteamVR_TrackedObject trackedObj;

    HashSet<InteractibleItem> objectsHoveringOver = new HashSet<InteractibleItem>();

    private InteractibleItem closestItem;
    private InteractibleItem interactingItem;

    public bool triggerDown, triggerUp, gripDown, gripUp;
    public bool ableToPickup;

    // Use this for initialization
    void Start()
    {
        trackedObj = GetComponent<SteamVR_TrackedObject>();
    }

    // Update is called once per frame
    void Update()
    {
        CheckIfGripDown();
        CheckIfGripUp();
        CheckIfTriggerDown();
        CheckIfTriggerUp();

        if (controller == null)
        {
            Debug.Log("Controller not initialized");
            return;
        }

        if (gripUp)
        {
            float minDistance = float.MaxValue;

            float distance;
            foreach (InteractibleItem item in objectsHoveringOver)
            {
                distance = (item.transform.position - transform.position).sqrMagnitude;

                if (distance < minDistance)
                {
                    minDistance = distance;
                    closestItem = item;
                }
            }

            interactingItem = closestItem;

            if (interactingItem && ableToPickup)
            {
                if (interactingItem.IsInteracting())
                {
                    interactingItem.EndInteraction(this);
                }

                interactingItem.BeginInteraction(this);
            }

            gripUp = false;
        }

        //use to let item fall down
        if (gripDown && interactingItem != null)
        {
            interactingItem.EndInteraction(this);
        }
        
    }

    private void OnTriggerEnter(Collider collider)
    {
        InteractibleItem collidedItem = collider.GetComponent<InteractibleItem>();
        if (collidedItem)
        {
            ableToPickup = true;
            SteamVR_Controller.Input((int)trackedObj.index).TriggerHapticPulse(1000);
            objectsHoveringOver.Add(collidedItem);
        }
    }

    private void OnTriggerExit(Collider collider)
    {
        InteractibleItem collidedItem = collider.GetComponent<InteractibleItem>();
        if (collidedItem)
        {
            ableToPickup = false;
            objectsHoveringOver.Remove(collidedItem);
        }
    }

    //imput checks for tiggers and grip buttons
    void CheckIfTriggerDown()
    {
        if (controller.GetPressDown(triggerButton))
        {
            triggerDown = true;
            triggerUp = false;
        }
    }

    void CheckIfTriggerUp()
    {
        if (controller.GetPressUp(triggerButton))
        {
            triggerDown = false;
            triggerUp = true;
        }
    }

    void CheckIfGripDown()
    {
        if (controller.GetPressDown(gripButton))
        {
            gripDown = true;
            gripUp = false;
        }
    }

    void CheckIfGripUp()
    {
        if (controller.GetPressUp(gripButton))
        {
            gripDown = false;
            gripUp = true;
        }
    }
}