Unity -VIVE 开发第一弹

vive 开发之监听手柄
*进行unityVR 开发的时候必定会用到SteamVR插件。SteamVR已经实现了全部的手柄接口。
很显然，我们需要做实际项目的过程中为了能更好的嵌入项目中，不可避免的需要重写监听脚本。
首先提供三种别人的简易监听脚本，之后提供一下自己用到的监听脚本同大家共勉。*

1. 第一种简易的调用–一定要挂载在手柄上才有效（具体原因稍后细说）

using UnityEngine;using System.collections;public class ViveConFirst:MonoBehaviour{    private SteamVR_TrackedObject trackedObject;    private SteamVR_Controller.Device device;    void Start(){    trackedObject=GetComponent<SteamVR_TrackedObject>();    }    void Update(){        device=SteamVR_Controller.Input((int)trackedObject.index);        if(device.GetPressDown(SteamVR_Controller.ButtonMask.Trigger)){            Debug.log("按钮按下")        }        //.......同样的方法进行省略    }}

2.第二种简易调用–直接调用SteamVR 给出的事件

using UnityEngine;using System.collections;public class ViveConSecond:MonoBehaviour{    private SteamVR_Controller device;    void Start(){    device=GetComponent<SteamVR_Controller>();    device.TriggerCliked+=Trigger;    }    void Trigger(object sender,ClickedEventArgs e){        DeBug.log("测试调用扳机事件");    }}

3.第三种简易调用 同第一调用方法类似

using UnityEngine;using System.collections;using Valve.VR;public class ViveConThird:MonoBehaviour{     private Valve.VR.EVRButtonId triggerButton=Valve.VR.EVRButtonId.k_EButton_SteamVR_Trigger;     private SteamVR_TrackedObject trackedObject;    private SteamVR_Controller.Device device;    void Start(){    trackedObject=GetComponent<SteamVR_TrackedObject>();    }    void Update(){        device=SteamVR_Controller.Input((int)trackedObject.index);     if(device.GetPressDown(triggerButton){            Debug.log("按钮按下")        }       }}

具体原因SteamVR 的与Unity 之间存在一定的语法差异，不能用到类似GameObject.Find(类似)查找函数
具体差异请看API
附上封装的的监听函数–（欢迎大家交换意见）

using System.Collections;using System.Collections.Generic;using UnityEngine;using Valve.VR;public class viveEventTest : MonoBehaviour {    public enum ViveInput    {        Grip,        Trigger,        TouchPad,        None    };    public SteamVR_TrackedObject trackedObject;    /// <summary>    /// 抓住    /// </summary>    public ViveInput grab = ViveInput.Grip;    /// <summary>    /// 互动    /// </summary>    public ViveInput interact = ViveInput.Trigger;    /// <summary>    /// 最大震动强度    /// </summary>    private float MAX_VIBRATION_STRENGTH=3999f;    public bool Pressed(string action)    {        ulong rawInput = ConvertString(action);        if (Device() == null) { return false; }        return Device().GetPressDown(rawInput);    }    public bool Released(string action)    {        ulong rawInput = ConvertString(action);        if (Device() == null) { return false; }        return Device().GetPressUp(rawInput);    }    public bool Holding(string action)    {        ulong rawInput = ConvertString(action);        if (Device() == null) { return false; }        return Device().GetPress(rawInput);    }    ulong ConvertString(string action)    {        ViveInput input = GetInputFor(action);        return Decode(input);    }    public SteamVR_Controller.Device Device()    {        if (trackedObject.index == SteamVR_TrackedObject.EIndex.None) { return null; }        return SteamVR_Controller.Input((int)trackedObject.index);    }    ViveInput GetInputFor(string action)    {        switch (action.ToLower())        {            default:            case "grab":                return grab;            case "interact":                return interact;        }    }    ulong Decode(ViveInput input)    {        switch ((int)input)        {            case 0:                return SteamVR_Controller.ButtonMask.Grip;            case 1:                return SteamVR_Controller.ButtonMask.Trigger;            case 2:                return SteamVR_Controller.ButtonMask.Touchpad;            default:            case 3:                return (1ul << (int)EVRButtonId.k_EButton_Max + 1);    ////....................        }    }    // strength is a value from 0-1    /// <summary>    /// 控制手柄震动的函数--需要用的时候引用一下这个函数就可以了。。    /// 至于怎么引用不同的方式不同    /// </summary>    /// <param name="milliseconds"></param>    /// <param name="strength"></param>    public void Vibrate(int milliseconds, float strength)    {        float seconds = milliseconds / 1000f;        StartCoroutine(LongVibration(seconds, strength));    }    IEnumerator LongVibration(float length, float strength)    {        for (float i = 0; i < length; i += Time.deltaTime)        {            Device().TriggerHapticPulse((ushort)Mathf.Lerp(0, MAX_VIBRATION_STRENGTH, strength));            yield return null;        }    }}