使用Unity开发VR基本步骤

一、导入VR插件

这里用到的插件是  SteamVR 1.2.3  与   VRTK 3.3.0

在unity中首先导入SteamVR 1.2.3，再导入VRTK 3.3.0，可以避免一些错误

可以直接拖动unitypackage包到unity中，也可以通过窗口Assets->Import Package->CustomPackage，选择要导入的内容，会弹出以下界面，直接点击Import按钮即可

另外要在ProjectSettings中设置一下，导入XR

二、使用插件搭建VR环境

找到  [VRTK_SDKManager]  预制件，将其拖入场景中，接着可以按照下图中这种层级，创建空物体

在LeftHand和RightHand物体上面添加基本的组件，如下图所示，如果有UI界面，则需要在Canvas上添加 VRTK_UICanvas 组件

然后将LeftHand和RightHand分别放到[VRTK_SDKManager] 的组件中，如下图所示

再创建一个脚本放置到LeftHand和RightHand上面，来控制交互实现

例如我这里写了一个HandPressed.cs脚本

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

public class HandPressed : MonoBehaviour
{

    private VRTK_ControllerEvents vrtk_Controller;
    private VRTK_Pointer vrtk_Point;

    void Start()
    {
        vrtk_Controller = GetComponent<VRTK_ControllerEvents>();//获取手柄事件组件
        vrtk_Controller.TriggerPressed += VRTK_Controller_TriggerPressed;//按下扳机键
        vrtk_Controller.TriggerReleased += VRTK_Controller_TriggerReleased;//松开扳机键
        vrtk_Controller.ButtonTwoPressed += VRTK_Controller_ButtonTwoPressed;//按下菜单键
        vrtk_Controller.TouchpadPressed += VRTK_Controller_TouchpadPressed;//按下圆盘键
        vrtk_Controller.TouchpadReleased += VRTK_Controller_TouchpadRelease;//松开圆盘键

        vrtk_Point = GetComponent<VRTK_Pointer>();//获取射线组件
        vrtk_Point.DestinationMarkerHover += VRTKPoint_DestinationMarkerHover;//射线触碰事件
    }
    /// <summary>
    /// 手柄圆盘键松开
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void VRTK_Controller_TouchpadRelease(object sender, ControllerInteractionEventArgs e)
    {
        //这里写手柄圆盘键松开时要响应的事件
    }
    /// <summary>
    /// 手柄圆盘键按下
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void VRTK_Controller_TouchpadPressed(object sender, ControllerInteractionEventArgs e)
    {
        //这里写手柄圆盘键按下时要响应的事件
    }
    /// <summary>
    /// 手柄射线触碰
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void VRTKPoint_DestinationMarkerHover(object sender, DestinationMarkerEventArgs e)
    {
        
    }
    /// <summary>
    /// 手柄菜单键按下
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void VRTK_Controller_ButtonTwoPressed(object sender, ControllerInteractionEventArgs e)
    {
        //这里写手柄菜单键按下时要响应的事件
    }

    /// <summary>
    /// 手柄扳机键松开
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void VRTK_Controller_TriggerReleased(object sender, ControllerInteractionEventArgs e)
    {
        //这里写手柄扳机键松开时要响应的事件
    }

    /// <summary>
    /// 手柄扳机键按下
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void VRTK_Controller_TriggerPressed(object sender, ControllerInteractionEventArgs e)
    {
        //这里写手柄扳机键按下时要响应的事件
    }

    
}

以上即是实现交互的基本步骤，如有需完善或错误的地方，欢迎指正