VR 获取EyeController的关注事件

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1. 创建一个LookPoint指示点

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LookPoint配置信息
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Image配置信息
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调整Image的Rotation Z 为-180度, 为了接下来的进度条符合大家所熟悉的顺时针慢慢填满.

这里需要先创建一个 Sprite, 称之为lookPoint, 也就是EyeController的焦点位置
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这里Material 使用的shader如下,目的是为了让这个指示点始终显示, 即使被物体遮挡.
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创建好LookPoint之后, 运行,你会发现视线中心有一个圆圈指示点, 调整Panel的 scale ,让圆圈显示到合适大小, 接下来在代码里处理EyeController的关注事件

2 获取EyeController的关注事件

using UnityEngine;using System.Collections;using UnityEngine.UI;public class EyeController : MonoBehaviour {    public GameObject cameraRig;    public GameObject image;    public Sprite initSprite;    public Sprite watchingSprite;    // Use this for initialization    private Image img;    private bool isWatching;    private string lastObjName;    private GameObject lastWatchedObj;    public delegate void WatchingObjectDelegate();    public static event WatchingObjectDelegate watchingObject;    void Start () {         img = image.GetComponent<Image>();    }    // Update is called once per frame    void Update()    {        //射线        Ray ray = new Ray(this.transform.position, transform.forward );        RaycastHit hit;//存储发射射线后产生的碰撞信息hit.point /hit.distance /hit.collider        //发生碰撞        if (Physics.Raycast(ray, out hit, Mathf.Infinity))        {            WatchableObject obj = hit.collider.gameObject.GetComponent<WatchableObject>();            if (obj && obj.enabled == true)//有WatchableObject组件的物体,并且组件有效            {                if(lastObjName == obj.name)//为同一个物体                {                    img.sprite = watchingSprite;                    if (!isWatching)//第一次进入视野                    {                        if (obj.gameObject.GetComponent<TeleportPointObject>() == null)//如果不是TeleportPoint                        {                            cloneObject(obj);                        }                        img.fillAmount = 0f;                        isWatching = true;                    }                    else                    {                        if (img.fillAmount < 1f)                        {                            img.fillAmount += 0.00833333333f;                        }                        else                        {                            destroyCloneObj();                            //注视时间1.5s后                            if (obj.gameObject.GetComponent<TeleportPointObject>() != null)//如果是TeleportPoint                            {                                //cameraRig.transform.position = obj.transform.position;                                Vector3 vec = transform.position - cameraRig.transform.position; //先计算偏移量                                Vector3 newPos = obj.transform.position;//获取新的position                                newPos.y = transform.position.y;//Eye的Y值并不改变                                transform.position = newPos;//设置Eye的新position                                cameraRig.transform.position = transform.position - vec;//调整cameraRig的position,防止定位重新改变Eye的位置                            }                            if (EyeController.watchingObject == null)                            {                                EyeController.watchingObject += obj.WatchingObjectDelegate;                            }                            watchingObject();                        }                    }                }else                {                    lastObjName = obj.name;                    initImage();                    destroyCloneObj();                    if(EyeController.watchingObject != null)                    {                        EyeController.watchingObject -= obj.WatchingObjectDelegate;                    }                }            }else//为其他Collider ,但是没有WatchableObject组件            {                initImage();                destroyCloneObj();                EyeController.watchingObject = null;            }        }else//没有碰撞        {            initImage();            destroyCloneObj();            EyeController.watchingObject = null;        }    }    //还原image为初始状态    private void initImage()    {        if (img.type == Image.Type.Filled)        {            img.fillAmount = 1f;            img.sprite = initSprite;        }        isWatching = false;    }    //克隆物体     private void cloneObject(WatchableObject collidedItem)    {        GameObject cloneObj = Object.Instantiate(collidedItem.transform.gameObject, collidedItem.transform.position, collidedItem.transform.rotation) as GameObject;        if (collidedItem.transform.parent)        {            cloneObj.transform.SetParent(collidedItem.transform.parent);            cloneObj.transform.localScale = collidedItem.transform.localScale;        }        foreach (Component comp in cloneObj.GetComponents<Component>())        {            if (!(comp is Transform) && !(comp is Renderer))            {                Destroy(comp);            }        }        Shader shader = Shader.Find("Valve/VR/Silhouette");        Material material = new Material(shader);        material.name = "silhouette";        material.SetColor("g_vOutlineColor", Color.green);        cloneObj.GetComponent<Renderer>().material = material;        lastWatchedObj = cloneObj;    }    //销毁克隆的物体    private void destroyCloneObj()    {        if (lastWatchedObj)        {            Destroy(lastWatchedObj);        }    }}

EyeController

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