一、场景

1，天空盒

2，主角-坦克

3，敌人-进攻的直升机

Target

using UnityEngine;
using System.Collections;
//此脚本挂在直升机上
[RequireComponent(typeof(Collider))]
public class Target : MonoBehaviour,IGvrGazeResponder {

    private const float IntervalTime = 2;//攻击间隔
    private float realInterval = 0;
    public GameObject m_LaserCannon_Prefab;
    public GameObject explosion;

    private void shootPlayer()
    {
        if (realInterval < IntervalTime)
        {
            realInterval += Time.deltaTime;
            return;
        }
        realInterval = 0;
        Transform player = Camera.main.transform;
        Transform start = this.transform;
        Quaternion goal = Quaternion.FromToRotation(Vector3.zero, -player.position +start.position);
        
        GameObject go = GameObject.Instantiate(m_LaserCannon_Prefab, start.position,goal) as GameObject;
        GameObject.Destroy(go, 5f);
    }

    // Use this for initialization
    void Start () {
        SetGazedAt(false);
    }

    void LateUpdate()
    {
        GvrViewer.Instance.UpdateState();
        if (GvrViewer.Instance.BackButtonPressed)
        {
            Application.Quit();
        }
    }
    // Update is called once per frame
    void Update () {
        shootPlayer();
    }

    public void SetGazedAt(bool gazedAt)
    {
       //可以实现一些计时，或赋于盯更多意义等的操作
    }

    #region IGvrGazeResponder implementation

    /// Called when the user is looking on a GameObject with this script,
    /// as long as it is set to an appropriate layer (see GvrGaze).
    public void OnGazeEnter()
    {
        Debug.Log("in");
        SetGazedAt(true);
    }

    /// Called when the user stops looking on the GameObject, after OnGazeEnter
    /// was already called.
    public void OnGazeExit()
    {
        SetGazedAt(false);
    }

    /// Called when the viewer's trigger is used, between OnGazeEnter and OnGazeExit.
    public void OnGazeTrigger()
    {
        //TeleportRandomly();
    }

    #endregion


    void OnTriggerEnter(Collider e)
    {
        if (e.gameObject.tag.CompareTo("tagDestroyBall") == 0)
        {
            GvrAudioSource audio = this.gameObject.GetComponent<GvrAudioSource>();
            audio.PlayOneShot(audio.clip);
            GameObject go = GameObject.Instantiate(explosion) as GameObject;
            go.transform.position = this.transform.position;
            go.transform.rotation = this.transform.rotation;
            GameObject.Destroy(go, 1.5f);
            GameObject.Destroy(this.gameObject, 1.5f);
            Destroy(e.gameObject);//销毁加速球  
        }
    }  
}

4、炮弹和爆炸效果

敌方炮弹

ShotBehavior

using UnityEngine;
using System.Collections;

//此脚本挂在预制体shot_prefabs
public class ShotBehavior : MonoBehaviour {

    private Vector3 target ;

    // Use this for initialization
    void Start () {
        Transform player = Camera.main.transform;

        this.gameObject.transform.LookAt(player);
        Transform start = this.transform;
        target = player.position - start.position;
        target = target + new Vector3(0, -0.3f);
    }
    
    // Update is called once per frame
    void Update () {
        transform.position += target * Time.deltaTime * 1f;
    
    }
}

主角炮弹

using UnityEngine;
using System.Collections;

//此脚本挂在预制体shot_prefabs
public class ShotBehavior : MonoBehaviour {

    private Vector3 target ;

    // Use this for initialization
    void Start () {
        Transform player = Camera.main.transform;

        this.gameObject.transform.LookAt(player);
        Transform start = this.transform;
        target = player.position - start.position;
        target = target + new Vector3(0, -0.3f);
    }
    
    // Update is called once per frame
    void Update () {
        transform.position += target * Time.deltaTime * 1f;
    
    }
}

CannonBehavior

using UnityEngine;
using System.Collections;

public class CannonBehavior : MonoBehaviour {

    public Transform m_cannonRot;
    public Transform m_muzzle;
    public GameObject m_shotPrefab;

    // Use this for initialization
    void Start () 
    {
    
    }
    
    // Update is called once per frame
    void Update () 
    {
        if (Input.GetKeyDown(KeyCode.Space)||(Input.GetMouseButtonDown(0)))
        {
            Shoot();
        }
    }
    public void Shoot()
    {
        GameObject go = GameObject.Instantiate(m_shotPrefab, m_muzzle.position, m_muzzle.rotation) as GameObject;
        GameObject.Destroy(go, 5f);
    }

}

二、交互

1、盯

2、单击

三、展示效果