使用 IEnumerator 的 Unity GVR Gaze 事件

Question

我正在使用 IEnumerator 作为可以重置的计时器。我设置了一个航点系统，您可以在其中凝视一个航点 n 秒以传送到它。我使用 IEnumerator 作为一种控制时间的方法，并阻止意外的传送。它工作正常，但如果我凝视任何光线投射项目，它会在某处弄乱逻辑，您必须查看然后重新查看一个航点以重新启动它。这个失败也发生在我的航路点的所有实例上，看一个然后看别处再看另一个将无法传送。我正在使用 GVR build 1.70 中的 GVR Laser Pointer 和 GVR Reticle（1.100 构建失败）。

代码：

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

public class Gaze_Waypoints : MonoBehaviour {

public int gazeTime = 3; //the amount of time needed to look to teleport
public GameObject playerCam; //the players camera
private Vector3 waypointPosition; //the position of the current waypoint
private Vector3 playerCamPosition; //the current position of the players camera used for height information
private IEnumerator waypointEnumerator; //my co-routine
private bool startCoRoutine; //is the co-routine running

void Start () {
    waypointPosition = transform.position;  //get the position of the owners waypoint
    waypointEnumerator = waypointTimerEvent (); //set the ienumerator to the relevant function below
    startCoRoutine = true; //testing this out as true or false
}

void Update () {
    playerCamPosition = playerCam.transform.position; //keep track of the players camera, mainly for height info
}

// when I gaze a waypoint
public void PointerEnter() {
    Debug.Log("I entered.");
    if (startCoRoutine) {
        StartCoroutine (waypointEnumerator);
    } else {
        StopCoroutine (waypointEnumerator);
    }
    startCoRoutine = !startCoRoutine;
}

// when I look away
public void PointerExit() {
    Debug.Log("I exited.");
    StopCoroutine (waypointEnumerator);
}

// if I look for 3 seconds teleport the user, if I look away reset the timer
IEnumerator waypointTimerEvent() {
    yield return new WaitForSeconds (gazeTime);
    playerCam.transform.position = new Vector3 (waypointPosition.x, waypointPosition.y + playerCamPosition.y, waypointPosition.z);
    StartCoroutine(waypointEnumerator);
}
}

Answer 1

查看 MonoBehaviour.StartCoroutine 的不同调用

1. public Coroutine StartCoroutine(IEnumerator routine);
2. public Coroutine StartCoroutine(string methodName, object value = null);

案例 1. - 未经测试但显然 您必须在协程中使用循环，例如

while (true){
    yield return new WaitForSeconds(waitTime);
    debug.Log("WaitAndPrint");
}

案例 2. - 稍作修改但测试正常

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

public class Gaze_Timer : MonoBehaviour {

    public int gazeTime = 3; //the amount of time needed to look to teleport
    public GameObject playerCam; //the players camera
    private Vector3 startingPosition;
    private Vector3 changePosition;

    private bool startCoRoutine; //is the co-routine running

    void Start() {
        startingPosition = transform.localPosition;
        changePosition = startingPosition;
        startCoRoutine = false; //testing this out as true or false
    }

    void Update() {
        //...
    }

    // when I gaze 
    public void PointerEnter() {
        Debug.Log("I entered.");
        if (startCoRoutine) {
            StopCoroutine("waypointTimerEvent");
        } else {
            StartCoroutine("waypointTimerEvent", gazeTime);
        }
        startCoRoutine = !startCoRoutine;
    }

    // when I look away
    public void PointerExit() {
        Debug.Log("I exited.");
        if (startCoRoutine) {
            StopCoroutine("waypointTimerEvent");
            startCoRoutine = false;
        }
    }

    IEnumerator waypointTimerEvent(float waitTime) {
        yield return new WaitForSeconds(waitTime);
        Debug.Log("I waited " + waitTime + " seconds");
        GetComponent<Renderer>().material.color = Color.blue;
        changePosition.y += 0.1f;
        transform.localPosition = changePosition;
    }
}