unity3d - 如何统一等待特定秒数

Question

我想通过每 1 秒实例化 7 个立方体来在 unity 2d 游戏中制作一个加载条。我用了 : yield WaitForSeconds(1);在每个实例化语句之后的函数更新中，但它不起作用:((我得到一个错误:

Script error : Update() can not be a coroutine.

还有其他想法吗？

我制作了一个新场景并将其命名为“丢失”然后我编写了这个脚本并将其附加到主摄像头:

#pragma strict

//var loadingBar: Transform;
var loading_bar : GameObject;

function Update()
{
    Instantiate(loadingBar,Vector3(-1.849,-2.9371,2),Quaternion.identity);

    gameTimer();


    Instantiate(loadingBar,Vector3(-1.2909,-2.937,2),Quaternion.identity);

    gameTimer();

    Instantiate(loadingBar,Vector3(-0.5566,-2.93711,2),Quaternion.identity);

    gameTimer();

    Instantiate(loadingBar,Vector3(0.148236,-2.93711,2),Quaternion.identity);

    gameTimer();

    Instantiate(loadingBar,Vector3(0.823772,-2.93711,2),Quaternion.identity);

    gameTimer();

    Instantiate(loadingBar,Vector3(1.440567,-2.93711,2),Quaternion.identity);

    gameTimer();

    Instantiate(loadingBar,Vector3(2.057361,-2.93711,2),Quaternion.identity);

    loadingTimer();

    Application.LoadLevel(1);
}


function OnGUI()
{
    GUI.color = Color.green;
    GUI.Label(Rect(400,350,500,500),"<color=green><size=100>Lose</size></color>");
}

function loadingTimer()
{
    yield WaitForSeconds(1);
}

I want to these cubes to appear after each other by 1 second so it will seem like a loading bar ...

我是这样解决这个问题的::

#pragma strict

var loadingBar: Transform;
var finished : boolean = false;

function Update()
{
    loadingTimer();

    if (finished == true)
    {
        Application.LoadLevel(1);
        finished= false;
    }
}


function OnGUI()
{
    GUI.color = Color.green;
    GUI.Label(Rect(295,320,500,500),"<color=green><size=100>Lose</size></color>");

}


function loadingTimer()
{
    Instantiate(loadingBar,Vector3(-1.9,-2.9371,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(-1.3,-2.937,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(-1.3,-2.937,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(-0.7,-2.93711,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(-0.1,-2.93711,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(0.5,-2.93711,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(1.1,-2.93711,2),Quaternion.identity);
    yield WaitForSeconds(0.28);
    Instantiate(loadingBar,Vector3(1.7,-2.93711,2),Quaternion.identity);

    finished= true;
}

Answer 1

首先，您不能在 Update 函数中使用 yield WaitForSeconds。您需要导入 IEnumator。对于您的情况，我可以说以下代码可能对您有所帮助。

public class Loader : MonoBehaviour 
{
    public GameObject cube;
    private bool finished = false;
    private Vector3[] positions = new Vector3[7] {new Vector3(-1.849,-2.9371,2), new Vector3(-1.2909,-2.937,2), new Vector3(-0.5566,-2.93711,2),new Vector3(0.148236,-2.93711,2),new Vector3(0.823772,-2.93711,2),new Vector3(1.440567,-2.93711,2),new Vector3(2.057361,-2.93711,2)};
    private int loaderCounter=0;

    void Start () 
    {
        StartCoroutine(StartLoader());
    }

    IEnumerator StartLoader () 
    {
        Instantiate(cube,positions[loaderCounter],Quaternion.identity);
        yield return new WaitForSeconds(1);
        loaderCounter++;
        if(loaderCounter==7)
        {
            finished=true;
        }
        if(!finished)
        {
            StartCoroutine(StartLoader());
        }
        else
        {
            Application.LoadLevel(1);
        }
    }
}

此后如果有任何问题，请告诉我。只需使用变量声明的 javascript 语法。