yield return new 조건으로 wait 하기 WaitUntil, WaitWhile

WaitUntil

Description

Suspends the coroutine execution until the supplied delegate evaluates to true. (이건 조건이 true 면 WaitUntil 종료)

WaitUntil can only be used with a yield statement in coroutines.

Supplied delegate will be executed each frame after script MonoBehaviour.Update and before MonoBehaviour.LateUpdate. When the delegate finally evaluates to true, the coroutine will proceed with its execution.

using UnityEngine;
using System.Collections;

public class WaitUntilExample : MonoBehaviour
{
    public int frame;

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

    IEnumerator Example()
    {
        Debug.Log("Waiting for princess to be rescued...");
        yield return new WaitUntil(() => frame >= 10);
        Debug.Log("Princess was rescued!");
    }

    void Update()
    {
        if (frame <= 10)
        {
            Debug.Log("Frame: " + frame);
            frame++;
        }
    }
}

Constructors

WaitUntil

Initializes a yield instruction with a given delegate to be evaluated.

Inherited Members

Properties

keepWaiting

Indicates if coroutine should be kept suspended.

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WaitWhile

Description

Suspends the coroutine execution until the supplied delegate evaluates to false.  (이건 조건이 false 이면 WiatWhile 종료)

WaitWhile can only be used with a yield statement in coroutines.

The supplied delegate will be executed each frame after MonoBehaviour.Update and before MonoBehaviour.LateUpdate. When the delegate finally evaluates to false, the coroutine will proceed with its execution.

using UnityEngine;
using System.Collections;

public class WaitWhileExample : MonoBehaviour
{
    public int frame;

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

    IEnumerator Example()
    {
        Debug.Log("Waiting for prince/princess to rescue me...");
        yield return new WaitWhile(() => frame < 10);
        Debug.Log("Finally I have been rescued!");
    }

    void Update()
    {
        if (frame <= 10)
        {
            Debug.Log("Frame: " + frame);
            frame++;
        }
    }
}

Constructors

WaitWhile

Initializes a yield instruction with a given delegate to be evaluated.

Inherited Members

Properties

keepWaiting

Indicates if coroutine should be kept suspended.

ref : https://docs.unity3d.com/ScriptReference/WaitWhile.html

ref : https://docs.unity3d.com/ScriptReference/WaitUntil.html