I try to load next scene after collision after some time. I am new to unity and i dont get how to manage time in unity. I tried almost everything.

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



void checkFinish(RaycastHit hitInfo)
    {

    if (hitInfo.collider.gameObject.tag == "Finish")
    {

        StartCoroutine(delay());
    }

}

IEnumerator delay()
{
    yield return new WaitForSeconds(2f);
    
    SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex   1);
}

}

Error code always shows up with Assets\Scenes\script\LaserBeam.cs(114,13): error CS0103: The name 'StartCoroutine' does not exist in the current context. Can anyone explain what is wrong with it?

CodePudding user response：

Your code does not appear to be a part of any class that inherits from MonoBehaviour, which is required for the StartCoroutine method.

A simple fix would be encapsulating your code inside a class that inherits from MonoBehaviour. Based on the code, I propose SceneLoader would be a fitting name, but any name would work.

public class SceneLoader : MonoBehaviour
{
    ...
}

There are also some syntax issues with your code, such as incorrectly placed brackets, naming practices, and inefficient tag comparison. I would recommend that you touch on the basics of C# programming in Unity by visiting the plethora of available tutorials.

Overall, a more neatly formatted version of your code would look as follows:

public class SceneLoader : MonoBehaviour
{
    private void CheckFinish(RaycastHit hitInfo)
    {
        if (hitInfo.collider.gameObject.CompareTag("Finish"))
        {
            StartCoroutine(Delay());
        }
    }

    private static IEnumerator Delay()
    {
        yield return new WaitForSeconds(2f);

        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex   1);
    }
}

You could also substitute the Coroutine with an Invoke() method, that takes a delay parameter. But I leave that for you to decide :)