Random switch enum with a delay

Questions & Answers
1

I have this script( i whant when it happends like 15 seconds the enum type switch to cloudy and in cloudy when its happend 10 seconds switchs to sunny )
I want that loop to repeat all the time.

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

public class CloudSystem : MonoBehaviour
{
    public enum SkyType {Sunny,Cloudy};
    public SkyType skyType;

    public float changeSpeed = 0.01f;
    private float cutOff;

    public Material cloudMaterial;

    private void Start()
    {
        cloudMaterial.SetFloat("_CutOff", 0); //Sets the cloudMaterial CutOff to 0 in the Start;

        cutOff = cloudMaterial.GetFloat("_CutOff"); //Get the CutOff value to cutOff
    }

    void Update()
    {
        //Can Switch between Skys
        switch (skyType) 
        {
            case SkyType.Cloudy:
                Cloudy();
                break;

            case SkyType.Sunny:
                Sunny();
                break;
        }
    }

    void Cloudy()
    {
        cutOff = Mathf.MoveTowards(cutOff, 0.35f, changeSpeed * Time.deltaTime);
        cloudMaterial.SetFloat("_CutOff", cutOff);
    }

    void Sunny()
    {
        cutOff = Mathf.MoveTowards(cutOff, 0, changeSpeed * Time.deltaTime);
        cloudMaterial.SetFloat("_CutOff", cutOff);
    }
}
2

First, currently your start function can simply be this

     private void Start()
     {
         Sunny();
     }

You should also make cutoff a function variable, instead of a private variable.

Now, you should probably use Coroutines for this, something like

IEnumerator WeatherCoroutine()
{
    while (true)
    {
        Sunny();
        yield return new WaitForSeconds(15f);
        Cloudy();
        yield return new WaitForSeconds(10f);
    }
}

To call this, simply remove the update code and change start to

     private void Start()
     {
         StartCoroutine(WeatherCoroutine());
     }

Now instead of hardcoded time values, you can have two public variables for the sunny duration and the cloudy duration, that are used inside the coroutine to set the wait duration.