steeplechase/unity/Assets/Scripts/Cloud.cs

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

public class Cloud : MonoBehaviour
{
    [SerializeField] GameObject _lightning;
    [SerializeField] List<Sprite> _sprites;
    float _timeToHideLightning = 0f;
    float _lightningTimeout = 0f;
    float _timeToRandomStrike;
    const bool DO_RANDOM_STRIKES = true;

    // Start is called before the first frame update
    void Start()
    {
        ReInit();
        HideLightning();
        SetTimeForNextRandomStrike();
    }

    // Update is called once per frame
    void Update()
    {
        const float SPEED = 1f;
        this.transform.position = new Vector3(transform.position.x - SPEED, transform.position.y, transform.position.z);

        _lightningTimeout -= Time.deltaTime;
        _timeToHideLightning -= Time.deltaTime;
        _timeToRandomStrike -= Time.deltaTime;

        if (_timeToHideLightning < 0f)
        {
            HideLightning();
        }

        if (_timeToRandomStrike < 0f && DO_RANDOM_STRIKES)
        {
            TriggerLighting(_lightning.transform.position.x);
            SetTimeForNextRandomStrike();
        }
    }
    
    void SetTimeForNextRandomStrike()
    {
        _timeToRandomStrike = Random.Range(4f, 10f);
    }

    private void HideLightning()
    {
        _lightning.SetActive(false);
        _timeToHideLightning = float.MaxValue;
    }

    public void ReInit()
    {
        float scale = Random.Range(1.5f, 2.5f);
        float x = Random.Range(-100f, 100f);
        float y = Random.Range(95f, 975f);
        transform.localScale = new Vector3(scale, scale, 2f);
        transform.position = new Vector3(transform.position.x + x, y, transform.position.z);
    }

    public void TriggerLighting(float x)
    {
        if (_lightningTimeout > 0)
            return;

        _lightning.SetActive(true);
        _lightning.transform.GetChild(0).GetComponent<SpriteRenderer>().sprite = _sprites[Random.Range(0, _sprites.Count)];
        _lightning.transform.position = new Vector3(x, _lightning.transform.position.y, _lightning.transform.position.z);
        _timeToHideLightning = .2f;
        _lightningTimeout = 2.0f;
    }
}