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

public class destroy_level_explosion : MonoBehaviour
{
    public BoxCollider box1;
    public BoxCollider box2;
    public BoxCollider box3;
    public BoxCollider box4;
    public BoxCollider box5;
    public BoxCollider box6;
    public BoxCollider box7;
    public Rigidbody rb1;
    public Rigidbody rb2;
    public Rigidbody rb3;
    public Rigidbody rb4;
    public Rigidbody rb5;
    public Rigidbody rb6;
    public Rigidbody rb7;

    public ParticleSystem explosion;
    public Transform[] explosion_pos;
    //particle systems array
    BoxCollider[] box_array;
    Rigidbody[] rb_array;
    //audio clip for explosion

    public GameObject explosion_sound;

    IEnumerator Detonatetrain(){
        //play explosion sound
        for (int i = 0; i < explosion_pos.Length; i++)
        {
            //instantiate explosion at each position
            GameObject asx = Instantiate(explosion_sound, explosion_pos[i].position, explosion_pos[i].rotation);
            //play explosion sound
            asx.GetComponent<AudioSource>().Play();
            ParticleSystem explosion_clone = Instantiate(explosion, explosion_pos[i].position, explosion_pos[i].rotation) as ParticleSystem;
            explosion_clone.Play();
            //wait 2 seconds
            yield return new WaitForSeconds(2);
            //destroy explosion
            Destroy(explosion_clone.gameObject);
            box_array[i].enabled = false;
            rb_array[i].isKinematic = false;
            rb_array[i].useGravity = true;
            //remove constraints
            rb_array[i].constraints = RigidbodyConstraints.None;
            //add random force to each box
            rb_array[i].AddForce(new Vector3(Random.Range(-100, 100), Random.Range(-100, 100), -400), ForceMode.Impulse);
        }
        yield return new WaitForSeconds(4);
        SceneManager.LoadScene("Finish");
    }

    // Start is called before the first frame update
    void Start()
    {
        rb_array = new Rigidbody[] { rb1, rb2, rb3, rb4, rb5, rb6, rb7 };
        box_array = new BoxCollider[]{box1, box2, box3, box4, box5, box6, box7};
    }

    // Update is called once per frame
    void Update()
    {
        
    }
    void OnCollisionEnter(Collision other) {
        MeshRenderer mesh = this.GetComponent<MeshRenderer>();
        BoxCollider box = this.GetComponent<BoxCollider>();
        Rigidbody rb = this.GetComponent<Rigidbody>();
        TrailRenderer trail = this.GetComponent<TrailRenderer>();
        trail.enabled = false;
        mesh.enabled = false;
        box.enabled = false;
        rb.isKinematic = true;
        StartCoroutine(Detonatetrain());
    }
}