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

public class DebrisEffect : MonoBehaviour
{
    [SerializeField]private float MoveSpeed= 1;
    [SerializeField]private float DrowningSpeed= 1;

    [SerializeField]private float AliveTime = 30;
    [SerializeField]private float RotationSpeed = 1;
    float aliveTimer = 0;
    private Dictionary<Transform, Vector3> debris;
    
    void Start(){
        Play();
    }
    void Update()
    {
        if(debris == null){
            return;
        }
        if(aliveTimer < AliveTime){
            aliveTimer+=Time.deltaTime;
            MoveDebris();
        }else{
            //Time to go!
            gameObject.SetActive(false);
            aliveTimer=0;
        }
    }

    void MoveDebris(){
        foreach(KeyValuePair<Transform, Vector3> debri in debris){
            float m_moveSpeed= MoveSpeed;
            if(debri.Value.z > 0){
                m_moveSpeed= MoveSpeed*2;
            }
            debri.Key.position+= debri.Value * m_moveSpeed;
            if(aliveTimer > AliveTime/3f){
                debri.Key.position -= new Vector3(0,0, DrowningSpeed);
            }
            debri.Key.Rotate(new Vector3(0,0,0.1f) *debri.Value.magnitude * RotationSpeed);
        }
    }
    public void Play(Vector3 position){
        transform.position = position;
        Play();
    }
    public void Play(){
            aliveTimer=0;

        debris = new Dictionary<Transform, Vector3>();
        for(int i=0; i < transform.childCount; i++){
            Vector2 movement = new Vector3(Random.Range(-1f,1f), Random.Range(-1f,1f), Random.Range(-1f,0f));
            debris.Add(transform.GetChild(i), movement);
            transform.GetChild(i).position = transform.position;
        }
    }
}