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

public class ObjSpawner : MonoBehaviour
{
    [SerializeField]
    private GameObject objPrefab;
    [SerializeField]
    private float spawnRate;
    [SerializeField]
    private int amount;
    [SerializeField]
    private List<GameObject> pool;
    private int index = 0;
    private int firstIndex = 0;
    // Start is called before the first frame update
    void Start()
    {
        for (int i = 0; i < amount; i++)
        {
            GameObject obj = Instantiate(objPrefab, this.transform);
            obj.SetActive(false);
            pool.Add(obj);
        }
        //TODO add trigger start
        InvokeRepeating("Spawn",0, spawnRate);
    }
    private void Spawn(){
        if(index < amount){
            pool[index].transform.position = transform.position;
            pool[index].transform.rotation = transform.rotation;
            Rigidbody rb = pool[index].GetComponent<Rigidbody>();
            if(rb != null){
                rb.velocity = Vector3.zero;
                rb.angularVelocity = Vector3.zero;
            }
            
            pool[index].SetActive(true);
            index++;
        }else{
            pool[firstIndex].SetActive(false);
            index = firstIndex;
            firstIndex = firstIndex+1%pool.Count-1;
            Spawn();
        }
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}