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

public class AfterImagePool : MonoBehaviour
{
    public static AfterImagePool Instance;

    //public CharacterControl myCharacterControl;
    public GameObject targetObject;     //Set these manually to the character object you're copying
	public Animator targetAnimator;   //Set these manually to the character object you're copying
	public GameObject prefab;           //This is the prefab you made in the scene. It's a parent transform with an animator and AfterImage script on it, with Armature and SkinnedMeshRenderer children
	public int poolSize = 10;
	public List<AfterImage> afterImages;

	public int interval = 10;

	public int time = 0;

    private bool isActive = false;

	// Use this for initialization
	void Start()
	{
		afterImages = new List<AfterImage>(poolSize);
		for (int i = 0; i < poolSize; i++)
		{
			GameObject nextAfterImage = Instantiate(prefab);
            nextAfterImage.transform.SetParent(this.transform);

            nextAfterImage.GetComponent<AfterImage>().targetObject = targetObject;      //Game Object Target
			nextAfterImage.GetComponent<AfterImage>().targetAnimator = targetAnimator;     //Animator Target

            nextAfterImage.SetActive(false);

            afterImages.Add(nextAfterImage.GetComponent<AfterImage>());
        }
        Instance = this;
    }

	// Update is called once per frame
	void Update()
	{
        if (!isActive)
            return;

		time++;
		if (time >= interval)
        {
            time = 0;
            AddAfterImage();
        }
	}

	void AddAfterImage()
	{
		for (int i = 0; i < poolSize; i++)
		{
			if (!afterImages[i].active)
            {
                afterImages[i].Activate();
                break;
            }
		}
	}

    public void Activate(bool isActive)
    {
        this.isActive = isActive;
        time = isActive ? interval : 0;
    }

    public void SetInterval(int interval)
    {
        this.interval = interval;
    }

}