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

public class SpawnFood : MonoBehaviour {

    public GameObject foodPrefab;
    public List<GameObject> foodList;

    public int MaxFoodSpawn = 10;
    public int CurrentAmountOfFood = 0;

    public float timeLeft = 5f;

    public Vector3 center;
    public Vector3 size;

    private void Start()
    {
        foodList = new List<GameObject>();
    }

    private void Update()
    {
        timeLeft -= Time.deltaTime;
        if ( timeLeft < 0)
        {
            for (int i = 0; i < MaxFoodSpawn; i++)
            {
                if (CurrentAmountOfFood < 10)
                {
                    CheckForList();
                    CreateGizmos();
                    CurrentAmountOfFood++;
                }
            }
            timeLeft = 5f;
        }
    }

    public void CheckForList()
    {
        for (int i = foodList.Count - 1; i > -1; i--)
        {
            if (foodList[i] == null)
            {
                Debug.Log(i);
                foodList.RemoveAt(i);
            }
        }
    }

    public void CreateGizmos()
    {
        Vector3 pos = center + new Vector3
            (Random.Range(-size.x / 2, size.x / 2),
            (Random.Range(-size.y / 2, size.y / 2)),
            (Random.Range(-size.z / 2, size.z / 2)));

        //Spawn food
        foodList.Add((GameObject)Instantiate(foodPrefab, pos, Quaternion.identity));
    }

    private void OnDrawGizmosSelected()
    {
        Gizmos.color = new Color(1, 0, 0, 0.5f);
        Gizmos.DrawCube(center, size);
    }
}