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

public class Spawner : MonoBehaviour {

	public GameObject[] attackerPrefabArray;

	// Update is called once per frame
	void Update () {
		foreach (GameObject thisAttacker in attackerPrefabArray) {
			if (isTimeToSpawn (thisAttacker)) {
				Spawn (thisAttacker);
			}
		}
	}

	void Spawn (GameObject myGameObject){
		GameObject myAttacker = Instantiate (myGameObject) as GameObject;
		myAttacker.transform.parent = transform;
		myAttacker.transform.position = transform.position;
	}

	bool isTimeToSpawn (GameObject attackerGameObject){
		Attacker attacker = attackerGameObject.GetComponent<Attacker> ();

		float meanSpawnDelay = attacker.seenEverySeconds;
		float spawnsPerSecond = 1 / meanSpawnDelay;

		if (Time.deltaTime > meanSpawnDelay) {
			Debug.LogWarning ("Spawn rate capped by frame rate");
		}

		float threshold = spawnsPerSecond * Time.deltaTime / 5;

		if (Random.value < threshold) {
			return true;
		} else {
			return false;
		}
	}
}