using UnityEngine;
using System.Collections;

public class SpawnGoblins : MonoBehaviour
{
	//variables
	public GameObject goblin;
	public Transform[] spawnPoints;
	private GameObject[] goblinSize;
	public float maxGoblins = 0.0F;
	public float spawnRate = 0.0F;
	float timer = 0.0F;
	private int  difficulty;
	// Use this for initialization
	void Start () 
	{
		 difficulty = PlayerPrefs.GetInt("difficulty");
		
		
		//switch the difficulty and based on the difficulty change the kill goals
		switch(difficulty)
			{
			case 0:
				//leave the settings as they are since they are so easy
				break;
			case 1:
				//change the attacking chances to 50/50
				maxGoblins = 25;
				break;
			case 2:
				//change the attacking change to 25 meaning 75% of the time they hit
				maxGoblins = 50;
				break;
			}
	}
	
	// Update is called once per frame
	void Update ()
	{
		
		//find out how many goblins there are in the world
		goblinSize = GameObject.FindGameObjectsWithTag("Goblin");
		timer += Time.deltaTime * 1;
		
		if(timer > spawnRate)
		{
			for(int i = 0; i < spawnPoints.Length; i++)
			{
				
				if(goblinSize.Length <  maxGoblins)
				Instantiate(goblin, spawnPoints[i].transform.position , spawnPoints[i].transform.rotation);
			}
			
			timer = 0.0F;
		}
	}
}