using UnityEngine;
using System.Collections;

public class TileAnim : MonoBehaviour {
	
	public float width;
	public float height;
	
	public float totalWidth;
	public float totalHeight;
	
	private int count;
	private int cols;
	private int rows;
	
	public int loop = 0;
	private int currentLoopTime = 0;
	public float removeDelay = 0;
	private float overTime = -1f;
	
	// Use this for initialization
	void Start () 
	{
		count = 0;
		cols = (int)(totalWidth/width);
		rows = (int)(totalHeight/height);
	}
	
	// Update is called once per frame
	void Update () 
	{
		if(overTime > 0)
		{
			if(GameTime.time-overTime>removeDelay)
			{
				Destroy(this.gameObject);
			}
			return;
		}

		int col = count%cols;
		int row = count/cols;
		
		float offsetX = col*width/totalWidth;
		float offsetY = row*height/totalHeight;
		
		GetComponent<Renderer>().material.mainTextureOffset = new Vector2(offsetX, offsetY);
		
		count++;
		if(count >= cols*rows)
		{
			count = 0;
			currentLoopTime++;
			if(loop >= 0 && currentLoopTime >= loop)
			{
				if(removeDelay == 0)
				{
					Destroy(this.gameObject);
				}
				else
				{
					this.GetComponent<Renderer>().enabled = false;
					overTime = GameTime.time;
				}
			}
		}
	}
}