using UnityEngine;
using System.Collections;

public class CameraFollow2D : MonoBehaviour {

    public float damping = 1.5f;
    public Vector2 offset = new Vector2(2f, 1f);
    public bool faceLeft;
    private Transform player;
    private int lastX;

    void Start ()
    {
  offset = new Vector2(Mathf.Abs(offset.x), offset.y);
  FindPlayer(faceLeft);
    }

    public void FindPlayer(bool playerFaceLeft)
    {
  player = GameObject.FindGameObjectWithTag("Player").transform;
  lastX = Mathf.RoundToInt(player.position.x);
  if(playerFaceLeft)
  {
   transform.position = new Vector3(player.position.x - offset.x, player.position.y + offset.y, transform.position.z);
  }
  else
  {
   transform.position = new Vector3(player.position.x + offset.x, player.position.y + offset.y, transform.position.z);
  }
    }

    void Update ()
    {
  if(player)
  {
   int currentX = Mathf.RoundToInt(player.position.x);
   if(currentX > lastX) faceLeft = false; else if(currentX < lastX) faceLeft = true;
   lastX = Mathf.RoundToInt(player.position.x);

   Vector3 target;
   if(faceLeft)
   {
    target = new Vector3(player.position.x - offset.x, player.position.y + offset.y, transform.position.z);
   }
   else
   {
    target = new Vector3(player.position.x + offset.x, player.position.y + offset.y, transform.position.z);
   }
   Vector3 currentPosition = Vector3.Lerp(transform.position, target, damping * Time.deltaTime);
   transform.position = currentPosition;
  }
    }
}