using UnityEngine using System Collections public class Drag MonoBehav

using UnityEngine;
using System.Collections;

public class Drag : MonoBehaviour
{
    private int swipeId;
    private Vector2 EndPosition;
    private Vector2 ForcePoint;
    Collider2D aHit;
    public int i = 0;
    
    // Use this for initialization
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButton(0))
        {
            foreach (Touch Check in Input.touches)
            {
                if (Check.phase == TouchPhase.Began)
                {
                    aHit = Physics2D.OverlapPoint(Camera.main.ScreenToWorldPoint(Input.mousePosition));

                }
            }
                if (aHit)
                {
                    aHit.rigidbody2D.velocity = new Vector2(0, 0);
                    if (aHit.gameObject.tag == "DestroybleBlock")
                    {
                        Destroy(aHit.gameObject);
                    }
                    if (aHit.tag == "SlideBlock")
                    {
                        MoveTo(aHit);
                    }
                    if (aHit.tag == "ToLeft")
                    {
                        if (Camera.main.ScreenToWorldPoint(Input.mousePosition).x < aHit.transform.position.x)
                        {
                            MoveTo(aHit);
                        }
                    }
                    if (aHit.tag == "ToRight")
                    {
                        if (Camera.main.ScreenToWorldPoint(Input.mousePosition).x > aHit.transform.position.x)
                        {
                            MoveTo(aHit);
                        }
                    }
                    if (aHit.tag == "Door")
                    {
                        //Debug.DrawLine(Camera.main.ScreenToWorldPoint(Input.mousePosition), new Vector2(Camera.main.ScreenToWorldPoint(Input.mousePosition).x + 10, Camera.main.ScreenToWorldPoint(Input.mousePosition).y));
                       // aHit.collider.rigidbody2D.AddForceAtPosition(Camera.main.ScreenToWorldPoint(Input.mousePosition), new Vector2(-10, 0),ForceMode2D.Force);
                        foreach (Touch touch in Input.touches)
                        {
                            if (touch.phase == TouchPhase.Began)
                            {
                                
                                swipeId = touch.fingerId;
                                ForcePoint = Camera.main.ScreenToWorldPoint(Input.mousePosition);
                            }
                            else
                            {
                                if (swipeId == touch.fingerId)
                                {
                                    if (touch.phase == TouchPhase.Moved || touch.phase == TouchPhase.Stationary)
                                    {
                                      
                                            EndPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
                                            aHit.rigidbody2D.AddForceAtPosition(ForcePoint, new Vector2(EndPosition.x - ForcePoint.x, EndPosition.y - ForcePoint.y)*100, ForceMode2D.Force);
                                            ForcePoint = EndPosition;
                                            i = 0;
                                    
                                    }
                                }
                            }
                        }    
                    }
            }
        }
    }
    void MoveTo(Collider2D aHit)
    {
        foreach (Touch touch in Input.touches)
        {
            if (touch.phase == TouchPhase.Began)
            {
                swipeId = touch.fingerId;
            }
            else
            {
                if (swipeId == touch.fingerId)
                {
                    if (touch.phase == TouchPhase.Moved || touch.phase == TouchPhase.Stationary)
                    {
                        aHit.rigidbody2D.velocity = new Vector2(Camera.main.ScreenToWorldPoint(touch.position).x - aHit.transform.position.x, 0) * 10;
                    }
                    if (touch.phase == TouchPhase.Canceled)
                    {
                        aHit.rigidbody2D.velocity /= 10;
                    }
                }
            }
        }   
    }
}