gistfile1.txt

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.XR.iOS;

public class TouchEvents : MonoBehaviour {

  public delegate void TouchDown(Ray ray,Vector3 screenPos);
  public static event TouchDown OnTouchDown;

  public delegate void TouchUpdate(Ray ray,Vector3 screenPos , Vector3 deltaPos , Vector3 touchStartPos );
  public static event TouchUpdate OnTouchUpdate;

  public delegate void TouchUp(Ray ray,Vector3 screenPos, Vector3 deltaPos , Vector3 touchStartPos);
  public static event TouchUp OnTouchUp;

  public delegate void ObjectDown(Ray ray,GameObject t, Vector3 screenPos, Vector3 eyeVec);
  public static event ObjectDown OnObjectDown;

  public delegate void ObjectUpdate(Ray ray,GameObject t, Vector3 screenPos, Vector3 eyeVec, Vector3 deltaPos , Vector3 touchStartPos);
  public static event ObjectUpdate OnObjectUpdate;

  public delegate void ObjectUp(Ray ray,GameObject t, Vector3 screenPos, Vector3 eyeVec, Vector3 deltaPos , Vector3 touchStartPos);
  public static event ObjectUp OnObjectUp;


  private Vector3 oPos;
  private Vector3 touchStartPos;
  private Vector3 dPos;

  private bool touching = false;
  private bool dragging = false;
  private GameObject collidedObject;
  private Vector3 eyeVec;

  private Ray ray;

   void OnDown( Vector3 screenPosition ){ 

    touchStartPos = screenPosition;
    oPos = screenPosition;


    //Debug.Log( "DOWN");
    //GameObject ball = newBall;
    touching = true;

    
    // Seeing if we should make something new or drag something old;
    ray = Camera.main.ScreenPointToRay(screenPosition);
    RaycastHit info;

    if( Physics.Raycast(ray, out info, 100) ){

      collidedObject = info.collider.gameObject;
      eyeVec = Camera.main.transform.position - collidedObject.transform.position;

    
      dragging = true;

    }

    if( dragging == false ){
      if(OnTouchDown != null) OnTouchDown(ray, screenPosition);
    }else{
      if(OnObjectDown != null) OnObjectDown( ray, collidedObject , screenPosition , eyeVec );
    }


  }

  void OnUp( Vector3 screenPosition ){
    //Debug.Log("UP");

    dPos = screenPosition - oPos;

   

    if( dragging == false ){
      if(OnTouchUp != null) OnTouchUp(ray,screenPosition,dPos,touchStartPos);
    }else{
      if(OnObjectUp != null) OnObjectUp(ray,collidedObject,screenPosition,eyeVec,dPos,touchStartPos);
    }

    dragging = false;
    touching = false;
    collidedObject = null;

    oPos = screenPosition;

  }

  void OnDrag( Vector3 screenPosition ){
    //Debug.Log( "DRAG");
    dPos = screenPosition - oPos;

    Ray ray = Camera.main.ScreenPointToRay(screenPosition);

    if( dragging == false ){
      if(OnTouchUpdate != null) OnTouchUpdate(ray ,screenPosition,dPos,touchStartPos);
    }else{
      if(OnObjectUpdate != null) OnObjectUpdate(ray,collidedObject,screenPosition,eyeVec,dPos,touchStartPos);
    }

    
    oPos = screenPosition;

  }

  public static Vector3 GetWorldPos( Vector3 screenPosition , float val ){
    
    Ray ray = Camera.main.ScreenPointToRay(screenPosition);

    Vector3 p = ray.origin + ray.direction * val;

    return p;

  }

  

      // Update is called once per frame
  void Update () {

    #if UNITY_EDITOR

    if( Input.GetMouseButtonDown(0) == true ){
      OnDown( Input.mousePosition);
    }

    if( Input.GetMouseButtonUp(0) == true ){
      OnUp( Input.mousePosition);
    }

    if( Input.GetMouseButton(0) == true ){
      OnDrag( Input.mousePosition);
    }

    #else

    if (Input.touchCount > 0 ){

      var touch = Input.GetTouch(0);

      if (touch.phase == TouchPhase.Began){
        OnDown( touch.position );
      }else if (touch.phase == TouchPhase.Moved){
        OnDrag( touch.position );
      }else if (touch.phase == TouchPhase.Ended){
        OnUp( touch.position );
      }

    }

    #endif

      
    

  }

}