Question by unity_xUjX4IqnnaE_nA · Mar 14, 2018 at 10:35 PM · c#unity 5 unity 2d visual studio

Spawn and drag on spawn multiple objects with android multiouch

This one has been bugging me for days so I decided I might as well ask you guys for some advice. So I've been trying to make a scene where I could spawn multiple object by touch and as soon as one spawns, drag it with the finger it was spawned with. I almost got it to work, when I spawn objects (1,2,3...), I can move them around just like described and when i remove fingers in reversed orded (...3,2,1), but the problem starts when i got 3 fingers on the screen and remove my finger off the screen with some different order (1,3,2...forinstance). If I remove 1st finger first, my 2nd object becomes 1st and 3rd objects buggs out and stays on the scene forever. I am beginner in unity and in c# so I hope you can be gentle with me. I got 3 scripts placed in 3 objects, scripts (code) are practically identical so I will paste only one of them.

 using UnityEngine;
 using System.Collections;
 public class NewBehaviourScript : MonoBehaviour
 {
 
     public GameObject itemToSpawn;
     private GameObject itemToSpawnInstance;
 
 
     Ray GenerateTouchRay()
     {
         
         var touchPos = Input.GetTouch(0).position;
         Vector3 touchPosFar = new Vector3(touchPos.x, touchPos.y, Camera.main.nearClipPlane);
         Vector3 touchPosNear = new Vector3(touchPos.x, touchPos.y, Camera.main.nearClipPlane);
         Ray mr = new Ray(touchPosNear, touchPosFar - touchPosNear);
         return mr;
     }
 
         void Update()
     {
 
         if (Input.touchCount > 0)
         {
             Touch touch = Input.touches[0];
 
                 switch (touch.phase)
                 {
                     case TouchPhase.Began:
                      
                         var touchPos = Input.GetTouch(0).position;
                         var createPos = Camera.main.ScreenToWorldPoint(new Vector3(touchPos.x, touchPos.y, 1));
                         itemToSpawnInstance = (GameObject)Instantiate(itemToSpawn, createPos, Quaternion.identity);
                      break;
                     case TouchPhase.Moved:
                         Vector3 newPos = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
                         itemToSpawnInstance.transform.position = new Vector3(newPos.x, newPos.y, itemToSpawnInstance.transform.position.z);
                      break;
                     case TouchPhase.Ended:
                    Destroy(itemToSpawnInstance);
                      break;
                     default:
                         break;
                 }
             }
         
     }
 }

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