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Question by bluelock3 · Aug 30, 2017 at 06:14 PM · c#2dtouch

Touch position is off screen.

I have this code:

 void Start () {
         Control = GameObject.FindGameObjectWithTag ("TouchControl");
     }
 
     void Update () {
         
         if (Input.touchCount > 0) {
             Control.transform.position = Input.GetTouch (0).position;
             Debug.Log (Input.GetTouch (0).position);
         }
     }

I want the Control Game Object to be moved wherever i touch on the screen, but it keeps going far off... Thanks for the help!

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Answer by Vicarian · Aug 30, 2017 at 06:25 PM

The touch position is likely in screen space. You'll want to convert it to world space using Camera.ScreenToWorldPoint(Vector3), so:

          if (Input.touchCount > 0) {
              Control.transform.position = Camera.main.ScreenToWorldPoint(Input.GetTouch (0).position);
              Debug.Log (Camera.main.ScreenToWorldPoint(Input.GetTouch (0).position));
          }
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avatar image bluelock3 · Aug 30, 2017 at 06:42 PM 0
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I am getting: Assets/scripts/TouchScript.cs(16,45): error CS1061: Type UnityEngine.Camera' does not contain a definition for ScreenToWorldSpace' and no extension method ScreenToWorldSpace' of type UnityEngine.Camera' could be found. Are you missing an assembly reference?

(Do i just need to add a camera at the beginning?)

@Vicarian

avatar image Vicarian bluelock3 · Aug 30, 2017 at 06:45 PM 0
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Apologies, flubbed the method call in the snippet, it's fixed.

avatar image bluelock3 Vicarian · Aug 30, 2017 at 07:02 PM 0
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Works perfectly thank you!!

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