Can't get touch position in variable?

Question

I am new in unity trying to get touch position but having error this line:

Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);

here is my code:

 using UnityEngine;
 using System.Collections;

 public class enemy : MonoBehaviour {
 // Update is called once per frame
 void Update () {
     Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
     Vector2 touchPos = new Vector2(wp.x, wp.y);
     transform.position = touchPos;
     }
 }

Error: Index out of bounds.

Answer 1

Best Answer

Answer by HarshadK · Aug 07, 2014 at 08:07 AM

Firstly check if there are any touches before you access the Touches array.

So the code becomes:

 public class enemy : MonoBehaviour {
 // Update is called once per frame
 void Update () {
     if(Input.touchCount > 0) {
         Vector3 wp = Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
         Vector2 touchPos = new Vector2(wp.x, wp.y);
         transform.position = touchPos;
     }
     }
 }

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nketc · Aug 07, 2014 at 08:18 AM 0

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error finished but enemy is not moving with touch?

HarshadK · Aug 07, 2014 at 08:38 AM 0

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Set position like this:

 transform.position = new Vector3(touchPos.x, touchPos.y);

HarshadK · Aug 07, 2014 at 09:26 AM 0

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Touch events wont work in editor. You have to test them on device itself.

nketc · Aug 07, 2014 at 09:30 AM 0

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yeah i didnt know that... Thanks a lot... i already have done this... tested on device

Can't get touch position in variable?

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