Basic UNITY C# code for point on touch screen to point not working

Asked Sep 19 '17 at 13:53

Active Sep 19 '17 at 13:56

Viewed 57 times

The code is basic and I want to convert my tap on screen to ray to the point Error=NullReferenceException: Object reference not set to an instance of an object. Thanks in advance

void Update () 
{
    if (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began) 
    {
        rX = Camera.main.ScreenPointToRay(Input.GetTouch (0).position);
        Physics.Raycast(rX,out hitX,Mathf.Infinity);
        Debug.DrawRay(rX.origin, rX.direction * 200, Color.cyan);
    }
}

edited Sep 19 '17 at 13:56

ryeMoss

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asked Sep 19 '17 at 13:53

Aniket Malik

add a better debug trace, check what is Input.GetTouch(0) I guess it is the null guy. – Felice Pollano Sep 19 '17 at 13:55
Input.GetTouch(0) refers to the first tap on screen – Aniket Malik Sep 19 '17 at 13:58
@AnitekMalik Camera.main? I can't see other thing possibly null in the code. – Felice Pollano Sep 19 '17 at 13:59
the null exception is for rX = Camera.main.ScreenPointToRay(Input.GetTouch (0).position); – Aniket Malik Sep 19 '17 at 14:00
I reallydont know why – Aniket Malik Sep 19 '17 at 14:00
You want to detect which object is clicked? – Programmer Sep 19 '17 at 14:01
Ya but first I want to know what is wrong in the code – Aniket Malik Sep 19 '17 at 14:03
1

Did you retag your camera? Make sure it is tagged as MainCamera. – ryeMoss Sep 19 '17 at 14:07
@ryeMoss Done Yes! It was not tagged as Maincamera.Love you man! – Aniket Malik Sep 19 '17 at 14:10
FYI, there's a [dedicated Stack Exchange for game development](http://gamedev.stackexchange.com). – ashes999 Sep 19 '17 at 17:11

Basic UNITY C# code for point on touch screen to point not working

0 Answers0