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This question was closed Jan 31, 2018 at 04:49 PM by iwanjia.
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Question by iwanjia · Dec 16, 2017 at 06:03 PM · c#raycastlinerenderer

The referenced script on this Behavior ( Game Object 'Camera') is missing. What shall I do?

code needed to draw with line renderer by following mouse I have attached script(called ''script'') and line Renderer to Camera but it doesn't draw and show this mistake "The referenced script on this Behavior ( Game Object 'Camera') is missing" Here is the code:

     using UnityEngine;
     using System.Collections;
     public class Draw :
     MonoBehaviour {
 RaycastHit hit;
 string dtxt;
 bool  mouseIsDown = false;
 LineRenderer lineRender;
 int numberOfPoints = 0;
 void  Start (){
 }

 void  Update (){
     Ray ray = new Ray(transform.position, transform.forward);
     ArrayList thePath = new ArrayList();
     dtxt = "";
     ray = GetComponent<Camera>().ScreenPointToRay (Input.mousePosition);

     if (Physics.Raycast (ray, out hit, 1000)){
         if (mouseIsDown) {
             thePath.Add(hit.point);
             lineRender.SetVertexCount( thePath.Count );
             lineRender.SetPosition(thePath.Count - 1, hit.point+new Vector3(0,1,0));
         }
     }

     if(Input.GetMouseButtonDown(0))
     {
         mouseIsDown = true; 
     }
     if (Input.GetMouseButtonUp(0)){
         mouseIsDown = false;
     }

     //transform.parent.gameObject.transform.eulerAngles.y += 0.2f;

 }

}

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avatar image Nomenokes · Dec 16, 2017 at 07:06 PM 0
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Assu$$anonymous$$g the error is on line 17. If not, where is it? The error message should give a line number.

If so, is there a Camera script on the object you have the script attached to? It's not totally clear from your description.

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Answer by Firestream1014 · Dec 16, 2017 at 07:40 PM

Not 100 percent sure if this works so I'm sorry if it doesn't but could try adding " Public Camera cam" to where you initiated your variables and "ray = cam.ScreenPointToRay(Input.mousePosition) " Hopefully, it works, sorry if I wasted you time :(

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avatar image Nomenokes · Dec 17, 2017 at 01:33 AM 0
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Yeah, that would be way more efficient but it would work only if the code already worked.

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