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Question by ScottUnityNoob · Feb 08, 2017 at 05:47 PM · raycasttagreferencehitpublic

how do I call a function from another script, when Raycast Hits?

Hello, just wondering if somebody can point me in the right direction.

I have this C# Script:

public class Raycasty : MonoBehaviour {

 public float InteractDistance = 30;

 //public DisappearScript disappearScript;



 public void Update ()
 {

     Ray ray = new Ray (Camera.main.transform.position, Camera.main.transform.forward);
     RaycastHit hit;

     if (Physics.Raycast(ray, out hit, InteractDistance)) 
     {
         Debug.DrawLine(Camera.main.transform.position, transform.position + transform.forward * InteractDistance, Color.green);

         if (Input.GetButtonDown ("click")) 
         {
             if (hit.collider.tag == "Cube")         
             {
                 Destroy (hit.collider.gameObject);

                 //disappearScript.GetComponent<DisappearScript>().Disappear();
             }
         }

     }    
 }

}

This script works as expected. But, instead of : Destroy (hit.collider.gameObject); I want to call a "Disappear" function from another script. (commented out lines)

What am I doing wrong?

Any help is really appreciated, Thanks in advance!

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Answer by Paricus · Feb 08, 2017 at 06:34 PM

https://docs.unity3d.com/ScriptReference/GameObject.SendMessage.html

use hit.SendMessage("NameOfFunction");

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avatar image ScottUnityNoob · Feb 08, 2017 at 07:46 PM 0
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Hello, thank you! I'm not familiar with this method. unfortunately I keep getting errors.

if (hit.collider.tag == "Cube")
{ hit.Send$$anonymous$$essage("Disappear"); }

Error says "UnityEngine.RaycastHit does not contain a definition for "Send$$anonymous$$essage" ?

avatar image Paricus ScottUnityNoob · Feb 08, 2017 at 08:11 PM 0
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That error is thrown if the referenced object doesn't contain the method you're calling use hit.Send$$anonymous$$essage("NameOfFunction", Send$$anonymous$$essageOptions.RequireReceiver) to fix it.

Probably should have mentioned that in the beginning, it kind of goes hand in hand with this function.

avatar image ScottUnityNoob Paricus · Feb 09, 2017 at 01:28 AM 0
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No worries! I got it working, thanks again for your help.

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