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Question by CB-TV · Sep 06, 2013 at 09:39 PM · guiraycastgame objectsphere raycast

Raycast to determine certain game objects?

I want to use a raycast to determine different game objects. So far I have a script which uses a raycast. When it hits and object and the left mouse button is pressed it changes a boolean to true. In a separate script, it checks if the variable is true and enables some GUI. I want to know how to determine what object the raycast hits and change what GUI appear because of it.

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avatar image DaveA · Sep 06, 2013 at 10:38 PM 0
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Read the manual about raycasthit

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Answer by clunk47 · Sep 06, 2013 at 11:18 PM

I'll answer your original question, about raycasting. The GUI topic should be a separate question. Here's a simple C# example on how to get the name of an object the ray is hitting. This uses a ray from mouse position from the main camera's perspective.

 using UnityEngine;
 using System.Collections;
 
 public class Example : MonoBehaviour
 {
     RaycastHit hit;
     Ray ray;
 
     void Update()
     {
         ray = Camera.main.ScreenPointToRay(Input.mousePosition);
 
         if(Physics.Raycast(ray, out hit))
         {
             Debug.Log(hit.collider.gameObject.name);
         }
     }
 }
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avatar image CB-TV · Sep 07, 2013 at 08:30 AM 1
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Ok, Thank You!

avatar image clunk47 · Sep 07, 2013 at 04:45 PM 1
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If this answer helped resolve your concern, please vote up (thumbs up) and accept (check mark) the answer.

avatar image syamilsynz · Mar 23, 2014 at 02:35 AM 0
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it works well, thanks

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