Raycast to determine certain game objects?

Questions & Answers
1

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.

2

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);
        }
    }
}