EventSystem.SetSelectedGameObject

Parameters

Description

Set the GameObject as selected. Will send an OnDeselect the the old selected object and OnSelect to the new selected object.

Sets a GameObject as selected in the EventSystem. Make sure you have an EventSystem in your Scene. This sends an OnDeselect to the old selected GameObject and an OnSelect to the new selected GameObject.

//This script shows how you set a non-UI GameObject as the current selected in the EventSystem by clicking on it.
//Make sure to assign a PhysicsRaycaster component to your Main Camera.
//Make sure your Scene has an EventSystem

//Attach this script to a GameObject. Create some other GameObjects to test on.
//In Play Mode, click on GameObjects to see the current selected be output to the console

using UnityEngine;
using UnityEngine.EventSystems;

public class SetSelectedGameObjectExample : MonoBehaviour
{
    EventSystem m_EventSystem;

    void OnEnable()
    {
        //Fetch the current EventSystem. Make sure your Scene has one.
        m_EventSystem = EventSystem.current;
    }

    void Update()
    {
        //Check if there is a mouse click
        if (Input.GetMouseButtonDown(0))
        {
            RaycastHit hit;
            //Send a ray from the camera to the mouseposition
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            //Create a raycast from the Camera and output anything it hits
            if (Physics.Raycast(ray, out hit))
                //Check the hit GameObject has a Collider
                if (hit.collider != null)
                {
                    //Click a GameObject to return that GameObject your mouse pointer hit
                    GameObject m_MyGameObject = hit.collider.gameObject;
                    //Set this GameObject you clicked as the currently selected in the EventSystem
                    m_EventSystem.SetSelectedGameObject(m_MyGameObject);
                    //Output the current selected GameObject's name to the console
                    Debug.Log("Current selected GameObject : " + m_EventSystem.currentSelectedGameObject);
                }
        }
    }
}