Connect two gameObjects to interact with them simultaneously?

Unity Engine
1

Hi there,

I have two separate gameObjects and I want to interact with both of them at the same time when the mouse is hovering over just one of the objects. Is there a way to connect the objects or their colliders?

thanks in advance :slight_smile:

2

two possibilities come to mind… make 1 the child of the other. or add have one simply control the other.

3

That doesn’t work sadly.

what exactly do you mean by that? can you give an example? :slight_smile:

4

You should give an example of what happens when you “control” the first object… some code where the object is hovering over one of the objects. then I could give you a practical example of how to do the same with the other object.

5

So this is the code for the highlight effect I want when hovering over the object and not pressing the left mouse button. Now I have two separate objects on which I want this effect at the same time when I only hover over either of them.

public class ChangeEmission : MonoBehaviour
{
   
    private Material _material;
    private Color _targetColor = new Color(0.2f, 0.25f, 0.5f, 0.5f);
    public bool displayInfo;
    bool mousePressed;
    bool mouseOver;


    void Start()
    {
        _material = GetComponent<Renderer>().material;
    }


    void Update()
    {
        click ();
        EmissionChange ();

        if (mouseOver && !mousePressed)
        {
            displayInfo = true;
        }

        else
        {
            displayInfo = false;
        }
    }


    void click()
    {
        if (Input.GetMouseButtonDown(0)){
            mousePressed = true;

        } else if (Input.GetMouseButtonUp(0)){
            mousePressed = false;
        }
    }


    void OnMouseOver ()
    {
        mouseOver = true;
    }


    void OnMouseExit ()
    {
        mouseOver = false;
    }
       

    void EmissionChange ()
    {
        if (displayInfo)
        {
            _material.SetColor("_EmissionColor", _targetColor);
        }

        else
        {
            _material.SetColor("_EmissionColor", Color.black);
        }
    }
}
6

try something like this:

public class ChangeEmission : MonoBehaviour
{
   [HideInInspector]
    public Material _material;
    private Color _targetColor = new Color(0.2f, 0.25f, 0.5f, 0.5f);
    public bool displayInfo;
    bool mousePressed;
    bool mouseOver;
	
	public ChangeEmission linkedObject;
 
 
    void Start()
    {
        _material = GetComponent<Renderer>().material;
    }
 
 
    void Update()
    {
        click ();
        EmissionChange ();
 
        if (mouseOver && !mousePressed)
        {
            displayInfo = true;
        }
 
        else
        {
            displayInfo = false;
        }
    }
 
 
    void click()
    {
        if (Input.GetMouseButtonDown(0)){
            mousePressed= true;
 
        } else if (Input.GetMouseButtonUp(0)){
            mousePressed = false;
        }
    }
 
 
    void OnMouseOver ()
    {
        mouseOver= true;
    }
 
 
    void OnMouseExit ()
    {
        mouseOver = false;
    }
       
 
    void EmissionChange ()
    {
        if (displayInfo)
        {
            _material.SetColor("_EmissionColor", _targetColor);
			if(linkedObject != null && linkedObject._material != null){
				linkedObject._material.SetColor("_EmissionColor", _targetColor);
			}
        }
        else
        {
            _material.SetColor("_EmissionColor", Color.black);
			if(linkedObject != null && linkedObject._material != null){
				linkedObject._material.SetColor("_EmissionColor", Color.black);
			}
        }
    }
}