does every gameobject create a different "instance" of the script component it is using?

Hello,

I have a basic question regarding components. Let's say I create a script that I want to put to different elements in the scene. This script uses RaycastHits to detect when the mouse is over a sprite. When the mouse is over, then the element moves along the Z axis. When the mouses leaves the element, it returns to it´s original position.

I am having an issue because when I have more than one element in the scene whenever i hover the mouse it does move in the Z axis, but it stops the movement of the other elements that use the same script in the scene.

So I guess, the question is,

does every gameobject create a different "instance" of the component it is using? I would guess it´s a yes, but It surely seems weird that hovering over one element causes the other to stop their movement. Could this be becaus eof the raycasthit?

 

Yes, each script is it's own instance. The first thing that comes to mind is maybe you're using a "static" variable somewhere to control the speed?

 

Post your code.

 

As long as we're not talking about static 'variables', yes.

 

Hi again

Here's the code: It's only the update function (you'lll see two raycasthits cause it's a side by side stereo config), but I don't know why when the mouse is over one sprite with this script as component the other sprites stop moving until the mouse is in a place where it hits none.

Code (CSharp):

1. private RaycastHit hit;
2. public float popOutSpeed = 2f;
3.  
4. void Update () {
5. if (Physics.Raycast(refLeftCam.ScreenPointToRay(Input.mousePosition), out hit) || Physics.Raycast(refRightCam.ScreenPointToRay(Input.mousePosition), out hit))
6. {
7. if (hit.transform.position.z <= (float)StereoParams.depthLayers.onScreen + 0.1 && hit.transform.position.z > (float)StereoParams.depthLayers.middleUserSpace)
8. {
9. hit.transform.position = Vector3.Lerp(hit.transform.position, new Vector3(hit.transform.position.x, hit.transform.position.y, hit.transform.position.z - 1), popOutSpeed*Time.deltaTime);            
10. }
11. }
12. else // mouse isnt over
13. {
14. if (transform.position.z <= (float)StereoParams.depthLayerArray[2])
15. this.transform.position = Vector3.Lerp(transform.position, new Vector3(this.transform.position.x, this.transform.position.y, this.transform.position.z + 1), popOutSpeed*Time.deltaTime);
16. }
17. }

 

Do you have this attached to many sprites?

 

UPDATE: ok, so now i find out about OnMouseOver and OnMouseExit... I'll test it and see how does it work.

I have this attached to 5 sprites! why?!

I'm guessing the mouse hover implementation is not a good one? XD

 

Because it explains everything.

(Physics.Raycast(refLeftCam.ScreenPointToRay(Input.mousePosition), out hit) || Physics.Raycast(refRightCam.ScreenPointToRay(Input.mousePosition), out hit))

This condition is true always if one of these rays hit an object. And if condition is true, then else block isn't working. This is the same for all objects "wearing" this script. This makes only the object "hit" moving as long as condition is true.

 

I suggest that you replace
else
with
if (hit.gameObject != this.gameObject)


P.S. But I don't like ScreenPointToRay to be executed with many objects as you probably noticed

 

I made some changes, to make things easier. But I have a related problem. I'm using OnMouseOver and OnMouseLeave to activate a PopOut and a PushIn function that only change the gameObject's z position.

The thing is, If I want this for selection purposes, it still acts as if all instances had the same script. There's nothing static, but I it might have to do with mouseOver somehow using a ray that touches several other colliders?

There's no hit anymore, so its unlikely? I've just being trying several ways to do this -very simple selection stuff- and can't seem to get around it.

Code (CSharp):

1. public bool selectionModeOn = false;
2.     private bool isSelected = false;
3.  
4.     private RaycastHit hit;
5.     public float popOutSpeed = 10f;
6.     public float popAmount = 3f;
7.  
8.     // Update is called once per frame
9.     void Update () {
10.         if(Input.GetMouseButtonDown(0))
11.         {
12.             if (selectionModeOn)
13.                 this.isSelected = !this.isSelected;
14.         }
15.     }
16.  
17.  
18.     void OnMouseOver()
19.     {
20.         PopOut(transform);
21.     }
22.  
23.     void OnMouseExit()
24.     {
25.         if (!selectionModeOn || selectionModeOn && !isSelected)
26.             PushIn(transform);
27.     }
28.  
29.     private void PopOut(Transform elemToPop, bool digital = true)
30.     {
31.             elemToPop.position = Vector3.Lerp(elemToPop.position, new Vector3(elemToPop.position.x, elemToPop.position.y,  -popAmount), popOutSpeed * Time.deltaTime);
32.     }
33.  
34.     private void PushIn(Transform elemToPush, bool digital = true)
35.     {
36.             elemToPush.position = Vector3.Lerp(elemToPush.position, new Vector3(elemToPush.position.x, elemToPush.position.y, popAmount), popOutSpeed * Time.deltaTime);
37.     }

Why do all tiles behave as a batch if every gameObject has its own script with MouseOver, MouseDOwn and MouseExit functions??

 

Check this out. It's en example of mouse events usage.