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Question by eggorko · Jun 20, 2017 at 08:25 AM · gameobjectraycastvariableraycasthitvalue

Store previous gameObject that raycast had hit. (Or store any previous value in Update for that matter)

I need a way to store previous gameobject raycast had hit. I do raycast constantly in Update.I want that when i move mouse to new game Object and Current_GameObject_Under_Pointer becomes that new gameObject and Previous_Gameobject becomes gameObject pointer just left, so when i move mouse from object to object i constantly have current and previous objects values.

It’s very easy to do if you do it on mouse click or some other event like that but i can’t figure out how to do it in Update. I tried different ways with states check and with Current_GameObject_Under_Pointer != Previous_Gameobject e.t c

Thank you.

  GameObject Current_GameObject_UnderPointer;
  GameObject Previous_Gameobject;    
 void Update () {
             
             Ray Ray= Camera.main.ScreenPointToRay(Input.mousePosition);
             RaycastHit hitInfo;
             
             if (Physics.Raycast(Ray, out hitInfo, 100, GridLayerMask))
             {
                Mouse_Position = hitInfo.point;
               Mouse_Position_Rounded = new 
                Vector3((Mathf.Round(GW_Mouse_Position.x)), 0, 
                (Mathf.Round(GW_Mouse_Position.z)));
               Current_GameObject_Under_Pointer = 
                hitInfo.transform.gameObject;
             }
     }
 


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Answer by FlaSh-G · Jun 20, 2017 at 08:35 AM

 var nextGameObject = hitInfo.gameObject;
 if(nextGameObject != currentGameObject)
 {
   previousGameObject = currentGameObject;
   currentGameObject = nextGameObject;
 }

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avatar image eggorko · Jun 20, 2017 at 08:43 AM 0
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Well, that's was quick. Thank you. I was statring to get that i need 3rd varible to do that but was't smart enought to figure how to use it.

avatar image FlaSh-G eggorko · Jun 20, 2017 at 08:55 AM 0
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Well, technically, you don't need it. It's just there for readabilty. You could replace all occurrences of nextGameObject with hitInfo.gameObject.

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