How to check if mouse over object without adding so many scripts?

Questions & Answers
1

I need to check if my mouse is over an object. The problem is that there are a ton of those same objects. Like A LOT of those objects. Do I have to add a script to every object that contains void OnMouseDown() or can I do something inside my main player script? I really need help with this and I cannot find an answer online because it hasnt been asked probably. If I do have to add a script to all those objects, will it slow down my game at all? Thanks and all tips are appreciated.

(If you want more information on what I am doing, I am trying to make a cover system in my game. Whenever my mouse is over an object, my player will move to cover in that specific cover area.) Thanks guys!!

2

Use RayCast instead, it will require only one script.

For example:

var ray = Camera.main.ScreenPointToRay (Input.mousePosition);
    var hit : RaycastHit;
    if (Physics.Raycast (ray, hit, 1000)) {
         Debug.Log("You hit: "+hit.collider.gameObject);
    }
3

change if statement: if (Physics.Raycast (ray, out hit, 1000f))