Find gameobjects with tag in a specific zone

Is there any way to use GameObject.FindObjectsWithTag() in a specific world zone without looping trough all and verify each of them.

I want to do this without if statement inside foreach/for.

 

Can you explain what you mean by "zone"?

 

Sorry for late reply. By zone I mean a cube defined by Vector3 corner1 and Vector3 corner2. What inside that cube is in "zone"

 

The 2 black points are the 2 Vector3

 

Off the top of my head.... Have a trigger collider encompass the entirety of this "zone". When entering the trigger, any GameObject with the tag you're interested in is added to a list. On exit from the trigger they are removed from the list. Then you don't even need to do FindObjectsWithTag at all, since you have a list available all the time.

Instead of using trigger colliders, you could just every few seconds have each object figure out which zone they are in, and add/remove themselves from appropriate zone lists. You'd use the lists the same, but maintain them differently.

 

Thanks, but some of the objects are in the zone even in the scene view, is OnTriggerEnter called if an object is in trigger before Start()?

 

If OnTriggerEnter doesn't work, you can always poll which objects are in the box using OverlapBox.
https://docs.unity3d.com/ScriptReference/Physics.OverlapBox.html

 

Nice thank, you