How to make a Camera a Main camera

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 Vector3.Magnitude(Camera.main.WorldToScreenPoint(f1.transform.position) - Input.mousePosition);

Im using the above code to get some distance with an GameObject called f1.First im using first person controller. Then my application works fine. But when i delete the first person controller and try to add just a camera below exception comes.

 NullReferenceException UnityEngine.Camera.WorldToScreenPoint (Vector3 position)

What should i do?

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Answer by CHPedersen · Oct 06, 2011 at 10:45 AM

You just need to tag it "MainCamera", that's all. Click on the Camera in your Hierarchy so its properties are brought up in the inspector, then change the Tag property right underneath the name field, so it says "MainCamera". Then it will respond to Camera.main in your code.

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huylv177 · Sep 16, 2016 at 08:01 AM 0

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What happen if there are more than 1 camera was tagged "$$anonymous$$ainCamera". Which camera will be effected when call Camera.main... ?

How to make a Camera a Main camera

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