Question

In a Unity3d application am trying to detect a click in a certain squared area of the current camera. Is there any way to do that?

Thank you

Answer 1

Is this not what you’re looking for?

http://unity3d.com/support/documentation/ScriptReference/Input-mousePosition.html

** EDIT **

using UnityEngine;

public class example : MonoBehaviour
{
    void Update()
    {
        // Left-half of the screen.
        Rect bounds = new Rect(0, 0, Screen.width/2, Screen.height);
        if (Input.GetMouseButtonDown(0) && bounds.Contains(Input.mousePosition))
        {
            Debug.Log("Left!");            
        }
    }
}