Unity 5 access First Person Controller Mouse Look Sensitivity via script

Questions & Answers
1

I am currently working with the default FPSController in unity, and I have a child of the First Person Character object that contains a script I am using to control mouse sensitivity. When I look in the inspector I can see the Mouse Look in the First Person Controller Script Component with X and Y Sensitivity, but when I try to access them via

m_FirstPersonController = transform.parent.GetComponent<FirstPersonController> ();
XSensitivity = m_FirstPersonController.XSensitivity;

or

m_MouseLook = transform.parent.GetComponents<MouseLook> ();
XSensitivity = m_MouseLook.XSensitivity;

I get a NullReferenceException on the variable declaration line. My guess is this is because MouseLook is another script not actually attached to the object but is attached in a way to the FirstPersonController script, however I do not know how to access a script within a script so that I can get at the sensitivity variables.

If there is a better way to change the mouse sensitivity I would like to know, but so far it seems the best way to do it is through MouseLook.

2

Asked the question on reddit and got a responce, so now I’m posting the solution here for posterity.

I have the Child Object and Player Object. The Child Object contains the script that I want to use to access the Mouse Look script and the Player Object contains the script that actually has access to the Mouse Look script.

In the Player Object script I add two functions.

public float GetMouseSensitivity(bool XorY){
	/*
	 * true = x
	 * false = y
	 */
	if (XorY) {
		return m_MouseLook.XSensitivity;
	} else {
		return m_MouseLook.YSensitivity;
	}
}

and

public void ChangeMouseSensitivity(float X, float Y){
	m_MouseLook.XSensitivity = X;
	m_MouseLook.YSensitivity = Y;
}

To access the mouselook script and get/change the mouse sensitivity.

Then in the child object I get the Player Object script through transform.parent.GetComponent <> (); and use the functions to get and change the mouse sensitivity as needed.

3

this confued me a bit so to clearify, to access the variables in MouseLook you actually need to write the function described above in the FirstPersonController script (not MouseLook script).

so in FirstPersonController.cs:

public void limitCameraVerticleRotation(float max_x, float min_x)
{
			m_MouseLook.MinimumX = min_x;
			m_MouseLook.MaximumX = max_x;
}

and in your new script:

//need this header to get reference to FirstPersonController script!!
using UnityStandardAssets.Characters.FirstPerson;

public class myScript : MonoBehaviour {
         FirstPersonController FPCscript;

     void Start(){
           //this is in case the FPSController is the parent of the object holding this script.
            FPCscript = transform.parent.GetComponent<FirstPersonController>();
       }

       void Update(){
              FPCscript.limitCameraVerticleRotation(maxX, minX);
        }

}
4

Thanks this was very helpful!