Adding A Button for a script

Questions & Answers
1

Okay i have made my script:

var gun : Transform;
var nextPos = 0.0;
var nextField = 40.0;
var nextPos2 = -0.2;
var dampVelocity = 0.4;
var dampVelocity2 = 0.4;
var dampVelocity3 = 0.4;

function Update () {
    var newPos = Mathf.SmoothDamp(gun.transform.localPosition.x, nextPos, dampVelocity, .3);
    var newField = Mathf.SmoothDamp(Camera.main.fieldOfView, nextField, dampVelocity2, .3);
    var newPos2 = Mathf.SmoothDamp(gun.transform.localPosition.y, nextPos2, dampVelocity3, .3);

	gun.transform.localPosition.x = newPos;
    gun.transform.localPosition.y = newPos2;
    Camera.main.fieldOfView = newField;
    
    if (Input.touchCount > 0) {
        nextField = 40.0;
        nextPos = -0.145;
        nextPos2 = -0.096;
    } else {
        nextField = 70.0;
        nextPos = 0.0;
        nextPos2 = -0.2;
    }
}

But i would like to assign it to a button like the movement is in the first person camera demo.

how would i make the button and assign it the code is confusing and does not explain the commands well

2

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