Mouse wheel zoom

Questions & Answers
1

how can i change a variable smoothly with the mouse wheel (maybe using mathf.Lerp or some kind of interpolation)

I need to change the distance var.

Code:

var target : Transform;
var distance = 10.0;

var xSpeed = 250.0;
var ySpeed = 120.0;

var yMinLimit = -20;
var yMaxLimit = 80;

private var x = 0.0;
private var y = 0.0;

@script AddComponentMenu("Camera-Control/Mouse Orbit 2")

function Start () {
    var angles = transform.eulerAngles;
    x = angles.y;
    y = angles.x;

	// Make the rigid body not change rotation
   	if (rigidbody)
		rigidbody.freezeRotation = true;
}

function LateUpdate () {
	if (target && Input.GetKey(KeyCode.Mouse1)) {
		x += Input.GetAxis("Mouse X") * xSpeed * 0.02;
		y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02;
     
		y = ClampAngle(y, yMinLimit, yMaxLimit);
	}
 
	var rotation = Quaternion.Euler(y, x, 0);
	var position = rotation * Vector3(0.0, 0.0, -distance) + target.position;

	transform.rotation = rotation;
	transform.position = position;
}

static function ClampAngle (angle : float, min : float, max : float) {
	if (angle < -360)
		angle += 360;
	if (angle > 360)
		angle -= 360;
	return Mathf.Clamp (angle, min, max);
}
2

It’s hard to find the correct syntax for scrollwheel. It’s not in Input or GetAxis :

Input.GetAxis("Mouse ScrollWheel")

add this to your code :

var distanceMin : float = 3.0;
var distanceMax : float = 10.0;
var zoomSpeed : float = 2.0;

// in function
distance = Mathf.Clamp( distance + Input.GetAxis("Mouse ScrollWheel") * zoomSpeed, distanceMin, distanceMax );