[SOLVED]got drag item working But how do i lock the terrain?

Hi I got drag item working But how do i stop the terrain from being dragged too ?

how do i lock it OR make the drag NOT touch the terrain ?

here is the script I'm using to drag the items THANKS to the author found it on the forum somewhere

pragma strict
// Attach this script to an orthographic camera.
private var object : Transform; // The object we will move.
private var offSet : Vector3; // The object's position relative to the mouse position.

function Update () {
var ray = camera.ScreenPointToRay(Input.mousePosition); // Gets the mouse position in the form of a ray.
if (Input.GetButtonDown("Fire1")) { // If we click the mouse...
if (!object) { // And we are not currently moving an object...
var hit : RaycastHit;
if (Physics.Raycast(ray, hit, Mathf.Infinity)) { // Then see if an object is beneath us using raycasting.
object = hit.transform; // If we hit an object then hold on to the object.
offSet = object.position-ray.origin; // This is so when you click on an object its center does not align with mouse position.
}
}
}
else if (Input.GetButtonUp("Fire1")) {
object = null; // Let go of the object.
}
if (object) {
object.position = Vector3(ray.origin.x+offSet.x, object.position.y, ray.origin.z+offSet.z); // Only move the object on a 2D plane.
}
}

 

You could set the layer of the terrain to Ignore Raycast. Alternatively, you can check the name of the transform that is hit by the raycast - if the name is that of your terrain object, then don't perform the drag.

 

your a legend Andeeee

Thanks