hello all, i am 3d cg artist, i am new to unity, and need help from you.

i am trying to make a simple game "labyrinth" my logic is when player tilt the device , ball rolls appropriate, i have created 3d assets for this in unity, can handle physics a bit, but low on scripting, can anybody helps me out, from start what to do ? thanks.

i am applying this script on ball, but when runs the build on device nothing happens :-(

pragma strict

var tilt : Vector3 = Vector3.zero; var speed : float; private var circ : float; private var previousPosition : Vector3;

@script RequireComponent(Rigidbody) function Start() { //Find the circumference of the circle so that the circle can be rotated the appropriate amount when rolling circ = 2 Mathf.PI collider.bounds.extents.x;
previousPosition = transform.position; }

function Update () { tilt.x = -Input.acceleration.y; tilt.z = Input.acceleration.x;

 rigidbody.AddForce(tilt * speed * Time.deltaTime);

}

function LateUpdate() { var movement : Vector3 = transform.position - previousPosition;

 movement = Vector3(movement.z,0,  -movement.x);
 
 transform.Rotate(movement / circ * 360, Space.World);
 
 previousPosition = transform.position;    
 

}