using UnityEngine;
using System.Collections;

public class ballMovement : MonoBehaviour {

    private Rigidbody ball_rb;

    public float _sensitivity;
    private Vector3 _mouseReference;
    private Vector3 _mouseOffset;
    private Vector3 _rotation;
    private bool _isRotating;

    // Use this for initialization
    void Start () {
        ball_rb = GetComponent<Rigidbody>();
        _sensitivity = 0.4f;
        _rotation = Vector3.zero;
    }

    // Update is called once per frame
    void Update () {
        CameraMovement();
    }

    void CameraMovement()
    {
        if (_isRotating)
        {
            // offset
            _mouseOffset = (Input.mousePosition - _mouseReference);

            // apply rotation
            _rotation.y = -(_mouseOffset.x + _mouseOffset.y) * _sensitivity;

            // rotate
            transform.Rotate(_rotation);

            // store mouse
            _mouseReference = Input.mousePosition;
        }

        if (Input.GetMouseButtonDown(1))
        {
            // rotating flag
            _isRotating = true;

            // store mouse
            _mouseReference = Input.mousePosition;
        }
        else if(Input.GetMouseButtonUp(1))
        {
            // rotating flag
            _isRotating = false;
        }
    }
}