slider

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

[RequireComponent (typeof (BoxCollider))]
public class Slider : MonoBehaviour {

    public Transform knob;
    public Text textMesh;
    public string sliderName;

    private Vector3 targetPos;

    private float sliderPercent;
    private float sliderLength;

    // Use this for initialization
    void Start () {
        sliderLength = GetComponent<BoxCollider> ().size.x-0.4f;
        targetPos = knob.position;

    }

    // Update is called once per frame
    void Update () {
        knob.position = Vector3.Lerp (knob.position, targetPos, Time.deltaTime*7);

        sliderPercent = Mathf.Clamp01((knob.localPosition.x + sliderLength / 2) / sliderLength);

        textMesh.text = sliderName + ": " + sliderPercent;
    }

    void OnTouchStay (Vector3 point)
    {
        targetPos = new Vector3 (point.x, targetPos.y, targetPos.z);
    }

    public float GetSliderPercent() {
        return sliderPercent;
    }
}