Smooth movement

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

// @kurtdekker

public class SmoothMovement : MonoBehaviour
{
    float currentQuantity;
    float desiredQuantity;

    const float MovementPerSecond = 2.0f;

    void Start ()
    {
        // TODO: set up your initial values, if any
        currentQuantity = 1;

        // match desired
        desiredQuantity = currentQuantity;
    }

    void AcceptUserInput()
    {
        if (Input.GetKeyDown( KeyCode.Alpha1))
        {
            desiredQuantity = 1;
        }
        if (Input.GetKeyDown( KeyCode.Alpha2))
        {
            desiredQuantity = 2;
        }
        if (Input.GetKeyDown( KeyCode.Alpha3))
        {
            desiredQuantity = 3;
        }
    }

    void ProcessMovement()
    {
        // Every frame without exception move the currentQuantity
        // towards the desiredQuantity, by the movement rate:
        currentQuantity = Mathf.MoveTowards(
            currentQuantity,
            desiredQuantity,
            MovementPerSecond * Time.deltaTime);
    }

    public UnityEngine.UI.Text TextOutput;
    void DisplayResults()
    {
        TextOutput.text = "Press 1, 2 or 3 to select desiredQuantity.\n\n" +
            "desiredQuantity = " + desiredQuantity + "\n" +
            "currentQuantity = " + currentQuantity + "\n";
    }

    void Update ()
    {
        AcceptUserInput();

        ProcessMovement();

        DisplayResults();
    }
}