AppleTree

using UnityEngine;
using System.Collections;

public class AppleTree : MonoBehaviour {

    private bool currentDirection = true; //True is Right, Left is False
    public float speed = 20;
    private int changeRoll = 1;
    private int currentRoll;
    private int frameCounter;
    public GameObject apple;

    // Use this for initialization
    void Start () {

    }

    // Update is called once per frame
    void Update () {
        frameCounter++;
        Move ();
        ChangeDirection ();
        DropApple ();
    }

    void Move ()
    {
        if (GetComponent<Transform> ().position.x < 9 && (GetComponent<Transform> ().position.x) > -9)
        {
            if (currentDirection == true)
                GetComponent<Rigidbody2D> ().velocity = new Vector3 (speed, 0, 0);
            else if (currentDirection == false)
                GetComponent<Rigidbody2D> ().velocity = new Vector3 (-speed, 0, 0);
        }
        else if (GetComponent<Transform> ().position.x > 9) {
            currentDirection = !currentDirection;
            GetComponent<Rigidbody2D> ().velocity = new Vector3 (-speed, 0, 0);
        }
        else if (GetComponent<Transform> ().position.x < -9)
        {
            currentDirection = !currentDirection;
            GetComponent<Rigidbody2D> ().velocity = new Vector3 (speed, 0, 0);
        }
    }

    void ChangeDirection()
    {
        currentRoll = (int) Random.Range (1, 21);
        if (currentRoll == changeRoll)
            currentDirection = !currentDirection;
    }

    void DropApple()
    {
        if (frameCounter % 30 == 0)
        {
            GameObject newApple = Instantiate (apple) as GameObject;
            newApple.GetComponent<Transform>().position = GetComponent<Transform>().position;
        }

    }
}