Roll A Ball

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

public class Movement : MonoBehaviour {
    public float speed;
    private int score;
    private Rigidbody rb;
    public Text scoreText;

    // Use this for initialization
    void Start () {
        rb = GetComponent<Rigidbody> ();
        score = 0;
    }

    // Update is called once per frame
    void Update () {
        float moveHorizontal = Input.GetAxis ("Horizontal");
        float moveVertical = Input.GetAxis ("Vertical");

        Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);

        rb.AddForce (movement * speed);
    }
    //---------------------------------
    void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.CompareTag ("Collect Me")) {
            other.gameObject.SetActive (false);
            score = score + 1;
            SetScoreText ();
            if (score >= 3) {
                scoreText.text = "You won!";
            }
        }
    }
    //---------------------------------
    void SetScoreText()
    {
        scoreText.text = "Score: " + score.ToString ();
    }
    //---------------------------------

}