using System;

public class Program

{

    public static void Main()

    {

    public class Roller : MonoBehaviour

{

    private int health = 10;

    public int damage = 0;

    Rigidbody rb;

    int entries = 0;

    void Start()

    {

        rb = GetComponent("Rigidbody") as Rigidbody;

    }

​

    void Update()

    {

        if (Input.GetKey("down"))

        {

            rb.AddForce(1, 0, 0);

        }

        if (Input.GetKey("up"))

        {

            rb.AddForce(-1, 0, 0);

        }

        if (Input.GetKey("right"))

        {

            rb.AddForce(0, 0, 1);

        }

        if (Input.GetKey("left"))

        {

            rb.AddForce(0, 0, -1);

        }

        if (Input.GetKeyDown("space"))

        {

            rb.AddForce(0, 300, 0);

        }

​

    }

    }

}