Simple Player Controller – Arrows and Jump

using UnityEngine;
using System.Collections;

public class cube : MonoBehaviour
{
public float moveSpeed;


    private Rigidbody rb;
	public float JumpHeight = 0.5f;

    // Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody>();
        rb.freezeRotation = true;
		moveSpeed = 1f;
    }


void Update()
{
	transform.Translate(moveSpeed*Input.GetAxis("Horizontal")*Time.deltaTime,0f,moveSpeed*Input.GetAxis("Vertical")*Time.deltaTime);
	
	//jump
	
	
        if (Input.GetKeyDown(KeyCode.Space))
        {
            rb.AddForce(transform.up * 40000 * JumpHeight * Time.deltaTime);

        }
}
}