TutoUnity [1]

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

public class mouvement : MonoBehaviour {

    public float speed;

    void Update () {
        float MoveX = Input.GetAxis ("Horizontal")*speed;
        float MoveZ = Input.GetAxis ("Vertical")*speed;
        transform.position += new Vector3 (MoveX, 0, MoveZ);
    }
}