public class script : MonoBehaviour {

    public Vector3 velocity;
    public Vector3 angVelocity;
    public  float force;
    public float rotationForce;
    public float friction;
    public float angularFriction;

    public Transform globalGravityCenterTransform;
    public float gravityForce;

    // Update is called once per frame
    void Update () {
       
        ////////////////////////////
        if (Input.GetKeyDown(KeyCode.H))
        {
            Application.targetFrameRate = 20;
        }

        if (Input.GetKeyDown(KeyCode.G))
        {
            Application.targetFrameRate = 60;
        }
        ///////////////////////////

        velocity = velocity / (1.0f + (friction*Time.deltaTime));
        angVelocity = angVelocity /(1.0f + (angularFriction*Time.deltaTime));////трение
        transform.position += velocity*Time.deltaTime;
        transform.Rotate(angVelocity);///перемещение

        if (globalGravityCenterTransform != null)
        velocity += ((globalGravityCenterTransform.position - transform.position).normalized/(globalGravityCenterTransform.position - transform.position).magnitude)*gravityForce*Time.deltaTime;/// если есть центр притяжения, то форсит к нему

        if (Input.GetKey(KeyCode.W))
        {
            velocity += transform.forward*force * Time.deltaTime;////форс вперед
        }

        if (Input.GetKey(KeyCode.S))
        {
            velocity -= transform.forward*force * Time.deltaTime;///назад
        }

        Vector3 rotationVector = new Vector3(-Input.GetAxis("Mouse Y"),Input.GetAxis("Mouse X")) ;
        angVelocity += rotationVector * rotationForce * Time.deltaTime;///форс вращения

    }
}