var spd=30;
var rot_spd=40;
var jump_spd=10;

var in_jump=false;

var rbody : Rigidbody;

function Start () {
  rbody = this.rigidbody;
}

function Update () {
  if (Input.GetKey(KeyCode.W)) {
   transform.position += transform.forward*spd*Time.deltaTime;
  }
  if (Input.GetKey(KeyCode.S)) {
   transform.position -= transform.forward*(spd/2)*Time.deltaTime;
  }
  if (Input.GetKey(KeyCode.D)) {
   transform.Rotate(Vector3.up*Time.deltaTime*rot_spd);
  }
  if (Input.GetKey(KeyCode.A)) {
   transform.Rotate(Vector3.down*Time.deltaTime*rot_spd);
  }
  if (Input.GetKey(KeyCode.Space) && in_jump==false) {
   rbody.AddForce(Vector3.up*jump_spd, ForceMode.Impulse);
   in_jump = true;
  }
   
  function OnCollisionEnter(collision : Collision) { //ошибка гдето тут:))
   if (collision.gameObject.tag == "From_Jump") {
    in_jump=false;
   }
  }
}