If (Input.GetKey(KeyCode.Right) == true) {
  player.moveRight;
}

void Player::moveRight() {
  animator.SetBool("MoveRight", true);
  GameObject.move(Vector3.right);
  _facing = RIGHT;
}

void OnCollisionEnter2D (Collision2D coll) {
  string tag = coll.collider.gameObject.tag;
  if (tag == "box1") {
    player.moveRight;
    }
  }