private void OnEnemyKilled(LifeControl life)
        {
            var time_bonus   = TimeBonus.GetBonusForTime(life.ScreenTime);
            var enemy_score  = life.score_points_on_destroyed <= 0 ? life.TotalHitPoints : life.score_points_on_destroyed;
            var kill_points  = time_bonus.points_amount + enemy_score;
            var total_points = kill_points * ScoreMultiplier;
            var screenPoint  = life.gameObject.transform.position;

            UI_Scoring.DisplayEnemyPoint(screenPoint, enemy_score, time_bonus.name);
            score += total_points;
            UpdateDisplay();
        }