private void OnTriggerExit(Collider other)
        {
            var enemy = other.GetComponent <Main_Enemy>();

            if (enemy != null && _TargetEnemy == enemy)
            {
                _TargetEnemy = null;
            }
        }
        private void OnTriggerEnter(Collider other)
        {
            var enemy = other.GetComponent <Main_Enemy>();

            if (enemy != null)
            {
                _TargetEnemy = enemy;
            }

            var enemyAI = other.GetComponent <EnemyNavMesh>();

            if (enemyAI != null)
            {
                _EnemyAI = enemyAI;
            }
        }