private void SpawnEnemy(NonPlayerCharacter.EnemyType enemyType, GameObject floor)
{
int floorNumber = floor.GetComponent <TowerFloor>().floorNumber;
Vector3 spawnLoc = new Vector3(floor.transform.position.x + 4, floor.transform.position.y - 0.65f);
Transform enemyObject = Instantiate(NonPlayerCharacter.GetPF(enemyType), spawnLoc, Quaternion.identity, floor.transform);
NonPlayerCharacter enemy = enemyObject.GetComponent <NonPlayerCharacter>();
// every 5 floors increase the level of the mobs
int enemyLevel = (int)Math.Ceiling(floorNumber / 5.0f);
// minimum level of 1
enemyLevel = enemyLevel < 1 ? 1 : enemyLevel;
enemy.SetEnemyLevel(enemyLevel);
}