void Start()
{
enemyFactory = EnemyFactory.Instance;
StartCoroutine(EnemySpawnCoroutine());
towerEventHandler = TowerEventHandler.Instance;
HealthStats.OnGameLost += GameLost;
}
private TowerEventHandler()
{
Instance = this;
TowerUpgradeDowngrade.OnUpgrade += HandleUpgradeEvent;
TowerUpgradeDowngrade.OnDowngrade += HandleDowngradeEvent;
TowerUpgradeDowngrade.OnTowerSold += HandleSoldEvent;
TowerFactory.OnTowerPlaced += HandleTowerPlacedEvent;
}