private void Awake()
{
_linkedTower = GetComponentInParent<Tower>();
// We should change our rank when it actually changes
_linkedTower.RankedHasChangedEvent += SetImageSpriteBasedOnRank;
_rankImage = GetComponent<SpriteRenderer>();
SetImageSpriteBasedOnRank(_linkedTower.Rank);
}
/// <summary>
/// Changing the cost logic
/// We're not only getting the cost, but also dimming the Upgrade button
/// </summary>
/// <param name="tower"></param>
/// <returns></returns>
protected override int GetCostFromTower(Tower tower)
{
var towerUpgradePrice = tower.TowerPreferences[tower.Rank].UpgradeCost;
if (towerUpgradePrice > PlayerStatus.Instance.Money)
{
GetComponent<Image>().color = Color.gray;
// And subscribe to the money changed event so possobly later we will be able to buy that tower
GlobalEventSystem<MoneyChangedEvent>.EventHappened += MoneyHasChangedEvent;
}
return towerUpgradePrice;
}
/// <summary>
/// Gets cost from the provided tower
/// </summary>
/// <param name="tower">Tower from which we should get cost</param>
/// <returns>Cost</returns>
protected virtual int GetCostFromTower(Tower tower)
{
return -tower.TowerPreferences[tower.Rank].SellCost;
}